From 5fb720be6da8b421a4889ffd2a454a20f7156bb1 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 19 Jan 2026 06:42:55 +0000 Subject: [PATCH 001/282] disbale default user and add charmed-operator user and password generation on leader elected --- src/core/base_workload.py | 10 ++++++++++ src/core/cluster_state.py | 19 +++++++++++++++++++ src/core/models.py | 13 +++++++++++++ src/events/base_events.py | 24 +++++++++++++++++++++++- src/literals.py | 4 ++++ src/managers/config.py | 31 +++++++++++++++++++++++++++++++ src/workload_k8s.py | 11 +++++++++++ 7 files changed, 111 insertions(+), 1 deletion(-) diff --git a/src/core/base_workload.py b/src/core/base_workload.py index 452d52c..bed9210 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -29,3 +29,13 @@ def write_config_file(self, config: dict[str, str]) -> None: config (dict): The config properties to be written. """ pass + + @abstractmethod + def write_file(self, content: str, path: str) -> None: + """Write content to a file on disk. + + Args: + content (str): The content to be written. + path (str): The file path where the content should be written. + """ + pass diff --git a/src/core/cluster_state.py b/src/core/cluster_state.py index fd53cee..6f62510 100644 --- a/src/core/cluster_state.py +++ b/src/core/cluster_state.py @@ -99,3 +99,22 @@ def servers(self) -> set[ValkeyServer]: servers.add(self.unit_server) return servers + + def get_secret_from_id(self, secret_id: str) -> dict[str, str]: + """Resolve the given id of a Juju secret and return the content as a dict. + + Args: + model (Model): Model object. + secret_id (str): The id of the secret. + + Returns: + dict: The content of the secret. + """ + try: + secret_content = self.charm.model.get_secret(id=secret_id).get_content(refresh=True) + except ops.SecretNotFoundError: + raise ops.SecretNotFoundError(f"The secret '{secret_id}' does not exist.") + except ops.ModelError: + raise + + return secret_content diff --git a/src/core/models.py b/src/core/models.py index 9bd1b76..95f777f 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -9,6 +9,7 @@ import ops from charms.data_platform_libs.v1.data_interfaces import ( + ExtraSecretStr, OpsOtherPeerUnitRepositoryInterface, OpsPeerRepositoryInterface, OpsPeerUnitRepositoryInterface, @@ -16,12 +17,16 @@ ) from pydantic import Field +from literals import INTERNAL_USER + logger = logging.getLogger(__name__) class PeerAppModel(PeerModel): """Model for the peer application data.""" + charmed_operator_password: ExtraSecretStr = Field(default="") + class PeerUnitModel(PeerModel): """Model for the peer unit data.""" @@ -119,3 +124,11 @@ def __init__( def model(self) -> PeerAppModel | None: """The peer relation model for this application.""" return self.data_interface.build_model(self.relation.id) if self.relation else None + + @property + def internal_user_credentials(self) -> dict[str, str]: + """Retrieve the credentials for the internal admin user.""" + if self.model and (password := self.model.charmed_operator_password): + return {INTERNAL_USER: password} + + return {} diff --git a/src/events/base_events.py b/src/events/base_events.py index 924c9d6..3ef79c0 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -9,7 +9,7 @@ import ops -from literals import PEER_RELATION +from literals import INTERNAL_USER, INTERNAL_USER_PASSWORD_CONFIG, PEER_RELATION if TYPE_CHECKING: from charm import ValkeyCharm @@ -28,6 +28,7 @@ def __init__(self, charm: "ValkeyCharm"): self.charm.on[PEER_RELATION].relation_joined, self._on_peer_relation_joined ) self.framework.observe(self.charm.on.update_status, self._on_update_status) + self.framework.observe(self.charm.on.leader_elected, self._on_leader_elected) def _on_peer_relation_joined(self, event: ops.RelationJoinedEvent) -> None: """Handle event received by all units when a new unit joins the cluster relation.""" @@ -38,3 +39,24 @@ def _on_update_status(self, event: ops.UpdateStatusEvent) -> None: """Handle the update-status event.""" if not self.charm.state.unit_server.is_started: logger.warning("Service not started") + + def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: + """Handle the leader-elected event.""" + if not self.charm.state.peer_relation: + event.defer() + return + + if self.charm.unit.is_leader() and not self.charm.state.cluster.internal_user_credentials: + if admin_secret_id := self.charm.config.get(INTERNAL_USER_PASSWORD_CONFIG): + try: + password = self.charm.state.get_secret_from_id(str(admin_secret_id)).get( + INTERNAL_USER + ) + except (ops.ModelError, ops.SecretNotFoundError) as e: + logger.error(f"Could not access secret {admin_secret_id}: {e}") + raise + else: + password = self.charm.config_manager.generate_password() + + self.charm.state.cluster.update({"charmed_operator_password": password}) + self.charm.config_manager.set_acl_file() diff --git a/src/literals.py b/src/literals.py index 7921033..4294b64 100644 --- a/src/literals.py +++ b/src/literals.py @@ -9,6 +9,10 @@ CONTAINER = "valkey" CONFIG_FILE = "/var/lib/valkey/valkey.conf" +ACL_FILE = "/var/lib/valkey/users.acl" PEER_RELATION = "valkey-peers" STATUS_PEERS_RELATION = "status-peers" + +INTERNAL_USER = "charmed-operator" +INTERNAL_USER_PASSWORD_CONFIG = "system-users" diff --git a/src/managers/config.py b/src/managers/config.py index f1c9718..75df8b7 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -4,7 +4,10 @@ """Manager for all config related tasks.""" +import hashlib import logging +import secrets +import string from pathlib import Path from data_platform_helpers.advanced_statuses.models import StatusObject @@ -13,6 +16,7 @@ from core.base_workload import WorkloadBase from core.cluster_state import ClusterState +from literals import ACL_FILE, INTERNAL_USER from statuses import CharmStatuses logger = logging.getLogger(__name__) @@ -55,6 +59,10 @@ def config_properties(self) -> dict[str, str]: value = "" config_properties[key.strip()] = value.strip() + # Adjust default values + # Use the ACL file + config_properties["aclfile"] = str(ACL_FILE) + return config_properties def set_config_properties(self) -> None: @@ -62,6 +70,29 @@ def set_config_properties(self) -> None: logger.debug("Writing configuration") self.workload.write_config_file(config=self.config_properties) + def set_acl_file(self) -> None: + """Write the ACL file with appropriate user permissions.""" + logger.debug("Writing ACL configuration") + charmed_operator_password = self.state.cluster.internal_user_credentials.get( + INTERNAL_USER, "" + ) + # sha256 hash the password + charmed_operator_password_hash = hashlib.sha256( + charmed_operator_password.encode("utf-8") + ).hexdigest() + # write the ACL file + acl_content = "user default off\n" + acl_content += f"user {INTERNAL_USER} on #{charmed_operator_password_hash} ~* +@all\n" + self.workload.write_file(acl_content, ACL_FILE) + + def generate_password(self) -> str: + """Create randomized string for use as app passwords. + + Returns: + str: String of 32 randomized letter+digit characters + """ + return "".join([secrets.choice(string.ascii_letters + string.digits) for _ in range(32)]) + def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the config manager's statuses.""" status_list: list[StatusObject] = [] diff --git a/src/workload_k8s.py b/src/workload_k8s.py index 75e1113..5e6b5a6 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -71,3 +71,14 @@ def write_config_file(self, config: dict[str, str]) -> None: path = self.config_file path.write_text(config_string) + + @override + def write_file(self, content: str, path: str) -> None: + """Write content to a file on disk. + + Args: + content (str): The content to be written. + path (str): The file path where the content should be written. + """ + file_path = pathops.ContainerPath(path, container=self.container) + file_path.write_text(content) From 93f8b418930dbf002de15002bb9b73f156daef73 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 19 Jan 2026 11:39:34 +0000 Subject: [PATCH 002/282] add secret handlign and config for admin password --- config.yaml | 11 +++++ poetry.lock | 20 ++++++++- pyproject.toml | 1 + src/common/client.py | 64 ++++++++++++++++++++++++++++ src/common/exceptions.py | 8 ++++ src/core/models.py | 1 + src/events/base_events.py | 89 +++++++++++++++++++++++++++++++++++++++ src/literals.py | 2 + src/managers/cluster.py | 23 ++++++++++ src/managers/config.py | 5 ++- src/statuses.py | 13 ++++++ 11 files changed, 234 insertions(+), 3 deletions(-) create mode 100644 config.yaml create mode 100644 src/common/client.py create mode 100644 src/common/exceptions.py diff --git a/config.yaml b/config.yaml new file mode 100644 index 0000000..bf71dcd --- /dev/null +++ b/config.yaml @@ -0,0 +1,11 @@ +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. + +options: + system-users: + type: secret + description: | + Configure the internal system user and it's password. The password will + be auto-generated if this option is not set. It is for internal use only + and SHOULD NOT be used by applications. This needs to be a Juju Secret URI pointing + to a secret that contains the following content: `root: `. \ No newline at end of file diff --git a/poetry.lock b/poetry.lock index ab7bb95..4eb3149 100644 --- a/poetry.lock +++ b/poetry.lock @@ -1,4 +1,4 @@ -# This file is automatically @generated by Poetry 2.1.4 and should not be changed by hand. +# This file is automatically @generated by Poetry 2.2.1 and should not be changed by hand. [[package]] name = "allure-pytest" @@ -905,6 +905,22 @@ files = [ [package.dependencies] typing-extensions = ">=4.12.0" +[[package]] +name = "valkey" +version = "6.1.1" +description = "Python client for Valkey forked from redis-py" +optional = false +python-versions = ">=3.9" +groups = ["main"] +files = [ + {file = "valkey-6.1.1-py3-none-any.whl", hash = "sha256:e2691541c6e1503b53c714ad9a35551ac9b7c0bbac93865f063dbc859a46de92"}, + {file = "valkey-6.1.1.tar.gz", hash = "sha256:5880792990c6c2b5eb604a5ed5f98f300880b6dd92d123819b66ed54bb259731"}, +] + +[package.extras] +libvalkey = ["libvalkey (>=4.0.1)"] +ocsp = ["cryptography (>=36.0.1)", "pyopenssl (==23.2.1)", "requests (>=2.31.0)"] + [[package]] name = "valkey-glide" version = "2.2.5" @@ -997,4 +1013,4 @@ type = ["pytest-mypy"] [metadata] lock-version = "2.1" python-versions = "^3.12" -content-hash = "c1ca33a93e20384cbd2bfdf6bcdcbb39a54d4d60854bcbf1c33f4e580b82122e" +content-hash = "e4b51126ae1629392f53bbebc2d837e2a5cd51804315984a028859b8c799af3e" diff --git a/pyproject.toml b/pyproject.toml index 76efd34..b786d85 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -11,6 +11,7 @@ ops = "^3.5.0" charmlibs-pathops = "^1.2.0" data-platform-helpers = ">=0.1.7" valkey-glide = "^2.2.5" +valkey = "^6.1.1" [tool.poetry.requires-plugins] poetry-plugin-export = ">=1.8" diff --git a/src/common/client.py b/src/common/client.py new file mode 100644 index 0000000..44f38a0 --- /dev/null +++ b/src/common/client.py @@ -0,0 +1,64 @@ +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. + +"""ValkeyClient utility class to connect to valkey servers.""" + +from valkey import Valkey + +from common.exceptions import ValkeyUserManagementError +from literals import CLIENT_PORT + + +class ValkeyClient: + """Handle valkey client connections.""" + + def __init__( + self, + username: str, + password: str, + host: str, + ): + self.host = host + self.user = username + self.password = password + self.client = Valkey(port=CLIENT_PORT, username=username, password=password) + + # async def create_client(self) -> GlideClient: + # """Initialize the Valkey client.""" + # addresses = [NodeAddress(host=host, port=CLIENT_PORT) for host in self.host] + # credentials = ServerCredentials(self.user, self.password) + # client_config = GlideClusterClientConfiguration( + # addresses, + # credentials=credentials, + # ) + # return await GlideClient.create(client_config) + + def update_password(self, username: str, new_password: str) -> None: + """Update a user's password. + + Args: + username (str): The username to update. + new_password (str): The new password. + """ + # try: + # client = await self.create_client() + # await client.custom_command( + # [ + # "ACL", + # "SETUSER", + # username, + # "resetpass", + # f">{new_password}", + # ] + # ) + # except Exception as e: + # raise ValkeyUserManagementError(f"Could not update password for user {username}: {e}") + # finally: + # await client.close() + try: + self.client.acl_setuser( + username, enabled=True, reset_passwords=True, passwords=[f"+{new_password}"] + ) + self.client.acl_save() + except Exception as e: + raise ValkeyUserManagementError(f"Could not update password for user {username}: {e}") diff --git a/src/common/exceptions.py b/src/common/exceptions.py new file mode 100644 index 0000000..acd66c1 --- /dev/null +++ b/src/common/exceptions.py @@ -0,0 +1,8 @@ +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. + +"""Charm-specific exceptions.""" + + +class ValkeyUserManagementError(Exception): + """Custom Exception if user could not be added or updated in valkey cluster.""" diff --git a/src/core/models.py b/src/core/models.py index 95f777f..de27f03 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -32,6 +32,7 @@ class PeerUnitModel(PeerModel): """Model for the peer unit data.""" started: bool = Field(default=False) + hostname: str = Field(default="") class RelationState: diff --git a/src/events/base_events.py b/src/events/base_events.py index 3ef79c0..9a8def6 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -5,11 +5,14 @@ """Valkey base event handlers.""" import logging +import socket from typing import TYPE_CHECKING import ops +from common.exceptions import ValkeyUserManagementError from literals import INTERNAL_USER, INTERNAL_USER_PASSWORD_CONFIG, PEER_RELATION +from statuses import CharmStatuses, ClusterStatuses if TYPE_CHECKING: from charm import ValkeyCharm @@ -29,6 +32,8 @@ def __init__(self, charm: "ValkeyCharm"): ) self.framework.observe(self.charm.on.update_status, self._on_update_status) self.framework.observe(self.charm.on.leader_elected, self._on_leader_elected) + self.framework.observe(self.charm.on.config_changed, self._on_config_changed) + self.framework.observe(self.charm.on.secret_changed, self._on_secret_changed) def _on_peer_relation_joined(self, event: ops.RelationJoinedEvent) -> None: """Handle event received by all units when a new unit joins the cluster relation.""" @@ -60,3 +65,87 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: self.charm.state.cluster.update({"charmed_operator_password": password}) self.charm.config_manager.set_acl_file() + + def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: + """Handle the config_changed event.""" + self.charm.state.unit_server.update({"hostname": socket.gethostname()}) + + if not self.charm.unit.is_leader(): + return + + if admin_secret_id := self.charm.config.get(INTERNAL_USER_PASSWORD_CONFIG): + try: + self.update_admin_password(str(admin_secret_id)) + except (ops.ModelError, ops.SecretNotFoundError): + event.defer() + return + + def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: + """Handle the secret_changed event.""" + if not self.charm.unit.is_leader(): + return + + if admin_secret_id := self.charm.config.get(INTERNAL_USER_PASSWORD_CONFIG): + if admin_secret_id == event.secret.id: + try: + self.update_admin_password(str(admin_secret_id)) + except (ops.ModelError, ops.SecretNotFoundError): + event.defer() + return + + def update_admin_password(self, admin_secret_id: str) -> None: + """Compare current admin password and update in valkey if required.""" + try: + if new_password := self.charm.state.get_secret_from_id(admin_secret_id).get( + INTERNAL_USER + ): + # only update admin credentials if the password has changed + if new_password != self.charm.state.cluster.internal_user_credentials.get( + INTERNAL_USER + ): + logger.debug(f"{INTERNAL_USER_PASSWORD_CONFIG} have changed.") + try: + self.charm.cluster_manager.update_credentials( + username=INTERNAL_USER, password=new_password + ) + self.charm.state.cluster.update( + {"charmed_operator_password": new_password} + ) + except ValkeyUserManagementError as e: + logger.error(e) + self.charm.status.set_running_status( + ClusterStatuses.PASSWORD_UPDATE_FAILED.value, + scope="app", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + return + else: + logger.error(f"Invalid username in secret {admin_secret_id}.") + self.charm.status.set_running_status( + ClusterStatuses.PASSWORD_UPDATE_FAILED.value, + scope="app", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + return + except (ops.ModelError, ops.SecretNotFoundError) as e: + logger.error(e) + self.charm.status.set_running_status( + CharmStatuses.SECRET_ACCESS_ERROR.value, + scope="app", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + raise + + self.charm.state.statuses.delete( + ClusterStatuses.PASSWORD_UPDATE_FAILED.value, + scope="app", + component=self.charm.cluster_manager.name, + ) + self.charm.state.statuses.delete( + CharmStatuses.SECRET_ACCESS_ERROR.value, + scope="app", + component=self.charm.cluster_manager.name, + ) diff --git a/src/literals.py b/src/literals.py index 4294b64..61e0f04 100644 --- a/src/literals.py +++ b/src/literals.py @@ -16,3 +16,5 @@ INTERNAL_USER = "charmed-operator" INTERNAL_USER_PASSWORD_CONFIG = "system-users" + +CLIENT_PORT = 6379 diff --git a/src/managers/cluster.py b/src/managers/cluster.py index f099c2c..2c717ed 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -10,8 +10,11 @@ from data_platform_helpers.advanced_statuses.protocol import ManagerStatusProtocol from data_platform_helpers.advanced_statuses.types import Scope +from common.client import ValkeyClient +from common.exceptions import ValkeyUserManagementError from core.base_workload import WorkloadBase from core.cluster_state import ClusterState +from literals import INTERNAL_USER from statuses import CharmStatuses logger = logging.getLogger(__name__) @@ -26,6 +29,26 @@ class ClusterManager(ManagerStatusProtocol): def __init__(self, state: ClusterState, workload: WorkloadBase): self.state = state self.workload = workload + self.admin_user = INTERNAL_USER + self.admin_password = self.state.cluster.internal_user_credentials.get(INTERNAL_USER, "") + self.cluster_hostnames = [server.model.hostname for server in self.state.servers] + + def update_credentials(self, username: str, password: str) -> None: + """Update a user's password. + + Args: + username (str): The username to update. + password (str): The new password. + """ + try: + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + host=self.state.unit_server.model.hostname, + ) + client.update_password(username=username, new_password=password) + except ValkeyUserManagementError: + raise def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the cluster manager's statuses.""" diff --git a/src/managers/config.py b/src/managers/config.py index 75df8b7..d0febfc 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -16,7 +16,7 @@ from core.base_workload import WorkloadBase from core.cluster_state import ClusterState -from literals import ACL_FILE, INTERNAL_USER +from literals import ACL_FILE, CLIENT_PORT, INTERNAL_USER from statuses import CharmStatuses logger = logging.getLogger(__name__) @@ -60,6 +60,9 @@ def config_properties(self) -> dict[str, str]: config_properties[key.strip()] = value.strip() # Adjust default values + # port + config_properties["port"] = str(CLIENT_PORT) + # Use the ACL file config_properties["aclfile"] = str(ACL_FILE) diff --git a/src/statuses.py b/src/statuses.py index 4d0036f..ba9234b 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -20,3 +20,16 @@ class CharmStatuses(Enum): message="Scaling Valkey is not implemented yet", ) SERVICE_NOT_STARTED = StatusObject(status="blocked", message="Service not started") + SECRET_ACCESS_ERROR = StatusObject( + status="blocked", + message="Cannot access configured secret, check permissions", + running="async", + ) + + +class ClusterStatuses(Enum): + """Collection of possible cluster related statuses.""" + + PASSWORD_UPDATE_FAILED = StatusObject( + status="blocked", message="Failed to update the internal user's password", running="async" + ) From a0e62d49ed17ca043853a2b5027b667fbd35cb92 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 20 Jan 2026 07:09:24 +0000 Subject: [PATCH 003/282] bind to 0.0.0.0 --- src/managers/config.py | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/managers/config.py b/src/managers/config.py index d0febfc..2340aa9 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -63,6 +63,9 @@ def config_properties(self) -> dict[str, str]: # port config_properties["port"] = str(CLIENT_PORT) + # bind to all interfaces + config_properties["bind"] = "0.0.0.0 -::1" + # Use the ACL file config_properties["aclfile"] = str(ACL_FILE) From c7caead67ec7a46a7be9c0b520c4be7194c7aeb6 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 20 Jan 2026 07:13:57 +0000 Subject: [PATCH 004/282] switch to glide --- poetry.lock | 129 ++++++++++++---------------------------- pyproject.toml | 12 ++-- src/common/client.py | 75 +++++++++++++---------- src/managers/cluster.py | 2 +- 4 files changed, 90 insertions(+), 128 deletions(-) diff --git a/poetry.lock b/poetry.lock index 4eb3149..5c9f8e8 100644 --- a/poetry.lock +++ b/poetry.lock @@ -66,7 +66,7 @@ version = "4.12.1" description = "High-level concurrency and networking framework on top of asyncio or Trio" optional = false python-versions = ">=3.9" -groups = ["main", "integration"] +groups = ["main"] files = [ {file = "anyio-4.12.1-py3-none-any.whl", hash = "sha256:d405828884fc140aa80a3c667b8beed277f1dfedec42ba031bd6ac3db606ab6c"}, {file = "anyio-4.12.1.tar.gz", hash = "sha256:41cfcc3a4c85d3f05c932da7c26d0201ac36f72abd4435ba90d0464a3ffed703"}, @@ -269,7 +269,7 @@ version = "3.11" description = "Internationalized Domain Names in Applications (IDNA)" optional = false python-versions = ">=3.8" -groups = ["main", "integration"] +groups = ["main"] files = [ {file = "idna-3.11-py3-none-any.whl", hash = "sha256:771a87f49d9defaf64091e6e6fe9c18d4833f140bd19464795bc32d966ca37ea"}, {file = "idna-3.11.tar.gz", hash = "sha256:795dafcc9c04ed0c1fb032c2aa73654d8e8c5023a7df64a53f39190ada629902"}, @@ -392,7 +392,6 @@ files = [ {file = "ops-3.5.0-py3-none-any.whl", hash = "sha256:07b1d1dbc0f3ca59534d5fe5020a66ee95c528f2430e004922350274509420c6"}, {file = "ops-3.5.0.tar.gz", hash = "sha256:e3427889054285bd2711a3a297a77218384eacaf0d1001590ee4437cca115577"}, ] -develop = false [package.dependencies] opentelemetry-api = ">=1.0,<2.0" @@ -400,14 +399,8 @@ PyYAML = "==6.*" websocket-client = "==1.*" [package.extras] -testing = ["ops-scenario (==8.6.0.dev0)"] -tracing = ["ops-tracing (==3.6.0.dev0)"] - -[package.source] -type = "git" -url = "https://github.com/reneradoi/operator" -reference = "HEAD" -resolved_reference = "d3d3b1816a4f9c15861908375703c7f54e0735ad" +testing = ["ops-scenario (==8.5.0)"] +tracing = ["ops-tracing (==3.5.0)"] [[package]] name = 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host: str, + hosts: list[str], ): - self.host = host + self.hosts = hosts self.user = username self.password = password - self.client = Valkey(port=CLIENT_PORT, username=username, password=password) - # async def create_client(self) -> GlideClient: - # """Initialize the Valkey client.""" - # addresses = [NodeAddress(host=host, port=CLIENT_PORT) for host in self.host] - # credentials = ServerCredentials(self.user, self.password) - # client_config = GlideClusterClientConfiguration( - # addresses, - # credentials=credentials, - # ) - # return await GlideClient.create(client_config) + async def create_client(self) -> GlideClient: + """Initialize the Valkey client.""" + addresses = [NodeAddress(host=host, port=CLIENT_PORT) for host in self.hosts] + credentials = ServerCredentials(username=self.user, password=self.password) + # TODO add back when we enable cluster mode + # client_config = GlideClusterClientConfiguration( + # addresses, + # credentials=credentials, + # ) + client_config = GlideClientConfiguration( + addresses, + credentials=credentials, + ) + return await GlideClient.create(client_config) def update_password(self, username: str, new_password: str) -> None: """Update a user's password. @@ -40,25 +54,24 @@ def update_password(self, username: str, new_password: str) -> None: username (str): The username to update. new_password (str): The new password. """ - # try: - # client = await self.create_client() - # await client.custom_command( - # [ - # "ACL", - # "SETUSER", - # username, - # "resetpass", - # f">{new_password}", - # ] - # ) - # except Exception as e: - # raise ValkeyUserManagementError(f"Could not update password for user {username}: {e}") - # finally: - # await client.close() + client = None try: - self.client.acl_setuser( - username, enabled=True, reset_passwords=True, passwords=[f"+{new_password}"] + client = asyncio.run(self.create_client()) + result = asyncio.run( + client.custom_command( + [ + "ACL", + "SETUSER", + username, + "resetpass", + f">{new_password}", + ] + ) ) - self.client.acl_save() + logger.debug(f"Password update result: {result}") except Exception as e: + logger.error(f"Error updating password for user {username}: {e}") raise ValkeyUserManagementError(f"Could not update password for user {username}: {e}") + finally: + if client: + asyncio.run(client.close()) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 2c717ed..aa0f626 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -44,7 +44,7 @@ def update_credentials(self, username: str, password: str) -> None: client = ValkeyClient( username=self.admin_user, password=self.admin_password, - host=self.state.unit_server.model.hostname, + hosts=self.cluster_hostnames, ) client.update_password(username=username, new_password=password) except ValkeyUserManagementError: From af42d57690bb51f5633ea42525c8189f237092ac Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 20 Jan 2026 09:42:24 +0000 Subject: [PATCH 005/282] add unit tests --- .gitignore | 3 + tests/unit/test_charm.py | 241 ++++++++++++++++++++++++++++++++++++++- 2 files changed, 243 insertions(+), 1 deletion(-) diff --git a/.gitignore b/.gitignore index b4be834..b0e57b2 100644 --- a/.gitignore +++ b/.gitignore @@ -5,3 +5,6 @@ .env valkey-operator/kubernetes/*coverage* common/poetry.lock +__pycache__ +coverage.xml +.coverage diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 685dc15..16bd6d5 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -2,10 +2,20 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. +from pathlib import Path +from unittest.mock import patch + +import pytest +import yaml from ops import ActiveStatus, pebble, testing from src.charm import ValkeyCharm -from src.literals import PEER_RELATION, STATUS_PEERS_RELATION +from src.literals import ( + INTERNAL_USER, + INTERNAL_USER_PASSWORD_CONFIG, + PEER_RELATION, + STATUS_PEERS_RELATION, +) from src.statuses import CharmStatuses from .helpers import status_is @@ -15,6 +25,9 @@ SERVICE_VALKEY = "valkey" SERVICE_METRIC_EXPORTER = "metric_exporter" +METADATA = yaml.safe_load(Path("./metadata.yaml").read_text()) +APP_NAME = METADATA["name"] + def test_pebble_ready_leader_unit(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) @@ -148,3 +161,229 @@ def test_update_status_non_leader_unit(cloud_spec): ) state_out = ctx.run(ctx.on.update_status(), state_in) assert status_is(state_out, CharmStatuses.SCALING_NOT_IMPLEMENTED.value) + + +def test_internal_user_creation(): + ctx = testing.Context(ValkeyCharm) + relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + + container = testing.Container(name=CONTAINER, can_connect=True) + state_in = testing.State(relations={relation}, leader=True, containers={container}) + with patch("workload_k8s.ValkeyK8sWorkload.write_file"): + state_out = ctx.run(ctx.on.leader_elected(), state_in) + secret_out = state_out.get_secret(label=f"{PEER_RELATION}.{APP_NAME}.app") + assert secret_out.latest_content.get(f"{INTERNAL_USER}-password") + + +def test_leader_elected_no_peer_relation(): + ctx = testing.Context(ValkeyCharm) + + container = testing.Container(name=CONTAINER, can_connect=True) + state_in = testing.State(leader=True, containers={container}) + with patch("workload_k8s.ValkeyK8sWorkload.write_file"): + state_out = ctx.run(ctx.on.leader_elected(), state_in) + assert "leader_elected" in [e.name for e in state_out.deferred] + + +def test_leader_elected_leader_password_specified(): + ctx = testing.Context(ValkeyCharm) + relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + container = testing.Container(name=CONTAINER, can_connect=True) + + password_secret = testing.Secret( + tracked_content={INTERNAL_USER: "secure-password"}, remote_grants=APP_NAME + ) + state_in = testing.State( + leader=True, + relations={relation}, + containers={container}, + secrets={password_secret}, + config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + ) + with ( + patch("workload_k8s.ValkeyK8sWorkload.write_file"), + patch("managers.config.ConfigManager.generate_password") as mock_generate, + ): + state_out = ctx.run(ctx.on.leader_elected(), state_in) + secret_out = state_out.get_secret(label=f"{PEER_RELATION}.{APP_NAME}.app") + assert secret_out.latest_content.get(f"{INTERNAL_USER}-password") == "secure-password" + mock_generate.assert_not_called() + + +def test_leader_elected_leader_password_specified_wrong_secret(): + ctx = testing.Context(ValkeyCharm) + relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + container = testing.Container(name=CONTAINER, can_connect=True) + + state_in = testing.State( + leader=True, + relations={relation}, + containers={container}, + config={INTERNAL_USER_PASSWORD_CONFIG: "secret:1tf1wk0tmfrodp8ofwxn"}, + ) + with ( + patch("workload_k8s.ValkeyK8sWorkload.write_file"), + pytest.raises(testing.errors.UncaughtCharmError) as exc_info, + ): + ctx.run(ctx.on.leader_elected(), state_in) + assert "SecretNotFoundError" in str(exc_info.value) + + +def test_config_changed_non_leader_unit(): + ctx = testing.Context(ValkeyCharm) + relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + container = testing.Container(name=CONTAINER, can_connect=True) + + state_in = testing.State( + leader=False, + relations={relation}, + containers={container}, + config={INTERNAL_USER_PASSWORD_CONFIG: "secret:1tf1wk0tmfrodp8ofwxn"}, + ) + with ( + patch("events.base_events.BaseEvents.update_admin_password") as mock_update, + ): + ctx.run(ctx.on.config_changed(), state_in) + mock_update.assert_not_called() + + +def test_config_changed_leader_unit_valkey_update_fails(): + ctx = testing.Context(ValkeyCharm) + relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + container = testing.Container(name=CONTAINER, can_connect=True) + + password_secret = testing.Secret( + tracked_content={INTERNAL_USER: "secure-password"}, remote_grants=APP_NAME + ) + state_in = testing.State( + leader=True, + relations={relation}, + containers={container}, + secrets={password_secret}, + config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + ) + with ( + patch("workload_k8s.ValkeyK8sWorkload.write_file"), + patch("common.client.ValkeyClient.create_client", side_effect=Exception("fail")), + patch("core.models.RelationState.update") as mock_update, + ): + ctx.run(ctx.on.config_changed(), state_in) + mock_update.assert_called_once() + + +def test_config_changed_leader_unit(): + ctx = testing.Context(ValkeyCharm) + relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + container = testing.Container(name=CONTAINER, can_connect=True) + + password_secret = testing.Secret( + tracked_content={INTERNAL_USER: "secure-password"}, remote_grants=APP_NAME + ) + state_in = testing.State( + leader=True, + relations={relation}, + containers={container}, + secrets={password_secret}, + config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + ) + with ( + patch("workload_k8s.ValkeyK8sWorkload.write_file"), + patch("common.client.ValkeyClient.update_password") as mock_update_password, + ): + state_out = ctx.run(ctx.on.config_changed(), state_in) + mock_update_password.assert_called_once_with( + username=INTERNAL_USER, new_password="secure-password" + ) + secret_out = state_out.get_secret(label=f"{PEER_RELATION}.{APP_NAME}.app") + assert secret_out.latest_content.get(f"{INTERNAL_USER}-password") == "secure-password" + + +def test_config_changed_leader_unit_wrong_username(): + ctx = testing.Context(ValkeyCharm) + relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + container = testing.Container(name=CONTAINER, can_connect=True) + + password_secret = testing.Secret( + tracked_content={"wrong-username": "secure-password"}, remote_grants=APP_NAME + ) + state_in = testing.State( + leader=True, + relations={relation}, + containers={container}, + secrets={password_secret}, + config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + ) + with ( + patch("workload_k8s.ValkeyK8sWorkload.write_file"), + patch("common.client.ValkeyClient.update_password") as mock_update_password, + ): + ctx.run(ctx.on.config_changed(), state_in) + mock_update_password.assert_not_called() + + +def test_config_changed_leader_unit_wrong_secret(): + ctx = testing.Context(ValkeyCharm) + relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + container = testing.Container(name=CONTAINER, can_connect=True) + + password_secret = testing.Secret( + tracked_content={"wrong-username": "secure-password"}, remote_grants=APP_NAME + ) + state_in = testing.State( + leader=True, + relations={relation}, + containers={container}, + config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + ) + with ( + patch("workload_k8s.ValkeyK8sWorkload.write_file"), + patch("common.client.ValkeyClient.update_password") as mock_update_password, + ): + ctx.run(ctx.on.config_changed(), state_in) + mock_update_password.assert_not_called() + + +def test_change_password_secret_changed_non_leader_unit(): + ctx = testing.Context(ValkeyCharm) + relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + container = testing.Container(name=CONTAINER, can_connect=True) + + password_secret = testing.Secret( + tracked_content={INTERNAL_USER: "secure-password"}, remote_grants=APP_NAME + ) + + state_in = testing.State( + leader=False, + relations={relation}, + containers={container}, + secrets={password_secret}, + config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + ) + with ( + patch("events.base_events.BaseEvents.update_admin_password") as mock_update_password, + ): + ctx.run(ctx.on.secret_changed(password_secret), state_in) + mock_update_password.assert_not_called() + + +def test_change_password_secret_changed_leader_unit(): + ctx = testing.Context(ValkeyCharm) + relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + container = testing.Container(name=CONTAINER, can_connect=True) + + password_secret = testing.Secret( + tracked_content={INTERNAL_USER: "secure-password"}, remote_grants=APP_NAME + ) + + state_in = testing.State( + leader=True, + relations={relation}, + containers={container}, + secrets={password_secret}, + config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + ) + with ( + patch("events.base_events.BaseEvents.update_admin_password") as mock_update_password, + ): + ctx.run(ctx.on.secret_changed(password_secret), state_in) + mock_update_password.assert_called_once_with(password_secret.id) From 8889bd526353490cb5068d56d60d679bfecf3f53 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 20 Jan 2026 14:09:15 +0000 Subject: [PATCH 006/282] add integeration tests --- poetry.lock | 12 +-- pyproject.toml | 1 + src/common/client.py | 31 +++++-- src/managers/cluster.py | 2 +- tests/integration/k8s/helpers.py | 135 +++++++++++++++++++++++++++- tests/integration/k8s/test_charm.py | 126 +++++++++++++++++++++++++- tox.ini | 2 +- 7 files changed, 292 insertions(+), 17 deletions(-) diff --git a/poetry.lock b/poetry.lock index 5c9f8e8..86b3887 100644 --- a/poetry.lock +++ b/poetry.lock @@ -66,7 +66,7 @@ version = "4.12.1" description = "High-level concurrency and networking framework on top of asyncio or Trio" optional = false python-versions = ">=3.9" -groups = ["main"] +groups = ["main", "integration"] files = [ {file = "anyio-4.12.1-py3-none-any.whl", hash = "sha256:d405828884fc140aa80a3c667b8beed277f1dfedec42ba031bd6ac3db606ab6c"}, {file = "anyio-4.12.1.tar.gz", hash = "sha256:41cfcc3a4c85d3f05c932da7c26d0201ac36f72abd4435ba90d0464a3ffed703"}, @@ -269,7 +269,7 @@ version = "3.11" description = "Internationalized Domain Names in Applications (IDNA)" optional = false python-versions = ">=3.8" -groups = ["main"] +groups = ["main", "integration"] files = [ {file = "idna-3.11-py3-none-any.whl", hash = "sha256:771a87f49d9defaf64091e6e6fe9c18d4833f140bd19464795bc32d966ca37ea"}, {file = "idna-3.11.tar.gz", hash = "sha256:795dafcc9c04ed0c1fb032c2aa73654d8e8c5023a7df64a53f39190ada629902"}, @@ -468,7 +468,7 @@ version = "6.33.4" description = "" optional = false python-versions = ">=3.9" -groups = ["main"] +groups = ["main", "integration"] files = [ {file = "protobuf-6.33.4-cp310-abi3-win32.whl", hash = "sha256:918966612c8232fc6c24c78e1cd89784307f5814ad7506c308ee3cf86662850d"}, {file = "protobuf-6.33.4-cp310-abi3-win_amd64.whl", hash = "sha256:8f11ffae31ec67fc2554c2ef891dcb561dae9a2a3ed941f9e134c2db06657dbc"}, @@ -865,7 +865,7 @@ version = "1.3.1" description = "Sniff out which async library your code is running under" optional = false python-versions = ">=3.7" -groups = ["main"] +groups = ["main", "integration"] files = [ {file = "sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2"}, {file = "sniffio-1.3.1.tar.gz", hash = "sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc"}, @@ -904,7 +904,7 @@ version = "0.0.0" description = "Valkey GLIDE Async client. Supports Valkey and Redis OSS." optional = false python-versions = ">=3.9" -groups = ["main"] +groups = ["main", "integration"] files = [] develop = false @@ -960,4 +960,4 @@ type = ["pytest-mypy"] [metadata] lock-version = "2.1" python-versions = "^3.12" -content-hash = "68cd6ebdf1633cde09c2e9079faed8d557645b266ace86836f9da88c97215dcc" +content-hash = "9721ba0790a1a564baa26313d5d1385a916ff9e9a510dd00c8b559b14247d55a" diff --git a/pyproject.toml b/pyproject.toml index 22e5bc7..e6cb1b7 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -48,6 +48,7 @@ allure-pytest = "*" allure-pytest-default-results = "^0.1.2" data-platform-helpers = ">=0.1.7" jubilant = "^1.6.0" +valkey-glide = { git = "https://github.com/skourta/valkey-glide", subdirectory = "python/glide-async", branch = "add-build-rs" } [tool.coverage.run] branch = true diff --git a/src/common/client.py b/src/common/client.py index 8cd94e3..ac9c941 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -5,6 +5,7 @@ import asyncio import logging +from typing import Any from glide import ( GlideClient, @@ -44,9 +45,31 @@ async def create_client(self) -> GlideClient: client_config = GlideClientConfiguration( addresses, credentials=credentials, + request_timeout=1000, # in milliseconds ) return await GlideClient.create(client_config) + async def _run_custom_command(self, command: list[str]) -> Any: + """Run a custom command on the Valkey client. + + Args: + command (list[str]): The command to run as a list of strings. + + Returns: + Any result from the command. + """ + client = None + try: + client = await self.create_client() + result = await asyncio.wait_for(client.custom_command(command), timeout=5) + return result + except Exception as e: + logger.error(f"Error running command {' '.join(command)}: {e}") + raise ValkeyUserManagementError(f"Could not run command {' '.join(command)}: {e}") + finally: + if client: + await client.close() + def update_password(self, username: str, new_password: str) -> None: """Update a user's password. @@ -54,11 +77,9 @@ def update_password(self, username: str, new_password: str) -> None: username (str): The username to update. new_password (str): The new password. """ - client = None try: - client = asyncio.run(self.create_client()) result = asyncio.run( - client.custom_command( + self._run_custom_command( [ "ACL", "SETUSER", @@ -68,10 +89,8 @@ def update_password(self, username: str, new_password: str) -> None: ] ) ) + logger.debug(f"Password update result: {result}") except Exception as e: logger.error(f"Error updating password for user {username}: {e}") raise ValkeyUserManagementError(f"Could not update password for user {username}: {e}") - finally: - if client: - asyncio.run(client.close()) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index aa0f626..cdfe142 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -53,7 +53,7 @@ def update_credentials(self, username: str, password: str) -> None: def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the cluster manager's statuses.""" status_list: list[StatusObject] = self.state.statuses.get( - scope=scope, component=self.name + scope=scope, component=self.name, running_status_only=True, running_status_type="async" ).root if not self.workload.can_connect: diff --git a/tests/integration/k8s/helpers.py b/tests/integration/k8s/helpers.py index c3f3c1a..37c467b 100644 --- a/tests/integration/k8s/helpers.py +++ b/tests/integration/k8s/helpers.py @@ -2,6 +2,7 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. +import contextlib import logging from enum import Enum from pathlib import Path @@ -10,7 +11,10 @@ import jubilant import yaml from data_platform_helpers.advanced_statuses.models import StatusObject -from ops import StatusBase +from glide import GlideClient, GlideClientConfiguration, NodeAddress, ServerCredentials +from ops import SecretNotFoundError, StatusBase + +from literals import CLIENT_PORT, INTERNAL_USER, INTERNAL_USER_PASSWORD_CONFIG logger = logging.getLogger(__name__) @@ -27,6 +31,11 @@ class CharmStatuses(Enum): status="blocked", message="Scaling Valkey is not implemented yet", ) + SECRET_ACCESS_ERROR = StatusObject( + status="blocked", + message="Cannot access configured secret, check permissions", + running="async", + ) def does_status_match( @@ -141,3 +150,127 @@ def verify_unit_count( unit_count[app] = 1 return all(count == len(status.get_units(app)) for app, count in unit_count.items()) + + +def get_cluster_hostnames(juju: jubilant.Juju, app_name: str) -> list[str]: + """Get the hostnames of all units in the Valkey application. + + Args: + juju: The Juju client instance. + app_name: The name of the Valkey application. + + Returns: + A list of hostnames for all units in the Valkey application. + """ + status = juju.status() + return [unit.address for unit in status.get_units(app_name).values()] + + +def get_secret_by_label(juju: jubilant.Juju, label: str) -> dict[str, str]: + for secret in juju.secrets(): + if label == secret.label: + revealed_secret = juju.show_secret(secret.uri, reveal=True) + return revealed_secret.content + + raise SecretNotFoundError(f"Secret with label {label} not found") + + +async def create_valkey_client( + hostnames: list[str], username: str | None = INTERNAL_USER, password: str | None = None +): + """Create and return a Valkey client connected to the cluster. + + Args: + hostnames: List of hostnames of the Valkey cluster nodes. + username: The username for authentication. + password: The password for the internal user. + + Returns: + A Valkey client instance connected to the cluster. + """ + addresses = [NodeAddress(host=host, port=CLIENT_PORT) for host in hostnames] + + credentials = None + if username or password: + credentials = ServerCredentials(username=username, password=password) + # TODO add back when we enable cluster mode + # client_config = GlideClusterClientConfiguration( + # addresses, + # credentials=credentials, + # ) + client_config = GlideClientConfiguration( + addresses, + credentials=credentials, + ) + return await GlideClient.create(client_config) + + +def set_password( + juju: jubilant.Juju, + password: str, + username: str = INTERNAL_USER, + application: str = APP_NAME, +) -> None: + """Set a user password (or update it if existing) via secret. + + Args: + juju: An instance of Jubilant's Juju class on which to run Juju commands + password: password to use + username: the user to set the password + application: the application the created secret will be granted to + """ + secret_name = "system_users_secret" + + # if secret exists, update it, else add secret + existing = next((s for s in juju.secrets() if s.name == secret_name), None) + if existing: + juju.update_secret(identifier=existing.uri, content={username: password}) + secret_id = existing.uri + else: + secret_id = juju.add_secret(name=secret_name, content={username: password}) + + # grant the application access to this secret + juju.grant_secret(identifier=secret_id, app=application) + + # update the application config to include the secret + juju.config(app=application, values={INTERNAL_USER_PASSWORD_CONFIG: secret_id}) + + +async def set_key( + hostnames: list[str], username: str, password: str, key: str, value: str +) -> bytes | None: + """Write a key-value pair to the Valkey cluster. + + Args: + hostnames: List of hostnames of the Valkey cluster nodes. + key: The key to write. + value: The value to write. + username: The username for authentication. + password: The password for authentication. + """ + client = await create_valkey_client(hostnames=hostnames, username=username, password=password) + return await client.set(key, value) + + +async def get_key(hostnames: list[str], username: str, password: str, key: str) -> bytes | None: + """Read a value from the Valkey cluster by key. + + Args: + hostnames: List of hostnames of the Valkey cluster nodes. + key: The key to read. + username: The username for authentication. + password: The password for authentication. + """ + client = await create_valkey_client(hostnames=hostnames, username=username, password=password) + return await client.get(key) + + +@contextlib.contextmanager +def fast_forward(juju: jubilant.Juju): + """Context manager that temporarily speeds up update-status hooks to fire every 10s.""" + old = juju.model_config()["update-status-hook-interval"] + juju.model_config({"update-status-hook-interval": "10s"}) + try: + yield + finally: + juju.model_config({"update-status-hook-interval": old}) diff --git a/tests/integration/k8s/test_charm.py b/tests/integration/k8s/test_charm.py index 2c1013b..5104f76 100644 --- a/tests/integration/k8s/test_charm.py +++ b/tests/integration/k8s/test_charm.py @@ -2,15 +2,33 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. import logging +from time import sleep import jubilant import pytest -from .helpers import APP_NAME, IMAGE_RESOURCE, CharmStatuses, does_status_match +from literals import INTERNAL_USER, INTERNAL_USER_PASSWORD_CONFIG, PEER_RELATION + +from .helpers import ( + APP_NAME, + IMAGE_RESOURCE, + CharmStatuses, + create_valkey_client, + does_status_match, + fast_forward, + get_cluster_hostnames, + get_key, + get_secret_by_label, + set_key, + set_password, +) logger = logging.getLogger(__name__) -NUM_UNITS = 3 +# TODO scale up when scaling is implemented +NUM_UNITS = 1 +TEST_KEY = "test_key" +TEST_VALUE = "test_value" @pytest.mark.abort_on_fail @@ -24,3 +42,107 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: ), timeout=600, ) + + +@pytest.mark.abort_on_fail +async def test_authentication(juju: jubilant.Juju) -> None: + """Assert that we can authenticate to valkey.""" + hostnames = get_cluster_hostnames(juju, APP_NAME) + + # try without authentication + with pytest.raises(Exception) as exc_info: + unauth_client = await create_valkey_client( + hostnames=hostnames, username=None, password=None + ) + await unauth_client.ping() + assert "NOAUTH" in str(exc_info.value), "Unauthenticated access did not fail as expected" + + # Authenticate with internal user + secret = get_secret_by_label(juju, label=f"{PEER_RELATION}.{APP_NAME}.app") + password = secret.get(f"{INTERNAL_USER}-password") + assert password is not None, "Admin password secret not found" + + client = await create_valkey_client(hostnames=hostnames, password=password) + auth_result = await client.ping() + assert auth_result == b"PONG", "Authentication to Valkey cluster failed" + + +@pytest.mark.abort_on_fail +async def test_update_admin_password(juju: jubilant.Juju) -> None: + """Assert the admin password is updated when adding a user secret to the config.""" + hostnames = get_cluster_hostnames(juju, APP_NAME) + + # create a user secret and grant it to the application + new_password = "some-password" + set_password(juju, new_password) + + # wait for config-changed hook to finish executing + juju.wait(lambda status: jubilant.all_agents_idle(status, APP_NAME), timeout=1200) + + # perform read operation with the updated password + result = await set_key( + hostnames=hostnames, + username=INTERNAL_USER, + password=new_password, + key=TEST_KEY, + value=TEST_VALUE, + ) + assert result == "OK", "Failed to write data after admin password update" + + # update the config again and remove the option `admin-password` + juju.config(app=APP_NAME, reset=[INTERNAL_USER_PASSWORD_CONFIG]) + + # wait for config-changed hook to finish executing + juju.wait(lambda status: jubilant.all_agents_idle(status, APP_NAME), timeout=1200) + + # make sure we can still read data with the previously set password + assert await get_key( + hostnames=hostnames, username=INTERNAL_USER, password=new_password, key=TEST_KEY + ) == bytes(TEST_VALUE, "utf-8") + + +@pytest.mark.abort_on_fail +async def test_user_secret_permissions(juju: jubilant.Juju) -> None: + """If a user secret is not granted, ensure we can process updated permissions.""" + hostnames = get_cluster_hostnames(juju, APP_NAME) + + logger.info("Creating new user secret") + secret_name = "my_secret" + new_password = "even-newer-password" + secret_id = juju.add_secret(name=secret_name, content={INTERNAL_USER: new_password}) + + logger.info("Updating configuration with the new secret - but without access") + juju.config(app=APP_NAME, values={INTERNAL_USER_PASSWORD_CONFIG: secret_id}) + + juju.wait( + lambda status: does_status_match( + status, + expected_app_statuses={APP_NAME: [CharmStatuses.SECRET_ACCESS_ERROR.value]}, + ), + timeout=1200, + ) + + logger.info("Secret access will be granted now - wait for updated password") + # deferred `config_changed` event will be retried before `update_status` + with fast_forward(juju): + juju.grant_secret(identifier=secret_name, app=APP_NAME) + sleep(10) # allow some time for the permission to propagate + + # juju.wait( + # lambda status: jubilant.all_active(status, APP_NAME), + # timeout=1200, + # ) + juju.wait( + lambda status: does_status_match( + status, + expected_app_statuses={APP_NAME: [CharmStatuses.SCALING_NOT_IMPLEMENTED.value]}, + ), + timeout=600, + ) + + # perform read operation with the updated password + assert await get_key( + hostnames=hostnames, username=INTERNAL_USER, password=new_password, key=TEST_KEY + ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data after secret permissions were updated" + + logger.info("Password update successful after secret was granted") diff --git a/tox.ini b/tox.ini index c2c8f7a..c4e23b0 100644 --- a/tox.ini +++ b/tox.ini @@ -68,5 +68,5 @@ commands_pre = poetry install --only integration commands = # on CI, concierge will setup the model `testing` - locally we need to do it ourselves - sh -c "if [ -z "$CI" ]; then juju add-model testing; fi;" + sh -c "if [ -z "$CI" ]; then juju add-model testing && juju model-config logging-config='=INFO;unit=DEBUG'; fi;" poetry run pytest -v --tb native --log-cli-level=INFO -s --ignore={[vars]tests_path}/unit/ {posargs} \ No newline at end of file From 7157121be8f71db97cfd3c058e3907353d53d79b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 20 Jan 2026 14:16:46 +0000 Subject: [PATCH 007/282] add install deps to ci unit tests --- .github/workflows/ci.yaml | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml index 2d997d6..80d5cb4 100644 --- a/.github/workflows/ci.yaml +++ b/.github/workflows/ci.yaml @@ -35,6 +35,10 @@ jobs: run: | pipx install tox pipx install poetry + # to build Valkey-glide during tests + - name: Install dependencies + run: | + apt install libprotobuf-dev protobuf-compiler - name: Run tests run: tox run -e unit - name: Upload Coverage to Codecov From 90750a151ff8e25f6d6e9aeac3930809c2fc43e7 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 20 Jan 2026 14:19:08 +0000 Subject: [PATCH 008/282] add sudo to apt --- .github/workflows/ci.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml index 80d5cb4..db69c95 100644 --- a/.github/workflows/ci.yaml +++ b/.github/workflows/ci.yaml @@ -38,7 +38,7 @@ jobs: # to build Valkey-glide during tests - name: Install dependencies run: | - apt install libprotobuf-dev protobuf-compiler + sudo apt install libprotobuf-dev protobuf-compiler - name: Run tests run: tox run -e unit - name: Upload Coverage to Codecov From 6a80e4603bf34cf03fb9a85d6639d7863baca4d9 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 20 Jan 2026 14:37:03 +0000 Subject: [PATCH 009/282] install protobug for glide on integration tests --- .github/workflows/integration_test.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/.github/workflows/integration_test.yaml b/.github/workflows/integration_test.yaml index 129dbb2..60634c0 100644 --- a/.github/workflows/integration_test.yaml +++ b/.github/workflows/integration_test.yaml @@ -108,6 +108,8 @@ jobs: sudo snap install charmcraft --classic sudo snap install go --classic go install github.com/snapcore/spread/cmd/spread@latest + # to build Valkey-glide during tests + sudo apt install libprotobuf-dev protobuf-compiler - name: Download packed charm(s) timeout-minutes: 5 uses: actions/download-artifact@v6 From 301e62736ac77c7bb1cf51d96c1be2714e92bb16 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 21 Jan 2026 04:33:15 +0000 Subject: [PATCH 010/282] auto approve installing deps --- .github/workflows/integration_test.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/.github/workflows/integration_test.yaml b/.github/workflows/integration_test.yaml index 60634c0..2621d80 100644 --- a/.github/workflows/integration_test.yaml +++ b/.github/workflows/integration_test.yaml @@ -109,7 +109,7 @@ jobs: sudo snap install go --classic go install github.com/snapcore/spread/cmd/spread@latest # to build Valkey-glide during tests - sudo apt install libprotobuf-dev protobuf-compiler + sudo apt install libprotobuf-dev protobuf-compiler -y - name: Download packed charm(s) timeout-minutes: 5 uses: actions/download-artifact@v6 From 2be061ca67b120ff51f61953c07245ce6a0937d7 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 21 Jan 2026 05:12:16 +0000 Subject: [PATCH 011/282] update rust --- .github/workflows/integration_test.yaml | 3 +++ 1 file changed, 3 insertions(+) diff --git a/.github/workflows/integration_test.yaml b/.github/workflows/integration_test.yaml index 2621d80..52ef9ef 100644 --- a/.github/workflows/integration_test.yaml +++ b/.github/workflows/integration_test.yaml @@ -110,6 +110,9 @@ jobs: go install github.com/snapcore/spread/cmd/spread@latest # to build Valkey-glide during tests sudo apt install libprotobuf-dev protobuf-compiler -y + apt-get install rustup -y + rustup set profile minimal + rustup default 1.90.0 - name: Download packed charm(s) timeout-minutes: 5 uses: actions/download-artifact@v6 From e2ea39fe7cdf965ce47a1a4c0da0aad882bd4f6b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 21 Jan 2026 05:22:59 +0000 Subject: [PATCH 012/282] sudo apt --- .github/workflows/integration_test.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/.github/workflows/integration_test.yaml b/.github/workflows/integration_test.yaml index 52ef9ef..d7112c5 100644 --- a/.github/workflows/integration_test.yaml +++ b/.github/workflows/integration_test.yaml @@ -110,7 +110,7 @@ jobs: go install github.com/snapcore/spread/cmd/spread@latest # to build Valkey-glide during tests sudo apt install libprotobuf-dev protobuf-compiler -y - apt-get install rustup -y + sudo apt install rustup -y rustup set profile minimal rustup default 1.90.0 - name: Download packed charm(s) From 07353c32c491613412790ea2c823d2b32c6f75cd Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 21 Jan 2026 05:41:14 +0000 Subject: [PATCH 013/282] set default rust on spread --- spread.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/spread.yaml b/spread.yaml index 1bf511e..a6ee5f5 100644 --- a/spread.yaml +++ b/spread.yaml @@ -117,6 +117,7 @@ prepare: | concierge prepare --trace pipx install tox poetry + rustup default 1.90.0 prepare-each: | cd "$SPREAD_PATH" # `concierge prepare` needs to be run for each spread job in case Juju version changed From a8a2f18a132ad1f45160cc11ffb16f64e80dcc3e Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 21 Jan 2026 07:27:28 +0000 Subject: [PATCH 014/282] save acl after udpating password so the change persists across restarts --- src/common/client.py | 13 +++++++++++++ src/managers/cluster.py | 2 ++ tests/unit/test_charm.py | 2 ++ 3 files changed, 17 insertions(+) diff --git a/src/common/client.py b/src/common/client.py index ac9c941..d1b6f1d 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -94,3 +94,16 @@ def update_password(self, username: str, new_password: str) -> None: except Exception as e: logger.error(f"Error updating password for user {username}: {e}") raise ValkeyUserManagementError(f"Could not update password for user {username}: {e}") + + def save_acl(self) -> None: + """Save ACL content to the Valkey server. + + Args: + acl_content (str): The ACL content to save. + """ + try: + result = asyncio.run(self._run_custom_command(["ACL", "SAVE"])) + logger.debug(f"ACL save result: {result}") + except Exception as e: + logger.error(f"Error saving ACL: {e}") + raise ValkeyUserManagementError(f"Could not save ACL: {e}") diff --git a/src/managers/cluster.py b/src/managers/cluster.py index cdfe142..3ceaa85 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -47,6 +47,8 @@ def update_credentials(self, username: str, password: str) -> None: hosts=self.cluster_hostnames, ) client.update_password(username=username, new_password=password) + client.password = password + client.save_acl() except ValkeyUserManagementError: raise diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 16bd6d5..1d42fed 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -289,11 +289,13 @@ def test_config_changed_leader_unit(): with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("common.client.ValkeyClient.update_password") as mock_update_password, + patch("common.client.ValkeyClient.save_acl") as mock_save_acl, ): state_out = ctx.run(ctx.on.config_changed(), state_in) mock_update_password.assert_called_once_with( username=INTERNAL_USER, new_password="secure-password" ) + mock_save_acl.assert_called_once() secret_out = state_out.get_secret(label=f"{PEER_RELATION}.{APP_NAME}.app") assert secret_out.latest_content.get(f"{INTERNAL_USER}-password") == "secure-password" From 87c443e761d2c59de4d879c37277b1e0e3a0d0c1 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 22 Jan 2026 04:59:27 +0000 Subject: [PATCH 015/282] feedback from rene --- pyproject.toml | 4 +++- src/common/client.py | 4 ++-- tests/unit/test_charm.py | 28 +++++----------------------- 3 files changed, 10 insertions(+), 26 deletions(-) diff --git a/pyproject.toml b/pyproject.toml index e6cb1b7..6b0ae59 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -6,10 +6,12 @@ package-mode = false requires-poetry = ">=2.0.0" [tool.poetry.dependencies] -python = "^3.12" # switch to 3.14 once charm base is 26.04 +python = "^3.12" # switch to 3.14 once charm base is 26.04 ops = "^3.5.0" charmlibs-pathops = "^1.2.0" data-platform-helpers = ">=0.1.7" +# TODO replace with official release once build from source is possible +# https://github.com/valkey-io/valkey-glide/pull/5202 valkey-glide = { git = "https://github.com/skourta/valkey-glide", subdirectory = "python/glide-async", branch = "add-build-rs" } [tool.poetry.requires-plugins] diff --git a/src/common/client.py b/src/common/client.py index d1b6f1d..1b10371 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -64,8 +64,8 @@ async def _run_custom_command(self, command: list[str]) -> Any: result = await asyncio.wait_for(client.custom_command(command), timeout=5) return result except Exception as e: - logger.error(f"Error running command {' '.join(command)}: {e}") - raise ValkeyUserManagementError(f"Could not run command {' '.join(command)}: {e}") + logger.error("Error running custom command: %s", e) + raise ValkeyUserManagementError(f"Could not run custom command: {e}") finally: if client: await client.close() diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 1d42fed..7837c15 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -233,12 +233,16 @@ def test_config_changed_non_leader_unit(): ctx = testing.Context(ValkeyCharm) relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) container = testing.Container(name=CONTAINER, can_connect=True) + password_secret = testing.Secret( + tracked_content={INTERNAL_USER: "secure-password"}, remote_grants=APP_NAME + ) state_in = testing.State( leader=False, relations={relation}, containers={container}, - config={INTERNAL_USER_PASSWORD_CONFIG: "secret:1tf1wk0tmfrodp8ofwxn"}, + secrets={password_secret}, + config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, ) with ( patch("events.base_events.BaseEvents.update_admin_password") as mock_update, @@ -323,28 +327,6 @@ def test_config_changed_leader_unit_wrong_username(): mock_update_password.assert_not_called() -def test_config_changed_leader_unit_wrong_secret(): - ctx = testing.Context(ValkeyCharm) - relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) - container = testing.Container(name=CONTAINER, can_connect=True) - - password_secret = testing.Secret( - tracked_content={"wrong-username": "secure-password"}, remote_grants=APP_NAME - ) - state_in = testing.State( - leader=True, - relations={relation}, - containers={container}, - config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, - ) - with ( - patch("workload_k8s.ValkeyK8sWorkload.write_file"), - patch("common.client.ValkeyClient.update_password") as mock_update_password, - ): - ctx.run(ctx.on.config_changed(), state_in) - mock_update_password.assert_not_called() - - def test_change_password_secret_changed_non_leader_unit(): ctx = testing.Context(ValkeyCharm) relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) From 2cd5c8b5950cf0742f1296f138f129d2eb7c4a4c Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 22 Jan 2026 09:10:27 +0000 Subject: [PATCH 016/282] switch updating password to write acl file and then load it --- src/common/client.py | 46 +++++--------------------------- src/events/base_events.py | 7 ++--- src/managers/cluster.py | 13 +++------ src/managers/config.py | 16 +++++++---- tests/integration/k8s/helpers.py | 5 ---- tests/unit/test_charm.py | 14 +++++----- 6 files changed, 30 insertions(+), 71 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index 1b10371..e88a1a6 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -37,11 +37,6 @@ async def create_client(self) -> GlideClient: """Initialize the Valkey client.""" addresses = [NodeAddress(host=host, port=CLIENT_PORT) for host in self.hosts] credentials = ServerCredentials(username=self.user, password=self.password) - # TODO add back when we enable cluster mode - # client_config = GlideClusterClientConfiguration( - # addresses, - # credentials=credentials, - # ) client_config = GlideClientConfiguration( addresses, credentials=credentials, @@ -70,40 +65,11 @@ async def _run_custom_command(self, command: list[str]) -> Any: if client: await client.close() - def update_password(self, username: str, new_password: str) -> None: - """Update a user's password. - - Args: - username (str): The username to update. - new_password (str): The new password. - """ - try: - result = asyncio.run( - self._run_custom_command( - [ - "ACL", - "SETUSER", - username, - "resetpass", - f">{new_password}", - ] - ) - ) - - logger.debug(f"Password update result: {result}") - except Exception as e: - logger.error(f"Error updating password for user {username}: {e}") - raise ValkeyUserManagementError(f"Could not update password for user {username}: {e}") - - def save_acl(self) -> None: - """Save ACL content to the Valkey server. - - Args: - acl_content (str): The ACL content to save. - """ + def load_acl(self) -> None: + """Load ACL content to the Valkey server.""" try: - result = asyncio.run(self._run_custom_command(["ACL", "SAVE"])) - logger.debug(f"ACL save result: {result}") + result = asyncio.run(self._run_custom_command(["ACL", "LOAD"])) + logger.debug(f"ACL load result: {result}") except Exception as e: - logger.error(f"Error saving ACL: {e}") - raise ValkeyUserManagementError(f"Could not save ACL: {e}") + logger.error(f"Error loading ACL: {e}") + raise ValkeyUserManagementError(f"Could not load ACL: {e}") diff --git a/src/events/base_events.py b/src/events/base_events.py index 9a8def6..0125411 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -82,6 +82,8 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: """Handle the secret_changed event.""" + # TODO For a multi-node cluster the units should independently update their passwords. + # If they fail the event should be deferred and retried. if not self.charm.unit.is_leader(): return @@ -105,9 +107,8 @@ def update_admin_password(self, admin_secret_id: str) -> None: ): logger.debug(f"{INTERNAL_USER_PASSWORD_CONFIG} have changed.") try: - self.charm.cluster_manager.update_credentials( - username=INTERNAL_USER, password=new_password - ) + self.charm.config_manager.set_acl_file(new_password) + self.charm.cluster_manager.load_acl_file() self.charm.state.cluster.update( {"charmed_operator_password": new_password} ) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 3ceaa85..bbd3073 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -33,22 +33,15 @@ def __init__(self, state: ClusterState, workload: WorkloadBase): self.admin_password = self.state.cluster.internal_user_credentials.get(INTERNAL_USER, "") self.cluster_hostnames = [server.model.hostname for server in self.state.servers] - def update_credentials(self, username: str, password: str) -> None: - """Update a user's password. - - Args: - username (str): The username to update. - password (str): The new password. - """ + def load_acl_file(self) -> None: + """Load the ACL file into the cluster.""" try: client = ValkeyClient( username=self.admin_user, password=self.admin_password, hosts=self.cluster_hostnames, ) - client.update_password(username=username, new_password=password) - client.password = password - client.save_acl() + client.load_acl() except ValkeyUserManagementError: raise diff --git a/src/managers/config.py b/src/managers/config.py index 2340aa9..32ae023 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -76,12 +76,18 @@ def set_config_properties(self) -> None: logger.debug("Writing configuration") self.workload.write_config_file(config=self.config_properties) - def set_acl_file(self) -> None: - """Write the ACL file with appropriate user permissions.""" + def set_acl_file(self, charmed_operator_password: str = "") -> None: + """Write the ACL file with appropriate user permissions. + + Args: + charmed_operator_password (str): Password for the charmed-operator user. If not provided, + the password from the cluster state will be used. + """ logger.debug("Writing ACL configuration") - charmed_operator_password = self.state.cluster.internal_user_credentials.get( - INTERNAL_USER, "" - ) + if not charmed_operator_password: + charmed_operator_password = self.state.cluster.internal_user_credentials.get( + INTERNAL_USER, "" + ) # sha256 hash the password charmed_operator_password_hash = hashlib.sha256( charmed_operator_password.encode("utf-8") diff --git a/tests/integration/k8s/helpers.py b/tests/integration/k8s/helpers.py index 37c467b..98c2ba3 100644 --- a/tests/integration/k8s/helpers.py +++ b/tests/integration/k8s/helpers.py @@ -193,11 +193,6 @@ async def create_valkey_client( credentials = None if username or password: credentials = ServerCredentials(username=username, password=password) - # TODO add back when we enable cluster mode - # client_config = GlideClusterClientConfiguration( - # addresses, - # credentials=credentials, - # ) client_config = GlideClientConfiguration( addresses, credentials=credentials, diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 7837c15..34b4d00 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -292,14 +292,12 @@ def test_config_changed_leader_unit(): ) with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), - patch("common.client.ValkeyClient.update_password") as mock_update_password, - patch("common.client.ValkeyClient.save_acl") as mock_save_acl, + patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, + patch("common.client.ValkeyClient.load_acl") as mock_load_acl, ): state_out = ctx.run(ctx.on.config_changed(), state_in) - mock_update_password.assert_called_once_with( - username=INTERNAL_USER, new_password="secure-password" - ) - mock_save_acl.assert_called_once() + mock_set_acl_file.assert_called_once() + mock_load_acl.assert_called_once() secret_out = state_out.get_secret(label=f"{PEER_RELATION}.{APP_NAME}.app") assert secret_out.latest_content.get(f"{INTERNAL_USER}-password") == "secure-password" @@ -321,10 +319,10 @@ def test_config_changed_leader_unit_wrong_username(): ) with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), - patch("common.client.ValkeyClient.update_password") as mock_update_password, + patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, ): ctx.run(ctx.on.config_changed(), state_in) - mock_update_password.assert_not_called() + mock_set_acl_file.assert_not_called() def test_change_password_secret_changed_non_leader_unit(): From 1f73be7bcf2b319b642104d4220bc113e196b9f4 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 26 Jan 2026 05:23:18 +0000 Subject: [PATCH 017/282] implement feedback --- config.yaml | 2 +- src/common/client.py | 11 +++++++---- src/common/exceptions.py | 10 +++++++++- src/events/base_events.py | 5 +++-- src/managers/cluster.py | 4 ++-- 5 files changed, 22 insertions(+), 10 deletions(-) diff --git a/config.yaml b/config.yaml index bf71dcd..3fe2d8e 100644 --- a/config.yaml +++ b/config.yaml @@ -8,4 +8,4 @@ options: Configure the internal system user and it's password. The password will be auto-generated if this option is not set. It is for internal use only and SHOULD NOT be used by applications. This needs to be a Juju Secret URI pointing - to a secret that contains the following content: `root: `. \ No newline at end of file + to a secret that contains the following content: `root: `. diff --git a/src/common/client.py b/src/common/client.py index e88a1a6..d851361 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -14,7 +14,10 @@ ServerCredentials, ) -from common.exceptions import ValkeyUserManagementError +from common.exceptions import ( + ValkeyACLLoadError, + ValkeyCustomCommandError, +) from literals import CLIENT_PORT logger = logging.getLogger(__name__) @@ -60,7 +63,7 @@ async def _run_custom_command(self, command: list[str]) -> Any: return result except Exception as e: logger.error("Error running custom command: %s", e) - raise ValkeyUserManagementError(f"Could not run custom command: {e}") + raise ValkeyCustomCommandError(f"Could not run custom command: {e}") finally: if client: await client.close() @@ -70,6 +73,6 @@ def load_acl(self) -> None: try: result = asyncio.run(self._run_custom_command(["ACL", "LOAD"])) logger.debug(f"ACL load result: {result}") - except Exception as e: + except ValkeyCustomCommandError as e: logger.error(f"Error loading ACL: {e}") - raise ValkeyUserManagementError(f"Could not load ACL: {e}") + raise ValkeyACLLoadError(f"Could not load ACL: {e}") diff --git a/src/common/exceptions.py b/src/common/exceptions.py index acd66c1..71e16bc 100644 --- a/src/common/exceptions.py +++ b/src/common/exceptions.py @@ -4,5 +4,13 @@ """Charm-specific exceptions.""" -class ValkeyUserManagementError(Exception): +class ValkeyClientError(Exception): """Custom Exception if user could not be added or updated in valkey cluster.""" + + +class ValkeyCustomCommandError(ValkeyClientError): + """Custom Exception if a custom command fails on valkey cluster.""" + + +class ValkeyACLLoadError(ValkeyClientError): + """Custom Exception if ACL file could not be loaded in valkey cluster.""" diff --git a/src/events/base_events.py b/src/events/base_events.py index 0125411..3c375cd 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -10,7 +10,7 @@ import ops -from common.exceptions import ValkeyUserManagementError +from common.exceptions import ValkeyClientError from literals import INTERNAL_USER, INTERNAL_USER_PASSWORD_CONFIG, PEER_RELATION from statuses import CharmStatuses, ClusterStatuses @@ -57,6 +57,7 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: password = self.charm.state.get_secret_from_id(str(admin_secret_id)).get( INTERNAL_USER ) + # TODO consider deferring and blocking the charm except (ops.ModelError, ops.SecretNotFoundError) as e: logger.error(f"Could not access secret {admin_secret_id}: {e}") raise @@ -112,7 +113,7 @@ def update_admin_password(self, admin_secret_id: str) -> None: self.charm.state.cluster.update( {"charmed_operator_password": new_password} ) - except ValkeyUserManagementError as e: + except ValkeyClientError as e: logger.error(e) self.charm.status.set_running_status( ClusterStatuses.PASSWORD_UPDATE_FAILED.value, diff --git a/src/managers/cluster.py b/src/managers/cluster.py index bbd3073..ccb2681 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -11,7 +11,7 @@ from data_platform_helpers.advanced_statuses.types import Scope from common.client import ValkeyClient -from common.exceptions import ValkeyUserManagementError +from common.exceptions import ValkeyACLLoadError from core.base_workload import WorkloadBase from core.cluster_state import ClusterState from literals import INTERNAL_USER @@ -42,7 +42,7 @@ def load_acl_file(self) -> None: hosts=self.cluster_hostnames, ) client.load_acl() - except ValkeyUserManagementError: + except ValkeyACLLoadError: raise def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: From b51956dcc18c44f021fac5aa9d5f1343a7f1f6cc Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 27 Jan 2026 05:34:12 +0000 Subject: [PATCH 018/282] add different charm users --- src/core/models.py | 17 +++-- src/events/base_events.py | 140 +++++++++++++++++++++++++------------- src/literals.py | 26 ++++++- src/managers/cluster.py | 8 ++- src/managers/config.py | 42 ++++++++---- 5 files changed, 160 insertions(+), 73 deletions(-) diff --git a/src/core/models.py b/src/core/models.py index de27f03..5796359 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -17,7 +17,7 @@ ) from pydantic import Field -from literals import INTERNAL_USER +from literals import CharmUsers logger = logging.getLogger(__name__) @@ -26,6 +26,9 @@ class PeerAppModel(PeerModel): """Model for the peer application data.""" charmed_operator_password: ExtraSecretStr = Field(default="") + charmed_sentinel_valkey_password: ExtraSecretStr = Field(default="") + charmed_replication_password: ExtraSecretStr = Field(default="") + charmed_sentinel_operator_password: ExtraSecretStr = Field(default="") class PeerUnitModel(PeerModel): @@ -129,7 +132,11 @@ def model(self) -> PeerAppModel | None: @property def internal_user_credentials(self) -> dict[str, str]: """Retrieve the credentials for the internal admin user.""" - if self.model and (password := self.model.charmed_operator_password): - return {INTERNAL_USER: password} - - return {} + passwords = {} + if not self.model: + return passwords + + for user in CharmUsers: + if password := getattr(self.model, f"{user.value.replace('-', '_')}_password", ""): + passwords[user.value] = password + return passwords diff --git a/src/events/base_events.py b/src/events/base_events.py index 3c375cd..6500647 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -11,7 +11,7 @@ import ops from common.exceptions import ValkeyClientError -from literals import INTERNAL_USER, INTERNAL_USER_PASSWORD_CONFIG, PEER_RELATION +from literals import INTERNAL_USERS_PASSWORD_CONFIG, PEER_RELATION, CharmUsers from statuses import CharmStatuses, ClusterStatuses if TYPE_CHECKING: @@ -52,19 +52,42 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: return if self.charm.unit.is_leader() and not self.charm.state.cluster.internal_user_credentials: - if admin_secret_id := self.charm.config.get(INTERNAL_USER_PASSWORD_CONFIG): + passwords = {} + user_specified_passwords = {} + if admin_secret_id := self.charm.config.get(INTERNAL_USERS_PASSWORD_CONFIG): try: - password = self.charm.state.get_secret_from_id(str(admin_secret_id)).get( - INTERNAL_USER + user_specified_passwords = self.charm.state.get_secret_from_id( + str(admin_secret_id) ) - # TODO consider deferring and blocking the charm except (ops.ModelError, ops.SecretNotFoundError) as e: logger.error(f"Could not access secret {admin_secret_id}: {e}") - raise - else: - password = self.charm.config_manager.generate_password() + self.charm.status.set_running_status( + CharmStatuses.SECRET_ACCESS_ERROR.value, + scope="app", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + event.defer() + return + + self.charm.state.statuses.delete( + CharmStatuses.SECRET_ACCESS_ERROR.value, + scope="app", + component=self.charm.cluster_manager.name, + ) + + # generate passwords for all internal users if not specified in the user secret + for user in CharmUsers: + passwords[user.value] = user_specified_passwords.get( + user.value, self.charm.config_manager.generate_password() + ) - self.charm.state.cluster.update({"charmed_operator_password": password}) + self.charm.state.cluster.update( + { + f"{user.value.replace('-', '_')}_password": passwords[user.value] + for user in CharmUsers + } + ) self.charm.config_manager.set_acl_file() def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: @@ -74,9 +97,9 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: if not self.charm.unit.is_leader(): return - if admin_secret_id := self.charm.config.get(INTERNAL_USER_PASSWORD_CONFIG): + if admin_secret_id := self.charm.config.get(INTERNAL_USERS_PASSWORD_CONFIG): try: - self.update_admin_password(str(admin_secret_id)) + self._update_internal_users_password(str(admin_secret_id)) except (ops.ModelError, ops.SecretNotFoundError): event.defer() return @@ -88,49 +111,22 @@ def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: if not self.charm.unit.is_leader(): return - if admin_secret_id := self.charm.config.get(INTERNAL_USER_PASSWORD_CONFIG): + if admin_secret_id := self.charm.config.get(INTERNAL_USERS_PASSWORD_CONFIG): if admin_secret_id == event.secret.id: try: - self.update_admin_password(str(admin_secret_id)) + self._update_internal_users_password(str(admin_secret_id)) except (ops.ModelError, ops.SecretNotFoundError): event.defer() return - def update_admin_password(self, admin_secret_id: str) -> None: - """Compare current admin password and update in valkey if required.""" + def _update_internal_users_password(self, secret_id: str) -> None: + """Update internal users' passwords in charm/valkey if they have changed. + + Args: + secret_id (str): The id of the secret containing the internal users' passwords. + """ try: - if new_password := self.charm.state.get_secret_from_id(admin_secret_id).get( - INTERNAL_USER - ): - # only update admin credentials if the password has changed - if new_password != self.charm.state.cluster.internal_user_credentials.get( - INTERNAL_USER - ): - logger.debug(f"{INTERNAL_USER_PASSWORD_CONFIG} have changed.") - try: - self.charm.config_manager.set_acl_file(new_password) - self.charm.cluster_manager.load_acl_file() - self.charm.state.cluster.update( - {"charmed_operator_password": new_password} - ) - except ValkeyClientError as e: - logger.error(e) - self.charm.status.set_running_status( - ClusterStatuses.PASSWORD_UPDATE_FAILED.value, - scope="app", - component_name=self.charm.cluster_manager.name, - statuses_state=self.charm.state.statuses, - ) - return - else: - logger.error(f"Invalid username in secret {admin_secret_id}.") - self.charm.status.set_running_status( - ClusterStatuses.PASSWORD_UPDATE_FAILED.value, - scope="app", - component_name=self.charm.cluster_manager.name, - statuses_state=self.charm.state.statuses, - ) - return + secret_content = self.charm.state.get_secret_from_id(secret_id) except (ops.ModelError, ops.SecretNotFoundError) as e: logger.error(e) self.charm.status.set_running_status( @@ -142,12 +138,58 @@ def update_admin_password(self, admin_secret_id: str) -> None: raise self.charm.state.statuses.delete( - ClusterStatuses.PASSWORD_UPDATE_FAILED.value, + CharmStatuses.SECRET_ACCESS_ERROR.value, scope="app", component=self.charm.cluster_manager.name, ) + + # Check which passwords have changed + old_passwords = self.charm.state.cluster.internal_user_credentials + passwords = {user.value: old_passwords.get(user.value, "") for user in CharmUsers} + for user in CharmUsers: + new_password = secret_content.get(user.value) + if not new_password: + continue + # only update user credentials if the password has changed + if new_password != passwords.get(user.value): + logger.debug(f"Password for user {user.value} has changed.") + passwords[user.value] = new_password + + # check if there are any users that are in the secret but not in the CharmUsers + for key in secret_content.keys(): + if key not in passwords: + logger.error(f"Invalid username in secret {secret_id}.") + self.charm.status.set_running_status( + ClusterStatuses.PASSWORD_UPDATE_FAILED.value, + scope="app", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + return + + # Update passwords if any have changed + if passwords != old_passwords: + try: + self.charm.config_manager.set_acl_file(passwords=passwords) + self.charm.cluster_manager.load_acl_file() + self.charm.state.cluster.update( + { + f"{user.value.replace('-', '_')}_password": passwords[user.value] + for user in CharmUsers + } + ) + except ValkeyClientError as e: + logger.error(e) + self.charm.status.set_running_status( + ClusterStatuses.PASSWORD_UPDATE_FAILED.value, + scope="app", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + return + self.charm.state.statuses.delete( - CharmStatuses.SECRET_ACCESS_ERROR.value, + ClusterStatuses.PASSWORD_UPDATE_FAILED.value, scope="app", component=self.charm.cluster_manager.name, ) diff --git a/src/literals.py b/src/literals.py index 61e0f04..7918351 100644 --- a/src/literals.py +++ b/src/literals.py @@ -4,6 +4,8 @@ """Collection of global literals for the Valkey charm.""" +from enum import Enum + CHARM = "valkey" CHARM_USER = "valkey" CONTAINER = "valkey" @@ -14,7 +16,27 @@ PEER_RELATION = "valkey-peers" STATUS_PEERS_RELATION = "status-peers" -INTERNAL_USER = "charmed-operator" -INTERNAL_USER_PASSWORD_CONFIG = "system-users" +INTERNAL_USERS_PASSWORD_CONFIG = "system-users" CLIENT_PORT = 6379 + + +# As per the valkey users spec +# https://docs.google.com/document/d/1EImKKHK3wLY73-D1M2ItpHe88NHeB-Iq2M3lz7AQB7E +class CharmUsers(str, Enum): + """Enumeration of Valkey charm users.""" + + VALKEY_ADMIN = "charmed-operator" + VALKEY_SENTINEL = "charmed-sentinel-valkey" + VALKEY_REPLICA = "charmed-replication" + + # Sentinel users + SENTINEL_ADMIN = "charmed-sentinel-operator" + + +CHARM_USERS_ROLE_MAP = { + CharmUsers.VALKEY_ADMIN: "~* +@all", + CharmUsers.VALKEY_SENTINEL: "+client +config +info +publish +subscribe +monitor +ping +replicaof +failover +script|kill +multi +exec &__sentinel__:hello", + CharmUsers.VALKEY_REPLICA: "+psync +replconf +ping", + CharmUsers.SENTINEL_ADMIN: "~* +@all", +} diff --git a/src/managers/cluster.py b/src/managers/cluster.py index ccb2681..fd0057b 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -14,7 +14,7 @@ from common.exceptions import ValkeyACLLoadError from core.base_workload import WorkloadBase from core.cluster_state import ClusterState -from literals import INTERNAL_USER +from literals import CharmUsers from statuses import CharmStatuses logger = logging.getLogger(__name__) @@ -29,8 +29,10 @@ class ClusterManager(ManagerStatusProtocol): def __init__(self, state: ClusterState, workload: WorkloadBase): self.state = state self.workload = workload - self.admin_user = INTERNAL_USER - self.admin_password = self.state.cluster.internal_user_credentials.get(INTERNAL_USER, "") + self.admin_user = CharmUsers.VALKEY_ADMIN.value + self.admin_password = self.state.cluster.internal_user_credentials.get( + CharmUsers.VALKEY_ADMIN.value, "" + ) self.cluster_hostnames = [server.model.hostname for server in self.state.servers] def load_acl_file(self) -> None: diff --git a/src/managers/config.py b/src/managers/config.py index 32ae023..81710bd 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -16,7 +16,7 @@ from core.base_workload import WorkloadBase from core.cluster_state import ClusterState -from literals import ACL_FILE, CLIENT_PORT, INTERNAL_USER +from literals import ACL_FILE, CHARM_USERS_ROLE_MAP, CLIENT_PORT, CharmUsers from statuses import CharmStatuses logger = logging.getLogger(__name__) @@ -76,27 +76,41 @@ def set_config_properties(self) -> None: logger.debug("Writing configuration") self.workload.write_config_file(config=self.config_properties) - def set_acl_file(self, charmed_operator_password: str = "") -> None: + def set_acl_file(self, passwords: dict[str, str] | None = None) -> None: """Write the ACL file with appropriate user permissions. Args: - charmed_operator_password (str): Password for the charmed-operator user. If not provided, - the password from the cluster state will be used. + passwords (dict[str, str] | None): Optional dictionary of passwords to use. If not provided, + the passwords from the cluster state will be used. """ logger.debug("Writing ACL configuration") - if not charmed_operator_password: - charmed_operator_password = self.state.cluster.internal_user_credentials.get( - INTERNAL_USER, "" - ) - # sha256 hash the password - charmed_operator_password_hash = hashlib.sha256( - charmed_operator_password.encode("utf-8") - ).hexdigest() - # write the ACL file acl_content = "user default off\n" - acl_content += f"user {INTERNAL_USER} on #{charmed_operator_password_hash} ~* +@all\n" + for user in CharmUsers: + # only process VALKEY users + # Sentinel users should be in the sentinel acl file + if "VALKEY_" not in str(user): + continue + acl_content += self._get_user_acl_line(user, passwords=passwords) self.workload.write_file(acl_content, ACL_FILE) + def _get_user_acl_line(self, user: CharmUsers, passwords: dict[str, str] | None = None) -> str: + """Generate an ACL line for a given user. + + Args: + user (CharmUsers): User for which to generate the ACL line. + passwords (dict[str, str] | None): Optional dictionary of passwords to use. If not provided, + the passwords from the cluster state will be used. + + Returns: + str: ACL line for the user. + """ + passwords = passwords or self.state.cluster.internal_user_credentials + if not (password := passwords.get(user.value, "")): + raise ValueError(f"No password found for user {user}") + password_hash = hashlib.sha256(password.encode("utf-8")).hexdigest() + acl_line = f"user {user.value} on #{password_hash} {CHARM_USERS_ROLE_MAP[user]}\n" + return acl_line + def generate_password(self) -> str: """Create randomized string for use as app passwords. From 16153067a9bf238048c24d2d996ba0d095f1acc1 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 27 Jan 2026 07:12:44 +0000 Subject: [PATCH 019/282] update passwords on non leader units --- src/core/models.py | 17 +++++++++++------ src/events/base_events.py | 37 ++++++++++++++++++++++++++++++------- src/literals.py | 2 +- src/managers/cluster.py | 2 +- src/managers/config.py | 2 +- 5 files changed, 44 insertions(+), 16 deletions(-) diff --git a/src/core/models.py b/src/core/models.py index 5796359..fdf00a3 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -9,26 +9,31 @@ import ops from charms.data_platform_libs.v1.data_interfaces import ( - ExtraSecretStr, OpsOtherPeerUnitRepositoryInterface, OpsPeerRepositoryInterface, OpsPeerUnitRepositoryInterface, + OptionalSecretStr, PeerModel, ) from pydantic import Field +from typing_extensions import Annotated from literals import CharmUsers logger = logging.getLogger(__name__) +InternalUsersSecret = Annotated[ + OptionalSecretStr, Field(exclude=True, default=None), "internal_users_secret" +] + class PeerAppModel(PeerModel): """Model for the peer application data.""" - charmed_operator_password: ExtraSecretStr = Field(default="") - charmed_sentinel_valkey_password: ExtraSecretStr = Field(default="") - charmed_replication_password: ExtraSecretStr = Field(default="") - charmed_sentinel_operator_password: ExtraSecretStr = Field(default="") + charmed_operator_password: InternalUsersSecret = Field(default="") + charmed_sentinel_valkey_password: InternalUsersSecret = Field(default="") + charmed_replication_password: InternalUsersSecret = Field(default="") + charmed_sentinel_operator_password: InternalUsersSecret = Field(default="") class PeerUnitModel(PeerModel): @@ -130,7 +135,7 @@ def model(self) -> PeerAppModel | None: return self.data_interface.build_model(self.relation.id) if self.relation else None @property - def internal_user_credentials(self) -> dict[str, str]: + def internal_users_credentials(self) -> dict[str, str]: """Retrieve the credentials for the internal admin user.""" passwords = {} if not self.model: diff --git a/src/events/base_events.py b/src/events/base_events.py index 6500647..96ab857 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -11,7 +11,12 @@ import ops from common.exceptions import ValkeyClientError -from literals import INTERNAL_USERS_PASSWORD_CONFIG, PEER_RELATION, CharmUsers +from literals import ( + INTERNAL_USERS_PASSWORD_CONFIG, + INTERNAL_USERS_SECRET_LABEL, + PEER_RELATION, + CharmUsers, +) from statuses import CharmStatuses, ClusterStatuses if TYPE_CHECKING: @@ -51,7 +56,7 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: event.defer() return - if self.charm.unit.is_leader() and not self.charm.state.cluster.internal_user_credentials: + if self.charm.unit.is_leader() and not self.charm.state.cluster.internal_users_credentials: passwords = {} user_specified_passwords = {} if admin_secret_id := self.charm.config.get(INTERNAL_USERS_PASSWORD_CONFIG): @@ -106,16 +111,34 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: """Handle the secret_changed event.""" - # TODO For a multi-node cluster the units should independently update their passwords. - # If they fail the event should be deferred and retried. if not self.charm.unit.is_leader(): + if event.secret.label and event.secret.label.endswith(INTERNAL_USERS_SECRET_LABEL): + # leader unit processed the secret change from user, non-leader units can replicate + try: + self.charm.config_manager.set_acl_file() + self.charm.cluster_manager.load_acl_file() + except ValkeyClientError as e: + logger.error(e) + self.charm.status.set_running_status( + ClusterStatuses.PASSWORD_UPDATE_FAILED.value, + scope="app", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + event.defer() + return + self.charm.state.statuses.delete( + ClusterStatuses.PASSWORD_UPDATE_FAILED.value, + scope="app", + component=self.charm.cluster_manager.name, + ) return if admin_secret_id := self.charm.config.get(INTERNAL_USERS_PASSWORD_CONFIG): if admin_secret_id == event.secret.id: try: self._update_internal_users_password(str(admin_secret_id)) - except (ops.ModelError, ops.SecretNotFoundError): + except (ops.ModelError, ops.SecretNotFoundError, ValkeyClientError): event.defer() return @@ -144,7 +167,7 @@ def _update_internal_users_password(self, secret_id: str) -> None: ) # Check which passwords have changed - old_passwords = self.charm.state.cluster.internal_user_credentials + old_passwords = self.charm.state.cluster.internal_users_credentials passwords = {user.value: old_passwords.get(user.value, "") for user in CharmUsers} for user in CharmUsers: new_password = secret_content.get(user.value) @@ -186,7 +209,7 @@ def _update_internal_users_password(self, secret_id: str) -> None: component_name=self.charm.cluster_manager.name, statuses_state=self.charm.state.statuses, ) - return + raise self.charm.state.statuses.delete( ClusterStatuses.PASSWORD_UPDATE_FAILED.value, diff --git a/src/literals.py b/src/literals.py index 7918351..a2734d6 100644 --- a/src/literals.py +++ b/src/literals.py @@ -17,7 +17,7 @@ STATUS_PEERS_RELATION = "status-peers" INTERNAL_USERS_PASSWORD_CONFIG = "system-users" - +INTERNAL_USERS_SECRET_LABEL = "internal_users_secret" CLIENT_PORT = 6379 diff --git a/src/managers/cluster.py b/src/managers/cluster.py index fd0057b..e9671c7 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -30,7 +30,7 @@ def __init__(self, state: ClusterState, workload: WorkloadBase): self.state = state self.workload = workload self.admin_user = CharmUsers.VALKEY_ADMIN.value - self.admin_password = self.state.cluster.internal_user_credentials.get( + self.admin_password = self.state.cluster.internal_users_credentials.get( CharmUsers.VALKEY_ADMIN.value, "" ) self.cluster_hostnames = [server.model.hostname for server in self.state.servers] diff --git a/src/managers/config.py b/src/managers/config.py index 81710bd..eec35a8 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -104,7 +104,7 @@ def _get_user_acl_line(self, user: CharmUsers, passwords: dict[str, str] | None Returns: str: ACL line for the user. """ - passwords = passwords or self.state.cluster.internal_user_credentials + passwords = passwords or self.state.cluster.internal_users_credentials if not (password := passwords.get(user.value, "")): raise ValueError(f"No password found for user {user}") password_hash = hashlib.sha256(password.encode("utf-8")).hexdigest() From 7aa45059da44e56b0e7903e4a637c362772dcd34 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 27 Jan 2026 07:33:12 +0000 Subject: [PATCH 020/282] chagne scope of status for units and fix exception catching --- src/events/base_events.py | 16 ++++++++-------- src/statuses.py | 2 +- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 96ab857..68ca575 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -10,7 +10,7 @@ import ops -from common.exceptions import ValkeyClientError +from common.exceptions import ValkeyACLLoadError from literals import ( INTERNAL_USERS_PASSWORD_CONFIG, INTERNAL_USERS_SECRET_LABEL, @@ -117,11 +117,11 @@ def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: try: self.charm.config_manager.set_acl_file() self.charm.cluster_manager.load_acl_file() - except ValkeyClientError as e: + except ValkeyACLLoadError as e: logger.error(e) self.charm.status.set_running_status( ClusterStatuses.PASSWORD_UPDATE_FAILED.value, - scope="app", + scope="unit", component_name=self.charm.cluster_manager.name, statuses_state=self.charm.state.statuses, ) @@ -129,7 +129,7 @@ def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: return self.charm.state.statuses.delete( ClusterStatuses.PASSWORD_UPDATE_FAILED.value, - scope="app", + scope="unit", component=self.charm.cluster_manager.name, ) return @@ -138,7 +138,7 @@ def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: if admin_secret_id == event.secret.id: try: self._update_internal_users_password(str(admin_secret_id)) - except (ops.ModelError, ops.SecretNotFoundError, ValkeyClientError): + except (ops.ModelError, ops.SecretNotFoundError, ValkeyACLLoadError): event.defer() return @@ -201,11 +201,11 @@ def _update_internal_users_password(self, secret_id: str) -> None: for user in CharmUsers } ) - except ValkeyClientError as e: + except ValkeyACLLoadError as e: logger.error(e) self.charm.status.set_running_status( ClusterStatuses.PASSWORD_UPDATE_FAILED.value, - scope="app", + scope="unit", component_name=self.charm.cluster_manager.name, statuses_state=self.charm.state.statuses, ) @@ -213,6 +213,6 @@ def _update_internal_users_password(self, secret_id: str) -> None: self.charm.state.statuses.delete( ClusterStatuses.PASSWORD_UPDATE_FAILED.value, - scope="app", + scope="unit", component=self.charm.cluster_manager.name, ) diff --git a/src/statuses.py b/src/statuses.py index ba9234b..0f557a2 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -31,5 +31,5 @@ class ClusterStatuses(Enum): """Collection of possible cluster related statuses.""" PASSWORD_UPDATE_FAILED = StatusObject( - status="blocked", message="Failed to update the internal user's password", running="async" + status="blocked", message="Failed to update an internal user's password", running="async" ) From c63f21e9abf72a66c5a56ef4d07cbc4a522cd156 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 27 Jan 2026 10:21:09 +0000 Subject: [PATCH 021/282] fixing unit tests WIP --- tests/integration/k8s/helpers.py | 10 ++-- tests/integration/k8s/test_charm.py | 20 ++++---- tests/unit/test_charm.py | 74 ++++++++++++++++++----------- 3 files changed, 65 insertions(+), 39 deletions(-) diff --git a/tests/integration/k8s/helpers.py b/tests/integration/k8s/helpers.py index 98c2ba3..2b50ad2 100644 --- a/tests/integration/k8s/helpers.py +++ b/tests/integration/k8s/helpers.py @@ -14,7 +14,7 @@ from glide import GlideClient, GlideClientConfiguration, NodeAddress, ServerCredentials from ops import SecretNotFoundError, StatusBase -from literals import CLIENT_PORT, INTERNAL_USER, INTERNAL_USER_PASSWORD_CONFIG +from literals import CLIENT_PORT, INTERNAL_USERS_PASSWORD_CONFIG, CharmUsers logger = logging.getLogger(__name__) @@ -176,7 +176,9 @@ def get_secret_by_label(juju: jubilant.Juju, label: str) -> dict[str, str]: async def create_valkey_client( - hostnames: list[str], username: str | None = INTERNAL_USER, password: str | None = None + hostnames: list[str], + username: str | None = CharmUsers.VALKEY_ADMIN, + password: str | None = None, ): """Create and return a Valkey client connected to the cluster. @@ -203,7 +205,7 @@ async def create_valkey_client( def set_password( juju: jubilant.Juju, password: str, - username: str = INTERNAL_USER, + username: str = CharmUsers.VALKEY_ADMIN, application: str = APP_NAME, ) -> None: """Set a user password (or update it if existing) via secret. @@ -228,7 +230,7 @@ def set_password( juju.grant_secret(identifier=secret_id, app=application) # update the application config to include the secret - juju.config(app=application, values={INTERNAL_USER_PASSWORD_CONFIG: secret_id}) + juju.config(app=application, values={INTERNAL_USERS_PASSWORD_CONFIG: secret_id}) async def set_key( diff --git a/tests/integration/k8s/test_charm.py b/tests/integration/k8s/test_charm.py index 5104f76..66b9855 100644 --- a/tests/integration/k8s/test_charm.py +++ b/tests/integration/k8s/test_charm.py @@ -7,7 +7,11 @@ import jubilant import pytest -from literals import INTERNAL_USER, INTERNAL_USER_PASSWORD_CONFIG, PEER_RELATION +from literals import ( + INTERNAL_USERS_PASSWORD_CONFIG, + PEER_RELATION, + CharmUsers, +) from .helpers import ( APP_NAME, @@ -59,7 +63,7 @@ async def test_authentication(juju: jubilant.Juju) -> None: # Authenticate with internal user secret = get_secret_by_label(juju, label=f"{PEER_RELATION}.{APP_NAME}.app") - password = secret.get(f"{INTERNAL_USER}-password") + password = secret.get(f"{CharmUsers.VALKEY_ADMIN}-password") assert password is not None, "Admin password secret not found" client = await create_valkey_client(hostnames=hostnames, password=password) @@ -82,7 +86,7 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: # perform read operation with the updated password result = await set_key( hostnames=hostnames, - username=INTERNAL_USER, + username=CharmUsers.VALKEY_ADMIN, password=new_password, key=TEST_KEY, value=TEST_VALUE, @@ -90,14 +94,14 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: assert result == "OK", "Failed to write data after admin password update" # update the config again and remove the option `admin-password` - juju.config(app=APP_NAME, reset=[INTERNAL_USER_PASSWORD_CONFIG]) + juju.config(app=APP_NAME, reset=[INTERNAL_USERS_PASSWORD_CONFIG]) # wait for config-changed hook to finish executing juju.wait(lambda status: jubilant.all_agents_idle(status, APP_NAME), timeout=1200) # make sure we can still read data with the previously set password assert await get_key( - hostnames=hostnames, username=INTERNAL_USER, password=new_password, key=TEST_KEY + hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=new_password, key=TEST_KEY ) == bytes(TEST_VALUE, "utf-8") @@ -109,10 +113,10 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: logger.info("Creating new user secret") secret_name = "my_secret" new_password = "even-newer-password" - secret_id = juju.add_secret(name=secret_name, content={INTERNAL_USER: new_password}) + secret_id = juju.add_secret(name=secret_name, content={CharmUsers.VALKEY_ADMIN: new_password}) logger.info("Updating configuration with the new secret - but without access") - juju.config(app=APP_NAME, values={INTERNAL_USER_PASSWORD_CONFIG: secret_id}) + juju.config(app=APP_NAME, values={INTERNAL_USERS_PASSWORD_CONFIG: secret_id}) juju.wait( lambda status: does_status_match( @@ -142,7 +146,7 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: # perform read operation with the updated password assert await get_key( - hostnames=hostnames, username=INTERNAL_USER, password=new_password, key=TEST_KEY + hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=new_password, key=TEST_KEY ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data after secret permissions were updated" logger.info("Password update successful after secret was granted") diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 34b4d00..a1c61ae 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -5,16 +5,16 @@ from pathlib import Path from unittest.mock import patch -import pytest import yaml from ops import ActiveStatus, pebble, testing from src.charm import ValkeyCharm from src.literals import ( - INTERNAL_USER, - INTERNAL_USER_PASSWORD_CONFIG, + INTERNAL_USERS_PASSWORD_CONFIG, + INTERNAL_USERS_SECRET_LABEL, PEER_RELATION, STATUS_PEERS_RELATION, + CharmUsers, ) from src.statuses import CharmStatuses @@ -171,8 +171,10 @@ def test_internal_user_creation(): state_in = testing.State(relations={relation}, leader=True, containers={container}) with patch("workload_k8s.ValkeyK8sWorkload.write_file"): state_out = ctx.run(ctx.on.leader_elected(), state_in) - secret_out = state_out.get_secret(label=f"{PEER_RELATION}.{APP_NAME}.app") - assert secret_out.latest_content.get(f"{INTERNAL_USER}-password") + secret_out = state_out.get_secret( + label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL}" + ) + assert secret_out.latest_content.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") def test_leader_elected_no_peer_relation(): @@ -191,42 +193,57 @@ def test_leader_elected_leader_password_specified(): container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( - tracked_content={INTERNAL_USER: "secure-password"}, remote_grants=APP_NAME + tracked_content={CharmUsers.VALKEY_ADMIN.value: "secure-password"}, remote_grants=APP_NAME ) state_in = testing.State( leader=True, relations={relation}, containers={container}, secrets={password_secret}, - config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, ) with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), - patch("managers.config.ConfigManager.generate_password") as mock_generate, + patch( + "managers.config.ConfigManager.generate_password", return_value="generated-password" + ), ): state_out = ctx.run(ctx.on.leader_elected(), state_in) secret_out = state_out.get_secret(label=f"{PEER_RELATION}.{APP_NAME}.app") - assert secret_out.latest_content.get(f"{INTERNAL_USER}-password") == "secure-password" - mock_generate.assert_not_called() + assert ( + secret_out.latest_content.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") + == "secure-password" + ) + secret_out = state_out.get_secret(label=f"{PEER_RELATION}.{APP_NAME}.app") + for user in CharmUsers: + if user == CharmUsers.VALKEY_ADMIN: + assert secret_out.latest_content.get(f"{user.value}-password") == "secure-password" + continue + assert secret_out.latest_content.get(f"{user.value}-password") == "generated-password" def test_leader_elected_leader_password_specified_wrong_secret(): ctx = testing.Context(ValkeyCharm) relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + status_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) container = testing.Container(name=CONTAINER, can_connect=True) state_in = testing.State( leader=True, - relations={relation}, + relations={relation, status_relation}, containers={container}, - config={INTERNAL_USER_PASSWORD_CONFIG: "secret:1tf1wk0tmfrodp8ofwxn"}, + config={INTERNAL_USERS_PASSWORD_CONFIG: "secret:1tf1wk0tmfrodp8ofwxn"}, ) with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), - pytest.raises(testing.errors.UncaughtCharmError) as exc_info, + ctx(ctx.on.leader_elected(), state_in) as manager, ): - ctx.run(ctx.on.leader_elected(), state_in) - assert "SecretNotFoundError" in str(exc_info.value) + charm: ValkeyCharm = manager.charm + manager.run() + assert ( + charm.state.statuses.get(scope="app", component="cluster")[0] + == CharmStatuses.SECRET_ACCESS_ERROR.value + ) def test_config_changed_non_leader_unit(): @@ -234,7 +251,7 @@ def test_config_changed_non_leader_unit(): relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( - tracked_content={INTERNAL_USER: "secure-password"}, remote_grants=APP_NAME + tracked_content={CharmUsers.VALKEY_ADMIN.value: "secure-password"}, remote_grants=APP_NAME ) state_in = testing.State( @@ -242,7 +259,7 @@ def test_config_changed_non_leader_unit(): relations={relation}, containers={container}, secrets={password_secret}, - config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, ) with ( patch("events.base_events.BaseEvents.update_admin_password") as mock_update, @@ -257,14 +274,14 @@ def test_config_changed_leader_unit_valkey_update_fails(): container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( - tracked_content={INTERNAL_USER: "secure-password"}, remote_grants=APP_NAME + tracked_content={CharmUsers.VALKEY_ADMIN.value: "secure-password"}, remote_grants=APP_NAME ) state_in = testing.State( leader=True, relations={relation}, containers={container}, secrets={password_secret}, - config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, ) with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), @@ -281,14 +298,14 @@ def test_config_changed_leader_unit(): container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( - tracked_content={INTERNAL_USER: "secure-password"}, remote_grants=APP_NAME + tracked_content={CharmUsers.VALKEY_ADMIN.value: "secure-password"}, remote_grants=APP_NAME ) state_in = testing.State( leader=True, relations={relation}, containers={container}, secrets={password_secret}, - config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, ) with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), @@ -299,7 +316,10 @@ def test_config_changed_leader_unit(): mock_set_acl_file.assert_called_once() mock_load_acl.assert_called_once() secret_out = state_out.get_secret(label=f"{PEER_RELATION}.{APP_NAME}.app") - assert secret_out.latest_content.get(f"{INTERNAL_USER}-password") == "secure-password" + assert ( + secret_out.latest_content.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") + == "secure-password" + ) def test_config_changed_leader_unit_wrong_username(): @@ -315,7 +335,7 @@ def test_config_changed_leader_unit_wrong_username(): relations={relation}, containers={container}, secrets={password_secret}, - config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, ) with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), @@ -331,7 +351,7 @@ def test_change_password_secret_changed_non_leader_unit(): container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( - tracked_content={INTERNAL_USER: "secure-password"}, remote_grants=APP_NAME + tracked_content={CharmUsers.VALKEY_ADMIN.value: "secure-password"}, remote_grants=APP_NAME ) state_in = testing.State( @@ -339,7 +359,7 @@ def test_change_password_secret_changed_non_leader_unit(): relations={relation}, containers={container}, secrets={password_secret}, - config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, ) with ( patch("events.base_events.BaseEvents.update_admin_password") as mock_update_password, @@ -354,7 +374,7 @@ def test_change_password_secret_changed_leader_unit(): container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( - tracked_content={INTERNAL_USER: "secure-password"}, remote_grants=APP_NAME + tracked_content={CharmUsers.VALKEY_ADMIN.value: "secure-password"}, remote_grants=APP_NAME ) state_in = testing.State( @@ -362,7 +382,7 @@ def test_change_password_secret_changed_leader_unit(): relations={relation}, containers={container}, secrets={password_secret}, - config={INTERNAL_USER_PASSWORD_CONFIG: password_secret.id}, + config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, ) with ( patch("events.base_events.BaseEvents.update_admin_password") as mock_update_password, From d8e2754cc7e03b96a971ebc0cce1a65ad0e6fd4a Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 28 Jan 2026 06:00:41 +0000 Subject: [PATCH 022/282] small charm restructure and enahnce unit tests --- src/events/base_events.py | 25 +++++------ tests/unit/test_charm.py | 90 +++++++++++++++++++++++++++++++++------ 2 files changed, 89 insertions(+), 26 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 68ca575..a3bbd74 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -105,7 +105,7 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: if admin_secret_id := self.charm.config.get(INTERNAL_USERS_PASSWORD_CONFIG): try: self._update_internal_users_password(str(admin_secret_id)) - except (ops.ModelError, ops.SecretNotFoundError): + except (ops.ModelError, ops.SecretNotFoundError, ValkeyACLLoadError): event.defer() return @@ -116,7 +116,7 @@ def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: # leader unit processed the secret change from user, non-leader units can replicate try: self.charm.config_manager.set_acl_file() - self.charm.cluster_manager.load_acl_file() + self.charm.cluster_manager.reload_acl_file() except ValkeyACLLoadError as e: logger.error(e) self.charm.status.set_running_status( @@ -169,14 +169,6 @@ def _update_internal_users_password(self, secret_id: str) -> None: # Check which passwords have changed old_passwords = self.charm.state.cluster.internal_users_credentials passwords = {user.value: old_passwords.get(user.value, "") for user in CharmUsers} - for user in CharmUsers: - new_password = secret_content.get(user.value) - if not new_password: - continue - # only update user credentials if the password has changed - if new_password != passwords.get(user.value): - logger.debug(f"Password for user {user.value} has changed.") - passwords[user.value] = new_password # check if there are any users that are in the secret but not in the CharmUsers for key in secret_content.keys(): @@ -190,11 +182,20 @@ def _update_internal_users_password(self, secret_id: str) -> None: ) return + for user in CharmUsers: + new_password = secret_content.get(user.value) + if not new_password: + continue + # only update user credentials if the password has changed + if new_password != passwords.get(user.value): + logger.debug(f"Password for user {user.value} has changed.") + passwords[user.value] = new_password + # Update passwords if any have changed if passwords != old_passwords: try: self.charm.config_manager.set_acl_file(passwords=passwords) - self.charm.cluster_manager.load_acl_file() + self.charm.cluster_manager.reload_acl_file() self.charm.state.cluster.update( { f"{user.value.replace('-', '_')}_password": passwords[user.value] @@ -209,7 +210,7 @@ def _update_internal_users_password(self, secret_id: str) -> None: component_name=self.charm.cluster_manager.name, statuses_state=self.charm.state.statuses, ) - raise + raise e self.charm.state.statuses.delete( ClusterStatuses.PASSWORD_UPDATE_FAILED.value, diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index fca20e2..cb557fc 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -8,6 +8,7 @@ import yaml from ops import ActiveStatus, pebble, testing +from common.exceptions import ValkeyACLLoadError from src.charm import ValkeyCharm from src.literals import ( INTERNAL_USERS_PASSWORD_CONFIG, @@ -16,7 +17,7 @@ STATUS_PEERS_RELATION, CharmUsers, ) -from src.statuses import CharmStatuses +from src.statuses import CharmStatuses, ClusterStatuses from .helpers import status_is @@ -209,12 +210,9 @@ def test_leader_elected_leader_password_specified(): ), ): state_out = ctx.run(ctx.on.leader_elected(), state_in) - secret_out = state_out.get_secret(label=f"{PEER_RELATION}.{APP_NAME}.app") - assert ( - secret_out.latest_content.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") - == "secure-password" + secret_out = state_out.get_secret( + label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL}" ) - secret_out = state_out.get_secret(label=f"{PEER_RELATION}.{APP_NAME}.app") for user in CharmUsers: if user == CharmUsers.VALKEY_ADMIN: assert secret_out.latest_content.get(f"{user.value}-password") == "secure-password" @@ -262,7 +260,7 @@ def test_config_changed_non_leader_unit(): config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, ) with ( - patch("events.base_events.BaseEvents.update_admin_password") as mock_update, + patch("events.base_events.BaseEvents._update_internal_users_password") as mock_update, ): ctx.run(ctx.on.config_changed(), state_in) mock_update.assert_not_called() @@ -274,7 +272,8 @@ def test_config_changed_leader_unit_valkey_update_fails(): container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( - tracked_content={CharmUsers.VALKEY_ADMIN.value: "secure-password"}, remote_grants=APP_NAME + tracked_content={user.value: "secure-password" for user in CharmUsers}, + remote_grants=APP_NAME, ) state_in = testing.State( leader=True, @@ -315,7 +314,9 @@ def test_config_changed_leader_unit(): state_out = ctx.run(ctx.on.config_changed(), state_in) mock_set_acl_file.assert_called_once() mock_load_acl.assert_called_once() - secret_out = state_out.get_secret(label=f"{PEER_RELATION}.{APP_NAME}.app") + secret_out = state_out.get_secret( + label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL}" + ) assert ( secret_out.latest_content.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") == "secure-password" @@ -325,6 +326,7 @@ def test_config_changed_leader_unit(): def test_config_changed_leader_unit_wrong_username(): ctx = testing.Context(ValkeyCharm) relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + status_peer_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( @@ -332,7 +334,7 @@ def test_config_changed_leader_unit_wrong_username(): ) state_in = testing.State( leader=True, - relations={relation}, + relations={relation, status_peer_relation}, containers={container}, secrets={password_secret}, config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, @@ -340,8 +342,15 @@ def test_config_changed_leader_unit_wrong_username(): with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, + ctx(ctx.on.config_changed(), state_in) as manager, ): - ctx.run(ctx.on.config_changed(), state_in) + charm: ValkeyCharm = manager.charm + manager.run() + cluster_statuses = charm.state.statuses.get( + scope="app", + component=charm.cluster_manager.name, + ) + assert ClusterStatuses.PASSWORD_UPDATE_FAILED.value in cluster_statuses mock_set_acl_file.assert_not_called() @@ -351,7 +360,9 @@ def test_change_password_secret_changed_non_leader_unit(): container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( - tracked_content={CharmUsers.VALKEY_ADMIN.value: "secure-password"}, remote_grants=APP_NAME + label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL}", + tracked_content={CharmUsers.VALKEY_ADMIN.value: "secure-password"}, + remote_grants=APP_NAME, ) state_in = testing.State( @@ -362,10 +373,59 @@ def test_change_password_secret_changed_non_leader_unit(): config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, ) with ( - patch("events.base_events.BaseEvents.update_admin_password") as mock_update_password, + patch( + "events.base_events.BaseEvents._update_internal_users_password" + ) as mock_update_password, + patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, + patch("common.client.ValkeyClient.reload_acl") as mock_reload_acl, ): ctx.run(ctx.on.secret_changed(password_secret), state_in) mock_update_password.assert_not_called() + mock_set_acl_file.assert_called_once() + mock_reload_acl.assert_called_once() + + +def test_change_password_secret_changed_non_leader_unit_not_successful(): + ctx = testing.Context(ValkeyCharm) + relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + statuses_peer_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) + container = testing.Container(name=CONTAINER, can_connect=True) + + password_secret = testing.Secret( + label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL}", + tracked_content={CharmUsers.VALKEY_ADMIN.value: "secure-password"}, + remote_grants=APP_NAME, + ) + + state_in = testing.State( + leader=False, + relations={relation, statuses_peer_relation}, + containers={container}, + secrets={password_secret}, + config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, + ) + with ( + patch( + "events.base_events.BaseEvents._update_internal_users_password" + ) as mock_update_password, + patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, + patch( + "common.client.ValkeyClient.reload_acl", + side_effect=ValkeyACLLoadError("Reload failed"), + ) as mock_reload_acl, + ctx(ctx.on.secret_changed(password_secret), state_in) as manager, + ): + charm: ValkeyCharm = manager.charm + state_out = manager.run() + mock_update_password.assert_not_called() + mock_set_acl_file.assert_called_once() + mock_reload_acl.assert_called_once() + cluster_statuses = charm.state.statuses.get( + scope="unit", + component=charm.cluster_manager.name, + ) + assert "secret_changed" in [e.name for e in state_out.deferred] + assert ClusterStatuses.PASSWORD_UPDATE_FAILED.value in cluster_statuses def test_change_password_secret_changed_leader_unit(): @@ -385,7 +445,9 @@ def test_change_password_secret_changed_leader_unit(): config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, ) with ( - patch("events.base_events.BaseEvents.update_admin_password") as mock_update_password, + patch( + "events.base_events.BaseEvents._update_internal_users_password" + ) as mock_update_password, ): ctx.run(ctx.on.secret_changed(password_secret), state_in) mock_update_password.assert_called_once_with(password_secret.id) From fc9c9d30c6fd0a6c8f49b1e8463816ad0db4a525 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 28 Jan 2026 06:16:03 +0000 Subject: [PATCH 023/282] fix integration tests --- src/events/base_events.py | 6 ++++-- src/literals.py | 2 +- tests/integration/k8s/helpers.py | 13 +++++++++++-- tests/integration/k8s/test_charm.py | 29 ++++++++++++++++++++--------- 4 files changed, 36 insertions(+), 14 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index a3bbd74..10081fe 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -13,7 +13,7 @@ from common.exceptions import ValkeyACLLoadError from literals import ( INTERNAL_USERS_PASSWORD_CONFIG, - INTERNAL_USERS_SECRET_LABEL, + INTERNAL_USERS_SECRET_LABEL_SUFFIX, PEER_RELATION, CharmUsers, ) @@ -112,7 +112,9 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: """Handle the secret_changed event.""" if not self.charm.unit.is_leader(): - if event.secret.label and event.secret.label.endswith(INTERNAL_USERS_SECRET_LABEL): + if event.secret.label and event.secret.label.endswith( + INTERNAL_USERS_SECRET_LABEL_SUFFIX + ): # leader unit processed the secret change from user, non-leader units can replicate try: self.charm.config_manager.set_acl_file() diff --git a/src/literals.py b/src/literals.py index 77b658c..bc8d86b 100644 --- a/src/literals.py +++ b/src/literals.py @@ -18,7 +18,7 @@ STATUS_PEERS_RELATION = "status-peers" INTERNAL_USERS_PASSWORD_CONFIG = "system-users" -INTERNAL_USERS_SECRET_LABEL = "internal_users_secret" +INTERNAL_USERS_SECRET_LABEL_SUFFIX = "internal_users_secret" CLIENT_PORT = 6379 diff --git a/tests/integration/k8s/helpers.py b/tests/integration/k8s/helpers.py index 2b50ad2..43e8d50 100644 --- a/tests/integration/k8s/helpers.py +++ b/tests/integration/k8s/helpers.py @@ -14,7 +14,13 @@ from glide import GlideClient, GlideClientConfiguration, NodeAddress, ServerCredentials from ops import SecretNotFoundError, StatusBase -from literals import CLIENT_PORT, INTERNAL_USERS_PASSWORD_CONFIG, CharmUsers +from literals import ( + CLIENT_PORT, + INTERNAL_USERS_PASSWORD_CONFIG, + INTERNAL_USERS_SECRET_LABEL_SUFFIX, + PEER_RELATION, + CharmUsers, +) logger = logging.getLogger(__name__) @@ -22,6 +28,9 @@ METADATA = yaml.safe_load(Path("./metadata.yaml").read_text()) APP_NAME: str = METADATA["name"] IMAGE_RESOURCE = {"valkey-image": METADATA["resources"]["valkey-image"]["upstream-source"]} +INTERNAL_USERS_SECRET_LABEL = ( + f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" +) class CharmStatuses(Enum): @@ -205,7 +214,7 @@ async def create_valkey_client( def set_password( juju: jubilant.Juju, password: str, - username: str = CharmUsers.VALKEY_ADMIN, + username: str = CharmUsers.VALKEY_ADMIN.value, application: str = APP_NAME, ) -> None: """Set a user password (or update it if existing) via secret. diff --git a/tests/integration/k8s/test_charm.py b/tests/integration/k8s/test_charm.py index 66b9855..10eebbc 100644 --- a/tests/integration/k8s/test_charm.py +++ b/tests/integration/k8s/test_charm.py @@ -9,13 +9,13 @@ from literals import ( INTERNAL_USERS_PASSWORD_CONFIG, - PEER_RELATION, CharmUsers, ) from .helpers import ( APP_NAME, IMAGE_RESOURCE, + INTERNAL_USERS_SECRET_LABEL, CharmStatuses, create_valkey_client, does_status_match, @@ -62,8 +62,8 @@ async def test_authentication(juju: jubilant.Juju) -> None: assert "NOAUTH" in str(exc_info.value), "Unauthenticated access did not fail as expected" # Authenticate with internal user - secret = get_secret_by_label(juju, label=f"{PEER_RELATION}.{APP_NAME}.app") - password = secret.get(f"{CharmUsers.VALKEY_ADMIN}-password") + secret = get_secret_by_label(juju, label=INTERNAL_USERS_SECRET_LABEL) + password = secret.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") assert password is not None, "Admin password secret not found" client = await create_valkey_client(hostnames=hostnames, password=password) @@ -86,7 +86,7 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: # perform read operation with the updated password result = await set_key( hostnames=hostnames, - username=CharmUsers.VALKEY_ADMIN, + username=CharmUsers.VALKEY_ADMIN.value, password=new_password, key=TEST_KEY, value=TEST_VALUE, @@ -101,7 +101,10 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: # make sure we can still read data with the previously set password assert await get_key( - hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=new_password, key=TEST_KEY + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=new_password, + key=TEST_KEY, ) == bytes(TEST_VALUE, "utf-8") @@ -111,9 +114,11 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: hostnames = get_cluster_hostnames(juju, APP_NAME) logger.info("Creating new user secret") - secret_name = "my_secret" + secret_name = "my_secret_2" new_password = "even-newer-password" - secret_id = juju.add_secret(name=secret_name, content={CharmUsers.VALKEY_ADMIN: new_password}) + secret_id = juju.add_secret( + name=secret_name, content={CharmUsers.VALKEY_ADMIN.value: new_password} + ) logger.info("Updating configuration with the new secret - but without access") juju.config(app=APP_NAME, values={INTERNAL_USERS_PASSWORD_CONFIG: secret_id}) @@ -130,7 +135,7 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: # deferred `config_changed` event will be retried before `update_status` with fast_forward(juju): juju.grant_secret(identifier=secret_name, app=APP_NAME) - sleep(10) # allow some time for the permission to propagate + sleep(20) # allow some time for the permission to propagate # juju.wait( # lambda status: jubilant.all_active(status, APP_NAME), @@ -146,7 +151,13 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: # perform read operation with the updated password assert await get_key( - hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=new_password, key=TEST_KEY + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=new_password, + key=TEST_KEY, ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data after secret permissions were updated" logger.info("Password update successful after secret was granted") + + +# TODO Once scaling is implemented, add tests to check on password update in non-leader units From 3bc87743377521cd74ac275d80f932d2f26beb2d Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 28 Jan 2026 06:22:39 +0000 Subject: [PATCH 024/282] add wrong username update test --- src/events/base_events.py | 5 +++++ tests/integration/k8s/test_charm.py | 34 +++++++++++++++++++++++++++++ 2 files changed, 39 insertions(+) diff --git a/src/events/base_events.py b/src/events/base_events.py index 10081fe..d316d12 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -219,3 +219,8 @@ def _update_internal_users_password(self, secret_id: str) -> None: scope="unit", component=self.charm.cluster_manager.name, ) + self.charm.state.statuses.delete( + ClusterStatuses.PASSWORD_UPDATE_FAILED.value, + scope="app", + component=self.charm.cluster_manager.name, + ) diff --git a/tests/integration/k8s/test_charm.py b/tests/integration/k8s/test_charm.py index 10eebbc..ee9ce21 100644 --- a/tests/integration/k8s/test_charm.py +++ b/tests/integration/k8s/test_charm.py @@ -11,6 +11,7 @@ INTERNAL_USERS_PASSWORD_CONFIG, CharmUsers, ) +from statuses import ClusterStatuses from .helpers import ( APP_NAME, @@ -108,6 +109,39 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: ) == bytes(TEST_VALUE, "utf-8") +@pytest.mark.abort_on_fail +async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None: + """Assert the admin password is updated when adding a user secret to the config.""" + hostnames = get_cluster_hostnames(juju, APP_NAME) + + # create a user secret and grant it to the application + new_password = "some-password" + set_password(juju, username="wrong-username", password=new_password) + + # wait for config-changed hook to finish executing + juju.wait( + lambda status: does_status_match( + status, + expected_app_statuses={APP_NAME: [ClusterStatuses.PASSWORD_UPDATE_FAILED.value]}, + ), + timeout=1200, + ) + + set_password(juju, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) + # wait for config-changed hook to finish executing + juju.wait(lambda status: jubilant.all_agents_idle(status, APP_NAME), timeout=1200) + + # perform read operation with the updated password + result = await set_key( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=new_password, + key=TEST_KEY, + value=TEST_VALUE, + ) + assert result == "OK", "Failed to write data after admin password update" + + @pytest.mark.abort_on_fail async def test_user_secret_permissions(juju: jubilant.Juju) -> None: """If a user secret is not granted, ensure we can process updated permissions.""" From b8128477310b28b7a2536f85d5748cb2504c80b3 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 28 Jan 2026 06:28:58 +0000 Subject: [PATCH 025/282] fix copilot feedback --- src/literals.py | 1 - tests/integration/k8s/helpers.py | 2 +- 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/src/literals.py b/src/literals.py index bc8d86b..1276be8 100644 --- a/src/literals.py +++ b/src/literals.py @@ -12,7 +12,6 @@ CONFIG_FILE = "/var/lib/valkey/valkey.conf" ACL_FILE = "/var/lib/valkey/users.acl" -ACL_FILE = "/var/lib/valkey/users.acl" PEER_RELATION = "valkey-peers" STATUS_PEERS_RELATION = "status-peers" diff --git a/tests/integration/k8s/helpers.py b/tests/integration/k8s/helpers.py index 43e8d50..56a24b0 100644 --- a/tests/integration/k8s/helpers.py +++ b/tests/integration/k8s/helpers.py @@ -186,7 +186,7 @@ def get_secret_by_label(juju: jubilant.Juju, label: str) -> dict[str, str]: async def create_valkey_client( hostnames: list[str], - username: str | None = CharmUsers.VALKEY_ADMIN, + username: str | None = CharmUsers.VALKEY_ADMIN.value, password: str | None = None, ): """Create and return a Valkey client connected to the cluster. From 913f85f46fd7a1cf938f453691c6012b61bdc2ad Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 28 Jan 2026 06:40:16 +0000 Subject: [PATCH 026/282] fix unit tests --- tests/unit/test_charm.py | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index cb557fc..2063efe 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -12,7 +12,7 @@ from src.charm import ValkeyCharm from src.literals import ( INTERNAL_USERS_PASSWORD_CONFIG, - INTERNAL_USERS_SECRET_LABEL, + INTERNAL_USERS_SECRET_LABEL_SUFFIX, PEER_RELATION, STATUS_PEERS_RELATION, CharmUsers, @@ -173,7 +173,7 @@ def test_internal_user_creation(): with patch("workload_k8s.ValkeyK8sWorkload.write_file"): state_out = ctx.run(ctx.on.leader_elected(), state_in) secret_out = state_out.get_secret( - label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL}" + label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" ) assert secret_out.latest_content.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") @@ -211,7 +211,7 @@ def test_leader_elected_leader_password_specified(): ): state_out = ctx.run(ctx.on.leader_elected(), state_in) secret_out = state_out.get_secret( - label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL}" + label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" ) for user in CharmUsers: if user == CharmUsers.VALKEY_ADMIN: @@ -315,7 +315,7 @@ def test_config_changed_leader_unit(): mock_set_acl_file.assert_called_once() mock_load_acl.assert_called_once() secret_out = state_out.get_secret( - label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL}" + label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" ) assert ( secret_out.latest_content.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") @@ -360,7 +360,7 @@ def test_change_password_secret_changed_non_leader_unit(): container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( - label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL}", + label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}", tracked_content={CharmUsers.VALKEY_ADMIN.value: "secure-password"}, remote_grants=APP_NAME, ) @@ -392,7 +392,7 @@ def test_change_password_secret_changed_non_leader_unit_not_successful(): container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( - label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL}", + label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}", tracked_content={CharmUsers.VALKEY_ADMIN.value: "secure-password"}, remote_grants=APP_NAME, ) From 073f087b39ebe6508fec067e9722d8a29bdf0615 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 28 Jan 2026 13:49:54 +0000 Subject: [PATCH 027/282] add charm sentinel user --- src/core/models.py | 1 + src/literals.py | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/src/core/models.py b/src/core/models.py index fdf00a3..66bebf5 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -33,6 +33,7 @@ class PeerAppModel(PeerModel): charmed_operator_password: InternalUsersSecret = Field(default="") charmed_sentinel_valkey_password: InternalUsersSecret = Field(default="") charmed_replication_password: InternalUsersSecret = Field(default="") + charmed_sentinel_peers_password: InternalUsersSecret = Field(default="") charmed_sentinel_operator_password: InternalUsersSecret = Field(default="") diff --git a/src/literals.py b/src/literals.py index 1276be8..c541698 100644 --- a/src/literals.py +++ b/src/literals.py @@ -31,7 +31,8 @@ class CharmUsers(str, Enum): VALKEY_REPLICA = "charmed-replication" # Sentinel users - SENTINEL_ADMIN = "charmed-sentinel-operator" + SENTINEL_ADMIN = "charmed-sentinel-peers" + SENTINEL_CHARM_ADMIN = "charmed-sentinel-operator" CHARM_USERS_ROLE_MAP = { @@ -39,4 +40,5 @@ class CharmUsers(str, Enum): CharmUsers.VALKEY_SENTINEL: "+client +config +info +publish +subscribe +monitor +ping +replicaof +failover +script|kill +multi +exec &__sentinel__:hello", CharmUsers.VALKEY_REPLICA: "+psync +replconf +ping", CharmUsers.SENTINEL_ADMIN: "~* +@all", + CharmUsers.SENTINEL_CHARM_ADMIN: "~* +@all", } From f6a84891396522bc2fa0d133d3e2a48ba1c6804f Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 29 Jan 2026 05:33:35 +0000 Subject: [PATCH 028/282] initial scale up implementation --- src/charm.py | 19 +- src/core/base_workload.py | 39 ++- src/core/models.py | 18 +- src/events/base_events.py | 45 ++- src/literals.py | 9 + src/managers/config-template/sentinel.conf | 361 +++++++++++++++++++++ src/managers/config.py | 76 ++++- src/workload_k8s.py | 40 ++- 8 files changed, 581 insertions(+), 26 deletions(-) create mode 100644 src/managers/config-template/sentinel.conf diff --git a/src/charm.py b/src/charm.py index 466527f..a1740df 100755 --- a/src/charm.py +++ b/src/charm.py @@ -11,7 +11,7 @@ from core.cluster_state import ClusterState from events.base_events import BaseEvents -from literals import CONTAINER +from literals import CHARM_USER, CONTAINER, DATA_DIR from managers.cluster import ClusterManager from managers.config import ConfigManager from workload_k8s import ValkeyK8sWorkload @@ -41,21 +41,28 @@ def __init__(self, *args) -> None: # --- EVENT HANDLERS --- self.base_events = BaseEvents(self) - # --- Observers - self.framework.observe(self.on.valkey_pebble_ready, self._on_pebble_ready) + # --- Observers --- + self.framework.observe(self.on.start, self._on_ready) - def _on_pebble_ready(self, event: ops.PebbleReadyEvent) -> None: + def _on_ready(self, event: ops.StartEvent) -> None: """Handle the `pebble-ready` event.""" if not self.workload.can_connect: logger.warning("Container not ready yet") event.defer() return - if not self.unit.is_leader(): - logger.warning("Scaling not implemented yet, services not started") + if not self.unit.is_leader() and ( + not self.state.cluster.internal_user_credentials + or not self.state.cluster.model.primary_ip + ): + logger.info("Deferring leader write primary and internal user credentials") + event.defer() return self.config_manager.set_config_properties() + self.config_manager.set_acl_file() + self.config_manager.set_sentinel_config() + self.workload.mkdir(DATA_DIR, user=CHARM_USER, group=CHARM_USER) self.workload.start() logger.info("Services started") self.state.unit_server.update({"started": True}) diff --git a/src/core/base_workload.py b/src/core/base_workload.py index bed9210..2206c0a 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -4,8 +4,13 @@ """Base objects for workload operations across different substrates.""" +import logging +import socket +import subprocess from abc import ABC, abstractmethod +logger = logging.getLogger(__name__) + class WorkloadBase(ABC): """Base interface for common workload operations.""" @@ -31,11 +36,43 @@ def write_config_file(self, config: dict[str, str]) -> None: pass @abstractmethod - def write_file(self, content: str, path: str) -> None: + def write_file( + self, + content: str, + path: str, + mode: int | None = None, + user: str | None = None, + group: str | None = None, + ) -> None: """Write content to a file on disk. + Note: + mode, user, and group are optional parameters used only on k8s workloads. + Args: content (str): The content to be written. path (str): The file path where the content should be written. + mode (int, optional): The file mode (permissions). Defaults to None. + user (str, optional): The user name. Defaults to None. + group (str, optional): The group name. Defaults to None. """ pass + + def get_private_ip(self) -> str: + """Get the Private IP address of the current unit.""" + cmd = "unit-get private-address" + try: + output = subprocess.run( + cmd, + check=True, + text=True, + shell=True, + capture_output=True, + timeout=10, + ) + if output.returncode == 0: + return output.stdout.strip() + except (subprocess.CalledProcessError, subprocess.TimeoutExpired) as e: + logger.error(f"Error executing command '{cmd}': {e}") + + return socket.gethostbyname(socket.gethostname()) diff --git a/src/core/models.py b/src/core/models.py index de27f03..d8555fc 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -17,7 +17,7 @@ ) from pydantic import Field -from literals import INTERNAL_USER +from literals import INTERNAL_USER, SENTINEL_USER logger = logging.getLogger(__name__) @@ -26,6 +26,8 @@ class PeerAppModel(PeerModel): """Model for the peer application data.""" charmed_operator_password: ExtraSecretStr = Field(default="") + charmed_replication_password: ExtraSecretStr = Field(default="") + primary_ip: str = Field(default="") class PeerUnitModel(PeerModel): @@ -33,6 +35,7 @@ class PeerUnitModel(PeerModel): started: bool = Field(default=False) hostname: str = Field(default="") + private_ip: str = Field(default="") class RelationState: @@ -129,7 +132,14 @@ def model(self) -> PeerAppModel | None: @property def internal_user_credentials(self) -> dict[str, str]: """Retrieve the credentials for the internal admin user.""" - if self.model and (password := self.model.charmed_operator_password): - return {INTERNAL_USER: password} + creds = {} - return {} + if not self.model: + return creds + + if self.model.charmed_operator_password: + creds[INTERNAL_USER] = self.model.charmed_operator_password + if self.model.charmed_replication_password: + creds[SENTINEL_USER] = self.model.charmed_replication_password + + return creds diff --git a/src/events/base_events.py b/src/events/base_events.py index 0125411..49b96ee 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -11,7 +11,7 @@ import ops from common.exceptions import ValkeyUserManagementError -from literals import INTERNAL_USER, INTERNAL_USER_PASSWORD_CONFIG, PEER_RELATION +from literals import INTERNAL_USER, INTERNAL_USER_PASSWORD_CONFIG, PEER_RELATION, SENTINEL_USER from statuses import CharmStatuses, ClusterStatuses if TYPE_CHECKING: @@ -50,25 +50,52 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: if not self.charm.state.peer_relation: event.defer() return + self.charm.state.unit_server.update( + { + "hostname": socket.gethostname(), + "private_ip": self.charm.workload.get_private_ip(), + } + ) + if not self.charm.state.cluster.model.primary_ip and self.charm.unit.is_leader(): + # set the primary to this unit if not already set + self.charm.state.cluster.update( + { + "primary_ip": self.charm.state.unit_server.model.private_ip, + } + ) if self.charm.unit.is_leader() and not self.charm.state.cluster.internal_user_credentials: + charmed_operator_password = "" + charmed_replication_password = "" if admin_secret_id := self.charm.config.get(INTERNAL_USER_PASSWORD_CONFIG): try: - password = self.charm.state.get_secret_from_id(str(admin_secret_id)).get( - INTERNAL_USER - ) + admin_secret = self.charm.state.get_secret_from_id(str(admin_secret_id)) + charmed_operator_password = admin_secret.get(INTERNAL_USER) + charmed_replication_password = admin_secret.get(SENTINEL_USER) except (ops.ModelError, ops.SecretNotFoundError) as e: logger.error(f"Could not access secret {admin_secret_id}: {e}") raise - else: - password = self.charm.config_manager.generate_password() - self.charm.state.cluster.update({"charmed_operator_password": password}) - self.charm.config_manager.set_acl_file() + if not charmed_operator_password: + charmed_operator_password = self.charm.config_manager.generate_password() + if not charmed_replication_password: + charmed_replication_password = self.charm.config_manager.generate_password() + + self.charm.state.cluster.update( + { + "charmed_operator_password": charmed_operator_password, + "charmed_replication_password": charmed_replication_password, + } + ) def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: """Handle the config_changed event.""" - self.charm.state.unit_server.update({"hostname": socket.gethostname()}) + self.charm.state.unit_server.update( + { + "hostname": socket.gethostname(), + "private_ip": self.charm.workload.get_private_ip(), + } + ) if not self.charm.unit.is_leader(): return diff --git a/src/literals.py b/src/literals.py index 61e0f04..3af238c 100644 --- a/src/literals.py +++ b/src/literals.py @@ -9,12 +9,21 @@ CONTAINER = "valkey" CONFIG_FILE = "/var/lib/valkey/valkey.conf" +VALKEY_LOG_FILE = "/var/lib/valkey/valkey.log" +SENTINEL_LOG_FILE = "/var/lib/valkey/sentinel.log" ACL_FILE = "/var/lib/valkey/users.acl" +SENTINEL_CONFIG_FILE = "/var/lib/valkey/sentinel.conf" +DATA_DIR = "/var/lib/valkey/data" PEER_RELATION = "valkey-peers" STATUS_PEERS_RELATION = "status-peers" INTERNAL_USER = "charmed-operator" +SENTINEL_USER = "charmed-replication" INTERNAL_USER_PASSWORD_CONFIG = "system-users" CLIENT_PORT = 6379 +SENTINEL_PORT = 26379 + +PRIMARY_NAME = "primary" +QUORUM_NUMBER = 2 diff --git a/src/managers/config-template/sentinel.conf b/src/managers/config-template/sentinel.conf new file mode 100644 index 0000000..abd5c60 --- /dev/null +++ b/src/managers/config-template/sentinel.conf @@ -0,0 +1,361 @@ +# Example sentinel.conf + +# By default protected mode is disabled in sentinel mode. Sentinel is reachable +# from interfaces different than localhost. Make sure the sentinel instance is +# protected from the outside world via firewalling or other means. +protected-mode no + +# port +# The port that this sentinel instance will run on +port 26379 + +# By default Valkey Sentinel does not run as a daemon. Use 'yes' if you need it. +# Note that Valkey will write a pid file in /var/run/valkey-sentinel.pid when +# daemonized. +daemonize no + +# When running daemonized, Valkey Sentinel writes a pid file in +# /var/run/valkey-sentinel.pid by default. You can specify a custom pid file +# location here. +pidfile /var/run/valkey-sentinel.pid + +# Specify the server verbosity level. +# This can be one of: +# debug (a lot of information, useful for development/testing) +# verbose (many rarely useful info, but not a mess like the debug level) +# notice (moderately verbose, what you want in production probably) +# warning (only very important / critical messages are logged) +# nothing (nothing is logged) +loglevel notice + +# Specify the log file name. Also the empty string can be used to force +# Sentinel to log on the standard output. Note that if you use standard +# output for logging but daemonize, logs will be sent to /dev/null +logfile "" + +# To enable logging to the system logger, just set 'syslog-enabled' to yes, +# and optionally update the other syslog parameters to suit your needs. +# syslog-enabled no + +# Specify the syslog identity. +# syslog-ident sentinel + +# Specify the syslog facility. Must be USER or between LOCAL0-LOCAL7. +# syslog-facility local0 + +# sentinel announce-ip +# sentinel announce-port +# +# The above two configuration directives are useful in environments where, +# because of NAT, Sentinel is reachable from outside via a non-local address. +# +# When announce-ip is provided, the Sentinel will claim the specified IP address +# in HELLO messages used to gossip its presence, instead of auto-detecting the +# local address as it usually does. +# +# Similarly when announce-port is provided and is valid and non-zero, Sentinel +# will announce the specified TCP port. +# +# The two options don't need to be used together, if only announce-ip is +# provided, the Sentinel will announce the specified IP and the server port +# as specified by the "port" option. If only announce-port is provided, the +# Sentinel will announce the auto-detected local IP and the specified port. +# +# Example: +# +# sentinel announce-ip 1.2.3.4 + +# dir +# Every long running process should have a well-defined working directory. +# For Valkey Sentinel to chdir to /tmp at startup is the simplest thing +# for the process to don't interfere with administrative tasks such as +# unmounting filesystems. +dir /tmp + +# sentinel monitor +# +# Tells Sentinel to monitor this master, and to consider it in O_DOWN +# (Objectively Down) state only if at least sentinels agree. +# +# Note that whatever is the ODOWN quorum, a Sentinel will require to +# be elected by the majority of the known Sentinels in order to +# start a failover, so no failover can be performed in minority. +# +# Replicas are auto-discovered, so you don't need to specify replicas in +# any way. Sentinel itself will rewrite this configuration file adding +# the replicas using additional configuration options. +# Also note that the configuration file is rewritten when a +# replica is promoted to master. +# +# Note: master name should not include special characters or spaces. +# The valid charset is A-z 0-9 and the three characters ".-_". +sentinel monitor mymaster 127.0.0.1 6379 2 + +# sentinel auth-pass +# +# Set the password to use to authenticate with the master and replicas. +# Useful if there is a password set in the Valkey instances to monitor. +# +# Note that the master password is also used for replicas, so it is not +# possible to set a different password in masters and replicas instances +# if you want to be able to monitor these instances with Sentinel. +# +# However you can have Valkey instances without the authentication enabled +# mixed with Valkey instances requiring the authentication (as long as the +# password set is the same for all the instances requiring the password) as +# the AUTH command will have no effect in Valkey instances with authentication +# switched off. +# +# Example: +# +# sentinel auth-pass mymaster MySUPER--secret-0123passw0rd + +# sentinel auth-user +# +# This is useful in order to authenticate to instances having ACL capabilities, +# that is, running Valkey. When just auth-pass is provided the +# Sentinel instance will authenticate to Valkey using the old "AUTH " +# method. When also an username is provided, it will use "AUTH ". +# In the Valkey servers side, the ACL to provide just minimal access to +# Sentinel instances, should be configured along the following lines: +# +# user sentinel-user >somepassword +subscribe +publish +failover +script|kill \ +# +ping +info +multi +slaveof +config +client +exec &__sentinel__:hello on +# +# Since Valkey Sentinel 9.0, the sentinel user requires the +failover permission +# on all monitored Valkey instances for proper operation. + +# sentinel down-after-milliseconds +# +# Number of milliseconds the master (or any attached replica or sentinel) should +# be unreachable (as in, not acceptable reply to PING, continuously, for the +# specified period) in order to consider it in S_DOWN state (Subjectively +# Down). +# +# Default is 30 seconds. +sentinel down-after-milliseconds mymaster 30000 + + +# Sentinel's ACL users are defined in the following format: +# +# user ... acl rules ... +# +# For example: +# +# user worker +@admin +@connection ~* on >ffa9203c493aa99 +# +# For more information about ACL configuration please refer to the Valkey +# website at https://valkey.io/topics/acl and valkey server configuration +# template valkey.conf. + +# ACL LOG +# +# The ACL Log tracks failed commands and authentication events associated +# with ACLs. The ACL Log is useful to troubleshoot failed commands blocked +# by ACLs. The ACL Log is stored in memory. You can reclaim memory with +# ACL LOG RESET. Define the maximum entry length of the ACL Log below. +acllog-max-len 128 + +# Using an external ACL file +# +# Instead of configuring users here in this file, it is possible to use +# a stand-alone file just listing users. The two methods cannot be mixed: +# if you configure users here and at the same time you activate the external +# ACL file, the server will refuse to start. +# +# The format of the external ACL user file is exactly the same as the +# format that is used inside valkey.conf to describe users. +# +# aclfile /etc/valkey/sentinel-users.acl + +# requirepass +# +# You can configure Sentinel itself to require a password, however when doing +# so Sentinel will try to authenticate with the same password to all the +# other Sentinels. So you need to configure all your Sentinels in a given +# group with the same "requirepass" password. Check the following documentation +# for more info: https://valkey.io/topics/sentinel +# +# IMPORTANT NOTE: "requirepass" is a compatibility +# layer on top of the ACL system. The option effect will be just setting +# the password for the default user. Clients will still authenticate using +# AUTH as usually, or more explicitly with AUTH default +# if they follow the new protocol: both will work. +# +# New config files are advised to use separate authentication control for +# incoming connections (via ACL), and for outgoing connections (via +# sentinel-user and sentinel-pass) +# +# The requirepass is not compatible with aclfile option and the ACL LOAD +# command, these will cause requirepass to be ignored. + +# sentinel sentinel-user +# +# You can configure Sentinel to authenticate with other Sentinels with specific +# user name. + +# sentinel sentinel-pass +# +# The password for Sentinel to authenticate with other Sentinels. If sentinel-user +# is not configured, Sentinel will use 'default' user with sentinel-pass to authenticate. + +# sentinel parallel-syncs +# +# How many replicas we can reconfigure to point to the new replica simultaneously +# during the failover. Use a low number if you use the replicas to serve query +# to avoid that all the replicas will be unreachable at about the same +# time while performing the synchronization with the master. +sentinel parallel-syncs mymaster 1 + +# sentinel failover-timeout +# +# Specifies the failover timeout in milliseconds. It is used in many ways: +# +# - The time needed to re-start a failover after a previous failover was +# already tried against the same master by a given Sentinel, is two +# times the failover timeout. +# +# - The time needed for a replica replicating to a wrong master according +# to a Sentinel current configuration, to be forced to replicate +# with the right master, is exactly the failover timeout (counting since +# the moment a Sentinel detected the misconfiguration). +# +# - The time needed to cancel a failover that is already in progress but +# did not produced any configuration change (SLAVEOF NO ONE yet not +# acknowledged by the promoted replica). +# +# - The maximum time a failover in progress waits for all the replicas to be +# reconfigured as replicas of the new master. However even after this time +# the replicas will be reconfigured by the Sentinels anyway, but not with +# the exact parallel-syncs progression as specified. +# +# Default is 3 minutes. +sentinel failover-timeout mymaster 180000 + +# SCRIPTS EXECUTION +# +# sentinel notification-script and sentinel reconfig-script are used in order +# to configure scripts that are called to notify the system administrator +# or to reconfigure clients after a failover. The scripts are executed +# with the following rules for error handling: +# +# If script exits with "1" the execution is retried later (up to a maximum +# number of times currently set to 10). +# +# If script exits with "2" (or an higher value) the script execution is +# not retried. +# +# If script terminates because it receives a signal the behavior is the same +# as exit code 1. +# +# A script has a maximum running time of 60 seconds. After this limit is +# reached the script is terminated with a SIGKILL and the execution retried. + +# NOTIFICATION SCRIPT +# +# sentinel notification-script +# +# Call the specified notification script for any sentinel event that is +# generated in the WARNING level (for instance -sdown, -odown, and so forth). +# This script should notify the system administrator via email, SMS, or any +# other messaging system, that there is something wrong with the monitored +# Valkey systems. +# +# The script is called with just two arguments: the first is the event type +# and the second the event description. +# +# The script must exist and be executable in order for sentinel to start if +# this option is provided. +# +# Example: +# +# sentinel notification-script mymaster /var/valkey/notify.sh + +# CLIENTS RECONFIGURATION SCRIPT +# +# sentinel client-reconfig-script +# +# When the master changed because of a failover a script can be called in +# order to perform application-specific tasks to notify the clients that the +# configuration has changed and the master is at a different address. +# +# The following arguments are passed to the script: +# +# +# +# is currently always "start" +# is either "leader" or "observer" +# +# The arguments from-ip, from-port, to-ip, to-port are used to communicate +# the old address of the master and the new address of the elected replica +# (now a master). +# +# This script should be resistant to multiple invocations. +# +# Example: +# +# sentinel client-reconfig-script mymaster /var/valkey/reconfig.sh + +# SECURITY +# +# By default SENTINEL SET will not be able to change the notification-script +# and client-reconfig-script at runtime. This avoids a trivial security issue +# where clients can set the script to anything and trigger a failover in order +# to get the program executed. + +sentinel deny-scripts-reconfig yes + +# VALKEY COMMANDS RENAMING (DEPRECATED) +# +# WARNING: avoid using this option if possible, instead use ACLs. +# +# Sometimes the Valkey server has certain commands, that are needed for Sentinel +# to work correctly, renamed to unguessable strings. This is often the case +# of CONFIG and SLAVEOF in the context of providers that provide Valkey as +# a service, and don't want the customers to reconfigure the instances outside +# of the administration console. +# +# In such case it is possible to tell Sentinel to use different command names +# instead of the normal ones. For example if the master "mymaster", and the +# associated replicas, have "CONFIG" all renamed to "GUESSME", I could use: +# +# SENTINEL rename-command mymaster CONFIG GUESSME +# +# After such configuration is set, every time Sentinel would use CONFIG it will +# use GUESSME instead. Note that there is no actual need to respect the command +# case, so writing "config guessme" is the same in the example above. +# +# SENTINEL SET can also be used in order to perform this configuration at runtime. +# +# In order to set a command back to its original name (undo the renaming), it +# is possible to just rename a command to itself: +# +# SENTINEL rename-command mymaster CONFIG CONFIG + +# HOSTNAMES SUPPORT +# +# Normally Sentinel uses only IP addresses and requires SENTINEL MONITOR +# to specify an IP address. Also, it requires the Valkey replica-announce-ip +# keyword to specify only IP addresses. +# +# You may enable hostnames support by enabling resolve-hostnames. Note +# that you must make sure your DNS is configured properly and that DNS +# resolution does not introduce very long delays. +# +SENTINEL resolve-hostnames no + +# When resolve-hostnames is enabled, Sentinel still uses IP addresses +# when exposing instances to users, configuration files, etc. If you want +# to retain the hostnames when announced, enable announce-hostnames below. +# +SENTINEL announce-hostnames no + +# When primary-reboot-down-after-period is set to 0, Sentinel does not fail over +# when receiving a -LOADING response from a primary. This was the only supported +# behavior before Redis OSS 7.0. +# +# Otherwise, Sentinel will use this value as the time (in ms) it is willing to +# accept a -LOADING response after a primary has been rebooted, before failing +# over. + +SENTINEL primary-reboot-down-after-period mymaster 0 \ No newline at end of file diff --git a/src/managers/config.py b/src/managers/config.py index 32ae023..f1e8566 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -16,7 +16,18 @@ from core.base_workload import WorkloadBase from core.cluster_state import ClusterState -from literals import ACL_FILE, CLIENT_PORT, INTERNAL_USER +from literals import ( + ACL_FILE, + CHARM_USER, + CLIENT_PORT, + DATA_DIR, + INTERNAL_USER, + PRIMARY_NAME, + QUORUM_NUMBER, + SENTINEL_CONFIG_FILE, + SENTINEL_PORT, + SENTINEL_USER, +) from statuses import CharmStatuses logger = logging.getLogger(__name__) @@ -42,6 +53,8 @@ def config_properties(self) -> dict[str, str]: Dictionary of properties to be written to the config file. """ config_properties = {} + if not self.state.unit_server.model or not self.state.cluster.model: + return config_properties # load the config properties provided from the template in this repo # it does NOT load the file from disk in the charm unit in order to avoid config drift @@ -60,6 +73,8 @@ def config_properties(self) -> dict[str, str]: config_properties[key.strip()] = value.strip() # Adjust default values + # dir + config_properties["dir"] = DATA_DIR # port config_properties["port"] = str(CLIENT_PORT) @@ -67,7 +82,26 @@ def config_properties(self) -> dict[str, str]: config_properties["bind"] = "0.0.0.0 -::1" # Use the ACL file - config_properties["aclfile"] = str(ACL_FILE) + config_properties["aclfile"] = ACL_FILE + + # # logfile location + # config_properties["logfile"] = VALKEY_LOG_FILE + + logger.debug( + "primary: %s, hostname: %s", + self.state.cluster.model.primary_ip, + self.state.unit_server.model.hostname, + ) + # replicaof + if ( + self.state.cluster.model.primary_ip + and self.state.cluster.model.primary_ip != self.state.unit_server.model.private_ip + ): + # set replicaof + logger.debug("Setting replicaof to primary %s", self.state.cluster.model.primary_ip) + config_properties["replicaof"] = f"{self.state.cluster.model.primary_ip} {CLIENT_PORT}" + config_properties["primaryuser"] = "replication-user" + config_properties["primaryauth"] = "testpassword" # TODO make this configurable return config_properties @@ -92,11 +126,49 @@ def set_acl_file(self, charmed_operator_password: str = "") -> None: charmed_operator_password_hash = hashlib.sha256( charmed_operator_password.encode("utf-8") ).hexdigest() + # sentinel user + charmed_replication_password = self.state.cluster.internal_user_credentials.get( + SENTINEL_USER, "" + ) + charmed_replication_password_hash = hashlib.sha256( + charmed_replication_password.encode("utf-8") + ).hexdigest() # write the ACL file acl_content = "user default off\n" acl_content += f"user {INTERNAL_USER} on #{charmed_operator_password_hash} ~* +@all\n" + acl_content += f"user {SENTINEL_USER} on #{charmed_replication_password_hash} +client +config +info +publish +subscribe +monitor +ping +replicaof +failover +script|kill +multi +exec &__sentinel__:hello\n" + # TODO make the replication user password configurable + acl_content += "user replication-user on >testpassword +psync +replconf +ping\n" self.workload.write_file(acl_content, ACL_FILE) + def set_sentinel_config(self) -> None: + """Write sentinel configuration file.""" + if not self.state.cluster.model or not self.state.cluster.model.primary_ip: + logger.warning("Cannot write sentinel config without primary details set") + return + if not ( + charmed_replication_password := self.state.cluster.internal_user_credentials.get( + SENTINEL_USER + ) + ): + logger.warning("Cannot write sentinel config without sentinel user credentials set") + return + logger.debug("Writing Sentinel configuration") + + sentinel_config = f"port {SENTINEL_PORT}\n" + # TODO consider adding quorum calculation based on number of units + sentinel_config += f"sentinel monitor {PRIMARY_NAME} {self.state.cluster.model.primary_ip} {CLIENT_PORT} {QUORUM_NUMBER}\n" + sentinel_config += f"sentinel auth-user {PRIMARY_NAME} {SENTINEL_USER}\n" + sentinel_config += f"sentinel auth-pass {PRIMARY_NAME} {charmed_replication_password}\n" + # TODO consider making these configs adjustable via charm config + sentinel_config += f"sentinel down-after-milliseconds {PRIMARY_NAME} 30000\n" + sentinel_config += f"sentinel failover-timeout {PRIMARY_NAME} 180000\n" + sentinel_config += f"sentinel parallel-syncs {PRIMARY_NAME} 1\n" + + self.workload.write_file( + sentinel_config, SENTINEL_CONFIG_FILE, mode=0o600, user=CHARM_USER, group=CHARM_USER + ) + def generate_password(self) -> str: """Create randomized string for use as app passwords. diff --git a/src/workload_k8s.py b/src/workload_k8s.py index 5e6b5a6..aa91898 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -11,7 +11,7 @@ from charmlibs import pathops from core.base_workload import WorkloadBase -from literals import CHARM, CHARM_USER, CONFIG_FILE +from literals import CHARM, CHARM_USER, CONFIG_FILE, SENTINEL_CONFIG_FILE logger = logging.getLogger(__name__) @@ -25,7 +25,9 @@ def __init__(self, container: ops.Container | None) -> None: self.container = container self.config_file = pathops.ContainerPath(CONFIG_FILE, container=container) + self.sentinel_config = pathops.ContainerPath(SENTINEL_CONFIG_FILE, container=container) self.valkey_service = "valkey" + self.sentinel_service = "valkey-sentinel" self.metric_service = "metric_exporter" @property @@ -48,6 +50,14 @@ def pebble_layer(self) -> ops.pebble.Layer: "group": CHARM_USER, "startup": "enabled", }, + self.sentinel_service: { + "override": "replace", + "summary": "Valkey sentinel service", + "command": f"valkey-sentinel {self.sentinel_config}", + "user": CHARM_USER, + "group": CHARM_USER, + "startup": "enabled", + }, self.metric_service: { "override": "replace", "summary": "Valkey metric exporter", @@ -63,7 +73,7 @@ def pebble_layer(self) -> ops.pebble.Layer: @override def start(self) -> None: self.container.add_layer(CHARM, self.pebble_layer, combine=True) - self.container.restart(self.valkey_service, self.metric_service) + self.container.restart(self.valkey_service, self.sentinel_service, self.metric_service) @override def write_config_file(self, config: dict[str, str]) -> None: @@ -73,12 +83,34 @@ def write_config_file(self, config: dict[str, str]) -> None: path.write_text(config_string) @override - def write_file(self, content: str, path: str) -> None: + def write_file( + self, + content: str, + path: str, + mode: int | None = None, + user: str | None = None, + group: str | None = None, + ) -> None: """Write content to a file on disk. Args: content (str): The content to be written. path (str): The file path where the content should be written. + mode (int, optional): The file mode (permissions). Defaults to None. + user (str, optional): The user name. Defaults to None. + group (str, optional): The group name. Defaults to None. """ file_path = pathops.ContainerPath(path, container=self.container) - file_path.write_text(content) + file_path.write_text(content, mode=mode, user=user, group=group) + + def mkdir( + self, path: str, mode: int = 0o755, user: str | None = None, group: str | None = None + ) -> None: + """Create a directory on disk. + + Args: + path (str): The directory path to be created. + mode (int, optional): The directory mode (permissions). Defaults to None. + """ + dir_path = pathops.ContainerPath(path, container=self.container) + dir_path.mkdir(mode=mode, user=user, group=group) From 12e63fb49a560f00a78697aca6a022750e7c81e0 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 29 Jan 2026 05:55:40 +0000 Subject: [PATCH 029/282] set sentinel acl file --- src/charm.py | 11 ++++++----- src/literals.py | 1 + src/managers/config.py | 20 +++++++++++++++++++- 3 files changed, 26 insertions(+), 6 deletions(-) diff --git a/src/charm.py b/src/charm.py index a1740df..55ac8e1 100755 --- a/src/charm.py +++ b/src/charm.py @@ -42,17 +42,17 @@ def __init__(self, *args) -> None: self.base_events = BaseEvents(self) # --- Observers --- - self.framework.observe(self.on.start, self._on_ready) + self.framework.observe(self.on.start, self._on_start) - def _on_ready(self, event: ops.StartEvent) -> None: - """Handle the `pebble-ready` event.""" + def _on_start(self, event: ops.StartEvent) -> None: + """Handle the `start` event.""" if not self.workload.can_connect: logger.warning("Container not ready yet") event.defer() return if not self.unit.is_leader() and ( - not self.state.cluster.internal_user_credentials + not self.state.cluster.internal_users_credentials or not self.state.cluster.model.primary_ip ): logger.info("Deferring leader write primary and internal user credentials") @@ -61,7 +61,8 @@ def _on_ready(self, event: ops.StartEvent) -> None: self.config_manager.set_config_properties() self.config_manager.set_acl_file() - self.config_manager.set_sentinel_config() + self.config_manager.set_sentinel_config_properties() + self.config_manager.set_sentinel_acl_file() self.workload.mkdir(DATA_DIR, user=CHARM_USER, group=CHARM_USER) self.workload.start() logger.info("Services started") diff --git a/src/literals.py b/src/literals.py index 84e2274..e07f2c8 100644 --- a/src/literals.py +++ b/src/literals.py @@ -13,6 +13,7 @@ CONFIG_FILE = "/var/lib/valkey/valkey.conf" SENTINEL_CONFIG_FILE = "/var/lib/valkey/sentinel.conf" ACL_FILE = "/var/lib/valkey/users.acl" +SENTINEL_ACL_FILE = "/var/lib/valkey/sentinel-users.acl" DATA_DIR = "/var/lib/valkey/data" PEER_RELATION = "valkey-peers" diff --git a/src/managers/config.py b/src/managers/config.py index ca45c5b..5f6035c 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -24,6 +24,7 @@ DATA_DIR, PRIMARY_NAME, QUORUM_NUMBER, + SENTINEL_ACL_FILE, SENTINEL_CONFIG_FILE, SENTINEL_PORT, CharmUsers, @@ -145,7 +146,7 @@ def _get_user_acl_line(self, user: CharmUsers, passwords: dict[str, str] | None acl_line = f"user {user.value} on #{password_hash} {CHARM_USERS_ROLE_MAP[user]}\n" return acl_line - def set_sentinel_config(self) -> None: + def set_sentinel_config_properties(self) -> None: """Write sentinel configuration file.""" if not self.state.cluster.model or not self.state.cluster.model.primary_ip: logger.warning("Cannot write sentinel config without primary details set") @@ -177,6 +178,23 @@ def set_sentinel_config(self) -> None: sentinel_config, SENTINEL_CONFIG_FILE, mode=0o600, user=CHARM_USER, group=CHARM_USER ) + def set_sentinel_acl_file(self, passwords: dict[str, str] | None = None) -> None: + """Write the Sentinel ACL file with appropriate user permissions. + + Args: + passwords (dict[str, str] | None): Optional dictionary of passwords to use. If not provided, + the passwords from the cluster state will be used. + """ + logger.debug("Writing Sentinel ACL configuration") + acl_content = "user default off\n" + for user in CharmUsers: + # only process VALKEY users + # Sentinel users should be in the sentinel acl file + if "VALKEY_" in str(user): + continue + acl_content += self._get_user_acl_line(user, passwords=passwords) + self.workload.write_file(acl_content, SENTINEL_ACL_FILE) + def generate_password(self) -> str: """Create randomized string for use as app passwords. From 935d794c389bd047fa57be286be945d1da38b275 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 29 Jan 2026 06:07:32 +0000 Subject: [PATCH 030/282] add monitoring user --- src/core/models.py | 1 + src/literals.py | 2 ++ 2 files changed, 3 insertions(+) diff --git a/src/core/models.py b/src/core/models.py index 66bebf5..d0b91b0 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -33,6 +33,7 @@ class PeerAppModel(PeerModel): charmed_operator_password: InternalUsersSecret = Field(default="") charmed_sentinel_valkey_password: InternalUsersSecret = Field(default="") charmed_replication_password: InternalUsersSecret = Field(default="") + charmed_stats_password: InternalUsersSecret = Field(default="") charmed_sentinel_peers_password: InternalUsersSecret = Field(default="") charmed_sentinel_operator_password: InternalUsersSecret = Field(default="") diff --git a/src/literals.py b/src/literals.py index c541698..2b76437 100644 --- a/src/literals.py +++ b/src/literals.py @@ -29,6 +29,7 @@ class CharmUsers(str, Enum): VALKEY_ADMIN = "charmed-operator" VALKEY_SENTINEL = "charmed-sentinel-valkey" VALKEY_REPLICA = "charmed-replication" + VALKEY_MONITORING = "charmed-stats" # Sentinel users SENTINEL_ADMIN = "charmed-sentinel-peers" @@ -39,6 +40,7 @@ class CharmUsers(str, Enum): CharmUsers.VALKEY_ADMIN: "~* +@all", CharmUsers.VALKEY_SENTINEL: "+client +config +info +publish +subscribe +monitor +ping +replicaof +failover +script|kill +multi +exec &__sentinel__:hello", CharmUsers.VALKEY_REPLICA: "+psync +replconf +ping", + CharmUsers.VALKEY_MONITORING: "-@all +@connection +memory -readonly +strlen +config|get +xinfo +pfcount -quit +zcard +type +xlen -readwrite -command +client -wait +scard +llen +hlen +get +eval +slowlog +cluster|info +cluster|slots +cluster|nodes -hello -echo +info +latency +scan -reset -auth -asking", CharmUsers.SENTINEL_ADMIN: "~* +@all", CharmUsers.SENTINEL_CHARM_ADMIN: "~* +@all", } From 9b27441a713bbacf3e793a3ca16c08198793e197 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 29 Jan 2026 06:11:19 +0000 Subject: [PATCH 031/282] revert back secret name --- tests/integration/k8s/test_charm.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/integration/k8s/test_charm.py b/tests/integration/k8s/test_charm.py index ee9ce21..0ca8fa9 100644 --- a/tests/integration/k8s/test_charm.py +++ b/tests/integration/k8s/test_charm.py @@ -148,7 +148,7 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: hostnames = get_cluster_hostnames(juju, APP_NAME) logger.info("Creating new user secret") - secret_name = "my_secret_2" + secret_name = "my_secret" new_password = "even-newer-password" secret_id = juju.add_secret( name=secret_name, content={CharmUsers.VALKEY_ADMIN.value: new_password} From 3f2177ee2e9575eb173946e66474cc195f1ef956 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 29 Jan 2026 06:28:17 +0000 Subject: [PATCH 032/282] update users for acls and configs --- src/managers/config.py | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/src/managers/config.py b/src/managers/config.py index 5f6035c..851fd3e 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -101,8 +101,10 @@ def config_properties(self) -> dict[str, str]: # set replicaof logger.debug("Setting replicaof to primary %s", self.state.cluster.model.primary_ip) config_properties["replicaof"] = f"{self.state.cluster.model.primary_ip} {CLIENT_PORT}" - config_properties["primaryuser"] = "replication-user" - config_properties["primaryauth"] = "testpassword" # TODO make this configurable + config_properties["primaryuser"] = CharmUsers.VALKEY_REPLICA.value + config_properties["primaryauth"] = self.state.cluster.internal_users_credentials.get( + CharmUsers.VALKEY_REPLICA.value, "" + ) return config_properties @@ -161,14 +163,21 @@ def set_sentinel_config_properties(self) -> None: logger.debug("Writing Sentinel configuration") sentinel_config = f"port {SENTINEL_PORT}\n" + + sentinel_config += f"aclfile {SENTINEL_ACL_FILE}\n" # TODO consider adding quorum calculation based on number of units sentinel_config += f"sentinel monitor {PRIMARY_NAME} {self.state.cluster.model.primary_ip} {CLIENT_PORT} {QUORUM_NUMBER}\n" + # auth settings + # auth-user is used by sentinel to authenticate to the valkey primary sentinel_config += ( f"sentinel auth-user {PRIMARY_NAME} {CharmUsers.VALKEY_SENTINEL.value}\n" ) sentinel_config += ( f"sentinel auth-pass {PRIMARY_NAME} {charmed_sentinel_valkey_password}\n" ) + # sentinel admin user settings used by sentinel for its own authentication + sentinel_config += f"sentinel sentinel-user {CharmUsers.SENTINEL_ADMIN.value}\n" + sentinel_config += f"sentinel sentinel-pass {self.state.cluster.internal_users_credentials.get(CharmUsers.SENTINEL_ADMIN.value, '')}\n" # TODO consider making these configs adjustable via charm config sentinel_config += f"sentinel down-after-milliseconds {PRIMARY_NAME} 30000\n" sentinel_config += f"sentinel failover-timeout {PRIMARY_NAME} 180000\n" From 31c217a766da06964b53f541e40b746fba8cce85 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 29 Jan 2026 09:12:37 +0000 Subject: [PATCH 033/282] add update primaryauth on password change --- src/common/client.py | 18 ++++++++++++++++++ src/common/exceptions.py | 4 ++++ src/events/base_events.py | 15 +++++++++++---- src/managers/cluster.py | 24 +++++++++++++++++++++++- 4 files changed, 56 insertions(+), 5 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index e092eec..fef79e8 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -16,6 +16,7 @@ from common.exceptions import ( ValkeyACLLoadError, + ValkeyConfigSetError, ValkeyCustomCommandError, ) from literals import CLIENT_PORT @@ -77,3 +78,20 @@ def reload_acl(self) -> None: except ValkeyCustomCommandError as e: logger.error(f"Error loading ACL: {e}") raise ValkeyACLLoadError(f"Could not load ACL: {e}") + + def set_runtime_config(self, config_properties: dict[str, str]) -> None: + """Set configuration properties on the Valkey server. + + Args: + config_properties (dict[str, str]): Configuration properties to set. + """ + try: + command = ["CONFIG", "SET"] + for key, value in config_properties.items(): + command.append(key) + command.append(value) + result = asyncio.run(self._run_custom_command(command)) + logger.debug("Config set result: %s", result) + except ValkeyCustomCommandError as e: + logger.error("Error setting config: %s", e) + raise ValkeyConfigSetError(f"Could not set config: {e}") diff --git a/src/common/exceptions.py b/src/common/exceptions.py index 71e16bc..ef81e29 100644 --- a/src/common/exceptions.py +++ b/src/common/exceptions.py @@ -14,3 +14,7 @@ class ValkeyCustomCommandError(ValkeyClientError): class ValkeyACLLoadError(ValkeyClientError): """Custom Exception if ACL file could not be loaded in valkey cluster.""" + + +class ValkeyConfigSetError(ValkeyClientError): + """Custom Exception if setting configuration on valkey cluster fails.""" diff --git a/src/events/base_events.py b/src/events/base_events.py index fa2f0b8..e90ed49 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -10,7 +10,7 @@ import ops -from common.exceptions import ValkeyACLLoadError +from common.exceptions import ValkeyACLLoadError, ValkeyConfigSetError from literals import ( INTERNAL_USERS_PASSWORD_CONFIG, INTERNAL_USERS_SECRET_LABEL_SUFFIX, @@ -137,7 +137,8 @@ def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: try: self.charm.config_manager.set_acl_file() self.charm.cluster_manager.reload_acl_file() - except ValkeyACLLoadError as e: + self.charm.cluster_manager.update_primary_auth() + except (ValkeyACLLoadError, ValkeyConfigSetError) as e: logger.error(e) self.charm.status.set_running_status( ClusterStatuses.PASSWORD_UPDATE_FAILED.value, @@ -158,7 +159,12 @@ def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: if admin_secret_id == event.secret.id: try: self._update_internal_users_password(str(admin_secret_id)) - except (ops.ModelError, ops.SecretNotFoundError, ValkeyACLLoadError): + except ( + ops.ModelError, + ops.SecretNotFoundError, + ValkeyACLLoadError, + ValkeyConfigSetError, + ): event.defer() return @@ -216,13 +222,14 @@ def _update_internal_users_password(self, secret_id: str) -> None: try: self.charm.config_manager.set_acl_file(passwords=passwords) self.charm.cluster_manager.reload_acl_file() + self.charm.cluster_manager.update_primary_auth() self.charm.state.cluster.update( { f"{user.value.replace('-', '_')}_password": passwords[user.value] for user in CharmUsers } ) - except ValkeyACLLoadError as e: + except (ValkeyACLLoadError, ValkeyConfigSetError) as e: logger.error(e) self.charm.status.set_running_status( ClusterStatuses.PASSWORD_UPDATE_FAILED.value, diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 9e9492c..e8ed606 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -11,7 +11,7 @@ from data_platform_helpers.advanced_statuses.types import Scope from common.client import ValkeyClient -from common.exceptions import ValkeyACLLoadError +from common.exceptions import ValkeyACLLoadError, ValkeyConfigSetError from core.base_workload import WorkloadBase from core.cluster_state import ClusterState from literals import CharmUsers @@ -47,6 +47,28 @@ def reload_acl_file(self) -> None: except ValkeyACLLoadError: raise + def update_primary_auth(self) -> None: + """Update the primaryauth runtime configuration on the Valkey server.""" + if self.state.unit_server.model.private_ip == self.state.cluster.model.primary_ip: + logger.info("Current unit is primary; no need to update primaryauth") + return + try: + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + hosts=self.cluster_hostnames, + ) + client.set_runtime_config( + { + "primaryauth": self.state.cluster.internal_users_credentials.get( + CharmUsers.VALKEY_REPLICA.value, "" + ) + } + ) + logger.info("Updated primaryauth runtime configuration on Valkey server") + except ValkeyConfigSetError: + raise + def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the cluster manager's statuses.""" status_list: list[StatusObject] = self.state.statuses.get( From b5a9bea4d2508910692b79071030fed25a26277b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 29 Jan 2026 10:16:38 +0000 Subject: [PATCH 034/282] switch to ips instead of hostnames --- src/managers/cluster.py | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index e8ed606..2f82a05 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -33,7 +33,7 @@ def __init__(self, state: ClusterState, workload: WorkloadBase): self.admin_password = self.state.cluster.internal_users_credentials.get( CharmUsers.VALKEY_ADMIN.value, "" ) - self.cluster_hostnames = [server.model.hostname for server in self.state.servers] + self.cluster_ips = [server.model.private_ip for server in self.state.servers] def reload_acl_file(self) -> None: """Reload the ACL file into the cluster.""" @@ -41,7 +41,7 @@ def reload_acl_file(self) -> None: client = ValkeyClient( username=self.admin_user, password=self.admin_password, - hosts=self.cluster_hostnames, + hosts=self.cluster_ips, ) client.reload_acl() except ValkeyACLLoadError: @@ -56,7 +56,7 @@ def update_primary_auth(self) -> None: client = ValkeyClient( username=self.admin_user, password=self.admin_password, - hosts=self.cluster_hostnames, + hosts=self.cluster_ips, ) client.set_runtime_config( { From ef5415ad308744fa1a696eb98702f6a41449cd6b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 29 Jan 2026 10:37:10 +0000 Subject: [PATCH 035/282] fix unit tests and remove checks from manager --- src/managers/config.py | 14 +--- src/workload_k8s.py | 2 + tests/unit/test_charm.py | 144 ++++++++++++++++++++++++++++----------- 3 files changed, 106 insertions(+), 54 deletions(-) diff --git a/src/managers/config.py b/src/managers/config.py index 851fd3e..f6a3d5f 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -150,16 +150,6 @@ def _get_user_acl_line(self, user: CharmUsers, passwords: dict[str, str] | None def set_sentinel_config_properties(self) -> None: """Write sentinel configuration file.""" - if not self.state.cluster.model or not self.state.cluster.model.primary_ip: - logger.warning("Cannot write sentinel config without primary details set") - return - if not ( - charmed_sentinel_valkey_password := self.state.cluster.internal_users_credentials.get( - CharmUsers.VALKEY_SENTINEL.value - ) - ): - logger.warning("Cannot write sentinel config without sentinel user credentials set") - return logger.debug("Writing Sentinel configuration") sentinel_config = f"port {SENTINEL_PORT}\n" @@ -172,9 +162,7 @@ def set_sentinel_config_properties(self) -> None: sentinel_config += ( f"sentinel auth-user {PRIMARY_NAME} {CharmUsers.VALKEY_SENTINEL.value}\n" ) - sentinel_config += ( - f"sentinel auth-pass {PRIMARY_NAME} {charmed_sentinel_valkey_password}\n" - ) + sentinel_config += f"sentinel auth-pass {PRIMARY_NAME} {self.state.cluster.internal_users_credentials.get(CharmUsers.VALKEY_SENTINEL.value, '')}\n" # sentinel admin user settings used by sentinel for its own authentication sentinel_config += f"sentinel sentinel-user {CharmUsers.SENTINEL_ADMIN.value}\n" sentinel_config += f"sentinel sentinel-pass {self.state.cluster.internal_users_credentials.get(CharmUsers.SENTINEL_ADMIN.value, '')}\n" diff --git a/src/workload_k8s.py b/src/workload_k8s.py index aa91898..342d01e 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -111,6 +111,8 @@ def mkdir( Args: path (str): The directory path to be created. mode (int, optional): The directory mode (permissions). Defaults to None. + user (str, optional): The user name. Defaults to None. + group (str, optional): The group name. Defaults to None. """ dir_path = pathops.ContainerPath(path, container=self.container) dir_path.mkdir(mode=mode, user=user, group=group) diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 2063efe..93a531c 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -25,12 +25,13 @@ CONTAINER = "valkey" SERVICE_VALKEY = "valkey" SERVICE_METRIC_EXPORTER = "metric_exporter" +SERVICE_SENTINEL = "valkey-sentinel" METADATA = yaml.safe_load(Path("./metadata.yaml").read_text()) APP_NAME = METADATA["name"] -def test_pebble_ready_leader_unit(cloud_spec): +def test_start_leader_unit(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) status_peer_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) @@ -54,6 +55,14 @@ def test_pebble_ready_leader_unit(cloud_spec): "group": CHARM_USER, "startup": "enabled", }, + SERVICE_SENTINEL: { + "override": "replace", + "summary": "Valkey sentinel service", + "command": "valkey-sentinel /var/lib/valkey/sentinel.conf", + "user": CHARM_USER, + "group": CHARM_USER, + "startup": "enabled", + }, SERVICE_METRIC_EXPORTER: { "override": "replace", "summary": "Valkey metric exporter", @@ -65,34 +74,42 @@ def test_pebble_ready_leader_unit(cloud_spec): } } - state_out = ctx.run(ctx.on.pebble_ready(container), state_in) - assert state_out.get_container(container.name).plan == expected_plan - assert ( - state_out.get_container(container.name).service_statuses[SERVICE_VALKEY] - == pebble.ServiceStatus.ACTIVE - ) - assert ( - state_out.get_container(container.name).service_statuses[SERVICE_METRIC_EXPORTER] - == pebble.ServiceStatus.ACTIVE - ) - assert state_out.unit_status == ActiveStatus() - assert status_is(state_out, CharmStatuses.SCALING_NOT_IMPLEMENTED.value, is_app=True) + with ( + patch("workload_k8s.ValkeyK8sWorkload.write_file"), + patch("workload_k8s.ValkeyK8sWorkload.mkdir"), + ): + # generate passwords + state_out = ctx.run(ctx.on.leader_elected(), state_in) - # container not ready - container = testing.Container(name=CONTAINER, can_connect=False) - state_in = testing.State( - model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), - leader=True, - relations={relation, status_peer_relation}, - containers={container}, - ) + # start event + state_out = ctx.run(ctx.on.start(), state_out) + assert state_out.get_container(container.name).plan == expected_plan + assert ( + state_out.get_container(container.name).service_statuses[SERVICE_VALKEY] + == pebble.ServiceStatus.ACTIVE + ) + assert ( + state_out.get_container(container.name).service_statuses[SERVICE_METRIC_EXPORTER] + == pebble.ServiceStatus.ACTIVE + ) + assert state_out.unit_status == ActiveStatus() + assert status_is(state_out, CharmStatuses.SCALING_NOT_IMPLEMENTED.value, is_app=True) + + # container not ready + container = testing.Container(name=CONTAINER, can_connect=False) + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + leader=True, + relations={relation, status_peer_relation}, + containers={container}, + ) - state_out = ctx.run(ctx.on.pebble_ready(container), state_in) - assert status_is(state_out, CharmStatuses.SERVICE_NOT_STARTED.value) - assert status_is(state_out, CharmStatuses.SERVICE_NOT_STARTED.value, is_app=True) + state_out = ctx.run(ctx.on.start(), state_in) + assert status_is(state_out, CharmStatuses.SERVICE_NOT_STARTED.value) + assert status_is(state_out, CharmStatuses.SERVICE_NOT_STARTED.value, is_app=True) -def test_pebble_ready_non_leader_unit(cloud_spec): +def test_start_non_leader_unit(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) status_peer_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) @@ -106,24 +123,31 @@ def test_pebble_ready_non_leader_unit(cloud_spec): containers={container}, ) - state_out = ctx.run(ctx.on.pebble_ready(container), state_in) - assert not state_out.get_container(container.name).service_statuses.get(SERVICE_VALKEY) - assert not state_out.get_container(container.name).service_statuses.get( - SERVICE_METRIC_EXPORTER - ) - assert status_is(state_out, CharmStatuses.SCALING_NOT_IMPLEMENTED.value) + with ( + patch("workload_k8s.ValkeyK8sWorkload.write_file"), + patch("workload_k8s.ValkeyK8sWorkload.mkdir"), + ): + # generate passwords + state_out = ctx.run(ctx.on.leader_elected(), state_in) - # container not ready - container = testing.Container(name=CONTAINER, can_connect=False) - state_in = testing.State( - model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), - leader=True, - relations={relation, status_peer_relation}, - containers={container}, - ) + state_out = ctx.run(ctx.on.start(), state_out) + assert not state_out.get_container(container.name).service_statuses.get(SERVICE_VALKEY) + assert not state_out.get_container(container.name).service_statuses.get( + SERVICE_METRIC_EXPORTER + ) + assert status_is(state_out, CharmStatuses.SCALING_NOT_IMPLEMENTED.value) + + # container not ready + container = testing.Container(name=CONTAINER, can_connect=False) + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + leader=True, + relations={relation, status_peer_relation}, + containers={container}, + ) - state_out = ctx.run(ctx.on.pebble_ready(container), state_in) - assert status_is(state_out, CharmStatuses.SERVICE_NOT_STARTED.value) + state_out = ctx.run(ctx.on.start(), state_in) + assert status_is(state_out, CharmStatuses.SERVICE_NOT_STARTED.value) def test_update_status_leader_unit(cloud_spec): @@ -310,10 +334,48 @@ def test_config_changed_leader_unit(): patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, patch("common.client.ValkeyClient.reload_acl") as mock_load_acl, + patch("common.client.ValkeyClient.set_runtime_config") as mock_set_runtime_config, + ): + state_out = ctx.run(ctx.on.config_changed(), state_in) + mock_set_acl_file.assert_called_once() + mock_load_acl.assert_called_once() + mock_set_runtime_config.assert_called_once() + secret_out = state_out.get_secret( + label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" + ) + assert ( + secret_out.latest_content.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") + == "secure-password" + ) + + +def test_config_changed_leader_unit_primary(): + ctx = testing.Context(ValkeyCharm) + relation = testing.PeerRelation( + id=1, endpoint=PEER_RELATION, local_app_data={"primary_ip": "127.0.1.1"} + ) + container = testing.Container(name=CONTAINER, can_connect=True) + + password_secret = testing.Secret( + tracked_content={CharmUsers.VALKEY_ADMIN.value: "secure-password"}, remote_grants=APP_NAME + ) + state_in = testing.State( + leader=True, + relations={relation}, + containers={container}, + secrets={password_secret}, + config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, + ) + with ( + patch("workload_k8s.ValkeyK8sWorkload.write_file"), + patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, + patch("common.client.ValkeyClient.reload_acl") as mock_load_acl, + patch("common.client.ValkeyClient.set_runtime_config") as mock_set_runtime_config, ): state_out = ctx.run(ctx.on.config_changed(), state_in) mock_set_acl_file.assert_called_once() mock_load_acl.assert_called_once() + mock_set_runtime_config.assert_not_called() secret_out = state_out.get_secret( label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" ) From 888ffbd0a46c4c5ce62c30081e257befb2f86908 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 29 Jan 2026 11:25:27 +0000 Subject: [PATCH 036/282] add statuses for starting --- src/charm.py | 25 ++++++++++++++++++++++++- src/core/base_workload.py | 5 +++++ src/managers/cluster.py | 6 +----- src/statuses.py | 15 +++++++++++---- src/workload_k8s.py | 12 ++++++++++++ 5 files changed, 53 insertions(+), 10 deletions(-) diff --git a/src/charm.py b/src/charm.py index 55ac8e1..a4fbd01 100755 --- a/src/charm.py +++ b/src/charm.py @@ -11,9 +11,10 @@ from core.cluster_state import ClusterState from events.base_events import BaseEvents -from literals import CHARM_USER, CONTAINER, DATA_DIR +from literals import CHARM_USER, CLIENT_PORT, CONTAINER, DATA_DIR from managers.cluster import ClusterManager from managers.config import ConfigManager +from statuses import ValkeyServiceStatuses from workload_k8s import ValkeyK8sWorkload logger = logging.getLogger(__name__) @@ -64,7 +65,29 @@ def _on_start(self, event: ops.StartEvent) -> None: self.config_manager.set_sentinel_config_properties() self.config_manager.set_sentinel_acl_file() self.workload.mkdir(DATA_DIR, user=CHARM_USER, group=CHARM_USER) + self.status.set_running_status( + ValkeyServiceStatuses.SERVICE_STARTING.value, + scope="unit", + component_name=self.cluster_manager.name, + statuses_state=self.state.statuses, + ) self.workload.start() + if self.workload.alive(): + logger.info("Workload started successfully. Opening client port") + self.unit.open_port("tcp", CLIENT_PORT) + self.state.statuses.delete( + ValkeyServiceStatuses.SERVICE_STARTING.value, + scope="unit", + component=self.cluster_manager.name, + ) + else: + logger.error("Workload failed to start.") + self.status.set_running_status( + ValkeyServiceStatuses.SERVICE_NOT_RUNNING.value, + scope="unit", + component_name=self.cluster_manager.name, + statuses_state=self.state.statuses, + ) logger.info("Services started") self.state.unit_server.update({"started": True}) diff --git a/src/core/base_workload.py b/src/core/base_workload.py index 2206c0a..1d48628 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -76,3 +76,8 @@ def get_private_ip(self) -> str: logger.error(f"Error executing command '{cmd}': {e}") return socket.gethostbyname(socket.gethostname()) + + @abstractmethod + def alive(self) -> bool: + """Check if the Valkey service is running.""" + pass diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 2f82a05..3df6dea 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -79,10 +79,6 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje status_list.append(CharmStatuses.SERVICE_NOT_STARTED.value) if not self.state.unit_server.is_started: - status_list.append(CharmStatuses.SCALING_NOT_IMPLEMENTED.value) - - if scope == "app": - # todo: remove when scaling is implemented - status_list.append(CharmStatuses.SCALING_NOT_IMPLEMENTED.value) + status_list.append(CharmStatuses.SERVICE_NOT_STARTED.value) return status_list if status_list else [CharmStatuses.ACTIVE_IDLE.value] diff --git a/src/statuses.py b/src/statuses.py index 0f557a2..84f91c6 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -15,10 +15,6 @@ class CharmStatuses(Enum): """Collection of possible statuses for the charm.""" ACTIVE_IDLE = StatusObject(status="active", message="") - SCALING_NOT_IMPLEMENTED = StatusObject( - status="blocked", - message="Scaling Valkey is not implemented yet", - ) SERVICE_NOT_STARTED = StatusObject(status="blocked", message="Service not started") SECRET_ACCESS_ERROR = StatusObject( status="blocked", @@ -33,3 +29,14 @@ class ClusterStatuses(Enum): PASSWORD_UPDATE_FAILED = StatusObject( status="blocked", message="Failed to update an internal user's password", running="async" ) + + +class ValkeyServiceStatuses(Enum): + """Collection of possible Valkey service related statuses.""" + + SERVICE_STARTING = StatusObject( + status="maintenance", message="waiting for valkey to start...", running="async" + ) + SERVICE_NOT_RUNNING = StatusObject( + status="blocked", message="valkey service not running", running="async" + ) diff --git a/src/workload_k8s.py b/src/workload_k8s.py index 342d01e..8e4d90c 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -116,3 +116,15 @@ def mkdir( """ dir_path = pathops.ContainerPath(path, container=self.container) dir_path.mkdir(mode=mode, user=user, group=group) + + def alive(self) -> bool: + """Check if the Valkey service is running.""" + for service_name in [ + self.valkey_service, + self.sentinel_service, + self.metric_service, + ]: + service = self.container.get_service(service_name) + if not service.is_running(): + return False + return True From 5f2bc81c88a04565bcb2af591b6715909d1f6771 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 29 Jan 2026 11:25:35 +0000 Subject: [PATCH 037/282] fix unit tests --- tests/integration/k8s/helpers.py | 4 ---- tests/unit/test_charm.py | 39 +++++++++++++++++++++++++------- 2 files changed, 31 insertions(+), 12 deletions(-) diff --git a/tests/integration/k8s/helpers.py b/tests/integration/k8s/helpers.py index 56a24b0..52bf28f 100644 --- a/tests/integration/k8s/helpers.py +++ b/tests/integration/k8s/helpers.py @@ -36,10 +36,6 @@ class CharmStatuses(Enum): """List all StatusObjects here that are checked against in the integration tests.""" - SCALING_NOT_IMPLEMENTED = StatusObject( - status="blocked", - message="Scaling Valkey is not implemented yet", - ) SECRET_ACCESS_ERROR = StatusObject( status="blocked", message="Cannot access configured secret, check permissions", diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 93a531c..ac00ba0 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -30,6 +30,12 @@ METADATA = yaml.safe_load(Path("./metadata.yaml").read_text()) APP_NAME = METADATA["name"] +internal_passwords_secret = testing.Secret( + tracked_content={f"{user.value}-password": "secure-password" for user in CharmUsers}, + owner="app", + label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}", +) + def test_start_leader_unit(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) @@ -93,7 +99,7 @@ def test_start_leader_unit(cloud_spec): == pebble.ServiceStatus.ACTIVE ) assert state_out.unit_status == ActiveStatus() - assert status_is(state_out, CharmStatuses.SCALING_NOT_IMPLEMENTED.value, is_app=True) + assert state_out.app_status == ActiveStatus() # container not ready container = testing.Container(name=CONTAINER, can_connect=False) @@ -127,15 +133,30 @@ def test_start_non_leader_unit(cloud_spec): patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("workload_k8s.ValkeyK8sWorkload.mkdir"), ): - # generate passwords - state_out = ctx.run(ctx.on.leader_elected(), state_in) - - state_out = ctx.run(ctx.on.start(), state_out) + state_out = ctx.run(ctx.on.start(), state_in) assert not state_out.get_container(container.name).service_statuses.get(SERVICE_VALKEY) assert not state_out.get_container(container.name).service_statuses.get( SERVICE_METRIC_EXPORTER ) - assert status_is(state_out, CharmStatuses.SCALING_NOT_IMPLEMENTED.value) + assert "start" in [e.name for e in state_out.deferred] + + relation = testing.PeerRelation( + id=1, endpoint=PEER_RELATION, local_app_data={"primary_ip": "127.1.0.1"} + ) + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + leader=False, + relations={relation, status_peer_relation}, + secrets={internal_passwords_secret}, + containers={container}, + ) + state_out = ctx.run(ctx.on.start(), state_in) + assert state_out.get_container(container.name).service_statuses.get(SERVICE_VALKEY) + assert state_out.get_container(container.name).service_statuses.get( + SERVICE_METRIC_EXPORTER + ) + assert state_out.get_container(container.name).service_statuses[SERVICE_SENTINEL] + assert state_out.get_relation(1).local_unit_data["started"] == "true" # container not ready container = testing.Container(name=CONTAINER, can_connect=False) @@ -174,7 +195,9 @@ def test_update_status_leader_unit(cloud_spec): def test_update_status_non_leader_unit(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) - relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + relation = testing.PeerRelation( + id=1, endpoint=PEER_RELATION, local_unit_data={"started": "true"} + ) status_peer_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) container = testing.Container(name=CONTAINER, can_connect=True) @@ -185,7 +208,7 @@ def test_update_status_non_leader_unit(cloud_spec): containers={container}, ) state_out = ctx.run(ctx.on.update_status(), state_in) - assert status_is(state_out, CharmStatuses.SCALING_NOT_IMPLEMENTED.value) + assert state_out.unit_status == ActiveStatus() def test_internal_user_creation(): From 79b45f0cfbc17d91b372aa24ec6c1e3460568ef0 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 30 Jan 2026 06:28:05 +0000 Subject: [PATCH 038/282] switch from valkey glide to valkey cli with subprocess --- src/common/exceptions.py | 4 ++++ src/core/base_workload.py | 16 +++++++++++++++ src/core/cluster_state.py | 5 +++-- src/managers/cluster.py | 43 +++++++++++++++++---------------------- src/workload_k8s.py | 25 +++++++++++++++++++++++ 5 files changed, 67 insertions(+), 26 deletions(-) diff --git a/src/common/exceptions.py b/src/common/exceptions.py index ef81e29..3a78681 100644 --- a/src/common/exceptions.py +++ b/src/common/exceptions.py @@ -18,3 +18,7 @@ class ValkeyACLLoadError(ValkeyClientError): class ValkeyConfigSetError(ValkeyClientError): """Custom Exception if setting configuration on valkey cluster fails.""" + + +class ValkeyExecCommandError(Exception): + """Custom Exception if exec command on valkey container fails.""" diff --git a/src/core/base_workload.py b/src/core/base_workload.py index 1d48628..70e4331 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -81,3 +81,19 @@ def get_private_ip(self) -> str: def alive(self) -> bool: """Check if the Valkey service is running.""" pass + + @abstractmethod + def exec_command( + self, command: list[str], username: str, password: str + ) -> tuple[str, str | None] | None: + """Execute a Valkey command inside the workload. + + Args: + command (list[str]): The command to execute as a list of strings. + username (str): The username for authentication. + password (str): The password for authentication. + + Returns: + bool: True if the command executed successfully, False otherwise. + """ + pass diff --git a/src/core/cluster_state.py b/src/core/cluster_state.py index 6f62510..1eda942 100644 --- a/src/core/cluster_state.py +++ b/src/core/cluster_state.py @@ -100,18 +100,19 @@ def servers(self) -> set[ValkeyServer]: return servers - def get_secret_from_id(self, secret_id: str) -> dict[str, str]: + def get_secret_from_id(self, secret_id: str, refresh: bool = False) -> dict[str, str]: """Resolve the given id of a Juju secret and return the content as a dict. Args: model (Model): Model object. secret_id (str): The id of the secret. + refresh (bool): Whether to refresh the secret content from the controller. Defaults to False. Returns: dict: The content of the secret. """ try: - secret_content = self.charm.model.get_secret(id=secret_id).get_content(refresh=True) + secret_content = self.charm.model.get_secret(id=secret_id).get_content(refresh=refresh) except ops.SecretNotFoundError: raise ops.SecretNotFoundError(f"The secret '{secret_id}' does not exist.") except ops.ModelError: diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 3df6dea..d37f836 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -10,8 +10,7 @@ from data_platform_helpers.advanced_statuses.protocol import ManagerStatusProtocol from data_platform_helpers.advanced_statuses.types import Scope -from common.client import ValkeyClient -from common.exceptions import ValkeyACLLoadError, ValkeyConfigSetError +from common.exceptions import ValkeyACLLoadError, ValkeyConfigSetError, ValkeyExecCommandError from core.base_workload import WorkloadBase from core.cluster_state import ClusterState from literals import CharmUsers @@ -30,22 +29,18 @@ def __init__(self, state: ClusterState, workload: WorkloadBase): self.state = state self.workload = workload self.admin_user = CharmUsers.VALKEY_ADMIN.value - self.admin_password = self.state.cluster.internal_users_credentials.get( - CharmUsers.VALKEY_ADMIN.value, "" - ) - self.cluster_ips = [server.model.private_ip for server in self.state.servers] + self.admin_password = self.state.unit_server.valkey_admin_password + # target only the unit's valkey server IP + self.cluster_ips = [self.workload.get_private_ip()] def reload_acl_file(self) -> None: """Reload the ACL file into the cluster.""" try: - client = ValkeyClient( - username=self.admin_user, - password=self.admin_password, - hosts=self.cluster_ips, + self.workload.exec_command( + ["acl", "load"], username=self.admin_user, password=self.admin_password ) - client.reload_acl() - except ValkeyACLLoadError: - raise + except ValkeyExecCommandError: + raise ValkeyACLLoadError("Could not load ACL file into Valkey cluster.") def update_primary_auth(self) -> None: """Update the primaryauth runtime configuration on the Valkey server.""" @@ -53,21 +48,21 @@ def update_primary_auth(self) -> None: logger.info("Current unit is primary; no need to update primaryauth") return try: - client = ValkeyClient( + self.workload.exec_command( + [ + "config", + "set", + "primaryauth", + self.state.cluster.internal_users_credentials.get( + CharmUsers.VALKEY_REPLICA.value, "" + ), + ], username=self.admin_user, password=self.admin_password, - hosts=self.cluster_ips, - ) - client.set_runtime_config( - { - "primaryauth": self.state.cluster.internal_users_credentials.get( - CharmUsers.VALKEY_REPLICA.value, "" - ) - } ) logger.info("Updated primaryauth runtime configuration on Valkey server") - except ValkeyConfigSetError: - raise + except ValkeyExecCommandError: + raise ValkeyConfigSetError("Could not set primaryauth on Valkey server.") def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the cluster manager's statuses.""" diff --git a/src/workload_k8s.py b/src/workload_k8s.py index 8e4d90c..cba2077 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -10,6 +10,7 @@ import ops from charmlibs import pathops +from common.exceptions import ValkeyExecCommandError from core.base_workload import WorkloadBase from literals import CHARM, CHARM_USER, CONFIG_FILE, SENTINEL_CONFIG_FILE @@ -128,3 +129,27 @@ def alive(self) -> bool: if not service.is_running(): return False return True + + def exec_command( + self, command: list[str], username: str, password: str + ) -> tuple[str, str | None] | None: + """Execute a Valkey command inside the container. + + Args: + command (list[str]): The command to execute as a list of strings. + username (str): The username for authentication. + password (str): The password for authentication. + + Returns: + bool: True if the command executed successfully, False otherwise. + """ + full_command = ["valkey-cli"] + ["--user", username, "--pass", password] + command + try: + process = self.container.exec(full_command) + out, err = process.wait_output() + if err: + logger.warning("Command returned error: %s", err) + return out.strip(), err.strip() if err else None + except (ops.pebble.ExecError, ops.pebble.ChangeError) as e: + logger.error("Error executing command: %s", e) + raise ValkeyExecCommandError(f"Could not execute command{e}") From b1b4f0666d4aa4dde99a8e41b1aa534d2604776f Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 30 Jan 2026 06:28:32 +0000 Subject: [PATCH 039/282] add unit local admin password and fix integration tests --- poetry.lock | 29 +++++++++++- pyproject.toml | 1 + src/charm.py | 1 + src/core/models.py | 8 ++++ src/events/base_events.py | 8 +++- src/managers/config.py | 13 +++++ tests/integration/k8s/helpers.py | 73 ++++++++++++++++++++++++----- tests/integration/k8s/test_charm.py | 45 ++++++++---------- 8 files changed, 139 insertions(+), 39 deletions(-) diff --git a/poetry.lock b/poetry.lock index 86b3887..b2873ab 100644 --- a/poetry.lock +++ b/poetry.lock @@ -713,6 +713,21 @@ pytest = ">=6.2.5" [package.extras] dev = ["pre-commit", "pytest-asyncio", "tox"] +[[package]] +name = "python-dateutil" +version = "2.9.0.post0" +description = "Extensions to the standard Python datetime module" +optional = false +python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7" +groups = ["integration"] +files = [ + {file = "python-dateutil-2.9.0.post0.tar.gz", hash = "sha256:37dd54208da7e1cd875388217d5e00ebd4179249f90fb72437e91a35459a0ad3"}, + {file = "python_dateutil-2.9.0.post0-py2.py3-none-any.whl", hash = "sha256:a8b2bc7bffae282281c8140a97d3aa9c14da0b136dfe83f850eea9a5f7470427"}, +] + +[package.dependencies] +six = ">=1.5" + [[package]] name = "pyyaml" version = "6.0.3" @@ -859,6 +874,18 @@ files = [ {file = "shellcheck_py-0.11.0.1.tar.gz", hash = "sha256:5c620c88901e8f1d3be5934b31ea99e3310065e1245253741eafd0a275c8c9cc"}, ] +[[package]] +name = "six" +version = "1.17.0" +description = "Python 2 and 3 compatibility utilities" +optional = false +python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7" +groups = ["integration"] +files = [ + {file = "six-1.17.0-py2.py3-none-any.whl", hash = "sha256:4721f391ed90541fddacab5acf947aa0d3dc7d27b2e1e8eda2be8970586c3274"}, + {file = "six-1.17.0.tar.gz", hash = "sha256:ff70335d468e7eb6ec65b95b99d3a2836546063f63acc5171de367e834932a81"}, +] + [[package]] name = "sniffio" version = "1.3.1" @@ -960,4 +987,4 @@ type = ["pytest-mypy"] [metadata] lock-version = "2.1" python-versions = "^3.12" -content-hash = "9721ba0790a1a564baa26313d5d1385a916ff9e9a510dd00c8b559b14247d55a" +content-hash = "f2a6e74276e2fa70da78db10de6e45c0c8047c900b1faf7ec3564f7d5da28c21" diff --git a/pyproject.toml b/pyproject.toml index 6b0ae59..73fc9d9 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -51,6 +51,7 @@ allure-pytest-default-results = "^0.1.2" data-platform-helpers = ">=0.1.7" jubilant = "^1.6.0" valkey-glide = { git = "https://github.com/skourta/valkey-glide", subdirectory = "python/glide-async", branch = "add-build-rs" } +python-dateutil = "*" [tool.coverage.run] branch = true diff --git a/src/charm.py b/src/charm.py index a4fbd01..075735a 100755 --- a/src/charm.py +++ b/src/charm.py @@ -60,6 +60,7 @@ def _on_start(self, event: ops.StartEvent) -> None: event.defer() return + self.config_manager.update_local_valkey_admin() self.config_manager.set_config_properties() self.config_manager.set_acl_file() self.config_manager.set_sentinel_config_properties() diff --git a/src/core/models.py b/src/core/models.py index fbfdcfe..8b6e942 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -42,6 +42,7 @@ class PeerAppModel(PeerModel): class PeerUnitModel(PeerModel): """Model for the peer unit data.""" + charmed_operator_password: InternalUsersSecret = Field(default="") started: bool = Field(default=False) hostname: str = Field(default="") private_ip: str = Field(default="") @@ -118,6 +119,13 @@ def is_started(self) -> bool: """Check if the unit has started.""" return self.model.started if self.model else False + @property + def valkey_admin_password(self) -> str: + """Retrieve the password for the valkey admin user.""" + if not self.model: + return "" + return self.model.charmed_operator_password or "" + @final class ValkeyCluster(RelationState): diff --git a/src/events/base_events.py b/src/events/base_events.py index e90ed49..7ddf253 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -106,6 +106,8 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: for user in CharmUsers } ) + # update local unit admin password + self.charm.config_manager.update_local_valkey_admin() self.charm.config_manager.set_acl_file() def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: @@ -138,6 +140,8 @@ def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: self.charm.config_manager.set_acl_file() self.charm.cluster_manager.reload_acl_file() self.charm.cluster_manager.update_primary_auth() + # update the local unit admin password to match the leader + self.charm.config_manager.update_local_valkey_admin() except (ValkeyACLLoadError, ValkeyConfigSetError) as e: logger.error(e) self.charm.status.set_running_status( @@ -175,7 +179,7 @@ def _update_internal_users_password(self, secret_id: str) -> None: secret_id (str): The id of the secret containing the internal users' passwords. """ try: - secret_content = self.charm.state.get_secret_from_id(secret_id) + secret_content = self.charm.state.get_secret_from_id(secret_id, refresh=True) except (ops.ModelError, ops.SecretNotFoundError) as e: logger.error(e) self.charm.status.set_running_status( @@ -229,6 +233,8 @@ def _update_internal_users_password(self, secret_id: str) -> None: for user in CharmUsers } ) + # update the local unit admin password + self.charm.config_manager.update_local_valkey_admin() except (ValkeyACLLoadError, ValkeyConfigSetError) as e: logger.error(e) self.charm.status.set_running_status( diff --git a/src/managers/config.py b/src/managers/config.py index f6a3d5f..3288376 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -200,6 +200,19 @@ def generate_password(self) -> str: """ return "".join([secrets.choice(string.ascii_letters + string.digits) for _ in range(32)]) + def update_local_valkey_admin(self) -> None: + """Update the local unit's valkey admin password in the state.""" + if not ( + app_password := self.state.cluster.internal_users_credentials.get( + CharmUsers.VALKEY_ADMIN.value + ) + ): + logger.warning("No valkey admin password found to update local unit state") + return + self.state.unit_server.update( + {f"{CharmUsers.VALKEY_ADMIN.value.replace('-', '_')}_password": app_password} + ) + def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the config manager's statuses.""" status_list: list[StatusObject] = [] diff --git a/tests/integration/k8s/helpers.py b/tests/integration/k8s/helpers.py index 52bf28f..9416045 100644 --- a/tests/integration/k8s/helpers.py +++ b/tests/integration/k8s/helpers.py @@ -4,13 +4,14 @@ import contextlib import logging -from enum import Enum +from datetime import datetime, timedelta from pathlib import Path from typing import List import jubilant import yaml from data_platform_helpers.advanced_statuses.models import StatusObject +from dateutil.parser import parse from glide import GlideClient, GlideClientConfiguration, NodeAddress, ServerCredentials from ops import SecretNotFoundError, StatusBase @@ -33,16 +34,6 @@ ) -class CharmStatuses(Enum): - """List all StatusObjects here that are checked against in the integration tests.""" - - SECRET_ACCESS_ERROR = StatusObject( - status="blocked", - message="Cannot access configured secret, check permissions", - running="async", - ) - - def does_status_match( model_status: jubilant.Status, expected_unit_statuses: dict[str, List[StatusObject]] | None = None, @@ -127,8 +118,66 @@ def does_message_match(expected_status_message: str, status: StatusObject) -> bo return False +def are_apps_active_and_agents_idle( + status: jubilant.Status, + *apps: str, + idle_period: int = 0, + unit_count: int | dict[str, int] | None = None, +) -> bool: + """Check that all given apps are active, their agents idle (optional idle interval too) and optionally verify unit count as well. + + Args: + status: represents the jubilant model's current status + apps: A list of applications whose statuses to test against + idle_period: Seconds to wait for the agents of each application unit to be idle. + unit_count: The desired number of units to wait for, can be > to 0. + If set as int, this value is expected for all apps but if more granularity is needed, + pass a dictionary such as: {"app1": 2, "app2": 1, ...}, if set to -1, the check + only happens at the application level. + """ + return ( + jubilant.all_active(status, *apps) + and jubilant.all_agents_idle(status, *apps) + and _check_apps_idle_period(status, *apps, idle_period=idle_period) + and verify_unit_count(status, *apps, unit_count=unit_count) + ) + + +def are_agents_idle( + status: jubilant.Status, + *apps: str, + idle_period: int = 0, + unit_count: int | dict[str, int] | None = None, +) -> bool: + """Check that agents of all given apps are idle (optional idle interval too). Optionally verify unit count as well. + + Args: + status: represents the jubilant model's current status + apps: A list of applications whose statuses to test against + idle_period: Seconds to wait for the agents of each application unit to be idle. + unit_count: The desired number of units to wait for, should be > 0. + If set as int, this value is expected for all apps but if more granularity is needed, + pass a dictionary such as: {"app1": 2, "app2": 1, ...}, if set to -1, the check + only happens at the application level. + """ + return ( + jubilant.all_agents_idle(status, *apps) + and _check_apps_idle_period(status, *apps, idle_period=idle_period) + and verify_unit_count(status, *apps, unit_count=unit_count) + ) + + +def _check_apps_idle_period(status: jubilant.Status, *apps: str, idle_period: int) -> bool: + return all( + parse(unit.juju_status.since, ignoretz=True) + timedelta(seconds=idle_period) + < datetime.now() + for app in apps + for unit in status.get_units(app).values() + ) + + def verify_unit_count( - status: jubilant.Status, *apps: str, unit_count: int | dict[str, int] = None + status: jubilant.Status, *apps: str, unit_count: int | dict[str, int] | None = None ): """Verify the unit count for an application. diff --git a/tests/integration/k8s/test_charm.py b/tests/integration/k8s/test_charm.py index 0ca8fa9..bab7cea 100644 --- a/tests/integration/k8s/test_charm.py +++ b/tests/integration/k8s/test_charm.py @@ -2,7 +2,6 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. import logging -from time import sleep import jubilant import pytest @@ -11,13 +10,13 @@ INTERNAL_USERS_PASSWORD_CONFIG, CharmUsers, ) -from statuses import ClusterStatuses +from statuses import CharmStatuses, ClusterStatuses from .helpers import ( APP_NAME, IMAGE_RESOURCE, INTERNAL_USERS_SECRET_LABEL, - CharmStatuses, + are_apps_active_and_agents_idle, create_valkey_client, does_status_match, fast_forward, @@ -30,8 +29,7 @@ logger = logging.getLogger(__name__) -# TODO scale up when scaling is implemented -NUM_UNITS = 1 +NUM_UNITS = 3 TEST_KEY = "test_key" TEST_VALUE = "test_value" @@ -41,10 +39,7 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: """Build the charm-under-test and deploy it with three units.""" juju.deploy(charm, resources=IMAGE_RESOURCE, num_units=NUM_UNITS) juju.wait( - lambda status: does_status_match( - status, - expected_app_statuses={APP_NAME: [CharmStatuses.SCALING_NOT_IMPLEMENTED.value]}, - ), + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), timeout=600, ) @@ -82,7 +77,10 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: set_password(juju, new_password) # wait for config-changed hook to finish executing - juju.wait(lambda status: jubilant.all_agents_idle(status, APP_NAME), timeout=1200) + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), + timeout=1200, + ) # perform read operation with the updated password result = await set_key( @@ -98,7 +96,10 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: juju.config(app=APP_NAME, reset=[INTERNAL_USERS_PASSWORD_CONFIG]) # wait for config-changed hook to finish executing - juju.wait(lambda status: jubilant.all_agents_idle(status, APP_NAME), timeout=1200) + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), + timeout=1200, + ) # make sure we can still read data with the previously set password assert await get_key( @@ -129,7 +130,10 @@ async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None set_password(juju, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) # wait for config-changed hook to finish executing - juju.wait(lambda status: jubilant.all_agents_idle(status, APP_NAME), timeout=1200) + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), + timeout=1200, + ) # perform read operation with the updated password result = await set_key( @@ -169,19 +173,10 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: # deferred `config_changed` event will be retried before `update_status` with fast_forward(juju): juju.grant_secret(identifier=secret_name, app=APP_NAME) - sleep(20) # allow some time for the permission to propagate - - # juju.wait( - # lambda status: jubilant.all_active(status, APP_NAME), - # timeout=1200, - # ) - juju.wait( - lambda status: does_status_match( - status, - expected_app_statuses={APP_NAME: [CharmStatuses.SCALING_NOT_IMPLEMENTED.value]}, - ), - timeout=600, - ) + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), + timeout=1200, + ) # perform read operation with the updated password assert await get_key( From 577171ec6e14b823eecbce34223cefbaf4922274 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 30 Jan 2026 06:38:33 +0000 Subject: [PATCH 040/282] fix unit tests --- tests/unit/test_charm.py | 32 +++++++++++++++++--------------- 1 file changed, 17 insertions(+), 15 deletions(-) diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index ac00ba0..596183e 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -8,7 +8,7 @@ import yaml from ops import ActiveStatus, pebble, testing -from common.exceptions import ValkeyACLLoadError +from common.exceptions import ValkeyExecCommandError from src.charm import ValkeyCharm from src.literals import ( INTERNAL_USERS_PASSWORD_CONFIG, @@ -356,13 +356,11 @@ def test_config_changed_leader_unit(): with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("common.client.ValkeyClient.reload_acl") as mock_load_acl, - patch("common.client.ValkeyClient.set_runtime_config") as mock_set_runtime_config, + patch("workload_k8s.ValkeyK8sWorkload.exec_command") as mocl_exec_command, ): state_out = ctx.run(ctx.on.config_changed(), state_in) mock_set_acl_file.assert_called_once() - mock_load_acl.assert_called_once() - mock_set_runtime_config.assert_called_once() + assert mocl_exec_command.call_count == 2 # one for acl load, one for primaryauth set secret_out = state_out.get_secret( label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" ) @@ -392,13 +390,13 @@ def test_config_changed_leader_unit_primary(): with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("common.client.ValkeyClient.reload_acl") as mock_load_acl, - patch("common.client.ValkeyClient.set_runtime_config") as mock_set_runtime_config, + patch("workload_k8s.ValkeyK8sWorkload.exec_command") as mock_exec_command, ): state_out = ctx.run(ctx.on.config_changed(), state_in) mock_set_acl_file.assert_called_once() - mock_load_acl.assert_called_once() - mock_set_runtime_config.assert_not_called() + mock_exec_command.assert_called_once_with( + ["acl", "load"], username=CharmUsers.VALKEY_ADMIN.value, password="" + ) secret_out = state_out.get_secret( label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" ) @@ -462,12 +460,14 @@ def test_change_password_secret_changed_non_leader_unit(): "events.base_events.BaseEvents._update_internal_users_password" ) as mock_update_password, patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("common.client.ValkeyClient.reload_acl") as mock_reload_acl, + patch("workload_k8s.ValkeyK8sWorkload.exec_command") as mock_exec_command, ): ctx.run(ctx.on.secret_changed(password_secret), state_in) mock_update_password.assert_not_called() mock_set_acl_file.assert_called_once() - mock_reload_acl.assert_called_once() + mock_exec_command.assert_called_once_with( + ["acl", "load"], username=CharmUsers.VALKEY_ADMIN.value, password="" + ) def test_change_password_secret_changed_non_leader_unit_not_successful(): @@ -495,16 +495,18 @@ def test_change_password_secret_changed_non_leader_unit_not_successful(): ) as mock_update_password, patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, patch( - "common.client.ValkeyClient.reload_acl", - side_effect=ValkeyACLLoadError("Reload failed"), - ) as mock_reload_acl, + "workload_k8s.ValkeyK8sWorkload.exec_command", + side_effect=ValkeyExecCommandError("Failed to execute command"), + ) as mock_exec_command, ctx(ctx.on.secret_changed(password_secret), state_in) as manager, ): charm: ValkeyCharm = manager.charm state_out = manager.run() mock_update_password.assert_not_called() mock_set_acl_file.assert_called_once() - mock_reload_acl.assert_called_once() + mock_exec_command.assert_called_once_with( + ["acl", "load"], username=CharmUsers.VALKEY_ADMIN.value, password="" + ) cluster_statuses = charm.state.statuses.get( scope="unit", component=charm.cluster_manager.name, From c74a27ac5fe98ff6aa5db90e866aa93799ad4fd7 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 30 Jan 2026 10:42:44 +0000 Subject: [PATCH 041/282] switch away from glide for integration tests --- poetry.lock | 28 ++++++++-- pyproject.toml | 2 +- tests/integration/k8s/helpers.py | 77 +++++++++++--------------- tests/integration/k8s/test_charm.py | 86 +++++++++++++---------------- 4 files changed, 95 insertions(+), 98 deletions(-) diff --git a/poetry.lock b/poetry.lock index b2873ab..6cfc71c 100644 --- a/poetry.lock +++ b/poetry.lock @@ -66,7 +66,7 @@ version = "4.12.1" description = "High-level concurrency and networking framework on top of asyncio or Trio" optional = false python-versions = ">=3.9" -groups = ["main", "integration"] +groups = ["main"] files = [ {file = "anyio-4.12.1-py3-none-any.whl", hash = "sha256:d405828884fc140aa80a3c667b8beed277f1dfedec42ba031bd6ac3db606ab6c"}, {file = "anyio-4.12.1.tar.gz", hash = "sha256:41cfcc3a4c85d3f05c932da7c26d0201ac36f72abd4435ba90d0464a3ffed703"}, @@ -269,7 +269,7 @@ version = "3.11" description = "Internationalized Domain Names in Applications (IDNA)" optional = false python-versions = ">=3.8" -groups = ["main", "integration"] +groups = ["main"] files = [ {file = "idna-3.11-py3-none-any.whl", hash = "sha256:771a87f49d9defaf64091e6e6fe9c18d4833f140bd19464795bc32d966ca37ea"}, {file = "idna-3.11.tar.gz", hash = "sha256:795dafcc9c04ed0c1fb032c2aa73654d8e8c5023a7df64a53f39190ada629902"}, @@ -468,7 +468,7 @@ version = "6.33.4" description = "" optional = false python-versions = ">=3.9" -groups = ["main", "integration"] +groups = ["main"] files = [ {file = "protobuf-6.33.4-cp310-abi3-win32.whl", hash = "sha256:918966612c8232fc6c24c78e1cd89784307f5814ad7506c308ee3cf86662850d"}, {file = "protobuf-6.33.4-cp310-abi3-win_amd64.whl", hash = "sha256:8f11ffae31ec67fc2554c2ef891dcb561dae9a2a3ed941f9e134c2db06657dbc"}, @@ -892,7 +892,7 @@ version = "1.3.1" description = "Sniff out which async library your code is running under" optional = false python-versions = ">=3.7" -groups = ["main", "integration"] +groups = ["main"] files = [ {file = "sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2"}, {file = "sniffio-1.3.1.tar.gz", hash = "sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc"}, @@ -925,13 +925,29 @@ files = [ [package.dependencies] typing-extensions = ">=4.12.0" +[[package]] +name = "valkey" +version = "6.1.1" +description = "Python client for Valkey forked from redis-py" +optional = false +python-versions = ">=3.9" +groups = ["integration"] +files = [ + {file = "valkey-6.1.1-py3-none-any.whl", hash = "sha256:e2691541c6e1503b53c714ad9a35551ac9b7c0bbac93865f063dbc859a46de92"}, + {file = "valkey-6.1.1.tar.gz", hash = "sha256:5880792990c6c2b5eb604a5ed5f98f300880b6dd92d123819b66ed54bb259731"}, +] + +[package.extras] +libvalkey = ["libvalkey (>=4.0.1)"] +ocsp = ["cryptography (>=36.0.1)", "pyopenssl (==23.2.1)", "requests (>=2.31.0)"] + [[package]] name = "valkey-glide" version = "0.0.0" description = "Valkey GLIDE Async client. Supports Valkey and Redis OSS." optional = false python-versions = ">=3.9" -groups = ["main", "integration"] +groups = ["main"] files = [] develop = false @@ -987,4 +1003,4 @@ type = ["pytest-mypy"] [metadata] lock-version = "2.1" python-versions = "^3.12" -content-hash = "f2a6e74276e2fa70da78db10de6e45c0c8047c900b1faf7ec3564f7d5da28c21" +content-hash = "abc38cad6a46313a8cc9e71a9c82b52e2e0b14e76247ccd11bec2cffdef18876" diff --git a/pyproject.toml b/pyproject.toml index 73fc9d9..ab475bf 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -50,8 +50,8 @@ allure-pytest = "*" allure-pytest-default-results = "^0.1.2" data-platform-helpers = ">=0.1.7" jubilant = "^1.6.0" -valkey-glide = { git = "https://github.com/skourta/valkey-glide", subdirectory = "python/glide-async", branch = "add-build-rs" } python-dateutil = "*" +valkey = "^6.1.1" [tool.coverage.run] branch = true diff --git a/tests/integration/k8s/helpers.py b/tests/integration/k8s/helpers.py index 9416045..64aeb4b 100644 --- a/tests/integration/k8s/helpers.py +++ b/tests/integration/k8s/helpers.py @@ -9,10 +9,10 @@ from typing import List import jubilant +import valkey import yaml from data_platform_helpers.advanced_statuses.models import StatusObject from dateutil.parser import parse -from glide import GlideClient, GlideClientConfiguration, NodeAddress, ServerCredentials from ops import SecretNotFoundError, StatusBase from literals import ( @@ -229,31 +229,23 @@ def get_secret_by_label(juju: jubilant.Juju, label: str) -> dict[str, str]: raise SecretNotFoundError(f"Secret with label {label} not found") -async def create_valkey_client( - hostnames: list[str], +def create_valkey_client( + hostname: str, username: str | None = CharmUsers.VALKEY_ADMIN.value, password: str | None = None, -): +) -> valkey.Valkey: """Create and return a Valkey client connected to the cluster. Args: - hostnames: List of hostnames of the Valkey cluster nodes. + hostname: The hostname of the Valkey cluster node. username: The username for authentication. password: The password for the internal user. Returns: A Valkey client instance connected to the cluster. """ - addresses = [NodeAddress(host=host, port=CLIENT_PORT) for host in hostnames] - - credentials = None - if username or password: - credentials = ServerCredentials(username=username, password=password) - client_config = GlideClientConfiguration( - addresses, - credentials=credentials, - ) - return await GlideClient.create(client_config) + client = valkey.Valkey(host=hostname, port=CLIENT_PORT, username=username, password=password) + return client def set_password( @@ -287,35 +279,6 @@ def set_password( juju.config(app=application, values={INTERNAL_USERS_PASSWORD_CONFIG: secret_id}) -async def set_key( - hostnames: list[str], username: str, password: str, key: str, value: str -) -> bytes | None: - """Write a key-value pair to the Valkey cluster. - - Args: - hostnames: List of hostnames of the Valkey cluster nodes. - key: The key to write. - value: The value to write. - username: The username for authentication. - password: The password for authentication. - """ - client = await create_valkey_client(hostnames=hostnames, username=username, password=password) - return await client.set(key, value) - - -async def get_key(hostnames: list[str], username: str, password: str, key: str) -> bytes | None: - """Read a value from the Valkey cluster by key. - - Args: - hostnames: List of hostnames of the Valkey cluster nodes. - key: The key to read. - username: The username for authentication. - password: The password for authentication. - """ - client = await create_valkey_client(hostnames=hostnames, username=username, password=password) - return await client.get(key) - - @contextlib.contextmanager def fast_forward(juju: jubilant.Juju): """Context manager that temporarily speeds up update-status hooks to fire every 10s.""" @@ -325,3 +288,29 @@ def fast_forward(juju: jubilant.Juju): yield finally: juju.model_config({"update-status-hook-interval": old}) + + +def get_primary_ip(juju: jubilant.Juju, app: str) -> str: + """Get the primary node of the Valkey cluster. + + Returns: + The IP address of the primary node. + """ + hostnames = get_cluster_hostnames(juju, app) + client = create_valkey_client(hostname=hostnames[0], password=get_password(juju)) + info = client.info("replication") + return hostnames[0] if info["role"] == "master" else info.get("master_host", "") + + +def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN) -> str: + """Retrieve the password for a given internal user from Juju secrets. + + Args: + juju: The Juju client instance. + user: The internal user whose password to retrieve. + + Returns: + The password for the specified internal user. + """ + secret = get_secret_by_label(juju, label=INTERNAL_USERS_SECRET_LABEL) + return secret.get(f"{user.value}-password", "") diff --git a/tests/integration/k8s/test_charm.py b/tests/integration/k8s/test_charm.py index bab7cea..9ca570b 100644 --- a/tests/integration/k8s/test_charm.py +++ b/tests/integration/k8s/test_charm.py @@ -5,6 +5,7 @@ import jubilant import pytest +from valkey import AuthenticationError from literals import ( INTERNAL_USERS_PASSWORD_CONFIG, @@ -15,15 +16,13 @@ from .helpers import ( APP_NAME, IMAGE_RESOURCE, - INTERNAL_USERS_SECRET_LABEL, are_apps_active_and_agents_idle, create_valkey_client, does_status_match, fast_forward, get_cluster_hostnames, - get_key, - get_secret_by_label, - set_key, + get_password, + get_primary_ip, set_password, ) @@ -47,31 +46,28 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: @pytest.mark.abort_on_fail async def test_authentication(juju: jubilant.Juju) -> None: """Assert that we can authenticate to valkey.""" + primary = get_primary_ip(juju, APP_NAME) hostnames = get_cluster_hostnames(juju, APP_NAME) # try without authentication - with pytest.raises(Exception) as exc_info: - unauth_client = await create_valkey_client( - hostnames=hostnames, username=None, password=None - ) + with pytest.raises(AuthenticationError): + unauth_client = create_valkey_client(hostname=primary, username=None, password=None) await unauth_client.ping() - assert "NOAUTH" in str(exc_info.value), "Unauthenticated access did not fail as expected" # Authenticate with internal user - secret = get_secret_by_label(juju, label=INTERNAL_USERS_SECRET_LABEL) - password = secret.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") + password = get_password(juju, user=CharmUsers.VALKEY_ADMIN) assert password is not None, "Admin password secret not found" - client = await create_valkey_client(hostnames=hostnames, password=password) - auth_result = await client.ping() - assert auth_result == b"PONG", "Authentication to Valkey cluster failed" + for hostname in hostnames: + client = create_valkey_client(hostname=hostname, password=password) + assert client.ping() is True, ( + f"Authentication to Valkey cluster failed for host {hostname}" + ) @pytest.mark.abort_on_fail async def test_update_admin_password(juju: jubilant.Juju) -> None: """Assert the admin password is updated when adding a user secret to the config.""" - hostnames = get_cluster_hostnames(juju, APP_NAME) - # create a user secret and grant it to the application new_password = "some-password" set_password(juju, new_password) @@ -81,16 +77,15 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), timeout=1200, ) + primary = get_primary_ip(juju, APP_NAME) + client = create_valkey_client( + hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + ) + assert client.ping() is True, "Failed to authenticate with new admin password" - # perform read operation with the updated password - result = await set_key( - hostnames=hostnames, - username=CharmUsers.VALKEY_ADMIN.value, - password=new_password, - key=TEST_KEY, - value=TEST_VALUE, + assert client.set(TEST_KEY, TEST_VALUE) is True, ( + "Failed to write data after admin password update" ) - assert result == "OK", "Failed to write data after admin password update" # update the config again and remove the option `admin-password` juju.config(app=APP_NAME, reset=[INTERNAL_USERS_PASSWORD_CONFIG]) @@ -102,19 +97,14 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: ) # make sure we can still read data with the previously set password - assert await get_key( - hostnames=hostnames, - username=CharmUsers.VALKEY_ADMIN.value, - password=new_password, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8") + assert client.get(TEST_KEY) == bytes(TEST_VALUE, "utf-8"), ( + "Failed to read data after admin password update" + ) @pytest.mark.abort_on_fail async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None: """Assert the admin password is updated when adding a user secret to the config.""" - hostnames = get_cluster_hostnames(juju, APP_NAME) - # create a user secret and grant it to the application new_password = "some-password" set_password(juju, username="wrong-username", password=new_password) @@ -136,21 +126,19 @@ async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None ) # perform read operation with the updated password - result = await set_key( - hostnames=hostnames, - username=CharmUsers.VALKEY_ADMIN.value, - password=new_password, - key=TEST_KEY, - value=TEST_VALUE, + primary = get_primary_ip(juju, APP_NAME) + client = create_valkey_client( + hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + ) + assert client.ping() is True, "Failed to authenticate with new admin password" + assert client.set(TEST_KEY, TEST_VALUE) is True, ( + "Failed to write data after admin password update" ) - assert result == "OK", "Failed to write data after admin password update" @pytest.mark.abort_on_fail async def test_user_secret_permissions(juju: jubilant.Juju) -> None: """If a user secret is not granted, ensure we can process updated permissions.""" - hostnames = get_cluster_hostnames(juju, APP_NAME) - logger.info("Creating new user secret") secret_name = "my_secret" new_password = "even-newer-password" @@ -179,12 +167,16 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: ) # perform read operation with the updated password - assert await get_key( - hostnames=hostnames, - username=CharmUsers.VALKEY_ADMIN.value, - password=new_password, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data after secret permissions were updated" + primary = get_primary_ip(juju, APP_NAME) + client = create_valkey_client( + hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + ) + assert client.ping() is True, ( + "Failed to authenticate with new admin password after secret access" + ) + assert client.get(TEST_KEY) == bytes(TEST_VALUE, "utf-8"), ( + "Failed to read data after secret permissions were updated" + ) logger.info("Password update successful after secret was granted") From 2f00f1f4775e60c7225fbe588cb137f82e7330f0 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 30 Jan 2026 11:03:26 +0000 Subject: [PATCH 042/282] add replica password change and check on all units --- tests/integration/k8s/test_charm.py | 60 ++++++++++++++++++++++++----- 1 file changed, 50 insertions(+), 10 deletions(-) diff --git a/tests/integration/k8s/test_charm.py b/tests/integration/k8s/test_charm.py index 9ca570b..5a3d552 100644 --- a/tests/integration/k8s/test_charm.py +++ b/tests/integration/k8s/test_charm.py @@ -96,10 +96,16 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: timeout=1200, ) - # make sure we can still read data with the previously set password - assert client.get(TEST_KEY) == bytes(TEST_VALUE, "utf-8"), ( - "Failed to read data after admin password update" - ) + for hostname in get_cluster_hostnames(juju, APP_NAME): + client = create_valkey_client( + hostname=hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + ) + assert client.ping() is True, ( + f"Failed to authenticate with admin password after removing user secret on host {hostname}" + ) + assert client.get(TEST_KEY) == bytes(TEST_VALUE, "utf-8"), ( + f"Failed to read data after admin password update on host {hostname}" + ) @pytest.mark.abort_on_fail @@ -167,18 +173,52 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: ) # perform read operation with the updated password + hostnames = get_cluster_hostnames(juju, APP_NAME) primary = get_primary_ip(juju, APP_NAME) client = create_valkey_client( hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=new_password ) - assert client.ping() is True, ( - "Failed to authenticate with new admin password after secret access" - ) - assert client.get(TEST_KEY) == bytes(TEST_VALUE, "utf-8"), ( - "Failed to read data after secret permissions were updated" + assert client.ping() is True, "Failed to authenticate with new admin password" + assert client.set(TEST_KEY, TEST_VALUE) is True, ( + "Failed to write data after admin password update" ) + for hostname in hostnames: + client = create_valkey_client( + hostname=hostname, + username=CharmUsers.VALKEY_ADMIN.value, + password=new_password, + ) + assert client.ping() is True, ( + f"Failed to authenticate with new admin password on host {hostname}" + ) + assert client.get(TEST_KEY) == bytes(TEST_VALUE, "utf-8"), ( + f"Failed to read data after admin password update on host {hostname}" + ) logger.info("Password update successful after secret was granted") + # change replication password + replica_password = "replica-password" + juju.update_secret( + identifier=secret_id, + content={ + CharmUsers.VALKEY_ADMIN.value: new_password, + CharmUsers.VALKEY_REPLICA.value: replica_password, + }, + ) + + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), + timeout=1200, + ) -# TODO Once scaling is implemented, add tests to check on password update in non-leader units + # perform pings with the updated replica password + for hostname in hostnames: + client = create_valkey_client( + hostname=hostname, + username=CharmUsers.VALKEY_REPLICA.value, + password=replica_password, + ) + assert client.ping() is True, ( + f"Failed to authenticate with new replica password on host {hostname}" + ) From 827e58d728af0ebc88214f466fb9afe88c9ab5da Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 30 Jan 2026 12:26:02 +0000 Subject: [PATCH 043/282] add continuouswrites file --- poetry.lock | 18 +++- pyproject.toml | 1 + tests/integration/k8s/ha/continuous_writes.py | 87 +++++++++++++++++++ 3 files changed, 105 insertions(+), 1 deletion(-) create mode 100644 tests/integration/k8s/ha/continuous_writes.py diff --git a/poetry.lock b/poetry.lock index 6cfc71c..b460602 100644 --- a/poetry.lock +++ b/poetry.lock @@ -898,6 +898,22 @@ files = [ {file = "sniffio-1.3.1.tar.gz", hash = "sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc"}, ] +[[package]] +name = "tenacity" +version = "9.1.2" +description = "Retry code until it succeeds" +optional = false +python-versions = ">=3.9" +groups = ["integration"] +files = [ + {file = "tenacity-9.1.2-py3-none-any.whl", hash = "sha256:f77bf36710d8b73a50b2dd155c97b870017ad21afe6ab300326b0371b3b05138"}, + {file = "tenacity-9.1.2.tar.gz", hash = "sha256:1169d376c297e7de388d18b4481760d478b0e99a777cad3a9c86e556f4b697cb"}, +] + +[package.extras] +doc = ["reno", "sphinx"] +test = ["pytest", "tornado (>=4.5)", "typeguard"] + [[package]] name = "typing-extensions" version = "4.15.0" @@ -1003,4 +1019,4 @@ type = ["pytest-mypy"] [metadata] lock-version = "2.1" python-versions = "^3.12" -content-hash = "abc38cad6a46313a8cc9e71a9c82b52e2e0b14e76247ccd11bec2cffdef18876" +content-hash = "2d6ad1ccf6e7505c4b9136e91d9d970046f9ba6814866fff86c52b256a837b25" diff --git a/pyproject.toml b/pyproject.toml index ab475bf..4ae7e26 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -52,6 +52,7 @@ data-platform-helpers = ">=0.1.7" jubilant = "^1.6.0" python-dateutil = "*" valkey = "^6.1.1" +tenacity = "^9.1.2" [tool.coverage.run] branch = true diff --git a/tests/integration/k8s/ha/continuous_writes.py b/tests/integration/k8s/ha/continuous_writes.py new file mode 100644 index 0000000..7bd723a --- /dev/null +++ b/tests/integration/k8s/ha/continuous_writes.py @@ -0,0 +1,87 @@ +#!/usr/bin/env python3 +# Copyright 2025 Canonical Ltd. +# See LICENSE file for licensing details. + +import logging +import pathlib +import signal +import sys +import time + +import valkey +from tenacity import RetryError, Retrying, stop_after_attempt, wait_fixed + +SENTINEL_PORT = 26379 + +logger = logging.getLogger(__name__) + +WRITES_LAST_WRITTEN_VAL_PATH = "last_written_value" +LOG_FILE_PATH = "log_file" +continue_running = True + + +def continuous_writes( + endpoints: str, + valkey_user: str, + valkey_password: str, + sentinel_user: str, + sentinel_password: str, +) -> None: + key = "cw_key" + count = 0 + + client = valkey.Sentinel( + [(host, SENTINEL_PORT) for host in endpoints.split(",")], + username=valkey_user, + password=valkey_password, + sentinel_kwargs={"password": sentinel_password, "username": sentinel_user}, + ) + master = client.master_for("primary") + + # clean up from previous runs + pathlib.Path(WRITES_LAST_WRITTEN_VAL_PATH).unlink(missing_ok=True) + try: + master.delete(key) + except Exception: + pass + + while continue_running: + count += 1 + + try: + for attempt in Retrying(stop=stop_after_attempt(2), wait=wait_fixed(1)): + with attempt: + result = master.set(key, str(count)) + if not result: + raise ValueError + with open(LOG_FILE_PATH, "a") as log_file: + log_file.write(f"{count}\n") + except RetryError: + pass + + time.sleep(1) + else: + # write last expected written value on disk when terminating + pathlib.Path(WRITES_LAST_WRITTEN_VAL_PATH).write_text(str(count)) + + +def handle_stop_signal(signum, frame) -> None: + global continue_running + continue_running = False + + +def main(): + endpoints = sys.argv[1] + valkey_user = sys.argv[2] + valkey_password = sys.argv[3] + sentinel_user = sys.argv[4] + sentinel_password = sys.argv[5] + + # handle the stop signal for a graceful stop of the writes process + signal.signal(signal.SIGTERM, handle_stop_signal) + + continuous_writes(endpoints, valkey_user, valkey_password, sentinel_user, sentinel_password) + + +if __name__ == "__main__": + main() From 72e4b4fde5a42932af60ca5eb608d904a4126066 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 4 Feb 2026 08:38:27 +0000 Subject: [PATCH 044/282] add first integration test for scale up --- tests/integration/k8s/ha/__init__.py | 0 tests/integration/k8s/ha/helpers.py | 93 ++++++++++++++++++++ tests/integration/k8s/ha/test_scaling.py | 105 +++++++++++++++++++++++ 3 files changed, 198 insertions(+) create mode 100644 tests/integration/k8s/ha/__init__.py create mode 100644 tests/integration/k8s/ha/helpers.py create mode 100644 tests/integration/k8s/ha/test_scaling.py diff --git a/tests/integration/k8s/ha/__init__.py b/tests/integration/k8s/ha/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/tests/integration/k8s/ha/helpers.py b/tests/integration/k8s/ha/helpers.py new file mode 100644 index 0000000..4542e1d --- /dev/null +++ b/tests/integration/k8s/ha/helpers.py @@ -0,0 +1,93 @@ +#!/usr/bin/env python3 +# Copyright 2025 Canonical Ltd. +# See LICENSE file for licensing details. + +import logging +import subprocess +import time + +import valkey +from tenacity import Retrying, stop_after_attempt, wait_fixed + +from literals import CLIENT_PORT, SENTINEL_PORT + +logger = logging.getLogger(__name__) + +WRITES_LAST_WRITTEN_VAL_PATH = "last_written_value" + +KEY = "cw_key" + + +def start_continuous_writes( + endpoints: str, + valkey_user: str, + valkey_password: str, + sentinel_user: str, + sentinel_password: str, +) -> None: + """Create a subprocess instance of `continuous writes` and start writing data to etcd.""" + subprocess.Popen( + [ + "python3", + "tests/integration/k8s/ha/continuous_writes.py", + endpoints, + valkey_user, + valkey_password, + sentinel_user, + sentinel_password, + ] + ) + + +def stop_continuous_writes() -> None: + """Shut down the subprocess instance of the `continuous writes`.""" + proc = subprocess.Popen(["pkill", "-15", "-f", "continuous_writes.py"]) + proc.communicate() + + +def assert_continuous_writes_increasing( + endpoints: str, + valkey_user: str, + valkey_password: str, + sentinel_user: str, + sentinel_password: str, +) -> None: + """Assert that the continuous writes are increasing.""" + client = valkey.Sentinel( + [(host, SENTINEL_PORT) for host in endpoints.split(",")], + username=valkey_user, + password=valkey_password, + sentinel_kwargs={"password": sentinel_password, "username": sentinel_user}, + ) + master = client.master_for("primary") + writes_count = int(master.get(KEY)) + time.sleep(10) + more_writes = int(master.get(KEY)) + assert more_writes > writes_count, "Writes not continuing to DB" + logger.info("Continuous writes are increasing.") + + +def assert_continuous_writes_consistent( + endpoints: str, + valkey_user: str, + valkey_password: str, +) -> None: + """Assert that the continuous writes are consistent.""" + last_written_value = None + for attempt in Retrying(stop=stop_after_attempt(5), wait=wait_fixed(5)): + with attempt: + with open(WRITES_LAST_WRITTEN_VAL_PATH, "r") as f: + last_written_value = int(f.read().rstrip()) + + for endpoint in endpoints.split(","): + client = valkey.Valkey( + host=endpoint, + port=CLIENT_PORT, + username=valkey_user, + password=valkey_password, + ) + last_etcd_value = int(client.get(KEY).decode("utf-8")) + assert last_written_value == last_etcd_value, ( + f"endpoint: {endpoint}, expected value: {last_written_value}, current value: {last_etcd_value}" + ) + logger.info(f"Continuous writes are consistent on {endpoint}.") diff --git a/tests/integration/k8s/ha/test_scaling.py b/tests/integration/k8s/ha/test_scaling.py new file mode 100644 index 0000000..23850d0 --- /dev/null +++ b/tests/integration/k8s/ha/test_scaling.py @@ -0,0 +1,105 @@ +#!/usr/bin/env python3 +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. +import logging + +import jubilant +import pytest +import valkey + +from literals import CharmUsers + +from ..helpers import ( + APP_NAME, + IMAGE_RESOURCE, + are_apps_active_and_agents_idle, + get_cluster_hostnames, + get_password, +) +from .helpers import ( + assert_continuous_writes_consistent, + assert_continuous_writes_increasing, + start_continuous_writes, + stop_continuous_writes, +) + +logger = logging.getLogger(__name__) + +NUM_UNITS = 3 +TEST_KEY = "test_key" +TEST_VALUE = "test_value" + + +@pytest.mark.abort_on_fail +def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: + """Build the charm-under-test and deploy it with three units.""" + juju.deploy(charm, resources=IMAGE_RESOURCE, num_units=1) + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), + timeout=600, + ) + + assert len(juju.status().apps[APP_NAME].units) == 1, ( + "Unexpected number of units after initial deploy" + ) + + +@pytest.mark.abort_on_fail +async def test_scale_up(juju: jubilant.Juju) -> None: + """Make sure new units are added to the etcd cluster without downtime.""" + init_units_count = len(juju.status().apps[APP_NAME].units) + init_endpoints = ",".join(get_cluster_hostnames(juju, APP_NAME)) + # start writing data to the cluster + start_continuous_writes( + endpoints=init_endpoints, + valkey_user=CharmUsers.VALKEY_ADMIN.value, + valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + sentinel_user=CharmUsers.SENTINEL_ADMIN.value, + sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_ADMIN), + ) + + # scale up + juju.add_unit(APP_NAME, num_units=2) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, idle_period=10, unit_count=init_units_count + 2 + ), + timeout=1200, + ) + num_units = len(juju.status().apps[APP_NAME].units) + assert num_units == init_units_count + 2, ( + f"Expected {init_units_count + 2} units, got {num_units}." + ) + + # check if all units have been added to the cluster + endpoints = ",".join(get_cluster_hostnames(juju, APP_NAME)) + + sentinel_client = valkey.Sentinel( + [(host, 26379) for host in endpoints.split(",")], + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + sentinel_kwargs={ + "password": get_password(juju, user=CharmUsers.SENTINEL_ADMIN), + "username": CharmUsers.SENTINEL_ADMIN.value, + }, + ) + master = sentinel_client.master_for("primary") + info = master.info("replication") + connected_slaves = info.get("connected_slaves", 0) + assert connected_slaves == num_units - 1, ( + f"Expected {num_units - 1} connected slaves, got {connected_slaves}." + ) + + assert_continuous_writes_increasing( + endpoints=endpoints, + valkey_user=CharmUsers.VALKEY_ADMIN.value, + valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + sentinel_user=CharmUsers.SENTINEL_ADMIN.value, + sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_ADMIN), + ) + stop_continuous_writes() + assert_continuous_writes_consistent( + endpoints=endpoints, + valkey_user=CharmUsers.VALKEY_ADMIN.value, + valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) From 38923b1b9d6160e29f33542da5c461d60f3525ce Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 4 Feb 2026 08:43:19 +0000 Subject: [PATCH 045/282] add scaling spread file --- tests/spread/test_charm.py/task.yaml | 2 +- tests/spread/test_scaling.py/task.yaml | 9 +++++++++ 2 files changed, 10 insertions(+), 1 deletion(-) create mode 100644 tests/spread/test_scaling.py/task.yaml diff --git a/tests/spread/test_charm.py/task.yaml b/tests/spread/test_charm.py/task.yaml index e4b01a9..81aee01 100644 --- a/tests/spread/test_charm.py/task.yaml +++ b/tests/spread/test_charm.py/task.yaml @@ -6,4 +6,4 @@ systems: execute: | tox run -e integration -- "tests/integration/k8s/$TEST_MODULE" --alluredir="$SPREAD_TASK/allure-results" artifacts: - - allure-results \ No newline at end of file + - allure-results diff --git a/tests/spread/test_scaling.py/task.yaml b/tests/spread/test_scaling.py/task.yaml new file mode 100644 index 0000000..a3c57af --- /dev/null +++ b/tests/spread/test_scaling.py/task.yaml @@ -0,0 +1,9 @@ +summary: test_scaling.py +environment: + TEST_MODULE: ha/test_scaling.py +systems: + - self-hosted-linux-amd64-noble-medium +execute: | + tox run -e integration -- "tests/integration/k8s/$TEST_MODULE" --alluredir="$SPREAD_TASK/allure-results" +artifacts: + - allure-results From c436a4a3ea757aace20d1467e2769ef0df783313 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 4 Feb 2026 09:23:50 +0000 Subject: [PATCH 046/282] mock get_private_ip --- tests/unit/test_charm.py | 1 + 1 file changed, 1 insertion(+) diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 518e158..c9e57b8 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -390,6 +390,7 @@ def test_config_changed_leader_unit_primary(): patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, patch("workload_k8s.ValkeyK8sWorkload.exec_command") as mock_exec_command, + patch("core.base_workload.WorkloadBase.get_private_ip", return_value="127.0.1.1"), ): state_out = ctx.run(ctx.on.config_changed(), state_in) mock_set_acl_file.assert_called_once() From 6ea5fa29ed8e9d20b513e9d95f17ab460fbac253 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 4 Feb 2026 09:58:01 +0000 Subject: [PATCH 047/282] remove markers and etcd references --- src/literals.py | 1 - tests/integration/k8s/ha/helpers.py | 8 ++++---- tests/integration/k8s/ha/test_scaling.py | 5 +---- 3 files changed, 5 insertions(+), 9 deletions(-) diff --git a/src/literals.py b/src/literals.py index 62808f8..9a30a40 100644 --- a/src/literals.py +++ b/src/literals.py @@ -27,7 +27,6 @@ QUORUM_NUMBER = 2 INTERNAL_USERS_PASSWORD_CONFIG = "system-users" INTERNAL_USERS_SECRET_LABEL_SUFFIX = "internal_users_secret" -CLIENT_PORT = 6379 # As per the valkey users spec diff --git a/tests/integration/k8s/ha/helpers.py b/tests/integration/k8s/ha/helpers.py index 4542e1d..6cc84d9 100644 --- a/tests/integration/k8s/ha/helpers.py +++ b/tests/integration/k8s/ha/helpers.py @@ -25,7 +25,7 @@ def start_continuous_writes( sentinel_user: str, sentinel_password: str, ) -> None: - """Create a subprocess instance of `continuous writes` and start writing data to etcd.""" + """Create a subprocess instance of `continuous writes` and start writing data to valkey.""" subprocess.Popen( [ "python3", @@ -86,8 +86,8 @@ def assert_continuous_writes_consistent( username=valkey_user, password=valkey_password, ) - last_etcd_value = int(client.get(KEY).decode("utf-8")) - assert last_written_value == last_etcd_value, ( - f"endpoint: {endpoint}, expected value: {last_written_value}, current value: {last_etcd_value}" + last_value = int(client.get(KEY).decode("utf-8")) + assert last_written_value == last_value, ( + f"endpoint: {endpoint}, expected value: {last_written_value}, current value: {last_value}" ) logger.info(f"Continuous writes are consistent on {endpoint}.") diff --git a/tests/integration/k8s/ha/test_scaling.py b/tests/integration/k8s/ha/test_scaling.py index 23850d0..1f7d8b2 100644 --- a/tests/integration/k8s/ha/test_scaling.py +++ b/tests/integration/k8s/ha/test_scaling.py @@ -4,7 +4,6 @@ import logging import jubilant -import pytest import valkey from literals import CharmUsers @@ -30,7 +29,6 @@ TEST_VALUE = "test_value" -@pytest.mark.abort_on_fail def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: """Build the charm-under-test and deploy it with three units.""" juju.deploy(charm, resources=IMAGE_RESOURCE, num_units=1) @@ -44,9 +42,8 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: ) -@pytest.mark.abort_on_fail async def test_scale_up(juju: jubilant.Juju) -> None: - """Make sure new units are added to the etcd cluster without downtime.""" + """Make sure new units are added to the valkey downtime.""" init_units_count = len(juju.status().apps[APP_NAME].units) init_endpoints = ",".join(get_cluster_hostnames(juju, APP_NAME)) # start writing data to the cluster From 21e1837ee7d102ff1332bf19255040bf06b5030f Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 5 Feb 2026 06:42:29 +0000 Subject: [PATCH 048/282] fix unit tests and add some workload functions --- src/core/base_workload.py | 32 ++++++++++++++++++++++++++++++-- src/managers/cluster.py | 31 ++++++++++++++++++++++--------- src/workload_vm.py | 15 +++++++++++++-- tests/unit/test_charm.py | 30 +++++++++++++----------------- 4 files changed, 78 insertions(+), 30 deletions(-) diff --git a/src/core/base_workload.py b/src/core/base_workload.py index 0348b80..92bde4a 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -19,6 +19,15 @@ class WorkloadBase(ABC): """Base interface for common workload operations.""" + def __init__(self) -> None: + """Initialize the WorkloadBase.""" + self.root: pathops.PathProtocol + self.config_file: pathops.PathProtocol + self.sentinel_config: pathops.PathProtocol + self.acl_file: pathops.PathProtocol + self.sentinel_acl_file: pathops.PathProtocol + self.working_dir: pathops.PathProtocol + @property @abstractmethod def can_connect(self) -> bool: @@ -62,7 +71,7 @@ def get_private_ip(self) -> str: def write_file( self, content: str, - path: pathops.ContainerPath, + path: pathops.PathProtocol, mode: int | None = None, user: str | None = None, group: str | None = None, @@ -74,7 +83,7 @@ def write_file( Args: content (str): The content to be written. - path (str): The file path where the content should be written. + path (pathops.PathProtocol): The file path where the content should be written. mode (int, optional): The file mode (permissions). Defaults to None. user (str, optional): The user name. Defaults to None. group (str, optional): The group name. Defaults to None. @@ -111,3 +120,22 @@ def write_config_file(self, config: dict[str, str]) -> None: ValueError, ) as e: raise ValkeyWorkloadCommandError(e) + + def mkdir( + self, + path: pathops.PathProtocol, + mode: int = 0o755, + user: str | None = None, + group: str | None = None, + exist_ok: bool = True, + ) -> None: + """Create a directory on disk. + + Args: + path (pathops.PathProtocol): The directory path to be created. + mode (int, optional): The directory mode (permissions). Defaults to None. + user (str, optional): The user name. Defaults to None. + group (str, optional): The group name. Defaults to None. + exist_ok (bool, optional): Whether to ignore if the directory already exists. Defaults to True. + """ + path.mkdir(mode=mode, user=user, group=group, exist_ok=exist_ok) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index d37f836..837c263 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -10,7 +10,11 @@ from data_platform_helpers.advanced_statuses.protocol import ManagerStatusProtocol from data_platform_helpers.advanced_statuses.types import Scope -from common.exceptions import ValkeyACLLoadError, ValkeyConfigSetError, ValkeyExecCommandError +from common.exceptions import ( + ValkeyACLLoadError, + ValkeyConfigSetError, + ValkeyWorkloadCommandError, +) from core.base_workload import WorkloadBase from core.cluster_state import ClusterState from literals import CharmUsers @@ -36,10 +40,8 @@ def __init__(self, state: ClusterState, workload: WorkloadBase): def reload_acl_file(self) -> None: """Reload the ACL file into the cluster.""" try: - self.workload.exec_command( - ["acl", "load"], username=self.admin_user, password=self.admin_password - ) - except ValkeyExecCommandError: + self._exec_cli_command(["acl", "load"]) + except ValkeyWorkloadCommandError: raise ValkeyACLLoadError("Could not load ACL file into Valkey cluster.") def update_primary_auth(self) -> None: @@ -48,7 +50,7 @@ def update_primary_auth(self) -> None: logger.info("Current unit is primary; no need to update primaryauth") return try: - self.workload.exec_command( + self._exec_cli_command( [ "config", "set", @@ -57,13 +59,24 @@ def update_primary_auth(self) -> None: CharmUsers.VALKEY_REPLICA.value, "" ), ], - username=self.admin_user, - password=self.admin_password, ) logger.info("Updated primaryauth runtime configuration on Valkey server") - except ValkeyExecCommandError: + except ValkeyWorkloadCommandError: raise ValkeyConfigSetError("Could not set primaryauth on Valkey server.") + def _exec_cli_command(self, command: list[str]) -> str: + """Execute a Valkey CLI command on the server.""" + cli_command = [ + "valkey-cli", + "--user", + self.admin_user, + "--password", + self.admin_password, + ] + command + output = self.workload.exec(cli_command) + logger.debug("Executed command: %s, got output: %s", " ".join(command), output) + return output + def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the cluster manager's statuses.""" status_list: list[StatusObject] = self.state.statuses.get( diff --git a/src/workload_vm.py b/src/workload_vm.py index 6990851..9312b29 100644 --- a/src/workload_vm.py +++ b/src/workload_vm.py @@ -65,7 +65,7 @@ def install(self, revision: str | None = None, retry_and_raise: bool = True) -> True if successfully installed, False if errors occur and `retry_and_raise` is False. """ if not revision: - revision = SNAP_REVISION + revision = str(SNAP_REVISION) try: # as long as 26.04 is not stable, we need to install the core26 snap from edge @@ -99,6 +99,17 @@ def exec(self, command: List[str]) -> str: ).stdout.strip() logger.debug(output) return output - except (subprocess.CalledProcessError, subprocess.TimeoutExpired) as e: + except subprocess.CalledProcessError as e: logger.error("Command failed with %s, %s", e.returncode, e.stderr) raise ValkeyWorkloadCommandError(e) + except subprocess.TimeoutExpired as e: + logger.error("Command '%s' timed out: %s", command, str(e.stderr)) + raise ValkeyWorkloadCommandError(e) + + @override + def alive(self) -> bool: + """Check if the Valkey service is running.""" + try: + return bool(self.valkey.services[SNAP_SERVICE]["active"]) + except KeyError: + return False diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 286ef6f..46b6e9a 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -9,6 +9,7 @@ import yaml from ops import ActiveStatus, pebble, testing +from common.exceptions import ValkeyWorkloadCommandError from src.charm import ValkeyCharm from src.literals import ( INTERNAL_USERS_PASSWORD_CONFIG, @@ -367,11 +368,11 @@ def test_config_changed_leader_unit(cloud_spec): with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("workload_k8s.ValkeyK8sWorkload.exec_command") as mocl_exec_command, + patch("managers.cluster.ClusterManager._exec_cli_command") as mock_exec_command, ): state_out = ctx.run(ctx.on.config_changed(), state_in) mock_set_acl_file.assert_called_once() - assert mocl_exec_command.call_count == 2 # one for acl load, one for primaryauth set + assert mock_exec_command.call_count == 2 # one for acl load, one for primaryauth set secret_out = state_out.get_secret( label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" ) @@ -381,8 +382,8 @@ def test_config_changed_leader_unit(cloud_spec): ) -def test_config_changed_leader_unit_primary(): - ctx = testing.Context(ValkeyCharm) +def test_config_changed_leader_unit_primary(cloud_spec): + ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, local_app_data={"primary_ip": "127.0.1.1"} ) @@ -398,18 +399,17 @@ def test_config_changed_leader_unit_primary(): containers={container}, secrets={password_secret}, config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("workload_k8s.ValkeyK8sWorkload.exec_command") as mock_exec_command, + patch("managers.cluster.ClusterManager._exec_cli_command") as mock_exec_command, patch("core.base_workload.WorkloadBase.get_private_ip", return_value="127.0.1.1"), ): state_out = ctx.run(ctx.on.config_changed(), state_in) mock_set_acl_file.assert_called_once() - mock_exec_command.assert_called_once_with( - ["acl", "load"], username=CharmUsers.VALKEY_ADMIN.value, password="" - ) + mock_exec_command.assert_called_once_with(["acl", "load"]) secret_out = state_out.get_secret( label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" ) @@ -475,14 +475,12 @@ def test_change_password_secret_changed_non_leader_unit(cloud_spec): "events.base_events.BaseEvents._update_internal_users_password" ) as mock_update_password, patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("workload_k8s.ValkeyK8sWorkload.exec_command") as mock_exec_command, + patch("managers.cluster.ClusterManager._exec_cli_command") as mock_exec_command, ): ctx.run(ctx.on.secret_changed(password_secret), state_in) mock_update_password.assert_not_called() mock_set_acl_file.assert_called_once() - mock_exec_command.assert_called_once_with( - ["acl", "load"], username=CharmUsers.VALKEY_ADMIN.value, password="" - ) + mock_exec_command.assert_called_once_with(["acl", "load"]) def test_change_password_secret_changed_non_leader_unit_not_successful(cloud_spec): @@ -511,8 +509,8 @@ def test_change_password_secret_changed_non_leader_unit_not_successful(cloud_spe ) as mock_update_password, patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, patch( - "workload_k8s.ValkeyK8sWorkload.exec_command", - side_effect=ValkeyExecCommandError("Failed to execute command"), + "managers.cluster.ClusterManager._exec_cli_command", + side_effect=ValkeyWorkloadCommandError("Failed to execute command"), ) as mock_exec_command, ctx(ctx.on.secret_changed(password_secret), state_in) as manager, ): @@ -520,9 +518,7 @@ def test_change_password_secret_changed_non_leader_unit_not_successful(cloud_spe state_out = manager.run() mock_update_password.assert_not_called() mock_set_acl_file.assert_called_once() - mock_exec_command.assert_called_once_with( - ["acl", "load"], username=CharmUsers.VALKEY_ADMIN.value, password="" - ) + mock_exec_command.assert_called_once_with(["acl", "load"]) cluster_statuses = charm.state.statuses.get( scope="unit", component=charm.cluster_manager.name, From c48daeb6905da54cb810a348d9a22b4d99dee326 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 5 Feb 2026 06:44:01 +0000 Subject: [PATCH 049/282] add mode user and group to write file --- src/core/base_workload.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/core/base_workload.py b/src/core/base_workload.py index 92bde4a..8de6448 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -89,7 +89,7 @@ def write_file( group (str, optional): The group name. Defaults to None. """ try: - path.write_text(content) + path.write_text(content, mode=mode, user=user, group=group) except ( FileNotFoundError, LookupError, From 25d25b8f64c0c3b67a6452079750c644839659f2 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 6 Feb 2026 04:33:17 +0000 Subject: [PATCH 050/282] fix integration tests --- src/managers/cluster.py | 2 +- src/managers/config.py | 8 +------- tests/integration/k8s/ha/test_scaling.py | 6 +++--- 3 files changed, 5 insertions(+), 11 deletions(-) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 837c263..7faa038 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -70,7 +70,7 @@ def _exec_cli_command(self, command: list[str]) -> str: "valkey-cli", "--user", self.admin_user, - "--password", + "--pass", self.admin_password, ] + command output = self.workload.exec(cli_command) diff --git a/src/managers/config.py b/src/managers/config.py index c4b9453..6067712 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -17,7 +17,6 @@ from core.base_workload import WorkloadBase from core.cluster_state import ClusterState from literals import ( - ACL_FILE, CHARM_USER, CHARM_USERS_ROLE_MAP, CLIENT_PORT, @@ -83,11 +82,6 @@ def config_properties(self) -> dict[str, str]: config_properties["bind"] = self.state.bind_address else: config_properties["bind"] = "0.0.0.0 -::1" - # Use the ACL file - config_properties["aclfile"] = ACL_FILE - - # # logfile location - # config_properties["logfile"] = VALKEY_LOG_FILE logger.debug( "primary: %s, hostname: %s", @@ -191,7 +185,7 @@ def set_sentinel_acl_file(self, passwords: dict[str, str] | None = None) -> None for user in CharmUsers: # only process VALKEY users # Sentinel users should be in the sentinel acl file - if "VALKEY_" in str(user): + if "VALKEY_" in user.name: continue acl_content += self._get_user_acl_line(user, passwords=passwords) self.workload.write_file(acl_content, self.workload.sentinel_acl_file) diff --git a/tests/integration/k8s/ha/test_scaling.py b/tests/integration/k8s/ha/test_scaling.py index 1f7d8b2..d951a60 100644 --- a/tests/integration/k8s/ha/test_scaling.py +++ b/tests/integration/k8s/ha/test_scaling.py @@ -7,14 +7,14 @@ import valkey from literals import CharmUsers - -from ..helpers import ( +from tests.integration.helpers import ( APP_NAME, IMAGE_RESOURCE, are_apps_active_and_agents_idle, get_cluster_hostnames, get_password, ) + from .helpers import ( assert_continuous_writes_consistent, assert_continuous_writes_increasing, @@ -31,7 +31,7 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: """Build the charm-under-test and deploy it with three units.""" - juju.deploy(charm, resources=IMAGE_RESOURCE, num_units=1) + juju.deploy(charm, resources=IMAGE_RESOURCE, num_units=1, trust=True) juju.wait( lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), timeout=600, From e8db36c022846b47628deb40498412bf6c1cbbf8 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 9 Feb 2026 05:29:09 +0000 Subject: [PATCH 051/282] add one-by-one scaling up --- src/core/base_workload.py | 2 +- src/core/models.py | 1 + src/events/base_events.py | 131 +++++++++++++++++++++++++++++++++++--- src/managers/cluster.py | 102 ++++++++++++++++++++++++++--- src/statuses.py | 12 ++++ src/workload_k8s.py | 6 +- src/workload_vm.py | 8 +-- 7 files changed, 234 insertions(+), 28 deletions(-) diff --git a/src/core/base_workload.py b/src/core/base_workload.py index 8de6448..096cc85 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -40,7 +40,7 @@ def start(self) -> None: pass @abstractmethod - def exec(self, command: list[str]) -> str: + def exec(self, command: list[str]) -> tuple[str, str | None]: """Run a command on the workload substrate.""" pass diff --git a/src/core/models.py b/src/core/models.py index d911534..450b5ba 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -37,6 +37,7 @@ class PeerAppModel(PeerModel): charmed_sentinel_peers_password: InternalUsersSecret = Field(default="") charmed_sentinel_operator_password: InternalUsersSecret = Field(default="") primary_ip: str = Field(default="") + starting_member: str = Field(default="") class PeerUnitModel(PeerModel): diff --git a/src/events/base_events.py b/src/events/base_events.py index 5b19c53..3b7e69c 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -28,9 +28,20 @@ logger = logging.getLogger(__name__) +class UnitFullyStarted(ops.EventBase): + """Event that signals that the unit's has fully started. + + This event will be deferred until: + The Sentinel service is running and was discovered by other units. + The Valkey service is running and the replica has finished syncing data. + """ + + class BaseEvents(ops.Object): """Handle all base events.""" + unit_fully_started = ops.EventSource(UnitFullyStarted) + def __init__(self, charm: "ValkeyCharm"): super().__init__(charm, key="base_events") self.charm = charm @@ -40,10 +51,14 @@ def __init__(self, charm: "ValkeyCharm"): self.framework.observe( self.charm.on[PEER_RELATION].relation_joined, self._on_peer_relation_joined ) + self.framework.observe( + self.charm.on[PEER_RELATION].relation_changed, self._on_peer_relation_changed + ) self.framework.observe(self.charm.on.update_status, self._on_update_status) self.framework.observe(self.charm.on.leader_elected, self._on_leader_elected) self.framework.observe(self.charm.on.config_changed, self._on_config_changed) self.framework.observe(self.charm.on.secret_changed, self._on_secret_changed) + self.framework.observe(self.unit_fully_started, self._on_unit_fully_started) def _on_install(self, event: ops.InstallEvent) -> None: """Handle install event.""" @@ -63,13 +78,20 @@ def _on_start(self, event: ops.StartEvent) -> None: event.defer() return - if not self.charm.unit.is_leader() and ( - not self.charm.state.cluster.internal_users_credentials - or not self.charm.state.cluster.model.primary_ip - ): - logger.info("Deferring leader write primary and internal user credentials") - event.defer() - return + if not self.charm.unit.is_leader(): + if ( + not self.charm.state.cluster.internal_users_credentials + or not self.charm.state.cluster.model.primary_ip + ): + logger.info( + "Non-leader unit waiting for leader to set primary and internal user credentials" + ) + event.defer() + return + if self.charm.state.cluster.model.starting_member != self.charm.unit.name: + logger.info("Non-leader unit waiting for leader to choose it as starting member") + event.defer() + return try: self.charm.config_manager.update_local_valkey_admin() @@ -108,13 +130,104 @@ def _on_start(self, event: ops.StartEvent) -> None: component_name=self.charm.cluster_manager.name, statuses_state=self.charm.state.statuses, ) + + self.charm.state.statuses.delete( + ValkeyServiceStatuses.SERVICE_NOT_RUNNING.value, + scope="unit", + component=self.charm.cluster_manager.name, + ) + + self.unit_fully_started.emit() + + def _on_unit_fully_started(self, event: UnitFullyStarted) -> None: + """Handle the unit-fully-started event.""" + self.charm.status.set_running_status( + ClusterStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value, + scope="unit", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + self.charm.status.set_running_status( + ClusterStatuses.WAITING_FOR_REPLICA_SYNC.value, + scope="unit", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + + if not self.charm.cluster_manager.is_sentinel_discovered(): + logger.info("Sentinel service not yet discovered by other units. Deferring event.") + event.defer() + return + + self.charm.state.statuses.delete( + ClusterStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value, + scope="unit", + component=self.charm.cluster_manager.name, + ) + + if not self.charm.cluster_manager.is_replica_synced(): + logger.info("Replica not yet synced. Deferring event.") + event.defer() + return + + self.charm.state.statuses.delete( + ClusterStatuses.WAITING_FOR_REPLICA_SYNC.value, + scope="unit", + component=self.charm.cluster_manager.name, + ) + logger.info("Services started") self.charm.state.unit_server.update({"started": True}) def _on_peer_relation_joined(self, event: ops.RelationJoinedEvent) -> None: """Handle event received by all units when a new unit joins the cluster relation.""" - if self.charm.unit.is_leader(): - logger.info("Unit %s has joined the relation", event.unit.name) + if not self.charm.unit.is_leader() or not event.unit: + return + + logger.debug("Peer relation joined by %s", event.unit.name) + + if not self.charm.state.unit_server.is_started: + logger.info("Primary member has not started yet. Deferring event.") + event.defer() + return + + if self.charm.state.cluster.model.starting_member: + logger.debug( + "%s is already starting. Deferring relation joined event for %s", + self.charm.state.cluster.model.starting_member, + event.unit.name, + ) + event.defer() + return + self.charm.state.cluster.update({"starting_member": event.unit.name}) + + def _on_peer_relation_changed(self, event: ops.RelationChangedEvent) -> None: + """Handle event received by all units when a unit's relation data changes.""" + logger.debug( + "Starting member is currently %s", self.charm.state.cluster.model.starting_member + ) + starting_unit = next( + ( + unit + for unit in self.charm.state.servers + if unit.unit_name == self.charm.state.cluster.model.starting_member + ), + None, + ) + logger.debug( + "Starting unit has started: %s", + starting_unit.is_started if starting_unit else "No starting unit", + ) + if ( + self.charm.state.cluster.model.starting_member + and starting_unit + and starting_unit.is_started + ): + logger.debug( + "Starting member %s has started. Clearing starting member field.", + self.charm.state.cluster.model.starting_member, + ) + self.charm.state.cluster.update({"starting_member": ""}) def _on_update_status(self, event: ops.UpdateStatusEvent) -> None: """Handle the update-status event.""" diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 7faa038..682d891 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -5,6 +5,7 @@ """Manager for all cluster related tasks.""" import logging +from typing import Literal from data_platform_helpers.advanced_statuses.models import StatusObject from data_platform_helpers.advanced_statuses.protocol import ManagerStatusProtocol @@ -17,7 +18,7 @@ ) from core.base_workload import WorkloadBase from core.cluster_state import ClusterState -from literals import CharmUsers +from literals import CLIENT_PORT, PRIMARY_NAME, SENTINEL_PORT, CharmUsers from statuses import CharmStatuses logger = logging.getLogger(__name__) @@ -64,18 +65,102 @@ def update_primary_auth(self) -> None: except ValkeyWorkloadCommandError: raise ValkeyConfigSetError("Could not set primaryauth on Valkey server.") - def _exec_cli_command(self, command: list[str]) -> str: - """Execute a Valkey CLI command on the server.""" + def is_sentinel_discovered(self) -> bool: + """Check if the sentinel of the local unit was discovered by the other sentinels in the cluster.""" + # list of active sentinels: units with started flag true + active_sentinels = [ + unit.model.private_ip + for unit in self.state.servers + if unit.model + and unit.model.started + and unit.model.private_ip != self.state.unit_server.model.private_ip + ] + + for sentinel_ip in active_sentinels: + try: + output, _ = self._exec_cli_command( + command=["sentinel", "sentinels", PRIMARY_NAME], + hostname=sentinel_ip, + connect_to="sentinel", + ) + if self.state.unit_server.model.private_ip not in output: + logger.info(f"Sentinel at {sentinel_ip} has discovered this sentinel") + return False + except ValkeyWorkloadCommandError: + logger.warning(f"Could not query sentinel at {sentinel_ip} for primary discovery.") + continue + return True + + def is_replica_synced(self) -> bool: + """Check if the replica is synced with the primary.""" + if self.state.unit_server.model.private_ip == self.state.cluster.model.primary_ip: + logger.info("Current unit is primary; no need to check replica sync") + return True + try: + output = ( + self._exec_cli_command( + command=["role"], + )[0] + .strip() + .split() + ) + if output and output[0] == "slave" and output[3] == "connected": + logger.info("Replica is synced with primary") + return True + + return False + except ValkeyWorkloadCommandError: + logger.warning("Could not determine replica sync status from Valkey server.") + return False + + def _exec_cli_command( + self, + command: list[str], + hostname: str = "localhost", + connect_to: Literal["valkey", "sentinel"] = "valkey", + ) -> tuple[str, str | None]: + """Execute a Valkey CLI command on the server. + + Args: + command (list[str]): The CLI command to execute, as a list of arguments. + hostname (str): The hostname to connect to. Defaults to "localhost". + connect_to (Literal["valkey", "sentinel"]): Whether to connect to the valkey server or sentinel for executing the command. Defaults to "valkey". + + Returns: + tuple[str, str | None]: The standard output and standard error from the command execution. + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute. + """ + port = CLIENT_PORT if connect_to == "valkey" else SENTINEL_PORT + user = ( + CharmUsers.VALKEY_ADMIN.value + if connect_to == "valkey" + else CharmUsers.SENTINEL_CHARM_ADMIN.value + ) + password = ( + self.state.unit_server.valkey_admin_password + if connect_to == "valkey" + else self.state.cluster.internal_users_credentials.get( + CharmUsers.SENTINEL_CHARM_ADMIN.value, "" + ) + ) cli_command = [ "valkey-cli", + "-h", + hostname, + "-p", + str(port), "--user", - self.admin_user, + user, "--pass", - self.admin_password, + password, ] + command - output = self.workload.exec(cli_command) + output, error = self.workload.exec(cli_command) logger.debug("Executed command: %s, got output: %s", " ".join(command), output) - return output + if error: + logger.error("Error output from command '%s': %s", " ".join(command), error) + return output, error def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the cluster manager's statuses.""" @@ -86,7 +171,4 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje if not self.workload.can_connect: status_list.append(CharmStatuses.SERVICE_NOT_STARTED.value) - if not self.state.unit_server.is_started: - status_list.append(CharmStatuses.SERVICE_NOT_STARTED.value) - return status_list if status_list else [CharmStatuses.ACTIVE_IDLE.value] diff --git a/src/statuses.py b/src/statuses.py index 84f91c6..5f589ff 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -30,6 +30,18 @@ class ClusterStatuses(Enum): status="blocked", message="Failed to update an internal user's password", running="async" ) + WAITING_FOR_SENTINEL_DISCOVERY = StatusObject( + status="maintenance", + message="Waiting for sentinel to be discovered by other units...", + running="async", + ) + + WAITING_FOR_REPLICA_SYNC = StatusObject( + status="maintenance", + message="Waiting for replica to sync with primary...", + running="async", + ) + class ValkeyServiceStatuses(Enum): """Collection of possible Valkey service related statuses.""" diff --git a/src/workload_k8s.py b/src/workload_k8s.py index c5d0cf9..9bafed0 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -102,14 +102,12 @@ def alive(self) -> bool: return True @override - def exec(self, command: list[str]) -> str: + def exec(self, command: list[str]) -> tuple[str, str | None]: try: process = self.container.exec( command=command, - combine_stderr=True, ) - output, _ = process.wait_output() - return output + return process.wait_output() except ops.pebble.ExecError as e: logger.error("Command failed with %s, %s", e.exit_code, e.stdout) raise ValkeyWorkloadCommandError(e) diff --git a/src/workload_vm.py b/src/workload_vm.py index 9312b29..b36d93b 100644 --- a/src/workload_vm.py +++ b/src/workload_vm.py @@ -88,7 +88,7 @@ def start(self) -> None: logger.exception(str(e)) @override - def exec(self, command: List[str]) -> str: + def exec(self, command: List[str]) -> tuple[str, str | None]: try: output = subprocess.run( command, @@ -96,9 +96,9 @@ def exec(self, command: List[str]) -> str: text=True, capture_output=True, timeout=10, - ).stdout.strip() - logger.debug(output) - return output + ) + logger.debug("Executed command: %s, got output: %s", " ".join(command), output.stdout) + return output.stdout, output.stderr except subprocess.CalledProcessError as e: logger.error("Command failed with %s, %s", e.returncode, e.stderr) raise ValkeyWorkloadCommandError(e) From a6d02bdabc5b0a25f16ff6be6b4103e656ccdb7a Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 9 Feb 2026 05:38:13 +0000 Subject: [PATCH 052/282] add retries to sentinel discovery and replica sync check --- src/managers/cluster.py | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 682d891..b312ee8 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -7,6 +7,7 @@ import logging from typing import Literal +import tenacity from data_platform_helpers.advanced_statuses.models import StatusObject from data_platform_helpers.advanced_statuses.protocol import ManagerStatusProtocol from data_platform_helpers.advanced_statuses.types import Scope @@ -65,6 +66,12 @@ def update_primary_auth(self) -> None: except ValkeyWorkloadCommandError: raise ValkeyConfigSetError("Could not set primaryauth on Valkey server.") + @tenacity.retry( + wait=tenacity.wait_fixed(5), + stop=tenacity.stop_after_attempt(5), + retry=tenacity.retry_if_result(lambda result: result is False), + reraise=True, + ) def is_sentinel_discovered(self) -> bool: """Check if the sentinel of the local unit was discovered by the other sentinels in the cluster.""" # list of active sentinels: units with started flag true @@ -91,6 +98,12 @@ def is_sentinel_discovered(self) -> bool: continue return True + @tenacity.retry( + wait=tenacity.wait_fixed(5), + stop=tenacity.stop_after_attempt(5), + retry=tenacity.retry_if_result(lambda result: result is False), + reraise=True, + ) def is_replica_synced(self) -> bool: """Check if the replica is synced with the primary.""" if self.state.unit_server.model.private_ip == self.state.cluster.model.primary_ip: From cde911e4055509d523d5a3b2a0f19c5b31863026 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 9 Feb 2026 05:46:14 +0000 Subject: [PATCH 053/282] better statuses --- src/events/base_events.py | 23 +++++++++++++++++++++++ src/statuses.py | 11 +++++++++++ 2 files changed, 34 insertions(+) diff --git a/src/events/base_events.py b/src/events/base_events.py index 3b7e69c..007c609 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -86,12 +86,35 @@ def _on_start(self, event: ops.StartEvent) -> None: logger.info( "Non-leader unit waiting for leader to set primary and internal user credentials" ) + self.charm.status.set_running_status( + ClusterStatuses.WAITING_FOR_PRIMARY_START.value, + scope="unit", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) event.defer() return + + self.charm.state.statuses.delete( + ClusterStatuses.WAITING_FOR_PRIMARY_START.value, + scope="unit", + component=self.charm.cluster_manager.name, + ) if self.charm.state.cluster.model.starting_member != self.charm.unit.name: logger.info("Non-leader unit waiting for leader to choose it as starting member") + self.charm.status.set_running_status( + CharmStatuses.WAITING_TO_START.value, + scope="unit", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) event.defer() return + self.charm.state.statuses.delete( + CharmStatuses.WAITING_TO_START.value, + scope="unit", + component=self.charm.cluster_manager.name, + ) try: self.charm.config_manager.update_local_valkey_admin() diff --git a/src/statuses.py b/src/statuses.py index 5f589ff..7139223 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -21,6 +21,11 @@ class CharmStatuses(Enum): message="Cannot access configured secret, check permissions", running="async", ) + WAITING_TO_START = StatusObject( + status="maintenance", + message="Waiting for leader to authorize service start", + running="async", + ) class ClusterStatuses(Enum): @@ -42,6 +47,12 @@ class ClusterStatuses(Enum): running="async", ) + WAITING_FOR_PRIMARY_START = StatusObject( + status="maintenance", + message="Waiting for primary to start and become active...", + running="async", + ) + class ValkeyServiceStatuses(Enum): """Collection of possible Valkey service related statuses.""" From efac5a83a81488664f11132eaf1829bf25042aff Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 9 Feb 2026 07:09:39 +0000 Subject: [PATCH 054/282] seed data and auto decode --- tests/integration/helpers.py | 109 ++++++++++++++++++++++- tests/integration/k8s/ha/helpers.py | 3 +- tests/integration/k8s/ha/test_scaling.py | 8 +- tests/integration/k8s/test_charm.py | 4 +- 4 files changed, 116 insertions(+), 8 deletions(-) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index b8b4501..81e9b8e 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -4,6 +4,8 @@ import contextlib import logging +import os +import time from datetime import datetime, timedelta from pathlib import Path from typing import List @@ -32,6 +34,7 @@ INTERNAL_USERS_SECRET_LABEL = ( f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" ) +SEED_KEY_PREFIX = "seed:key:" def does_status_match( @@ -249,10 +252,48 @@ def create_valkey_client( Returns: A Valkey client instance connected to the cluster. """ - client = valkey.Valkey(host=hostname, port=CLIENT_PORT, username=username, password=password) + client = valkey.Valkey( + host=hostname, + port=CLIENT_PORT, + username=username, + password=password, + decode_responses=True, + ) return client +def create_sentinel_client( + hostnames: list[str], + valkey_user: str | None = CharmUsers.VALKEY_ADMIN.value, + valkey_password: str | None = None, + sentinel_user: str | None = CharmUsers.SENTINEL_ADMIN.value, + sentinel_password: str | None = None, +) -> valkey.Sentinel: + """Create and return a Valkey Sentinel client connected to the cluster. + + Args: + hostnames: A list of hostnames for the Sentinel nodes. + valkey_user: The username for authentication to Valkey. + valkey_password: The password for the internal user for Valkey authentication. + sentinel_user: The username for authentication to Sentinel. + sentinel_password: The password for the internal user for Sentinel authentication. + + Returns: + A Valkey Sentinel client instance connected to the cluster. + """ + sentinel_client = valkey.Sentinel( + [(host, 26379) for host in hostnames], + username=valkey_user, + password=valkey_password, + sentinel_kwargs={ + "password": sentinel_password, + "username": sentinel_user, + }, + decode_responses=True, + ) + return sentinel_client + + def set_password( juju: jubilant.Juju, password: str, @@ -302,9 +343,14 @@ def get_primary_ip(juju: jubilant.Juju, app: str) -> str: The IP address of the primary node. """ hostnames = get_cluster_hostnames(juju, app) - client = create_valkey_client(hostname=hostnames[0], password=get_password(juju)) - info = client.info("replication") - return hostnames[0] if info["role"] == "master" else info.get("master_host", "") + client = create_sentinel_client( + hostnames=hostnames, + valkey_user=CharmUsers.VALKEY_ADMIN.value, + valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + sentinel_user=CharmUsers.SENTINEL_CHARM_ADMIN.value, + sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_CHARM_ADMIN), + ) + return client.discover_master("primary")[0] def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN) -> str: @@ -319,3 +365,58 @@ def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN """ secret = get_secret_by_label(juju, label=INTERNAL_USERS_SECRET_LABEL) return secret.get(f"{user.value}-password", "") + + +def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: + # Connect to Valkey + primary_ip = get_primary_ip(juju, APP_NAME) + client = valkey.Valkey( + host=primary_ip, + port=CLIENT_PORT, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + + # Configuration + value_size_bytes = 1024 # 1KB per value + batch_size = 5000 # Commands per pipeline + total_bytes_target = target_gb * 1024 * 1024 * 1024 + total_keys = total_bytes_target // value_size_bytes + + logger.debug( + f"Targeting ~{target_gb}GB ({total_keys:,} keys of {value_size_bytes} bytes each)" + ) + + start_time = time.time() + keys_added = 0 + + # Generate a fixed random block to reuse (saves CPU cycles on generation) + random_data = os.urandom(value_size_bytes).hex()[:value_size_bytes] + + try: + while keys_added < total_keys: + pipe = client.pipeline(transaction=False) + + # Fill the batch + for i in range(batch_size): + key_idx = keys_added + i + pipe.set(f"{SEED_KEY_PREFIX}{key_idx}", random_data) + + if keys_added + i >= total_keys: + break + + pipe.execute() + keys_added += batch_size + + # Progress reporting + elapsed = time.time() - start_time + percent = (keys_added / total_keys) * 100 + logger.info( + f"Progress: {percent:.1f}% | Keys: {keys_added:,} | Elapsed: {elapsed:.1f}s", + ) + + except Exception as e: + logger.error(f"\nError: {e}") + finally: + total_time = time.time() - start_time + logger.info(f"\nSeeding complete! Added {keys_added:,} keys in {total_time:.2f} seconds.") diff --git a/tests/integration/k8s/ha/helpers.py b/tests/integration/k8s/ha/helpers.py index 6cc84d9..3ea3967 100644 --- a/tests/integration/k8s/ha/helpers.py +++ b/tests/integration/k8s/ha/helpers.py @@ -85,8 +85,9 @@ def assert_continuous_writes_consistent( port=CLIENT_PORT, username=valkey_user, password=valkey_password, + decode_responses=True, ) - last_value = int(client.get(KEY).decode("utf-8")) + last_value = int(client.get(KEY)) assert last_written_value == last_value, ( f"endpoint: {endpoint}, expected value: {last_written_value}, current value: {last_value}" ) diff --git a/tests/integration/k8s/ha/test_scaling.py b/tests/integration/k8s/ha/test_scaling.py index d951a60..341159c 100644 --- a/tests/integration/k8s/ha/test_scaling.py +++ b/tests/integration/k8s/ha/test_scaling.py @@ -13,6 +13,7 @@ are_apps_active_and_agents_idle, get_cluster_hostnames, get_password, + seed_valkey, ) from .helpers import ( @@ -42,7 +43,12 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: ) -async def test_scale_up(juju: jubilant.Juju) -> None: +def test_seed_data(juju: jubilant.Juju) -> None: + """Seed some data to the cluster.""" + seed_valkey(juju, target_gb=1) + + +def test_scale_up(juju: jubilant.Juju) -> None: """Make sure new units are added to the valkey downtime.""" init_units_count = len(juju.status().apps[APP_NAME].units) init_endpoints = ",".join(get_cluster_hostnames(juju, APP_NAME)) diff --git a/tests/integration/k8s/test_charm.py b/tests/integration/k8s/test_charm.py index efa90ed..021a195 100644 --- a/tests/integration/k8s/test_charm.py +++ b/tests/integration/k8s/test_charm.py @@ -115,7 +115,7 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: assert client.ping() is True, ( f"Failed to authenticate with admin password after removing user secret on host {hostname}" ) - assert client.get(TEST_KEY) == bytes(TEST_VALUE, "utf-8"), ( + assert client.get(TEST_KEY) == TEST_VALUE, ( f"Failed to read data after admin password update on host {hostname}" ) @@ -218,7 +218,7 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: assert client.ping() is True, ( f"Failed to authenticate with new admin password on host {hostname}" ) - assert client.get(TEST_KEY) == bytes(TEST_VALUE, "utf-8"), ( + assert client.get(TEST_KEY) == TEST_VALUE, ( f"Failed to read data after admin password update on host {hostname}" ) From c165c68ff360e63678164e8d03a3bf59d5b64465 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 9 Feb 2026 07:25:06 +0000 Subject: [PATCH 055/282] add different scenarios for unit test non leader starting --- tests/unit/test_charm.py | 81 +++++++++++++++++++++++++++++++--------- 1 file changed, 63 insertions(+), 18 deletions(-) diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 46b6e9a..39fe735 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -142,7 +142,7 @@ def test_start_non_leader_unit(cloud_spec): assert "start" in [e.name for e in state_out.deferred] relation = testing.PeerRelation( - id=1, endpoint=PEER_RELATION, local_app_data={"primary_ip": "127.1.0.1"} + id=1, endpoint=PEER_RELATION, local_app_data={"primary-ip": "127.1.0.1"} ) state_in = testing.State( model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), @@ -152,24 +152,69 @@ def test_start_non_leader_unit(cloud_spec): containers={container}, ) state_out = ctx.run(ctx.on.start(), state_in) - assert state_out.get_container(container.name).service_statuses.get(SERVICE_VALKEY) - assert state_out.get_container(container.name).service_statuses.get( - SERVICE_METRIC_EXPORTER - ) - assert state_out.get_container(container.name).service_statuses[SERVICE_SENTINEL] - assert state_out.get_relation(1).local_unit_data["started"] == "true" - # container not ready - container = testing.Container(name=CONTAINER, can_connect=False) - state_in = testing.State( - model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), - leader=True, - relations={relation, status_peer_relation}, - containers={container}, - ) - - state_out = ctx.run(ctx.on.start(), state_in) - assert status_is(state_out, CharmStatuses.SERVICE_NOT_STARTED.value) + assert status_is(state_out, CharmStatuses.WAITING_TO_START.value) + + # replica syncing + with patch("managers.cluster.ClusterManager.is_replica_synced", return_value=False): + relation = testing.PeerRelation( + id=1, + endpoint=PEER_RELATION, + local_app_data={"primary-ip": "127.1.0.1", "starting-member": "valkey/0"}, + ) + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + leader=False, + relations={relation, status_peer_relation}, + secrets={internal_passwords_secret}, + containers={container}, + ) + state_out = ctx.run(ctx.on.start(), state_in) + assert status_is(state_out, ClusterStatuses.WAITING_FOR_REPLICA_SYNC.value) + + # sentinel not yet discovered + with patch("managers.cluster.ClusterManager.is_sentinel_discovered", return_value=False): + relation = testing.PeerRelation( + id=1, + endpoint=PEER_RELATION, + local_app_data={"primary-ip": "127.1.0.1", "starting-member": "valkey/0"}, + ) + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + leader=False, + relations={relation, status_peer_relation}, + secrets={internal_passwords_secret}, + containers={container}, + ) + state_out = ctx.run(ctx.on.start(), state_in) + assert status_is(state_out, ClusterStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value) + + # Happy path with sentinel discovered and replica synced + with ( + patch("managers.cluster.ClusterManager.is_sentinel_discovered", return_value=True), + patch("managers.cluster.ClusterManager.is_replica_synced", return_value=True), + ): + relation = testing.PeerRelation( + id=1, + endpoint=PEER_RELATION, + local_app_data={"primary-ip": "127.1.0.1", "starting-member": "valkey/0"}, + ) + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + leader=False, + relations={relation, status_peer_relation}, + secrets={internal_passwords_secret}, + containers={container}, + ) + state_out = ctx.run(ctx.on.start(), state_in) + assert status_is(state_out, CharmStatuses.ACTIVE_IDLE.value) + + assert state_out.get_container(container.name).service_statuses.get(SERVICE_VALKEY) + assert state_out.get_container(container.name).service_statuses.get( + SERVICE_METRIC_EXPORTER + ) + assert state_out.get_container(container.name).service_statuses[SERVICE_SENTINEL] + assert state_out.get_relation(1).local_unit_data["started"] == "true" def test_update_status_leader_unit(cloud_spec): From 230b4e54e0d15e15c083a7e6956df835073a9979 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 9 Feb 2026 07:56:57 +0000 Subject: [PATCH 056/282] update vm tests --- tests/integration/vm/test_charm.py | 203 ++++++++++++++++------------- 1 file changed, 113 insertions(+), 90 deletions(-) diff --git a/tests/integration/vm/test_charm.py b/tests/integration/vm/test_charm.py index 079cf21..eb22aa3 100644 --- a/tests/integration/vm/test_charm.py +++ b/tests/integration/vm/test_charm.py @@ -2,34 +2,33 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. import logging -from time import sleep import jubilant import pytest +from valkey import AuthenticationError from literals import ( INTERNAL_USERS_PASSWORD_CONFIG, CharmUsers, ) -from statuses import ClusterStatuses +from statuses import CharmStatuses, ClusterStatuses from tests.integration.helpers import ( APP_NAME, INTERNAL_USERS_SECRET_LABEL, - CharmStatuses, + are_apps_active_and_agents_idle, create_valkey_client, does_status_match, fast_forward, get_cluster_hostnames, - get_key, + get_password, + get_primary_ip, get_secret_by_label, - set_key, set_password, ) logger = logging.getLogger(__name__) -# TODO scale up when scaling is implemented -NUM_UNITS = 1 +NUM_UNITS = 3 TEST_KEY = "test_key" TEST_VALUE = "test_value" @@ -38,93 +37,91 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: """Build the charm-under-test and deploy it with three units.""" juju.deploy(charm, num_units=NUM_UNITS, trust=True) juju.wait( - lambda status: does_status_match( - status, - expected_app_statuses={APP_NAME: [CharmStatuses.SCALING_NOT_IMPLEMENTED.value]}, - ), + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), timeout=600, ) async def test_authentication(juju: jubilant.Juju) -> None: """Assert that we can authenticate to valkey.""" + primary = get_primary_ip(juju, APP_NAME) hostnames = get_cluster_hostnames(juju, APP_NAME) # try without authentication - logger.info("Ensure unauthenticated access fails") - with pytest.raises(Exception) as exc_info: - unauth_client = await create_valkey_client( - hostnames=hostnames, username=None, password=None - ) + with pytest.raises(AuthenticationError): + unauth_client = create_valkey_client(hostname=primary, username=None, password=None) await unauth_client.ping() - assert "NOAUTH" in str(exc_info.value), "Unauthenticated access did not fail as expected" # Authenticate with internal user - secret = get_secret_by_label(juju, label=INTERNAL_USERS_SECRET_LABEL) - password = secret.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") + password = get_password(juju, user=CharmUsers.VALKEY_ADMIN) assert password is not None, "Admin password secret not found" - logger.info("Check access works correctly when authenticated") - client = await create_valkey_client(hostnames=hostnames, password=password) - auth_result = await client.ping() - assert auth_result == b"PONG", "Authentication to Valkey cluster failed" + for hostname in hostnames: + client = create_valkey_client(hostname=hostname, password=password) + assert client.ping() is True, ( + f"Authentication to Valkey cluster failed for host {hostname}" + ) async def test_update_admin_password(juju: jubilant.Juju) -> None: """Assert the admin password is updated when adding a user secret to the config.""" - hostnames = get_cluster_hostnames(juju, APP_NAME) - # create a user secret and grant it to the application logger.info("Updating operator password") - secret = get_secret_by_label(juju, label=INTERNAL_USERS_SECRET_LABEL) - old_password = secret.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") + old_password = get_password(juju, user=CharmUsers.VALKEY_ADMIN) new_password = "some-password" set_password(juju, new_password) # wait for config-changed hook to finish executing - juju.wait(lambda status: jubilant.all_agents_idle(status, APP_NAME), timeout=1200) + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), + timeout=1200, + ) - logger.info("Ensure password was updated on charm-internal secret") - updated_secret = get_secret_by_label(juju, label=INTERNAL_USERS_SECRET_LABEL) - assert old_password != updated_secret.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") + new_password_secret = get_password(juju, user=CharmUsers.VALKEY_ADMIN) + assert new_password_secret == new_password, "Admin password not updated in secret" - logger.info("Ensure access with old password no longer possible") - with pytest.raises(Exception) as exc_info: - unauth_client = await create_valkey_client( - hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=old_password - ) - await unauth_client.ping() - assert "WRONGPASS" in str(exc_info.value), "Unauthenticated access did not fail as expected" - - logger.info("Check access with updated password") - result = await set_key( - hostnames=hostnames, - username=CharmUsers.VALKEY_ADMIN.value, - password=new_password, - key=TEST_KEY, - value=TEST_VALUE, + primary = get_primary_ip(juju, APP_NAME) + + # confirm old password no longer works + with pytest.raises(AuthenticationError): + create_valkey_client( + hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=old_password + ).ping() + # ping with new password + client = create_valkey_client( + hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + ) + assert client.ping() is True, "Failed to authenticate with new admin password" + + assert client.set(TEST_KEY, TEST_VALUE) is True, ( + "Failed to write data after admin password update" ) - assert result == "OK", "Failed to write data after admin password update" # update the config again and remove the option `admin-password` logger.info("Ensure access is still possible after removing config option") juju.config(app=APP_NAME, reset=[INTERNAL_USERS_PASSWORD_CONFIG]) # wait for config-changed hook to finish executing - juju.wait(lambda status: jubilant.all_agents_idle(status, APP_NAME), timeout=1200) + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), + timeout=1200, + ) - # make sure we can still read data with the previously set password - assert await get_key( - hostnames=hostnames, - username=CharmUsers.VALKEY_ADMIN.value, - password=new_password, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8") + for hostname in get_cluster_hostnames(juju, APP_NAME): + client = create_valkey_client( + hostname=hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + ) + assert client.ping() is True, ( + f"Failed to authenticate with admin password after removing user secret on host {hostname}" + ) + assert client.get(TEST_KEY) == TEST_VALUE, ( + f"Failed to read data after admin password update on host {hostname}" + ) async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None: """Assert the admin password is updated when adding a user secret to the config.""" - hostnames = get_cluster_hostnames(juju, APP_NAME) + # create a user secret and grant it to the application secret = get_secret_by_label(juju, label=INTERNAL_USERS_SECRET_LABEL) old_passwords = {} @@ -133,9 +130,6 @@ async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None if user == CharmUsers.VALKEY_ADMIN: continue old_passwords[user.value] = secret.get(f"{user.value}-password") - - # create a user secret and grant it to the application - logger.info("Updating invalid username") new_password = "some-password" set_password(juju, username="wrong-username", password=new_password) @@ -148,20 +142,22 @@ async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None timeout=1200, ) - logger.info("Updating password correctly now") set_password(juju, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) # wait for config-changed hook to finish executing - juju.wait(lambda status: jubilant.all_agents_idle(status, APP_NAME), timeout=1200) + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), + timeout=1200, + ) # perform read operation with the updated password - result = await set_key( - hostnames=hostnames, - username=CharmUsers.VALKEY_ADMIN.value, - password=new_password, - key=TEST_KEY, - value=TEST_VALUE, + primary = get_primary_ip(juju, APP_NAME) + client = create_valkey_client( + hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + ) + assert client.ping() is True, "Failed to authenticate with new admin password" + assert client.set(TEST_KEY, TEST_VALUE) is True, ( + "Failed to write data after admin password update" ) - assert result == "OK", "Failed to write data after admin password update" logger.info("Comparing other users passwords to previously") updated_secret = get_secret_by_label(juju, label=INTERNAL_USERS_SECRET_LABEL) @@ -175,8 +171,6 @@ async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None async def test_user_secret_permissions(juju: jubilant.Juju) -> None: """If a user secret is not granted, ensure we can process updated permissions.""" - hostnames = get_cluster_hostnames(juju, APP_NAME) - logger.info("Creating new user secret") secret_name = "my_secret" new_password = "even-newer-password" @@ -199,29 +193,58 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: # deferred `config_changed` event will be retried before `update_status` with fast_forward(juju): juju.grant_secret(identifier=secret_name, app=APP_NAME) - sleep(20) # allow some time for the permission to propagate - - # juju.wait( - # lambda status: jubilant.all_active(status, APP_NAME), - # timeout=1200, - # ) - juju.wait( - lambda status: does_status_match( - status, - expected_app_statuses={APP_NAME: [CharmStatuses.SCALING_NOT_IMPLEMENTED.value]}, - ), - timeout=600, - ) + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), + timeout=1200, + ) # perform read operation with the updated password - assert await get_key( - hostnames=hostnames, - username=CharmUsers.VALKEY_ADMIN.value, - password=new_password, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data after secret permissions were updated" + hostnames = get_cluster_hostnames(juju, APP_NAME) + primary = get_primary_ip(juju, APP_NAME) + client = create_valkey_client( + hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + ) + assert client.ping() is True, "Failed to authenticate with new admin password" + assert client.set(TEST_KEY, TEST_VALUE) is True, ( + "Failed to write data after admin password update" + ) + for hostname in hostnames: + client = create_valkey_client( + hostname=hostname, + username=CharmUsers.VALKEY_ADMIN.value, + password=new_password, + ) + assert client.ping() is True, ( + f"Failed to authenticate with new admin password on host {hostname}" + ) + assert client.get(TEST_KEY) == TEST_VALUE, ( + f"Failed to read data after admin password update on host {hostname}" + ) logger.info("Password update successful after secret was granted") + # change replication password + replica_password = "replica-password" + juju.update_secret( + identifier=secret_id, + content={ + CharmUsers.VALKEY_ADMIN.value: new_password, + CharmUsers.VALKEY_REPLICA.value: replica_password, + }, + ) -# TODO Once scaling is implemented, add tests to check on password update in non-leader units + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), + timeout=1200, + ) + + # perform pings with the updated replica password + for hostname in hostnames: + client = create_valkey_client( + hostname=hostname, + username=CharmUsers.VALKEY_REPLICA.value, + password=replica_password, + ) + assert client.ping() is True, ( + f"Failed to authenticate with new replica password on host {hostname}" + ) From 3dbb47152c3a60f788b8e7cf8538a18f92d0bdb9 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 9 Feb 2026 10:35:02 +0000 Subject: [PATCH 057/282] remove primary ip from databag --- src/core/models.py | 1 - src/events/base_events.py | 29 ++++++++++++++++++----------- src/managers/cluster.py | 35 +++++++++++++++++++++++++++++++---- src/managers/config.py | 24 +++++++++++------------- 4 files changed, 60 insertions(+), 29 deletions(-) diff --git a/src/core/models.py b/src/core/models.py index 450b5ba..273c87f 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -36,7 +36,6 @@ class PeerAppModel(PeerModel): charmed_stats_password: InternalUsersSecret = Field(default="") charmed_sentinel_peers_password: InternalUsersSecret = Field(default="") charmed_sentinel_operator_password: InternalUsersSecret = Field(default="") - primary_ip: str = Field(default="") starting_member: str = Field(default="") diff --git a/src/events/base_events.py b/src/events/base_events.py index 007c609..a29d2c2 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -81,7 +81,7 @@ def _on_start(self, event: ops.StartEvent) -> None: if not self.charm.unit.is_leader(): if ( not self.charm.state.cluster.internal_users_credentials - or not self.charm.state.cluster.model.primary_ip + or not self.charm.cluster_manager.number_units_started ): logger.info( "Non-leader unit waiting for leader to set primary and internal user credentials" @@ -116,11 +116,22 @@ def _on_start(self, event: ops.StartEvent) -> None: component=self.charm.cluster_manager.name, ) + if not ( + primary_ip := ( + self.charm.state.unit_server.model.private_ip + if self.charm.unit.is_leader() + else self.charm.cluster_manager.get_primary_ip() + ) + ): + logger.error("Primary IP not found. Deferring start event.") + event.defer() + return + try: self.charm.config_manager.update_local_valkey_admin() - self.charm.config_manager.set_config_properties() + self.charm.config_manager.set_config_properties(primary_ip=primary_ip) self.charm.config_manager.set_acl_file() - self.charm.config_manager.set_sentinel_config_properties() + self.charm.config_manager.set_sentinel_config_properties(primary_ip=primary_ip) self.charm.config_manager.set_sentinel_acl_file() self.charm.workload.mkdir( self.charm.workload.working_dir, user=CHARM_USER, group=CHARM_USER @@ -159,6 +170,10 @@ def _on_start(self, event: ops.StartEvent) -> None: scope="unit", component=self.charm.cluster_manager.name, ) + if self.charm.unit.is_leader(): + logger.info("Services started") + self.charm.state.unit_server.update({"started": True}) + return self.unit_fully_started.emit() @@ -273,14 +288,6 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: if not self.charm.unit.is_leader(): return - if not self.charm.state.cluster.model.primary_ip: - # set the primary to this unit if not already set - self.charm.state.cluster.update( - { - "primary_ip": self.charm.state.unit_server.model.private_ip, - } - ) - if self.charm.state.cluster.internal_users_credentials: logger.debug("Internal user credentials already set") return diff --git a/src/managers/cluster.py b/src/managers/cluster.py index b312ee8..b4dce81 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -36,8 +36,11 @@ def __init__(self, state: ClusterState, workload: WorkloadBase): self.workload = workload self.admin_user = CharmUsers.VALKEY_ADMIN.value self.admin_password = self.state.unit_server.valkey_admin_password - # target only the unit's valkey server IP - self.cluster_ips = [self.workload.get_private_ip()] + + @property + def number_units_started(self) -> int: + """Return the number of units in the cluster that have their Valkey server started.""" + return len([unit for unit in self.state.servers if unit.model and unit.model.started]) def reload_acl_file(self) -> None: """Reload the ACL file into the cluster.""" @@ -48,7 +51,7 @@ def reload_acl_file(self) -> None: def update_primary_auth(self) -> None: """Update the primaryauth runtime configuration on the Valkey server.""" - if self.state.unit_server.model.private_ip == self.state.cluster.model.primary_ip: + if self.get_primary_ip() == self.state.unit_server.model.private_ip: logger.info("Current unit is primary; no need to update primaryauth") return try: @@ -106,7 +109,7 @@ def is_sentinel_discovered(self) -> bool: ) def is_replica_synced(self) -> bool: """Check if the replica is synced with the primary.""" - if self.state.unit_server.model.private_ip == self.state.cluster.model.primary_ip: + if self.get_primary_ip() == self.state.unit_server.model.private_ip: logger.info("Current unit is primary; no need to check replica sync") return True try: @@ -126,6 +129,30 @@ def is_replica_synced(self) -> bool: logger.warning("Could not determine replica sync status from Valkey server.") return False + def get_primary_ip(self) -> str | None: + """Get the IP address of the primary node in the cluster.""" + started_servers = [ + unit for unit in self.state.servers if unit.model and unit.model.started + ] + + for unit in started_servers: + try: + output = self._exec_cli_command( + ["sentinel", "get-master-addr-by-name", PRIMARY_NAME], + connect_to="sentinel", + hostname=unit.model.private_ip, + )[0] + primary_ip = output.strip().split()[0] + logger.info(f"Primary IP address is {primary_ip}") + return primary_ip + except (IndexError, ValkeyWorkloadCommandError): + logger.error("Could not get primary IP from sentinel output.") + + logger.error( + "Could not determine primary IP from sentinels. Number of started servers: %d.", + len(started_servers), + ) + def _exec_cli_command( self, command: list[str], diff --git a/src/managers/config.py b/src/managers/config.py index 6067712..7fbcca2 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -44,8 +44,7 @@ def __init__(self, state: ClusterState, workload: WorkloadBase): self.state = state self.workload = workload - @property - def config_properties(self) -> dict[str, str]: + def get_config_properties(self, primary_ip: str) -> dict[str, str]: """Assemble the config properties. Returns: @@ -85,17 +84,14 @@ def config_properties(self) -> dict[str, str]: logger.debug( "primary: %s, hostname: %s", - self.state.cluster.model.primary_ip, + primary_ip, self.state.unit_server.model.hostname, ) # replicaof - if ( - self.state.cluster.model.primary_ip - and self.state.cluster.model.primary_ip != self.state.unit_server.model.private_ip - ): + if primary_ip != self.state.unit_server.model.private_ip: # set replicaof - logger.debug("Setting replicaof to primary %s", self.state.cluster.model.primary_ip) - config_properties["replicaof"] = f"{self.state.cluster.model.primary_ip} {CLIENT_PORT}" + logger.debug("Setting replicaof to primary %s", primary_ip) + config_properties["replicaof"] = f"{primary_ip} {CLIENT_PORT}" config_properties["primaryuser"] = CharmUsers.VALKEY_REPLICA.value config_properties["primaryauth"] = self.state.cluster.internal_users_credentials.get( CharmUsers.VALKEY_REPLICA.value, "" @@ -103,10 +99,10 @@ def config_properties(self) -> dict[str, str]: return config_properties - def set_config_properties(self) -> None: + def set_config_properties(self, primary_ip: str) -> None: """Write the config properties to the config file.""" logger.debug("Writing configuration") - self.workload.write_config_file(config=self.config_properties) + self.workload.write_config_file(config=self.get_config_properties(primary_ip=primary_ip)) def set_acl_file(self, passwords: dict[str, str] | None = None) -> None: """Write the ACL file with appropriate user permissions. @@ -142,7 +138,7 @@ def _get_user_acl_line(self, user: CharmUsers, passwords: dict[str, str] | None password_hash = hashlib.sha256(password.encode("utf-8")).hexdigest() return f"user {user.value} on #{password_hash} {CHARM_USERS_ROLE_MAP[user]}\n" - def set_sentinel_config_properties(self) -> None: + def set_sentinel_config_properties(self, primary_ip: str) -> None: """Write sentinel configuration file.""" logger.debug("Writing Sentinel configuration") @@ -150,7 +146,9 @@ def set_sentinel_config_properties(self) -> None: sentinel_config += f"aclfile {SENTINEL_ACL_FILE}\n" # TODO consider adding quorum calculation based on number of units - sentinel_config += f"sentinel monitor {PRIMARY_NAME} {self.state.cluster.model.primary_ip} {CLIENT_PORT} {QUORUM_NUMBER}\n" + sentinel_config += ( + f"sentinel monitor {PRIMARY_NAME} {primary_ip} {CLIENT_PORT} {QUORUM_NUMBER}\n" + ) # auth settings # auth-user is used by sentinel to authenticate to the valkey primary sentinel_config += ( From 8b50dfff4380157ddbc041fe86922a1cff8dd20f Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 9 Feb 2026 10:54:29 +0000 Subject: [PATCH 058/282] fix unit tests --- tests/unit/test_charm.py | 42 ++++++++++++++++++++++++++++++---------- 1 file changed, 32 insertions(+), 10 deletions(-) diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 39fe735..a163977 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -121,7 +121,6 @@ def test_start_non_leader_unit(cloud_spec): relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) status_peer_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) - # happy path container = testing.Container(name=CONTAINER, can_connect=True) state_in = testing.State( model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), @@ -133,6 +132,7 @@ def test_start_non_leader_unit(cloud_spec): with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("workload_k8s.ValkeyK8sWorkload.mkdir"), + patch("managers.cluster.ClusterManager.get_primary_ip", return_value="127.1.0.1"), ): state_out = ctx.run(ctx.on.start(), state_in) assert not state_out.get_container(container.name).service_statuses.get(SERVICE_VALKEY) @@ -141,8 +141,23 @@ def test_start_non_leader_unit(cloud_spec): ) assert "start" in [e.name for e in state_out.deferred] + relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + leader=False, + relations={relation, status_peer_relation}, + secrets={internal_passwords_secret}, + containers={container}, + ) + state_out = ctx.run(ctx.on.start(), state_in) + + assert status_is(state_out, ClusterStatuses.WAITING_FOR_PRIMARY_START.value) + relation = testing.PeerRelation( - id=1, endpoint=PEER_RELATION, local_app_data={"primary-ip": "127.1.0.1"} + id=1, + endpoint=PEER_RELATION, + local_app_data={"primary-ip": "127.1.0.1"}, + peers_data={1: {"started": "true"}}, ) state_in = testing.State( model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), @@ -160,7 +175,8 @@ def test_start_non_leader_unit(cloud_spec): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, - local_app_data={"primary-ip": "127.1.0.1", "starting-member": "valkey/0"}, + local_app_data={"starting-member": "valkey/0"}, + peers_data={1: {"started": "true"}}, ) state_in = testing.State( model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), @@ -177,7 +193,8 @@ def test_start_non_leader_unit(cloud_spec): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, - local_app_data={"primary-ip": "127.1.0.1", "starting-member": "valkey/0"}, + local_app_data={"starting-member": "valkey/0"}, + peers_data={1: {"started": "true"}}, ) state_in = testing.State( model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), @@ -197,7 +214,8 @@ def test_start_non_leader_unit(cloud_spec): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, - local_app_data={"primary-ip": "127.1.0.1", "starting-member": "valkey/0"}, + local_app_data={"starting-member": "valkey/0"}, + peers_data={1: {"started": "true"}}, ) state_in = testing.State( model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), @@ -429,9 +447,7 @@ def test_config_changed_leader_unit(cloud_spec): def test_config_changed_leader_unit_primary(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) - relation = testing.PeerRelation( - id=1, endpoint=PEER_RELATION, local_app_data={"primary_ip": "127.0.1.1"} - ) + relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( @@ -451,6 +467,7 @@ def test_config_changed_leader_unit_primary(cloud_spec): patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, patch("managers.cluster.ClusterManager._exec_cli_command") as mock_exec_command, patch("core.base_workload.WorkloadBase.get_private_ip", return_value="127.0.1.1"), + patch("managers.cluster.ClusterManager.get_primary_ip", return_value="127.0.1.1"), ): state_out = ctx.run(ctx.on.config_changed(), state_in) mock_set_acl_file.assert_called_once() @@ -498,7 +515,11 @@ def test_config_changed_leader_unit_wrong_username(cloud_spec): def test_change_password_secret_changed_non_leader_unit(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) - relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + relation = testing.PeerRelation( + id=1, + endpoint=PEER_RELATION, + local_unit_data={"started": "true", "private-ip": "127.0.1.0"}, + ) container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( @@ -521,11 +542,12 @@ def test_change_password_secret_changed_non_leader_unit(cloud_spec): ) as mock_update_password, patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, patch("managers.cluster.ClusterManager._exec_cli_command") as mock_exec_command, + patch("managers.cluster.ClusterManager.get_primary_ip", return_value="127.0.1.1"), ): ctx.run(ctx.on.secret_changed(password_secret), state_in) mock_update_password.assert_not_called() mock_set_acl_file.assert_called_once() - mock_exec_command.assert_called_once_with(["acl", "load"]) + assert mock_exec_command.call_count == 2 def test_change_password_secret_changed_non_leader_unit_not_successful(cloud_spec): From 7c553be1abd0d6171320ac1ed1aad311de6109be Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 10 Feb 2026 05:23:17 +0000 Subject: [PATCH 059/282] fix vm startup --- src/core/base_workload.py | 20 +------------------- src/events/base_events.py | 17 ++++++++++++----- src/literals.py | 2 ++ src/managers/cluster.py | 8 +++++--- src/managers/config.py | 21 ++++++++++++++------- src/statuses.py | 27 ++++++++++++++++++++++----- src/workload_k8s.py | 1 + src/workload_vm.py | 5 +++++ tests/integration/helpers.py | 28 ++++++++++++++++++++-------- tests/integration/vm/test_charm.py | 3 ++- tests/unit/test_charm.py | 2 -- 11 files changed, 84 insertions(+), 50 deletions(-) diff --git a/src/core/base_workload.py b/src/core/base_workload.py index 096cc85..d9f31fc 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -27,6 +27,7 @@ def __init__(self) -> None: self.acl_file: pathops.PathProtocol self.sentinel_acl_file: pathops.PathProtocol self.working_dir: pathops.PathProtocol + self.cli: str @property @abstractmethod @@ -120,22 +121,3 @@ def write_config_file(self, config: dict[str, str]) -> None: ValueError, ) as e: raise ValkeyWorkloadCommandError(e) - - def mkdir( - self, - path: pathops.PathProtocol, - mode: int = 0o755, - user: str | None = None, - group: str | None = None, - exist_ok: bool = True, - ) -> None: - """Create a directory on disk. - - Args: - path (pathops.PathProtocol): The directory path to be created. - mode (int, optional): The directory mode (permissions). Defaults to None. - user (str, optional): The user name. Defaults to None. - group (str, optional): The group name. Defaults to None. - exist_ok (bool, optional): Whether to ignore if the directory already exists. Defaults to True. - """ - path.mkdir(mode=mode, user=user, group=group, exist_ok=exist_ok) diff --git a/src/events/base_events.py b/src/events/base_events.py index a29d2c2..98fd05f 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -12,7 +12,6 @@ from common.exceptions import ValkeyACLLoadError, ValkeyConfigSetError, ValkeyWorkloadCommandError from literals import ( - CHARM_USER, CLIENT_PORT, INTERNAL_USERS_PASSWORD_CONFIG, INTERNAL_USERS_SECRET_LABEL_SUFFIX, @@ -118,7 +117,7 @@ def _on_start(self, event: ops.StartEvent) -> None: if not ( primary_ip := ( - self.charm.state.unit_server.model.private_ip + self.charm.workload.get_private_ip() if self.charm.unit.is_leader() else self.charm.cluster_manager.get_primary_ip() ) @@ -133,13 +132,21 @@ def _on_start(self, event: ops.StartEvent) -> None: self.charm.config_manager.set_acl_file() self.charm.config_manager.set_sentinel_config_properties(primary_ip=primary_ip) self.charm.config_manager.set_sentinel_acl_file() - self.charm.workload.mkdir( - self.charm.workload.working_dir, user=CHARM_USER, group=CHARM_USER - ) except (ValkeyWorkloadCommandError, ValueError): logger.error("Failed to set configuration") + self.charm.status.set_running_status( + CharmStatuses.CONFIGURATION_ERROR.value, + scope="unit", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) event.defer() return + self.charm.state.statuses.delete( + CharmStatuses.CONFIGURATION_ERROR.value, + scope="unit", + component=self.charm.cluster_manager.name, + ) self.charm.status.set_running_status( ValkeyServiceStatuses.SERVICE_STARTING.value, scope="unit", diff --git a/src/literals.py b/src/literals.py index 8031c14..65b0518 100644 --- a/src/literals.py +++ b/src/literals.py @@ -16,7 +16,9 @@ SNAP_COMMON_PATH = "var/snap/charmed-valkey/common" SNAP_CURRENT_PATH = "var/snap/charmed-valkey/current" SNAP_CONFIG_FILE = "etc/charmed-valkey/valkey.conf" +SNAP_SENTINEL_CONFIG_FILE = "etc/charmed-valkey/sentinel.conf" SNAP_ACL_FILE = "etc/charmed-valkey/users.acl" +SNAP_SENTINEL_ACL_FILE = "etc/charmed-valkey/sentinel-users.acl" # todo: update these paths once directories in the rock are complying with the standard CONFIG_FILE = "var/lib/valkey/valkey.conf" diff --git a/src/managers/cluster.py b/src/managers/cluster.py index b4dce81..cccd778 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -156,14 +156,14 @@ def get_primary_ip(self) -> str | None: def _exec_cli_command( self, command: list[str], - hostname: str = "localhost", + hostname: str | None = None, connect_to: Literal["valkey", "sentinel"] = "valkey", ) -> tuple[str, str | None]: """Execute a Valkey CLI command on the server. Args: command (list[str]): The CLI command to execute, as a list of arguments. - hostname (str): The hostname to connect to. Defaults to "localhost". + hostname (str | None): The hostname to connect to. Defaults to private ip of unit. connect_to (Literal["valkey", "sentinel"]): Whether to connect to the valkey server or sentinel for executing the command. Defaults to "valkey". Returns: @@ -172,6 +172,8 @@ def _exec_cli_command( Raises: ValkeyWorkloadCommandError: If the CLI command fails to execute. """ + if not hostname: + hostname = self.workload.get_private_ip() port = CLIENT_PORT if connect_to == "valkey" else SENTINEL_PORT user = ( CharmUsers.VALKEY_ADMIN.value @@ -186,7 +188,7 @@ def _exec_cli_command( ) ) cli_command = [ - "valkey-cli", + self.workload.cli, "-h", hostname, "-p", diff --git a/src/managers/config.py b/src/managers/config.py index 7fbcca2..6568bf9 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -163,13 +163,20 @@ def set_sentinel_config_properties(self, primary_ip: str) -> None: sentinel_config += f"sentinel failover-timeout {PRIMARY_NAME} 180000\n" sentinel_config += f"sentinel parallel-syncs {PRIMARY_NAME} 1\n" - self.workload.write_file( - sentinel_config, - self.workload.sentinel_config, - mode=0o600, - user=CHARM_USER, - group=CHARM_USER, - ) + if self.state.substrate == Substrate.K8S: + # on k8s we need to set the ownership of the sentinel config file to the non-root user that the valkey process runs as in order for sentinel to be able to read/write it + self.workload.write_file( + sentinel_config, + self.workload.sentinel_config, + mode=0o600, + user=CHARM_USER, + group=CHARM_USER, + ) + else: + self.workload.write_file( + sentinel_config, + self.workload.sentinel_config, + ) def set_sentinel_acl_file(self, passwords: dict[str, str] | None = None) -> None: """Write the Sentinel ACL file with appropriate user permissions. diff --git a/src/statuses.py b/src/statuses.py index 7139223..f1dc39b 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -14,8 +14,14 @@ class CharmStatuses(Enum): """Collection of possible statuses for the charm.""" - ACTIVE_IDLE = StatusObject(status="active", message="") - SERVICE_NOT_STARTED = StatusObject(status="blocked", message="Service not started") + ACTIVE_IDLE = StatusObject( + status="active", + message="", + ) + SERVICE_NOT_STARTED = StatusObject( + status="blocked", + message="Service not started", + ) SECRET_ACCESS_ERROR = StatusObject( status="blocked", message="Cannot access configured secret, check permissions", @@ -26,13 +32,20 @@ class CharmStatuses(Enum): message="Waiting for leader to authorize service start", running="async", ) + CONFIGURATION_ERROR = StatusObject( + status="blocked", + message="Configuration error, check logs for details", + running="async", + ) class ClusterStatuses(Enum): """Collection of possible cluster related statuses.""" PASSWORD_UPDATE_FAILED = StatusObject( - status="blocked", message="Failed to update an internal user's password", running="async" + status="blocked", + message="Failed to update an internal user's password", + running="async", ) WAITING_FOR_SENTINEL_DISCOVERY = StatusObject( @@ -58,8 +71,12 @@ class ValkeyServiceStatuses(Enum): """Collection of possible Valkey service related statuses.""" SERVICE_STARTING = StatusObject( - status="maintenance", message="waiting for valkey to start...", running="async" + status="maintenance", + message="waiting for valkey to start...", + running="async", ) SERVICE_NOT_RUNNING = StatusObject( - status="blocked", message="valkey service not running", running="async" + status="blocked", + message="valkey service not running", + running="async", ) diff --git a/src/workload_k8s.py b/src/workload_k8s.py index 9bafed0..11ea9c4 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -42,6 +42,7 @@ def __init__(self, container: ops.Container | None) -> None: self.valkey_service = "valkey" self.sentinel_service = "valkey-sentinel" self.metric_service = "metric_exporter" + self.cli = "valkey-cli" @property @override diff --git a/src/workload_vm.py b/src/workload_vm.py index b36d93b..26a3287 100644 --- a/src/workload_vm.py +++ b/src/workload_vm.py @@ -20,6 +20,8 @@ SNAP_CURRENT_PATH, SNAP_NAME, SNAP_REVISION, + SNAP_SENTINEL_ACL_FILE, + SNAP_SENTINEL_CONFIG_FILE, SNAP_SERVICE, ) @@ -36,8 +38,11 @@ def __init__(self) -> None: self.root = pathops.LocalPath("/") self.config_file = self.root / SNAP_CURRENT_PATH / SNAP_CONFIG_FILE + self.sentinel_config = self.root / SNAP_CURRENT_PATH / SNAP_SENTINEL_CONFIG_FILE self.acl_file = self.root / SNAP_CURRENT_PATH / SNAP_ACL_FILE + self.sentinel_acl_file = self.root / SNAP_CURRENT_PATH / SNAP_SENTINEL_ACL_FILE self.working_dir = self.root / SNAP_COMMON_PATH / "var/lib/charmed-valkey" + self.cli = "charmed-valkey.cli" @property @override diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 81e9b8e..4777f75 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -336,6 +336,23 @@ def fast_forward(juju: jubilant.Juju): juju.model_config({"update-status-hook-interval": old}) +# TODO switch to sentinel once VM is implemented +# def get_primary_ip(juju: jubilant.Juju, app: str) -> str: +# """Get the primary node of the Valkey cluster. + + +# Returns: +# The IP address of the primary node. +# """ +# hostnames = get_cluster_hostnames(juju, app) +# client = create_sentinel_client( +# hostnames=hostnames, +# valkey_user=CharmUsers.VALKEY_ADMIN.value, +# valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), +# sentinel_user=CharmUsers.SENTINEL_CHARM_ADMIN.value, +# sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_CHARM_ADMIN), +# ) +# return client.discover_master("primary")[0] def get_primary_ip(juju: jubilant.Juju, app: str) -> str: """Get the primary node of the Valkey cluster. @@ -343,14 +360,9 @@ def get_primary_ip(juju: jubilant.Juju, app: str) -> str: The IP address of the primary node. """ hostnames = get_cluster_hostnames(juju, app) - client = create_sentinel_client( - hostnames=hostnames, - valkey_user=CharmUsers.VALKEY_ADMIN.value, - valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - sentinel_user=CharmUsers.SENTINEL_CHARM_ADMIN.value, - sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_CHARM_ADMIN), - ) - return client.discover_master("primary")[0] + client = create_valkey_client(hostname=hostnames[0], password=get_password(juju)) + info = client.info("replication") + return hostnames[0] if info["role"] == "master" else info.get("master_host", "") def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN) -> str: diff --git a/tests/integration/vm/test_charm.py b/tests/integration/vm/test_charm.py index eb22aa3..3f0fa35 100644 --- a/tests/integration/vm/test_charm.py +++ b/tests/integration/vm/test_charm.py @@ -28,7 +28,8 @@ logger = logging.getLogger(__name__) -NUM_UNITS = 3 +# Update once scale up is implemented in VM +NUM_UNITS = 1 TEST_KEY = "test_key" TEST_VALUE = "test_value" diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index a163977..9b79bbf 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -83,7 +83,6 @@ def test_start_leader_unit(cloud_spec): with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), - patch("workload_k8s.ValkeyK8sWorkload.mkdir"), ): # generate passwords state_out = ctx.run(ctx.on.leader_elected(), state_in) @@ -131,7 +130,6 @@ def test_start_non_leader_unit(cloud_spec): with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), - patch("workload_k8s.ValkeyK8sWorkload.mkdir"), patch("managers.cluster.ClusterManager.get_primary_ip", return_value="127.1.0.1"), ): state_out = ctx.run(ctx.on.start(), state_in) From 40fb3009e4ef4255b63b86d89f74676cec824df6 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 10 Feb 2026 05:38:57 +0000 Subject: [PATCH 060/282] move spread file to correct position --- tests/spread/{ => k8s}/test_scaling.py/task.yaml | 0 1 file changed, 0 insertions(+), 0 deletions(-) rename tests/spread/{ => k8s}/test_scaling.py/task.yaml (100%) diff --git a/tests/spread/test_scaling.py/task.yaml b/tests/spread/k8s/test_scaling.py/task.yaml similarity index 100% rename from tests/spread/test_scaling.py/task.yaml rename to tests/spread/k8s/test_scaling.py/task.yaml From 50db8520cfe618eb96fc013baafe0d39acb00c69 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 10 Feb 2026 07:43:40 +0000 Subject: [PATCH 061/282] enable sentinel on VM --- src/events/base_events.py | 1 + src/managers/config.py | 7 +++++-- src/workload_vm.py | 7 +++++++ tests/integration/vm/test_charm.py | 2 +- 4 files changed, 14 insertions(+), 3 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 98fd05f..7d61fe2 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -184,6 +184,7 @@ def _on_start(self, event: ops.StartEvent) -> None: self.unit_fully_started.emit() + # TODO check how to trigger if defered without update status event def _on_unit_fully_started(self, event: UnitFullyStarted) -> None: """Handle the unit-fully-started event.""" self.charm.status.set_running_status( diff --git a/src/managers/config.py b/src/managers/config.py index 6568bf9..069ffab 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -22,7 +22,6 @@ CLIENT_PORT, PRIMARY_NAME, QUORUM_NUMBER, - SENTINEL_ACL_FILE, SENTINEL_PORT, CharmUsers, Substrate, @@ -144,7 +143,11 @@ def set_sentinel_config_properties(self, primary_ip: str) -> None: sentinel_config = f"port {SENTINEL_PORT}\n" - sentinel_config += f"aclfile {SENTINEL_ACL_FILE}\n" + # TODO remove once deamonized in snap + if self.state.substrate == Substrate.VM: + sentinel_config += "daemonize yes\n" + + sentinel_config += f"aclfile {self.workload.sentinel_acl_file.as_posix()}\n" # TODO consider adding quorum calculation based on number of units sentinel_config += ( f"sentinel monitor {PRIMARY_NAME} {primary_ip} {CLIENT_PORT} {QUORUM_NUMBER}\n" diff --git a/src/workload_vm.py b/src/workload_vm.py index 26a3287..08bae34 100644 --- a/src/workload_vm.py +++ b/src/workload_vm.py @@ -89,6 +89,13 @@ def install(self, revision: str | None = None, retry_and_raise: bool = True) -> def start(self) -> None: try: self.valkey.start(services=[SNAP_SERVICE]) + # TODO replace with snap service when PR merged + self.exec( + [ + "charmed-valkey.sentinel", + self.sentinel_config.as_posix(), + ] + ) except snap.SnapError as e: logger.exception(str(e)) diff --git a/tests/integration/vm/test_charm.py b/tests/integration/vm/test_charm.py index 3f0fa35..f808eb9 100644 --- a/tests/integration/vm/test_charm.py +++ b/tests/integration/vm/test_charm.py @@ -29,7 +29,7 @@ logger = logging.getLogger(__name__) # Update once scale up is implemented in VM -NUM_UNITS = 1 +NUM_UNITS = 3 TEST_KEY = "test_key" TEST_VALUE = "test_value" From d60a25be63297c630a2c3c3e5976de30d3346733 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 10 Feb 2026 07:44:17 +0000 Subject: [PATCH 062/282] mv cw to the base of integration tests --- tests/integration/{k8s/ha => }/continuous_writes.py | 0 .../{k8s/ha/helpers.py => cw_helpers.py} | 2 +- tests/integration/k8s/ha/test_scaling.py | 13 ++++++------- 3 files changed, 7 insertions(+), 8 deletions(-) rename tests/integration/{k8s/ha => }/continuous_writes.py (100%) rename tests/integration/{k8s/ha/helpers.py => cw_helpers.py} (97%) diff --git a/tests/integration/k8s/ha/continuous_writes.py b/tests/integration/continuous_writes.py similarity index 100% rename from tests/integration/k8s/ha/continuous_writes.py rename to tests/integration/continuous_writes.py diff --git a/tests/integration/k8s/ha/helpers.py b/tests/integration/cw_helpers.py similarity index 97% rename from tests/integration/k8s/ha/helpers.py rename to tests/integration/cw_helpers.py index 3ea3967..df6ccd7 100644 --- a/tests/integration/k8s/ha/helpers.py +++ b/tests/integration/cw_helpers.py @@ -29,7 +29,7 @@ def start_continuous_writes( subprocess.Popen( [ "python3", - "tests/integration/k8s/ha/continuous_writes.py", + "tests/integration/continuous_writes.py", endpoints, valkey_user, valkey_password, diff --git a/tests/integration/k8s/ha/test_scaling.py b/tests/integration/k8s/ha/test_scaling.py index 341159c..11c6676 100644 --- a/tests/integration/k8s/ha/test_scaling.py +++ b/tests/integration/k8s/ha/test_scaling.py @@ -7,6 +7,12 @@ import valkey from literals import CharmUsers +from tests.integration.cw_helpers import ( + assert_continuous_writes_consistent, + assert_continuous_writes_increasing, + start_continuous_writes, + stop_continuous_writes, +) from tests.integration.helpers import ( APP_NAME, IMAGE_RESOURCE, @@ -16,13 +22,6 @@ seed_valkey, ) -from .helpers import ( - assert_continuous_writes_consistent, - assert_continuous_writes_increasing, - start_continuous_writes, - stop_continuous_writes, -) - logger = logging.getLogger(__name__) NUM_UNITS = 3 From 76a9b52aab28d4f4c57acef5ae253c643789d996 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 10 Feb 2026 07:48:32 +0000 Subject: [PATCH 063/282] add scaling tests on VM --- tests/integration/vm/ha/__init__.py | 0 tests/integration/vm/ha/test_scaling.py | 107 ++++++++++++++++++++++ tests/spread/vm/test_scaling.py/task.yaml | 9 ++ 3 files changed, 116 insertions(+) create mode 100644 tests/integration/vm/ha/__init__.py create mode 100644 tests/integration/vm/ha/test_scaling.py create mode 100644 tests/spread/vm/test_scaling.py/task.yaml diff --git a/tests/integration/vm/ha/__init__.py b/tests/integration/vm/ha/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/tests/integration/vm/ha/test_scaling.py b/tests/integration/vm/ha/test_scaling.py new file mode 100644 index 0000000..11c6676 --- /dev/null +++ b/tests/integration/vm/ha/test_scaling.py @@ -0,0 +1,107 @@ +#!/usr/bin/env python3 +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. +import logging + +import jubilant +import valkey + +from literals import CharmUsers +from tests.integration.cw_helpers import ( + assert_continuous_writes_consistent, + assert_continuous_writes_increasing, + start_continuous_writes, + stop_continuous_writes, +) +from tests.integration.helpers import ( + APP_NAME, + IMAGE_RESOURCE, + are_apps_active_and_agents_idle, + get_cluster_hostnames, + get_password, + seed_valkey, +) + +logger = logging.getLogger(__name__) + +NUM_UNITS = 3 +TEST_KEY = "test_key" +TEST_VALUE = "test_value" + + +def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: + """Build the charm-under-test and deploy it with three units.""" + juju.deploy(charm, resources=IMAGE_RESOURCE, num_units=1, trust=True) + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), + timeout=600, + ) + + assert len(juju.status().apps[APP_NAME].units) == 1, ( + "Unexpected number of units after initial deploy" + ) + + +def test_seed_data(juju: jubilant.Juju) -> None: + """Seed some data to the cluster.""" + seed_valkey(juju, target_gb=1) + + +def test_scale_up(juju: jubilant.Juju) -> None: + """Make sure new units are added to the valkey downtime.""" + init_units_count = len(juju.status().apps[APP_NAME].units) + init_endpoints = ",".join(get_cluster_hostnames(juju, APP_NAME)) + # start writing data to the cluster + start_continuous_writes( + endpoints=init_endpoints, + valkey_user=CharmUsers.VALKEY_ADMIN.value, + valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + sentinel_user=CharmUsers.SENTINEL_ADMIN.value, + sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_ADMIN), + ) + + # scale up + juju.add_unit(APP_NAME, num_units=2) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, idle_period=10, unit_count=init_units_count + 2 + ), + timeout=1200, + ) + num_units = len(juju.status().apps[APP_NAME].units) + assert num_units == init_units_count + 2, ( + f"Expected {init_units_count + 2} units, got {num_units}." + ) + + # check if all units have been added to the cluster + endpoints = ",".join(get_cluster_hostnames(juju, APP_NAME)) + + sentinel_client = valkey.Sentinel( + [(host, 26379) for host in endpoints.split(",")], + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + sentinel_kwargs={ + "password": get_password(juju, user=CharmUsers.SENTINEL_ADMIN), + "username": CharmUsers.SENTINEL_ADMIN.value, + }, + ) + master = sentinel_client.master_for("primary") + info = master.info("replication") + connected_slaves = info.get("connected_slaves", 0) + assert connected_slaves == num_units - 1, ( + f"Expected {num_units - 1} connected slaves, got {connected_slaves}." + ) + + assert_continuous_writes_increasing( + endpoints=endpoints, + valkey_user=CharmUsers.VALKEY_ADMIN.value, + valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + sentinel_user=CharmUsers.SENTINEL_ADMIN.value, + sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_ADMIN), + ) + stop_continuous_writes() + assert_continuous_writes_consistent( + endpoints=endpoints, + valkey_user=CharmUsers.VALKEY_ADMIN.value, + valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) diff --git a/tests/spread/vm/test_scaling.py/task.yaml b/tests/spread/vm/test_scaling.py/task.yaml new file mode 100644 index 0000000..e309e66 --- /dev/null +++ b/tests/spread/vm/test_scaling.py/task.yaml @@ -0,0 +1,9 @@ +summary: test_scaling.py +environment: + TEST_MODULE: ha/test_scaling.py +systems: + - self-hosted-linux-amd64-noble-medium +execute: | + tox run -e integration -- "tests/integration/vm/$TEST_MODULE" --alluredir="$SPREAD_TASK/allure-results" +artifacts: + - allure-results From bc3b51b7f540c1f98c7588ac00c8a8815495b796 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 10 Feb 2026 07:48:58 +0000 Subject: [PATCH 064/282] fix typos --- src/events/base_events.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 7d61fe2..b3b4c35 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -184,7 +184,7 @@ def _on_start(self, event: ops.StartEvent) -> None: self.unit_fully_started.emit() - # TODO check how to trigger if defered without update status event + # TODO check how to trigger if deferred without update status event def _on_unit_fully_started(self, event: UnitFullyStarted) -> None: """Handle the unit-fully-started event.""" self.charm.status.set_running_status( From 47f5c1265a4455cdec1f1b43849e8c62353cd75b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 10 Feb 2026 07:49:28 +0000 Subject: [PATCH 065/282] fix typo --- src/managers/config.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/managers/config.py b/src/managers/config.py index 069ffab..1c2ddfe 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -143,7 +143,7 @@ def set_sentinel_config_properties(self, primary_ip: str) -> None: sentinel_config = f"port {SENTINEL_PORT}\n" - # TODO remove once deamonized in snap + # TODO remove once daemonized in snap if self.state.substrate == Substrate.VM: sentinel_config += "daemonize yes\n" From 9a6f877f47dad4ac954f47ea633bd28b7c65d457 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 10 Feb 2026 08:04:59 +0000 Subject: [PATCH 066/282] remove resource from vm test scaling --- tests/integration/vm/ha/test_scaling.py | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/tests/integration/vm/ha/test_scaling.py b/tests/integration/vm/ha/test_scaling.py index 11c6676..dcd3ede 100644 --- a/tests/integration/vm/ha/test_scaling.py +++ b/tests/integration/vm/ha/test_scaling.py @@ -15,7 +15,6 @@ ) from tests.integration.helpers import ( APP_NAME, - IMAGE_RESOURCE, are_apps_active_and_agents_idle, get_cluster_hostnames, get_password, @@ -31,7 +30,7 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: """Build the charm-under-test and deploy it with three units.""" - juju.deploy(charm, resources=IMAGE_RESOURCE, num_units=1, trust=True) + juju.deploy(charm, num_units=1, trust=True) juju.wait( lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), timeout=600, From 1fdc7e99bb5ba1184e7edc6b0080e64cf5478f5e Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 11 Feb 2026 06:41:46 +0000 Subject: [PATCH 067/282] remove scaling comment and update cw to be pythonic --- poetry.lock | 90 +------- pyproject.toml | 1 - tests/integration/conftest.py | 29 +++ tests/integration/continuous_writes.py | 274 +++++++++++++++++------ tests/integration/cw_helpers.py | 20 +- tests/integration/k8s/ha/test_scaling.py | 16 +- tests/integration/vm/ha/test_scaling.py | 17 +- tests/integration/vm/test_charm.py | 1 - 8 files changed, 255 insertions(+), 193 deletions(-) create mode 100644 tests/integration/conftest.py diff --git a/poetry.lock b/poetry.lock index 8e570c8..d1bf741 100644 --- a/poetry.lock +++ b/poetry.lock @@ -60,25 +60,6 @@ files = [ {file = "annotated_types-0.7.0.tar.gz", hash = "sha256:aff07c09a53a08bc8cfccb9c85b05f1aa9a2a6f23728d790723543408344ce89"}, ] -[[package]] -name = "anyio" -version = "4.12.1" -description = "High-level concurrency and networking framework on top of asyncio or Trio" -optional = false -python-versions = ">=3.9" -groups = ["main"] -files = [ - {file = "anyio-4.12.1-py3-none-any.whl", hash = "sha256:d405828884fc140aa80a3c667b8beed277f1dfedec42ba031bd6ac3db606ab6c"}, - {file = "anyio-4.12.1.tar.gz", hash = "sha256:41cfcc3a4c85d3f05c932da7c26d0201ac36f72abd4435ba90d0464a3ffed703"}, -] - -[package.dependencies] -idna = ">=2.8" -typing_extensions = {version = ">=4.5", markers = "python_version < \"3.13\""} - -[package.extras] -trio = ["trio (>=0.31.0) ; python_version < \"3.10\"", "trio (>=0.32.0) ; python_version >= \"3.10\""] - [[package]] name = "attrs" version = "25.4.0" @@ -278,21 +259,6 @@ rich = "*" all = ["pytest_operator (==0.36.0)"] tests = ["pytest_operator (==0.36.0)"] -[[package]] -name = "idna" -version = "3.11" -description = "Internationalized Domain Names in Applications (IDNA)" -optional = false -python-versions = ">=3.8" -groups = ["main"] -files = [ - {file = "idna-3.11-py3-none-any.whl", hash = "sha256:771a87f49d9defaf64091e6e6fe9c18d4833f140bd19464795bc32d966ca37ea"}, - {file = "idna-3.11.tar.gz", hash = "sha256:795dafcc9c04ed0c1fb032c2aa73654d8e8c5023a7df64a53f39190ada629902"}, -] - -[package.extras] -all = ["flake8 (>=7.1.1)", "mypy (>=1.11.2)", "pytest (>=8.3.2)", "ruff (>=0.6.2)"] - [[package]] name = "importlib-metadata" version = "8.7.1" @@ -477,26 +443,6 @@ files = [ dev = ["pre-commit", "tox"] testing = ["coverage", "pytest", "pytest-benchmark"] -[[package]] -name = "protobuf" -version = "6.33.5" -description = "" -optional = false -python-versions = ">=3.9" -groups = ["main"] -files = [ - 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{file = "protobuf-6.33.5-py3-none-any.whl", hash = "sha256:69915a973dd0f60f31a08b8318b73eab2bd6a392c79184b3612226b0a3f8ec02"}, - {file = "protobuf-6.33.5.tar.gz", hash = "sha256:6ddcac2a081f8b7b9642c09406bc6a4290128fce5f471cddd165960bb9119e5c"}, -] - [[package]] name = "pydantic" version = "2.12.5" @@ -900,18 +846,6 @@ files = [ {file = "six-1.17.0.tar.gz", hash = "sha256:ff70335d468e7eb6ec65b95b99d3a2836546063f63acc5171de367e834932a81"}, ] -[[package]] -name = "sniffio" -version = "1.3.1" -description = "Sniff out which async library your code is running under" -optional = false -python-versions = ">=3.7" -groups = ["main"] -files = [ - {file = "sniffio-1.3.1-py3-none-any.whl", hash = "sha256:2f6da418d1f1e0fddd844478f41680e794e6051915791a034ff65e5f100525a2"}, - {file = "sniffio-1.3.1.tar.gz", hash = "sha256:f4324edc670a0f49750a81b895f35c3adb843cca46f0530f79fc1babb23789dc"}, -] - [[package]] name = "tenacity" version = "9.1.2" @@ -971,28 +905,6 @@ files = [ libvalkey = ["libvalkey (>=4.0.1)"] ocsp = ["cryptography (>=36.0.1)", "pyopenssl (==23.2.1)", "requests (>=2.31.0)"] -[[package]] -name = "valkey-glide" -version = "0.0.0" -description = "Valkey GLIDE Async client. Supports Valkey and Redis OSS." -optional = false -python-versions = ">=3.9" -groups = ["main"] -files = [] -develop = false - -[package.dependencies] -anyio = ">=4.9.0" -protobuf = ">=6.20" -sniffio = "*" - -[package.source] -type = "git" -url = "https://github.com/skourta/valkey-glide" -reference = "add-build-rs" -resolved_reference = "5e2dfce07bed84dc8637e1c43aa55b135a76137f" -subdirectory = "python/glide-async" - [[package]] name = "websocket-client" version = "1.9.0" @@ -1033,4 +945,4 @@ type = ["pytest-mypy"] [metadata] lock-version = "2.1" python-versions = "^3.12" -content-hash = "05f3431c740a9805c0ae2b05cd496a779a619f1c9443218d33ed717177cc98b5" +content-hash = "6710246ac0750c8538cb34d54f3465ad67023241c3cc2af36836b9f0a4d11354" diff --git a/pyproject.toml b/pyproject.toml index 4a122fc..f5441fe 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -14,7 +14,6 @@ tenacity = "*" data-platform-helpers = ">=0.1.7" # TODO replace with official release once build from source is possible # https://github.com/valkey-io/valkey-glide/pull/5202 -valkey-glide = { git = "https://github.com/skourta/valkey-glide", subdirectory = "python/glide-async", branch = "add-build-rs" } [tool.poetry.requires-plugins] poetry-plugin-export = ">=1.8" diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py new file mode 100644 index 0000000..119ab26 --- /dev/null +++ b/tests/integration/conftest.py @@ -0,0 +1,29 @@ +# Copyright 2025 Canonical Ltd. +# See LICENSE file for licensing details. + +import logging + +import jubilant +import pytest + +from tests.integration.continuous_writes import ContinuousWrites +from tests.integration.helpers import APP_NAME + +logger = logging.getLogger(__name__) + + +@pytest.fixture(scope="function") +def c_writes(juju: jubilant.Juju): + """Create instance of the ContinuousWrites.""" + app = APP_NAME + logger.debug(f"Creating ContinuousWrites instance for app with name {app}") + return ContinuousWrites(juju, app, log_written_values=True) + + +@pytest.fixture(scope="function") +def c_writes_runner(juju: jubilant.Juju, c_writes: ContinuousWrites): + """Start continuous write operations and clears writes at the end of the test.""" + c_writes.start() + yield + logger.info("Clearing continuous writes after test completion") + logger.info(c_writes.clear()) diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index 7bd723a..6519207 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -1,87 +1,221 @@ #!/usr/bin/env python3 -# Copyright 2025 Canonical Ltd. +# Copyright 2026 Canonical Ltd. # See LICENSE file for licensing details. import logging -import pathlib -import signal -import sys +import os import time +from contextlib import contextmanager +from multiprocessing import Event, Process, Queue, log_to_stderr +from types import SimpleNamespace +from typing import Generator +import jubilant import valkey -from tenacity import RetryError, Retrying, stop_after_attempt, wait_fixed - -SENTINEL_PORT = 26379 +from tenacity import ( + RetryError, + Retrying, + retry, + stop_after_attempt, + stop_after_delay, + wait_fixed, + wait_random, +) + +from literals import CharmUsers +from tests.integration.helpers import get_cluster_hostnames, get_password logger = logging.getLogger(__name__) -WRITES_LAST_WRITTEN_VAL_PATH = "last_written_value" -LOG_FILE_PATH = "log_file" -continue_running = True - - -def continuous_writes( - endpoints: str, - valkey_user: str, - valkey_password: str, - sentinel_user: str, - sentinel_password: str, -) -> None: - key = "cw_key" - count = 0 - - client = valkey.Sentinel( - [(host, SENTINEL_PORT) for host in endpoints.split(",")], - username=valkey_user, - password=valkey_password, - sentinel_kwargs={"password": sentinel_password, "username": sentinel_user}, - ) - master = client.master_for("primary") - - # clean up from previous runs - pathlib.Path(WRITES_LAST_WRITTEN_VAL_PATH).unlink(missing_ok=True) - try: - master.delete(key) - except Exception: - pass - - while continue_running: - count += 1 +class WriteFailedError(Exception): + """Raised when a single write operation has failed.""" + + +class ContinuousWrites: + """Utility class for managing continuous writes to Valkey.""" + + KEY = "cw_key" + LAST_WRITTEN_VAL_PATH = "last_written_value" + SENTINEL_PORT = 26379 + + def __init__( + self, + juju: jubilant.Juju, + app: str, + initial_count: int = 0, + log_written_values: bool = False, + ): + self._juju = juju + self._app = app + self._is_stopped = True + self._event = None + self._queue = None + self._process = None + self._initial_count = initial_count + self._log_written_values = log_written_values + + def _get_config(self) -> SimpleNamespace: + """Fetch current cluster configuration from Juju.""" + return SimpleNamespace( + endpoints=",".join(get_cluster_hostnames(self._juju, app_name=self._app)), + valkey_password=get_password(self._juju, user=CharmUsers.VALKEY_ADMIN), + sentinel_password=get_password(self._juju, user=CharmUsers.SENTINEL_CHARM_ADMIN), + ) + + @contextmanager + def _get_client(self) -> Generator[valkey.Valkey, None, None]: + """Context manager to provide a master client and ensure cleanup.""" + conf = self._get_config() + sentinel = valkey.Sentinel( + [(host, self.SENTINEL_PORT) for host in conf.endpoints.split(",")], + username=CharmUsers.VALKEY_ADMIN.value, + password=conf.valkey_password, + sentinel_kwargs={ + "password": conf.sentinel_password, + "username": CharmUsers.SENTINEL_CHARM_ADMIN.value, + }, + ) + master = sentinel.master_for("primary") + try: + yield master + finally: + # Valkey clients use connection pools, but we ensure logical separation + master.close() + + @retry(wait=wait_fixed(5) + wait_random(0, 5), stop=stop_after_attempt(5)) + def start(self) -> None: + """Run continuous writes in the background.""" + if not self._is_stopped: + self.stop() + + self._is_stopped = False + self._event = Event() + self._queue = Queue() + + self._process = Process( + target=self._run_wrapper, + name="continuous_writes", + args=(self._event, self._queue, self._initial_count, self._log_written_values), + ) + + self.update() # Load initial config into queue + self._process.start() + + def update(self) -> None: + """Update cluster related conf (scaling, password changes).""" + if self._queue: + self._queue.put(self._get_config()) + + @retry(wait=wait_fixed(5) + wait_random(0, 5), stop=stop_after_attempt(5)) + def clear(self) -> SimpleNamespace | None: + """Stop writes and delete the tracking key/file.""" + result = None + if not self._is_stopped: + result = self.stop() + + with self._get_client() as client: + client.delete(self.KEY) + + if os.path.exists(self.LAST_WRITTEN_VAL_PATH): + os.remove(self.LAST_WRITTEN_VAL_PATH) + + return result + + def count(self) -> int: + """Return number of items in the list.""" + with self._get_client() as client: + return client.llen(self.KEY) + + def max_stored_id(self) -> int: + """Return the most recently inserted ID (top of list).""" + with self._get_client() as client: + val = client.lindex(self.KEY, 0) + return int(val) if val else 0 + + @retry(wait=wait_fixed(5) + wait_random(0, 5), stop=stop_after_attempt(5)) + def stop(self) -> SimpleNamespace: + """Stop the background process and return summary statistics.""" + if not self._is_stopped and self._process: + self._event.set() + self._process.join(timeout=30) + self._process.terminate() + self._is_stopped = True + + result = SimpleNamespace() + result.max_stored_id = self.max_stored_id() + result.count = self.count() + + # Retrieve the last ID the worker attempted to write try: - for attempt in Retrying(stop=stop_after_attempt(2), wait=wait_fixed(1)): + for attempt in Retrying(stop=stop_after_delay(10), wait=wait_fixed(2)): with attempt: - result = master.set(key, str(count)) - if not result: - raise ValueError - with open(LOG_FILE_PATH, "a") as log_file: - log_file.write(f"{count}\n") - except RetryError: - pass - - time.sleep(1) - else: - # write last expected written value on disk when terminating - pathlib.Path(WRITES_LAST_WRITTEN_VAL_PATH).write_text(str(count)) - - -def handle_stop_signal(signum, frame) -> None: - global continue_running - continue_running = False + with open(self.LAST_WRITTEN_VAL_PATH, "r") as f: + result.last_expected_id = int(f.read().strip()) + except (RetryError, FileNotFoundError, ValueError): + result.last_expected_id = -1 + + return result + + @staticmethod + def _run_wrapper( + event: Event, data_queue: Queue, starting_number: int, log_written_values: bool = False + ) -> None: + """Entry point for the Process; simplified without unnecessary asyncio.""" + proc_logger = log_to_stderr() + proc_logger.setLevel(logging.INFO) + + def _make_client(conf): + s = valkey.Sentinel( + [(h, ContinuousWrites.SENTINEL_PORT) for h in conf.endpoints.split(",")], + username=CharmUsers.VALKEY_ADMIN.value, + password=conf.valkey_password, + sentinel_kwargs={ + "password": conf.sentinel_password, + "username": CharmUsers.SENTINEL_CHARM_ADMIN.value, + }, + ) + return s.master_for("primary") + + current_val = starting_number + config = data_queue.get(block=True) + client = _make_client(config) + + proc_logger.info(f"Starting continuous writes from {current_val}") - -def main(): - endpoints = sys.argv[1] - valkey_user = sys.argv[2] - valkey_password = sys.argv[3] - sentinel_user = sys.argv[4] - sentinel_password = sys.argv[5] - - # handle the stop signal for a graceful stop of the writes process - signal.signal(signal.SIGTERM, handle_stop_signal) - - continuous_writes(endpoints, valkey_user, valkey_password, sentinel_user, sentinel_password) + try: + while not event.is_set(): + # Check for config updates (e.g. cluster scaling) + if not data_queue.empty(): + config = data_queue.get(block=False) + client = _make_client(config) + + try: + # note LPUSH returns the length of the list after the push + if client.lpush(ContinuousWrites.KEY, current_val): + if log_written_values: + proc_logger.info(f"Wrote value: {current_val}") + current_val += 1 + # Throttle to avoid flooding small test runners + time.sleep(1) + else: + raise WriteFailedError("LPUSH returned 0/None") + except Exception as e: + proc_logger.warning(f"Write failed at {current_val}: {e}") + time.sleep(2) + continue + finally: + # Persistent where we stopped + with open(ContinuousWrites.LAST_WRITTEN_VAL_PATH, "w") as f: + f.write(str(current_val - 1)) + os.fsync(f) if __name__ == "__main__": - main() + # Example usage + juju_env = jubilant.Juju(model="testing") + cw = ContinuousWrites(juju=juju_env, app="valkey", initial_count=100, log_written_values=False) + cw.clear() + cw.start() + time.sleep(10) + print(f"Stats: {cw.clear()}") diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index df6ccd7..1b068d4 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -10,12 +10,15 @@ from tenacity import Retrying, stop_after_attempt, wait_fixed from literals import CLIENT_PORT, SENTINEL_PORT +from tests.integration.continuous_writes import ContinuousWrites logger = logging.getLogger(__name__) -WRITES_LAST_WRITTEN_VAL_PATH = "last_written_value" +# WRITES_LAST_WRITTEN_VAL_PATH = "last_written_value" +# KEY = "cw_key" -KEY = "cw_key" +KEY = ContinuousWrites.KEY +WRITES_LAST_WRITTEN_VAL_PATH = ContinuousWrites.LAST_WRITTEN_VAL_PATH def start_continuous_writes( @@ -60,9 +63,9 @@ def assert_continuous_writes_increasing( sentinel_kwargs={"password": sentinel_password, "username": sentinel_user}, ) master = client.master_for("primary") - writes_count = int(master.get(KEY)) + writes_count = int(master.llen(KEY)) time.sleep(10) - more_writes = int(master.get(KEY)) + more_writes = int(master.llen(KEY)) assert more_writes > writes_count, "Writes not continuing to DB" logger.info("Continuous writes are increasing.") @@ -79,6 +82,9 @@ def assert_continuous_writes_consistent( with open(WRITES_LAST_WRITTEN_VAL_PATH, "r") as f: last_written_value = int(f.read().rstrip()) + if not last_written_value: + raise ValueError("Could not read last written value from file.") + for endpoint in endpoints.split(","): client = valkey.Valkey( host=endpoint, @@ -87,8 +93,12 @@ def assert_continuous_writes_consistent( password=valkey_password, decode_responses=True, ) - last_value = int(client.get(KEY)) + last_value = int(client.lrange(KEY, 0, 0)[0]) + count = int(client.llen(KEY)) assert last_written_value == last_value, ( f"endpoint: {endpoint}, expected value: {last_written_value}, current value: {last_value}" ) + assert count == last_written_value + 1, ( + f"endpoint: {endpoint}, expected count: {last_written_value + 1}, current count: {count}" + ) logger.info(f"Continuous writes are consistent on {endpoint}.") diff --git a/tests/integration/k8s/ha/test_scaling.py b/tests/integration/k8s/ha/test_scaling.py index 11c6676..9585c40 100644 --- a/tests/integration/k8s/ha/test_scaling.py +++ b/tests/integration/k8s/ha/test_scaling.py @@ -10,8 +10,6 @@ from tests.integration.cw_helpers import ( assert_continuous_writes_consistent, assert_continuous_writes_increasing, - start_continuous_writes, - stop_continuous_writes, ) from tests.integration.helpers import ( APP_NAME, @@ -47,18 +45,9 @@ def test_seed_data(juju: jubilant.Juju) -> None: seed_valkey(juju, target_gb=1) -def test_scale_up(juju: jubilant.Juju) -> None: +def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: """Make sure new units are added to the valkey downtime.""" init_units_count = len(juju.status().apps[APP_NAME].units) - init_endpoints = ",".join(get_cluster_hostnames(juju, APP_NAME)) - # start writing data to the cluster - start_continuous_writes( - endpoints=init_endpoints, - valkey_user=CharmUsers.VALKEY_ADMIN.value, - valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - sentinel_user=CharmUsers.SENTINEL_ADMIN.value, - sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_ADMIN), - ) # scale up juju.add_unit(APP_NAME, num_units=2) @@ -99,7 +88,8 @@ def test_scale_up(juju: jubilant.Juju) -> None: sentinel_user=CharmUsers.SENTINEL_ADMIN.value, sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_ADMIN), ) - stop_continuous_writes() + logger.info("Stopping continuous writes after scale up test.") + logger.info(c_writes.stop()) assert_continuous_writes_consistent( endpoints=endpoints, valkey_user=CharmUsers.VALKEY_ADMIN.value, diff --git a/tests/integration/vm/ha/test_scaling.py b/tests/integration/vm/ha/test_scaling.py index dcd3ede..fbd977e 100644 --- a/tests/integration/vm/ha/test_scaling.py +++ b/tests/integration/vm/ha/test_scaling.py @@ -10,8 +10,6 @@ from tests.integration.cw_helpers import ( assert_continuous_writes_consistent, assert_continuous_writes_increasing, - start_continuous_writes, - stop_continuous_writes, ) from tests.integration.helpers import ( APP_NAME, @@ -46,19 +44,9 @@ def test_seed_data(juju: jubilant.Juju) -> None: seed_valkey(juju, target_gb=1) -def test_scale_up(juju: jubilant.Juju) -> None: +def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: """Make sure new units are added to the valkey downtime.""" init_units_count = len(juju.status().apps[APP_NAME].units) - init_endpoints = ",".join(get_cluster_hostnames(juju, APP_NAME)) - # start writing data to the cluster - start_continuous_writes( - endpoints=init_endpoints, - valkey_user=CharmUsers.VALKEY_ADMIN.value, - valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - sentinel_user=CharmUsers.SENTINEL_ADMIN.value, - sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_ADMIN), - ) - # scale up juju.add_unit(APP_NAME, num_units=2) juju.wait( @@ -98,7 +86,8 @@ def test_scale_up(juju: jubilant.Juju) -> None: sentinel_user=CharmUsers.SENTINEL_ADMIN.value, sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_ADMIN), ) - stop_continuous_writes() + logger.info("Stopping continuous writes after scale up test.") + logger.info(c_writes.stop()) assert_continuous_writes_consistent( endpoints=endpoints, valkey_user=CharmUsers.VALKEY_ADMIN.value, diff --git a/tests/integration/vm/test_charm.py b/tests/integration/vm/test_charm.py index f808eb9..eb22aa3 100644 --- a/tests/integration/vm/test_charm.py +++ b/tests/integration/vm/test_charm.py @@ -28,7 +28,6 @@ logger = logging.getLogger(__name__) -# Update once scale up is implemented in VM NUM_UNITS = 3 TEST_KEY = "test_key" TEST_VALUE = "test_value" From 3218f3725c550c7284dfabebb114e49d2ace377e Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 11 Feb 2026 06:46:14 +0000 Subject: [PATCH 068/282] remove unused patch --- tests/unit/test_charm.py | 1 - 1 file changed, 1 deletion(-) diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 9b79bbf..85cb0f8 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -402,7 +402,6 @@ def test_config_changed_leader_unit_valkey_update_fails(cloud_spec): ) with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), - patch("common.client.ValkeyClient.create_client", side_effect=Exception("fail")), patch("core.models.RelationState.update") as mock_update, ): ctx.run(ctx.on.config_changed(), state_in) From e46b5f3b844416e0105892c3b2631bd9eac862b9 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 11 Feb 2026 06:58:48 +0000 Subject: [PATCH 069/282] turn off write logging for CW --- tests/integration/conftest.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py index 119ab26..96946b7 100644 --- a/tests/integration/conftest.py +++ b/tests/integration/conftest.py @@ -17,7 +17,7 @@ def c_writes(juju: jubilant.Juju): """Create instance of the ContinuousWrites.""" app = APP_NAME logger.debug(f"Creating ContinuousWrites instance for app with name {app}") - return ContinuousWrites(juju, app, log_written_values=True) + return ContinuousWrites(juju, app) @pytest.fixture(scope="function") From 7c5afc283efe63b367068f4ccce3784a665f6b00 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 11 Feb 2026 10:07:59 +0000 Subject: [PATCH 070/282] add sentinel as daemon for vm and fix permissions for files --- src/core/base_workload.py | 3 +- src/literals.py | 4 +-- src/managers/config.py | 41 +++++++++++++------------- src/workload_k8s.py | 14 ++++----- src/workload_vm.py | 15 ++++------ tests/integration/continuous_writes.py | 34 +++++++++++++++++---- tests/integration/helpers.py | 28 +++++------------- 7 files changed, 73 insertions(+), 66 deletions(-) diff --git a/src/core/base_workload.py b/src/core/base_workload.py index d9f31fc..9649bfc 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -28,6 +28,7 @@ def __init__(self) -> None: self.sentinel_acl_file: pathops.PathProtocol self.working_dir: pathops.PathProtocol self.cli: str + self.user: str @property @abstractmethod @@ -111,7 +112,7 @@ def write_config_file(self, config: dict[str, str]) -> None: path = self.config_file try: - path.write_text(config_string) + path.write_text(config_string, user=self.user, group=self.user) except ( FileNotFoundError, LookupError, diff --git a/src/literals.py b/src/literals.py index 65b0518..f3ea6ba 100644 --- a/src/literals.py +++ b/src/literals.py @@ -7,12 +7,12 @@ from enum import StrEnum CHARM = "valkey" -CHARM_USER = "valkey" CONTAINER = "valkey" SNAP_NAME = "charmed-valkey" -SNAP_REVISION = 14 +SNAP_REVISION = 16 SNAP_SERVICE = "server" +SNAP_SENTINEL_SERVICE = "sentinel" SNAP_COMMON_PATH = "var/snap/charmed-valkey/common" SNAP_CURRENT_PATH = "var/snap/charmed-valkey/current" SNAP_CONFIG_FILE = "etc/charmed-valkey/valkey.conf" diff --git a/src/managers/config.py b/src/managers/config.py index 1c2ddfe..b88740f 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -17,7 +17,6 @@ from core.base_workload import WorkloadBase from core.cluster_state import ClusterState from literals import ( - CHARM_USER, CHARM_USERS_ROLE_MAP, CLIENT_PORT, PRIMARY_NAME, @@ -118,7 +117,12 @@ def set_acl_file(self, passwords: dict[str, str] | None = None) -> None: if "VALKEY_" not in user.name: continue acl_content += self._get_user_acl_line(user, passwords=passwords) - self.workload.write_file(acl_content, self.workload.acl_file) + self.workload.write_file( + acl_content, + self.workload.acl_file, + user=self.workload.user, + group=self.workload.user, + ) def _get_user_acl_line(self, user: CharmUsers, passwords: dict[str, str] | None = None) -> str: """Generate an ACL line for a given user. @@ -143,10 +147,6 @@ def set_sentinel_config_properties(self, primary_ip: str) -> None: sentinel_config = f"port {SENTINEL_PORT}\n" - # TODO remove once daemonized in snap - if self.state.substrate == Substrate.VM: - sentinel_config += "daemonize yes\n" - sentinel_config += f"aclfile {self.workload.sentinel_acl_file.as_posix()}\n" # TODO consider adding quorum calculation based on number of units sentinel_config += ( @@ -166,20 +166,14 @@ def set_sentinel_config_properties(self, primary_ip: str) -> None: sentinel_config += f"sentinel failover-timeout {PRIMARY_NAME} 180000\n" sentinel_config += f"sentinel parallel-syncs {PRIMARY_NAME} 1\n" - if self.state.substrate == Substrate.K8S: - # on k8s we need to set the ownership of the sentinel config file to the non-root user that the valkey process runs as in order for sentinel to be able to read/write it - self.workload.write_file( - sentinel_config, - self.workload.sentinel_config, - mode=0o600, - user=CHARM_USER, - group=CHARM_USER, - ) - else: - self.workload.write_file( - sentinel_config, - self.workload.sentinel_config, - ) + # on k8s we need to set the ownership of the sentinel config file to the non-root user that the valkey process runs as in order for sentinel to be able to read/write it + self.workload.write_file( + sentinel_config, + self.workload.sentinel_config, + mode=0o600, + user=self.workload.user, + group=self.workload.user, + ) def set_sentinel_acl_file(self, passwords: dict[str, str] | None = None) -> None: """Write the Sentinel ACL file with appropriate user permissions. @@ -196,7 +190,12 @@ def set_sentinel_acl_file(self, passwords: dict[str, str] | None = None) -> None if "VALKEY_" in user.name: continue acl_content += self._get_user_acl_line(user, passwords=passwords) - self.workload.write_file(acl_content, self.workload.sentinel_acl_file) + self.workload.write_file( + acl_content, + self.workload.sentinel_acl_file, + user=self.workload.user, + group=self.workload.user, + ) def generate_password(self) -> str: """Create randomized string for use as app passwords. diff --git a/src/workload_k8s.py b/src/workload_k8s.py index 11ea9c4..5fe5482 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -15,7 +15,6 @@ from literals import ( ACL_FILE, CHARM, - CHARM_USER, CONFIG_FILE, SENTINEL_ACL_FILE, SENTINEL_CONFIG_FILE, @@ -43,6 +42,7 @@ def __init__(self, container: ops.Container | None) -> None: self.sentinel_service = "valkey-sentinel" self.metric_service = "metric_exporter" self.cli = "valkey-cli" + self.user = "valkey" @property @override @@ -60,24 +60,24 @@ def pebble_layer(self) -> ops.pebble.Layer: "override": "replace", "summary": "Valkey service", "command": f"valkey-server {self.config_file.as_posix()}", - "user": CHARM_USER, - "group": CHARM_USER, + "user": self.user, + "group": self.user, "startup": "enabled", }, self.sentinel_service: { "override": "replace", "summary": "Valkey sentinel service", "command": f"valkey-sentinel {self.sentinel_config.as_posix()}", - "user": CHARM_USER, - "group": CHARM_USER, + "user": self.user, + "group": self.user, "startup": "enabled", }, self.metric_service: { "override": "replace", "summary": "Valkey metric exporter", "command": "bin/redis_exporter", - "user": CHARM_USER, - "group": CHARM_USER, + "user": self.user, + "group": self.user, "startup": "enabled", }, }, diff --git a/src/workload_vm.py b/src/workload_vm.py index 08bae34..fdfd8ed 100644 --- a/src/workload_vm.py +++ b/src/workload_vm.py @@ -22,6 +22,7 @@ SNAP_REVISION, SNAP_SENTINEL_ACL_FILE, SNAP_SENTINEL_CONFIG_FILE, + SNAP_SENTINEL_SERVICE, SNAP_SERVICE, ) @@ -43,6 +44,7 @@ def __init__(self) -> None: self.sentinel_acl_file = self.root / SNAP_CURRENT_PATH / SNAP_SENTINEL_ACL_FILE self.working_dir = self.root / SNAP_COMMON_PATH / "var/lib/charmed-valkey" self.cli = "charmed-valkey.cli" + self.user = "snap_daemon" @property @override @@ -88,14 +90,7 @@ def install(self, revision: str | None = None, retry_and_raise: bool = True) -> @override def start(self) -> None: try: - self.valkey.start(services=[SNAP_SERVICE]) - # TODO replace with snap service when PR merged - self.exec( - [ - "charmed-valkey.sentinel", - self.sentinel_config.as_posix(), - ] - ) + self.valkey.start(services=[SNAP_SERVICE, SNAP_SENTINEL_SERVICE]) except snap.SnapError as e: logger.exception(str(e)) @@ -122,6 +117,8 @@ def exec(self, command: List[str]) -> tuple[str, str | None]: def alive(self) -> bool: """Check if the Valkey service is running.""" try: - return bool(self.valkey.services[SNAP_SERVICE]["active"]) + return bool(self.valkey.services[SNAP_SERVICE]["active"]) and bool( + self.valkey.services[SNAP_SENTINEL_SERVICE]["active"] + ) except KeyError: return False diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index 6519207..ea1ae44 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -45,6 +45,7 @@ def __init__( app: str, initial_count: int = 0, log_written_values: bool = False, + in_between_sleep: float = 1, ): self._juju = juju self._app = app @@ -54,6 +55,7 @@ def __init__( self._process = None self._initial_count = initial_count self._log_written_values = log_written_values + self._in_between_sleep = in_between_sleep def _get_config(self) -> SimpleNamespace: """Fetch current cluster configuration from Juju.""" @@ -96,7 +98,13 @@ def start(self) -> None: self._process = Process( target=self._run_wrapper, name="continuous_writes", - args=(self._event, self._queue, self._initial_count, self._log_written_values), + args=( + self._event, + self._queue, + self._initial_count, + self._log_written_values, + self._in_between_sleep, + ), ) self.update() # Load initial config into queue @@ -159,7 +167,11 @@ def stop(self) -> SimpleNamespace: @staticmethod def _run_wrapper( - event: Event, data_queue: Queue, starting_number: int, log_written_values: bool = False + event: Event, + data_queue: Queue, + starting_number: int, + log_written_values: bool = False, + in_between_sleep: float = 1, ) -> None: """Entry point for the Process; simplified without unnecessary asyncio.""" proc_logger = log_to_stderr() @@ -197,7 +209,7 @@ def _make_client(conf): proc_logger.info(f"Wrote value: {current_val}") current_val += 1 # Throttle to avoid flooding small test runners - time.sleep(1) + time.sleep(in_between_sleep) else: raise WriteFailedError("LPUSH returned 0/None") except Exception as e: @@ -214,8 +226,18 @@ def _make_client(conf): if __name__ == "__main__": # Example usage juju_env = jubilant.Juju(model="testing") - cw = ContinuousWrites(juju=juju_env, app="valkey", initial_count=100, log_written_values=False) + cw = ContinuousWrites( + juju=juju_env, + app="valkey", + initial_count=100, + log_written_values=True, + in_between_sleep=1, + ) cw.clear() cw.start() - time.sleep(10) - print(f"Stats: {cw.clear()}") + # continue until manually stopped by ctrl+c or by calling cw.stop() from another process + try: + while True: + time.sleep(1) + except KeyboardInterrupt: + print(f"Stats: {cw.clear()}") diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 4777f75..81e9b8e 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -336,23 +336,6 @@ def fast_forward(juju: jubilant.Juju): juju.model_config({"update-status-hook-interval": old}) -# TODO switch to sentinel once VM is implemented -# def get_primary_ip(juju: jubilant.Juju, app: str) -> str: -# """Get the primary node of the Valkey cluster. - - -# Returns: -# The IP address of the primary node. -# """ -# hostnames = get_cluster_hostnames(juju, app) -# client = create_sentinel_client( -# hostnames=hostnames, -# valkey_user=CharmUsers.VALKEY_ADMIN.value, -# valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), -# sentinel_user=CharmUsers.SENTINEL_CHARM_ADMIN.value, -# sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_CHARM_ADMIN), -# ) -# return client.discover_master("primary")[0] def get_primary_ip(juju: jubilant.Juju, app: str) -> str: """Get the primary node of the Valkey cluster. @@ -360,9 +343,14 @@ def get_primary_ip(juju: jubilant.Juju, app: str) -> str: The IP address of the primary node. """ hostnames = get_cluster_hostnames(juju, app) - client = create_valkey_client(hostname=hostnames[0], password=get_password(juju)) - info = client.info("replication") - return hostnames[0] if info["role"] == "master" else info.get("master_host", "") + client = create_sentinel_client( + hostnames=hostnames, + valkey_user=CharmUsers.VALKEY_ADMIN.value, + valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + sentinel_user=CharmUsers.SENTINEL_CHARM_ADMIN.value, + sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_CHARM_ADMIN), + ) + return client.discover_master("primary")[0] def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN) -> str: From 5244669c965295a416b767c25d8ea8a598803683 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 11 Feb 2026 12:01:53 +0000 Subject: [PATCH 071/282] fix role for valkey sentinel user --- src/literals.py | 2 +- src/managers/config.py | 8 ++++---- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/src/literals.py b/src/literals.py index f3ea6ba..60dccb3 100644 --- a/src/literals.py +++ b/src/literals.py @@ -56,7 +56,7 @@ class CharmUsers(StrEnum): CHARM_USERS_ROLE_MAP = { CharmUsers.VALKEY_ADMIN: "~* +@all", - CharmUsers.VALKEY_SENTINEL: "+client +config +info +publish +subscribe +monitor +ping +replicaof +failover +script|kill +multi +exec &__sentinel__:hello", + CharmUsers.VALKEY_SENTINEL: "+subscribe +publish +failover +script|kill +ping +info +multi +slaveof +config +client +exec &__sentinel__:hello", CharmUsers.VALKEY_REPLICA: "+psync +replconf +ping", CharmUsers.VALKEY_MONITORING: "-@all +@connection +memory -readonly +strlen +config|get +xinfo +pfcount -quit +zcard +type +xlen -readwrite -command +client -wait +scard +llen +hlen +get +eval +slowlog +cluster|info +cluster|slots +cluster|nodes -hello -echo +info +latency +scan -reset -auth -asking", CharmUsers.SENTINEL_ADMIN: "~* +@all", diff --git a/src/managers/config.py b/src/managers/config.py index b88740f..d72d83f 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -90,10 +90,10 @@ def get_config_properties(self, primary_ip: str) -> dict[str, str]: # set replicaof logger.debug("Setting replicaof to primary %s", primary_ip) config_properties["replicaof"] = f"{primary_ip} {CLIENT_PORT}" - config_properties["primaryuser"] = CharmUsers.VALKEY_REPLICA.value - config_properties["primaryauth"] = self.state.cluster.internal_users_credentials.get( - CharmUsers.VALKEY_REPLICA.value, "" - ) + config_properties["primaryuser"] = CharmUsers.VALKEY_REPLICA.value + config_properties["primaryauth"] = self.state.cluster.internal_users_credentials.get( + CharmUsers.VALKEY_REPLICA.value, "" + ) return config_properties From 9a0a081df8a4d4c1fe2acde101b9a5982a498a4d Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 12 Feb 2026 05:19:36 +0000 Subject: [PATCH 072/282] update to the new rock and its user --- metadata.yaml | 2 +- src/workload_k8s.py | 2 +- tests/unit/test_charm.py | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/metadata.yaml b/metadata.yaml index ecb700c..69e11f4 100644 --- a/metadata.yaml +++ b/metadata.yaml @@ -27,7 +27,7 @@ resources: valkey-image: type: oci-image description: OCI Image for Valkey - upstream-source: ghcr.io/canonical/valkey@sha256:3f884d584eac51f3794d3538861f84e5f9e866b890ae0869deb7e4df6fc8eb21 + upstream-source: ghcr.io/canonical/valkey@sha256:bb8166ff96c5159ed0ab04e49a7b3e5b6a074cbd90ec66baf96e4d03e2fd7c90 peers: valkey-peers: diff --git a/src/workload_k8s.py b/src/workload_k8s.py index 5fe5482..c991e32 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -42,7 +42,7 @@ def __init__(self, container: ops.Container | None) -> None: self.sentinel_service = "valkey-sentinel" self.metric_service = "metric_exporter" self.cli = "valkey-cli" - self.user = "valkey" + self.user = "_daemon_" @property @override diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 85cb0f8..5605cd1 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -22,7 +22,7 @@ from .helpers import status_is -CHARM_USER = "valkey" +CHARM_USER = "_daemon_" CONTAINER = "valkey" SERVICE_VALKEY = "valkey" SERVICE_METRIC_EXPORTER = "metric_exporter" From 60504e26e50fc34551c66abd17d0ab27c88102a3 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 12 Feb 2026 05:20:04 +0000 Subject: [PATCH 073/282] only log the command no arguments to avoid leaking secrets --- src/managers/cluster.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index cccd778..3760cc4 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -199,9 +199,9 @@ def _exec_cli_command( password, ] + command output, error = self.workload.exec(cli_command) - logger.debug("Executed command: %s, got output: %s", " ".join(command), output) + logger.debug("Executed command: %s, got output: %s", " ".join(command[0]), output) if error: - logger.error("Error output from command '%s': %s", " ".join(command), error) + logger.error("Error output from command '%s': %s", " ".join(command[0]), error) return output, error def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: From ea713537486540f1335589c6cf3c414a3a8be38c Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 13 Feb 2026 07:19:44 +0000 Subject: [PATCH 074/282] refactored start procedure and added rene feedback --- src/charm.py | 2 + src/common/client.py | 107 ++++++++--------------- src/core/cluster_state.py | 5 ++ src/core/models.py | 7 +- src/events/base_events.py | 165 ++++++++++++----------------------- src/literals.py | 9 ++ src/managers/cluster.py | 177 ++++++++++++-------------------------- src/managers/sentinel.py | 116 +++++++++++++++++++++++++ src/statuses.py | 4 - src/workload_vm.py | 1 - 10 files changed, 284 insertions(+), 309 deletions(-) create mode 100644 src/managers/sentinel.py diff --git a/src/charm.py b/src/charm.py index a55e539..c920986 100755 --- a/src/charm.py +++ b/src/charm.py @@ -14,6 +14,7 @@ from literals import CONTAINER, Substrate from managers.cluster import ClusterManager from managers.config import ConfigManager +from managers.sentinel import SentinelManager from workload_k8s import ValkeyK8sWorkload from workload_vm import ValkeyVmWorkload @@ -42,6 +43,7 @@ def __init__(self, *args) -> None: # --- MANAGERS --- self.cluster_manager = ClusterManager(state=self.state, workload=self.workload) self.config_manager = ConfigManager(state=self.state, workload=self.workload) + self.sentinel_manager = SentinelManager(state=self.state, workload=self.workload) # --- STATUS HANDLER --- self.status = StatusHandler( diff --git a/src/common/client.py b/src/common/client.py index fef79e8..78e57f5 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -3,23 +3,11 @@ """ValkeyClient utility class to connect to valkey servers.""" -import asyncio import logging -from typing import Any +from typing import Literal -from glide import ( - GlideClient, - GlideClientConfiguration, - NodeAddress, - ServerCredentials, -) - -from common.exceptions import ( - ValkeyACLLoadError, - ValkeyConfigSetError, - ValkeyCustomCommandError, -) -from literals import CLIENT_PORT +from core.base_workload import WorkloadBase +from literals import CLIENT_PORT, SENTINEL_PORT logger = logging.getLogger(__name__) @@ -31,67 +19,46 @@ def __init__( self, username: str, password: str, - hosts: list[str], + workload: WorkloadBase, + connect_to: Literal["valkey", "sentinel"] = "valkey", ): - self.hosts = hosts - self.user = username + self.username = username self.password = password + self.workload = workload + self.connect_to = connect_to - async def create_client(self) -> GlideClient: - """Initialize the Valkey client.""" - addresses = [NodeAddress(host=host, port=CLIENT_PORT) for host in self.hosts] - credentials = ServerCredentials(username=self.user, password=self.password) - client_config = GlideClientConfiguration( - addresses, - credentials=credentials, - request_timeout=1000, # in milliseconds - ) - return await GlideClient.create(client_config) - - async def _run_custom_command(self, command: list[str]) -> Any: - """Run a custom command on the Valkey client. + def exec_cli_command( + self, + command: list[str], + hostname: str | None = None, + ) -> tuple[str, str | None]: + """Execute a Valkey CLI command on the server. Args: - command (list[str]): The command to run as a list of strings. + command (list[str]): The CLI command to execute, as a list of arguments. + hostname (str | None): The hostname to connect to. If None, defaults to the private IP of the unit. Returns: - Any result from the command. - """ - client = None - try: - client = await self.create_client() - result = await asyncio.wait_for(client.custom_command(command), timeout=5) - return result - # TODO refine exception handling - except Exception as e: - logger.error("Error running custom command: %s", e) - raise ValkeyCustomCommandError(f"Could not run custom command: {e}") - finally: - if client: - await client.close() + tuple[str, str | None]: The standard output and standard error from the command execution. - def reload_acl(self) -> None: - """Load ACL content to the Valkey server.""" - try: - result = asyncio.run(self._run_custom_command(["ACL", "LOAD"])) - logger.debug(f"ACL load result: {result}") - except ValkeyCustomCommandError as e: - logger.error(f"Error loading ACL: {e}") - raise ValkeyACLLoadError(f"Could not load ACL: {e}") - - def set_runtime_config(self, config_properties: dict[str, str]) -> None: - """Set configuration properties on the Valkey server. - - Args: - config_properties (dict[str, str]): Configuration properties to set. + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute. """ - try: - command = ["CONFIG", "SET"] - for key, value in config_properties.items(): - command.append(key) - command.append(value) - result = asyncio.run(self._run_custom_command(command)) - logger.debug("Config set result: %s", result) - except ValkeyCustomCommandError as e: - logger.error("Error setting config: %s", e) - raise ValkeyConfigSetError(f"Could not set config: {e}") + if not hostname: + hostname = self.workload.get_private_ip() + port = CLIENT_PORT if self.connect_to == "valkey" else SENTINEL_PORT + user = self.username + password = self.password + cli_command: list[str] = [ + self.workload.cli, + "-h", + hostname, + "-p", + str(port), + "--user", + user, + "--pass", + password, + ] + command + output, error = self.workload.exec(cli_command) + return output, error diff --git a/src/core/cluster_state.py b/src/core/cluster_state.py index f1993b5..b11b635 100644 --- a/src/core/cluster_state.py +++ b/src/core/cluster_state.py @@ -131,3 +131,8 @@ def get_secret_from_id(self, secret_id: str, refresh: bool = False) -> dict[str, raise return secret_content + + @property + def number_units_started(self) -> int: + """Return the number of units in the cluster that have their Valkey server started.""" + return len([unit for unit in self.servers if unit.model and unit.is_started]) diff --git a/src/core/models.py b/src/core/models.py index 273c87f..642a628 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -18,7 +18,7 @@ from pydantic import Field from typing_extensions import Annotated -from literals import CharmUsers +from literals import CharmUsers, StartState logger = logging.getLogger(__name__) @@ -43,9 +43,10 @@ class PeerUnitModel(PeerModel): """Model for the peer unit data.""" charmed_operator_password: InternalUsersSecret = Field(default="") - started: bool = Field(default=False) + start_state: str = Field(default=StartState.NOT_STARTED.value) hostname: str = Field(default="") private_ip: str = Field(default="") + request_start_lock: bool = Field(default=False) class RelationState: @@ -117,7 +118,7 @@ def unit_name(self) -> str: @property def is_started(self) -> bool: """Check if the unit has started.""" - return self.model.started if self.model else False + return self.model.start_state == StartState.STARTED.value if self.model else False @property def valkey_admin_password(self) -> str: diff --git a/src/events/base_events.py b/src/events/base_events.py index b3b4c35..a74d12b 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -17,6 +17,7 @@ INTERNAL_USERS_SECRET_LABEL_SUFFIX, PEER_RELATION, CharmUsers, + StartState, Substrate, ) from statuses import CharmStatuses, ClusterStatuses, ValkeyServiceStatuses @@ -47,9 +48,6 @@ def __init__(self, charm: "ValkeyCharm"): self.framework.observe(self.charm.on.install, self._on_install) self.framework.observe(self.charm.on.start, self._on_start) - self.framework.observe( - self.charm.on[PEER_RELATION].relation_joined, self._on_peer_relation_joined - ) self.framework.observe( self.charm.on[PEER_RELATION].relation_changed, self._on_peer_relation_changed ) @@ -77,55 +75,39 @@ def _on_start(self, event: ops.StartEvent) -> None: event.defer() return - if not self.charm.unit.is_leader(): - if ( - not self.charm.state.cluster.internal_users_credentials - or not self.charm.cluster_manager.number_units_started - ): - logger.info( - "Non-leader unit waiting for leader to set primary and internal user credentials" - ) - self.charm.status.set_running_status( - ClusterStatuses.WAITING_FOR_PRIMARY_START.value, - scope="unit", - component_name=self.charm.cluster_manager.name, - statuses_state=self.charm.state.statuses, - ) - event.defer() - return + if self.charm.unit.is_leader(): + self._start_services(event, primary_ip=self.charm.workload.get_private_ip()) + logger.info("Services started") + self.charm.state.unit_server.update({"start_state": StartState.STARTED.value}) + return - self.charm.state.statuses.delete( - ClusterStatuses.WAITING_FOR_PRIMARY_START.value, - scope="unit", - component=self.charm.cluster_manager.name, - ) - if self.charm.state.cluster.model.starting_member != self.charm.unit.name: - logger.info("Non-leader unit waiting for leader to choose it as starting member") - self.charm.status.set_running_status( - CharmStatuses.WAITING_TO_START.value, - scope="unit", - component_name=self.charm.cluster_manager.name, - statuses_state=self.charm.state.statuses, - ) - event.defer() - return - self.charm.state.statuses.delete( - CharmStatuses.WAITING_TO_START.value, - scope="unit", - component=self.charm.cluster_manager.name, + if ( + not self.charm.state.cluster.internal_users_credentials + or not self.charm.state.number_units_started + ): + logger.info( + "Non-leader unit waiting for leader to set primary and internal user credentials" ) + event.defer() + return - if not ( - primary_ip := ( - self.charm.workload.get_private_ip() - if self.charm.unit.is_leader() - else self.charm.cluster_manager.get_primary_ip() - ) - ): + self.charm.state.unit_server.update({"request_start_lock": True}) + + if self.charm.state.cluster.model.starting_member != self.charm.unit.name: + logger.info("Non-leader unit waiting for leader to choose it as starting member") + event.defer() + return + + if not (primary_ip := (self.charm.sentinel_manager.get_primary_ip())): logger.error("Primary IP not found. Deferring start event.") event.defer() return + self._start_services(event, primary_ip=primary_ip) + self.unit_fully_started.emit() + + def _start_services(self, event: ops.StartEvent, primary_ip: str) -> None: + """Start Valkey and Sentinel services.""" try: self.charm.config_manager.update_local_valkey_admin() self.charm.config_manager.set_config_properties(primary_ip=primary_ip) @@ -177,81 +159,42 @@ def _on_start(self, event: ops.StartEvent) -> None: scope="unit", component=self.charm.cluster_manager.name, ) - if self.charm.unit.is_leader(): - logger.info("Services started") - self.charm.state.unit_server.update({"started": True}) - return - - self.unit_fully_started.emit() # TODO check how to trigger if deferred without update status event def _on_unit_fully_started(self, event: UnitFullyStarted) -> None: """Handle the unit-fully-started event.""" - self.charm.status.set_running_status( - ClusterStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value, - scope="unit", - component_name=self.charm.cluster_manager.name, - statuses_state=self.charm.state.statuses, - ) - self.charm.status.set_running_status( - ClusterStatuses.WAITING_FOR_REPLICA_SYNC.value, - scope="unit", - component_name=self.charm.cluster_manager.name, - statuses_state=self.charm.state.statuses, - ) - - if not self.charm.cluster_manager.is_sentinel_discovered(): + # Only ran on non-leader units when starting replicas + if not self.charm.sentinel_manager.is_sentinel_discovered(): logger.info("Sentinel service not yet discovered by other units. Deferring event.") + self.charm.state.unit_server.update( + {"start_state": StartState.STARTING_WAITING_SENTINEL.value} + ) event.defer() return - self.charm.state.statuses.delete( - ClusterStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value, - scope="unit", - component=self.charm.cluster_manager.name, - ) - if not self.charm.cluster_manager.is_replica_synced(): logger.info("Replica not yet synced. Deferring event.") + self.charm.state.unit_server.update( + {"start_state": StartState.STARTING_WAITING_REPLICA_SYNC.value} + ) event.defer() return - self.charm.state.statuses.delete( - ClusterStatuses.WAITING_FOR_REPLICA_SYNC.value, - scope="unit", - component=self.charm.cluster_manager.name, - ) - logger.info("Services started") - self.charm.state.unit_server.update({"started": True}) - - def _on_peer_relation_joined(self, event: ops.RelationJoinedEvent) -> None: - """Handle event received by all units when a new unit joins the cluster relation.""" - if not self.charm.unit.is_leader() or not event.unit: - return - - logger.debug("Peer relation joined by %s", event.unit.name) - - if not self.charm.state.unit_server.is_started: - logger.info("Primary member has not started yet. Deferring event.") - event.defer() - return - - if self.charm.state.cluster.model.starting_member: - logger.debug( - "%s is already starting. Deferring relation joined event for %s", - self.charm.state.cluster.model.starting_member, - event.unit.name, - ) - event.defer() - return - self.charm.state.cluster.update({"starting_member": event.unit.name}) + self.charm.state.unit_server.update( + {"start_state": StartState.STARTED.value, "request_start_lock": False} + ) def _on_peer_relation_changed(self, event: ops.RelationChangedEvent) -> None: """Handle event received by all units when a unit's relation data changes.""" - logger.debug( - "Starting member is currently %s", self.charm.state.cluster.model.starting_member - ) + if not self.charm.unit.is_leader(): + return + + units_requesting_start = [ + unit.unit_name + for unit in self.charm.state.servers + if unit.model and unit.model.request_start_lock + ] starting_unit = next( ( unit @@ -261,19 +204,25 @@ def _on_peer_relation_changed(self, event: ops.RelationChangedEvent) -> None: None, ) logger.debug( - "Starting unit has started: %s", + "Starting unit %s has started: %s", + self.charm.state.cluster.model.starting_member, starting_unit.is_started if starting_unit else "No starting unit", ) - if ( + if not units_requesting_start or ( + # if the starting member has not started yet, we want to wait for it to start instead of choosing another unit that requested start self.charm.state.cluster.model.starting_member and starting_unit - and starting_unit.is_started + and not starting_unit.is_started ): logger.debug( - "Starting member %s has started. Clearing starting member field.", + "Starting member %s has not started yet. Units requesting start: %s. ", self.charm.state.cluster.model.starting_member, + units_requesting_start, ) - self.charm.state.cluster.update({"starting_member": ""}) + + self.charm.state.cluster.update( + {"starting_member": units_requesting_start[0] if units_requesting_start else ""} + ) def _on_update_status(self, event: ops.UpdateStatusEvent) -> None: """Handle the update-status event.""" diff --git a/src/literals.py b/src/literals.py index 60dccb3..bab1fc8 100644 --- a/src/literals.py +++ b/src/literals.py @@ -69,3 +69,12 @@ class Substrate(StrEnum): VM = "vm" K8S = "k8s" + + +class StartState(StrEnum): + """Start states for the service.""" + + NOT_STARTED = "not_started" + STARTING_WAITING_SENTINEL = "starting_waiting_sentinel" + STARTING_WAITING_REPLICA_SYNC = "starting_waiting_replica_sync" + STARTED = "started" diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 3760cc4..0c81cd8 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -5,13 +5,13 @@ """Manager for all cluster related tasks.""" import logging -from typing import Literal import tenacity from data_platform_helpers.advanced_statuses.models import StatusObject from data_platform_helpers.advanced_statuses.protocol import ManagerStatusProtocol from data_platform_helpers.advanced_statuses.types import Scope +from common.client import ValkeyClient from common.exceptions import ( ValkeyACLLoadError, ValkeyConfigSetError, @@ -19,8 +19,8 @@ ) from core.base_workload import WorkloadBase from core.cluster_state import ClusterState -from literals import CLIENT_PORT, PRIMARY_NAME, SENTINEL_PORT, CharmUsers -from statuses import CharmStatuses +from literals import CharmUsers, StartState +from statuses import CharmStatuses, ClusterStatuses logger = logging.getLogger(__name__) @@ -35,27 +35,33 @@ def __init__(self, state: ClusterState, workload: WorkloadBase): self.state = state self.workload = workload self.admin_user = CharmUsers.VALKEY_ADMIN.value - self.admin_password = self.state.unit_server.valkey_admin_password @property - def number_units_started(self) -> int: - """Return the number of units in the cluster that have their Valkey server started.""" - return len([unit for unit in self.state.servers if unit.model and unit.model.started]) + def admin_password(self) -> str: + """Get the password of the admin user for the Valkey cluster.""" + return self.state.unit_server.valkey_admin_password def reload_acl_file(self) -> None: """Reload the ACL file into the cluster.""" try: - self._exec_cli_command(["acl", "load"]) + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + workload=self.workload, + ) + client.exec_cli_command(["acl", "load"]) except ValkeyWorkloadCommandError: raise ValkeyACLLoadError("Could not load ACL file into Valkey cluster.") def update_primary_auth(self) -> None: """Update the primaryauth runtime configuration on the Valkey server.""" - if self.get_primary_ip() == self.state.unit_server.model.private_ip: - logger.info("Current unit is primary; no need to update primaryauth") - return + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + workload=self.workload, + ) try: - self._exec_cli_command( + client.exec_cli_command( [ "config", "set", @@ -69,38 +75,6 @@ def update_primary_auth(self) -> None: except ValkeyWorkloadCommandError: raise ValkeyConfigSetError("Could not set primaryauth on Valkey server.") - @tenacity.retry( - wait=tenacity.wait_fixed(5), - stop=tenacity.stop_after_attempt(5), - retry=tenacity.retry_if_result(lambda result: result is False), - reraise=True, - ) - def is_sentinel_discovered(self) -> bool: - """Check if the sentinel of the local unit was discovered by the other sentinels in the cluster.""" - # list of active sentinels: units with started flag true - active_sentinels = [ - unit.model.private_ip - for unit in self.state.servers - if unit.model - and unit.model.started - and unit.model.private_ip != self.state.unit_server.model.private_ip - ] - - for sentinel_ip in active_sentinels: - try: - output, _ = self._exec_cli_command( - command=["sentinel", "sentinels", PRIMARY_NAME], - hostname=sentinel_ip, - connect_to="sentinel", - ) - if self.state.unit_server.model.private_ip not in output: - logger.info(f"Sentinel at {sentinel_ip} has discovered this sentinel") - return False - except ValkeyWorkloadCommandError: - logger.warning(f"Could not query sentinel at {sentinel_ip} for primary discovery.") - continue - return True - @tenacity.retry( wait=tenacity.wait_fixed(5), stop=tenacity.stop_after_attempt(5), @@ -109,12 +83,14 @@ def is_sentinel_discovered(self) -> bool: ) def is_replica_synced(self) -> bool: """Check if the replica is synced with the primary.""" - if self.get_primary_ip() == self.state.unit_server.model.private_ip: - logger.info("Current unit is primary; no need to check replica sync") - return True + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + workload=self.workload, + ) try: output = ( - self._exec_cli_command( + client.exec_cli_command( command=["role"], )[0] .strip() @@ -129,81 +105,6 @@ def is_replica_synced(self) -> bool: logger.warning("Could not determine replica sync status from Valkey server.") return False - def get_primary_ip(self) -> str | None: - """Get the IP address of the primary node in the cluster.""" - started_servers = [ - unit for unit in self.state.servers if unit.model and unit.model.started - ] - - for unit in started_servers: - try: - output = self._exec_cli_command( - ["sentinel", "get-master-addr-by-name", PRIMARY_NAME], - connect_to="sentinel", - hostname=unit.model.private_ip, - )[0] - primary_ip = output.strip().split()[0] - logger.info(f"Primary IP address is {primary_ip}") - return primary_ip - except (IndexError, ValkeyWorkloadCommandError): - logger.error("Could not get primary IP from sentinel output.") - - logger.error( - "Could not determine primary IP from sentinels. Number of started servers: %d.", - len(started_servers), - ) - - def _exec_cli_command( - self, - command: list[str], - hostname: str | None = None, - connect_to: Literal["valkey", "sentinel"] = "valkey", - ) -> tuple[str, str | None]: - """Execute a Valkey CLI command on the server. - - Args: - command (list[str]): The CLI command to execute, as a list of arguments. - hostname (str | None): The hostname to connect to. Defaults to private ip of unit. - connect_to (Literal["valkey", "sentinel"]): Whether to connect to the valkey server or sentinel for executing the command. Defaults to "valkey". - - Returns: - tuple[str, str | None]: The standard output and standard error from the command execution. - - Raises: - ValkeyWorkloadCommandError: If the CLI command fails to execute. - """ - if not hostname: - hostname = self.workload.get_private_ip() - port = CLIENT_PORT if connect_to == "valkey" else SENTINEL_PORT - user = ( - CharmUsers.VALKEY_ADMIN.value - if connect_to == "valkey" - else CharmUsers.SENTINEL_CHARM_ADMIN.value - ) - password = ( - self.state.unit_server.valkey_admin_password - if connect_to == "valkey" - else self.state.cluster.internal_users_credentials.get( - CharmUsers.SENTINEL_CHARM_ADMIN.value, "" - ) - ) - cli_command = [ - self.workload.cli, - "-h", - hostname, - "-p", - str(port), - "--user", - user, - "--pass", - password, - ] + command - output, error = self.workload.exec(cli_command) - logger.debug("Executed command: %s, got output: %s", " ".join(command[0]), output) - if error: - logger.error("Error output from command '%s': %s", " ".join(command[0]), error) - return output, error - def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the cluster manager's statuses.""" status_list: list[StatusObject] = self.state.statuses.get( @@ -213,4 +114,34 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje if not self.workload.can_connect: status_list.append(CharmStatuses.SERVICE_NOT_STARTED.value) + # Peer relation not established yet, or model not built yet for unit or app + if not self.state.cluster.model or not self.state.unit_server.model: + return status_list if status_list else [CharmStatuses.ACTIVE_IDLE.value] + + if self.state.charm.unit.is_leader(): + return status_list if status_list else [CharmStatuses.ACTIVE_IDLE.value] + + # non leader statuses + if ( + not self.state.cluster.internal_users_credentials + or not self.state.number_units_started + ): + status_list.append( + ClusterStatuses.WAITING_FOR_PRIMARY_START.value, + ) + + match self.state.unit_server.model.start_state: + case StartState.NOT_STARTED.value: + status_list.append( + CharmStatuses.WAITING_TO_START.value, + ) + case StartState.STARTING_WAITING_SENTINEL.value: + status_list.append( + ClusterStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value, + ) + case StartState.STARTING_WAITING_REPLICA_SYNC.value: + status_list.append( + ClusterStatuses.WAITING_FOR_REPLICA_SYNC.value, + ) + return status_list if status_list else [CharmStatuses.ACTIVE_IDLE.value] diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py new file mode 100644 index 0000000..60ae6d9 --- /dev/null +++ b/src/managers/sentinel.py @@ -0,0 +1,116 @@ +#!/usr/bin/env python3 +# Copyright 2025 Canonical Ltd. +# See LICENSE file for licensing details. + +"""Manager for all sentinel related tasks.""" + +import logging + +import tenacity +from data_platform_helpers.advanced_statuses.models import StatusObject +from data_platform_helpers.advanced_statuses.protocol import ManagerStatusProtocol +from data_platform_helpers.advanced_statuses.types import Scope + +from common.client import ValkeyClient +from common.exceptions import ( + ValkeyWorkloadCommandError, +) +from core.base_workload import WorkloadBase +from core.cluster_state import ClusterState +from literals import PRIMARY_NAME, CharmUsers +from statuses import CharmStatuses + +logger = logging.getLogger(__name__) + + +class SentinelManager(ManagerStatusProtocol): + """Manage sentinel members.""" + + name: str = "sentinel" + state: ClusterState + + def __init__(self, state: ClusterState, workload: WorkloadBase): + self.state = state + self.workload = workload + self.admin_user = CharmUsers.SENTINEL_CHARM_ADMIN.value + + @property + def admin_password(self) -> str: + """Get the password of the admin user for the sentinel service.""" + return self.state.cluster.internal_users_credentials.get( + CharmUsers.SENTINEL_CHARM_ADMIN.value, "" + ) + + @tenacity.retry( + wait=tenacity.wait_fixed(5), + stop=tenacity.stop_after_attempt(5), + retry=tenacity.retry_if_result(lambda result: result is False), + reraise=True, + ) + def is_sentinel_discovered(self) -> bool: + """Check if the sentinel of the local unit was discovered by the other sentinels in the cluster.""" + # list of active sentinels: units with started flag true + active_sentinels = [ + unit.model.private_ip + for unit in self.state.servers + if unit.model + and unit.is_started + and unit.model.private_ip != self.state.unit_server.model.private_ip + ] + + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + workload=self.workload, + connect_to="sentinel", + ) + + for sentinel_ip in active_sentinels: + try: + output, _ = client.exec_cli_command( + command=["sentinel", "sentinels", PRIMARY_NAME], + hostname=sentinel_ip, + ) + if self.state.unit_server.model.private_ip not in output: + logger.info(f"Sentinel at {sentinel_ip} has not discovered this sentinel") + return False + except ValkeyWorkloadCommandError: + logger.warning(f"Could not query sentinel at {sentinel_ip} for primary discovery.") + continue + return True + + def get_primary_ip(self) -> str | None: + """Get the IP address of the primary node in the cluster.""" + started_servers = [unit for unit in self.state.servers if unit.model and unit.is_started] + + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + workload=self.workload, + connect_to="sentinel", + ) + + for unit in started_servers: + try: + output = client.exec_cli_command( + command=["sentinel", "get-master-addr-by-name", PRIMARY_NAME], + hostname=unit.model.private_ip, + )[0] + primary_ip = output.strip().split()[0] + logger.info(f"Primary IP address is {primary_ip}") + return primary_ip + except (IndexError, ValkeyWorkloadCommandError): + logger.error("Could not get primary IP from sentinel output.") + + logger.error( + "Could not determine primary IP from sentinels. Number of started servers: %d.", + len(started_servers), + ) + + def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: + """Compute the sentinel manager's statuses.""" + status_list: list[StatusObject] = self.state.statuses.get( + scope=scope, component=self.name, running_status_only=True, running_status_type="async" + ).root + + return status_list if status_list else [CharmStatuses.ACTIVE_IDLE.value] diff --git a/src/statuses.py b/src/statuses.py index f1dc39b..23cdd81 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -30,7 +30,6 @@ class CharmStatuses(Enum): WAITING_TO_START = StatusObject( status="maintenance", message="Waiting for leader to authorize service start", - running="async", ) CONFIGURATION_ERROR = StatusObject( status="blocked", @@ -51,19 +50,16 @@ class ClusterStatuses(Enum): WAITING_FOR_SENTINEL_DISCOVERY = StatusObject( status="maintenance", message="Waiting for sentinel to be discovered by other units...", - running="async", ) WAITING_FOR_REPLICA_SYNC = StatusObject( status="maintenance", message="Waiting for replica to sync with primary...", - running="async", ) WAITING_FOR_PRIMARY_START = StatusObject( status="maintenance", message="Waiting for primary to start and become active...", - running="async", ) diff --git a/src/workload_vm.py b/src/workload_vm.py index fdfd8ed..949383f 100644 --- a/src/workload_vm.py +++ b/src/workload_vm.py @@ -104,7 +104,6 @@ def exec(self, command: List[str]) -> tuple[str, str | None]: capture_output=True, timeout=10, ) - logger.debug("Executed command: %s, got output: %s", " ".join(command), output.stdout) return output.stdout, output.stderr except subprocess.CalledProcessError as e: logger.error("Command failed with %s, %s", e.returncode, e.stderr) From ab3e4c59ed4b33277e058d30a959d9fde770d8b6 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 13 Feb 2026 07:46:57 +0000 Subject: [PATCH 075/282] fix unit tests and fine tune statuses --- src/events/base_events.py | 8 ++------ src/managers/cluster.py | 22 +++++++++++----------- tests/unit/test_charm.py | 36 ++++++++++++++++++------------------ 3 files changed, 31 insertions(+), 35 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index a74d12b..d9e5d64 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -74,6 +74,7 @@ def _on_start(self, event: ops.StartEvent) -> None: logger.warning("Workload not ready yet") event.defer() return + self.charm.state.unit_server.update({"start_state": StartState.NOT_STARTED.value}) if self.charm.unit.is_leader(): self._start_services(event, primary_ip=self.charm.workload.get_private_ip()) @@ -203,12 +204,7 @@ def _on_peer_relation_changed(self, event: ops.RelationChangedEvent) -> None: ), None, ) - logger.debug( - "Starting unit %s has started: %s", - self.charm.state.cluster.model.starting_member, - starting_unit.is_started if starting_unit else "No starting unit", - ) - if not units_requesting_start or ( + if ( # if the starting member has not started yet, we want to wait for it to start instead of choosing another unit that requested start self.charm.state.cluster.model.starting_member and starting_unit diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 0c81cd8..b0b6ce0 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -122,19 +122,19 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje return status_list if status_list else [CharmStatuses.ACTIVE_IDLE.value] # non leader statuses - if ( - not self.state.cluster.internal_users_credentials - or not self.state.number_units_started - ): - status_list.append( - ClusterStatuses.WAITING_FOR_PRIMARY_START.value, - ) - match self.state.unit_server.model.start_state: case StartState.NOT_STARTED.value: - status_list.append( - CharmStatuses.WAITING_TO_START.value, - ) + if ( + not self.state.cluster.internal_users_credentials + or not self.state.number_units_started + ): + status_list.append( + ClusterStatuses.WAITING_FOR_PRIMARY_START.value, + ) + else: + status_list.append( + CharmStatuses.WAITING_TO_START.value, + ) case StartState.STARTING_WAITING_SENTINEL.value: status_list.append( ClusterStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value, diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 5605cd1..6dd02a1 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -130,7 +130,7 @@ def test_start_non_leader_unit(cloud_spec): with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), - patch("managers.cluster.ClusterManager.get_primary_ip", return_value="127.1.0.1"), + patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="127.1.0.1"), ): state_out = ctx.run(ctx.on.start(), state_in) assert not state_out.get_container(container.name).service_statuses.get(SERVICE_VALKEY) @@ -155,7 +155,7 @@ def test_start_non_leader_unit(cloud_spec): id=1, endpoint=PEER_RELATION, local_app_data={"primary-ip": "127.1.0.1"}, - peers_data={1: {"started": "true"}}, + peers_data={1: {"start-state": "started"}}, ) state_in = testing.State( model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), @@ -174,7 +174,7 @@ def test_start_non_leader_unit(cloud_spec): id=1, endpoint=PEER_RELATION, local_app_data={"starting-member": "valkey/0"}, - peers_data={1: {"started": "true"}}, + peers_data={1: {"start-state": "started"}}, ) state_in = testing.State( model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), @@ -187,12 +187,12 @@ def test_start_non_leader_unit(cloud_spec): assert status_is(state_out, ClusterStatuses.WAITING_FOR_REPLICA_SYNC.value) # sentinel not yet discovered - with patch("managers.cluster.ClusterManager.is_sentinel_discovered", return_value=False): + with patch("managers.sentinel.SentinelManager.is_sentinel_discovered", return_value=False): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, local_app_data={"starting-member": "valkey/0"}, - peers_data={1: {"started": "true"}}, + peers_data={1: {"start-state": "started"}}, ) state_in = testing.State( model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), @@ -206,14 +206,14 @@ def test_start_non_leader_unit(cloud_spec): # Happy path with sentinel discovered and replica synced with ( - patch("managers.cluster.ClusterManager.is_sentinel_discovered", return_value=True), + patch("managers.sentinel.SentinelManager.is_sentinel_discovered", return_value=True), patch("managers.cluster.ClusterManager.is_replica_synced", return_value=True), ): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, local_app_data={"starting-member": "valkey/0"}, - peers_data={1: {"started": "true"}}, + peers_data={1: {"start-state": "started"}}, ) state_in = testing.State( model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), @@ -230,7 +230,7 @@ def test_start_non_leader_unit(cloud_spec): SERVICE_METRIC_EXPORTER ) assert state_out.get_container(container.name).service_statuses[SERVICE_SENTINEL] - assert state_out.get_relation(1).local_unit_data["started"] == "true" + assert state_out.get_relation(1).local_unit_data["start-state"] == "started" def test_update_status_leader_unit(cloud_spec): @@ -238,7 +238,7 @@ def test_update_status_leader_unit(cloud_spec): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, - local_unit_data={"started": "True"}, + local_unit_data={"start-state": "started"}, ) status_peer_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) @@ -258,7 +258,7 @@ def test_update_status_leader_unit(cloud_spec): def test_update_status_non_leader_unit(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = testing.PeerRelation( - id=1, endpoint=PEER_RELATION, local_unit_data={"started": "true"} + id=1, endpoint=PEER_RELATION, local_unit_data={"start-state": "started"} ) status_peer_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) @@ -428,7 +428,7 @@ def test_config_changed_leader_unit(cloud_spec): with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("managers.cluster.ClusterManager._exec_cli_command") as mock_exec_command, + patch("common.client.ValkeyClient.exec_cli_command") as mock_exec_command, ): state_out = ctx.run(ctx.on.config_changed(), state_in) mock_set_acl_file.assert_called_once() @@ -462,13 +462,13 @@ def test_config_changed_leader_unit_primary(cloud_spec): with ( patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("managers.cluster.ClusterManager._exec_cli_command") as mock_exec_command, + patch("common.client.ValkeyClient.exec_cli_command") as mock_exec_command, patch("core.base_workload.WorkloadBase.get_private_ip", return_value="127.0.1.1"), - patch("managers.cluster.ClusterManager.get_primary_ip", return_value="127.0.1.1"), + patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="127.0.1.1"), ): state_out = ctx.run(ctx.on.config_changed(), state_in) mock_set_acl_file.assert_called_once() - mock_exec_command.assert_called_once_with(["acl", "load"]) + assert mock_exec_command.call_count == 2 # one for acl load, one for primaryauth set secret_out = state_out.get_secret( label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" ) @@ -515,7 +515,7 @@ def test_change_password_secret_changed_non_leader_unit(cloud_spec): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, - local_unit_data={"started": "true", "private-ip": "127.0.1.0"}, + local_unit_data={"start-state": "started", "private-ip": "127.0.1.0"}, ) container = testing.Container(name=CONTAINER, can_connect=True) @@ -538,8 +538,8 @@ def test_change_password_secret_changed_non_leader_unit(cloud_spec): "events.base_events.BaseEvents._update_internal_users_password" ) as mock_update_password, patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("managers.cluster.ClusterManager._exec_cli_command") as mock_exec_command, - patch("managers.cluster.ClusterManager.get_primary_ip", return_value="127.0.1.1"), + patch("common.client.ValkeyClient.exec_cli_command") as mock_exec_command, + patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="127.0.1.1"), ): ctx.run(ctx.on.secret_changed(password_secret), state_in) mock_update_password.assert_not_called() @@ -573,7 +573,7 @@ def test_change_password_secret_changed_non_leader_unit_not_successful(cloud_spe ) as mock_update_password, patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, patch( - "managers.cluster.ClusterManager._exec_cli_command", + "common.client.ValkeyClient.exec_cli_command", side_effect=ValkeyWorkloadCommandError("Failed to execute command"), ) as mock_exec_command, ctx(ctx.on.secret_changed(password_secret), state_in) as manager, From 99562f00ac4343baca22a9a1c387924832fb8043 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 13 Feb 2026 08:06:25 +0000 Subject: [PATCH 076/282] fixes for rene feedback --- src/managers/config.py | 29 ++++---- tests/integration/k8s/ha/test_scaling.py | 12 ++-- tests/unit/conftest.py | 5 ++ tests/unit/test_charm.py | 92 ++++++++++-------------- 4 files changed, 63 insertions(+), 75 deletions(-) diff --git a/src/managers/config.py b/src/managers/config.py index d72d83f..9f8a722 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -80,22 +80,25 @@ def get_config_properties(self, primary_ip: str) -> dict[str, str]: else: config_properties["bind"] = "0.0.0.0 -::1" - logger.debug( - "primary: %s, hostname: %s", - primary_ip, - self.state.unit_server.model.hostname, - ) - # replicaof + # replica related config + replica_config = self.generate_replica_config(primary_ip=primary_ip) + config_properties.update(replica_config) + + return config_properties + + def generate_replica_config(self, primary_ip): + """Generate the config properties related to replica configuration based on the current cluster state.""" + replica_config = { + "primaryuser": CharmUsers.VALKEY_REPLICA.value, + "primaryauth": self.state.cluster.internal_users_credentials.get( + CharmUsers.VALKEY_REPLICA.value, "" + ), + } if primary_ip != self.state.unit_server.model.private_ip: # set replicaof logger.debug("Setting replicaof to primary %s", primary_ip) - config_properties["replicaof"] = f"{primary_ip} {CLIENT_PORT}" - config_properties["primaryuser"] = CharmUsers.VALKEY_REPLICA.value - config_properties["primaryauth"] = self.state.cluster.internal_users_credentials.get( - CharmUsers.VALKEY_REPLICA.value, "" - ) - - return config_properties + replica_config["replicaof"] = f"{primary_ip} {CLIENT_PORT}" + return replica_config def set_config_properties(self, primary_ip: str) -> None: """Write the config properties to the config file.""" diff --git a/tests/integration/k8s/ha/test_scaling.py b/tests/integration/k8s/ha/test_scaling.py index 9585c40..e55530f 100644 --- a/tests/integration/k8s/ha/test_scaling.py +++ b/tests/integration/k8s/ha/test_scaling.py @@ -50,17 +50,15 @@ def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: init_units_count = len(juju.status().apps[APP_NAME].units) # scale up - juju.add_unit(APP_NAME, num_units=2) + juju.add_unit(APP_NAME, num_units=NUM_UNITS - init_units_count) juju.wait( lambda status: are_apps_active_and_agents_idle( - status, APP_NAME, idle_period=10, unit_count=init_units_count + 2 + status, APP_NAME, idle_period=10, unit_count=NUM_UNITS ), timeout=1200, ) num_units = len(juju.status().apps[APP_NAME].units) - assert num_units == init_units_count + 2, ( - f"Expected {init_units_count + 2} units, got {num_units}." - ) + assert num_units == NUM_UNITS, f"Expected {NUM_UNITS} units, got {num_units}." # check if all units have been added to the cluster endpoints = ",".join(get_cluster_hostnames(juju, APP_NAME)) @@ -77,8 +75,8 @@ def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: master = sentinel_client.master_for("primary") info = master.info("replication") connected_slaves = info.get("connected_slaves", 0) - assert connected_slaves == num_units - 1, ( - f"Expected {num_units - 1} connected slaves, got {connected_slaves}." + assert connected_slaves == NUM_UNITS - 1, ( + f"Expected {NUM_UNITS - 1} connected slaves, got {connected_slaves}." ) assert_continuous_writes_increasing( diff --git a/tests/unit/conftest.py b/tests/unit/conftest.py index 92b049c..cedaf24 100644 --- a/tests/unit/conftest.py +++ b/tests/unit/conftest.py @@ -11,6 +11,11 @@ def mock_write_config_file(mocker): mocker.patch("workload_k8s.ValkeyK8sWorkload.write_config_file") +@pytest.fixture(autouse=True) +def mock_write_file(mocker): + mocker.patch("workload_k8s.ValkeyK8sWorkload.write_file") + + @pytest.fixture(autouse=True) def cloud_spec(): return testing.CloudSpec( diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 6dd02a1..8ffc350 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -81,38 +81,35 @@ def test_start_leader_unit(cloud_spec): } } - with ( - patch("workload_k8s.ValkeyK8sWorkload.write_file"), - ): - # generate passwords - state_out = ctx.run(ctx.on.leader_elected(), state_in) - - # start event - state_out = ctx.run(ctx.on.start(), state_out) - assert state_out.get_container(container.name).plan == expected_plan - assert ( - state_out.get_container(container.name).service_statuses[SERVICE_VALKEY] - == pebble.ServiceStatus.ACTIVE - ) - assert ( - state_out.get_container(container.name).service_statuses[SERVICE_METRIC_EXPORTER] - == pebble.ServiceStatus.ACTIVE - ) - assert state_out.unit_status == ActiveStatus() - assert state_out.app_status == ActiveStatus() + # generate passwords + state_out = ctx.run(ctx.on.leader_elected(), state_in) + + # start event + state_out = ctx.run(ctx.on.start(), state_out) + assert state_out.get_container(container.name).plan == expected_plan + assert ( + state_out.get_container(container.name).service_statuses[SERVICE_VALKEY] + == pebble.ServiceStatus.ACTIVE + ) + assert ( + state_out.get_container(container.name).service_statuses[SERVICE_METRIC_EXPORTER] + == pebble.ServiceStatus.ACTIVE + ) + assert state_out.unit_status == ActiveStatus() + assert state_out.app_status == ActiveStatus() - # container not ready - container = testing.Container(name=CONTAINER, can_connect=False) - state_in = testing.State( - model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), - leader=True, - relations={relation, status_peer_relation}, - containers={container}, - ) + # container not ready + container = testing.Container(name=CONTAINER, can_connect=False) + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + leader=True, + relations={relation, status_peer_relation}, + containers={container}, + ) - state_out = ctx.run(ctx.on.start(), state_in) - assert status_is(state_out, CharmStatuses.SERVICE_NOT_STARTED.value) - assert status_is(state_out, CharmStatuses.SERVICE_NOT_STARTED.value, is_app=True) + state_out = ctx.run(ctx.on.start(), state_in) + assert status_is(state_out, CharmStatuses.SERVICE_NOT_STARTED.value) + assert status_is(state_out, CharmStatuses.SERVICE_NOT_STARTED.value, is_app=True) def test_start_non_leader_unit(cloud_spec): @@ -128,10 +125,7 @@ def test_start_non_leader_unit(cloud_spec): containers={container}, ) - with ( - patch("workload_k8s.ValkeyK8sWorkload.write_file"), - patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="127.1.0.1"), - ): + with patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="127.1.0.1"): state_out = ctx.run(ctx.on.start(), state_in) assert not state_out.get_container(container.name).service_statuses.get(SERVICE_VALKEY) assert not state_out.get_container(container.name).service_statuses.get( @@ -284,12 +278,11 @@ def test_internal_user_creation(cloud_spec): leader=True, containers={container}, ) - with patch("workload_k8s.ValkeyK8sWorkload.write_file"): - state_out = ctx.run(ctx.on.leader_elected(), state_in) - secret_out = state_out.get_secret( - label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" - ) - assert secret_out.latest_content.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") + state_out = ctx.run(ctx.on.leader_elected(), state_in) + secret_out = state_out.get_secret( + label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" + ) + assert secret_out.latest_content.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") def test_leader_elected_no_peer_relation(cloud_spec): @@ -301,9 +294,8 @@ def test_leader_elected_no_peer_relation(cloud_spec): containers={container}, model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) - with patch("workload_k8s.ValkeyK8sWorkload.write_file"): - state_out = ctx.run(ctx.on.leader_elected(), state_in) - assert "leader_elected" in [e.name for e in state_out.deferred] + state_out = ctx.run(ctx.on.leader_elected(), state_in) + assert "leader_elected" in [e.name for e in state_out.deferred] def test_leader_elected_leader_password_specified(cloud_spec): @@ -323,7 +315,6 @@ def test_leader_elected_leader_password_specified(cloud_spec): model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) with ( - patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch( "managers.config.ConfigManager.generate_password", return_value="generated-password" ), @@ -352,10 +343,7 @@ def test_leader_elected_leader_password_specified_wrong_secret(cloud_spec): config={INTERNAL_USERS_PASSWORD_CONFIG: "secret:1tf1wk0tmfrodp8ofwxn"}, model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) - with ( - patch("workload_k8s.ValkeyK8sWorkload.write_file"), - pytest.raises(testing.errors.UncaughtCharmError) as exc_info, - ): + with pytest.raises(testing.errors.UncaughtCharmError) as exc_info: ctx.run(ctx.on.leader_elected(), state_in) assert "SecretNotFoundError" in str(exc_info.value) @@ -400,10 +388,7 @@ def test_config_changed_leader_unit_valkey_update_fails(cloud_spec): config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) - with ( - patch("workload_k8s.ValkeyK8sWorkload.write_file"), - patch("core.models.RelationState.update") as mock_update, - ): + with patch("core.models.RelationState.update") as mock_update: ctx.run(ctx.on.config_changed(), state_in) mock_update.assert_called_once() @@ -426,7 +411,6 @@ def test_config_changed_leader_unit(cloud_spec): model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) with ( - patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, patch("common.client.ValkeyClient.exec_cli_command") as mock_exec_command, ): @@ -460,7 +444,6 @@ def test_config_changed_leader_unit_primary(cloud_spec): model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) with ( - patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, patch("common.client.ValkeyClient.exec_cli_command") as mock_exec_command, patch("core.base_workload.WorkloadBase.get_private_ip", return_value="127.0.1.1"), @@ -496,7 +479,6 @@ def test_config_changed_leader_unit_wrong_username(cloud_spec): model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) with ( - patch("workload_k8s.ValkeyK8sWorkload.write_file"), patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, ctx(ctx.on.config_changed(), state_in) as manager, ): From 4258bd5e4a8ceb27ae403c3bd4d8f31419c1dc39 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 13 Feb 2026 10:20:04 +0000 Subject: [PATCH 077/282] remove get_private_ip and replace it with bind_address --- src/common/client.py | 6 ++---- src/core/base_workload.py | 21 --------------------- src/core/cluster_state.py | 1 - src/events/base_events.py | 6 +++--- src/managers/cluster.py | 4 +++- tests/unit/conftest.py | 11 +++++++++++ tests/unit/test_charm.py | 3 +-- 7 files changed, 20 insertions(+), 32 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index 78e57f5..17f563e 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -30,13 +30,13 @@ def __init__( def exec_cli_command( self, command: list[str], - hostname: str | None = None, + hostname: str, ) -> tuple[str, str | None]: """Execute a Valkey CLI command on the server. Args: command (list[str]): The CLI command to execute, as a list of arguments. - hostname (str | None): The hostname to connect to. If None, defaults to the private IP of the unit. + hostname (str): The hostname to connect to. Returns: tuple[str, str | None]: The standard output and standard error from the command execution. @@ -44,8 +44,6 @@ def exec_cli_command( Raises: ValkeyWorkloadCommandError: If the CLI command fails to execute. """ - if not hostname: - hostname = self.workload.get_private_ip() port = CLIENT_PORT if self.connect_to == "valkey" else SENTINEL_PORT user = self.username password = self.password diff --git a/src/core/base_workload.py b/src/core/base_workload.py index 9649bfc..8ded732 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -5,8 +5,6 @@ """Base objects for workload operations across different substrates.""" import logging -import socket -import subprocess from abc import ABC, abstractmethod from charmlibs import pathops @@ -51,25 +49,6 @@ def alive(self) -> bool: """Check if the Valkey service is running.""" pass - def get_private_ip(self) -> str: - """Get the Private IP address of the current unit.""" - cmd = "unit-get private-address" - try: - output = subprocess.run( - cmd, - check=True, - text=True, - shell=True, - capture_output=True, - timeout=10, - ) - if output.returncode == 0: - return output.stdout.strip() - except (subprocess.CalledProcessError, subprocess.TimeoutExpired) as e: - logger.error(f"Error executing command '{cmd}': {e}") - - return socket.gethostbyname(socket.gethostname()) - def write_file( self, content: str, diff --git a/src/core/cluster_state.py b/src/core/cluster_state.py index b11b635..9739f85 100644 --- a/src/core/cluster_state.py +++ b/src/core/cluster_state.py @@ -116,7 +116,6 @@ def get_secret_from_id(self, secret_id: str, refresh: bool = False) -> dict[str, """Resolve the given id of a Juju secret and return the content as a dict. Args: - model (Model): Model object. secret_id (str): The id of the secret. refresh (bool): Whether to refresh the secret content from the controller. Defaults to False. diff --git a/src/events/base_events.py b/src/events/base_events.py index d9e5d64..1f0258f 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -77,7 +77,7 @@ def _on_start(self, event: ops.StartEvent) -> None: self.charm.state.unit_server.update({"start_state": StartState.NOT_STARTED.value}) if self.charm.unit.is_leader(): - self._start_services(event, primary_ip=self.charm.workload.get_private_ip()) + self._start_services(event, primary_ip=self.charm.state.bind_address) logger.info("Services started") self.charm.state.unit_server.update({"start_state": StartState.STARTED.value}) return @@ -234,7 +234,7 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: self.charm.state.unit_server.update( { "hostname": socket.gethostname(), - "private_ip": self.charm.workload.get_private_ip(), + "private_ip": self.charm.state.bind_address, } ) @@ -281,7 +281,7 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: self.charm.state.unit_server.update( { "hostname": socket.gethostname(), - "private_ip": self.charm.workload.get_private_ip(), + "private_ip": self.charm.state.bind_address, } ) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index b0b6ce0..f663452 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -49,7 +49,7 @@ def reload_acl_file(self) -> None: password=self.admin_password, workload=self.workload, ) - client.exec_cli_command(["acl", "load"]) + client.exec_cli_command(["acl", "load"], hostname=self.state.bind_address) except ValkeyWorkloadCommandError: raise ValkeyACLLoadError("Could not load ACL file into Valkey cluster.") @@ -70,6 +70,7 @@ def update_primary_auth(self) -> None: CharmUsers.VALKEY_REPLICA.value, "" ), ], + hostname=self.state.bind_address, ) logger.info("Updated primaryauth runtime configuration on Valkey server") except ValkeyWorkloadCommandError: @@ -92,6 +93,7 @@ def is_replica_synced(self) -> bool: output = ( client.exec_cli_command( command=["role"], + hostname=self.state.bind_address, )[0] .strip() .split() diff --git a/tests/unit/conftest.py b/tests/unit/conftest.py index cedaf24..ea04b33 100644 --- a/tests/unit/conftest.py +++ b/tests/unit/conftest.py @@ -2,6 +2,8 @@ # Copyright 2026 Canonical Ltd. # See LICENSE file for licensing details. +from unittest.mock import PropertyMock + import pytest from ops import testing @@ -16,6 +18,15 @@ def mock_write_file(mocker): mocker.patch("workload_k8s.ValkeyK8sWorkload.write_file") +@pytest.fixture(autouse=True) +def mock_bind_address(mocker): + mocker.patch( + "core.cluster_state.ClusterState.bind_address", + new_callable=PropertyMock, + return_value="127.1.1.1", + ) + + @pytest.fixture(autouse=True) def cloud_spec(): return testing.CloudSpec( diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 8ffc350..dbf77c2 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -446,7 +446,6 @@ def test_config_changed_leader_unit_primary(cloud_spec): with ( patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, patch("common.client.ValkeyClient.exec_cli_command") as mock_exec_command, - patch("core.base_workload.WorkloadBase.get_private_ip", return_value="127.0.1.1"), patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="127.0.1.1"), ): state_out = ctx.run(ctx.on.config_changed(), state_in) @@ -564,7 +563,7 @@ def test_change_password_secret_changed_non_leader_unit_not_successful(cloud_spe state_out = manager.run() mock_update_password.assert_not_called() mock_set_acl_file.assert_called_once() - mock_exec_command.assert_called_once_with(["acl", "load"]) + mock_exec_command.assert_called_once_with(["acl", "load"], hostname="127.1.1.1") cluster_statuses = charm.state.statuses.get( scope="unit", component=charm.cluster_manager.name, From d00c206cef4be5ed904f8a07f68d1df0e15de321 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 13 Feb 2026 10:27:24 +0000 Subject: [PATCH 078/282] add unit tests for peer relation changed --- tests/unit/test_charm.py | 68 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index dbf77c2..d8eed58 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -17,6 +17,7 @@ PEER_RELATION, STATUS_PEERS_RELATION, CharmUsers, + StartState, ) from src.statuses import CharmStatuses, ClusterStatuses @@ -596,3 +597,70 @@ def test_change_password_secret_changed_leader_unit(cloud_spec): ): ctx.run(ctx.on.secret_changed(password_secret), state_in) mock_update_password.assert_called_once_with(password_secret.id) + + +def test_relation_changed_event_leader_setting_starting_member(cloud_spec): + ctx = testing.Context(ValkeyCharm, app_trusted=True) + relation = testing.PeerRelation( + id=1, + endpoint=PEER_RELATION, + local_unit_data={"start-state": "started"}, + peers_data={1: {"request-start-lock": "true"}}, + ) + container = testing.Container(name=CONTAINER, can_connect=True) + + state_in = testing.State( + leader=True, + relations={relation}, + containers={container}, + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + ) + state_out = ctx.run(ctx.on.relation_changed(relation), state_in) + assert state_out.get_relation(1).local_app_data.get("starting-member") == "valkey/1" + + +def test_relation_changed_event_leader_clears_starting_member(cloud_spec): + ctx = testing.Context(ValkeyCharm, app_trusted=True) + relation = testing.PeerRelation( + id=1, + endpoint=PEER_RELATION, + local_app_data={"starting-member": "valkey/1"}, + local_unit_data={"start-state": "started"}, + peers_data={1: {"start-state": "started"}}, + ) + container = testing.Container(name=CONTAINER, can_connect=True) + + state_in = testing.State( + leader=True, + relations={relation}, + containers={container}, + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + ) + state_out = ctx.run(ctx.on.relation_changed(relation), state_in) + assert state_out.get_relation(1).local_app_data.get("starting-member") is None + + +def test_relation_changed_event_leader_leaves_starting_member_as_is(cloud_spec): + ctx = testing.Context(ValkeyCharm, app_trusted=True) + relation = testing.PeerRelation( + id=1, + endpoint=PEER_RELATION, + local_app_data={"starting-member": "valkey/1"}, + local_unit_data={"start-state": StartState.STARTED.value}, + peers_data={ + 1: { + "start-state": StartState.STARTING_WAITING_REPLICA_SYNC.value, + "request-start-lock": "true", + } + }, + ) + container = testing.Container(name=CONTAINER, can_connect=True) + + state_in = testing.State( + leader=True, + relations={relation}, + containers={container}, + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + ) + state_out = ctx.run(ctx.on.relation_changed(relation), state_in) + assert state_out.get_relation(1).local_app_data.get("starting-member") == "valkey/1" From ee7f33105115f7cf70014573bc1fc8437a604aef Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 16 Feb 2026 07:24:45 +0000 Subject: [PATCH 079/282] fix some feedback from mehdi --- src/charm.py | 1 + src/core/base_workload.py | 4 +- src/events/base_events.py | 51 ++++++++++------------ src/managers/cluster.py | 16 +++---- src/managers/config-template/sentinel.conf | 2 +- src/managers/config.py | 10 ++--- src/managers/sentinel.py | 19 ++++---- src/statuses.py | 8 ++-- src/workload_k8s.py | 14 +++--- src/workload_vm.py | 12 ++--- 10 files changed, 68 insertions(+), 69 deletions(-) diff --git a/src/charm.py b/src/charm.py index c920986..6915819 100755 --- a/src/charm.py +++ b/src/charm.py @@ -50,6 +50,7 @@ def __init__(self, *args) -> None: self, self.cluster_manager, self.config_manager, + self.sentinel_manager, ) # --- EVENT HANDLERS --- diff --git a/src/core/base_workload.py b/src/core/base_workload.py index 8ded732..c6ce4d8 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -19,9 +19,9 @@ class WorkloadBase(ABC): def __init__(self) -> None: """Initialize the WorkloadBase.""" - self.root: pathops.PathProtocol + self.root_dir: pathops.PathProtocol self.config_file: pathops.PathProtocol - self.sentinel_config: pathops.PathProtocol + self.sentinel_config_file: pathops.PathProtocol self.acl_file: pathops.PathProtocol self.sentinel_acl_file: pathops.PathProtocol self.working_dir: pathops.PathProtocol diff --git a/src/events/base_events.py b/src/events/base_events.py index 1f0258f..3c98c03 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -33,7 +33,7 @@ class UnitFullyStarted(ops.EventBase): This event will be deferred until: The Sentinel service is running and was discovered by other units. - The Valkey service is running and the replica has finished syncing data. + The Valkey service is running and the current node is in sync with the primary (if a replica). """ @@ -69,23 +69,21 @@ def _on_install(self, event: ops.InstallEvent) -> None: raise RuntimeError("Failed to install the Valkey snap") def _on_start(self, event: ops.StartEvent) -> None: - """Handle the `pebble-ready` event.""" + """Handle the on start event.""" if not self.charm.workload.can_connect: logger.warning("Workload not ready yet") event.defer() return self.charm.state.unit_server.update({"start_state": StartState.NOT_STARTED.value}) - if self.charm.unit.is_leader(): + primary_ip = self.charm.sentinel_manager.get_primary_ip() + if self.charm.unit.is_leader() and not primary_ip: self._start_services(event, primary_ip=self.charm.state.bind_address) logger.info("Services started") self.charm.state.unit_server.update({"start_state": StartState.STARTED.value}) return - if ( - not self.charm.state.cluster.internal_users_credentials - or not self.charm.state.number_units_started - ): + if not self.charm.state.cluster.internal_users_credentials or not primary_ip: logger.info( "Non-leader unit waiting for leader to set primary and internal user credentials" ) @@ -94,23 +92,20 @@ def _on_start(self, event: ops.StartEvent) -> None: self.charm.state.unit_server.update({"request_start_lock": True}) + # TODO unit.name would not work across models we need to switch to using `model.unit.name + model_uuid` if self.charm.state.cluster.model.starting_member != self.charm.unit.name: logger.info("Non-leader unit waiting for leader to choose it as starting member") event.defer() return - if not (primary_ip := (self.charm.sentinel_manager.get_primary_ip())): - logger.error("Primary IP not found. Deferring start event.") - event.defer() + if not self._start_services(event, primary_ip=primary_ip): return - - self._start_services(event, primary_ip=primary_ip) self.unit_fully_started.emit() - def _start_services(self, event: ops.StartEvent, primary_ip: str) -> None: + def _start_services(self, event: ops.StartEvent, primary_ip: str) -> bool: """Start Valkey and Sentinel services.""" try: - self.charm.config_manager.update_local_valkey_admin() + self.charm.config_manager.update_local_valkey_admin_password() self.charm.config_manager.set_config_properties(primary_ip=primary_ip) self.charm.config_manager.set_acl_file() self.charm.config_manager.set_sentinel_config_properties(primary_ip=primary_ip) @@ -124,7 +119,7 @@ def _start_services(self, event: ops.StartEvent, primary_ip: str) -> None: statuses_state=self.charm.state.statuses, ) event.defer() - return + return False self.charm.state.statuses.delete( CharmStatuses.CONFIGURATION_ERROR.value, scope="unit", @@ -138,15 +133,7 @@ def _start_services(self, event: ops.StartEvent, primary_ip: str) -> None: ) self.charm.workload.start() - if self.charm.workload.alive(): - logger.info("Workload started successfully. Opening client port") - self.charm.unit.open_port("tcp", CLIENT_PORT) - self.charm.state.statuses.delete( - ValkeyServiceStatuses.SERVICE_STARTING.value, - scope="unit", - component=self.charm.cluster_manager.name, - ) - else: + if not self.charm.workload.alive(): logger.error("Workload failed to start.") self.charm.status.set_running_status( ValkeyServiceStatuses.SERVICE_NOT_RUNNING.value, @@ -154,12 +141,22 @@ def _start_services(self, event: ops.StartEvent, primary_ip: str) -> None: component_name=self.charm.cluster_manager.name, statuses_state=self.charm.state.statuses, ) + return False + + logger.info("Workload started successfully. Opening client port") + self.charm.unit.open_port("tcp", CLIENT_PORT) + self.charm.state.statuses.delete( + ValkeyServiceStatuses.SERVICE_STARTING.value, + scope="unit", + component=self.charm.cluster_manager.name, + ) self.charm.state.statuses.delete( ValkeyServiceStatuses.SERVICE_NOT_RUNNING.value, scope="unit", component=self.charm.cluster_manager.name, ) + return True # TODO check how to trigger if deferred without update status event def _on_unit_fully_started(self, event: UnitFullyStarted) -> None: @@ -269,7 +266,7 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: } ) # update local unit admin password - self.charm.config_manager.update_local_valkey_admin() + self.charm.config_manager.update_local_valkey_admin_password() try: self.charm.config_manager.set_acl_file() except ValkeyWorkloadCommandError: @@ -327,7 +324,7 @@ def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: self.charm.cluster_manager.reload_acl_file() self.charm.cluster_manager.update_primary_auth() # update the local unit admin password to match the leader - self.charm.config_manager.update_local_valkey_admin() + self.charm.config_manager.update_local_valkey_admin_password() except (ValkeyACLLoadError, ValkeyConfigSetError, ValkeyWorkloadCommandError) as e: logger.error(e) self.charm.status.set_running_status( @@ -394,7 +391,7 @@ def _update_internal_users_password(self, secret_id: str) -> None: } ) # update the local unit admin password - self.charm.config_manager.update_local_valkey_admin() + self.charm.config_manager.update_local_valkey_admin_password() except ( ValkeyACLLoadError, ValueError, diff --git a/src/managers/cluster.py b/src/managers/cluster.py index f663452..ed5277f 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -6,10 +6,10 @@ import logging -import tenacity from data_platform_helpers.advanced_statuses.models import StatusObject from data_platform_helpers.advanced_statuses.protocol import ManagerStatusProtocol from data_platform_helpers.advanced_statuses.types import Scope +from tenacity import retry, retry_if_result, stop_after_attempt, wait_fixed from common.client import ValkeyClient from common.exceptions import ( @@ -76,10 +76,10 @@ def update_primary_auth(self) -> None: except ValkeyWorkloadCommandError: raise ValkeyConfigSetError("Could not set primaryauth on Valkey server.") - @tenacity.retry( - wait=tenacity.wait_fixed(5), - stop=tenacity.stop_after_attempt(5), - retry=tenacity.retry_if_result(lambda result: result is False), + @retry( + wait=wait_fixed(5), + stop=stop_after_attempt(5), + retry=retry_if_result(lambda result: result is False), reraise=True, ) def is_replica_synced(self) -> bool: @@ -118,10 +118,10 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje # Peer relation not established yet, or model not built yet for unit or app if not self.state.cluster.model or not self.state.unit_server.model: - return status_list if status_list else [CharmStatuses.ACTIVE_IDLE.value] + return status_list or [CharmStatuses.ACTIVE_IDLE.value] if self.state.charm.unit.is_leader(): - return status_list if status_list else [CharmStatuses.ACTIVE_IDLE.value] + return status_list or [CharmStatuses.ACTIVE_IDLE.value] # non leader statuses match self.state.unit_server.model.start_state: @@ -146,4 +146,4 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje ClusterStatuses.WAITING_FOR_REPLICA_SYNC.value, ) - return status_list if status_list else [CharmStatuses.ACTIVE_IDLE.value] + return status_list or [CharmStatuses.ACTIVE_IDLE.value] diff --git a/src/managers/config-template/sentinel.conf b/src/managers/config-template/sentinel.conf index abd5c60..3db10fe 100644 --- a/src/managers/config-template/sentinel.conf +++ b/src/managers/config-template/sentinel.conf @@ -358,4 +358,4 @@ SENTINEL announce-hostnames no # accept a -LOADING response after a primary has been rebooted, before failing # over. -SENTINEL primary-reboot-down-after-period mymaster 0 \ No newline at end of file +SENTINEL primary-reboot-down-after-period mymaster 0 diff --git a/src/managers/config.py b/src/managers/config.py index 9f8a722..820f8e4 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -81,12 +81,12 @@ def get_config_properties(self, primary_ip: str) -> dict[str, str]: config_properties["bind"] = "0.0.0.0 -::1" # replica related config - replica_config = self.generate_replica_config(primary_ip=primary_ip) + replica_config = self._generate_replica_config(primary_ip=primary_ip) config_properties.update(replica_config) return config_properties - def generate_replica_config(self, primary_ip): + def _generate_replica_config(self, primary_ip: str) -> dict[str, str]: """Generate the config properties related to replica configuration based on the current cluster state.""" replica_config = { "primaryuser": CharmUsers.VALKEY_REPLICA.value, @@ -151,7 +151,7 @@ def set_sentinel_config_properties(self, primary_ip: str) -> None: sentinel_config = f"port {SENTINEL_PORT}\n" sentinel_config += f"aclfile {self.workload.sentinel_acl_file.as_posix()}\n" - # TODO consider adding quorum calculation based on number of units + # TODO consider adding quorum calculation based on number of planned_units and the parity of the number of units sentinel_config += ( f"sentinel monitor {PRIMARY_NAME} {primary_ip} {CLIENT_PORT} {QUORUM_NUMBER}\n" ) @@ -172,7 +172,7 @@ def set_sentinel_config_properties(self, primary_ip: str) -> None: # on k8s we need to set the ownership of the sentinel config file to the non-root user that the valkey process runs as in order for sentinel to be able to read/write it self.workload.write_file( sentinel_config, - self.workload.sentinel_config, + self.workload.sentinel_config_file, mode=0o600, user=self.workload.user, group=self.workload.user, @@ -208,7 +208,7 @@ def generate_password(self) -> str: """ return "".join([secrets.choice(string.ascii_letters + string.digits) for _ in range(32)]) - def update_local_valkey_admin(self) -> None: + def update_local_valkey_admin_password(self) -> None: """Update the local unit's valkey admin password in the state.""" if not ( app_password := self.state.cluster.internal_users_credentials.get( diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index 60ae6d9..9326159 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -6,10 +6,10 @@ import logging -import tenacity from data_platform_helpers.advanced_statuses.models import StatusObject from data_platform_helpers.advanced_statuses.protocol import ManagerStatusProtocol from data_platform_helpers.advanced_statuses.types import Scope +from tenacity import retry, retry_if_result, stop_after_attempt, wait_fixed from common.client import ValkeyClient from common.exceptions import ( @@ -41,10 +41,10 @@ def admin_password(self) -> str: CharmUsers.SENTINEL_CHARM_ADMIN.value, "" ) - @tenacity.retry( - wait=tenacity.wait_fixed(5), - stop=tenacity.stop_after_attempt(5), - retry=tenacity.retry_if_result(lambda result: result is False), + @retry( + wait=wait_fixed(5), + stop=stop_after_attempt(5), + retry=retry_if_result(lambda result: result is False), reraise=True, ) def is_sentinel_discovered(self) -> bool: @@ -76,7 +76,7 @@ def is_sentinel_discovered(self) -> bool: return False except ValkeyWorkloadCommandError: logger.warning(f"Could not query sentinel at {sentinel_ip} for primary discovery.") - continue + return False return True def get_primary_ip(self) -> str | None: @@ -99,13 +99,14 @@ def get_primary_ip(self) -> str | None: primary_ip = output.strip().split()[0] logger.info(f"Primary IP address is {primary_ip}") return primary_ip - except (IndexError, ValkeyWorkloadCommandError): - logger.error("Could not get primary IP from sentinel output.") + except (IndexError, ValkeyWorkloadCommandError) as e: + logger.error("Could not get primary IP from sentinel output: %s", e) logger.error( "Could not determine primary IP from sentinels. Number of started servers: %d.", len(started_servers), ) + return None def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the sentinel manager's statuses.""" @@ -113,4 +114,4 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje scope=scope, component=self.name, running_status_only=True, running_status_type="async" ).root - return status_list if status_list else [CharmStatuses.ACTIVE_IDLE.value] + return status_list or [CharmStatuses.ACTIVE_IDLE.value] diff --git a/src/statuses.py b/src/statuses.py index 23cdd81..b19d875 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -29,7 +29,7 @@ class CharmStatuses(Enum): ) WAITING_TO_START = StatusObject( status="maintenance", - message="Waiting for leader to authorize service start", + message="Waiting for leader to allow service start", ) CONFIGURATION_ERROR = StatusObject( status="blocked", @@ -59,7 +59,7 @@ class ClusterStatuses(Enum): WAITING_FOR_PRIMARY_START = StatusObject( status="maintenance", - message="Waiting for primary to start and become active...", + message="Waiting for the primary unit to start...", ) @@ -68,11 +68,11 @@ class ValkeyServiceStatuses(Enum): SERVICE_STARTING = StatusObject( status="maintenance", - message="waiting for valkey to start...", + message="Waiting for Valkey to start...", running="async", ) SERVICE_NOT_RUNNING = StatusObject( status="blocked", - message="valkey service not running", + message="Valkey service not running", running="async", ) diff --git a/src/workload_k8s.py b/src/workload_k8s.py index c991e32..37899c6 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -31,13 +31,13 @@ def __init__(self, container: ops.Container | None) -> None: raise AttributeError("Container is required.") self.container = container - self.root = pathops.ContainerPath("/", container=self.container) - self.config_file = self.root / CONFIG_FILE - self.sentinel_config = self.root / SENTINEL_CONFIG_FILE - self.acl_file = self.root / ACL_FILE - self.sentinel_acl_file = self.root / SENTINEL_ACL_FILE + self.root_dir = pathops.ContainerPath("/", container=self.container) + self.config_file = self.root_dir / CONFIG_FILE + self.sentinel_config_file = self.root_dir / SENTINEL_CONFIG_FILE + self.acl_file = self.root_dir / ACL_FILE + self.sentinel_acl_file = self.root_dir / SENTINEL_ACL_FILE # todo: update this path once directories in the rock are complying with the standard - self.working_dir = self.root / "var/lib/valkey" + self.working_dir = self.root_dir / "var/lib/valkey" self.valkey_service = "valkey" self.sentinel_service = "valkey-sentinel" self.metric_service = "metric_exporter" @@ -67,7 +67,7 @@ def pebble_layer(self) -> ops.pebble.Layer: self.sentinel_service: { "override": "replace", "summary": "Valkey sentinel service", - "command": f"valkey-sentinel {self.sentinel_config.as_posix()}", + "command": f"valkey-sentinel {self.sentinel_config_file.as_posix()}", "user": self.user, "group": self.user, "startup": "enabled", diff --git a/src/workload_vm.py b/src/workload_vm.py index 949383f..c646260 100644 --- a/src/workload_vm.py +++ b/src/workload_vm.py @@ -37,12 +37,12 @@ def __init__(self) -> None: with attempt: self.valkey = snap.SnapCache()[SNAP_NAME] - self.root = pathops.LocalPath("/") - self.config_file = self.root / SNAP_CURRENT_PATH / SNAP_CONFIG_FILE - self.sentinel_config = self.root / SNAP_CURRENT_PATH / SNAP_SENTINEL_CONFIG_FILE - self.acl_file = self.root / SNAP_CURRENT_PATH / SNAP_ACL_FILE - self.sentinel_acl_file = self.root / SNAP_CURRENT_PATH / SNAP_SENTINEL_ACL_FILE - self.working_dir = self.root / SNAP_COMMON_PATH / "var/lib/charmed-valkey" + self.root_dir = pathops.LocalPath("/") + self.config_file = self.root_dir / SNAP_CURRENT_PATH / SNAP_CONFIG_FILE + self.sentinel_config_file = self.root_dir / SNAP_CURRENT_PATH / SNAP_SENTINEL_CONFIG_FILE + self.acl_file = self.root_dir / SNAP_CURRENT_PATH / SNAP_ACL_FILE + self.sentinel_acl_file = self.root_dir / SNAP_CURRENT_PATH / SNAP_SENTINEL_ACL_FILE + self.working_dir = self.root_dir / SNAP_COMMON_PATH / "var/lib/charmed-valkey" self.cli = "charmed-valkey.cli" self.user = "snap_daemon" From 0c4eb4eabdba8900d0c961e42173b355080e500e Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 16 Feb 2026 10:37:30 +0000 Subject: [PATCH 080/282] refactor client and add health checks --- src/common/client.py | 223 +++++++++++++++++++++++++++++++++++++- src/events/base_events.py | 47 ++++++-- src/literals.py | 1 + src/managers/cluster.py | 92 +++++++++------- src/managers/sentinel.py | 37 +++++-- src/statuses.py | 2 +- 6 files changed, 335 insertions(+), 67 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index 17f563e..75ae51d 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -6,8 +6,9 @@ import logging from typing import Literal +from common.exceptions import ValkeyWorkloadCommandError from core.base_workload import WorkloadBase -from literals import CLIENT_PORT, SENTINEL_PORT +from literals import CLIENT_PORT, PRIMARY_NAME, SENTINEL_PORT logger = logging.getLogger(__name__) @@ -45,8 +46,6 @@ def exec_cli_command( ValkeyWorkloadCommandError: If the CLI command fails to execute. """ port = CLIENT_PORT if self.connect_to == "valkey" else SENTINEL_PORT - user = self.username - password = self.password cli_command: list[str] = [ self.workload.cli, "-h", @@ -54,9 +53,223 @@ def exec_cli_command( "-p", str(port), "--user", - user, + self.username, "--pass", - password, + self.password, ] + command output, error = self.workload.exec(cli_command) return output, error + + def ping(self, hostname: str) -> bool: + """Ping the Valkey server to check if it's responsive. + + Args: + hostname (str): The hostname to connect to. + + Returns: + bool: True if the server responds to the ping command, False otherwise. + """ + try: + output, _ = self.exec_cli_command(["ping"], hostname=hostname) + return "PONG" in output + except ValkeyWorkloadCommandError: + return False + + def get_persistence_info(self, hostname: str) -> dict[str, str] | None: + """Get the persistence information of the Valkey server. + + Args: + hostname (str): The hostname to connect to. + + Returns: + dict[str, str] | None: The persistence information retrieved from the server. + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute. + """ + output, _ = self.exec_cli_command(["info", "persistence"], hostname=hostname) + values = {} + if not output.strip(): + logger.warning(f"No persistence info found on Valkey server at {hostname}.") + return None + for line in output.strip().splitlines(): + if line.startswith("#"): + continue + values_parts = line.split(":", 1) + if len(values_parts) != 2: + logger.error( + "Unexpected output format when getting persistence info from Valkey server at %s: %s", + hostname, + output, + ) + return None + values[values_parts[0]] = values_parts[1] + return values + + def set_value(self, hostname: str, key: str, value: str) -> bool: + """Set a key-value pair on the Valkey server. + + Args: + hostname (str): The hostname to connect to. + key (str): The key to set. + value (str): The value to set for the key. + + Returns: + bool: True if the command executed successfully, False otherwise. + """ + try: + output, err = self.exec_cli_command(["set", key, value], hostname=hostname) + if output.strip() == "OK": + return True + logger.error( + "Failed to set key %s on Valkey server at %s: stdout: %s, stderr: %s", + key, + hostname, + output, + err, + ) + return False + except ValkeyWorkloadCommandError as e: + logger.error(f"Failed to set key {key} on Valkey server at {hostname}: {e}") + return False + + def is_replica_synced(self, hostname: str) -> bool: + """Check if the replica is synced with the primary. + + Args: + hostname (str): The hostname to connect to. + + Returns: + bool: True if the replica is synced with the primary, False otherwise. + """ + try: + output, _ = self.exec_cli_command(["role"], hostname=hostname) + output_parts = output.strip().split() + return ( + bool(output_parts) + and output_parts[0] == "slave" + and output_parts[3] == "connected" + ) + except ValkeyWorkloadCommandError: + logger.warning( + "Could not determine replica sync status from Valkey server at %s.", hostname + ) + return False + + def config_set(self, hostname: str, parameter: str, value: str) -> bool: + """Set a runtime configuration parameter on the Valkey server. + + Args: + hostname (str): The hostname to connect to. + parameter (str): The configuration parameter to set. + value (str): The value to set for the configuration parameter. + + Returns: + bool: True if the command executed successfully, False otherwise. + """ + try: + output, err = self.exec_cli_command( + ["config", "set", parameter, value], hostname=hostname + ) + if output.strip() == "OK": + return True + logger.error( + "Failed to set config %s on Valkey server at %s: stdout: %s, stderr: %s", + parameter, + hostname, + output, + err, + ) + return False + except ValkeyWorkloadCommandError as e: + logger.error(f"Failed to set config {parameter} on Valkey server at {hostname}: {e}") + return False + + def load_acl(self, hostname: str) -> bool: + """Load the ACL file into the Valkey server. + + Args: + hostname (str): The hostname to connect to. + + Returns: + bool: True if the ACL file was loaded successfully, False otherwise. + """ + try: + output, err = self.exec_cli_command(["acl", "load"], hostname=hostname) + if output.strip() == "OK": + return True + logger.error( + "Failed to load ACL file on Valkey server at %s: stdout: %s, stderr: %s", + hostname, + output, + err, + ) + return False + except ValkeyWorkloadCommandError as e: + logger.error(f"Failed to load ACL file on Valkey server at {hostname}: {e}") + return False + + def sentinel_get_primary_ip(self, hostname: str) -> str | None: + """Get the primary IP address from the sentinel. + + Args: + hostname (str): The hostname to connect to. + + Returns: + str | None: The primary IP address if retrieved successfully, None otherwise. + """ + if not self.connect_to == "sentinel": + logger.error( + "Attempted to get primary IP from sentinel while client is configured to connect to valkey." + ) + raise ValueError("Client is not configured to connect to sentinel.") + try: + output, _ = self.exec_cli_command( + command=["sentinel", "get-master-addr-by-name", PRIMARY_NAME], hostname=hostname + ) + output_parts = output.strip().split() + if len(output_parts) != 2: + logger.error( + "Unexpected output format when getting primary IP from sentinel at %s: %s", + hostname, + output, + ) + return None + return output_parts[0] + except ValkeyWorkloadCommandError as e: + logger.error(f"Failed to get primary IP from sentinel at {hostname}: {e}") + return None + + def sentinel_get_master_info(self, hostname: str) -> dict[str, str] | None: + """Get the master info from the sentinel. + + Args: + hostname (str): The hostname to connect to. + + Returns: + dict[str, str] | None: The master info if retrieved successfully, None otherwise. + """ + if not self.connect_to == "sentinel": + logger.error( + "Attempted to get master info from sentinel while client is configured to connect to valkey." + ) + raise ValueError("Client is not configured to connect to sentinel.") + try: + output, _ = self.exec_cli_command( + command=["sentinel", "master", PRIMARY_NAME], hostname=hostname + ) + if not output.strip(): + logger.warning(f"No master info found in sentinel at {hostname}.") + return None + info_parts = output.strip().split() + if len(info_parts) % 2 != 0: + logger.error( + "Unexpected output format when getting master info from sentinel at %s: %s", + hostname, + output, + ) + return None + return {info_parts[i]: info_parts[i + 1] for i in range(0, len(info_parts), 2)} + except ValkeyWorkloadCommandError as e: + logger.error(f"Failed to get master info from sentinel at {hostname}: {e}") + return None diff --git a/src/events/base_events.py b/src/events/base_events.py index 3c98c03..0b7b4d0 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -36,6 +36,18 @@ class UnitFullyStarted(ops.EventBase): The Valkey service is running and the current node is in sync with the primary (if a replica). """ + def __init__(self, handle: ops.Handle, is_primary: bool = False): + super().__init__(handle) + self.is_primary = is_primary + + def snapshot(self) -> dict[str, str]: + """Save the state of the event.""" + return {"is_primary": str(self.is_primary)} + + def restore(self, snapshot: dict[str, str]) -> None: + """Restore the state of the event.""" + self.is_primary = snapshot.get("is_primary", "False") == "True" + class BaseEvents(ops.Object): """Handle all base events.""" @@ -78,9 +90,9 @@ def _on_start(self, event: ops.StartEvent) -> None: primary_ip = self.charm.sentinel_manager.get_primary_ip() if self.charm.unit.is_leader() and not primary_ip: - self._start_services(event, primary_ip=self.charm.state.bind_address) - logger.info("Services started") - self.charm.state.unit_server.update({"start_state": StartState.STARTED.value}) + if not self._start_services(event, primary_ip=self.charm.state.bind_address): + return + self.unit_fully_started.emit(is_primary=True) return if not self.charm.state.cluster.internal_users_credentials or not primary_ip: @@ -100,7 +112,7 @@ def _on_start(self, event: ops.StartEvent) -> None: if not self._start_services(event, primary_ip=primary_ip): return - self.unit_fully_started.emit() + self.unit_fully_started.emit(is_primary=False) def _start_services(self, event: ops.StartEvent, primary_ip: str) -> bool: """Start Valkey and Sentinel services.""" @@ -161,8 +173,25 @@ def _start_services(self, event: ops.StartEvent, primary_ip: str) -> bool: # TODO check how to trigger if deferred without update status event def _on_unit_fully_started(self, event: UnitFullyStarted) -> None: """Handle the unit-fully-started event.""" - # Only ran on non-leader units when starting replicas - if not self.charm.sentinel_manager.is_sentinel_discovered(): + if not self.charm.cluster_manager.is_healthy( + is_primary=event.is_primary, check_replica_sync=False + ): + logger.warning("Unit is not healthy after start, deferring event.") + self.charm.state.unit_server.update( + {"start_state": StartState.STARTING_WAITING_VALKEY.value} + ) + event.defer() + return + + if not self.charm.sentinel_manager.is_healthy(): + logger.warning("Sentinel is not healthy after start, deferring event.") + self.charm.state.unit_server.update( + {"start_state": StartState.STARTING_WAITING_SENTINEL.value} + ) + event.defer() + return + + if not event.is_primary and not self.charm.sentinel_manager.is_sentinel_discovered(): logger.info("Sentinel service not yet discovered by other units. Deferring event.") self.charm.state.unit_server.update( {"start_state": StartState.STARTING_WAITING_SENTINEL.value} @@ -170,7 +199,7 @@ def _on_unit_fully_started(self, event: UnitFullyStarted) -> None: event.defer() return - if not self.charm.cluster_manager.is_replica_synced(): + if not event.is_primary and not self.charm.cluster_manager.is_replica_synced(): logger.info("Replica not yet synced. Deferring event.") self.charm.state.unit_server.update( {"start_state": StartState.STARTING_WAITING_REPLICA_SYNC.value} @@ -322,9 +351,9 @@ def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: try: self.charm.config_manager.set_acl_file() self.charm.cluster_manager.reload_acl_file() - self.charm.cluster_manager.update_primary_auth() # update the local unit admin password to match the leader self.charm.config_manager.update_local_valkey_admin_password() + self.charm.cluster_manager.update_primary_auth() except (ValkeyACLLoadError, ValkeyConfigSetError, ValkeyWorkloadCommandError) as e: logger.error(e) self.charm.status.set_running_status( @@ -383,7 +412,6 @@ def _update_internal_users_password(self, secret_id: str) -> None: try: self.charm.config_manager.set_acl_file(passwords=new_passwords) self.charm.cluster_manager.reload_acl_file() - self.charm.cluster_manager.update_primary_auth() self.charm.state.cluster.update( { f"{user.value.replace('-', '_')}_password": new_passwords[user.value] @@ -392,6 +420,7 @@ def _update_internal_users_password(self, secret_id: str) -> None: ) # update the local unit admin password self.charm.config_manager.update_local_valkey_admin_password() + self.charm.cluster_manager.update_primary_auth() except ( ValkeyACLLoadError, ValueError, diff --git a/src/literals.py b/src/literals.py index bab1fc8..07e6c38 100644 --- a/src/literals.py +++ b/src/literals.py @@ -75,6 +75,7 @@ class StartState(StrEnum): """Start states for the service.""" NOT_STARTED = "not_started" + STARTING_WAITING_VALKEY = "starting_waiting_valkey" STARTING_WAITING_SENTINEL = "starting_waiting_sentinel" STARTING_WAITING_REPLICA_SYNC = "starting_waiting_replica_sync" STARTED = "started" diff --git a/src/managers/cluster.py b/src/managers/cluster.py index ed5277f..396e8b0 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -15,12 +15,11 @@ from common.exceptions import ( ValkeyACLLoadError, ValkeyConfigSetError, - ValkeyWorkloadCommandError, ) from core.base_workload import WorkloadBase from core.cluster_state import ClusterState from literals import CharmUsers, StartState -from statuses import CharmStatuses, ClusterStatuses +from statuses import CharmStatuses, ClusterStatuses, ValkeyServiceStatuses logger = logging.getLogger(__name__) @@ -43,14 +42,12 @@ def admin_password(self) -> str: def reload_acl_file(self) -> None: """Reload the ACL file into the cluster.""" - try: - client = ValkeyClient( - username=self.admin_user, - password=self.admin_password, - workload=self.workload, - ) - client.exec_cli_command(["acl", "load"], hostname=self.state.bind_address) - except ValkeyWorkloadCommandError: + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + workload=self.workload, + ) + if not client.load_acl(hostname=self.state.bind_address): raise ValkeyACLLoadError("Could not load ACL file into Valkey cluster.") def update_primary_auth(self) -> None: @@ -60,27 +57,20 @@ def update_primary_auth(self) -> None: password=self.admin_password, workload=self.workload, ) - try: - client.exec_cli_command( - [ - "config", - "set", - "primaryauth", - self.state.cluster.internal_users_credentials.get( - CharmUsers.VALKEY_REPLICA.value, "" - ), - ], - hostname=self.state.bind_address, - ) - logger.info("Updated primaryauth runtime configuration on Valkey server") - except ValkeyWorkloadCommandError: + if not client.config_set( + hostname=self.state.bind_address, + parameter="primaryauth", + value=self.state.cluster.internal_users_credentials.get( + CharmUsers.VALKEY_REPLICA.value, "" + ), + ): raise ValkeyConfigSetError("Could not set primaryauth on Valkey server.") @retry( wait=wait_fixed(5), stop=stop_after_attempt(5), retry=retry_if_result(lambda result: result is False), - reraise=True, + retry_error_callback=lambda _: False, ) def is_replica_synced(self) -> bool: """Check if the replica is synced with the primary.""" @@ -89,24 +79,41 @@ def is_replica_synced(self) -> bool: password=self.admin_password, workload=self.workload, ) - try: - output = ( - client.exec_cli_command( - command=["role"], - hostname=self.state.bind_address, - )[0] - .strip() - .split() - ) - if output and output[0] == "slave" and output[3] == "connected": - logger.info("Replica is synced with primary") - return True + return client.is_replica_synced(hostname=self.state.bind_address) + @retry( + wait=wait_fixed(5), + stop=stop_after_attempt(5), + retry=retry_if_result(lambda result: result is False), + retry_error_callback=lambda _: False, + ) + def is_healthy(self, is_primary: bool = False, check_replica_sync: bool = True) -> bool: + """Check if a valkey instance is healthy.""" + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + workload=self.workload, + ) + if not client.ping(hostname=self.state.bind_address): + logger.warning("Health check failed: Valkey server did not respond to ping.") return False - except ValkeyWorkloadCommandError: - logger.warning("Could not determine replica sync status from Valkey server.") + if ( + persistence_info := client.get_persistence_info(hostname=self.state.bind_address) + ) and persistence_info.get("loading", "") != "0": + logger.warning("Health check failed: Valkey server is still loading data.") + return False + if is_primary and not client.set_value( + hostname=self.state.bind_address, key="healthcheck", value="ok" + ): + logger.warning("Health check failed: Could not set test key on Valkey server.") + return False + + if not is_primary and check_replica_sync and not self.is_replica_synced(): + logger.warning("Health check failed: Replica is not synced with primary.") return False + return True + def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the cluster manager's statuses.""" status_list: list[StatusObject] = self.state.statuses.get( @@ -120,9 +127,6 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje if not self.state.cluster.model or not self.state.unit_server.model: return status_list or [CharmStatuses.ACTIVE_IDLE.value] - if self.state.charm.unit.is_leader(): - return status_list or [CharmStatuses.ACTIVE_IDLE.value] - # non leader statuses match self.state.unit_server.model.start_state: case StartState.NOT_STARTED.value: @@ -137,6 +141,10 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje status_list.append( CharmStatuses.WAITING_TO_START.value, ) + case StartState.STARTING_WAITING_VALKEY.value: + status_list.append( + ValkeyServiceStatuses.SERVICE_STARTING.value, + ) case StartState.STARTING_WAITING_SENTINEL.value: status_list.append( ClusterStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value, diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index 9326159..093ceb3 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -45,7 +45,7 @@ def admin_password(self) -> str: wait=wait_fixed(5), stop=stop_after_attempt(5), retry=retry_if_result(lambda result: result is False), - reraise=True, + retry_error_callback=lambda _: False, ) def is_sentinel_discovered(self) -> bool: """Check if the sentinel of the local unit was discovered by the other sentinels in the cluster.""" @@ -91,23 +91,40 @@ def get_primary_ip(self) -> str | None: ) for unit in started_servers: - try: - output = client.exec_cli_command( - command=["sentinel", "get-master-addr-by-name", PRIMARY_NAME], - hostname=unit.model.private_ip, - )[0] - primary_ip = output.strip().split()[0] + if primary_ip := client.sentinel_get_primary_ip(hostname=unit.model.private_ip): logger.info(f"Primary IP address is {primary_ip}") return primary_ip - except (IndexError, ValkeyWorkloadCommandError) as e: - logger.error("Could not get primary IP from sentinel output: %s", e) - logger.error( "Could not determine primary IP from sentinels. Number of started servers: %d.", len(started_servers), ) return None + @retry( + wait=wait_fixed(5), + stop=stop_after_attempt(5), + retry=retry_if_result(lambda result: result is False), + retry_error_callback=lambda retry_state: False, + ) + def is_healthy(self) -> bool: + """Check if the sentinel service is healthy.""" + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + workload=self.workload, + connect_to="sentinel", + ) + + if not client.ping(hostname=self.state.bind_address): + logger.warning("Health check failed: Sentinel did not respond to ping.") + return False + + if not client.sentinel_get_master_info(hostname=self.state.bind_address): + logger.warning("Health check failed: Could not query sentinel for master information.") + return False + + return True + def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the sentinel manager's statuses.""" status_list: list[StatusObject] = self.state.statuses.get( diff --git a/src/statuses.py b/src/statuses.py index b19d875..e42b1f4 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -49,7 +49,7 @@ class ClusterStatuses(Enum): WAITING_FOR_SENTINEL_DISCOVERY = StatusObject( status="maintenance", - message="Waiting for sentinel to be discovered by other units...", + message="Waiting for sentinel to start and be discovered by other units...", ) WAITING_FOR_REPLICA_SYNC = StatusObject( From 994e852036e45c813b53c6199afc52f91ca2e130 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 16 Feb 2026 10:49:54 +0000 Subject: [PATCH 081/282] mock tenacity nap times and fix unit tests --- tests/unit/conftest.py | 5 ++ tests/unit/test_charm.py | 153 ++++++++++++++++++++++++++------------- 2 files changed, 106 insertions(+), 52 deletions(-) diff --git a/tests/unit/conftest.py b/tests/unit/conftest.py index ea04b33..41a6a18 100644 --- a/tests/unit/conftest.py +++ b/tests/unit/conftest.py @@ -27,6 +27,11 @@ def mock_bind_address(mocker): ) +@pytest.fixture(autouse=True) +def tenacity_wait(mocker): + mocker.patch("tenacity.nap.time") + + @pytest.fixture(autouse=True) def cloud_spec(): return testing.CloudSpec( diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index d8eed58..4816d92 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -19,7 +19,7 @@ CharmUsers, StartState, ) -from src.statuses import CharmStatuses, ClusterStatuses +from src.statuses import CharmStatuses, ClusterStatuses, ValkeyServiceStatuses from .helpers import status_is @@ -83,21 +83,38 @@ def test_start_leader_unit(cloud_spec): } # generate passwords - state_out = ctx.run(ctx.on.leader_elected(), state_in) + state_in = ctx.run(ctx.on.leader_elected(), state_in) # start event - state_out = ctx.run(ctx.on.start(), state_out) - assert state_out.get_container(container.name).plan == expected_plan - assert ( - state_out.get_container(container.name).service_statuses[SERVICE_VALKEY] - == pebble.ServiceStatus.ACTIVE - ) - assert ( - state_out.get_container(container.name).service_statuses[SERVICE_METRIC_EXPORTER] - == pebble.ServiceStatus.ACTIVE - ) - assert state_out.unit_status == ActiveStatus() - assert state_out.app_status == ActiveStatus() + with patch("common.client.ValkeyClient.ping", return_value=False): + state_out = ctx.run(ctx.on.start(), state_in) + assert state_out.get_container(container.name).plan == expected_plan + assert ( + state_out.get_container(container.name).service_statuses[SERVICE_VALKEY] + == pebble.ServiceStatus.ACTIVE + ) + assert ( + state_out.get_container(container.name).service_statuses[SERVICE_METRIC_EXPORTER] + == pebble.ServiceStatus.ACTIVE + ) + assert status_is(state_out, ValkeyServiceStatuses.SERVICE_STARTING.value) + with ( + patch("common.client.ValkeyClient.ping", return_value=True), + patch("common.client.ValkeyClient.get_persistence_info", return_value={"loading": "0"}), + patch("common.client.ValkeyClient.set_value", return_value=True), + ): + state_out = ctx.run(ctx.on.start(), state_out) + assert status_is(state_out, ClusterStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value) + + with ( + patch("common.client.ValkeyClient.ping", return_value=True), + patch("common.client.ValkeyClient.get_persistence_info", return_value={"loading": "0"}), + patch("common.client.ValkeyClient.set_value", return_value=True), + patch("common.client.ValkeyClient.sentinel_get_master_info", return_value={"ip": "test"}), + ): + state_out = ctx.run(ctx.on.start(), state_out) + assert state_out.unit_status == ActiveStatus() + assert state_out.app_status == ActiveStatus() # container not ready container = testing.Container(name=CONTAINER, can_connect=False) @@ -163,8 +180,30 @@ def test_start_non_leader_unit(cloud_spec): assert status_is(state_out, CharmStatuses.WAITING_TO_START.value) + # health check + with patch("common.client.ValkeyClient.is_replica_synced", return_value=False): + relation = testing.PeerRelation( + id=1, + endpoint=PEER_RELATION, + local_app_data={"starting-member": "valkey/0"}, + peers_data={1: {"start-state": "started"}}, + ) + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + leader=False, + relations={relation, status_peer_relation}, + secrets={internal_passwords_secret}, + containers={container}, + ) + state_out = ctx.run(ctx.on.start(), state_in) + assert status_is(state_out, ValkeyServiceStatuses.SERVICE_STARTING.value) + # replica syncing - with patch("managers.cluster.ClusterManager.is_replica_synced", return_value=False): + with ( + patch("managers.cluster.ClusterManager.is_replica_synced", return_value=False), + patch("managers.cluster.ClusterManager.is_healthy", return_value=True), + patch("managers.sentinel.SentinelManager.is_healthy", return_value=True), + ): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, @@ -182,7 +221,11 @@ def test_start_non_leader_unit(cloud_spec): assert status_is(state_out, ClusterStatuses.WAITING_FOR_REPLICA_SYNC.value) # sentinel not yet discovered - with patch("managers.sentinel.SentinelManager.is_sentinel_discovered", return_value=False): + with ( + patch("managers.sentinel.SentinelManager.is_sentinel_discovered", return_value=False), + patch("managers.cluster.ClusterManager.is_healthy", return_value=True), + patch("managers.sentinel.SentinelManager.is_healthy", return_value=True), + ): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, @@ -203,6 +246,8 @@ def test_start_non_leader_unit(cloud_spec): with ( patch("managers.sentinel.SentinelManager.is_sentinel_discovered", return_value=True), patch("managers.cluster.ClusterManager.is_replica_synced", return_value=True), + patch("managers.cluster.ClusterManager.is_healthy", return_value=True), + patch("managers.sentinel.SentinelManager.is_healthy", return_value=True), ): relation = testing.PeerRelation( id=1, @@ -413,11 +458,13 @@ def test_config_changed_leader_unit(cloud_spec): ) with ( patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("common.client.ValkeyClient.exec_cli_command") as mock_exec_command, + patch("common.client.ValkeyClient.load_acl") as mock_load_acl, + patch("common.client.ValkeyClient.config_set") as mock_config_set, ): state_out = ctx.run(ctx.on.config_changed(), state_in) mock_set_acl_file.assert_called_once() - assert mock_exec_command.call_count == 2 # one for acl load, one for primaryauth set + mock_load_acl.assert_called_once() + mock_config_set.assert_called_once() secret_out = state_out.get_secret( label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" ) @@ -427,38 +474,38 @@ def test_config_changed_leader_unit(cloud_spec): ) -def test_config_changed_leader_unit_primary(cloud_spec): - ctx = testing.Context(ValkeyCharm, app_trusted=True) - relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) - container = testing.Container(name=CONTAINER, can_connect=True) - - password_secret = testing.Secret( - tracked_content={user.value: "secure-password" for user in CharmUsers}, - remote_grants=APP_NAME, - ) - state_in = testing.State( - leader=True, - relations={relation}, - containers={container}, - secrets={password_secret}, - config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, - model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), - ) - with ( - patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("common.client.ValkeyClient.exec_cli_command") as mock_exec_command, - patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="127.0.1.1"), - ): - state_out = ctx.run(ctx.on.config_changed(), state_in) - mock_set_acl_file.assert_called_once() - assert mock_exec_command.call_count == 2 # one for acl load, one for primaryauth set - secret_out = state_out.get_secret( - label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" - ) - assert ( - secret_out.latest_content.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") - == "secure-password" - ) +# def test_config_changed_leader_unit_primary(cloud_spec): +# ctx = testing.Context(ValkeyCharm, app_trusted=True) +# relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) +# container = testing.Container(name=CONTAINER, can_connect=True) + +# password_secret = testing.Secret( +# tracked_content={user.value: "secure-password" for user in CharmUsers}, +# remote_grants=APP_NAME, +# ) +# state_in = testing.State( +# leader=True, +# relations={relation}, +# containers={container}, +# secrets={password_secret}, +# config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, +# model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), +# ) +# with ( +# patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, +# patch("common.client.ValkeyClient.load_acl") as mock_load_acl, +# patch("common.client.ValkeyClient.config_set") as mock_config_set, +# patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="127.0.1.1"), +# ): +# state_out = ctx.run(ctx.on.config_changed(), state_in) +# mock_set_acl_file.assert_called_once() +# secret_out = state_out.get_secret( +# label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" +# ) +# assert ( +# secret_out.latest_content.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") +# == "secure-password" +# ) def test_config_changed_leader_unit_wrong_username(cloud_spec): @@ -520,13 +567,15 @@ def test_change_password_secret_changed_non_leader_unit(cloud_spec): "events.base_events.BaseEvents._update_internal_users_password" ) as mock_update_password, patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("common.client.ValkeyClient.exec_cli_command") as mock_exec_command, + patch("common.client.ValkeyClient.load_acl") as mock_load_acl, + patch("common.client.ValkeyClient.config_set") as mock_config_set, patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="127.0.1.1"), ): ctx.run(ctx.on.secret_changed(password_secret), state_in) mock_update_password.assert_not_called() mock_set_acl_file.assert_called_once() - assert mock_exec_command.call_count == 2 + mock_load_acl.assert_called_once() + mock_config_set.assert_called_once() def test_change_password_secret_changed_non_leader_unit_not_successful(cloud_spec): From 53a6285f93404e0c089433ede1b3134f92ee9b91 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 16 Feb 2026 10:54:35 +0000 Subject: [PATCH 082/282] update name of charmed_operator_password for units --- src/core/models.py | 4 ++-- src/managers/config.py | 4 +--- 2 files changed, 3 insertions(+), 5 deletions(-) diff --git a/src/core/models.py b/src/core/models.py index 642a628..fcf79bc 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -42,7 +42,7 @@ class PeerAppModel(PeerModel): class PeerUnitModel(PeerModel): """Model for the peer unit data.""" - charmed_operator_password: InternalUsersSecret = Field(default="") + charmed_operator_password_local_unit_copy: InternalUsersSecret = Field(default="") start_state: str = Field(default=StartState.NOT_STARTED.value) hostname: str = Field(default="") private_ip: str = Field(default="") @@ -125,7 +125,7 @@ def valkey_admin_password(self) -> str: """Retrieve the password for the valkey admin user.""" if not self.model: return "" - return self.model.charmed_operator_password or "" + return self.model.charmed_operator_password_local_unit_copy or "" @final diff --git a/src/managers/config.py b/src/managers/config.py index 820f8e4..9a5d364 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -217,9 +217,7 @@ def update_local_valkey_admin_password(self) -> None: ): logger.warning("No valkey admin password found to update local unit state") return - self.state.unit_server.update( - {f"{CharmUsers.VALKEY_ADMIN.value.replace('-', '_')}_password": app_password} - ) + self.state.unit_server.update({"charmed_operator_password_local_unit_copy": app_password}) def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the config manager's statuses.""" From 7e616ed0c0fc35aec465ff8668cf81db3fc65dd5 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 16 Feb 2026 12:49:08 +0000 Subject: [PATCH 083/282] remove unnecessary check on admin app password --- src/managers/config.py | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/src/managers/config.py b/src/managers/config.py index 9a5d364..c14019a 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -210,14 +210,13 @@ def generate_password(self) -> str: def update_local_valkey_admin_password(self) -> None: """Update the local unit's valkey admin password in the state.""" - if not ( - app_password := self.state.cluster.internal_users_credentials.get( - CharmUsers.VALKEY_ADMIN.value - ) - ): - logger.warning("No valkey admin password found to update local unit state") - return - self.state.unit_server.update({"charmed_operator_password_local_unit_copy": app_password}) + self.state.unit_server.update( + { + "charmed_operator_password_local_unit_copy": self.state.cluster.internal_users_credentials.get( + CharmUsers.VALKEY_ADMIN.value + ) + } + ) def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the config manager's statuses.""" From a9f33da438cd4f7325caaf4960ea80fbb0e6e8ad Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 16 Feb 2026 12:56:13 +0000 Subject: [PATCH 084/282] add alive check in start --- src/core/base_workload.py | 2 +- src/workload_k8s.py | 9 ++++++++- src/workload_vm.py | 18 ++++++++++++++++-- 3 files changed, 25 insertions(+), 4 deletions(-) diff --git a/src/core/base_workload.py b/src/core/base_workload.py index c6ce4d8..6ec1472 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -35,7 +35,7 @@ def can_connect(self) -> bool: pass @abstractmethod - def start(self) -> None: + def start(self) -> bool: """Start the workload service.""" pass diff --git a/src/workload_k8s.py b/src/workload_k8s.py index 37899c6..31a959a 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -9,6 +9,7 @@ import ops from charmlibs import pathops +from tenacity import retry, retry_if_result, stop_after_attempt, wait_fixed from common.exceptions import ValkeyWorkloadCommandError from core.base_workload import WorkloadBase @@ -85,11 +86,17 @@ def pebble_layer(self) -> ops.pebble.Layer: return ops.pebble.Layer(layer_config) @override - def start(self) -> None: + def start(self) -> bool: self.container.add_layer(CHARM, self.pebble_layer, combine=True) self.container.restart(self.valkey_service, self.sentinel_service, self.metric_service) + return self.alive() @override + @retry( + stop=stop_after_attempt(3), + wait=wait_fixed(1), + retry=retry_if_result(lambda healthy: not healthy), + ) def alive(self) -> bool: """Check if the Valkey service is running.""" for service_name in [ diff --git a/src/workload_vm.py b/src/workload_vm.py index c646260..1edf192 100644 --- a/src/workload_vm.py +++ b/src/workload_vm.py @@ -9,7 +9,14 @@ from typing import List, override from charmlibs import pathops, snap -from tenacity import Retrying, retry, retry_if_exception_type, stop_after_attempt, wait_fixed +from tenacity import ( + Retrying, + retry, + retry_if_exception_type, + retry_if_result, + stop_after_attempt, + wait_fixed, +) from common.exceptions import ValkeyWorkloadCommandError from core.base_workload import WorkloadBase @@ -88,11 +95,13 @@ def install(self, revision: str | None = None, retry_and_raise: bool = True) -> return False @override - def start(self) -> None: + def start(self) -> bool: try: self.valkey.start(services=[SNAP_SERVICE, SNAP_SENTINEL_SERVICE]) + return self.alive() except snap.SnapError as e: logger.exception(str(e)) + return False @override def exec(self, command: List[str]) -> tuple[str, str | None]: @@ -113,6 +122,11 @@ def exec(self, command: List[str]) -> tuple[str, str | None]: raise ValkeyWorkloadCommandError(e) @override + @retry( + stop=stop_after_attempt(3), + wait=wait_fixed(1), + retry=retry_if_result(lambda healthy: not healthy), + ) def alive(self) -> bool: """Check if the Valkey service is running.""" try: From d5c3a01b3104757a1d17b92fe6f08a66097886fb Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 17 Feb 2026 07:58:01 +0000 Subject: [PATCH 085/282] remove refresh argument from reading secret --- src/core/cluster_state.py | 5 ++--- src/events/base_events.py | 2 +- 2 files changed, 3 insertions(+), 4 deletions(-) diff --git a/src/core/cluster_state.py b/src/core/cluster_state.py index 9739f85..24d763e 100644 --- a/src/core/cluster_state.py +++ b/src/core/cluster_state.py @@ -112,18 +112,17 @@ def bind_address(self) -> str: return str(address) - def get_secret_from_id(self, secret_id: str, refresh: bool = False) -> dict[str, str]: + def get_secret_from_id(self, secret_id: str) -> dict[str, str]: """Resolve the given id of a Juju secret and return the content as a dict. Args: secret_id (str): The id of the secret. - refresh (bool): Whether to refresh the secret content from the controller. Defaults to False. Returns: dict: The content of the secret. """ try: - secret_content = self.charm.model.get_secret(id=secret_id).get_content(refresh=refresh) + secret_content = self.charm.model.get_secret(id=secret_id).get_content(refresh=True) except ops.SecretNotFoundError: raise ops.SecretNotFoundError(f"The secret '{secret_id}' does not exist.") except ops.ModelError: diff --git a/src/events/base_events.py b/src/events/base_events.py index 0b7b4d0..5b30a53 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -377,7 +377,7 @@ def _update_internal_users_password(self, secret_id: str) -> None: secret_id (str): The id of the secret containing the internal users' passwords. """ try: - secret_content = self.charm.state.get_secret_from_id(secret_id, refresh=True) + secret_content = self.charm.state.get_secret_from_id(secret_id) except (ops.ModelError, ops.SecretNotFoundError) as e: logger.error(e) self.charm.status.set_running_status( From bf491e848fd11c0cd9917a2159f49e8716509978 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 17 Feb 2026 09:12:31 +0000 Subject: [PATCH 086/282] read and manage sentinel config via a dict --- src/managers/config.py | 95 ++++++++++++++++++++++++++++++++++-------- 1 file changed, 78 insertions(+), 17 deletions(-) diff --git a/src/managers/config.py b/src/managers/config.py index c14019a..6542033 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -144,34 +144,95 @@ def _get_user_acl_line(self, user: CharmUsers, passwords: dict[str, str] | None password_hash = hashlib.sha256(password.encode("utf-8")).hexdigest() return f"user {user.value} on #{password_hash} {CHARM_USERS_ROLE_MAP[user]}\n" - def set_sentinel_config_properties(self, primary_ip: str) -> None: - """Write sentinel configuration file.""" - logger.debug("Writing Sentinel configuration") + def get_sentinel_config_properties(self, primary_ip: str) -> dict[str, str | dict[str, str]]: + """Assemble the sentinel config properties. - sentinel_config = f"port {SENTINEL_PORT}\n" + Returns: + Dictionary of sentinel properties to be written to the config file. + """ + config_properties = {} + if not self.state.unit_server.model or not self.state.cluster.model: + return config_properties + sentinel_properties = {} - sentinel_config += f"aclfile {self.workload.sentinel_acl_file.as_posix()}\n" - # TODO consider adding quorum calculation based on number of planned_units and the parity of the number of units - sentinel_config += ( - f"sentinel monitor {PRIMARY_NAME} {primary_ip} {CLIENT_PORT} {QUORUM_NUMBER}\n" + # load the config properties provided from the template in this repo + # it does NOT load the file from disk in the charm unit in order to avoid config drift + with open(f"{WORKING_DIR}/config-template/sentinel.conf") as config: + # The sentinel.conf file contains a number of directives that have a simple format: + # keyword argument1 argument2 ... argumentN + # sentinel keyword argument1 argument2 ... argumentN + for line in config: + line = line.strip().lower() + if not line or line.startswith("#"): + # ignore comments and empty lines + continue + elif line.startswith("sentinel "): + try: + key, value = line.split(" ", 2)[1:] + except ValueError: + key = line.strip().split(" ", 1)[1] + value = "" + sentinel_properties[key.strip()] = value.strip().replace( + "mymaster", PRIMARY_NAME + ) + else: + try: + key, value = line.split(" ", 1) + except ValueError: + key = line.strip() + value = "" + config_properties[key.strip()] = value.strip() + + config_properties["port"] = str(SENTINEL_PORT) + config_properties["aclfile"] = self.workload.sentinel_acl_file.as_posix() + + # sentinel configs + config_properties["sentinel"] = sentinel_properties | self._generate_sentinel_configs( + primary_ip=primary_ip ) + + return config_properties + + def _generate_sentinel_configs(self, primary_ip: str) -> dict[str, str]: + """Generate the sentinel config properties based on the current cluster state.""" + sentinel_configs = {} + # TODO consider adding quorum calculation based on number of planned_units and the parity of the number of units + sentinel_configs["monitor"] = f"{PRIMARY_NAME} {primary_ip} {CLIENT_PORT} {QUORUM_NUMBER}" # auth settings # auth-user is used by sentinel to authenticate to the valkey primary - sentinel_config += ( - f"sentinel auth-user {PRIMARY_NAME} {CharmUsers.VALKEY_SENTINEL.value}\n" + sentinel_configs["auth-user"] = f"{PRIMARY_NAME} {CharmUsers.VALKEY_SENTINEL.value}" + sentinel_configs["auth-pass"] = ( + f"{PRIMARY_NAME} {self.state.cluster.internal_users_credentials.get(CharmUsers.VALKEY_SENTINEL.value, '')}" ) - sentinel_config += f"sentinel auth-pass {PRIMARY_NAME} {self.state.cluster.internal_users_credentials.get(CharmUsers.VALKEY_SENTINEL.value, '')}\n" # sentinel admin user settings used by sentinel for its own authentication - sentinel_config += f"sentinel sentinel-user {CharmUsers.SENTINEL_ADMIN.value}\n" - sentinel_config += f"sentinel sentinel-pass {self.state.cluster.internal_users_credentials.get(CharmUsers.SENTINEL_ADMIN.value, '')}\n" + sentinel_configs["sentinel-user"] = f"{CharmUsers.SENTINEL_ADMIN.value}" + sentinel_configs["sentinel-pass"] = ( + f"{self.state.cluster.internal_users_credentials.get(CharmUsers.SENTINEL_ADMIN.value, '')}" + ) # TODO consider making these configs adjustable via charm config - sentinel_config += f"sentinel down-after-milliseconds {PRIMARY_NAME} 30000\n" - sentinel_config += f"sentinel failover-timeout {PRIMARY_NAME} 180000\n" - sentinel_config += f"sentinel parallel-syncs {PRIMARY_NAME} 1\n" + sentinel_configs["down-after-milliseconds"] = f"{PRIMARY_NAME} 30000" + sentinel_configs["failover-timeout"] = f"{PRIMARY_NAME} 180000" + sentinel_configs["parallel-syncs"] = f"{PRIMARY_NAME} 1" + return sentinel_configs + + def set_sentinel_config_properties(self, primary_ip: str) -> None: + """Write sentinel configuration file.""" + logger.debug("Writing Sentinel configuration") + + sentinel_config = self.get_sentinel_config_properties(primary_ip=primary_ip) + + sentinel_config_string = "\n".join( + f"sentinel {key} {value}" for key, value in sentinel_config["sentinel"].items() + ) + other_config_string = "\n".join( + f"{key} {value}" for key, value in sentinel_config.items() if key != "sentinel" + ) + full_config_string = f"{other_config_string}\n{sentinel_config_string}" + logger.debug("Full Sentinel config:\n%s", full_config_string) # on k8s we need to set the ownership of the sentinel config file to the non-root user that the valkey process runs as in order for sentinel to be able to read/write it self.workload.write_file( - sentinel_config, + full_config_string, self.workload.sentinel_config_file, mode=0o600, user=self.workload.user, From 27a6e23f0fd4f45bb3917eed3a87eb8b869ec770 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 17 Feb 2026 11:19:32 +0000 Subject: [PATCH 087/282] move workload fields to be body annotations --- src/core/base_workload.py | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/src/core/base_workload.py b/src/core/base_workload.py index 6ec1472..33a865b 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -17,16 +17,14 @@ class WorkloadBase(ABC): """Base interface for common workload operations.""" - def __init__(self) -> None: - """Initialize the WorkloadBase.""" - self.root_dir: pathops.PathProtocol - self.config_file: pathops.PathProtocol - self.sentinel_config_file: pathops.PathProtocol - self.acl_file: pathops.PathProtocol - self.sentinel_acl_file: pathops.PathProtocol - self.working_dir: pathops.PathProtocol - self.cli: str - self.user: str + root_dir: pathops.PathProtocol + config_file: pathops.PathProtocol + sentinel_config_file: pathops.PathProtocol + acl_file: pathops.PathProtocol + sentinel_acl_file: pathops.PathProtocol + working_dir: pathops.PathProtocol + cli: str + user: str @property @abstractmethod From 178f560fb4d7a72f4cc3ded10ffe754b57d79336 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 17 Feb 2026 11:41:21 +0000 Subject: [PATCH 088/282] some minor changes based on feedback --- src/managers/cluster.py | 17 +++++++---------- src/managers/sentinel.py | 6 ++---- 2 files changed, 9 insertions(+), 14 deletions(-) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 396e8b0..3cb535f 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -94,19 +94,16 @@ def is_healthy(self, is_primary: bool = False, check_replica_sync: bool = True) password=self.admin_password, workload=self.workload, ) + if not client.ping(hostname=self.state.bind_address): logger.warning("Health check failed: Valkey server did not respond to ping.") return False + if ( persistence_info := client.get_persistence_info(hostname=self.state.bind_address) ) and persistence_info.get("loading", "") != "0": logger.warning("Health check failed: Valkey server is still loading data.") return False - if is_primary and not client.set_value( - hostname=self.state.bind_address, key="healthcheck", value="ok" - ): - logger.warning("Health check failed: Could not set test key on Valkey server.") - return False if not is_primary and check_replica_sync and not self.is_replica_synced(): logger.warning("Health check failed: Replica is not synced with primary.") @@ -120,17 +117,17 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje scope=scope, component=self.name, running_status_only=True, running_status_type="async" ).root - if not self.workload.can_connect: - status_list.append(CharmStatuses.SERVICE_NOT_STARTED.value) - # Peer relation not established yet, or model not built yet for unit or app if not self.state.cluster.model or not self.state.unit_server.model: return status_list or [CharmStatuses.ACTIVE_IDLE.value] - # non leader statuses match self.state.unit_server.model.start_state: case StartState.NOT_STARTED.value: - if ( + if self.state.charm.unit.is_leader(): + status_list.append( + CharmStatuses.SERVICE_NOT_STARTED.value, + ) + elif ( not self.state.cluster.internal_users_credentials or not self.state.number_units_started ): diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index 093ceb3..18fff66 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -53,9 +53,7 @@ def is_sentinel_discovered(self) -> bool: active_sentinels = [ unit.model.private_ip for unit in self.state.servers - if unit.model - and unit.is_started - and unit.model.private_ip != self.state.unit_server.model.private_ip + if unit.is_started and unit.model.private_ip != self.state.unit_server.model.private_ip ] client = ValkeyClient( @@ -81,7 +79,7 @@ def is_sentinel_discovered(self) -> bool: def get_primary_ip(self) -> str | None: """Get the IP address of the primary node in the cluster.""" - started_servers = [unit for unit in self.state.servers if unit.model and unit.is_started] + started_servers = [unit for unit in self.state.servers if unit.is_started] client = ValkeyClient( username=self.admin_user, From ed477cfed777375d3b001e367201491f4750bc0b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Feb 2026 07:11:37 +0000 Subject: [PATCH 089/282] simplify and generalise start up logic --- src/common/exceptions.py | 12 ++++ src/core/base_workload.py | 15 ++++- src/events/base_events.py | 125 +++++++++++++++++++------------------- src/literals.py | 4 ++ src/managers/cluster.py | 42 +++++++------ src/managers/config.py | 1 - src/managers/sentinel.py | 2 +- src/statuses.py | 48 +++++++-------- src/workload_k8s.py | 20 ++++-- src/workload_vm.py | 45 ++++++++++++-- 10 files changed, 190 insertions(+), 124 deletions(-) diff --git a/src/common/exceptions.py b/src/common/exceptions.py index b3f65a1..756f285 100644 --- a/src/common/exceptions.py +++ b/src/common/exceptions.py @@ -22,3 +22,15 @@ class ValkeyConfigSetError(ValkeyClientError): class ValkeyWorkloadCommandError(Exception): """Custom Exception if any workload-related command fails.""" + + +class ValkeyServicesFailedToStartError(Exception): + """Custom Exception if Valkey service fails to start.""" + + +class ValkeyServiceNotAliveError(Exception): + """Custom Exception if Valkey service is not alive after start.""" + + +class ValkeyConfigurationError(Exception): + """Custom Exception if Valkey configuration fails to be set.""" diff --git a/src/core/base_workload.py b/src/core/base_workload.py index 33a865b..1f97310 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -33,8 +33,13 @@ def can_connect(self) -> bool: pass @abstractmethod - def start(self) -> bool: - """Start the workload service.""" + def start(self) -> None: + """Start the workload service. + + Raises: + ValkeyServicesFailedToStartError: If the service fails to start. + ValkeyServiceNotAliveError: If the service is not alive after start. + """ pass @abstractmethod @@ -44,7 +49,11 @@ def exec(self, command: list[str]) -> tuple[str, str | None]: @abstractmethod def alive(self) -> bool: - """Check if the Valkey service is running.""" + """Check if the Valkey services are running. + + Returns: + bool: True if the services are active, False otherwise. + """ pass def write_file( diff --git a/src/events/base_events.py b/src/events/base_events.py index 5b30a53..7f06c7d 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -10,7 +10,14 @@ import ops -from common.exceptions import ValkeyACLLoadError, ValkeyConfigSetError, ValkeyWorkloadCommandError +from common.exceptions import ( + ValkeyACLLoadError, + ValkeyConfigSetError, + ValkeyConfigurationError, + ValkeyServiceNotAliveError, + ValkeyServicesFailedToStartError, + ValkeyWorkloadCommandError, +) from literals import ( CLIENT_PORT, INTERNAL_USERS_PASSWORD_CONFIG, @@ -20,7 +27,7 @@ StartState, Substrate, ) -from statuses import CharmStatuses, ClusterStatuses, ValkeyServiceStatuses +from statuses import CharmStatuses, ClusterStatuses if TYPE_CHECKING: from charm import ValkeyCharm @@ -82,39 +89,62 @@ def _on_install(self, event: ops.InstallEvent) -> None: def _on_start(self, event: ops.StartEvent) -> None: """Handle the on start event.""" + self.charm.state.unit_server.update({"start_state": StartState.NOT_STARTED.value}) + if not self.charm.workload.can_connect: logger.warning("Workload not ready yet") event.defer() return - self.charm.state.unit_server.update({"start_state": StartState.NOT_STARTED.value}) - - primary_ip = self.charm.sentinel_manager.get_primary_ip() - if self.charm.unit.is_leader() and not primary_ip: - if not self._start_services(event, primary_ip=self.charm.state.bind_address): - return - self.unit_fully_started.emit(is_primary=True) - return - if not self.charm.state.cluster.internal_users_credentials or not primary_ip: + if not self.charm.state.cluster.internal_users_credentials: logger.info( - "Non-leader unit waiting for leader to set primary and internal user credentials" + "Internal users' credentials not set yet. Deferring start event until credentials are set." ) event.defer() return - self.charm.state.unit_server.update({"request_start_lock": True}) + self.charm.state.unit_server.update( + {"start_state": StartState.WAITING_TO_START.value, "request_start_lock": True} + ) + + if self.charm.unit.is_leader(): + logger.info( + "Leader unit requesting lock to start services. Triggering lock request processing." + ) + self._process_lock_requests() # TODO unit.name would not work across models we need to switch to using `model.unit.name + model_uuid` if self.charm.state.cluster.model.starting_member != self.charm.unit.name: - logger.info("Non-leader unit waiting for leader to choose it as starting member") + logger.info("Waiting for lock to start") event.defer() return - if not self._start_services(event, primary_ip=primary_ip): + primary_ip = self.charm.sentinel_manager.get_primary_ip() or self.charm.state.bind_address + + try: + self._configure_services(primary_ip) + self.charm.workload.start() + except ValkeyConfigurationError: + self.charm.state.unit_server.update( + {"start_state": StartState.CONFIGURATION_ERROR.value, "request_start_lock": False} + ) + event.defer() + return + except (ValkeyServicesFailedToStartError, ValkeyServiceNotAliveError) as e: + logger.error(e) + self.charm.state.unit_server.update( + {"start_state": StartState.ERROR_ON_START.value, "request_start_lock": False} + ) + event.defer() return - self.unit_fully_started.emit(is_primary=False) - def _start_services(self, event: ops.StartEvent, primary_ip: str) -> bool: + self.charm.state.unit_server.update( + {"start_state": StartState.STARTING_WAITING_VALKEY.value} + ) + + self.unit_fully_started.emit(is_primary=primary_ip == self.charm.state.bind_address) + + def _configure_services(self, primary_ip: str) -> None: """Start Valkey and Sentinel services.""" try: self.charm.config_manager.update_local_valkey_admin_password() @@ -122,53 +152,12 @@ def _start_services(self, event: ops.StartEvent, primary_ip: str) -> bool: self.charm.config_manager.set_acl_file() self.charm.config_manager.set_sentinel_config_properties(primary_ip=primary_ip) self.charm.config_manager.set_sentinel_acl_file() - except (ValkeyWorkloadCommandError, ValueError): - logger.error("Failed to set configuration") - self.charm.status.set_running_status( - CharmStatuses.CONFIGURATION_ERROR.value, - scope="unit", - component_name=self.charm.cluster_manager.name, - statuses_state=self.charm.state.statuses, - ) - event.defer() - return False - self.charm.state.statuses.delete( - CharmStatuses.CONFIGURATION_ERROR.value, - scope="unit", - component=self.charm.cluster_manager.name, - ) - self.charm.status.set_running_status( - ValkeyServiceStatuses.SERVICE_STARTING.value, - scope="unit", - component_name=self.charm.cluster_manager.name, - statuses_state=self.charm.state.statuses, - ) - - self.charm.workload.start() - if not self.charm.workload.alive(): - logger.error("Workload failed to start.") - self.charm.status.set_running_status( - ValkeyServiceStatuses.SERVICE_NOT_RUNNING.value, - scope="unit", - component_name=self.charm.cluster_manager.name, - statuses_state=self.charm.state.statuses, + except (ValkeyWorkloadCommandError, ValueError) as e: + logger.error("Failed to set configuration properties: %s", e) + self.charm.state.unit_server.update( + {"start_state": StartState.CONFIGURATION_ERROR.value, "request_start_lock": False} ) - return False - - logger.info("Workload started successfully. Opening client port") - self.charm.unit.open_port("tcp", CLIENT_PORT) - self.charm.state.statuses.delete( - ValkeyServiceStatuses.SERVICE_STARTING.value, - scope="unit", - component=self.charm.cluster_manager.name, - ) - - self.charm.state.statuses.delete( - ValkeyServiceStatuses.SERVICE_NOT_RUNNING.value, - scope="unit", - component=self.charm.cluster_manager.name, - ) - return True + raise ValkeyConfigurationError("Failed to set configuration") from e # TODO check how to trigger if deferred without update status event def _on_unit_fully_started(self, event: UnitFullyStarted) -> None: @@ -212,11 +201,20 @@ def _on_unit_fully_started(self, event: UnitFullyStarted) -> None: {"start_state": StartState.STARTED.value, "request_start_lock": False} ) + self.charm.unit.open_port("tcp", CLIENT_PORT) + def _on_peer_relation_changed(self, event: ops.RelationChangedEvent) -> None: """Handle event received by all units when a unit's relation data changes.""" if not self.charm.unit.is_leader(): return + self._process_lock_requests() + + def _process_lock_requests(self) -> None: + """Process start lock requests. + + The leader unit will choose one of the units that requested the lock to start, and update the cluster model with that unit as the starting member. + """ units_requesting_start = [ unit.unit_name for unit in self.charm.state.servers @@ -241,6 +239,7 @@ def _on_peer_relation_changed(self, event: ops.RelationChangedEvent) -> None: self.charm.state.cluster.model.starting_member, units_requesting_start, ) + return self.charm.state.cluster.update( {"starting_member": units_requesting_start[0] if units_requesting_start else ""} diff --git a/src/literals.py b/src/literals.py index 07e6c38..665b182 100644 --- a/src/literals.py +++ b/src/literals.py @@ -75,7 +75,11 @@ class StartState(StrEnum): """Start states for the service.""" NOT_STARTED = "not_started" + WAITING_TO_START = "waiting_to_start" + WAITING_FOR_PRIMARY_START = "waiting_for_primary_start" + CONFIGURATION_ERROR = "configuration_error" STARTING_WAITING_VALKEY = "starting_waiting_valkey" STARTING_WAITING_SENTINEL = "starting_waiting_sentinel" STARTING_WAITING_REPLICA_SYNC = "starting_waiting_replica_sync" + ERROR_ON_START = "error_on_start" STARTED = "started" diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 3cb535f..b8c7817 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -19,7 +19,7 @@ from core.base_workload import WorkloadBase from core.cluster_state import ClusterState from literals import CharmUsers, StartState -from statuses import CharmStatuses, ClusterStatuses, ValkeyServiceStatuses +from statuses import CharmStatuses, StartStatuses logger = logging.getLogger(__name__) @@ -123,32 +123,36 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje match self.state.unit_server.model.start_state: case StartState.NOT_STARTED.value: - if self.state.charm.unit.is_leader(): - status_list.append( - CharmStatuses.SERVICE_NOT_STARTED.value, - ) - elif ( - not self.state.cluster.internal_users_credentials - or not self.state.number_units_started - ): - status_list.append( - ClusterStatuses.WAITING_FOR_PRIMARY_START.value, - ) - else: - status_list.append( - CharmStatuses.WAITING_TO_START.value, - ) + status_list.append( + StartStatuses.SERVICE_NOT_STARTED.value, + ) + case StartState.WAITING_TO_START.value: + status_list.append( + StartStatuses.WAITING_TO_START.value, + ) + case StartState.WAITING_FOR_PRIMARY_START.value: + status_list.append( + StartStatuses.WAITING_FOR_PRIMARY_START.value, + ) + case StartState.CONFIGURATION_ERROR.value: + status_list.append( + StartStatuses.CONFIGURATION_ERROR.value, + ) case StartState.STARTING_WAITING_VALKEY.value: status_list.append( - ValkeyServiceStatuses.SERVICE_STARTING.value, + StartStatuses.SERVICE_STARTING.value, ) case StartState.STARTING_WAITING_SENTINEL.value: status_list.append( - ClusterStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value, + StartStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value, ) case StartState.STARTING_WAITING_REPLICA_SYNC.value: status_list.append( - ClusterStatuses.WAITING_FOR_REPLICA_SYNC.value, + StartStatuses.WAITING_FOR_REPLICA_SYNC.value, + ) + case StartState.ERROR_ON_START.value: + status_list.append( + StartStatuses.ERROR_ON_START.value, ) return status_list or [CharmStatuses.ACTIVE_IDLE.value] diff --git a/src/managers/config.py b/src/managers/config.py index 6542033..5c74c80 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -229,7 +229,6 @@ def set_sentinel_config_properties(self, primary_ip: str) -> None: ) full_config_string = f"{other_config_string}\n{sentinel_config_string}" - logger.debug("Full Sentinel config:\n%s", full_config_string) # on k8s we need to set the ownership of the sentinel config file to the non-root user that the valkey process runs as in order for sentinel to be able to read/write it self.workload.write_file( full_config_string, diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index 18fff66..04b3cc7 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -102,7 +102,7 @@ def get_primary_ip(self) -> str | None: wait=wait_fixed(5), stop=stop_after_attempt(5), retry=retry_if_result(lambda result: result is False), - retry_error_callback=lambda retry_state: False, + retry_error_callback=lambda _: False, ) def is_healthy(self) -> bool: """Check if the sentinel service is healthy.""" diff --git a/src/statuses.py b/src/statuses.py index e42b1f4..213054e 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -18,24 +18,11 @@ class CharmStatuses(Enum): status="active", message="", ) - SERVICE_NOT_STARTED = StatusObject( - status="blocked", - message="Service not started", - ) SECRET_ACCESS_ERROR = StatusObject( status="blocked", message="Cannot access configured secret, check permissions", running="async", ) - WAITING_TO_START = StatusObject( - status="maintenance", - message="Waiting for leader to allow service start", - ) - CONFIGURATION_ERROR = StatusObject( - status="blocked", - message="Configuration error, check logs for details", - running="async", - ) class ClusterStatuses(Enum): @@ -47,6 +34,26 @@ class ClusterStatuses(Enum): running="async", ) + +class StartStatuses(Enum): + """Collection of possible statuses related to the service start.""" + + SERVICE_NOT_STARTED = StatusObject( + status="maintenance", + message="Service not started", + ) + WAITING_TO_START = StatusObject( + status="maintenance", + message="Waiting for leader to allow service start", + ) + CONFIGURATION_ERROR = StatusObject( + status="blocked", + message="Configuration error, check logs for details", + ) + SERVICE_STARTING = StatusObject( + status="maintenance", + message="Waiting for Valkey to start...", + ) WAITING_FOR_SENTINEL_DISCOVERY = StatusObject( status="maintenance", message="Waiting for sentinel to start and be discovered by other units...", @@ -61,18 +68,7 @@ class ClusterStatuses(Enum): status="maintenance", message="Waiting for the primary unit to start...", ) - - -class ValkeyServiceStatuses(Enum): - """Collection of possible Valkey service related statuses.""" - - SERVICE_STARTING = StatusObject( - status="maintenance", - message="Waiting for Valkey to start...", - running="async", - ) - SERVICE_NOT_RUNNING = StatusObject( + ERROR_ON_START = StatusObject( status="blocked", - message="Valkey service not running", - running="async", + message="Error occurred during service start, check logs for details", ) diff --git a/src/workload_k8s.py b/src/workload_k8s.py index 31a959a..97f0dac 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -11,7 +11,11 @@ from charmlibs import pathops from tenacity import retry, retry_if_result, stop_after_attempt, wait_fixed -from common.exceptions import ValkeyWorkloadCommandError +from common.exceptions import ( + ValkeyServiceNotAliveError, + ValkeyServicesFailedToStartError, + ValkeyWorkloadCommandError, +) from core.base_workload import WorkloadBase from literals import ( ACL_FILE, @@ -86,19 +90,23 @@ def pebble_layer(self) -> ops.pebble.Layer: return ops.pebble.Layer(layer_config) @override - def start(self) -> bool: - self.container.add_layer(CHARM, self.pebble_layer, combine=True) - self.container.restart(self.valkey_service, self.sentinel_service, self.metric_service) - return self.alive() + def start(self) -> None: + try: + self.container.add_layer(CHARM, self.pebble_layer, combine=True) + self.container.restart(self.valkey_service, self.sentinel_service, self.metric_service) + except ops.pebble.ChangeError as e: + raise ValkeyServicesFailedToStartError(f"Failed to start Valkey services: {e}") from e + if not self.alive(): + raise ValkeyServiceNotAliveError("Valkey service is not alive after start.") @override @retry( stop=stop_after_attempt(3), wait=wait_fixed(1), retry=retry_if_result(lambda healthy: not healthy), + retry_error_callback=lambda _: False, ) def alive(self) -> bool: - """Check if the Valkey service is running.""" for service_name in [ self.valkey_service, self.sentinel_service, diff --git a/src/workload_vm.py b/src/workload_vm.py index 1edf192..2c3a043 100644 --- a/src/workload_vm.py +++ b/src/workload_vm.py @@ -6,6 +6,7 @@ import logging import subprocess +import time from typing import List, override from charmlibs import pathops, snap @@ -18,7 +19,11 @@ wait_fixed, ) -from common.exceptions import ValkeyWorkloadCommandError +from common.exceptions import ( + ValkeyServiceNotAliveError, + ValkeyServicesFailedToStartError, + ValkeyWorkloadCommandError, +) from core.base_workload import WorkloadBase from literals import ( SNAP_ACL_FILE, @@ -95,13 +100,19 @@ def install(self, revision: str | None = None, retry_and_raise: bool = True) -> return False @override - def start(self) -> bool: + def start(self) -> None: try: self.valkey.start(services=[SNAP_SERVICE, SNAP_SENTINEL_SERVICE]) - return self.alive() except snap.SnapError as e: logger.exception(str(e)) - return False + raise ValkeyServicesFailedToStartError(f"Failed to start Valkey services: {e}") from e + + # The service might start but fail to load and die immediately + # On k8s starting the services will wait (poll) for them to be started. + # We do the same here to make sure the services are alive after start. + if not self.wait_for_services_to_be_alive(duration=3): + logger.error("Valkey service is not alive after start.") + raise ValkeyServiceNotAliveError("Valkey service is not alive after start.") @override def exec(self, command: List[str]) -> tuple[str, str | None]: @@ -126,12 +137,36 @@ def exec(self, command: List[str]) -> tuple[str, str | None]: stop=stop_after_attempt(3), wait=wait_fixed(1), retry=retry_if_result(lambda healthy: not healthy), + retry_error_callback=lambda _: False, ) def alive(self) -> bool: - """Check if the Valkey service is running.""" try: return bool(self.valkey.services[SNAP_SERVICE]["active"]) and bool( self.valkey.services[SNAP_SENTINEL_SERVICE]["active"] ) except KeyError: return False + + @retry( + stop=stop_after_attempt(3), + wait=wait_fixed(1), + retry=retry_if_result(lambda healthy: not healthy), + retry_error_callback=lambda _: False, + ) + def wait_for_services_to_be_alive(self, duration: float = 30, delay: float = 0.1) -> bool: + """Poll until the Valkey services are alive for at least `duration` seconds. + + Args: + duration (float): The maximum duration to poll for the services to be alive. Default is 30 seconds. + delay (float): The delay between each poll attempt in seconds. Default is 0.1 seconds. + + Returns: + bool: True if the services are alive within the poll duration, False otherwise. + """ + deadline = time.time() + duration + while time.time() < deadline: + if not self.alive(): + return False + + time.sleep(delay) + return True From d4aa771932f5611a560ece7d32e32f30aaec1e45 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Feb 2026 07:26:24 +0000 Subject: [PATCH 090/282] remove unnecessary state and fix unit tests --- src/literals.py | 1 - src/managers/cluster.py | 4 --- tests/unit/test_charm.py | 62 ++++++++++++++++++++++++++-------------- 3 files changed, 40 insertions(+), 27 deletions(-) diff --git a/src/literals.py b/src/literals.py index 665b182..b2ea675 100644 --- a/src/literals.py +++ b/src/literals.py @@ -76,7 +76,6 @@ class StartState(StrEnum): NOT_STARTED = "not_started" WAITING_TO_START = "waiting_to_start" - WAITING_FOR_PRIMARY_START = "waiting_for_primary_start" CONFIGURATION_ERROR = "configuration_error" STARTING_WAITING_VALKEY = "starting_waiting_valkey" STARTING_WAITING_SENTINEL = "starting_waiting_sentinel" diff --git a/src/managers/cluster.py b/src/managers/cluster.py index b8c7817..ab6bbfd 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -130,10 +130,6 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje status_list.append( StartStatuses.WAITING_TO_START.value, ) - case StartState.WAITING_FOR_PRIMARY_START.value: - status_list.append( - StartStatuses.WAITING_FOR_PRIMARY_START.value, - ) case StartState.CONFIGURATION_ERROR.value: status_list.append( StartStatuses.CONFIGURATION_ERROR.value, diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 4816d92..ef81314 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -9,7 +9,7 @@ import yaml from ops import ActiveStatus, pebble, testing -from common.exceptions import ValkeyWorkloadCommandError +from common.exceptions import ValkeyServiceNotAliveError, ValkeyWorkloadCommandError from src.charm import ValkeyCharm from src.literals import ( INTERNAL_USERS_PASSWORD_CONFIG, @@ -19,7 +19,7 @@ CharmUsers, StartState, ) -from src.statuses import CharmStatuses, ClusterStatuses, ValkeyServiceStatuses +from src.statuses import CharmStatuses, ClusterStatuses, StartStatuses from .helpers import status_is @@ -86,25 +86,25 @@ def test_start_leader_unit(cloud_spec): state_in = ctx.run(ctx.on.leader_elected(), state_in) # start event - with patch("common.client.ValkeyClient.ping", return_value=False): - state_out = ctx.run(ctx.on.start(), state_in) - assert state_out.get_container(container.name).plan == expected_plan - assert ( - state_out.get_container(container.name).service_statuses[SERVICE_VALKEY] - == pebble.ServiceStatus.ACTIVE - ) - assert ( - state_out.get_container(container.name).service_statuses[SERVICE_METRIC_EXPORTER] - == pebble.ServiceStatus.ACTIVE - ) - assert status_is(state_out, ValkeyServiceStatuses.SERVICE_STARTING.value) + state_out = ctx.run(ctx.on.start(), state_in) + assert state_out.get_container(container.name).plan == expected_plan + assert ( + state_out.get_container(container.name).service_statuses[SERVICE_VALKEY] + == pebble.ServiceStatus.ACTIVE + ) + assert ( + state_out.get_container(container.name).service_statuses[SERVICE_METRIC_EXPORTER] + == pebble.ServiceStatus.ACTIVE + ) + assert status_is(state_out, StartStatuses.SERVICE_STARTING.value) + with ( patch("common.client.ValkeyClient.ping", return_value=True), patch("common.client.ValkeyClient.get_persistence_info", return_value={"loading": "0"}), patch("common.client.ValkeyClient.set_value", return_value=True), ): state_out = ctx.run(ctx.on.start(), state_out) - assert status_is(state_out, ClusterStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value) + assert status_is(state_out, StartStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value) with ( patch("common.client.ValkeyClient.ping", return_value=True), @@ -116,6 +116,24 @@ def test_start_leader_unit(cloud_spec): assert state_out.unit_status == ActiveStatus() assert state_out.app_status == ActiveStatus() + with ( + patch( + "managers.config.ConfigManager.set_config_properties", + side_effect=ValkeyWorkloadCommandError, + ), + ): + state_out = ctx.run(ctx.on.start(), state_in) + assert status_is(state_out, StartStatuses.CONFIGURATION_ERROR.value) + + with ( + patch( + "workload_k8s.ValkeyK8sWorkload.start", + side_effect=ValkeyServiceNotAliveError, + ), + ): + state_out = ctx.run(ctx.on.start(), state_in) + assert status_is(state_out, StartStatuses.ERROR_ON_START.value) + # container not ready container = testing.Container(name=CONTAINER, can_connect=False) state_in = testing.State( @@ -126,8 +144,8 @@ def test_start_leader_unit(cloud_spec): ) state_out = ctx.run(ctx.on.start(), state_in) - assert status_is(state_out, CharmStatuses.SERVICE_NOT_STARTED.value) - assert status_is(state_out, CharmStatuses.SERVICE_NOT_STARTED.value, is_app=True) + assert status_is(state_out, StartStatuses.SERVICE_NOT_STARTED.value) + assert status_is(state_out, StartStatuses.SERVICE_NOT_STARTED.value, is_app=True) def test_start_non_leader_unit(cloud_spec): @@ -161,7 +179,7 @@ def test_start_non_leader_unit(cloud_spec): ) state_out = ctx.run(ctx.on.start(), state_in) - assert status_is(state_out, ClusterStatuses.WAITING_FOR_PRIMARY_START.value) + assert status_is(state_out, StartStatuses.WAITING_TO_START.value) relation = testing.PeerRelation( id=1, @@ -178,7 +196,7 @@ def test_start_non_leader_unit(cloud_spec): ) state_out = ctx.run(ctx.on.start(), state_in) - assert status_is(state_out, CharmStatuses.WAITING_TO_START.value) + assert status_is(state_out, StartStatuses.WAITING_TO_START.value) # health check with patch("common.client.ValkeyClient.is_replica_synced", return_value=False): @@ -196,7 +214,7 @@ def test_start_non_leader_unit(cloud_spec): containers={container}, ) state_out = ctx.run(ctx.on.start(), state_in) - assert status_is(state_out, ValkeyServiceStatuses.SERVICE_STARTING.value) + assert status_is(state_out, StartStatuses.SERVICE_STARTING.value) # replica syncing with ( @@ -218,7 +236,7 @@ def test_start_non_leader_unit(cloud_spec): containers={container}, ) state_out = ctx.run(ctx.on.start(), state_in) - assert status_is(state_out, ClusterStatuses.WAITING_FOR_REPLICA_SYNC.value) + assert status_is(state_out, StartStatuses.WAITING_FOR_REPLICA_SYNC.value) # sentinel not yet discovered with ( @@ -240,7 +258,7 @@ def test_start_non_leader_unit(cloud_spec): containers={container}, ) state_out = ctx.run(ctx.on.start(), state_in) - assert status_is(state_out, ClusterStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value) + assert status_is(state_out, StartStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value) # Happy path with sentinel discovered and replica synced with ( From 3beea80d648665c0d9a274e34a9296d77183d656 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Feb 2026 09:22:59 +0000 Subject: [PATCH 091/282] only leader starts priomary if num of units is 0 --- src/events/base_events.py | 17 ++++++++++++++++- src/literals.py | 1 + src/managers/cluster.py | 4 ++++ 3 files changed, 21 insertions(+), 1 deletion(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 7f06c7d..e033fe6 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -119,7 +119,19 @@ def _on_start(self, event: ops.StartEvent) -> None: event.defer() return - primary_ip = self.charm.sentinel_manager.get_primary_ip() or self.charm.state.bind_address + primary_ip = self.charm.sentinel_manager.get_primary_ip() + if not primary_ip: + if self.charm.state.number_units_started == 0 and self.charm.unit.is_leader(): + primary_ip = self.charm.state.bind_address + else: + logger.debug( + "Primary IP not available yet or other units have already started, deferring start event until leader starts the primary" + ) + self.charm.state.unit_server.update( + {"start_state": StartState.WAITING_FOR_PRIMARY_START.value} + ) + event.defer() + return try: self._configure_services(primary_ip) @@ -244,6 +256,9 @@ def _process_lock_requests(self) -> None: self.charm.state.cluster.update( {"starting_member": units_requesting_start[0] if units_requesting_start else ""} ) + logger.debug( + f"Updated starting member to {units_requesting_start[0] if units_requesting_start else ''}" + ) def _on_update_status(self, event: ops.UpdateStatusEvent) -> None: """Handle the update-status event.""" diff --git a/src/literals.py b/src/literals.py index b2ea675..665b182 100644 --- a/src/literals.py +++ b/src/literals.py @@ -76,6 +76,7 @@ class StartState(StrEnum): NOT_STARTED = "not_started" WAITING_TO_START = "waiting_to_start" + WAITING_FOR_PRIMARY_START = "waiting_for_primary_start" CONFIGURATION_ERROR = "configuration_error" STARTING_WAITING_VALKEY = "starting_waiting_valkey" STARTING_WAITING_SENTINEL = "starting_waiting_sentinel" diff --git a/src/managers/cluster.py b/src/managers/cluster.py index ab6bbfd..e1b13cb 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -126,6 +126,10 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje status_list.append( StartStatuses.SERVICE_NOT_STARTED.value, ) + case StartState.WAITING_FOR_PRIMARY_START.value: + status_list.append( + StartStatuses.WAITING_FOR_PRIMARY_START.value, + ) case StartState.WAITING_TO_START.value: status_list.append( StartStatuses.WAITING_TO_START.value, From eeddaadab188ea20448bb6795c69e5c031acd978 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Feb 2026 11:47:27 +0000 Subject: [PATCH 092/282] clean the cases where primary ip is None and set a blocked status if there are started flags but no primary ip --- src/events/base_events.py | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index e033fe6..8dd5ed7 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -119,16 +119,18 @@ def _on_start(self, event: ops.StartEvent) -> None: event.defer() return - primary_ip = self.charm.sentinel_manager.get_primary_ip() - if not primary_ip: - if self.charm.state.number_units_started == 0 and self.charm.unit.is_leader(): + if (primary_ip := self.charm.sentinel_manager.get_primary_ip()) is None: + if self.charm.state.number_units_started == 0: + logger.debug( + "No primary discovered, but this is the first unit starting, proceeding with start." + ) primary_ip = self.charm.state.bind_address else: - logger.debug( - "Primary IP not available yet or other units have already started, deferring start event until leader starts the primary" + logger.error( + "Cannot get primary IP address from sentinel but there are already units started." ) self.charm.state.unit_server.update( - {"start_state": StartState.WAITING_FOR_PRIMARY_START.value} + {"start_state": StartState.ERROR_ON_START.value} ) event.defer() return From f2e80b06104de0a1ac1ff591f27653105f7bd264 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Feb 2026 11:55:34 +0000 Subject: [PATCH 093/282] extend unit test coverage and rename unit tests to reflect business logic --- tests/unit/test_charm.py | 29 +++++++++++++++++++++++++++-- 1 file changed, 27 insertions(+), 2 deletions(-) diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index ef81314..0a781d3 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -39,7 +39,7 @@ ) -def test_start_leader_unit(cloud_spec): +def test_start_primary(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) status_peer_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) @@ -148,7 +148,32 @@ def test_start_leader_unit(cloud_spec): assert status_is(state_out, StartStatuses.SERVICE_NOT_STARTED.value, is_app=True) -def test_start_non_leader_unit(cloud_spec): +def test_start_primary_started_flag_set(cloud_spec): + + ctx = testing.Context(ValkeyCharm, app_trusted=True) + # no primary but started flag set + relation = testing.PeerRelation( + id=1, endpoint=PEER_RELATION, peers_data={1: {"start-state": "started"}} + ) + status_peer_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) + + # happy path + container = testing.Container(name=CONTAINER, can_connect=True) + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + leader=True, + relations={relation, status_peer_relation}, + containers={container}, + ) + + # generate passwords + state_out = ctx.run(ctx.on.leader_elected(), state_in) + # start event + state_out = ctx.run(ctx.on.start(), state_out) + assert status_is(state_out, StartStatuses.ERROR_ON_START.value) + + +def test_start_non_primary(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) status_peer_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) From 68b89a4b13a15e65009f8a77b376b2e2da10639c Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Feb 2026 15:10:40 +0000 Subject: [PATCH 094/282] leader has to start primary because non leaders might not see all units in peer relation --- src/events/base_events.py | 14 ++++++-------- tests/unit/test_charm.py | 25 ------------------------- 2 files changed, 6 insertions(+), 33 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 8dd5ed7..e033fe6 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -119,18 +119,16 @@ def _on_start(self, event: ops.StartEvent) -> None: event.defer() return - if (primary_ip := self.charm.sentinel_manager.get_primary_ip()) is None: - if self.charm.state.number_units_started == 0: - logger.debug( - "No primary discovered, but this is the first unit starting, proceeding with start." - ) + primary_ip = self.charm.sentinel_manager.get_primary_ip() + if not primary_ip: + if self.charm.state.number_units_started == 0 and self.charm.unit.is_leader(): primary_ip = self.charm.state.bind_address else: - logger.error( - "Cannot get primary IP address from sentinel but there are already units started." + logger.debug( + "Primary IP not available yet or other units have already started, deferring start event until leader starts the primary" ) self.charm.state.unit_server.update( - {"start_state": StartState.ERROR_ON_START.value} + {"start_state": StartState.WAITING_FOR_PRIMARY_START.value} ) event.defer() return diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 0a781d3..35b4275 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -148,31 +148,6 @@ def test_start_primary(cloud_spec): assert status_is(state_out, StartStatuses.SERVICE_NOT_STARTED.value, is_app=True) -def test_start_primary_started_flag_set(cloud_spec): - - ctx = testing.Context(ValkeyCharm, app_trusted=True) - # no primary but started flag set - relation = testing.PeerRelation( - id=1, endpoint=PEER_RELATION, peers_data={1: {"start-state": "started"}} - ) - status_peer_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) - - # happy path - container = testing.Container(name=CONTAINER, can_connect=True) - state_in = testing.State( - model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), - leader=True, - relations={relation, status_peer_relation}, - containers={container}, - ) - - # generate passwords - state_out = ctx.run(ctx.on.leader_elected(), state_in) - # start event - state_out = ctx.run(ctx.on.start(), state_out) - assert status_is(state_out, StartStatuses.ERROR_ON_START.value) - - def test_start_non_primary(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) From 250e39bd1d684a3cf86ff53b37e0c3ee734bb95a Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Feb 2026 03:29:11 +0000 Subject: [PATCH 095/282] add running status for better UX --- src/events/base_events.py | 9 ++++++--- src/managers/cluster.py | 4 +--- src/statuses.py | 3 ++- 3 files changed, 9 insertions(+), 7 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index e033fe6..9d94aa6 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -27,7 +27,7 @@ StartState, Substrate, ) -from statuses import CharmStatuses, ClusterStatuses +from statuses import CharmStatuses, ClusterStatuses, StartStatuses if TYPE_CHECKING: from charm import ValkeyCharm @@ -150,8 +150,11 @@ def _on_start(self, event: ops.StartEvent) -> None: event.defer() return - self.charm.state.unit_server.update( - {"start_state": StartState.STARTING_WAITING_VALKEY.value} + self.charm.status.set_running_status( + StartStatuses.SERVICE_STARTING.value, + scope="unit", + statuses_state=self.charm.state.statuses, + component_name=self.charm.cluster_manager.name, ) self.unit_fully_started.emit(is_primary=primary_ip == self.charm.state.bind_address) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index e1b13cb..5076ff0 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -113,9 +113,7 @@ def is_healthy(self, is_primary: bool = False, check_replica_sync: bool = True) def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the cluster manager's statuses.""" - status_list: list[StatusObject] = self.state.statuses.get( - scope=scope, component=self.name, running_status_only=True, running_status_type="async" - ).root + status_list: list[StatusObject] = [] # Peer relation not established yet, or model not built yet for unit or app if not self.state.cluster.model or not self.state.unit_server.model: diff --git a/src/statuses.py b/src/statuses.py index 213054e..f0a677b 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -53,6 +53,7 @@ class StartStatuses(Enum): SERVICE_STARTING = StatusObject( status="maintenance", message="Waiting for Valkey to start...", + running="async", ) WAITING_FOR_SENTINEL_DISCOVERY = StatusObject( status="maintenance", @@ -66,7 +67,7 @@ class StartStatuses(Enum): WAITING_FOR_PRIMARY_START = StatusObject( status="maintenance", - message="Waiting for the primary unit to start...", + message="Waiting to discover the primary unit...", ) ERROR_ON_START = StatusObject( status="blocked", From 147240f1e09b22e6e5929e263742941be52aa220 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Feb 2026 10:55:11 +0000 Subject: [PATCH 096/282] move to glide and wrap client requests in helpers --- poetry.lock | 120 ++++++++- pyproject.toml | 4 +- tests/integration/continuous_writes.py | 294 ++++++++++++++--------- tests/integration/cw_helpers.py | 58 ++--- tests/integration/helpers.py | 245 +++++++++++++------ tests/integration/k8s/ha/test_scaling.py | 39 ++- tests/integration/k8s/test_charm.py | 152 +++++++----- tests/integration/vm/ha/test_scaling.py | 52 ++-- tests/integration/vm/test_charm.py | 152 +++++++----- 9 files changed, 697 insertions(+), 419 deletions(-) diff --git a/poetry.lock b/poetry.lock index d1bf741..7960d81 100644 --- a/poetry.lock +++ b/poetry.lock @@ -60,6 +60,25 @@ files = [ {file = "annotated_types-0.7.0.tar.gz", hash = "sha256:aff07c09a53a08bc8cfccb9c85b05f1aa9a2a6f23728d790723543408344ce89"}, ] +[[package]] +name = "anyio" +version = "4.12.1" +description = "High-level concurrency and networking framework on top of asyncio or Trio" +optional = false +python-versions = ">=3.9" +groups = ["integration"] +files = [ + {file = "anyio-4.12.1-py3-none-any.whl", hash = "sha256:d405828884fc140aa80a3c667b8beed277f1dfedec42ba031bd6ac3db606ab6c"}, + {file = "anyio-4.12.1.tar.gz", hash = "sha256:41cfcc3a4c85d3f05c932da7c26d0201ac36f72abd4435ba90d0464a3ffed703"}, +] + +[package.dependencies] +idna = ">=2.8" +typing_extensions = {version = ">=4.5", markers = "python_version < 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+content-hash = "032d9f2c93fef6791d3a007057822223681c365d153fb1cd2573b2fa34bfd2f7" diff --git a/pyproject.toml b/pyproject.toml index f5441fe..ee849b6 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -12,8 +12,6 @@ charmlibs-pathops = "^1.2.0" charmlibs-snap = "^1.0.1" tenacity = "*" data-platform-helpers = ">=0.1.7" -# TODO replace with official release once build from source is possible -# https://github.com/valkey-io/valkey-glide/pull/5202 [tool.poetry.requires-plugins] poetry-plugin-export = ">=1.8" @@ -52,8 +50,8 @@ allure-pytest-default-results = "^0.1.2" data-platform-helpers = ">=0.1.7" jubilant = "^1.6.0" python-dateutil = "*" -valkey = "^6.1.1" tenacity = "^9.1.2" +valkey-glide = "^2.2.7" [tool.coverage.run] branch = true diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index ea1ae44..d0ea9fb 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -2,22 +2,21 @@ # Copyright 2026 Canonical Ltd. # See LICENSE file for licensing details. +import asyncio import logging -import os -import time -from contextlib import contextmanager -from multiprocessing import Event, Process, Queue, log_to_stderr +import multiprocessing +import queue +from contextlib import asynccontextmanager +from multiprocessing import log_to_stderr +from pathlib import Path from types import SimpleNamespace -from typing import Generator +from typing import Optional import jubilant -import valkey +from glide import GlideClient, GlideClientConfiguration, NodeAddress, ServerCredentials from tenacity import ( - RetryError, - Retrying, retry, stop_after_attempt, - stop_after_delay, wait_fixed, wait_random, ) @@ -33,19 +32,14 @@ class WriteFailedError(Exception): class ContinuousWrites: - """Utility class for managing continuous writes to Valkey.""" + """Utility class for managing continuous async writes to Valkey using GLIDE.""" KEY = "cw_key" LAST_WRITTEN_VAL_PATH = "last_written_value" - SENTINEL_PORT = 26379 + VALKEY_PORT = 6379 def __init__( - self, - juju: jubilant.Juju, - app: str, - initial_count: int = 0, - log_written_values: bool = False, - in_between_sleep: float = 1, + self, juju: jubilant.Juju, app: str, initial_count: int = 0, in_between_sleep: float = 1.0 ): self._juju = juju self._app = app @@ -54,60 +48,56 @@ def __init__( self._queue = None self._process = None self._initial_count = initial_count - self._log_written_values = log_written_values self._in_between_sleep = in_between_sleep + self._mp_ctx = multiprocessing.get_context("spawn") def _get_config(self) -> SimpleNamespace: """Fetch current cluster configuration from Juju.""" return SimpleNamespace( endpoints=",".join(get_cluster_hostnames(self._juju, app_name=self._app)), valkey_password=get_password(self._juju, user=CharmUsers.VALKEY_ADMIN), - sentinel_password=get_password(self._juju, user=CharmUsers.SENTINEL_CHARM_ADMIN), ) - @contextmanager - def _get_client(self) -> Generator[valkey.Valkey, None, None]: - """Context manager to provide a master client and ensure cleanup.""" - conf = self._get_config() - sentinel = valkey.Sentinel( - [(host, self.SENTINEL_PORT) for host in conf.endpoints.split(",")], - username=CharmUsers.VALKEY_ADMIN.value, - password=conf.valkey_password, - sentinel_kwargs={ - "password": conf.sentinel_password, - "username": CharmUsers.SENTINEL_CHARM_ADMIN.value, - }, + async def _create_glide_client(self, config: Optional[SimpleNamespace] = None) -> GlideClient: + """Asynchronously create and return a configured GlideClient.""" + conf = config or self._get_config() + addresses = [NodeAddress(host, self.VALKEY_PORT) for host in conf.endpoints.split(",")] + + credentials = ServerCredentials( + username=CharmUsers.VALKEY_ADMIN.value, password=conf.valkey_password ) - master = sentinel.master_for("primary") - try: - yield master - finally: - # Valkey clients use connection pools, but we ensure logical separation - master.close() + + glide_config = GlideClientConfiguration( + addresses=addresses, + client_name="continuous_writes_client", + request_timeout=5000, + credentials=credentials, + ) + + return await GlideClient.create(glide_config) @retry(wait=wait_fixed(5) + wait_random(0, 5), stop=stop_after_attempt(5)) def start(self) -> None: """Run continuous writes in the background.""" if not self._is_stopped: - self.stop() + self.clear() self._is_stopped = False - self._event = Event() - self._queue = Queue() + # Create primitives using the spawn context + self._event = self._mp_ctx.Event() + self._queue = self._mp_ctx.Queue() + + last_written_file = Path(self.LAST_WRITTEN_VAL_PATH) + if not last_written_file.exists(): + last_written_file.write_text(str(self._initial_count)) - self._process = Process( - target=self._run_wrapper, + self._process = self._mp_ctx.Process( + target=self._run_process, name="continuous_writes", - args=( - self._event, - self._queue, - self._initial_count, - self._log_written_values, - self._in_between_sleep, - ), + args=(self._event, self._queue, self._initial_count, self._in_between_sleep), ) - self.update() # Load initial config into queue + self.update() self._process.start() def update(self) -> None: @@ -122,24 +112,56 @@ def clear(self) -> SimpleNamespace | None: if not self._is_stopped: result = self.stop() - with self._get_client() as client: - client.delete(self.KEY) + asyncio.run(self._async_delete()) - if os.path.exists(self.LAST_WRITTEN_VAL_PATH): - os.remove(self.LAST_WRITTEN_VAL_PATH) + last_written_file = Path(self.LAST_WRITTEN_VAL_PATH) + if last_written_file.exists(): + last_written_file.unlink() + return result + + @retry(wait=wait_fixed(5) + wait_random(0, 5), stop=stop_after_attempt(5)) + async def async_clear(self) -> SimpleNamespace | None: + """Stop writes and delete the tracking key/file.""" + result = None + if not self._is_stopped: + result = await self.async_stop() + await self._async_delete() + + last_written_file = Path(self.LAST_WRITTEN_VAL_PATH) + if last_written_file.exists(): + last_written_file.unlink() return result + async def _async_delete(self) -> None: + client = await self._create_glide_client() + try: + await client.delete([self.KEY]) + finally: + await client.close() + def count(self) -> int: """Return number of items in the list.""" - with self._get_client() as client: - return client.llen(self.KEY) + return asyncio.run(self._async_count()) + + async def _async_count(self) -> int: + client = await self._create_glide_client() + try: + return await client.llen(self.KEY) + finally: + await client.close() def max_stored_id(self) -> int: """Return the most recently inserted ID (top of list).""" - with self._get_client() as client: - val = client.lindex(self.KEY, 0) - return int(val) if val else 0 + return asyncio.run(self._async_max_stored_id()) + + async def _async_max_stored_id(self) -> int: + client = await self._create_glide_client() + try: + val = await client.lindex(self.KEY, 0) + return int(val.decode()) if val else 0 + finally: + await client.close() @retry(wait=wait_fixed(5) + wait_random(0, 5), stop=stop_after_attempt(5)) def stop(self) -> SimpleNamespace: @@ -153,91 +175,125 @@ def stop(self) -> SimpleNamespace: result = SimpleNamespace() result.max_stored_id = self.max_stored_id() result.count = self.count() + result.last_expected_id = int(Path(self.LAST_WRITTEN_VAL_PATH).read_text().strip()) - # Retrieve the last ID the worker attempted to write - try: - for attempt in Retrying(stop=stop_after_delay(10), wait=wait_fixed(2)): - with attempt: - with open(self.LAST_WRITTEN_VAL_PATH, "r") as f: - result.last_expected_id = int(f.read().strip()) - except (RetryError, FileNotFoundError, ValueError): - result.last_expected_id = -1 + return result + + @retry(wait=wait_fixed(5) + wait_random(0, 5), stop=stop_after_attempt(5)) + async def async_stop(self) -> SimpleNamespace: + """Stop the background process and return summary statistics.""" + if not self._is_stopped and self._process: + self._event.set() + self._process.join(timeout=30) + self._process.terminate() + self._is_stopped = True + + result = SimpleNamespace() + result.max_stored_id = await self._async_max_stored_id() + result.count = await self._async_count() + result.last_expected_id = int(Path(self.LAST_WRITTEN_VAL_PATH).read_text().strip()) return result @staticmethod - def _run_wrapper( - event: Event, - data_queue: Queue, - starting_number: int, - log_written_values: bool = False, - in_between_sleep: float = 1, - ) -> None: - """Entry point for the Process; simplified without unnecessary asyncio.""" + def _run_process(event, data_queue, starting_number: int, in_between_sleep: float): + """Start synchronously the asyncio event loop.""" proc_logger = log_to_stderr() proc_logger.setLevel(logging.INFO) - def _make_client(conf): - s = valkey.Sentinel( - [(h, ContinuousWrites.SENTINEL_PORT) for h in conf.endpoints.split(",")], + # FIX 2: Do the blocking read synchronously BEFORE starting the async loop + initial_config = data_queue.get(block=True) + + asyncio.run( + ContinuousWrites._async_run( + event, data_queue, starting_number, initial_config, in_between_sleep, proc_logger + ) + ) + + @staticmethod + async def _async_run( + event, + data_queue, + starting_number: int, + initial_config: SimpleNamespace, + in_between_sleep: float, + proc_logger: logging.Logger, + ): + """Async loop for writing data continuously.""" + + async def _make_client(conf: SimpleNamespace) -> GlideClient: + addresses = [ + NodeAddress(host, ContinuousWrites.VALKEY_PORT) + for host in conf.endpoints.split(",") + ] + credentials = ServerCredentials( username=CharmUsers.VALKEY_ADMIN.value, password=conf.valkey_password, - sentinel_kwargs={ - "password": conf.sentinel_password, - "username": CharmUsers.SENTINEL_CHARM_ADMIN.value, - }, ) - return s.master_for("primary") + glide_config = GlideClientConfiguration( + addresses=addresses, + client_name="continuous_writes_worker", + request_timeout=5000, + credentials=credentials, + ) + return await GlideClient.create(glide_config) + + @asynccontextmanager + async def with_client(conf: SimpleNamespace): + client = await _make_client(conf) + try: + yield client + finally: + await client.close() current_val = starting_number - config = data_queue.get(block=True) - client = _make_client(config) + config = initial_config + # client = await _make_client(config) - proc_logger.info(f"Starting continuous writes from {current_val}") + proc_logger.info(f"Starting continuous async writes from {current_val}") try: while not event.is_set(): - # Check for config updates (e.g. cluster scaling) - if not data_queue.empty(): - config = data_queue.get(block=False) - client = _make_client(config) + try: + config = data_queue.get_nowait() + # await client.close() + # client = await _make_client(config) + proc_logger.info("Configuration updated, client reconnected.") + except queue.Empty: + pass try: - # note LPUSH returns the length of the list after the push - if client.lpush(ContinuousWrites.KEY, current_val): - if log_written_values: - proc_logger.info(f"Wrote value: {current_val}") - current_val += 1 - # Throttle to avoid flooding small test runners - time.sleep(in_between_sleep) - else: - raise WriteFailedError("LPUSH returned 0/None") + proc_logger.info(f"Writing value: {current_val}") + async with with_client(config) as client: + if not ( + res := await asyncio.wait_for( + client.lpush(ContinuousWrites.KEY, [str(current_val)]), timeout=5 + ) + ): + raise WriteFailedError("LPUSH returned 0/None") + proc_logger.info(f"Length after write: {res}") + await asyncio.sleep(in_between_sleep) except Exception as e: proc_logger.warning(f"Write failed at {current_val}: {e}") - time.sleep(2) - continue + finally: + if event.is_set(): + break + + current_val += 1 + finally: - # Persistent where we stopped - with open(ContinuousWrites.LAST_WRITTEN_VAL_PATH, "w") as f: - f.write(str(current_val - 1)) - os.fsync(f) + Path(ContinuousWrites.LAST_WRITTEN_VAL_PATH).write_text(str(current_val)) + proc_logger.info("Continuous writes process exiting.") if __name__ == "__main__": - # Example usage + import jubilant + juju_env = jubilant.Juju(model="testing") - cw = ContinuousWrites( - juju=juju_env, - app="valkey", - initial_count=100, - log_written_values=True, - in_between_sleep=1, - ) + cw = ContinuousWrites(juju=juju_env, app="valkey", in_between_sleep=0.5) cw.clear() cw.start() - # continue until manually stopped by ctrl+c or by calling cw.stop() from another process - try: - while True: - time.sleep(1) - except KeyboardInterrupt: - print(f"Stats: {cw.clear()}") + print("Continuous writes started. Press Enter to stop...") + input() + stats = cw.clear() + print(f"Stopped. Stats: {stats}") diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index 1b068d4..022c0b1 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -2,15 +2,13 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. +import asyncio import logging import subprocess -import time +from pathlib import Path -import valkey -from tenacity import Retrying, stop_after_attempt, wait_fixed - -from literals import CLIENT_PORT, SENTINEL_PORT from tests.integration.continuous_writes import ContinuousWrites +from tests.integration.helpers import create_valkey_client, exec_valkey_cli logger = logging.getLogger(__name__) @@ -48,53 +46,39 @@ def stop_continuous_writes() -> None: proc.communicate() -def assert_continuous_writes_increasing( - endpoints: str, - valkey_user: str, - valkey_password: str, - sentinel_user: str, - sentinel_password: str, +async def assert_continuous_writes_increasing( + hostnames: list[str], + username: str, + password: str, ) -> None: """Assert that the continuous writes are increasing.""" - client = valkey.Sentinel( - [(host, SENTINEL_PORT) for host in endpoints.split(",")], - username=valkey_user, - password=valkey_password, - sentinel_kwargs={"password": sentinel_password, "username": sentinel_user}, + client = await create_valkey_client( + hostnames, + username=username, + password=password, ) - master = client.master_for("primary") - writes_count = int(master.llen(KEY)) - time.sleep(10) - more_writes = int(master.llen(KEY)) + writes_count = await client.llen(KEY) + await asyncio.sleep(10) + more_writes = await client.llen(KEY) assert more_writes > writes_count, "Writes not continuing to DB" logger.info("Continuous writes are increasing.") def assert_continuous_writes_consistent( - endpoints: str, - valkey_user: str, - valkey_password: str, + hostnames: list[str], + username: str, + password: str, ) -> None: """Assert that the continuous writes are consistent.""" last_written_value = None - for attempt in Retrying(stop=stop_after_attempt(5), wait=wait_fixed(5)): - with attempt: - with open(WRITES_LAST_WRITTEN_VAL_PATH, "r") as f: - last_written_value = int(f.read().rstrip()) + last_written_value = int(Path(WRITES_LAST_WRITTEN_VAL_PATH).read_text()) if not last_written_value: raise ValueError("Could not read last written value from file.") - for endpoint in endpoints.split(","): - client = valkey.Valkey( - host=endpoint, - port=CLIENT_PORT, - username=valkey_user, - password=valkey_password, - decode_responses=True, - ) - last_value = int(client.lrange(KEY, 0, 0)[0]) - count = int(client.llen(KEY)) + for endpoint in hostnames: + last_value = int(exec_valkey_cli(endpoint, username, password, f"LRANGE {KEY} 0 0")[0]) + count = int(exec_valkey_cli(endpoint, username, password, f"LLEN {KEY}")[0]) assert last_written_value == last_value, ( f"endpoint: {endpoint}, expected value: {last_written_value}, current value: {last_value}" ) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 81e9b8e..332b815 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -5,16 +5,24 @@ import contextlib import logging import os +import re +import subprocess import time from datetime import datetime, timedelta from pathlib import Path from typing import List import jubilant -import valkey import yaml from data_platform_helpers.advanced_statuses.models import StatusObject from dateutil.parser import parse +from glide import ( + GlideClient, + GlideClientConfiguration, + InfoSection, + NodeAddress, + ServerCredentials, +) from ops import SecretNotFoundError, StatusBase from literals import ( @@ -237,61 +245,34 @@ def get_secret_by_label(juju: jubilant.Juju, label: str) -> dict[str, str]: raise SecretNotFoundError(f"Secret with label {label} not found") -def create_valkey_client( - hostname: str, +async def create_valkey_client( + hostnames: list[str], username: str | None = CharmUsers.VALKEY_ADMIN.value, password: str | None = None, -) -> valkey.Valkey: +): """Create and return a Valkey client connected to the cluster. Args: - hostname: The hostname of the Valkey cluster node. + hostnames: List of hostnames of the Valkey cluster nodes. username: The username for authentication. password: The password for the internal user. + tls_enabled: Whether TLS certificates are needed. Returns: A Valkey client instance connected to the cluster. """ - client = valkey.Valkey( - host=hostname, - port=CLIENT_PORT, - username=username, - password=password, - decode_responses=True, - ) - return client + addresses = [NodeAddress(host=host, port=CLIENT_PORT) for host in hostnames] + credentials = None + if username or password: + credentials = ServerCredentials(username=username, password=password) -def create_sentinel_client( - hostnames: list[str], - valkey_user: str | None = CharmUsers.VALKEY_ADMIN.value, - valkey_password: str | None = None, - sentinel_user: str | None = CharmUsers.SENTINEL_ADMIN.value, - sentinel_password: str | None = None, -) -> valkey.Sentinel: - """Create and return a Valkey Sentinel client connected to the cluster. - - Args: - hostnames: A list of hostnames for the Sentinel nodes. - valkey_user: The username for authentication to Valkey. - valkey_password: The password for the internal user for Valkey authentication. - sentinel_user: The username for authentication to Sentinel. - sentinel_password: The password for the internal user for Sentinel authentication. - - Returns: - A Valkey Sentinel client instance connected to the cluster. - """ - sentinel_client = valkey.Sentinel( - [(host, 26379) for host in hostnames], - username=valkey_user, - password=valkey_password, - sentinel_kwargs={ - "password": sentinel_password, - "username": sentinel_user, - }, - decode_responses=True, + client_config = GlideClientConfiguration( + addresses, + credentials=credentials, ) - return sentinel_client + + return await GlideClient.create(client_config) def set_password( @@ -336,21 +317,19 @@ def fast_forward(juju: jubilant.Juju): juju.model_config({"update-status-hook-interval": old}) -def get_primary_ip(juju: jubilant.Juju, app: str) -> str: +async def get_primary_ip(juju: jubilant.Juju, app: str) -> str: """Get the primary node of the Valkey cluster. Returns: The IP address of the primary node. """ hostnames = get_cluster_hostnames(juju, app) - client = create_sentinel_client( - hostnames=hostnames, - valkey_user=CharmUsers.VALKEY_ADMIN.value, - valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - sentinel_user=CharmUsers.SENTINEL_CHARM_ADMIN.value, - sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_CHARM_ADMIN), - ) - return client.discover_master("primary")[0] + client = await create_valkey_client([hostnames[0]], password=get_password(juju)) + info = await client.custom_command(["client", "info"]) + match = re.search(r"laddr=([\d\.]+):", info.decode()) + if match: + return match.group(1) + raise RuntimeError("Primary IP not found in client info output") def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN) -> str: @@ -367,15 +346,10 @@ def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN return secret.get(f"{user.value}-password", "") -def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: +async def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: # Connect to Valkey - primary_ip = get_primary_ip(juju, APP_NAME) - client = valkey.Valkey( - host=primary_ip, - port=CLIENT_PORT, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - ) + hostnames = get_cluster_hostnames(juju, APP_NAME) + client = await create_valkey_client(hostnames, password=get_password(juju)) # Configuration value_size_bytes = 1024 # 1KB per value @@ -395,17 +369,11 @@ def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: try: while keys_added < total_keys: - pipe = client.pipeline(transaction=False) - - # Fill the batch - for i in range(batch_size): - key_idx = keys_added + i - pipe.set(f"{SEED_KEY_PREFIX}{key_idx}", random_data) + data = {f"{SEED_KEY_PREFIX}{key_idx}": random_data for key_idx in range(batch_size)} - if keys_added + i >= total_keys: - break + if await client.mset(data) != "OK": + raise RuntimeError("Failed to set data in Valkey cluster") - pipe.execute() keys_added += batch_size # Progress reporting @@ -420,3 +388,144 @@ def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: finally: total_time = time.time() - start_time logger.info(f"\nSeeding complete! Added {keys_added:,} keys in {total_time:.2f} seconds.") + + +def exec_valkey_cli(hostname: str, username: str, password: str, command: str) -> tuple[str, str]: + """Execute a Valkey CLI command and returns the output as a string.""" + command = f"charmed-valkey.cli -h {hostname} -p {CLIENT_PORT} --user {username} --pass {password} {command}" + result = subprocess.run( + command.split(), check=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True + ) + return result.stdout.strip(), result.stderr.strip() + + +async def set_key( + hostnames: list[str], + username: str, + password: str, + key: str, + value: str, +) -> bytes | None: + """Write a key-value pair to the Valkey cluster. + + Args: + hostnames: List of hostnames of the Valkey cluster nodes. + key: The key to write. + value: The value to write. + username: The username for authentication. + password: The password for authentication. + """ + client = await create_valkey_client(hostnames=hostnames, username=username, password=password) + return await client.set(key, value) + + +async def get_key( + hostnames: list[str], + username: str, + password: str, + key: str, +) -> bytes | None: + """Read a value from the Valkey cluster by key. + + Args: + hostnames: List of hostnames of the Valkey cluster nodes. + key: The key to read. + username: The username for authentication. + password: The password for authentication. + """ + client = await create_valkey_client(hostnames=hostnames, username=username, password=password) + return await client.get(key) + + +def ping( + hostname: str, + username: str, + password: str, +) -> bool: + """Ping a Valkey cluster node. + + Args: + hostname: The hostname of the Valkey cluster node. + username: The username for authentication. + password: The password for authentication. + + Returns: + True if the node responds to a ping, False otherwise. + """ + return exec_valkey_cli(hostname, username, password, "ping")[0] == "PONG" + + +async def ping_cluster( + hostnames: list[str], + username: str, + password: str, +) -> bool: + """Ping all nodes in the Valkey cluster. + + Args: + hostnames: List of hostnames of the Valkey cluster nodes. + username: The username for authentication. + password: The password for authentication. + + Returns: + True if all nodes respond to a ping, False otherwise. + """ + client = await create_valkey_client(hostnames=hostnames, username=username, password=password) + return await client.ping() == "PONG".encode() + + +async def get_nbr_connected_slaves( + hostnames: list[str], + username: str, + password: str, +) -> int: + """Get the number of connected slaves in the Valkey cluster. + + Args: + hostnames: List of hostnames of the Valkey cluster nodes. + username: The username for authentication. + password: The password for authentication. + + Returns: + The number of connected slaves. + """ + client = await create_valkey_client(hostnames=hostnames, username=username, password=password) + info = (await client.info([InfoSection.REPLICATION])).decode() + search_result = re.search(r"connected_slaves:([\d+])", info) + if not search_result: + raise ValueError("Could not parse number of connected slaves from info output") + return int(search_result.group(1)) + + +class NoAuthError(Exception): + """Raised when authentication fails due to missing credentials.""" + + +class WrongPassError(Exception): + """Raised when authentication fails due to incorrect credentials.""" + + +async def auth_test(hostnames: list[str], username: str | None, password: str | None) -> bool: + """Test authentication to the Valkey cluster by attempting to ping it. + + Args: + hostnames: List of hostnames of the Valkey cluster nodes. + username: The username for authentication. + password: The password for authentication. + + Returns: + True if authentication is successful and the cluster responds to a ping, False otherwise. + """ + try: + client = await create_valkey_client( + hostnames=hostnames, username=username, password=password + ) + return await client.ping() == "PONG".encode() + except Exception as e: + error_message = str(e) + if "NOAUTH" in error_message: + raise NoAuthError("Authentication failed: NOAUTH error") from e + elif "WRONGPASS" in error_message: + raise WrongPassError("Authentication failed: WRONGPASS error") from e + else: + raise e diff --git a/tests/integration/k8s/ha/test_scaling.py b/tests/integration/k8s/ha/test_scaling.py index e55530f..586b585 100644 --- a/tests/integration/k8s/ha/test_scaling.py +++ b/tests/integration/k8s/ha/test_scaling.py @@ -4,7 +4,6 @@ import logging import jubilant -import valkey from literals import CharmUsers from tests.integration.cw_helpers import ( @@ -16,6 +15,7 @@ IMAGE_RESOURCE, are_apps_active_and_agents_idle, get_cluster_hostnames, + get_nbr_connected_slaves, get_password, seed_valkey, ) @@ -40,12 +40,12 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: ) -def test_seed_data(juju: jubilant.Juju) -> None: +async def test_seed_data(juju: jubilant.Juju) -> None: """Seed some data to the cluster.""" - seed_valkey(juju, target_gb=1) + await seed_valkey(juju, target_gb=1) -def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: +async def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: """Make sure new units are added to the valkey downtime.""" init_units_count = len(juju.status().apps[APP_NAME].units) @@ -61,35 +61,26 @@ def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: assert num_units == NUM_UNITS, f"Expected {NUM_UNITS} units, got {num_units}." # check if all units have been added to the cluster - endpoints = ",".join(get_cluster_hostnames(juju, APP_NAME)) + hostnames = get_cluster_hostnames(juju, APP_NAME) - sentinel_client = valkey.Sentinel( - [(host, 26379) for host in endpoints.split(",")], + connected_slaves = await get_nbr_connected_slaves( + hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - sentinel_kwargs={ - "password": get_password(juju, user=CharmUsers.SENTINEL_ADMIN), - "username": CharmUsers.SENTINEL_ADMIN.value, - }, ) - master = sentinel_client.master_for("primary") - info = master.info("replication") - connected_slaves = info.get("connected_slaves", 0) assert connected_slaves == NUM_UNITS - 1, ( f"Expected {NUM_UNITS - 1} connected slaves, got {connected_slaves}." ) - assert_continuous_writes_increasing( - endpoints=endpoints, - valkey_user=CharmUsers.VALKEY_ADMIN.value, - valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - sentinel_user=CharmUsers.SENTINEL_ADMIN.value, - sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_ADMIN), + await assert_continuous_writes_increasing( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) logger.info("Stopping continuous writes after scale up test.") - logger.info(c_writes.stop()) + logger.info(await c_writes.async_stop()) assert_continuous_writes_consistent( - endpoints=endpoints, - valkey_user=CharmUsers.VALKEY_ADMIN.value, - valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) diff --git a/tests/integration/k8s/test_charm.py b/tests/integration/k8s/test_charm.py index 021a195..9721ebb 100644 --- a/tests/integration/k8s/test_charm.py +++ b/tests/integration/k8s/test_charm.py @@ -5,7 +5,6 @@ import jubilant import pytest -from valkey import AuthenticationError from literals import ( INTERNAL_USERS_PASSWORD_CONFIG, @@ -16,14 +15,19 @@ APP_NAME, IMAGE_RESOURCE, INTERNAL_USERS_SECRET_LABEL, + NoAuthError, + WrongPassError, are_apps_active_and_agents_idle, - create_valkey_client, + auth_test, does_status_match, + exec_valkey_cli, fast_forward, get_cluster_hostnames, get_password, - get_primary_ip, get_secret_by_label, + ping, + ping_cluster, + set_key, set_password, ) @@ -45,23 +49,20 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: async def test_authentication(juju: jubilant.Juju) -> None: """Assert that we can authenticate to valkey.""" - primary = get_primary_ip(juju, APP_NAME) hostnames = get_cluster_hostnames(juju, APP_NAME) # try without authentication - with pytest.raises(AuthenticationError): - unauth_client = create_valkey_client(hostname=primary, username=None, password=None) - await unauth_client.ping() + with pytest.raises(NoAuthError): + await auth_test(hostnames, username=None, password=None) # Authenticate with internal user password = get_password(juju, user=CharmUsers.VALKEY_ADMIN) assert password is not None, "Admin password secret not found" for hostname in hostnames: - client = create_valkey_client(hostname=hostname, password=password) - assert client.ping() is True, ( - f"Authentication to Valkey cluster failed for host {hostname}" - ) + assert ( + "PONG" in exec_valkey_cli(hostname, CharmUsers.VALKEY_ADMIN.value, password, "ping")[0] + ), "Failed to authenticate with Valkey cluster using CLI" async def test_update_admin_password(juju: jubilant.Juju) -> None: @@ -81,22 +82,28 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: new_password_secret = get_password(juju, user=CharmUsers.VALKEY_ADMIN) assert new_password_secret == new_password, "Admin password not updated in secret" - primary = get_primary_ip(juju, APP_NAME) - + hostnames = get_cluster_hostnames(juju, APP_NAME) # confirm old password no longer works - with pytest.raises(AuthenticationError): - create_valkey_client( - hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=old_password - ).ping() - # ping with new password - client = create_valkey_client( - hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=new_password - ) - assert client.ping() is True, "Failed to authenticate with new admin password" + with pytest.raises(WrongPassError): + await auth_test(hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=old_password) - assert client.set(TEST_KEY, TEST_VALUE) is True, ( - "Failed to write data after admin password update" - ) + assert ( + await ping_cluster( + hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + ) + is True + ), "Failed to authenticate with new admin password" + + assert ( + await set_key( + hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=new_password, + key=TEST_KEY, + value=TEST_VALUE, + ) + == "OK" + ), "Failed to write data after admin password update" # update the config again and remove the option `admin-password` logger.info("Ensure access is still possible after removing config option") @@ -109,15 +116,17 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: ) for hostname in get_cluster_hostnames(juju, APP_NAME): - client = create_valkey_client( - hostname=hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password - ) - assert client.ping() is True, ( + assert ( + ping(hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) is True + ), ( f"Failed to authenticate with admin password after removing user secret on host {hostname}" ) - assert client.get(TEST_KEY) == TEST_VALUE, ( - f"Failed to read data after admin password update on host {hostname}" - ) + assert ( + exec_valkey_cli( + hostname, CharmUsers.VALKEY_ADMIN.value, new_password, f"get {TEST_KEY}" + )[0] + == TEST_VALUE + ), f"Failed to read data after admin password update on host {hostname}" async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None: @@ -151,14 +160,25 @@ async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None ) # perform read operation with the updated password - primary = get_primary_ip(juju, APP_NAME) - client = create_valkey_client( - hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=new_password - ) - assert client.ping() is True, "Failed to authenticate with new admin password" - assert client.set(TEST_KEY, TEST_VALUE) is True, ( - "Failed to write data after admin password update" - ) + assert ( + await ping_cluster( + get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=new_password, + ) + is True + ), "Failed to authenticate with new admin password" + + assert ( + await set_key( + get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=new_password, + key=TEST_KEY, + value=TEST_VALUE, + ) + == "OK" + ), "Failed to write data after admin password update" logger.info("Comparing other users passwords to previously") updated_secret = get_secret_by_label(juju, label=INTERNAL_USERS_SECRET_LABEL) @@ -201,26 +221,33 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: # perform read operation with the updated password hostnames = get_cluster_hostnames(juju, APP_NAME) - primary = get_primary_ip(juju, APP_NAME) - client = create_valkey_client( - hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=new_password - ) - assert client.ping() is True, "Failed to authenticate with new admin password" - assert client.set(TEST_KEY, TEST_VALUE) is True, ( - "Failed to write data after admin password update" - ) - for hostname in hostnames: - client = create_valkey_client( - hostname=hostname, + assert ping_cluster( + hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + ), "Failed to authenticate with new admin password" + + assert ( + await set_key( + hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=new_password, + key=TEST_KEY, + value=TEST_VALUE, ) - assert client.ping() is True, ( - f"Failed to authenticate with new admin password on host {hostname}" - ) - assert client.get(TEST_KEY) == TEST_VALUE, ( - f"Failed to read data after admin password update on host {hostname}" + == "OK" + ), "Failed to write data after admin password update" + + for hostname in hostnames: + assert ( + ping(hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) is True + ), ( + f"Failed to authenticate with admin password after removing user secret on host {hostname}" ) + assert ( + exec_valkey_cli( + hostname, CharmUsers.VALKEY_ADMIN.value, new_password, f"get {TEST_KEY}" + )[0] + == TEST_VALUE + ), f"Failed to read data after admin password update on host {hostname}" logger.info("Password update successful after secret was granted") @@ -240,12 +267,9 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: ) # perform pings with the updated replica password - for hostname in hostnames: - client = create_valkey_client( - hostname=hostname, - username=CharmUsers.VALKEY_REPLICA.value, - password=replica_password, - ) - assert client.ping() is True, ( - f"Failed to authenticate with new replica password on host {hostname}" + for hostname in get_cluster_hostnames(juju, APP_NAME): + assert ( + ping(hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) is True + ), ( + f"Failed to authenticate with admin password after removing user secret on host {hostname}" ) diff --git a/tests/integration/vm/ha/test_scaling.py b/tests/integration/vm/ha/test_scaling.py index fbd977e..ca7254a 100644 --- a/tests/integration/vm/ha/test_scaling.py +++ b/tests/integration/vm/ha/test_scaling.py @@ -4,7 +4,6 @@ import logging import jubilant -import valkey from literals import CharmUsers from tests.integration.cw_helpers import ( @@ -15,6 +14,7 @@ APP_NAME, are_apps_active_and_agents_idle, get_cluster_hostnames, + get_nbr_connected_slaves, get_password, seed_valkey, ) @@ -39,57 +39,47 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: ) -def test_seed_data(juju: jubilant.Juju) -> None: +async def test_seed_data(juju: jubilant.Juju) -> None: """Seed some data to the cluster.""" - seed_valkey(juju, target_gb=1) + await seed_valkey(juju, target_gb=1) -def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: +async def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: """Make sure new units are added to the valkey downtime.""" init_units_count = len(juju.status().apps[APP_NAME].units) + # scale up - juju.add_unit(APP_NAME, num_units=2) + juju.add_unit(APP_NAME, num_units=NUM_UNITS - init_units_count) juju.wait( lambda status: are_apps_active_and_agents_idle( - status, APP_NAME, idle_period=10, unit_count=init_units_count + 2 + status, APP_NAME, idle_period=10, unit_count=NUM_UNITS ), timeout=1200, ) num_units = len(juju.status().apps[APP_NAME].units) - assert num_units == init_units_count + 2, ( - f"Expected {init_units_count + 2} units, got {num_units}." - ) + assert num_units == NUM_UNITS, f"Expected {NUM_UNITS} units, got {num_units}." # check if all units have been added to the cluster - endpoints = ",".join(get_cluster_hostnames(juju, APP_NAME)) + hostnames = get_cluster_hostnames(juju, APP_NAME) - sentinel_client = valkey.Sentinel( - [(host, 26379) for host in endpoints.split(",")], + connected_slaves = await get_nbr_connected_slaves( + hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - sentinel_kwargs={ - "password": get_password(juju, user=CharmUsers.SENTINEL_ADMIN), - "username": CharmUsers.SENTINEL_ADMIN.value, - }, ) - master = sentinel_client.master_for("primary") - info = master.info("replication") - connected_slaves = info.get("connected_slaves", 0) - assert connected_slaves == num_units - 1, ( - f"Expected {num_units - 1} connected slaves, got {connected_slaves}." + assert connected_slaves == NUM_UNITS - 1, ( + f"Expected {NUM_UNITS - 1} connected slaves, got {connected_slaves}." ) - assert_continuous_writes_increasing( - endpoints=endpoints, - valkey_user=CharmUsers.VALKEY_ADMIN.value, - valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - sentinel_user=CharmUsers.SENTINEL_ADMIN.value, - sentinel_password=get_password(juju, user=CharmUsers.SENTINEL_ADMIN), + await assert_continuous_writes_increasing( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) logger.info("Stopping continuous writes after scale up test.") - logger.info(c_writes.stop()) + logger.info(await c_writes.async_stop()) assert_continuous_writes_consistent( - endpoints=endpoints, - valkey_user=CharmUsers.VALKEY_ADMIN.value, - valkey_password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) diff --git a/tests/integration/vm/test_charm.py b/tests/integration/vm/test_charm.py index eb22aa3..41bdebd 100644 --- a/tests/integration/vm/test_charm.py +++ b/tests/integration/vm/test_charm.py @@ -5,7 +5,6 @@ import jubilant import pytest -from valkey import AuthenticationError from literals import ( INTERNAL_USERS_PASSWORD_CONFIG, @@ -15,14 +14,19 @@ from tests.integration.helpers import ( APP_NAME, INTERNAL_USERS_SECRET_LABEL, + NoAuthError, + WrongPassError, are_apps_active_and_agents_idle, - create_valkey_client, + auth_test, does_status_match, + exec_valkey_cli, fast_forward, get_cluster_hostnames, get_password, - get_primary_ip, get_secret_by_label, + ping, + ping_cluster, + set_key, set_password, ) @@ -44,23 +48,20 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: async def test_authentication(juju: jubilant.Juju) -> None: """Assert that we can authenticate to valkey.""" - primary = get_primary_ip(juju, APP_NAME) hostnames = get_cluster_hostnames(juju, APP_NAME) # try without authentication - with pytest.raises(AuthenticationError): - unauth_client = create_valkey_client(hostname=primary, username=None, password=None) - await unauth_client.ping() + with pytest.raises(NoAuthError): + await auth_test(hostnames, username=None, password=None) # Authenticate with internal user password = get_password(juju, user=CharmUsers.VALKEY_ADMIN) assert password is not None, "Admin password secret not found" for hostname in hostnames: - client = create_valkey_client(hostname=hostname, password=password) - assert client.ping() is True, ( - f"Authentication to Valkey cluster failed for host {hostname}" - ) + assert ( + "PONG" in exec_valkey_cli(hostname, CharmUsers.VALKEY_ADMIN.value, password, "ping")[0] + ), "Failed to authenticate with Valkey cluster using CLI" async def test_update_admin_password(juju: jubilant.Juju) -> None: @@ -80,22 +81,28 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: new_password_secret = get_password(juju, user=CharmUsers.VALKEY_ADMIN) assert new_password_secret == new_password, "Admin password not updated in secret" - primary = get_primary_ip(juju, APP_NAME) - + hostnames = get_cluster_hostnames(juju, APP_NAME) # confirm old password no longer works - with pytest.raises(AuthenticationError): - create_valkey_client( - hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=old_password - ).ping() - # ping with new password - client = create_valkey_client( - hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=new_password - ) - assert client.ping() is True, "Failed to authenticate with new admin password" + with pytest.raises(WrongPassError): + await auth_test(hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=old_password) - assert client.set(TEST_KEY, TEST_VALUE) is True, ( - "Failed to write data after admin password update" - ) + assert ( + await ping_cluster( + hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + ) + is True + ), "Failed to authenticate with new admin password" + + assert ( + await set_key( + hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=new_password, + key=TEST_KEY, + value=TEST_VALUE, + ) + == "OK" + ), "Failed to write data after admin password update" # update the config again and remove the option `admin-password` logger.info("Ensure access is still possible after removing config option") @@ -108,15 +115,17 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: ) for hostname in get_cluster_hostnames(juju, APP_NAME): - client = create_valkey_client( - hostname=hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password - ) - assert client.ping() is True, ( + assert ( + ping(hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) is True + ), ( f"Failed to authenticate with admin password after removing user secret on host {hostname}" ) - assert client.get(TEST_KEY) == TEST_VALUE, ( - f"Failed to read data after admin password update on host {hostname}" - ) + assert ( + exec_valkey_cli( + hostname, CharmUsers.VALKEY_ADMIN.value, new_password, f"get {TEST_KEY}" + )[0] + == TEST_VALUE + ), f"Failed to read data after admin password update on host {hostname}" async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None: @@ -150,14 +159,25 @@ async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None ) # perform read operation with the updated password - primary = get_primary_ip(juju, APP_NAME) - client = create_valkey_client( - hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=new_password - ) - assert client.ping() is True, "Failed to authenticate with new admin password" - assert client.set(TEST_KEY, TEST_VALUE) is True, ( - "Failed to write data after admin password update" - ) + assert ( + await ping_cluster( + get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=new_password, + ) + is True + ), "Failed to authenticate with new admin password" + + assert ( + await set_key( + get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=new_password, + key=TEST_KEY, + value=TEST_VALUE, + ) + == "OK" + ), "Failed to write data after admin password update" logger.info("Comparing other users passwords to previously") updated_secret = get_secret_by_label(juju, label=INTERNAL_USERS_SECRET_LABEL) @@ -200,26 +220,33 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: # perform read operation with the updated password hostnames = get_cluster_hostnames(juju, APP_NAME) - primary = get_primary_ip(juju, APP_NAME) - client = create_valkey_client( - hostname=primary, username=CharmUsers.VALKEY_ADMIN.value, password=new_password - ) - assert client.ping() is True, "Failed to authenticate with new admin password" - assert client.set(TEST_KEY, TEST_VALUE) is True, ( - "Failed to write data after admin password update" - ) - for hostname in hostnames: - client = create_valkey_client( - hostname=hostname, + assert ping_cluster( + hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + ), "Failed to authenticate with new admin password" + + assert ( + await set_key( + hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=new_password, + key=TEST_KEY, + value=TEST_VALUE, ) - assert client.ping() is True, ( - f"Failed to authenticate with new admin password on host {hostname}" - ) - assert client.get(TEST_KEY) == TEST_VALUE, ( - f"Failed to read data after admin password update on host {hostname}" + == "OK" + ), "Failed to write data after admin password update" + + for hostname in hostnames: + assert ( + ping(hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) is True + ), ( + f"Failed to authenticate with admin password after removing user secret on host {hostname}" ) + assert ( + exec_valkey_cli( + hostname, CharmUsers.VALKEY_ADMIN.value, new_password, f"get {TEST_KEY}" + )[0] + == TEST_VALUE + ), f"Failed to read data after admin password update on host {hostname}" logger.info("Password update successful after secret was granted") @@ -239,12 +266,9 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: ) # perform pings with the updated replica password - for hostname in hostnames: - client = create_valkey_client( - hostname=hostname, - username=CharmUsers.VALKEY_REPLICA.value, - password=replica_password, - ) - assert client.ping() is True, ( - f"Failed to authenticate with new replica password on host {hostname}" + for hostname in get_cluster_hostnames(juju, APP_NAME): + assert ( + ping(hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) is True + ), ( + f"Failed to authenticate with admin password after removing user secret on host {hostname}" ) From cb3e0ecfd7ca69dc36a57f8af9c1c89cc6cc2ad7 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Feb 2026 12:00:26 +0000 Subject: [PATCH 097/282] install charmed-valkey snap --- tox.ini | 1 + 1 file changed, 1 insertion(+) diff --git a/tox.ini b/tox.ini index f50b41d..c955bd5 100644 --- a/tox.ini +++ b/tox.ini @@ -66,6 +66,7 @@ allowlist_externals = sh commands_pre = poetry install --only integration + sudo snap install charmed-valkey --channel 9/edge commands = # on CI, concierge will setup the model `testing` - locally we need to do it ourselves sh -c "if [ -z "$CI" ]; then juju add-model testing && juju model-config logging-config='=INFO;unit=DEBUG'; fi;" From 95abc33c109ad907d77cb272bdcea8ce91da76c8 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Feb 2026 12:39:41 +0000 Subject: [PATCH 098/282] add sudo and snap to allowlist --- tox.ini | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tox.ini b/tox.ini index c955bd5..7e8a2f0 100644 --- a/tox.ini +++ b/tox.ini @@ -64,6 +64,8 @@ pass_env = allowlist_externals = {[testenv]allowlist_externals} sh + sudo + snap commands_pre = poetry install --only integration sudo snap install charmed-valkey --channel 9/edge From 7d51cb4e1487f30c2a99b66eceb2a1562b3dca09 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Feb 2026 14:02:01 +0000 Subject: [PATCH 099/282] mv from snap to downloading cli --- tests/integration/helpers.py | 4 +++- tox.ini | 11 +++++++++-- 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 332b815..802cde7 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -392,7 +392,9 @@ async def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: def exec_valkey_cli(hostname: str, username: str, password: str, command: str) -> tuple[str, str]: """Execute a Valkey CLI command and returns the output as a string.""" - command = f"charmed-valkey.cli -h {hostname} -p {CLIENT_PORT} --user {username} --pass {password} {command}" + command = ( + f"valkey-cli -h {hostname} -p {CLIENT_PORT} --user {username} --pass {password} {command}" + ) result = subprocess.run( command.split(), check=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True ) diff --git a/tox.ini b/tox.ini index 7e8a2f0..3d98276 100644 --- a/tox.ini +++ b/tox.ini @@ -65,10 +65,17 @@ allowlist_externals = {[testenv]allowlist_externals} sh sudo - snap + apt + mv + wget + tar commands_pre = poetry install --only integration - sudo snap install charmed-valkey --channel 9/edge + sudo apt install wget -y + sh -c "mkdir -p /tmp/valkey_cli" + sh -c 'if [ "$(uname -m)" = "aarch64" ]; then wget https://download.valkey.io/releases/valkey-9.0.2-jammy-arm64.tar.gz -O /tmp/valkey_cli/valkey.tar.gz; else wget https://download.valkey.io/releases/valkey-9.0.2-jammy-x86_64.tar.gz -O /tmp/valkey_cli/valkey.tar.gz; fi' + tar -xvf /tmp/valkey_cli/valkey.tar.gz -C /tmp/valkey_cli + sh -c 'sudo mv /tmp/valkey_cli/valkey-9.0.2-jammy-*/bin/valkey-cli /usr/local/bin' commands = # on CI, concierge will setup the model `testing` - locally we need to do it ourselves sh -c "if [ -z "$CI" ]; then juju add-model testing && juju model-config logging-config='=INFO;unit=DEBUG'; fi;" From c1fa74e67d490905e0a1a53349c486189ff2dabc Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 20 Feb 2026 03:22:53 +0000 Subject: [PATCH 100/282] switch creating glie client to context manager to close connection automatically --- tests/integration/continuous_writes.py | 2 - tests/integration/cw_helpers.py | 14 ++-- tests/integration/helpers.py | 92 +++++++++++++++----------- tests/integration/k8s/test_charm.py | 7 +- tests/integration/vm/test_charm.py | 7 +- 5 files changed, 69 insertions(+), 53 deletions(-) diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index d0ea9fb..ed87368 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -256,8 +256,6 @@ async def with_client(conf: SimpleNamespace): while not event.is_set(): try: config = data_queue.get_nowait() - # await client.close() - # client = await _make_client(config) proc_logger.info("Configuration updated, client reconnected.") except queue.Empty: pass diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index 022c0b1..150a399 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -52,16 +52,16 @@ async def assert_continuous_writes_increasing( password: str, ) -> None: """Assert that the continuous writes are increasing.""" - client = await create_valkey_client( + async with create_valkey_client( hostnames, username=username, password=password, - ) - writes_count = await client.llen(KEY) - await asyncio.sleep(10) - more_writes = await client.llen(KEY) - assert more_writes > writes_count, "Writes not continuing to DB" - logger.info("Continuous writes are increasing.") + ) as client: + writes_count = await client.llen(KEY) + await asyncio.sleep(10) + more_writes = await client.llen(KEY) + assert more_writes > writes_count, "Writes not continuing to DB" + logger.info("Continuous writes are increasing.") def assert_continuous_writes_consistent( diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 802cde7..5a8afa2 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -2,12 +2,12 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. -import contextlib import logging import os import re import subprocess import time +from contextlib import asynccontextmanager, contextmanager from datetime import datetime, timedelta from pathlib import Path from typing import List @@ -245,6 +245,7 @@ def get_secret_by_label(juju: jubilant.Juju, label: str) -> dict[str, str]: raise SecretNotFoundError(f"Secret with label {label} not found") +@asynccontextmanager async def create_valkey_client( hostnames: list[str], username: str | None = CharmUsers.VALKEY_ADMIN.value, @@ -256,7 +257,6 @@ async def create_valkey_client( hostnames: List of hostnames of the Valkey cluster nodes. username: The username for authentication. password: The password for the internal user. - tls_enabled: Whether TLS certificates are needed. Returns: A Valkey client instance connected to the cluster. @@ -272,7 +272,11 @@ async def create_valkey_client( credentials=credentials, ) - return await GlideClient.create(client_config) + client = await GlideClient.create(client_config) + try: + yield client + finally: + await client.close() def set_password( @@ -306,7 +310,7 @@ def set_password( juju.config(app=application, values={INTERNAL_USERS_PASSWORD_CONFIG: secret_id}) -@contextlib.contextmanager +@contextmanager def fast_forward(juju: jubilant.Juju): """Context manager that temporarily speeds up update-status hooks to fire every 10s.""" old = juju.model_config()["update-status-hook-interval"] @@ -324,8 +328,8 @@ async def get_primary_ip(juju: jubilant.Juju, app: str) -> str: The IP address of the primary node. """ hostnames = get_cluster_hostnames(juju, app) - client = await create_valkey_client([hostnames[0]], password=get_password(juju)) - info = await client.custom_command(["client", "info"]) + async with create_valkey_client([hostnames[0]], password=get_password(juju)) as client: + info = await client.custom_command(["client", "info"]) match = re.search(r"laddr=([\d\.]+):", info.decode()) if match: return match.group(1) @@ -349,7 +353,6 @@ def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN async def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: # Connect to Valkey hostnames = get_cluster_hostnames(juju, APP_NAME) - client = await create_valkey_client(hostnames, password=get_password(juju)) # Configuration value_size_bytes = 1024 # 1KB per value @@ -366,29 +369,34 @@ async def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: # Generate a fixed random block to reuse (saves CPU cycles on generation) random_data = os.urandom(value_size_bytes).hex()[:value_size_bytes] - - try: - while keys_added < total_keys: - data = {f"{SEED_KEY_PREFIX}{key_idx}": random_data for key_idx in range(batch_size)} - - if await client.mset(data) != "OK": - raise RuntimeError("Failed to set data in Valkey cluster") - - keys_added += batch_size - - # Progress reporting - elapsed = time.time() - start_time - percent = (keys_added / total_keys) * 100 + async with create_valkey_client(hostnames, password=get_password(juju)) as client: + try: + while keys_added < total_keys: + data = { + f"{SEED_KEY_PREFIX}{key_idx}": random_data + for key_idx in range(keys_added, keys_added + batch_size) + } + + if await client.mset(data) != "OK": + raise RuntimeError("Failed to set data in Valkey cluster") + + keys_added += batch_size + + # Progress reporting + elapsed = time.time() - start_time + percent = (keys_added / total_keys) * 100 + logger.info( + f"Progress: {percent:.1f}% | Keys: {keys_added:,} | Elapsed: {elapsed:.1f}s", + ) + + except Exception as e: + logger.error(f"\nError: {e}") + finally: + total_time = time.time() - start_time logger.info( - f"Progress: {percent:.1f}% | Keys: {keys_added:,} | Elapsed: {elapsed:.1f}s", + f"\nSeeding complete! Added {keys_added:,} keys in {total_time:.2f} seconds." ) - except Exception as e: - logger.error(f"\nError: {e}") - finally: - total_time = time.time() - start_time - logger.info(f"\nSeeding complete! Added {keys_added:,} keys in {total_time:.2f} seconds.") - def exec_valkey_cli(hostname: str, username: str, password: str, command: str) -> tuple[str, str]: """Execute a Valkey CLI command and returns the output as a string.""" @@ -417,8 +425,10 @@ async def set_key( username: The username for authentication. password: The password for authentication. """ - client = await create_valkey_client(hostnames=hostnames, username=username, password=password) - return await client.set(key, value) + async with create_valkey_client( + hostnames=hostnames, username=username, password=password + ) as client: + return await client.set(key, value) async def get_key( @@ -435,8 +445,10 @@ async def get_key( username: The username for authentication. password: The password for authentication. """ - client = await create_valkey_client(hostnames=hostnames, username=username, password=password) - return await client.get(key) + async with create_valkey_client( + hostnames=hostnames, username=username, password=password + ) as client: + return await client.get(key) def ping( @@ -472,8 +484,10 @@ async def ping_cluster( Returns: True if all nodes respond to a ping, False otherwise. """ - client = await create_valkey_client(hostnames=hostnames, username=username, password=password) - return await client.ping() == "PONG".encode() + async with create_valkey_client( + hostnames=hostnames, username=username, password=password + ) as client: + return await client.ping() == "PONG".encode() async def get_nbr_connected_slaves( @@ -491,8 +505,10 @@ async def get_nbr_connected_slaves( Returns: The number of connected slaves. """ - client = await create_valkey_client(hostnames=hostnames, username=username, password=password) - info = (await client.info([InfoSection.REPLICATION])).decode() + async with create_valkey_client( + hostnames=hostnames, username=username, password=password + ) as client: + info = (await client.info([InfoSection.REPLICATION])).decode() search_result = re.search(r"connected_slaves:([\d+])", info) if not search_result: raise ValueError("Could not parse number of connected slaves from info output") @@ -519,10 +535,10 @@ async def auth_test(hostnames: list[str], username: str | None, password: str | True if authentication is successful and the cluster responds to a ping, False otherwise. """ try: - client = await create_valkey_client( + async with create_valkey_client( hostnames=hostnames, username=username, password=password - ) - return await client.ping() == "PONG".encode() + ) as client: + return await client.ping() == "PONG".encode() except Exception as e: error_message = str(e) if "NOAUTH" in error_message: diff --git a/tests/integration/k8s/test_charm.py b/tests/integration/k8s/test_charm.py index 9721ebb..23f6345 100644 --- a/tests/integration/k8s/test_charm.py +++ b/tests/integration/k8s/test_charm.py @@ -221,7 +221,7 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: # perform read operation with the updated password hostnames = get_cluster_hostnames(juju, APP_NAME) - assert ping_cluster( + assert await ping_cluster( hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=new_password ), "Failed to authenticate with new admin password" @@ -269,7 +269,8 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: # perform pings with the updated replica password for hostname in get_cluster_hostnames(juju, APP_NAME): assert ( - ping(hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) is True + ping(hostname, username=CharmUsers.VALKEY_REPLICA.value, password=replica_password) + is True ), ( - f"Failed to authenticate with admin password after removing user secret on host {hostname}" + f"Failed to authenticate with replica password after removing user secret on host {hostname}" ) diff --git a/tests/integration/vm/test_charm.py b/tests/integration/vm/test_charm.py index 41bdebd..dfcf05d 100644 --- a/tests/integration/vm/test_charm.py +++ b/tests/integration/vm/test_charm.py @@ -220,7 +220,7 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: # perform read operation with the updated password hostnames = get_cluster_hostnames(juju, APP_NAME) - assert ping_cluster( + assert await ping_cluster( hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=new_password ), "Failed to authenticate with new admin password" @@ -268,7 +268,8 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: # perform pings with the updated replica password for hostname in get_cluster_hostnames(juju, APP_NAME): assert ( - ping(hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) is True + ping(hostname, username=CharmUsers.VALKEY_REPLICA.value, password=replica_password) + is True ), ( - f"Failed to authenticate with admin password after removing user secret on host {hostname}" + f"Failed to authenticate with replica password after removing user secret on host {hostname}" ) From dfbde4192cc1efccbac0046382c6f05c11766413 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 20 Feb 2026 09:34:08 +0000 Subject: [PATCH 101/282] wip scale down --- metadata.yaml | 10 +++ src/common/client.py | 101 +++++++++++++++++++++++++- src/common/exceptions.py | 12 ++++ src/common/locks.py | 143 ++++++++++++++++++++++++++++++++++++ src/core/base_workload.py | 5 ++ src/core/models.py | 5 +- src/events/base_events.py | 147 ++++++++++++++++++++++++-------------- src/literals.py | 13 ++++ src/managers/sentinel.py | 121 +++++++++++++++++++++++++++++++ src/workload_k8s.py | 11 +++ src/workload_vm.py | 17 +++++ 11 files changed, 531 insertions(+), 54 deletions(-) create mode 100644 src/common/locks.py diff --git a/metadata.yaml b/metadata.yaml index 69e11f4..0da524c 100644 --- a/metadata.yaml +++ b/metadata.yaml @@ -22,6 +22,9 @@ website: containers: valkey: resource: valkey-image + mounts: + - storage: data + location: /var/lib/valkey/ resources: valkey-image: @@ -34,3 +37,10 @@ peers: interface: valkey_peers status-peers: interface: status_peers + +storage: + data: + type: filesystem + location: /var/snap/charmed-valkey/common/var/lib/charmed-valkey + description: storage for valkey data + minimum-size: 1G diff --git a/src/common/client.py b/src/common/client.py index 75ae51d..b72a9f6 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -6,6 +6,8 @@ import logging from typing import Literal +from tenacity import retry, stop_after_attempt, wait_fixed + from common.exceptions import ValkeyWorkloadCommandError from core.base_workload import WorkloadBase from literals import CLIENT_PORT, PRIMARY_NAME, SENTINEL_PORT @@ -57,8 +59,9 @@ def exec_cli_command( "--pass", self.password, ] + command + logger.debug(f"Executing CLI command on {hostname}: {cli_command}") output, error = self.workload.exec(cli_command) - return output, error + return output.strip(), error def ping(self, hostname: str) -> bool: """Ping the Valkey server to check if it's responsive. @@ -273,3 +276,99 @@ def sentinel_get_master_info(self, hostname: str) -> dict[str, str] | None: except ValkeyWorkloadCommandError as e: logger.error(f"Failed to get master info from sentinel at {hostname}: {e}") return None + + def sentinel_failover(self, hostname: str): + """Trigger a failover through the sentinel. + + Args: + hostname (str): The hostname to connect to. + + Returns: + bool: True if the failover command was executed successfully, False otherwise. + """ + if not self.connect_to == "sentinel": + logger.error( + "Attempted to trigger failover through sentinel while client is configured to connect to valkey." + ) + raise ValueError("Client is not configured to connect to sentinel.") + try: + output, err = self.exec_cli_command( + command=["sentinel", "failover", PRIMARY_NAME, "coordinated"], + hostname=hostname, + ) + if "OK" not in output.strip(): + logger.error( + "Failed to trigger failover through sentinel at %s: stdout: %s, stderr: %s", + hostname, + output, + err, + ) + raise ValkeyWorkloadCommandError( + f"Failed to trigger failover through sentinel at {hostname}: stdout, stderr: {(output, err)}" + ) + except ValkeyWorkloadCommandError as e: + logger.error(f"Failed to trigger failover through sentinel at {hostname}: {e}") + raise + + def sentinel_reset_state(self, hostname: str) -> None: + """Reset the sentinel state for the primary. + + Args: + hostname (str): The hostname to connect to. + """ + if not self.connect_to == "sentinel": + logger.error( + "Attempted to reset sentinel state through sentinel while client is configured to connect to valkey." + ) + raise ValueError("Client is not configured to connect to sentinel.") + try: + output, err = self.exec_cli_command( + command=["sentinel", "reset", PRIMARY_NAME], + hostname=hostname, + ) + if output != "1": + raise ValkeyWorkloadCommandError( + f"Failed to reset sentinel state through sentinel at {hostname}: stdout, stderr: {(output, err)}" + ) + except ValkeyWorkloadCommandError as e: + logger.error(f"Failed to reset sentinel state through sentinel at {hostname}: {e}") + raise + + @retry( + stop=stop_after_attempt(3), + wait=wait_fixed(1), + reraise=True, + ) + def sentinel_get_replica_info(self, hostname: str) -> str: + """Get the replicas information of the primary from sentinel. + + Args: + hostname (str): The hostname to connect to. + + Returns: + str | None: The output of the "sentinel replicas" command if retrieved successfully, None otherwise. + """ + if not self.connect_to == "sentinel": + logger.error( + "Attempted to get replica info from sentinel while client is configured to connect to valkey." + ) + raise ValueError("Client is not configured to connect to sentinel.") + try: + output, err = self.exec_cli_command( + command=["sentinel", "replicas", PRIMARY_NAME], + hostname=hostname, + ) + logger.debug( + "Output of 'sentinel replicas' command from sentinel at %s: stdout, stderr: %s", + hostname, + (output, err), + ) + if not output.strip(): + logger.warning(f"No replica info found in sentinel at {hostname}.") + raise ValkeyWorkloadCommandError( + f"No replica info found in sentinel at {hostname}." + ) + return output.strip() + except ValkeyWorkloadCommandError as e: + logger.error(f"Failed to get replica info from sentinel at {hostname}: {e}") + raise diff --git a/src/common/exceptions.py b/src/common/exceptions.py index 756f285..2936558 100644 --- a/src/common/exceptions.py +++ b/src/common/exceptions.py @@ -34,3 +34,15 @@ class ValkeyServiceNotAliveError(Exception): class ValkeyConfigurationError(Exception): """Custom Exception if Valkey configuration fails to be set.""" + + +class SentinelFailoverError(Exception): + """Custom Exception if triggering sentinel failover fails.""" + + +class ValkeyServicesCouldNotBeStoppedError(Exception): + """Custom Exception if Valkey services could not be stopped.""" + + +class CannotSeeAllActiveSentinelsError(Exception): + """Custom Exception if the local sentinel cannot see all active sentinels in the cluster.""" diff --git a/src/common/locks.py b/src/common/locks.py new file mode 100644 index 0000000..d945532 --- /dev/null +++ b/src/common/locks.py @@ -0,0 +1,143 @@ +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. + +"""Collection of lock names for cluster operations.""" + +import logging +from abc import ABC, abstractmethod +from typing import TYPE_CHECKING + +if TYPE_CHECKING: + from core.cluster_state import ClusterState + from core.models import ValkeyServer + + +logger = logging.getLogger(__name__) + + +class Lock(ABC): + """Base class for locks.""" + + unit_request_lock_atr_name: str + member_with_lock_atr_name: str + + def __init__(self, state: "ClusterState") -> None: + self.state = state + + @property + def name(self) -> str: + """Get the name of the lock.""" + return self.__class__.__name__.lower() + + @property + def units_requesting_lock(self) -> list[str]: + """Get the list of units requesting the start lock.""" + return [ + unit.unit_name + for unit in self.state.servers + if unit.model and getattr(unit.model, self.unit_request_lock_atr_name, False) + ] + + @property + def next_unit_to_give_lock(self) -> str | None: + """Get the next unit to give the start lock to.""" + return self.units_requesting_lock[0] if self.units_requesting_lock else None + + @property + def unit_with_lock(self) -> "ValkeyServer | None": + """Get the unit that currently holds the start lock.""" + return next( + ( + unit + for unit in self.state.servers + if unit.unit_name + == getattr(self.state.cluster.model, self.member_with_lock_atr_name, "") + ), + None, + ) + + @property + @abstractmethod + def is_lock_free_to_give(self) -> bool: + """Check if the unit with the lock has completed its operation.""" + pass + + def do_i_hold_lock(self) -> bool: + """Check if the local unit holds the start lock.""" + return self.state.unit_server.unit_name == getattr( + self.state.cluster.model, self.member_with_lock_atr_name, "" + ) + + def request_lock(self) -> None: + """Request the lock for the local unit.""" + self.state.unit_server.update( + { + self.unit_request_lock_atr_name: True, + } + ) + if self.state.unit_server.unit.is_leader(): + logger.info( + f"Leader unit requesting {self.name} lock. Triggering lock request processing." + ) + self.process() + + def release_lock(self) -> None: + """Release the lock from the local unit.""" + self.state.unit_server.update( + { + self.unit_request_lock_atr_name: False, + } + ) + if self.state.unit_server.unit.is_leader(): + logger.info( + f"Leader unit releasing {self.name} lock. Triggering lock request processing." + ) + self.process() + + def process(self) -> None: + """Process the lock requests and update the unit with the lock.""" + if not self.state.unit_server.unit.is_leader(): + logger.info(f"Only the leader can process {self.name} lock requests.") + return + + if self.is_lock_free_to_give: + next_unit = self.next_unit_to_give_lock + self.state.cluster.update({self.member_with_lock_atr_name: next_unit}) + logger.debug(f"Gave {self.name} lock to {next_unit}") + logger.debug( + f"{self.name} lock is currently held by {getattr(self.state.cluster.model, self.member_with_lock_atr_name)}" + ) + + +class StartLock(Lock): + """Lock for starting operations.""" + + unit_request_lock_atr_name = "request_start_lock" + member_with_lock_atr_name = "start_member" + + @property + def is_lock_free_to_give(self) -> bool: + """Check if the unit with the start lock has completed its operation.""" + starting_unit = self.unit_with_lock + return ( + not self.state.cluster.model.start_member + or not starting_unit + or starting_unit.is_started + ) + + +class ScaleDownLock(Lock): + """Lock for scale down operations.""" + + unit_request_lock_atr_name = "request_scale_down_lock" + member_with_lock_atr_name = "scale_down_member" + + @property + def is_lock_free_to_give(self) -> bool: + """Check if the unit with the scale down lock has completed its operation.""" + scaling_down_unit = self.unit_with_lock + return ( + not self.state.cluster.model.scale_down_member + or not scaling_down_unit + or scaling_down_unit.model.request_scale_down_lock is False + ) diff --git a/src/core/base_workload.py b/src/core/base_workload.py index 1f97310..f7ead8f 100644 --- a/src/core/base_workload.py +++ b/src/core/base_workload.py @@ -42,6 +42,11 @@ def start(self) -> None: """ pass + @abstractmethod + def stop(self) -> None: + """Stop the workload service.""" + pass + @abstractmethod def exec(self, command: list[str]) -> tuple[str, str | None]: """Run a command on the workload substrate.""" diff --git a/src/core/models.py b/src/core/models.py index fcf79bc..5a01972 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -36,7 +36,8 @@ class PeerAppModel(PeerModel): charmed_stats_password: InternalUsersSecret = Field(default="") charmed_sentinel_peers_password: InternalUsersSecret = Field(default="") charmed_sentinel_operator_password: InternalUsersSecret = Field(default="") - starting_member: str = Field(default="") + start_member: str = Field(default="") + scale_down_member: str = Field(default="") class PeerUnitModel(PeerModel): @@ -47,6 +48,8 @@ class PeerUnitModel(PeerModel): hostname: str = Field(default="") private_ip: str = Field(default="") request_start_lock: bool = Field(default=False) + request_scale_down_lock: bool = Field(default=False) + scale_down_state: str = Field(default="") class RelationState: diff --git a/src/events/base_events.py b/src/events/base_events.py index 9d94aa6..8da55df 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -11,19 +11,25 @@ import ops from common.exceptions import ( + CannotSeeAllActiveSentinelsError, + SentinelFailoverError, ValkeyACLLoadError, ValkeyConfigSetError, ValkeyConfigurationError, ValkeyServiceNotAliveError, + ValkeyServicesCouldNotBeStoppedError, ValkeyServicesFailedToStartError, ValkeyWorkloadCommandError, ) +from common.locks import ScaleDownLock, StartLock from literals import ( CLIENT_PORT, + DATA_STORAGE, INTERNAL_USERS_PASSWORD_CONFIG, INTERNAL_USERS_SECRET_LABEL_SUFFIX, PEER_RELATION, CharmUsers, + ScaleDownState, StartState, Substrate, ) @@ -75,6 +81,9 @@ def __init__(self, charm: "ValkeyCharm"): self.framework.observe(self.charm.on.config_changed, self._on_config_changed) self.framework.observe(self.charm.on.secret_changed, self._on_secret_changed) self.framework.observe(self.unit_fully_started, self._on_unit_fully_started) + self.framework.observe( + self.charm.on[DATA_STORAGE].storage_detaching, self._on_storage_detaching + ) def _on_install(self, event: ops.InstallEvent) -> None: """Handle install event.""" @@ -89,7 +98,14 @@ def _on_install(self, event: ops.InstallEvent) -> None: def _on_start(self, event: ops.StartEvent) -> None: """Handle the on start event.""" - self.charm.state.unit_server.update({"start_state": StartState.NOT_STARTED.value}) + self.charm.state.unit_server.update( + { + "start_state": StartState.NOT_STARTED.value, + "hostname": socket.gethostname(), + "private_ip": self.charm.state.bind_address, + } + ) + start_lock = StartLock(self.charm.state) if not self.charm.workload.can_connect: logger.warning("Workload not ready yet") @@ -103,18 +119,10 @@ def _on_start(self, event: ops.StartEvent) -> None: event.defer() return - self.charm.state.unit_server.update( - {"start_state": StartState.WAITING_TO_START.value, "request_start_lock": True} - ) + self.charm.state.unit_server.update({"start_state": StartState.WAITING_TO_START.value}) + start_lock.request_lock() - if self.charm.unit.is_leader(): - logger.info( - "Leader unit requesting lock to start services. Triggering lock request processing." - ) - self._process_lock_requests() - - # TODO unit.name would not work across models we need to switch to using `model.unit.name + model_uuid` - if self.charm.state.cluster.model.starting_member != self.charm.unit.name: + if not start_lock.do_i_hold_lock(): logger.info("Waiting for lock to start") event.defer() return @@ -195,7 +203,9 @@ def _on_unit_fully_started(self, event: UnitFullyStarted) -> None: event.defer() return - if not event.is_primary and not self.charm.sentinel_manager.is_sentinel_discovered(): + if not event.is_primary and not self.charm.sentinel_manager.is_sentinel_discovered( + self.charm.state.bind_address + ): logger.info("Sentinel service not yet discovered by other units. Deferring event.") self.charm.state.unit_server.update( {"start_state": StartState.STARTING_WAITING_SENTINEL.value} @@ -223,45 +233,8 @@ def _on_peer_relation_changed(self, event: ops.RelationChangedEvent) -> None: if not self.charm.unit.is_leader(): return - self._process_lock_requests() - - def _process_lock_requests(self) -> None: - """Process start lock requests. - - The leader unit will choose one of the units that requested the lock to start, and update the cluster model with that unit as the starting member. - """ - units_requesting_start = [ - unit.unit_name - for unit in self.charm.state.servers - if unit.model and unit.model.request_start_lock - ] - starting_unit = next( - ( - unit - for unit in self.charm.state.servers - if unit.unit_name == self.charm.state.cluster.model.starting_member - ), - None, - ) - if ( - # if the starting member has not started yet, we want to wait for it to start instead of choosing another unit that requested start - self.charm.state.cluster.model.starting_member - and starting_unit - and not starting_unit.is_started - ): - logger.debug( - "Starting member %s has not started yet. Units requesting start: %s. ", - self.charm.state.cluster.model.starting_member, - units_requesting_start, - ) - return - - self.charm.state.cluster.update( - {"starting_member": units_requesting_start[0] if units_requesting_start else ""} - ) - logger.debug( - f"Updated starting member to {units_requesting_start[0] if units_requesting_start else ''}" - ) + for lock in [StartLock(self.charm.state), ScaleDownLock(self.charm.state)]: + lock.process() def _on_update_status(self, event: ops.UpdateStatusEvent) -> None: """Handle the update-status event.""" @@ -463,3 +436,73 @@ def _update_internal_users_password(self, secret_id: str) -> None: scope="app", component=self.charm.cluster_manager.name, ) + + def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: + """Handle removal of the data storage mount, e.g. when removing a unit.""" + # get scale down lock + scale_down_lock = ScaleDownLock(self.charm.state) + + self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.WAIT_FOR_LOCK}) + scale_down_lock.request_lock() + if not scale_down_lock.do_i_hold_lock(): + logger.debug("Waiting for lock to scale down") + event.defer() + return + + # Consider scaling to 0 if we need to clean databag + + # consider quorom when removing unit + + # if unit has primary then failover + if self.charm.sentinel_manager.get_primary_ip() == self.charm.state.bind_address: + self.charm.state.unit_server.update( + {"scale_down_state": ScaleDownState.WAIT_TO_FAILOVER} + ) + logger.debug( + "Unit with IP %s is primary, triggering failover before scale down", + self.charm.state.bind_address, + ) + try: + self.charm.sentinel_manager.failover() + logger.debug( + "Failover completed, new primary ip %s", + self.charm.sentinel_manager.get_primary_ip(), + ) + except SentinelFailoverError: + logger.error("Failed to trigger failover before scale down") + event.defer() + return + + # stop valkey and sentinel processes + self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.STOP_SERVICES}) + try: + self.charm.workload.stop() + except ValkeyServicesCouldNotBeStoppedError: + logger.error("Failed to stop Valkey services before scale down") + event.defer() + return + + # reset sentinel states on other units + self.charm.state.unit_server.update( + { + "scale_down_state": ScaleDownState.RESET_SENTINEL, + "start_state": StartState.NOT_STARTED.value, + } + ) + try: + self.charm.sentinel_manager.reset_sentinel_states() + except (ValkeyWorkloadCommandError, CannotSeeAllActiveSentinelsError): + logger.error("Failed to reset sentinel states before scale down") + event.defer() + return + + # check health after scale down + self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.HEALTH_CHECK}) + + if not self.charm.sentinel_manager.verify_expected_replica_count(): + logger.error("Not all sentinels see the expected number of replicas after scale down") + event.defer() + return + + # release lock + scale_down_lock.release_lock() diff --git a/src/literals.py b/src/literals.py index 665b182..ab41959 100644 --- a/src/literals.py +++ b/src/literals.py @@ -38,6 +38,8 @@ INTERNAL_USERS_PASSWORD_CONFIG = "system-users" INTERNAL_USERS_SECRET_LABEL_SUFFIX = "internal_users_secret" +DATA_STORAGE = "data" + # As per the valkey users spec # https://docs.google.com/document/d/1EImKKHK3wLY73-D1M2ItpHe88NHeB-Iq2M3lz7AQB7E @@ -83,3 +85,14 @@ class StartState(StrEnum): STARTING_WAITING_REPLICA_SYNC = "starting_waiting_replica_sync" ERROR_ON_START = "error_on_start" STARTED = "started" + + +class ScaleDownState(StrEnum): + """Scale down states for the service.""" + + NO_SCALE_DOWN = "" + WAIT_FOR_LOCK = "wait_for_lock" + WAIT_TO_FAILOVER = "wait_to_failover" + STOP_SERVICES = "stopped_services" + RESET_SENTINEL = "reset_sentinel" + HEALTH_CHECK = "health_check" diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index 04b3cc7..250234b 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -13,6 +13,8 @@ from common.client import ValkeyClient from common.exceptions import ( + CannotSeeAllActiveSentinelsError, + SentinelFailoverError, ValkeyWorkloadCommandError, ) from core.base_workload import WorkloadBase @@ -123,6 +125,125 @@ def is_healthy(self) -> bool: return True + def failover(self) -> None: + """Trigger a failover in the cluster.""" + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + workload=self.workload, + connect_to="sentinel", + ) + try: + client.sentinel_failover(self.state.bind_address) + except ValkeyWorkloadCommandError as e: + logger.error(f"Failed to trigger failover: {e}") + raise SentinelFailoverError from e + + def reset_sentinel_states(self) -> None: + """Reset the sentinel states on all sentinels in the cluster.""" + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + workload=self.workload, + connect_to="sentinel", + ) + + active_sentinels = [unit for unit in self.state.servers if unit.is_started] + logger.debug( + "Resetting sentinel states on %s", str([unit.unit_name for unit in active_sentinels]) + ) + for unit in active_sentinels: + try: + client.sentinel_reset_state(hostname=unit.model.private_ip) + except ValkeyWorkloadCommandError: + logger.warning( + f"Could not reset sentinel state on {unit.unit_name} ({unit.model.private_ip})." + ) + raise + + if not self.sentinel_sees_all_others(target_sentinel_ip=unit.model.private_ip): + logger.warning( + f"Sentinel at {unit.model.private_ip} does not see all other sentinels after reset." + ) + raise CannotSeeAllActiveSentinelsError( + f"Sentinel at {unit.model.private_ip} does not see all other sentinels after reset." + ) + + @retry( + wait=wait_fixed(1), + stop=stop_after_attempt(5), + retry=retry_if_result(lambda result: result is False), + retry_error_callback=lambda _: False, + ) + def sentinel_sees_all_others(self, target_sentinel_ip: str) -> bool: + """Check if the sentinel of the local unit sees all the other sentinels in the cluster.""" + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + workload=self.workload, + connect_to="sentinel", + ) + + other_active_sentinels = [ + unit.model.private_ip + for unit in self.state.servers + if unit.is_started and unit.model.private_ip != target_sentinel_ip + ] + + logger.debug( + "Checking if sentinel at %s sees all other sentinels: %s", + target_sentinel_ip, + other_active_sentinels, + ) + + for sentinel_ip in other_active_sentinels: + try: + output, _ = client.exec_cli_command( + command=["sentinel", "sentinels", PRIMARY_NAME], + hostname=target_sentinel_ip, + ) + if sentinel_ip not in output: + logger.debug( + f"Sentinel at {target_sentinel_ip} does not see sentinel at {sentinel_ip}" + ) + return False + except ValkeyWorkloadCommandError: + logger.warning( + f"Could not query sentinel at {target_sentinel_ip} for sentinel discovery." + ) + return False + return True + + def verify_expected_replica_count(self) -> bool: + """Verify that the sentinels in the cluster see the expected number of replicas.""" + client = ValkeyClient( + username=self.admin_user, + password=self.admin_password, + workload=self.workload, + connect_to="sentinel", + ) + + units_started = [unit for unit in self.state.servers if unit.is_started] + # all started servers except primary are expected to be replicas + expected_replicas = len(units_started) - 1 + logger.debug( + "Verifying expected replica count. Expected replicas: %d, started servers: %s", + expected_replicas, + str([unit.unit_name for unit in units_started]), + ) + try: + for unit in units_started: + replica_info = client.sentinel_get_replica_info(hostname=unit.model.private_ip) + if expected_replicas != (nbr_replicas := replica_info.count("name")): + logger.warning( + f"Sentinel at {unit.model.private_ip} sees {nbr_replicas} replicas, expected {expected_replicas}." + ) + return False + except ValkeyWorkloadCommandError: + logger.warning("Could not query sentinel for replica information.") + return False + return True + def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the sentinel manager's statuses.""" status_list: list[StatusObject] = self.state.statuses.get( diff --git a/src/workload_k8s.py b/src/workload_k8s.py index 97f0dac..91f0a3f 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -13,6 +13,7 @@ from common.exceptions import ( ValkeyServiceNotAliveError, + ValkeyServicesCouldNotBeStoppedError, ValkeyServicesFailedToStartError, ValkeyWorkloadCommandError, ) @@ -127,3 +128,13 @@ def exec(self, command: list[str]) -> tuple[str, str | None]: except ops.pebble.ExecError as e: logger.error("Command failed with %s, %s", e.exit_code, e.stdout) raise ValkeyWorkloadCommandError(e) + + @override + def stop(self) -> None: + try: + self.container.stop(self.valkey_service, self.sentinel_service, self.metric_service) + except ops.pebble.ChangeError as e: + logger.error("Failed to stop Valkey services: %s", e) + raise ValkeyServicesCouldNotBeStoppedError( + f"Failed to stop Valkey services: {e}" + ) from e diff --git a/src/workload_vm.py b/src/workload_vm.py index 2c3a043..b956284 100644 --- a/src/workload_vm.py +++ b/src/workload_vm.py @@ -21,6 +21,7 @@ from common.exceptions import ( ValkeyServiceNotAliveError, + ValkeyServicesCouldNotBeStoppedError, ValkeyServicesFailedToStartError, ValkeyWorkloadCommandError, ) @@ -170,3 +171,19 @@ def wait_for_services_to_be_alive(self, duration: float = 30, delay: float = 0.1 time.sleep(delay) return True + + @override + def stop(self) -> None: + try: + self.valkey.stop(services=[SNAP_SERVICE, SNAP_SENTINEL_SERVICE]) + except snap.SnapError as e: + logger.error("Failed to stop Valkey services: %s", e) + raise ValkeyServicesCouldNotBeStoppedError( + f"Failed to stop Valkey services: {e}" + ) from e + + if self.alive(): + logger.error("Valkey services are still alive after stop.") + raise ValkeyServicesCouldNotBeStoppedError( + "Valkey services are still alive after stop." + ) From ec578b7fd8505ea7ea0581efd8771e8437593142 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 20 Feb 2026 10:36:20 +0000 Subject: [PATCH 102/282] revert back is sentinel discovered argument --- src/events/base_events.py | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 8da55df..803639d 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -203,9 +203,7 @@ def _on_unit_fully_started(self, event: UnitFullyStarted) -> None: event.defer() return - if not event.is_primary and not self.charm.sentinel_manager.is_sentinel_discovered( - self.charm.state.bind_address - ): + if not event.is_primary and not self.charm.sentinel_manager.is_sentinel_discovered(): logger.info("Sentinel service not yet discovered by other units. Deferring event.") self.charm.state.unit_server.update( {"start_state": StartState.STARTING_WAITING_SENTINEL.value} @@ -449,9 +447,7 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: event.defer() return - # Consider scaling to 0 if we need to clean databag - - # consider quorom when removing unit + # TODO consider quorom when removing unit # if unit has primary then failover if self.charm.sentinel_manager.get_primary_ip() == self.charm.state.bind_address: @@ -498,7 +494,6 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: # check health after scale down self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.HEALTH_CHECK}) - if not self.charm.sentinel_manager.verify_expected_replica_count(): logger.error("Not all sentinels see the expected number of replicas after scale down") event.defer() From a14839d9137a0859ef8e8e5d7568ccf0d8c279c6 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 24 Feb 2026 05:56:30 +0000 Subject: [PATCH 103/282] statuses for scale down --- src/common/client.py | 22 ++++++- src/common/locks.py | 117 +++++++++++++++++++++++++++++++------- src/core/models.py | 16 +++++- src/events/base_events.py | 45 ++++++++++----- src/literals.py | 1 + src/managers/cluster.py | 60 ++++++++++--------- src/managers/config.py | 2 +- src/managers/sentinel.py | 14 ++--- src/statuses.py | 19 +++++++ 9 files changed, 224 insertions(+), 72 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index b72a9f6..b3b4ff6 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -136,6 +136,26 @@ def set_value(self, hostname: str, key: str, value: str) -> bool: logger.error(f"Failed to set key {key} on Valkey server at {hostname}: {e}") return False + def get_value(self, hostname: str, key: str) -> str | None: + """Get the value of a key from the Valkey server. + + Args: + hostname (str): The hostname to connect to. + key (str): The key to retrieve. + + Returns: + str | None: The value of the key if retrieved successfully, None otherwise. + """ + try: + output, err = self.exec_cli_command(["get", key], hostname=hostname) + if not output.strip(): + logger.warning(f"Key {key} not found on Valkey server at {hostname}.") + return None + return output.strip() + except ValkeyWorkloadCommandError as e: + logger.error(f"Failed to get key {key} from Valkey server at {hostname}: {e}") + return None + def is_replica_synced(self, hostname: str) -> bool: """Check if the replica is synced with the primary. @@ -335,7 +355,7 @@ def sentinel_reset_state(self, hostname: str) -> None: raise @retry( - stop=stop_after_attempt(3), + stop=stop_after_attempt(5), wait=wait_fixed(1), reraise=True, ) diff --git a/src/common/locks.py b/src/common/locks.py index d945532..6ef0ce4 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -4,10 +4,15 @@ """Collection of lock names for cluster operations.""" import logging -from abc import ABC, abstractmethod -from typing import TYPE_CHECKING +from abc import abstractmethod +from typing import TYPE_CHECKING, Protocol, override + +from common.client import ValkeyClient +from core.cluster_state import ClusterState +from literals import CharmUsers if TYPE_CHECKING: + from charm import ValkeyCharm from core.cluster_state import ClusterState from core.models import ValkeyServer @@ -15,7 +20,32 @@ logger = logging.getLogger(__name__) -class Lock(ABC): +class Lockable(Protocol): + """Protocol for lockable operations.""" + + @property + def name(self) -> str: + """Get the name of the lock.""" + return self.__class__.__name__.lower() + + @abstractmethod + def request_lock(self) -> None: + """Request the lock for the local unit.""" + raise NotImplementedError + + @abstractmethod + def release_lock(self) -> None: + """Release the lock from the local unit.""" + raise NotImplementedError + + @property + @abstractmethod + def do_i_hold_lock(self) -> bool: + """Check if the local unit holds the lock.""" + raise NotImplementedError + + +class DataBagLock(Lockable): """Base class for locks.""" unit_request_lock_atr_name: str @@ -24,11 +54,6 @@ class Lock(ABC): def __init__(self, state: "ClusterState") -> None: self.state = state - @property - def name(self) -> str: - """Get the name of the lock.""" - return self.__class__.__name__.lower() - @property def units_requesting_lock(self) -> list[str]: """Get the list of units requesting the start lock.""" @@ -60,8 +85,9 @@ def unit_with_lock(self) -> "ValkeyServer | None": @abstractmethod def is_lock_free_to_give(self) -> bool: """Check if the unit with the lock has completed its operation.""" - pass + raise NotImplementedError + @property def do_i_hold_lock(self) -> bool: """Check if the local unit holds the start lock.""" return self.state.unit_server.unit_name == getattr( @@ -109,7 +135,7 @@ def process(self) -> None: ) -class StartLock(Lock): +class StartLock(DataBagLock): """Lock for starting operations.""" unit_request_lock_atr_name = "request_start_lock" @@ -126,18 +152,69 @@ def is_lock_free_to_give(self) -> bool: ) -class ScaleDownLock(Lock): - """Lock for scale down operations.""" +class ScaleDownLock(Lockable): + """Lock for scale down operations. - unit_request_lock_atr_name = "request_scale_down_lock" - member_with_lock_atr_name = "scale_down_member" + This will use valkey to store the lock state and will check if the unit with the lock has completed its scale down operation + """ + + lock_key = "scale_down_lock" + + def __init__(self, charm: "ValkeyCharm") -> None: + self.charm = charm @property - def is_lock_free_to_give(self) -> bool: - """Check if the unit with the scale down lock has completed its operation.""" - scaling_down_unit = self.unit_with_lock + def client(self) -> ValkeyClient: + """Get a ValkeyClient instance.""" + return ValkeyClient( + username=CharmUsers.VALKEY_ADMIN.value, + password=self.charm.state.unit_server.valkey_admin_password, + workload=self.charm.workload, + ) + + @property + def unit_with_lock(self) -> str | None: + """Get the unit that currently holds the start lock.""" + return self.client.get_value(self.charm.sentinel_manager.get_primary_ip(), self.lock_key) + + @override + def request_lock(self) -> None: + """Request the lock for the local unit.""" + if not self.unit_with_lock: + self.client.set_value( + hostname=self.charm.sentinel_manager.get_primary_ip(), + key=self.lock_key, + value=self.charm.state.unit_server.unit_name, + ) + logger.info(f"{self.charm.state.unit_server.unit_name} requested {self.name} lock.") + else: + logger.info( + f"{self.charm.state.unit_server.unit_name} attempted to request {self.name} lock, but it is currently held by {self.unit_with_lock}." + ) + + @property + def do_i_hold_lock(self) -> bool: + """Check if the local unit holds the lock.""" return ( - not self.state.cluster.model.scale_down_member - or not scaling_down_unit - or scaling_down_unit.model.request_scale_down_lock is False + self.unit_with_lock is not None + and self.unit_with_lock == self.charm.state.unit_server.unit_name ) + + def release_lock(self) -> None: + """Release the lock from the local unit.""" + if self.do_i_hold_lock: + self.client.set_value( + hostname=self.charm.sentinel_manager.get_primary_ip(), + key=self.lock_key, + value="", + ) + logger.info(f"{self.charm.state.unit_server.unit_name} released {self.name} lock.") + else: + logger.info( + f"{self.charm.state.unit_server.unit_name} attempted to release {self.name} lock, but it is currently held by {self.unit_with_lock if self.unit_with_lock else 'no one'}." + ) + + @property + def is_lock_free_to_give(self) -> bool: + """Check if the unit with the lock has completed its operation.""" + return not self.unit_with_lock diff --git a/src/core/models.py b/src/core/models.py index 5a01972..3946b7b 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -18,7 +18,7 @@ from pydantic import Field from typing_extensions import Annotated -from literals import CharmUsers, StartState +from literals import CharmUsers, ScaleDownState, StartState logger = logging.getLogger(__name__) @@ -123,6 +123,20 @@ def is_started(self) -> bool: """Check if the unit has started.""" return self.model.start_state == StartState.STARTED.value if self.model else False + @property + def is_being_removed(self) -> bool: + """Check if the unit is being removed from the cluster.""" + return ( + self.model.scale_down_state != ScaleDownState.NO_SCALE_DOWN.value + if self.model + else False + ) + + @property + def is_active(self) -> bool: + """Check if the unit is started and not being removed.""" + return self.is_started and not self.is_being_removed + @property def valkey_admin_password(self) -> str: """Retrieve the password for the valkey admin user.""" diff --git a/src/events/base_events.py b/src/events/base_events.py index 803639d..57ff01b 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -6,6 +6,7 @@ import logging import socket +import time from typing import TYPE_CHECKING import ops @@ -33,7 +34,7 @@ StartState, Substrate, ) -from statuses import CharmStatuses, ClusterStatuses, StartStatuses +from statuses import CharmStatuses, ClusterStatuses, ScaleDownStatuses, StartStatuses if TYPE_CHECKING: from charm import ValkeyCharm @@ -122,7 +123,7 @@ def _on_start(self, event: ops.StartEvent) -> None: self.charm.state.unit_server.update({"start_state": StartState.WAITING_TO_START.value}) start_lock.request_lock() - if not start_lock.do_i_hold_lock(): + if not start_lock.do_i_hold_lock: logger.info("Waiting for lock to start") event.defer() return @@ -231,7 +232,7 @@ def _on_peer_relation_changed(self, event: ops.RelationChangedEvent) -> None: if not self.charm.unit.is_leader(): return - for lock in [StartLock(self.charm.state), ScaleDownLock(self.charm.state)]: + for lock in [StartLock(self.charm.state)]: lock.process() def _on_update_status(self, event: ops.UpdateStatusEvent) -> None: @@ -438,17 +439,34 @@ def _update_internal_users_password(self, secret_id: str) -> None: def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: """Handle removal of the data storage mount, e.g. when removing a unit.""" # get scale down lock - scale_down_lock = ScaleDownLock(self.charm.state) + scale_down_lock = ScaleDownLock(self.charm) self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.WAIT_FOR_LOCK}) + self.charm.status.set_running_status( + ScaleDownStatuses.WAIT_FOR_LOCK.value, + scope="unit", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) scale_down_lock.request_lock() - if not scale_down_lock.do_i_hold_lock(): + while not scale_down_lock.do_i_hold_lock: logger.debug("Waiting for lock to scale down") - event.defer() - return + time.sleep(5) + self.charm.state.statuses.delete( + ScaleDownStatuses.WAIT_FOR_LOCK.value, + scope="unit", + component=self.charm.cluster_manager.name, + ) # TODO consider quorom when removing unit + self.charm.status.set_running_status( + ScaleDownStatuses.SCALING_DOWN.value, + scope="unit", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + # if unit has primary then failover if self.charm.sentinel_manager.get_primary_ip() == self.charm.state.bind_address: self.charm.state.unit_server.update( @@ -466,8 +484,7 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: ) except SentinelFailoverError: logger.error("Failed to trigger failover before scale down") - event.defer() - return + raise # stop valkey and sentinel processes self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.STOP_SERVICES}) @@ -475,8 +492,7 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: self.charm.workload.stop() except ValkeyServicesCouldNotBeStoppedError: logger.error("Failed to stop Valkey services before scale down") - event.defer() - return + raise # reset sentinel states on other units self.charm.state.unit_server.update( @@ -489,15 +505,14 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: self.charm.sentinel_manager.reset_sentinel_states() except (ValkeyWorkloadCommandError, CannotSeeAllActiveSentinelsError): logger.error("Failed to reset sentinel states before scale down") - event.defer() - return + raise # check health after scale down self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.HEALTH_CHECK}) if not self.charm.sentinel_manager.verify_expected_replica_count(): logger.error("Not all sentinels see the expected number of replicas after scale down") - event.defer() - return + raise # release lock + self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY}) scale_down_lock.release_lock() diff --git a/src/literals.py b/src/literals.py index ab41959..dbe7383 100644 --- a/src/literals.py +++ b/src/literals.py @@ -96,3 +96,4 @@ class ScaleDownState(StrEnum): STOP_SERVICES = "stopped_services" RESET_SENTINEL = "reset_sentinel" HEALTH_CHECK = "health_check" + GOING_AWAY = "going_away" diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 5076ff0..3b6d2b4 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -18,8 +18,8 @@ ) from core.base_workload import WorkloadBase from core.cluster_state import ClusterState -from literals import CharmUsers, StartState -from statuses import CharmStatuses, StartStatuses +from literals import CharmUsers, ScaleDownState, StartState +from statuses import CharmStatuses, ScaleDownStatuses, StartStatuses logger = logging.getLogger(__name__) @@ -119,38 +119,44 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje if not self.state.cluster.model or not self.state.unit_server.model: return status_list or [CharmStatuses.ACTIVE_IDLE.value] + if start_status := self._get_start_status(): + status_list.append(start_status) + + if scale_down_status := self._get_scale_down_status(): + status_list.append(scale_down_status) + + return status_list or [CharmStatuses.ACTIVE_IDLE.value] + + def _get_start_status(self) -> StatusObject | None: + """Get the current start status of the unit.""" match self.state.unit_server.model.start_state: case StartState.NOT_STARTED.value: - status_list.append( - StartStatuses.SERVICE_NOT_STARTED.value, - ) + if ( + self.state.unit_server.model.scale_down_state + == ScaleDownState.NO_SCALE_DOWN.value + ): + return StartStatuses.SERVICE_NOT_STARTED.value case StartState.WAITING_FOR_PRIMARY_START.value: - status_list.append( - StartStatuses.WAITING_FOR_PRIMARY_START.value, - ) + return StartStatuses.WAITING_FOR_PRIMARY_START.value case StartState.WAITING_TO_START.value: - status_list.append( - StartStatuses.WAITING_TO_START.value, - ) + return StartStatuses.WAITING_TO_START.value case StartState.CONFIGURATION_ERROR.value: - status_list.append( - StartStatuses.CONFIGURATION_ERROR.value, - ) + return StartStatuses.CONFIGURATION_ERROR.value case StartState.STARTING_WAITING_VALKEY.value: - status_list.append( - StartStatuses.SERVICE_STARTING.value, - ) + return StartStatuses.SERVICE_STARTING.value case StartState.STARTING_WAITING_SENTINEL.value: - status_list.append( - StartStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value, - ) + return StartStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value case StartState.STARTING_WAITING_REPLICA_SYNC.value: - status_list.append( - StartStatuses.WAITING_FOR_REPLICA_SYNC.value, - ) + return StartStatuses.WAITING_FOR_REPLICA_SYNC.value case StartState.ERROR_ON_START.value: - status_list.append( - StartStatuses.ERROR_ON_START.value, - ) + return StartStatuses.ERROR_ON_START.value - return status_list or [CharmStatuses.ACTIVE_IDLE.value] + return None + + def _get_scale_down_status(self) -> StatusObject | None: + """Get the current scale down status of the unit.""" + match self.state.unit_server.model.scale_down_state: + case ScaleDownState.GOING_AWAY.value: + return ScaleDownStatuses.GOING_AWAY.value + + return None diff --git a/src/managers/config.py b/src/managers/config.py index 5c74c80..6966e66 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -94,7 +94,7 @@ def _generate_replica_config(self, primary_ip: str) -> dict[str, str]: CharmUsers.VALKEY_REPLICA.value, "" ), } - if primary_ip != self.state.unit_server.model.private_ip: + if primary_ip != self.state.bind_address: # set replicaof logger.debug("Setting replicaof to primary %s", primary_ip) replica_config["replicaof"] = f"{primary_ip} {CLIENT_PORT}" diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index 250234b..ec311dc 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -51,11 +51,11 @@ def admin_password(self) -> str: ) def is_sentinel_discovered(self) -> bool: """Check if the sentinel of the local unit was discovered by the other sentinels in the cluster.""" - # list of active sentinels: units with started flag true + # list of active sentinels: units with started flag true and not being removed active_sentinels = [ unit.model.private_ip for unit in self.state.servers - if unit.is_started and unit.model.private_ip != self.state.unit_server.model.private_ip + if unit.is_active and unit.model.private_ip != self.state.bind_address ] client = ValkeyClient( @@ -71,7 +71,7 @@ def is_sentinel_discovered(self) -> bool: command=["sentinel", "sentinels", PRIMARY_NAME], hostname=sentinel_ip, ) - if self.state.unit_server.model.private_ip not in output: + if self.state.bind_address not in output: logger.info(f"Sentinel at {sentinel_ip} has not discovered this sentinel") return False except ValkeyWorkloadCommandError: @@ -81,7 +81,7 @@ def is_sentinel_discovered(self) -> bool: def get_primary_ip(self) -> str | None: """Get the IP address of the primary node in the cluster.""" - started_servers = [unit for unit in self.state.servers if unit.is_started] + started_servers = [unit for unit in self.state.servers if unit.is_active] client = ValkeyClient( username=self.admin_user, @@ -148,7 +148,7 @@ def reset_sentinel_states(self) -> None: connect_to="sentinel", ) - active_sentinels = [unit for unit in self.state.servers if unit.is_started] + active_sentinels = [unit for unit in self.state.servers if unit.is_active] logger.debug( "Resetting sentinel states on %s", str([unit.unit_name for unit in active_sentinels]) ) @@ -187,7 +187,7 @@ def sentinel_sees_all_others(self, target_sentinel_ip: str) -> bool: other_active_sentinels = [ unit.model.private_ip for unit in self.state.servers - if unit.is_started and unit.model.private_ip != target_sentinel_ip + if unit.is_active and unit.model.private_ip != target_sentinel_ip ] logger.debug( @@ -223,7 +223,7 @@ def verify_expected_replica_count(self) -> bool: connect_to="sentinel", ) - units_started = [unit for unit in self.state.servers if unit.is_started] + units_started = [unit for unit in self.state.servers if unit.is_active] # all started servers except primary are expected to be replicas expected_replicas = len(units_started) - 1 logger.debug( diff --git a/src/statuses.py b/src/statuses.py index f0a677b..d7faa1e 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -73,3 +73,22 @@ class StartStatuses(Enum): status="blocked", message="Error occurred during service start, check logs for details", ) + + +class ScaleDownStatuses(Enum): + """Collection of possible statuses related to scale down operations.""" + + WAIT_FOR_LOCK = StatusObject( + status="maintenance", + message="Waiting for lock to perform scale down operations...", + running="async", + ) + SCALING_DOWN = StatusObject( + status="maintenance", + message="Performing scale down operations...", + running="async", + ) + GOING_AWAY = StatusObject( + status="maintenance", + message="Waiting for unit to be removed by juju...", + ) From 487ec644bc0bbf5e7b072316f472959bd32e0487 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 25 Feb 2026 08:32:34 +0000 Subject: [PATCH 104/282] refactor client tp separate valkey and sentinel and use json where possible --- src/common/client.py | 395 ++++++++++++++++++++----------------------- 1 file changed, 185 insertions(+), 210 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index b3b4ff6..5e43c3b 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -3,10 +3,11 @@ """ValkeyClient utility class to connect to valkey servers.""" +import json import logging -from typing import Literal +from typing import Any -from tenacity import retry, stop_after_attempt, wait_fixed +from tenacity import retry, retry_if_result, stop_after_attempt, wait_fixed from common.exceptions import ValkeyWorkloadCommandError from core.base_workload import WorkloadBase @@ -15,53 +16,96 @@ logger = logging.getLogger(__name__) -class ValkeyClient: +class CliClient: """Handle valkey client connections.""" + port: int = CLIENT_PORT + def __init__( self, username: str, password: str, workload: WorkloadBase, - connect_to: Literal["valkey", "sentinel"] = "valkey", ): self.username = username self.password = password self.workload = workload - self.connect_to = connect_to def exec_cli_command( self, command: list[str], hostname: str, - ) -> tuple[str, str | None]: + json_output: bool = True, + ) -> Any: """Execute a Valkey CLI command on the server. Args: command (list[str]): The CLI command to execute, as a list of arguments. hostname (str): The hostname to connect to. + json_output (bool): Whether to parse the output as JSON. Returns: - tuple[str, str | None]: The standard output and standard error from the command execution. + Any: The output from the command execution, parsed as JSON if requested. Raises: ValkeyWorkloadCommandError: If the CLI command fails to execute. """ - port = CLIENT_PORT if self.connect_to == "valkey" else SENTINEL_PORT - cli_command: list[str] = [ - self.workload.cli, - "-h", - hostname, - "-p", - str(port), - "--user", - self.username, - "--pass", - self.password, - ] + command - logger.debug(f"Executing CLI command on {hostname}: {cli_command}") + port = self.port + cli_command: list[str] = ( + [ + self.workload.cli, + "--no-auth-warning", + "-h", + hostname, + "-p", + str(port), + "--user", + self.username, + "--pass", + self.password, + ] + + (["--json"] if json_output else []) + + command + ) output, error = self.workload.exec(cli_command) - return output.strip(), error + output = output.strip() + if error: + logger.error( + "Error executing CLI command on Valkey server at %s: stderr: %s", + hostname, + error, + ) + raise ValkeyWorkloadCommandError( + f"Error executing CLI command on Valkey server at {hostname}: stderr: {error}" + ) + + if json_output: + try: + output = json.loads(output) + except json.JSONDecodeError as e: + logger.error( + "Failed to parse JSON output from CLI command on Valkey server at %s: %s", + hostname, + output, + ) + raise ValkeyWorkloadCommandError( + f"Failed to parse JSON output from CLI command on Valkey server at {hostname}: {output}" + ) from e + return output + + +class ValkeyClient(CliClient): + """Handle valkey client connections.""" + + port: int = CLIENT_PORT + + def __init__( + self, + username: str, + password: str, + workload: WorkloadBase, + ): + super().__init__(username, password, workload) def ping(self, hostname: str) -> bool: """Ping the Valkey server to check if it's responsive. @@ -73,8 +117,7 @@ def ping(self, hostname: str) -> bool: bool: True if the server responds to the ping command, False otherwise. """ try: - output, _ = self.exec_cli_command(["ping"], hostname=hostname) - return "PONG" in output + return "PONG" in self.exec_cli_command(["ping"], hostname=hostname, json_output=False) except ValkeyWorkloadCommandError: return False @@ -90,7 +133,10 @@ def get_persistence_info(self, hostname: str) -> dict[str, str] | None: Raises: ValkeyWorkloadCommandError: If the CLI command fails to execute. """ - output, _ = self.exec_cli_command(["info", "persistence"], hostname=hostname) + # command does not have a JSON output format, so we need to parse the raw output + output = self.exec_cli_command( + ["info", "persistence"], hostname=hostname, json_output=False + ) values = {} if not output.strip(): logger.warning(f"No persistence info found on Valkey server at {hostname}.") @@ -119,24 +165,13 @@ def set_value(self, hostname: str, key: str, value: str) -> bool: Returns: bool: True if the command executed successfully, False otherwise. + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. """ - try: - output, err = self.exec_cli_command(["set", key, value], hostname=hostname) - if output.strip() == "OK": - return True - logger.error( - "Failed to set key %s on Valkey server at %s: stdout: %s, stderr: %s", - key, - hostname, - output, - err, - ) - return False - except ValkeyWorkloadCommandError as e: - logger.error(f"Failed to set key {key} on Valkey server at {hostname}: {e}") - return False + return self.exec_cli_command(["set", key, value], hostname=hostname) == "OK" - def get_value(self, hostname: str, key: str) -> str | None: + def get_value(self, hostname: str, key: str) -> str: """Get the value of a key from the Valkey server. Args: @@ -144,17 +179,12 @@ def get_value(self, hostname: str, key: str) -> str | None: key (str): The key to retrieve. Returns: - str | None: The value of the key if retrieved successfully, None otherwise. + str: The value of the key if retrieved successfully. + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. """ - try: - output, err = self.exec_cli_command(["get", key], hostname=hostname) - if not output.strip(): - logger.warning(f"Key {key} not found on Valkey server at {hostname}.") - return None - return output.strip() - except ValkeyWorkloadCommandError as e: - logger.error(f"Failed to get key {key} from Valkey server at {hostname}: {e}") - return None + return self.exec_cli_command(["get", key], hostname=hostname) def is_replica_synced(self, hostname: str) -> bool: """Check if the replica is synced with the primary. @@ -164,20 +194,12 @@ def is_replica_synced(self, hostname: str) -> bool: Returns: bool: True if the replica is synced with the primary, False otherwise. + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. """ - try: - output, _ = self.exec_cli_command(["role"], hostname=hostname) - output_parts = output.strip().split() - return ( - bool(output_parts) - and output_parts[0] == "slave" - and output_parts[3] == "connected" - ) - except ValkeyWorkloadCommandError: - logger.warning( - "Could not determine replica sync status from Valkey server at %s.", hostname - ) - return False + output = self.exec_cli_command(["role"], hostname=hostname) + return output[0] == "slave" and output[3] == "connected" def config_set(self, hostname: str, parameter: str, value: str) -> bool: """Set a runtime configuration parameter on the Valkey server. @@ -189,26 +211,15 @@ def config_set(self, hostname: str, parameter: str, value: str) -> bool: Returns: bool: True if the command executed successfully, False otherwise. + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. """ - try: - output, err = self.exec_cli_command( - ["config", "set", parameter, value], hostname=hostname - ) - if output.strip() == "OK": - return True - logger.error( - "Failed to set config %s on Valkey server at %s: stdout: %s, stderr: %s", - parameter, - hostname, - output, - err, - ) - return False - except ValkeyWorkloadCommandError as e: - logger.error(f"Failed to set config {parameter} on Valkey server at {hostname}: {e}") - return False + return ( + self.exec_cli_command(["config", "set", parameter, value], hostname=hostname) == "OK" + ) - def load_acl(self, hostname: str) -> bool: + def acl_load(self, hostname: str) -> bool: """Load the ACL file into the Valkey server. Args: @@ -216,88 +227,59 @@ def load_acl(self, hostname: str) -> bool: Returns: bool: True if the ACL file was loaded successfully, False otherwise. + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. """ - try: - output, err = self.exec_cli_command(["acl", "load"], hostname=hostname) - if output.strip() == "OK": - return True - logger.error( - "Failed to load ACL file on Valkey server at %s: stdout: %s, stderr: %s", - hostname, - output, - err, - ) - return False - except ValkeyWorkloadCommandError as e: - logger.error(f"Failed to load ACL file on Valkey server at {hostname}: {e}") - return False + return self.exec_cli_command(["acl", "load"], hostname=hostname) == "OK" + + +class SentinelClient(CliClient): + """Handle sentinel-specific client connections.""" + + port: int = SENTINEL_PORT + + def __init__( + self, + username: str, + password: str, + workload: WorkloadBase, + ): + super().__init__(username, password, workload) - def sentinel_get_primary_ip(self, hostname: str) -> str | None: + def get_primary_ip(self, hostname: str) -> str: """Get the primary IP address from the sentinel. Args: hostname (str): The hostname to connect to. Returns: - str | None: The primary IP address if retrieved successfully, None otherwise. + str: The primary IP address if retrieved successfully. + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. """ - if not self.connect_to == "sentinel": - logger.error( - "Attempted to get primary IP from sentinel while client is configured to connect to valkey." - ) - raise ValueError("Client is not configured to connect to sentinel.") - try: - output, _ = self.exec_cli_command( - command=["sentinel", "get-master-addr-by-name", PRIMARY_NAME], hostname=hostname - ) - output_parts = output.strip().split() - if len(output_parts) != 2: - logger.error( - "Unexpected output format when getting primary IP from sentinel at %s: %s", - hostname, - output, - ) - return None - return output_parts[0] - except ValkeyWorkloadCommandError as e: - logger.error(f"Failed to get primary IP from sentinel at {hostname}: {e}") - return None + return self.exec_cli_command( + command=["sentinel", "get-primary-addr-by-name", PRIMARY_NAME], hostname=hostname + )[0] - def sentinel_get_master_info(self, hostname: str) -> dict[str, str] | None: - """Get the master info from the sentinel. + def get_primary_info(self, hostname: str) -> dict[str, str]: + r"""Get the primary info from the sentinel. Args: hostname (str): The hostname to connect to. Returns: - dict[str, str] | None: The master info if retrieved successfully, None otherwise. + dict[str, str]: The primary info if retrieved successfully. + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. """ - if not self.connect_to == "sentinel": - logger.error( - "Attempted to get master info from sentinel while client is configured to connect to valkey." - ) - raise ValueError("Client is not configured to connect to sentinel.") - try: - output, _ = self.exec_cli_command( - command=["sentinel", "master", PRIMARY_NAME], hostname=hostname - ) - if not output.strip(): - logger.warning(f"No master info found in sentinel at {hostname}.") - return None - info_parts = output.strip().split() - if len(info_parts) % 2 != 0: - logger.error( - "Unexpected output format when getting master info from sentinel at %s: %s", - hostname, - output, - ) - return None - return {info_parts[i]: info_parts[i + 1] for i in range(0, len(info_parts), 2)} - except ValkeyWorkloadCommandError as e: - logger.error(f"Failed to get master info from sentinel at {hostname}: {e}") - return None + return self.exec_cli_command( + command=["sentinel", "primary", PRIMARY_NAME], hostname=hostname + ) - def sentinel_failover(self, hostname: str): + def trigger_failover(self, hostname: str) -> bool: """Trigger a failover through the sentinel. Args: @@ -305,90 +287,83 @@ def sentinel_failover(self, hostname: str): Returns: bool: True if the failover command was executed successfully, False otherwise. + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. """ - if not self.connect_to == "sentinel": - logger.error( - "Attempted to trigger failover through sentinel while client is configured to connect to valkey." - ) - raise ValueError("Client is not configured to connect to sentinel.") - try: - output, err = self.exec_cli_command( + return ( + self.exec_cli_command( command=["sentinel", "failover", PRIMARY_NAME, "coordinated"], hostname=hostname, ) - if "OK" not in output.strip(): - logger.error( - "Failed to trigger failover through sentinel at %s: stdout: %s, stderr: %s", - hostname, - output, - err, - ) - raise ValkeyWorkloadCommandError( - f"Failed to trigger failover through sentinel at {hostname}: stdout, stderr: {(output, err)}" - ) - except ValkeyWorkloadCommandError as e: - logger.error(f"Failed to trigger failover through sentinel at {hostname}: {e}") - raise + == "OK" + ) - def sentinel_reset_state(self, hostname: str) -> None: + @retry( + stop=stop_after_attempt(5), + wait=wait_fixed(1), + retry=retry_if_result(lambda in_progress: in_progress), + retry_error_callback=lambda _: True, + ) + def is_failover_in_progress(self, hostname: str) -> bool: + """Check if a failover is in progress through the sentinel. + + Args: + hostname (str): The hostname to connect to. + + Returns: + bool: True if a failover is in progress, False otherwise. + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. + """ + return "failover_in_progress" in self.get_primary_info(hostname=hostname).get("flags", "") + + def reset(self, hostname: str) -> None: """Reset the sentinel state for the primary. Args: hostname (str): The hostname to connect to. + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output """ - if not self.connect_to == "sentinel": - logger.error( - "Attempted to reset sentinel state through sentinel while client is configured to connect to valkey." - ) - raise ValueError("Client is not configured to connect to sentinel.") - try: - output, err = self.exec_cli_command( - command=["sentinel", "reset", PRIMARY_NAME], - hostname=hostname, - ) - if output != "1": - raise ValkeyWorkloadCommandError( - f"Failed to reset sentinel state through sentinel at {hostname}: stdout, stderr: {(output, err)}" - ) - except ValkeyWorkloadCommandError as e: - logger.error(f"Failed to reset sentinel state through sentinel at {hostname}: {e}") - raise + self.exec_cli_command( + command=["sentinel", "reset", PRIMARY_NAME], + hostname=hostname, + ) @retry( stop=stop_after_attempt(5), wait=wait_fixed(1), reraise=True, ) - def sentinel_get_replica_info(self, hostname: str) -> str: + def replicas_primary(self, hostname: str) -> list[dict[str, str]]: """Get the replicas information of the primary from sentinel. Args: hostname (str): The hostname to connect to. Returns: - str | None: The output of the "sentinel replicas" command if retrieved successfully, None otherwise. + (list[dict[str, str]]): The list of replicas with their information. """ - if not self.connect_to == "sentinel": - logger.error( - "Attempted to get replica info from sentinel while client is configured to connect to valkey." - ) - raise ValueError("Client is not configured to connect to sentinel.") - try: - output, err = self.exec_cli_command( - command=["sentinel", "replicas", PRIMARY_NAME], - hostname=hostname, - ) - logger.debug( - "Output of 'sentinel replicas' command from sentinel at %s: stdout, stderr: %s", - hostname, - (output, err), - ) - if not output.strip(): - logger.warning(f"No replica info found in sentinel at {hostname}.") - raise ValkeyWorkloadCommandError( - f"No replica info found in sentinel at {hostname}." - ) - return output.strip() - except ValkeyWorkloadCommandError as e: - logger.error(f"Failed to get replica info from sentinel at {hostname}: {e}") - raise + return self.exec_cli_command( + command=["sentinel", "replicas", PRIMARY_NAME], + hostname=hostname, + ) + + def sentinels_primary(self, hostname: str) -> list[dict[str, str]]: + """Get the list of sentinels that see the same primary from the sentinel. + + Args: + hostname (str): The hostname to connect to. + + Returns: + (list[dict[str, str]]): result of `sentinel sentinels primary` structured into a list of dicts + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. + """ + return self.exec_cli_command( + command=["sentinel", "sentinels", PRIMARY_NAME], hostname=hostname + ) From b300ccd63aa7682567ce7314135e64741debc7ff Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 25 Feb 2026 08:32:53 +0000 Subject: [PATCH 105/282] only recompute model when writing to databag --- src/core/models.py | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) diff --git a/src/core/models.py b/src/core/models.py index 3946b7b..d8655ef 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -66,6 +66,7 @@ def __init__( self.relation = relation self.data_interface = data_interface self.component = component + self.model = self.data_interface.build_model(self.relation.id) if self.relation else None def update(self, items: dict[str, Any]) -> None: """Write to relation data.""" @@ -78,14 +79,13 @@ def update(self, items: dict[str, Any]) -> None: delete_fields = [key for key in items if not items[key]] update_content = {k: items[k] for k in items if k not in delete_fields} - model = self.data_interface.build_model(self.relation.id) for field, value in update_content.items(): - setattr(model, field.replace("-", "_"), value) + setattr(self.model, field.replace("-", "_"), value) for field in delete_fields: - setattr(model, field.replace("-", "_"), None) + setattr(self.model, field.replace("-", "_"), None) - self.data_interface.write_model(self.relation.id, model) + self.data_interface.write_model(self.relation.id, self.model) @final @@ -103,11 +103,6 @@ def __init__( self.data_interface = data_interface self.unit = component - @property - def model(self) -> PeerUnitModel | None: - """The peer relation model for this unit.""" - return self.data_interface.build_model(self.relation.id) if self.relation else None - @property def unit_id(self) -> int: """The id of the unit from the unit name.""" @@ -159,11 +154,6 @@ def __init__( self.app = component self.data_interface = data_interface - @property - def model(self) -> PeerAppModel | None: - """The peer relation model for this application.""" - return self.data_interface.build_model(self.relation.id) if self.relation else None - @property def internal_users_credentials(self) -> dict[str, str]: """Retrieve the credentials for the internal admin users.""" From 40789bfe6dd89649e751f85f8b44d6b405c7fdaa Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 25 Feb 2026 11:53:07 +0000 Subject: [PATCH 106/282] client refactoring and added delief --- src/common/client.py | 48 +++++++++++++++++++++++++++++++++++++------- 1 file changed, 41 insertions(+), 7 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index 5e43c3b..0ad7e5d 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -155,13 +155,14 @@ def get_persistence_info(self, hostname: str) -> dict[str, str] | None: values[values_parts[0]] = values_parts[1] return values - def set_value(self, hostname: str, key: str, value: str) -> bool: + def set(self, hostname: str, key: str, value: str, additional_args: list[str] = []) -> bool: """Set a key-value pair on the Valkey server. Args: hostname (str): The hostname to connect to. key (str): The key to set. value (str): The value to set for the key. + additional_args (list[str]): Additional arguments to include in the CLI command. Default is an empty list. Returns: bool: True if the command executed successfully, False otherwise. @@ -169,9 +170,11 @@ def set_value(self, hostname: str, key: str, value: str) -> bool: Raises: ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. """ - return self.exec_cli_command(["set", key, value], hostname=hostname) == "OK" + return ( + self.exec_cli_command(["set", key, value] + additional_args, hostname=hostname) == "OK" + ) - def get_value(self, hostname: str, key: str) -> str: + def get(self, hostname: str, key: str) -> str: """Get the value of a key from the Valkey server. Args: @@ -186,6 +189,22 @@ def get_value(self, hostname: str, key: str) -> str: """ return self.exec_cli_command(["get", key], hostname=hostname) + def delifeq(self, hostname: str, key: str, value: str) -> str: + """Delete a key from the Valkey server if it is equal to a specific value. + + Args: + hostname (str): The hostname to connect to. + key (str): The key to delete if the value matches. + value (str): The value to compare against before deleting the key. + + Returns: + str: The result of the delifeq command. + + Raises: + ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. + """ + return self.exec_cli_command(["delifeq", key, value], hostname=hostname, json_output=False) + def is_replica_synced(self, hostname: str) -> bool: """Check if the replica is synced with the primary. @@ -247,6 +266,20 @@ def __init__( ): super().__init__(username, password, workload) + def ping(self, hostname: str) -> bool: + """Ping the Valkey server to check if it's responsive. + + Args: + hostname (str): The hostname to connect to. + + Returns: + bool: True if the server responds to the ping command, False otherwise. + """ + try: + return "PONG" in self.exec_cli_command(["ping"], hostname=hostname, json_output=False) + except ValkeyWorkloadCommandError: + return False + def get_primary_ip(self, hostname: str) -> str: """Get the primary IP address from the sentinel. @@ -270,7 +303,7 @@ def get_primary_info(self, hostname: str) -> dict[str, str]: hostname (str): The hostname to connect to. Returns: - dict[str, str]: The primary info if retrieved successfully. + (dict[str, str]): The primary info if retrieved successfully. Raises: ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. @@ -347,10 +380,11 @@ def replicas_primary(self, hostname: str) -> list[dict[str, str]]: Returns: (list[dict[str, str]]): The list of replicas with their information. """ - return self.exec_cli_command( - command=["sentinel", "replicas", PRIMARY_NAME], - hostname=hostname, + replicas = self.exec_cli_command( + command=["sentinel", "replicas", PRIMARY_NAME], hostname=hostname ) + logger.debug("Retrieved replicas information from sentinel at %s: %s", hostname, replicas) + return replicas def sentinels_primary(self, hostname: str) -> list[dict[str, str]]: """Get the list of sentinels that see the same primary from the sentinel. From 46cb2a93ab18c745423519e253a1d0f8ec12bf44 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 25 Feb 2026 11:53:35 +0000 Subject: [PATCH 107/282] refactor locks to adhere to ux of advanced rollingops --- src/common/exceptions.py | 4 ++ src/common/locks.py | 97 +++++++++++++++++++++++++++------------- 2 files changed, 71 insertions(+), 30 deletions(-) diff --git a/src/common/exceptions.py b/src/common/exceptions.py index 2936558..ed8fa4d 100644 --- a/src/common/exceptions.py +++ b/src/common/exceptions.py @@ -20,6 +20,10 @@ class ValkeyConfigSetError(ValkeyClientError): """Custom Exception if setting configuration on valkey cluster fails.""" +class ValkeyCannotGetPrimaryIPError(ValkeyClientError): + """Custom Exception if the primary IP cannot be determined from the sentinels.""" + + class ValkeyWorkloadCommandError(Exception): """Custom Exception if any workload-related command fails.""" diff --git a/src/common/locks.py b/src/common/locks.py index 6ef0ce4..9b31a4b 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -4,10 +4,12 @@ """Collection of lock names for cluster operations.""" import logging +import time from abc import abstractmethod from typing import TYPE_CHECKING, Protocol, override from common.client import ValkeyClient +from common.exceptions import ValkeyWorkloadCommandError from core.cluster_state import ClusterState from literals import CharmUsers @@ -29,12 +31,12 @@ def name(self) -> str: return self.__class__.__name__.lower() @abstractmethod - def request_lock(self) -> None: + def request_lock(self) -> bool: """Request the lock for the local unit.""" raise NotImplementedError @abstractmethod - def release_lock(self) -> None: + def release_lock(self) -> bool: """Release the lock from the local unit.""" raise NotImplementedError @@ -94,7 +96,7 @@ def do_i_hold_lock(self) -> bool: self.state.cluster.model, self.member_with_lock_atr_name, "" ) - def request_lock(self) -> None: + def request_lock(self) -> bool: """Request the lock for the local unit.""" self.state.unit_server.update( { @@ -107,7 +109,9 @@ def request_lock(self) -> None: ) self.process() - def release_lock(self) -> None: + return self.do_i_hold_lock + + def release_lock(self) -> bool: """Release the lock from the local unit.""" self.state.unit_server.update( { @@ -120,6 +124,8 @@ def release_lock(self) -> None: ) self.process() + return True + def process(self) -> None: """Process the lock requests and update the unit with the lock.""" if not self.state.unit_server.unit.is_leader(): @@ -172,49 +178,80 @@ def client(self) -> ValkeyClient: workload=self.charm.workload, ) - @property - def unit_with_lock(self) -> str | None: + def get_unit_with_lock(self, primary_ip: str | None = None) -> str | None: """Get the unit that currently holds the start lock.""" - return self.client.get_value(self.charm.sentinel_manager.get_primary_ip(), self.lock_key) + return self.client.get( + primary_ip or self.charm.sentinel_manager.get_primary_ip(), self.lock_key + ) @override - def request_lock(self) -> None: + def request_lock(self, timeout: int | None = None) -> bool: """Request the lock for the local unit.""" - if not self.unit_with_lock: - self.client.set_value( - hostname=self.charm.sentinel_manager.get_primary_ip(), - key=self.lock_key, - value=self.charm.state.unit_server.unit_name, + logger.debug(f"{self.charm.state.unit_server.unit_name} is requesting {self.name} lock.") + retry_until = time.time() + timeout if timeout else None + primary_ip = self.charm.sentinel_manager.get_primary_ip() + if self.get_unit_with_lock(primary_ip) == self.charm.state.unit_server.unit_name: + logger.debug( + f"{self.charm.state.unit_server.unit_name} already holds {self.name} lock. No need to request it again." ) - logger.info(f"{self.charm.state.unit_server.unit_name} requested {self.name} lock.") - else: + return True + + while True: + try: + if self.client.set( + hostname=primary_ip, + key=self.lock_key, + value=self.charm.state.unit_server.unit_name, + additional_args=[ + "NX", + "PX", + str( + 5 * 60 * 1000 + ), # Set the lock with a TTL of 5 minutes to prevent deadlocks + ], + ): + logger.debug( + f"{self.charm.state.unit_server.unit_name} acquired {self.name} lock." + ) + return True + except ValkeyWorkloadCommandError: + logger.warning( + f"{self.charm.state.unit_server.unit_name} failed to acquire {self.name} lock due to a workload command error. Retrying..." + ) + if retry_until and time.time() > retry_until: + logger.warning( + f"{self.charm.state.unit_server.unit_name} failed to acquire {self.name} lock within timeout. Giving up." + ) + return False logger.info( - f"{self.charm.state.unit_server.unit_name} attempted to request {self.name} lock, but it is currently held by {self.unit_with_lock}." + f"{self.charm.state.unit_server.unit_name} failed to acquire {self.name} lock. Retrying in 5 seconds." ) + time.sleep(5) + # update the primary ip in case a failover happens when we are waiting to acquire the lock + primary_ip = self.charm.sentinel_manager.get_primary_ip() @property def do_i_hold_lock(self) -> bool: """Check if the local unit holds the lock.""" + unit_with_lock = self.get_unit_with_lock() return ( - self.unit_with_lock is not None - and self.unit_with_lock == self.charm.state.unit_server.unit_name + unit_with_lock is not None and unit_with_lock == self.charm.state.unit_server.unit_name ) - def release_lock(self) -> None: + def release_lock(self) -> bool: """Release the lock from the local unit.""" - if self.do_i_hold_lock: - self.client.set_value( + if ( + self.client.delifeq( hostname=self.charm.sentinel_manager.get_primary_ip(), key=self.lock_key, - value="", + value=self.charm.state.unit_server.unit_name, ) - logger.info(f"{self.charm.state.unit_server.unit_name} released {self.name} lock.") + == "1" + ): + logger.debug(f"{self.charm.state.unit_server.unit_name} released {self.name} lock.") + return True else: - logger.info( - f"{self.charm.state.unit_server.unit_name} attempted to release {self.name} lock, but it is currently held by {self.unit_with_lock if self.unit_with_lock else 'no one'}." + logger.warning( + f"{self.charm.state.unit_server.unit_name} failed to release {self.name} lock. It may not have held the lock or it may have already been released." ) - - @property - def is_lock_free_to_give(self) -> bool: - """Check if the unit with the lock has completed its operation.""" - return not self.unit_with_lock + return False From 01e8a73963fd253fa9ba6807deb0946cd4e905b1 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 25 Feb 2026 11:53:59 +0000 Subject: [PATCH 108/282] refactor managers to use the new clients --- src/managers/cluster.py | 2 +- src/managers/sentinel.py | 161 ++++++++++++++++++++++----------------- 2 files changed, 91 insertions(+), 72 deletions(-) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 3b6d2b4..5f7dc84 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -47,7 +47,7 @@ def reload_acl_file(self) -> None: password=self.admin_password, workload=self.workload, ) - if not client.load_acl(hostname=self.state.bind_address): + if not client.acl_load(hostname=self.state.bind_address): raise ValkeyACLLoadError("Could not load ACL file into Valkey cluster.") def update_primary_auth(self) -> None: diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index ec311dc..e9f4269 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -11,15 +11,16 @@ from data_platform_helpers.advanced_statuses.types import Scope from tenacity import retry, retry_if_result, stop_after_attempt, wait_fixed -from common.client import ValkeyClient +from common.client import SentinelClient from common.exceptions import ( CannotSeeAllActiveSentinelsError, SentinelFailoverError, + ValkeyCannotGetPrimaryIPError, ValkeyWorkloadCommandError, ) from core.base_workload import WorkloadBase from core.cluster_state import ClusterState -from literals import PRIMARY_NAME, CharmUsers +from literals import CharmUsers from statuses import CharmStatuses logger = logging.getLogger(__name__) @@ -45,7 +46,7 @@ def admin_password(self) -> str: @retry( wait=wait_fixed(5), - stop=stop_after_attempt(5), + stop=stop_after_attempt(6), retry=retry_if_result(lambda result: result is False), retry_error_callback=lambda _: False, ) @@ -58,68 +59,80 @@ def is_sentinel_discovered(self) -> bool: if unit.is_active and unit.model.private_ip != self.state.bind_address ] - client = ValkeyClient( + client = SentinelClient( username=self.admin_user, password=self.admin_password, workload=self.workload, - connect_to="sentinel", ) for sentinel_ip in active_sentinels: try: - output, _ = client.exec_cli_command( - command=["sentinel", "sentinels", PRIMARY_NAME], - hostname=sentinel_ip, - ) - if self.state.bind_address not in output: - logger.info(f"Sentinel at {sentinel_ip} has not discovered this sentinel") + discovered_sentinels = { + sentinel["ip"] for sentinel in client.sentinels_primary(hostname=sentinel_ip) + } + if self.state.bind_address not in discovered_sentinels: + logger.warning( + f"Sentinel at {sentinel_ip} does not see local sentinel at {self.state.bind_address}." + ) return False + except ValkeyWorkloadCommandError: logger.warning(f"Could not query sentinel at {sentinel_ip} for primary discovery.") return False return True - def get_primary_ip(self) -> str | None: - """Get the IP address of the primary node in the cluster.""" - started_servers = [unit for unit in self.state.servers if unit.is_active] + def get_primary_ip(self) -> str: + """Get the IP address of the primary node in the cluster. - client = ValkeyClient( + This method queries the sentinels in the cluster for the primary information and returns the primary's IP address. + + Raises: + ValkeyWorkloadCommandError: If the CLI command to get primary information fails on all sentinels. + """ + started_servers = [unit.model.private_ip for unit in self.state.servers if unit.is_active] + + client = SentinelClient( username=self.admin_user, password=self.admin_password, workload=self.workload, - connect_to="sentinel", ) - for unit in started_servers: - if primary_ip := client.sentinel_get_primary_ip(hostname=unit.model.private_ip): - logger.info(f"Primary IP address is {primary_ip}") - return primary_ip + for unit_ip in started_servers: + try: + return client.get_primary_ip(hostname=unit_ip) + except ValkeyWorkloadCommandError: + logger.warning( + "Could not query sentinel for primary information from server at %s.", + unit_ip, + ) + continue logger.error( - "Could not determine primary IP from sentinels. Number of started servers: %d.", - len(started_servers), + "Could not determine primary IP from sentinels: %s.", + started_servers, ) - return None + raise ValkeyCannotGetPrimaryIPError("Could not determine primary IP from sentinels.") @retry( wait=wait_fixed(5), - stop=stop_after_attempt(5), + stop=stop_after_attempt(6), retry=retry_if_result(lambda result: result is False), retry_error_callback=lambda _: False, ) def is_healthy(self) -> bool: """Check if the sentinel service is healthy.""" - client = ValkeyClient( + client = SentinelClient( username=self.admin_user, password=self.admin_password, workload=self.workload, - connect_to="sentinel", ) if not client.ping(hostname=self.state.bind_address): logger.warning("Health check failed: Sentinel did not respond to ping.") return False - if not client.sentinel_get_master_info(hostname=self.state.bind_address): + try: + client.get_primary_info(hostname=self.state.bind_address) + except ValkeyWorkloadCommandError: logger.warning("Health check failed: Could not query sentinel for master information.") return False @@ -127,68 +140,59 @@ def is_healthy(self) -> bool: def failover(self) -> None: """Trigger a failover in the cluster.""" - client = ValkeyClient( + client = SentinelClient( username=self.admin_user, password=self.admin_password, workload=self.workload, - connect_to="sentinel", ) try: - client.sentinel_failover(self.state.bind_address) + client.trigger_failover(self.state.bind_address) + # check if failover is in progress every second for 5 seconds, if it is not then assume failover failed + client.is_failover_in_progress(hostname=self.state.bind_address) except ValkeyWorkloadCommandError as e: logger.error(f"Failed to trigger failover: {e}") raise SentinelFailoverError from e - def reset_sentinel_states(self) -> None: + def reset_sentinel_states(self, sentinel_ips: list[str]) -> None: """Reset the sentinel states on all sentinels in the cluster.""" - client = ValkeyClient( + client = SentinelClient( username=self.admin_user, password=self.admin_password, workload=self.workload, - connect_to="sentinel", ) - active_sentinels = [unit for unit in self.state.servers if unit.is_active] - logger.debug( - "Resetting sentinel states on %s", str([unit.unit_name for unit in active_sentinels]) - ) - for unit in active_sentinels: + for sentinel_ip in sentinel_ips: try: - client.sentinel_reset_state(hostname=unit.model.private_ip) + client.reset(hostname=sentinel_ip) except ValkeyWorkloadCommandError: - logger.warning( - f"Could not reset sentinel state on {unit.unit_name} ({unit.model.private_ip})." - ) + logger.warning("Could not reset sentinel state on %s.", sentinel_ip) raise - if not self.sentinel_sees_all_others(target_sentinel_ip=unit.model.private_ip): + if not self.target_sees_all_others( + target_sentinel_ip=sentinel_ip, sentinel_ips=sentinel_ips + ): logger.warning( - f"Sentinel at {unit.model.private_ip} does not see all other sentinels after reset." + "Sentinel at %s does not see all other sentinels after reset.", sentinel_ip ) raise CannotSeeAllActiveSentinelsError( - f"Sentinel at {unit.model.private_ip} does not see all other sentinels after reset." + "Sentinel at %s does not see all other sentinels after reset." % sentinel_ip ) @retry( - wait=wait_fixed(1), - stop=stop_after_attempt(5), + wait=wait_fixed(5), + stop=stop_after_attempt(6), retry=retry_if_result(lambda result: result is False), retry_error_callback=lambda _: False, ) - def sentinel_sees_all_others(self, target_sentinel_ip: str) -> bool: + def target_sees_all_others(self, target_sentinel_ip: str, sentinel_ips: list[str]) -> bool: """Check if the sentinel of the local unit sees all the other sentinels in the cluster.""" - client = ValkeyClient( + client = SentinelClient( username=self.admin_user, password=self.admin_password, workload=self.workload, - connect_to="sentinel", ) - other_active_sentinels = [ - unit.model.private_ip - for unit in self.state.servers - if unit.is_active and unit.model.private_ip != target_sentinel_ip - ] + other_active_sentinels = [ip for ip in sentinel_ips if ip != target_sentinel_ip] logger.debug( "Checking if sentinel at %s sees all other sentinels: %s", @@ -198,11 +202,10 @@ def sentinel_sees_all_others(self, target_sentinel_ip: str) -> bool: for sentinel_ip in other_active_sentinels: try: - output, _ = client.exec_cli_command( - command=["sentinel", "sentinels", PRIMARY_NAME], - hostname=target_sentinel_ip, - ) - if sentinel_ip not in output: + if sentinel_ip not in { + sentinel["ip"] + for sentinel in client.sentinels_primary(hostname=target_sentinel_ip) + }: logger.debug( f"Sentinel at {target_sentinel_ip} does not see sentinel at {sentinel_ip}" ) @@ -214,29 +217,34 @@ def sentinel_sees_all_others(self, target_sentinel_ip: str) -> bool: return False return True - def verify_expected_replica_count(self) -> bool: + @retry( + wait=wait_fixed(5), + stop=stop_after_attempt(6), + retry=retry_if_result(lambda result: result is False), + retry_error_callback=lambda _: False, + ) + def verify_expected_replica_count(self, sentinel_ips: list[str]) -> bool: """Verify that the sentinels in the cluster see the expected number of replicas.""" - client = ValkeyClient( + client = SentinelClient( username=self.admin_user, password=self.admin_password, workload=self.workload, - connect_to="sentinel", ) - units_started = [unit for unit in self.state.servers if unit.is_active] # all started servers except primary are expected to be replicas - expected_replicas = len(units_started) - 1 + expected_replicas = len(sentinel_ips) - 1 logger.debug( - "Verifying expected replica count. Expected replicas: %d, started servers: %s", + "Verifying expected replica count. Expected replicas: %d, active servers: %s", expected_replicas, - str([unit.unit_name for unit in units_started]), + sentinel_ips, ) try: - for unit in units_started: - replica_info = client.sentinel_get_replica_info(hostname=unit.model.private_ip) - if expected_replicas != (nbr_replicas := replica_info.count("name")): + for sentinel_ip in sentinel_ips: + if expected_replicas != ( + number_replicas := len(client.replicas_primary(hostname=sentinel_ip)) + ): logger.warning( - f"Sentinel at {unit.model.private_ip} sees {nbr_replicas} replicas, expected {expected_replicas}." + f"Sentinel at {sentinel_ip} sees {number_replicas} replicas, expected {expected_replicas}." ) return False except ValkeyWorkloadCommandError: @@ -244,6 +252,17 @@ def verify_expected_replica_count(self) -> bool: return False return True + def get_active_sentinelips(self, hostname: str) -> list[str]: + """Get a list of IP addresses of the active sentinels in the cluster.""" + client = SentinelClient( + username=self.admin_user, + password=self.admin_password, + workload=self.workload, + ) + return [client.get_primary_ip(hostname=hostname)] + [ + sentinel["ip"] for sentinel in client.sentinels_primary(hostname=hostname) + ] + def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the sentinel manager's statuses.""" status_list: list[StatusObject] = self.state.statuses.get( From c82522312c95789275d2729b5152ca90c61a64e8 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 25 Feb 2026 12:04:23 +0000 Subject: [PATCH 109/282] refactor verify_expected_replica_count --- src/common/exceptions.py | 4 ++++ src/managers/sentinel.py | 33 +++++++++++++++++++++------------ 2 files changed, 25 insertions(+), 12 deletions(-) diff --git a/src/common/exceptions.py b/src/common/exceptions.py index ed8fa4d..2bd603a 100644 --- a/src/common/exceptions.py +++ b/src/common/exceptions.py @@ -50,3 +50,7 @@ class ValkeyServicesCouldNotBeStoppedError(Exception): class CannotSeeAllActiveSentinelsError(Exception): """Custom Exception if the local sentinel cannot see all active sentinels in the cluster.""" + + +class SentinelIncorrectReplicaCountError(Exception): + """Custom Exception if the sentinel sees an incorrect number of replicas.""" diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index e9f4269..a17b2a6 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -15,6 +15,7 @@ from common.exceptions import ( CannotSeeAllActiveSentinelsError, SentinelFailoverError, + SentinelIncorrectReplicaCountError, ValkeyCannotGetPrimaryIPError, ValkeyWorkloadCommandError, ) @@ -220,11 +221,17 @@ def target_sees_all_others(self, target_sentinel_ip: str, sentinel_ips: list[str @retry( wait=wait_fixed(5), stop=stop_after_attempt(6), - retry=retry_if_result(lambda result: result is False), - retry_error_callback=lambda _: False, + reraise=True, ) - def verify_expected_replica_count(self, sentinel_ips: list[str]) -> bool: - """Verify that the sentinels in the cluster see the expected number of replicas.""" + def verify_expected_replica_count(self, sentinel_ips: list[str]) -> None: + """Verify that the sentinels in the cluster see the expected number of replicas. + + The expected number of replicas is the number of active sentinels minus one (the primary). + + Raises: + SentinelIncorrectReplicaCountError: If any sentinel sees an incorrect number of replicas. + ValkeyWorkloadCommandError: If the CLI command to get replica information fails on any sentinel. + """ client = SentinelClient( username=self.admin_user, password=self.admin_password, @@ -238,21 +245,23 @@ def verify_expected_replica_count(self, sentinel_ips: list[str]) -> bool: expected_replicas, sentinel_ips, ) - try: - for sentinel_ip in sentinel_ips: + + for sentinel_ip in sentinel_ips: + try: if expected_replicas != ( number_replicas := len(client.replicas_primary(hostname=sentinel_ip)) ): logger.warning( f"Sentinel at {sentinel_ip} sees {number_replicas} replicas, expected {expected_replicas}." ) - return False - except ValkeyWorkloadCommandError: - logger.warning("Could not query sentinel for replica information.") - return False - return True + raise SentinelIncorrectReplicaCountError( + f"Sentinel at {sentinel_ip} sees {number_replicas} replicas, expected {expected_replicas}." + ) + except ValkeyWorkloadCommandError: + logger.warning("Could not query sentinel for replica information.") + raise - def get_active_sentinelips(self, hostname: str) -> list[str]: + def get_active_sentinel_ips(self, hostname: str) -> list[str]: """Get a list of IP addresses of the active sentinels in the cluster.""" client = SentinelClient( username=self.admin_user, From f9c37f88e1e87f07d96a4b99612f61af9d404ea8 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 25 Feb 2026 12:04:48 +0000 Subject: [PATCH 110/282] update base events with new refactoring --- src/events/base_events.py | 38 +++++++++++++++++++------------------- 1 file changed, 19 insertions(+), 19 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 57ff01b..cd9d315 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -6,15 +6,14 @@ import logging import socket -import time from typing import TYPE_CHECKING import ops from common.exceptions import ( - CannotSeeAllActiveSentinelsError, SentinelFailoverError, ValkeyACLLoadError, + ValkeyCannotGetPrimaryIPError, ValkeyConfigSetError, ValkeyConfigurationError, ValkeyServiceNotAliveError, @@ -127,9 +126,9 @@ def _on_start(self, event: ops.StartEvent) -> None: logger.info("Waiting for lock to start") event.defer() return - - primary_ip = self.charm.sentinel_manager.get_primary_ip() - if not primary_ip: + try: + primary_ip = self.charm.sentinel_manager.get_primary_ip() + except ValkeyCannotGetPrimaryIPError: if self.charm.state.number_units_started == 0 and self.charm.unit.is_leader(): primary_ip = self.charm.state.bind_address else: @@ -448,10 +447,8 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: component_name=self.charm.cluster_manager.name, statuses_state=self.charm.state.statuses, ) + # blocks until the lock is acquired scale_down_lock.request_lock() - while not scale_down_lock.do_i_hold_lock: - logger.debug("Waiting for lock to scale down") - time.sleep(5) self.charm.state.statuses.delete( ScaleDownStatuses.WAIT_FOR_LOCK.value, @@ -466,9 +463,10 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: component_name=self.charm.cluster_manager.name, statuses_state=self.charm.state.statuses, ) - # if unit has primary then failover - if self.charm.sentinel_manager.get_primary_ip() == self.charm.state.bind_address: + if ( + primary_ip := self.charm.sentinel_manager.get_primary_ip() + ) == self.charm.state.bind_address: self.charm.state.unit_server.update( {"scale_down_state": ScaleDownState.WAIT_TO_FAILOVER} ) @@ -477,10 +475,12 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: self.charm.state.bind_address, ) try: + logger.debug("Triggering sentinel failover on primary IP %s", primary_ip) self.charm.sentinel_manager.failover() + primary_ip = self.charm.sentinel_manager.get_primary_ip() logger.debug( "Failover completed, new primary ip %s", - self.charm.sentinel_manager.get_primary_ip(), + primary_ip, ) except SentinelFailoverError: logger.error("Failed to trigger failover before scale down") @@ -501,17 +501,17 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: "start_state": StartState.NOT_STARTED.value, } ) - try: - self.charm.sentinel_manager.reset_sentinel_states() - except (ValkeyWorkloadCommandError, CannotSeeAllActiveSentinelsError): - logger.error("Failed to reset sentinel states before scale down") - raise + active_units = [ + ip + for ip in self.charm.sentinel_manager.get_active_sentinel_ips(primary_ip) + if ip != self.charm.state.bind_address + ] + logger.debug("Resetting sentinel states on active units: %s", active_units) + self.charm.sentinel_manager.reset_sentinel_states(active_units) # check health after scale down self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.HEALTH_CHECK}) - if not self.charm.sentinel_manager.verify_expected_replica_count(): - logger.error("Not all sentinels see the expected number of replicas after scale down") - raise + self.charm.sentinel_manager.verify_expected_replica_count(active_units) # release lock self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY}) From 674b96ffced3fcc89c378fd14c38e8662efd356e Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 25 Feb 2026 13:01:26 +0000 Subject: [PATCH 111/282] remove unnecessary debug log --- src/common/client.py | 1 - 1 file changed, 1 deletion(-) diff --git a/src/common/client.py b/src/common/client.py index 0ad7e5d..d0a9234 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -383,7 +383,6 @@ def replicas_primary(self, hostname: str) -> list[dict[str, str]]: replicas = self.exec_cli_command( command=["sentinel", "replicas", PRIMARY_NAME], hostname=hostname ) - logger.debug("Retrieved replicas information from sentinel at %s: %s", hostname, replicas) return replicas def sentinels_primary(self, hostname: str) -> list[dict[str, str]]: From 733dbd1ba9cbae877918364d0dba165d6420e139 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Feb 2026 06:46:35 +0000 Subject: [PATCH 112/282] shorten statuses --- src/common/client.py | 1 + src/statuses.py | 6 +++--- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index b15aed0..9354b32 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -5,6 +5,7 @@ import json import logging +from typing import Any from tenacity import retry, retry_if_result, stop_after_attempt, wait_fixed diff --git a/src/statuses.py b/src/statuses.py index d7faa1e..b6cd779 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -80,15 +80,15 @@ class ScaleDownStatuses(Enum): WAIT_FOR_LOCK = StatusObject( status="maintenance", - message="Waiting for lock to perform scale down operations...", + message="Waiting for lock to scale down ...", running="async", ) SCALING_DOWN = StatusObject( status="maintenance", - message="Performing scale down operations...", + message="Scaling down ...", running="async", ) GOING_AWAY = StatusObject( status="maintenance", - message="Waiting for unit to be removed by juju...", + message="Waiting for juju to remove the unit ...", ) From b1258b4529c9d9cd39edfc2522f866349d08f589 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Feb 2026 09:03:07 +0000 Subject: [PATCH 113/282] fix unit tests and change some function names on client --- src/common/client.py | 19 ++++---- src/common/exceptions.py | 4 ++ src/common/locks.py | 11 ++++- src/events/base_events.py | 4 +- src/managers/cluster.py | 5 +- src/managers/sentinel.py | 8 ++-- tests/unit/helpers.py | 6 +++ tests/unit/test_charm.py | 96 +++++++++++++-------------------------- 8 files changed, 70 insertions(+), 83 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index 9354b32..7c5e4b0 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -116,7 +116,7 @@ def ping(self, hostname: str) -> bool: except ValkeyWorkloadCommandError: return False - def get_persistence_info(self, hostname: str) -> dict[str, str] | None: + def info_persistence(self, hostname: str) -> dict[str, str] | None: """Get the persistence information of the Valkey server. Args: @@ -168,7 +168,7 @@ def set(self, hostname: str, key: str, value: str, additional_args: list[str] = self.exec_cli_command(["set", key, value] + additional_args, hostname=hostname) == "OK" ) - def get(self, hostname: str, key: str) -> str: + def get(self, hostname: str, key: str) -> Any: """Get the value of a key from the Valkey server. Args: @@ -176,7 +176,7 @@ def get(self, hostname: str, key: str) -> str: key (str): The key to retrieve. Returns: - str: The value of the key if retrieved successfully. + Any: The value of the key if retrieved successfully. Raises: ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. @@ -199,7 +199,7 @@ def delifeq(self, hostname: str, key: str, value: str) -> str: """ return self.exec_cli_command(["delifeq", key, value], hostname=hostname, json_output=False) - def is_replica_synced(self, hostname: str) -> bool: + def role(self, hostname: str) -> list[str | Any]: """Check if the replica is synced with the primary. Args: @@ -211,8 +211,7 @@ def is_replica_synced(self, hostname: str) -> bool: Raises: ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. """ - output = self.exec_cli_command(["role"], hostname=hostname) - return output[0] == "slave" and output[3] == "connected" + return self.exec_cli_command(["role"], hostname=hostname) def config_set(self, hostname: str, parameter: str, value: str) -> bool: """Set a runtime configuration parameter on the Valkey server. @@ -274,7 +273,7 @@ def ping(self, hostname: str) -> bool: except ValkeyWorkloadCommandError: return False - def get_primary_ip(self, hostname: str) -> str: + def get_primary_addr_by_name(self, hostname: str) -> str: """Get the primary IP address from the sentinel. Args: @@ -290,7 +289,7 @@ def get_primary_ip(self, hostname: str) -> str: command=["sentinel", "get-primary-addr-by-name", PRIMARY_NAME], hostname=hostname )[0] - def get_primary_info(self, hostname: str) -> dict[str, str]: + def primary(self, hostname: str) -> dict[str, str]: r"""Get the primary info from the sentinel. Args: @@ -306,7 +305,7 @@ def get_primary_info(self, hostname: str) -> dict[str, str]: command=["sentinel", "primary", PRIMARY_NAME], hostname=hostname ) - def trigger_failover(self, hostname: str) -> bool: + def failover_primary_coordinated(self, hostname: str) -> bool: """Trigger a failover through the sentinel. Args: @@ -344,7 +343,7 @@ def is_failover_in_progress(self, hostname: str) -> bool: Raises: ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. """ - return "failover_in_progress" in self.get_primary_info(hostname=hostname).get("flags", "") + return "failover_in_progress" in self.primary(hostname=hostname).get("flags", "") def reset(self, hostname: str) -> None: """Reset the sentinel state for the primary. diff --git a/src/common/exceptions.py b/src/common/exceptions.py index 2bd603a..14e47c9 100644 --- a/src/common/exceptions.py +++ b/src/common/exceptions.py @@ -54,3 +54,7 @@ class CannotSeeAllActiveSentinelsError(Exception): class SentinelIncorrectReplicaCountError(Exception): """Custom Exception if the sentinel sees an incorrect number of replicas.""" + + +class RequestingLockTimedOutError(Exception): + """Custom Exception if requesting a lock times out.""" diff --git a/src/common/locks.py b/src/common/locks.py index 9b31a4b..2de3ae3 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -186,7 +186,16 @@ def get_unit_with_lock(self, primary_ip: str | None = None) -> str | None: @override def request_lock(self, timeout: int | None = None) -> bool: - """Request the lock for the local unit.""" + """Request the lock for the local unit. + + This method will keep trying to acquire the lock until it is acquired or until the timeout is reached (if provided). + + Args: + timeout (int | None): The maximum time to keep trying to acquire the lock, in seconds. If None, it will keep trying indefinitely. + + Returns: + bool: True if the lock was acquired, False if the timeout was reached before acquiring the lock. + """ logger.debug(f"{self.charm.state.unit_server.unit_name} is requesting {self.name} lock.") retry_until = time.time() + timeout if timeout else None primary_ip = self.charm.sentinel_manager.get_primary_ip() diff --git a/src/events/base_events.py b/src/events/base_events.py index 5cddac0..ba77bbe 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -11,6 +11,7 @@ import ops from common.exceptions import ( + RequestingLockTimedOutError, SentinelFailoverError, ValkeyACLLoadError, ValkeyCannotGetPrimaryIPError, @@ -432,7 +433,8 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: statuses_state=self.charm.state.statuses, ) # blocks until the lock is acquired - scale_down_lock.request_lock() + if not scale_down_lock.request_lock(): + raise RequestingLockTimedOutError("Failed to acquire scale down lock within timeout") self.charm.state.statuses.delete( ScaleDownStatuses.WAIT_FOR_LOCK.value, diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 5f7dc84..da6febf 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -79,7 +79,8 @@ def is_replica_synced(self) -> bool: password=self.admin_password, workload=self.workload, ) - return client.is_replica_synced(hostname=self.state.bind_address) + role_info = client.role(hostname=self.state.bind_address) + return role_info[0] == "slave" and role_info[3] == "connected" @retry( wait=wait_fixed(5), @@ -100,7 +101,7 @@ def is_healthy(self, is_primary: bool = False, check_replica_sync: bool = True) return False if ( - persistence_info := client.get_persistence_info(hostname=self.state.bind_address) + persistence_info := client.info_persistence(hostname=self.state.bind_address) ) and persistence_info.get("loading", "") != "0": logger.warning("Health check failed: Valkey server is still loading data.") return False diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index cc6e999..dda1016 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -100,7 +100,7 @@ def get_primary_ip(self) -> str: for unit_ip in started_servers: try: - return client.get_primary_ip(hostname=unit_ip) + return client.get_primary_addr_by_name(hostname=unit_ip) except ValkeyWorkloadCommandError: logger.warning( "Could not query sentinel for primary information from server at %s.", @@ -132,7 +132,7 @@ def is_healthy(self) -> bool: return False try: - client.get_primary_info(hostname=self.state.bind_address) + client.primary(hostname=self.state.bind_address) except ValkeyWorkloadCommandError: logger.warning("Health check failed: Could not query sentinel for master information.") return False @@ -154,7 +154,7 @@ def failover(self) -> None: workload=self.workload, ) try: - client.trigger_failover(self.state.bind_address) + client.failover_primary_coordinated(self.state.bind_address) client.is_failover_in_progress(hostname=self.state.bind_address) except ValkeyWorkloadCommandError as e: logger.error(f"Failed to trigger failover: {e}") @@ -300,7 +300,7 @@ def get_active_sentinel_ips(self, hostname: str) -> list[str]: password=self.admin_password, workload=self.workload, ) - return [client.get_primary_ip(hostname=hostname)] + [ + return [client.get_primary_addr_by_name(hostname=hostname)] + [ sentinel["ip"] for sentinel in client.sentinels_primary(hostname=hostname) ] diff --git a/tests/unit/helpers.py b/tests/unit/helpers.py index afd9eef..75876bf 100644 --- a/tests/unit/helpers.py +++ b/tests/unit/helpers.py @@ -2,10 +2,16 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. +from pathlib import Path + +import yaml from data_platform_helpers.advanced_statuses.models import StatusObject from data_platform_helpers.advanced_statuses.utils import as_status from ops import testing +METADATA = yaml.safe_load(Path("./metadata.yaml").read_text()) +APP_NAME = METADATA["name"] + def status_is(state_out: testing.State, to_status: StatusObject, is_app: bool = False) -> bool: """Check if the status is set to the given status.""" diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 35b4275..95bce93 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -2,11 +2,9 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. -from pathlib import Path from unittest.mock import patch import pytest -import yaml from ops import ActiveStatus, pebble, testing from common.exceptions import ValkeyServiceNotAliveError, ValkeyWorkloadCommandError @@ -21,7 +19,7 @@ ) from src.statuses import CharmStatuses, ClusterStatuses, StartStatuses -from .helpers import status_is +from .helpers import APP_NAME, status_is CHARM_USER = "_daemon_" CONTAINER = "valkey" @@ -29,8 +27,6 @@ SERVICE_METRIC_EXPORTER = "metric_exporter" SERVICE_SENTINEL = "valkey-sentinel" -METADATA = yaml.safe_load(Path("./metadata.yaml").read_text()) -APP_NAME = METADATA["name"] internal_passwords_secret = testing.Secret( tracked_content={f"{user.value}-password": "secure-password" for user in CharmUsers}, @@ -100,17 +96,18 @@ def test_start_primary(cloud_spec): with ( patch("common.client.ValkeyClient.ping", return_value=True), - patch("common.client.ValkeyClient.get_persistence_info", return_value={"loading": "0"}), - patch("common.client.ValkeyClient.set_value", return_value=True), + patch("common.client.ValkeyClient.info_persistence", return_value={"loading": "0"}), + patch("common.client.ValkeyClient.set", return_value=True), ): state_out = ctx.run(ctx.on.start(), state_out) assert status_is(state_out, StartStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value) with ( patch("common.client.ValkeyClient.ping", return_value=True), - patch("common.client.ValkeyClient.get_persistence_info", return_value={"loading": "0"}), - patch("common.client.ValkeyClient.set_value", return_value=True), - patch("common.client.ValkeyClient.sentinel_get_master_info", return_value={"ip": "test"}), + patch("common.client.SentinelClient.ping", return_value=True), + patch("common.client.ValkeyClient.info_persistence", return_value={"loading": "0"}), + patch("common.client.ValkeyClient.set", return_value=True), + patch("common.client.SentinelClient.primary", return_value={"ip": "test"}), ): state_out = ctx.run(ctx.on.start(), state_out) assert state_out.unit_status == ActiveStatus() @@ -199,11 +196,14 @@ def test_start_non_primary(cloud_spec): assert status_is(state_out, StartStatuses.WAITING_TO_START.value) # health check - with patch("common.client.ValkeyClient.is_replica_synced", return_value=False): + with patch( + "common.client.ValkeyClient.role", + return_value=["slave", "ip", 6379, "sync", 467184], + ): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, - local_app_data={"starting-member": "valkey/0"}, + local_app_data={"start-member": "valkey/0"}, peers_data={1: {"start-state": "started"}}, ) state_in = testing.State( @@ -216,16 +216,16 @@ def test_start_non_primary(cloud_spec): state_out = ctx.run(ctx.on.start(), state_in) assert status_is(state_out, StartStatuses.SERVICE_STARTING.value) - # replica syncing + # sentinel not yet discovered with ( - patch("managers.cluster.ClusterManager.is_replica_synced", return_value=False), + patch("managers.sentinel.SentinelManager.is_sentinel_discovered", return_value=False), patch("managers.cluster.ClusterManager.is_healthy", return_value=True), patch("managers.sentinel.SentinelManager.is_healthy", return_value=True), ): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, - local_app_data={"starting-member": "valkey/0"}, + local_app_data={"start-member": "valkey/0"}, peers_data={1: {"start-state": "started"}}, ) state_in = testing.State( @@ -236,18 +236,19 @@ def test_start_non_primary(cloud_spec): containers={container}, ) state_out = ctx.run(ctx.on.start(), state_in) - assert status_is(state_out, StartStatuses.WAITING_FOR_REPLICA_SYNC.value) + assert status_is(state_out, StartStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value) - # sentinel not yet discovered + # replica syncing with ( - patch("managers.sentinel.SentinelManager.is_sentinel_discovered", return_value=False), + patch("managers.cluster.ClusterManager.is_replica_synced", return_value=False), + patch("managers.sentinel.SentinelManager.is_sentinel_discovered", return_value=True), patch("managers.cluster.ClusterManager.is_healthy", return_value=True), patch("managers.sentinel.SentinelManager.is_healthy", return_value=True), ): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, - local_app_data={"starting-member": "valkey/0"}, + local_app_data={"start-member": "valkey/0"}, peers_data={1: {"start-state": "started"}}, ) state_in = testing.State( @@ -258,8 +259,7 @@ def test_start_non_primary(cloud_spec): containers={container}, ) state_out = ctx.run(ctx.on.start(), state_in) - assert status_is(state_out, StartStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value) - + assert status_is(state_out, StartStatuses.WAITING_FOR_REPLICA_SYNC.value) # Happy path with sentinel discovered and replica synced with ( patch("managers.sentinel.SentinelManager.is_sentinel_discovered", return_value=True), @@ -270,7 +270,7 @@ def test_start_non_primary(cloud_spec): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, - local_app_data={"starting-member": "valkey/0"}, + local_app_data={"start-member": "valkey/0"}, peers_data={1: {"start-state": "started"}}, ) state_in = testing.State( @@ -476,12 +476,12 @@ def test_config_changed_leader_unit(cloud_spec): ) with ( patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("common.client.ValkeyClient.load_acl") as mock_load_acl, + patch("common.client.ValkeyClient.acl_load") as mock_acl_load, patch("common.client.ValkeyClient.config_set") as mock_config_set, ): state_out = ctx.run(ctx.on.config_changed(), state_in) mock_set_acl_file.assert_called_once() - mock_load_acl.assert_called_once() + mock_acl_load.assert_called_once() mock_config_set.assert_called_once() secret_out = state_out.get_secret( label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" @@ -492,40 +492,6 @@ def test_config_changed_leader_unit(cloud_spec): ) -# def test_config_changed_leader_unit_primary(cloud_spec): -# ctx = testing.Context(ValkeyCharm, app_trusted=True) -# relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) -# container = testing.Container(name=CONTAINER, can_connect=True) - -# password_secret = testing.Secret( -# tracked_content={user.value: "secure-password" for user in CharmUsers}, -# remote_grants=APP_NAME, -# ) -# state_in = testing.State( -# leader=True, -# relations={relation}, -# containers={container}, -# secrets={password_secret}, -# config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, -# model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), -# ) -# with ( -# patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, -# patch("common.client.ValkeyClient.load_acl") as mock_load_acl, -# patch("common.client.ValkeyClient.config_set") as mock_config_set, -# patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="127.0.1.1"), -# ): -# state_out = ctx.run(ctx.on.config_changed(), state_in) -# mock_set_acl_file.assert_called_once() -# secret_out = state_out.get_secret( -# label=f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" -# ) -# assert ( -# secret_out.latest_content.get(f"{CharmUsers.VALKEY_ADMIN.value}-password") -# == "secure-password" -# ) - - def test_config_changed_leader_unit_wrong_username(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) @@ -585,14 +551,14 @@ def test_change_password_secret_changed_non_leader_unit(cloud_spec): "events.base_events.BaseEvents._update_internal_users_password" ) as mock_update_password, patch("managers.config.ConfigManager.set_acl_file") as mock_set_acl_file, - patch("common.client.ValkeyClient.load_acl") as mock_load_acl, + patch("common.client.ValkeyClient.acl_load") as mock_acl_load, patch("common.client.ValkeyClient.config_set") as mock_config_set, patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="127.0.1.1"), ): ctx.run(ctx.on.secret_changed(password_secret), state_in) mock_update_password.assert_not_called() mock_set_acl_file.assert_called_once() - mock_load_acl.assert_called_once() + mock_acl_load.assert_called_once() mock_config_set.assert_called_once() @@ -683,7 +649,7 @@ def test_relation_changed_event_leader_setting_starting_member(cloud_spec): model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) state_out = ctx.run(ctx.on.relation_changed(relation), state_in) - assert state_out.get_relation(1).local_app_data.get("starting-member") == "valkey/1" + assert state_out.get_relation(1).local_app_data.get("start-member") == "valkey/1" def test_relation_changed_event_leader_clears_starting_member(cloud_spec): @@ -691,7 +657,7 @@ def test_relation_changed_event_leader_clears_starting_member(cloud_spec): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, - local_app_data={"starting-member": "valkey/1"}, + local_app_data={"start-member": "valkey/1"}, local_unit_data={"start-state": "started"}, peers_data={1: {"start-state": "started"}}, ) @@ -704,7 +670,7 @@ def test_relation_changed_event_leader_clears_starting_member(cloud_spec): model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) state_out = ctx.run(ctx.on.relation_changed(relation), state_in) - assert state_out.get_relation(1).local_app_data.get("starting-member") is None + assert state_out.get_relation(1).local_app_data.get("start-member") is None def test_relation_changed_event_leader_leaves_starting_member_as_is(cloud_spec): @@ -712,7 +678,7 @@ def test_relation_changed_event_leader_leaves_starting_member_as_is(cloud_spec): relation = testing.PeerRelation( id=1, endpoint=PEER_RELATION, - local_app_data={"starting-member": "valkey/1"}, + local_app_data={"start-member": "valkey/1"}, local_unit_data={"start-state": StartState.STARTED.value}, peers_data={ 1: { @@ -730,4 +696,4 @@ def test_relation_changed_event_leader_leaves_starting_member_as_is(cloud_spec): model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) state_out = ctx.run(ctx.on.relation_changed(relation), state_in) - assert state_out.get_relation(1).local_app_data.get("starting-member") == "valkey/1" + assert state_out.get_relation(1).local_app_data.get("start-member") == "valkey/1" From cbe8f661bd4b76bace2000c5110f652d664d7f56 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Feb 2026 09:18:32 +0000 Subject: [PATCH 114/282] remove unnecessary catches --- src/events/base_events.py | 26 ++++++-------------------- 1 file changed, 6 insertions(+), 20 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index ba77bbe..269312b 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -12,13 +12,11 @@ from common.exceptions import ( RequestingLockTimedOutError, - SentinelFailoverError, ValkeyACLLoadError, ValkeyCannotGetPrimaryIPError, ValkeyConfigSetError, ValkeyConfigurationError, ValkeyServiceNotAliveError, - ValkeyServicesCouldNotBeStoppedError, ValkeyServicesFailedToStartError, ValkeyWorkloadCommandError, ) @@ -456,29 +454,17 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: self.charm.state.unit_server.update( {"scale_down_state": ScaleDownState.WAIT_TO_FAILOVER} ) + logger.debug("Triggering sentinel failover on primary IP %s", primary_ip) + self.charm.sentinel_manager.failover() + primary_ip = self.charm.sentinel_manager.get_primary_ip() logger.debug( - "Unit with IP %s is primary, triggering failover before scale down", - self.charm.state.bind_address, + "Failover completed, new primary ip %s", + primary_ip, ) - try: - logger.debug("Triggering sentinel failover on primary IP %s", primary_ip) - self.charm.sentinel_manager.failover() - primary_ip = self.charm.sentinel_manager.get_primary_ip() - logger.debug( - "Failover completed, new primary ip %s", - primary_ip, - ) - except SentinelFailoverError: - logger.error("Failed to trigger failover before scale down") - raise # stop valkey and sentinel processes self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.STOP_SERVICES}) - try: - self.charm.workload.stop() - except ValkeyServicesCouldNotBeStoppedError: - logger.error("Failed to stop Valkey services before scale down") - raise + self.charm.workload.stop() # reset sentinel states on other units self.charm.state.unit_server.update( From b30e1e973f0811dedbdd466394f655afa5975e21 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Feb 2026 09:19:37 +0000 Subject: [PATCH 115/282] add scale down unit tests --- tests/unit/test_scaledown.py | 137 +++++++++++++++++++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 tests/unit/test_scaledown.py diff --git a/tests/unit/test_scaledown.py b/tests/unit/test_scaledown.py new file mode 100644 index 0000000..46db2d4 --- /dev/null +++ b/tests/unit/test_scaledown.py @@ -0,0 +1,137 @@ +#!/usr/bin/env python3 +# Copyright 2025 Canonical Ltd. +# See LICENSE file for licensing details. + +from unittest.mock import PropertyMock, patch + +import pytest +from ops import testing + +from charm import ValkeyCharm +from literals import CONTAINER, PEER_RELATION +from statuses import ScaleDownStatuses +from tests.unit.helpers import status_is + + +def get_3_unit_peer_relation(): + """Helper function to create a peer relation with 3 units.""" + return testing.PeerRelation( + id=1, + endpoint=PEER_RELATION, + local_unit_data={ + "hostname": "valkey-0", + "private-ip": "10.0.1.0", + "start-state": "started", + }, + peers_data={ + unit_id: { + "hostname": f"valkey-{unit_id}", + "private-ip": f"10.0.1.{unit_id}", + "start-state": "started", + } + for unit_id in range(1, 4) + }, + ) + + +def test_other_unit_has_lock(cloud_spec): + """Test that if another unit has the lock, then the lock is not acquired.""" + ctx = testing.Context(ValkeyCharm, app_trusted=True) + relation = get_3_unit_peer_relation() + container = testing.Container(name=CONTAINER, can_connect=True) + data_stroage = testing.Storage(name="data") + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + relations={relation}, + leader=True, + containers={container}, + storages={data_stroage}, + ) + + with ( + patch("common.locks.ScaleDownLock.request_lock", return_value=False), + ): + # expect raised exception due to lock not being acquired + with pytest.raises(testing.errors.UncaughtCharmError) as exc_info: + ctx.run(ctx.on.storage_detaching(data_stroage), state_in) + assert "RequestingLockTimedOutError" in str(exc_info.value) + + +def test_non_primary(cloud_spec): + """Test that if another unit has the lock, then the lock is not acquired.""" + ctx = testing.Context(ValkeyCharm, app_trusted=True) + relation = get_3_unit_peer_relation() + container = testing.Container(name=CONTAINER, can_connect=True) + data_stroage = testing.Storage(name="data") + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + relations={relation}, + leader=True, + containers={container}, + storages={data_stroage}, + ) + + with ( + patch("common.locks.ScaleDownLock.request_lock", return_value=True), + patch("common.locks.ScaleDownLock.release_lock", return_value=True), + patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="10.0.1.1"), + patch("workload_k8s.ValkeyK8sWorkload.stop") as mock_stop, + patch( + "managers.sentinel.SentinelManager.reset_sentinel_states" + ) as mock_reset_sentinel_states, + patch( + "managers.sentinel.SentinelManager.verify_expected_replica_count" + ) as mock_verify_expected_replica_count, + patch( + "managers.sentinel.SentinelManager.get_active_sentinel_ips", + return_value=["10.0.1.1", "10.0.1.2", "10.0.1.3"], + ), + ): + state_out = ctx.run(ctx.on.storage_detaching(data_stroage), state_in) + mock_stop.assert_called_once() + mock_reset_sentinel_states.assert_called_once() + mock_verify_expected_replica_count.assert_called_once() + status_is(state_out, ScaleDownStatuses.GOING_AWAY.value) + + +def test_primary(cloud_spec): + """Test that if another unit has the lock, then the lock is not acquired.""" + ctx = testing.Context(ValkeyCharm, app_trusted=True) + relation = get_3_unit_peer_relation() + container = testing.Container(name=CONTAINER, can_connect=True) + data_stroage = testing.Storage(name="data") + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + relations={relation}, + leader=True, + containers={container}, + storages={data_stroage}, + ) + + with ( + patch( + "core.cluster_state.ClusterState.bind_address", + new_callable=PropertyMock(return_value="10.0.1.0"), + ), + patch("common.locks.ScaleDownLock.request_lock", return_value=True), + patch("common.locks.ScaleDownLock.release_lock", return_value=True), + patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="10.0.1.0"), + patch("workload_k8s.ValkeyK8sWorkload.stop") as mock_stop, + patch("managers.sentinel.SentinelManager.failover") as mock_failover, + patch( + "managers.sentinel.SentinelManager.reset_sentinel_states" + ) as mock_reset_sentinel_states, + patch( + "managers.sentinel.SentinelManager.verify_expected_replica_count" + ) as mock_verify_expected_replica_count, + patch( + "managers.sentinel.SentinelManager.get_active_sentinel_ips", + return_value=["10.0.1.1", "10.0.1.2", "10.0.1.3"], + ), + ): + state_out = ctx.run(ctx.on.storage_detaching(data_stroage), state_in) + mock_failover.assert_called_once() + mock_stop.assert_called_once() + mock_reset_sentinel_states.assert_called_once() + mock_verify_expected_replica_count.assert_called_once() + status_is(state_out, ScaleDownStatuses.GOING_AWAY.value) From e2ba6ef319fde8d62c5480c2178aa2f166f8815a Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Feb 2026 10:43:25 +0000 Subject: [PATCH 116/282] only try to update passwords on valkey if it is started --- src/events/base_events.py | 12 ++++++++---- src/statuses.py | 6 +++--- 2 files changed, 11 insertions(+), 7 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 269312b..ee6ead9 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -321,10 +321,12 @@ def _on_secret_changed(self, event: ops.SecretChangedEvent) -> None: # leader unit processed the secret change from user, non-leader units can replicate try: self.charm.config_manager.set_acl_file() - self.charm.cluster_manager.reload_acl_file() + if self.charm.state.unit_server.is_started: + self.charm.cluster_manager.reload_acl_file() # update the local unit admin password to match the leader self.charm.config_manager.update_local_valkey_admin_password() - self.charm.cluster_manager.update_primary_auth() + if self.charm.state.unit_server.is_started: + self.charm.cluster_manager.update_primary_auth() except (ValkeyACLLoadError, ValkeyConfigSetError, ValkeyWorkloadCommandError) as e: logger.error(e) self.charm.status.set_running_status( @@ -382,7 +384,8 @@ def _update_internal_users_password(self, secret_id: str) -> None: logger.info("Password(s) for internal users have changed") try: self.charm.config_manager.set_acl_file(passwords=new_passwords) - self.charm.cluster_manager.reload_acl_file() + if self.charm.state.unit_server.is_started: + self.charm.cluster_manager.reload_acl_file() self.charm.state.cluster.update( { f"{user.value.replace('-', '_')}_password": new_passwords[user.value] @@ -391,7 +394,8 @@ def _update_internal_users_password(self, secret_id: str) -> None: ) # update the local unit admin password self.charm.config_manager.update_local_valkey_admin_password() - self.charm.cluster_manager.update_primary_auth() + if self.charm.state.unit_server.is_started: + self.charm.cluster_manager.update_primary_auth() except ( ValkeyACLLoadError, ValueError, diff --git a/src/statuses.py b/src/statuses.py index b6cd779..adf8c65 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -80,15 +80,15 @@ class ScaleDownStatuses(Enum): WAIT_FOR_LOCK = StatusObject( status="maintenance", - message="Waiting for lock to scale down ...", + message="Waiting for lock to scale down...", running="async", ) SCALING_DOWN = StatusObject( status="maintenance", - message="Scaling down ...", + message="Scaling down...", running="async", ) GOING_AWAY = StatusObject( status="maintenance", - message="Waiting for juju to remove the unit ...", + message="Waiting for juju to remove the unit...", ) From ba0ccc0f83fb63daae1c12ca2e0125dd2bbeb800 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Feb 2026 10:43:34 +0000 Subject: [PATCH 117/282] add k8s scaledown tests --- tests/integration/k8s/ha/test_scaling.py | 71 ++++++++++++++++++++++++ 1 file changed, 71 insertions(+) diff --git a/tests/integration/k8s/ha/test_scaling.py b/tests/integration/k8s/ha/test_scaling.py index 11daee8..128f4a0 100644 --- a/tests/integration/k8s/ha/test_scaling.py +++ b/tests/integration/k8s/ha/test_scaling.py @@ -84,3 +84,74 @@ async def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) + + +async def test_scale_down(juju: jubilant.Juju) -> None: + """Make sure scale down operations complete successfully.""" + number_of_slaves = await get_number_connected_slaves( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + assert number_of_slaves == NUM_UNITS - 1, ( + f"Expected {NUM_UNITS - 1} connected slaves, got {number_of_slaves}." + ) + + # scale down + juju.remove_unit(APP_NAME, num_units=1) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=60 + ) + ) + num_units = len(juju.status().get_units(APP_NAME)) + assert num_units == NUM_UNITS - 1, f"Expected {NUM_UNITS - 1} units, got {num_units}." + + number_of_slaves = await get_number_connected_slaves( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + assert number_of_slaves == NUM_UNITS - 2, ( + f"Expected {NUM_UNITS - 2} connected slaves, got {number_of_slaves}." + ) + + +async def test_scale_down_multiple_units(juju: jubilant.Juju) -> None: + """Make sure multiple scale down operations complete successfully.""" + number_current_units = len(juju.status().apps[APP_NAME].units) + juju.add_unit(APP_NAME, num_units=(NUM_UNITS + 1) - number_current_units) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, idle_period=10, unit_count=NUM_UNITS + 1 + ), + timeout=1200, + ) + + number_of_slaves = await get_number_connected_slaves( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + assert number_of_slaves == NUM_UNITS, ( + f"Expected {NUM_UNITS} connected slaves, got {number_of_slaves}." + ) + + # scale down multiple units + juju.remove_unit(APP_NAME, num_units=2) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=60 + ) + ) + num_units = len(juju.status().get_units(APP_NAME)) + assert num_units == NUM_UNITS - 1, f"Expected {NUM_UNITS - 1} units, got {num_units}." + + number_of_slaves = await get_number_connected_slaves( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + assert number_of_slaves == NUM_UNITS - 2, ( + f"Expected {NUM_UNITS - 2} connected slaves, got {number_of_slaves}." + ) From 9949da3fbd53cd9191cef2d70f9789d9f1f7e1e0 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Feb 2026 11:06:02 +0000 Subject: [PATCH 118/282] fix unit tests --- tests/unit/test_charm.py | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 95bce93..446cec7 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -437,7 +437,9 @@ def test_config_changed_non_leader_unit(cloud_spec): def test_config_changed_leader_unit_valkey_update_fails(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) - relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + relation = testing.PeerRelation( + id=1, endpoint=PEER_RELATION, local_unit_data={"start-state": "started"} + ) container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( @@ -459,7 +461,9 @@ def test_config_changed_leader_unit_valkey_update_fails(cloud_spec): def test_config_changed_leader_unit(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) - relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + relation = testing.PeerRelation( + id=1, endpoint=PEER_RELATION, local_unit_data={"start-state": "started"} + ) container = testing.Container(name=CONTAINER, can_connect=True) password_secret = testing.Secret( @@ -564,7 +568,9 @@ def test_change_password_secret_changed_non_leader_unit(cloud_spec): def test_change_password_secret_changed_non_leader_unit_not_successful(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) - relation = testing.PeerRelation(id=1, endpoint=PEER_RELATION) + relation = testing.PeerRelation( + id=1, endpoint=PEER_RELATION, local_unit_data={"start-state": "started"} + ) statuses_peer_relation = testing.PeerRelation(id=2, endpoint=STATUS_PEERS_RELATION) container = testing.Container(name=CONTAINER, can_connect=True) From d4cfb59aae23e3234c5f761d09b037438e94d994 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Feb 2026 12:23:14 +0000 Subject: [PATCH 119/282] handle scale down to 0 --- src/common/locks.py | 4 ++++ src/core/models.py | 10 +++++----- src/events/base_events.py | 27 ++++++++++++--------------- src/managers/cluster.py | 9 +++++---- src/managers/sentinel.py | 29 +++++++++++++++-------------- 5 files changed, 41 insertions(+), 38 deletions(-) diff --git a/src/common/locks.py b/src/common/locks.py index 2de3ae3..1aeb850 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -205,6 +205,10 @@ def request_lock(self, timeout: int | None = None) -> bool: ) return True + if len(self.charm.sentinel_manager.get_active_sentinel_ips(primary_ip)) == 1: + logger.debug("Last unit in the cluster scaling down. Lock will be skipped.") + return True + while True: try: if self.client.set( diff --git a/src/core/models.py b/src/core/models.py index ef307a3..223f734 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -122,11 +122,11 @@ def is_started(self) -> bool: @property def is_being_removed(self) -> bool: """Check if the unit is being removed from the cluster.""" - return ( - self.model.scale_down_state != ScaleDownState.NO_SCALE_DOWN.value - if self.model - else False - ) + return self.model.scale_down_state not in { + ScaleDownState.NO_SCALE_DOWN.value, + ScaleDownState.WAIT_FOR_LOCK.value, + ScaleDownState.WAIT_TO_FAILOVER.value, + } @property def is_active(self) -> bool: diff --git a/src/events/base_events.py b/src/events/base_events.py index ee6ead9..9c962e5 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -452,9 +452,9 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: statuses_state=self.charm.state.statuses, ) # if unit has primary then failover - if ( - primary_ip := self.charm.sentinel_manager.get_primary_ip() - ) == self.charm.state.bind_address: + primary_ip = self.charm.sentinel_manager.get_primary_ip() + active_sentinels = self.charm.sentinel_manager.get_active_sentinel_ips(primary_ip) + if primary_ip == self.charm.state.bind_address and len(active_sentinels) > 1: self.charm.state.unit_server.update( {"scale_down_state": ScaleDownState.WAIT_TO_FAILOVER} ) @@ -469,6 +469,7 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: # stop valkey and sentinel processes self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.STOP_SERVICES}) self.charm.workload.stop() + active_sentinels = [ip for ip in active_sentinels if ip != self.charm.state.bind_address] # reset sentinel states on other units self.charm.state.unit_server.update( @@ -477,18 +478,14 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: "start_state": StartState.NOT_STARTED.value, } ) - active_units = [ - ip - for ip in self.charm.sentinel_manager.get_active_sentinel_ips(primary_ip) - if ip != self.charm.state.bind_address - ] - logger.debug("Resetting sentinel states on active units: %s", active_units) - self.charm.sentinel_manager.reset_sentinel_states(active_units) - - # check health after scale down - self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.HEALTH_CHECK}) - self.charm.sentinel_manager.verify_expected_replica_count(active_units) + if active_sentinels: + logger.debug("Resetting sentinel states on active units: %s", active_sentinels) + self.charm.sentinel_manager.reset_sentinel_states(active_sentinels) + + # check health after scale down + self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.HEALTH_CHECK}) + self.charm.sentinel_manager.verify_expected_replica_count(active_sentinels) + scale_down_lock.release_lock() # release lock self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY}) - scale_down_lock.release_lock() diff --git a/src/managers/cluster.py b/src/managers/cluster.py index da6febf..7bbf9be 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -120,11 +120,12 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje if not self.state.cluster.model or not self.state.unit_server.model: return status_list or [CharmStatuses.ACTIVE_IDLE.value] - if start_status := self._get_start_status(): - status_list.append(start_status) + if scope == "unit": + if start_status := self._get_start_status(): + status_list.append(start_status) - if scale_down_status := self._get_scale_down_status(): - status_list.append(scale_down_status) + if scale_down_status := self._get_scale_down_status(): + status_list.append(scale_down_status) return status_list or [CharmStatuses.ACTIVE_IDLE.value] diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index dda1016..315d4c4 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -175,6 +175,7 @@ def reset_sentinel_states(self, sentinel_ips: list[str]) -> None: for sentinel_ip in sentinel_ips: try: + logger.debug("Resetting sentinel state on %s.", sentinel_ip) client.reset(hostname=sentinel_ip) except ValkeyWorkloadCommandError: logger.warning("Could not reset sentinel state on %s.", sentinel_ip) @@ -212,29 +213,29 @@ def target_sees_all_others(self, target_sentinel_ip: str, sentinel_ips: list[str workload=self.workload, ) - other_active_sentinels = [ip for ip in sentinel_ips if ip != target_sentinel_ip] + sentinel_ips_set = set(sentinel_ips) - {target_sentinel_ip} logger.debug( "Checking if sentinel at %s sees all other sentinels: %s", target_sentinel_ip, - other_active_sentinels, + sentinel_ips_set, ) - for sentinel_ip in other_active_sentinels: - try: - if sentinel_ip not in { - sentinel["ip"] - for sentinel in client.sentinels_primary(hostname=target_sentinel_ip) - }: - logger.debug( - f"Sentinel at {target_sentinel_ip} does not see sentinel at {sentinel_ip}" - ) - return False - except ValkeyWorkloadCommandError: + try: + discovered_sentinels = { + sentinel["ip"] + for sentinel in client.sentinels_primary(hostname=target_sentinel_ip) + } + if discovered_sentinels != sentinel_ips_set: logger.warning( - f"Could not query sentinel at {target_sentinel_ip} for sentinel discovery." + f"Sentinel at {target_sentinel_ip} sees sentinels {discovered_sentinels}, expected {sentinel_ips_set}." ) return False + except ValkeyWorkloadCommandError: + logger.warning( + f"Could not query sentinel at {target_sentinel_ip} for sentinel discovery." + ) + return False return True @retry( From ac4348b2ea68d602e1a9b5607481ef5808a51774 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Feb 2026 12:32:15 +0000 Subject: [PATCH 120/282] fix unit test --- tests/unit/test_charm.py | 1 - 1 file changed, 1 deletion(-) diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 446cec7..a5acf2a 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -142,7 +142,6 @@ def test_start_primary(cloud_spec): state_out = ctx.run(ctx.on.start(), state_in) assert status_is(state_out, StartStatuses.SERVICE_NOT_STARTED.value) - assert status_is(state_out, StartStatuses.SERVICE_NOT_STARTED.value, is_app=True) def test_start_non_primary(cloud_spec): From 3fed063aaf38bf77cc2fb954fdc808e27da227e7 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Feb 2026 12:44:40 +0000 Subject: [PATCH 121/282] add scaling down to 0 and back --- src/events/base_events.py | 5 --- tests/integration/k8s/ha/test_scaling.py | 47 +++++++++++++++++++++++- 2 files changed, 45 insertions(+), 7 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 9c962e5..e726e3f 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -267,11 +267,6 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: ) # update local unit admin password self.charm.config_manager.update_local_valkey_admin_password() - try: - self.charm.config_manager.set_acl_file() - except ValkeyWorkloadCommandError: - logger.error("Failed to write acl file") - raise def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: """Handle the config_changed event.""" diff --git a/tests/integration/k8s/ha/test_scaling.py b/tests/integration/k8s/ha/test_scaling.py index 128f4a0..74ce2d2 100644 --- a/tests/integration/k8s/ha/test_scaling.py +++ b/tests/integration/k8s/ha/test_scaling.py @@ -1,6 +1,7 @@ #!/usr/bin/env python3 # Copyright 2026 Canonical Ltd. # See LICENSE file for licensing details. +import asyncio import logging import jubilant @@ -101,7 +102,7 @@ async def test_scale_down(juju: jubilant.Juju) -> None: juju.remove_unit(APP_NAME, num_units=1) juju.wait( lambda status: are_apps_active_and_agents_idle( - status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=60 + status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=10 ) ) num_units = len(juju.status().get_units(APP_NAME)) @@ -141,7 +142,7 @@ async def test_scale_down_multiple_units(juju: jubilant.Juju) -> None: juju.remove_unit(APP_NAME, num_units=2) juju.wait( lambda status: are_apps_active_and_agents_idle( - status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=60 + status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=10 ) ) num_units = len(juju.status().get_units(APP_NAME)) @@ -155,3 +156,45 @@ async def test_scale_down_multiple_units(juju: jubilant.Juju) -> None: assert number_of_slaves == NUM_UNITS - 2, ( f"Expected {NUM_UNITS - 2} connected slaves, got {number_of_slaves}." ) + + +async def test_scale_to_zero_and_back(juju: jubilant.Juju, c_writes) -> None: + """Make sure that removing all units and then adding them again works.""" + # remove all remaining units + juju.remove_unit(APP_NAME, num_units=len(juju.status().apps[APP_NAME].units)) + juju.wait(lambda status: len(juju.status().get_units(APP_NAME)) == 0) + + # scale up again + juju.add_unit(APP_NAME, num_units=NUM_UNITS) + + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, unit_count=NUM_UNITS, idle_period=10 + ), + timeout=1200, + ) + + hostnames = get_cluster_hostnames(juju, APP_NAME) + + connected_slaves = await get_number_connected_slaves( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + assert connected_slaves == NUM_UNITS - 1, ( + f"Expected {NUM_UNITS - 1} connected slaves, got {connected_slaves}." + ) + c_writes.start() + await asyncio.sleep(10) # let the continuous writes write some data + await assert_continuous_writes_increasing( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + logger.info("Stopping continuous writes after scale up test.") + logger.info(await c_writes.async_stop()) + assert_continuous_writes_consistent( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) From e2a49641d637cc79db819b6478050fb45f88f3bd Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Feb 2026 13:04:56 +0000 Subject: [PATCH 122/282] clear cw --- tests/integration/k8s/ha/test_scaling.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tests/integration/k8s/ha/test_scaling.py b/tests/integration/k8s/ha/test_scaling.py index 74ce2d2..c3c5381 100644 --- a/tests/integration/k8s/ha/test_scaling.py +++ b/tests/integration/k8s/ha/test_scaling.py @@ -184,6 +184,7 @@ async def test_scale_to_zero_and_back(juju: jubilant.Juju, c_writes) -> None: assert connected_slaves == NUM_UNITS - 1, ( f"Expected {NUM_UNITS - 1} connected slaves, got {connected_slaves}." ) + await c_writes.async_clear() c_writes.start() await asyncio.sleep(10) # let the continuous writes write some data await assert_continuous_writes_increasing( @@ -198,3 +199,4 @@ async def test_scale_to_zero_and_back(juju: jubilant.Juju, c_writes) -> None: username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) + await c_writes.async_clear() From 72882924d89eafdafb9ff5c764e22142316aaafa Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Feb 2026 13:06:49 +0000 Subject: [PATCH 123/282] fix linter --- tests/unit/test_scaledown.py | 1 - 1 file changed, 1 deletion(-) diff --git a/tests/unit/test_scaledown.py b/tests/unit/test_scaledown.py index 46db2d4..6ddc1c6 100644 --- a/tests/unit/test_scaledown.py +++ b/tests/unit/test_scaledown.py @@ -14,7 +14,6 @@ def get_3_unit_peer_relation(): - """Helper function to create a peer relation with 3 units.""" return testing.PeerRelation( id=1, endpoint=PEER_RELATION, From b5210892acd154056eafe2c2305c3e4c14cf6baa Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Feb 2026 13:47:38 +0000 Subject: [PATCH 124/282] add remove app test --- tests/integration/k8s/ha/test_scaling.py | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/tests/integration/k8s/ha/test_scaling.py b/tests/integration/k8s/ha/test_scaling.py index c3c5381..5a16116 100644 --- a/tests/integration/k8s/ha/test_scaling.py +++ b/tests/integration/k8s/ha/test_scaling.py @@ -200,3 +200,14 @@ async def test_scale_to_zero_and_back(juju: jubilant.Juju, c_writes) -> None: password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) await c_writes.async_clear() + + +def test_remove_application(juju: jubilant.Juju) -> None: + """Make sure the application can be removed.""" + juju.remove_application(APP_NAME) + + juju.wait( + lambda status: APP_NAME not in status.apps, + timeout=600, + delay=5, + ) From e6267cb94f8762a8026ecb1763b215f9494872d1 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 27 Feb 2026 07:32:48 +0000 Subject: [PATCH 125/282] copilot feedback --- src/common/client.py | 12 ++++++++---- src/core/models.py | 1 - src/events/base_events.py | 2 +- tests/unit/test_scaledown.py | 22 +++++++++++----------- 4 files changed, 20 insertions(+), 17 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index 7c5e4b0..a731018 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -149,7 +149,9 @@ def info_persistence(self, hostname: str) -> dict[str, str] | None: values[values_parts[0]] = values_parts[1] return values - def set(self, hostname: str, key: str, value: str, additional_args: list[str] = []) -> bool: + def set( + self, hostname: str, key: str, value: str, additional_args: list[str] | None = None + ) -> bool: """Set a key-value pair on the Valkey server. Args: @@ -164,6 +166,8 @@ def set(self, hostname: str, key: str, value: str, additional_args: list[str] = Raises: ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. """ + if additional_args is None: + additional_args = [] return ( self.exec_cli_command(["set", key, value] + additional_args, hostname=hostname) == "OK" ) @@ -200,13 +204,13 @@ def delifeq(self, hostname: str, key: str, value: str) -> str: return self.exec_cli_command(["delifeq", key, value], hostname=hostname, json_output=False) def role(self, hostname: str) -> list[str | Any]: - """Check if the replica is synced with the primary. + """Get the role information of the Valkey server. Args: hostname (str): The hostname to connect to. Returns: - bool: True if the replica is synced with the primary, False otherwise. + list[str | Any]: The role information retrieved from the server. Raises: ValkeyWorkloadCommandError: If the CLI command fails to execute or returns unexpected output. @@ -290,7 +294,7 @@ def get_primary_addr_by_name(self, hostname: str) -> str: )[0] def primary(self, hostname: str) -> dict[str, str]: - r"""Get the primary info from the sentinel. + """Get the primary info from the sentinel. Args: hostname (str): The hostname to connect to. diff --git a/src/core/models.py b/src/core/models.py index 223f734..0a185e3 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -37,7 +37,6 @@ class PeerAppModel(PeerModel): charmed_sentinel_peers_password: InternalUsersSecret = Field(default="") charmed_sentinel_operator_password: InternalUsersSecret = Field(default="") start_member: str = Field(default="") - scale_down_member: str = Field(default="") class PeerUnitModel(PeerModel): diff --git a/src/events/base_events.py b/src/events/base_events.py index e726e3f..cc74d4e 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -438,7 +438,7 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: scope="unit", component=self.charm.cluster_manager.name, ) - # TODO consider quorom when removing unit + # TODO consider quorum when removing unit self.charm.status.set_running_status( ScaleDownStatuses.SCALING_DOWN.value, diff --git a/tests/unit/test_scaledown.py b/tests/unit/test_scaledown.py index 6ddc1c6..e6e3f16 100644 --- a/tests/unit/test_scaledown.py +++ b/tests/unit/test_scaledown.py @@ -38,13 +38,13 @@ def test_other_unit_has_lock(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = get_3_unit_peer_relation() container = testing.Container(name=CONTAINER, can_connect=True) - data_stroage = testing.Storage(name="data") + data_storage = testing.Storage(name="data") state_in = testing.State( model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), relations={relation}, leader=True, containers={container}, - storages={data_stroage}, + storages={data_storage}, ) with ( @@ -52,22 +52,22 @@ def test_other_unit_has_lock(cloud_spec): ): # expect raised exception due to lock not being acquired with pytest.raises(testing.errors.UncaughtCharmError) as exc_info: - ctx.run(ctx.on.storage_detaching(data_stroage), state_in) + ctx.run(ctx.on.storage_detaching(data_storage), state_in) assert "RequestingLockTimedOutError" in str(exc_info.value) def test_non_primary(cloud_spec): - """Test that if another unit has the lock, then the lock is not acquired.""" + """Test scale-down behavior when this unit is not the primary but successfully acquires the lock.""" ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = get_3_unit_peer_relation() container = testing.Container(name=CONTAINER, can_connect=True) - data_stroage = testing.Storage(name="data") + data_strorage = testing.Storage(name="data") state_in = testing.State( model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), relations={relation}, leader=True, containers={container}, - storages={data_stroage}, + storages={data_strorage}, ) with ( @@ -86,7 +86,7 @@ def test_non_primary(cloud_spec): return_value=["10.0.1.1", "10.0.1.2", "10.0.1.3"], ), ): - state_out = ctx.run(ctx.on.storage_detaching(data_stroage), state_in) + state_out = ctx.run(ctx.on.storage_detaching(data_strorage), state_in) mock_stop.assert_called_once() mock_reset_sentinel_states.assert_called_once() mock_verify_expected_replica_count.assert_called_once() @@ -94,17 +94,17 @@ def test_non_primary(cloud_spec): def test_primary(cloud_spec): - """Test that if another unit has the lock, then the lock is not acquired.""" + """Test scale-down behavior when this unit is the primary and successfully acquires the lock.""" ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = get_3_unit_peer_relation() container = testing.Container(name=CONTAINER, can_connect=True) - data_stroage = testing.Storage(name="data") + data_strorage = testing.Storage(name="data") state_in = testing.State( model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), relations={relation}, leader=True, containers={container}, - storages={data_stroage}, + storages={data_strorage}, ) with ( @@ -128,7 +128,7 @@ def test_primary(cloud_spec): return_value=["10.0.1.1", "10.0.1.2", "10.0.1.3"], ), ): - state_out = ctx.run(ctx.on.storage_detaching(data_stroage), state_in) + state_out = ctx.run(ctx.on.storage_detaching(data_strorage), state_in) mock_failover.assert_called_once() mock_stop.assert_called_once() mock_reset_sentinel_states.assert_called_once() From f1030918579fc1fc56a9bcb82245ed00253ab835 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 27 Feb 2026 10:31:56 +0000 Subject: [PATCH 126/282] port fix from tls for leader elected event --- src/events/base_events.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index cc74d4e..ef8b7cd 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -224,7 +224,7 @@ def _on_update_status(self, event: ops.UpdateStatusEvent) -> None: def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: """Handle the leader-elected event.""" - if not self.charm.state.peer_relation: + if not (self.charm.state.peer_relation and self.charm.workload.can_connect): event.defer() return From a8f8912e4d8437f5c36994e08fad1b1fe0a2a480 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 3 Mar 2026 07:05:00 +0000 Subject: [PATCH 127/282] cw use databag to filter units and use helper to remove units on both substrates --- tests/integration/continuous_writes.py | 44 +++++-- tests/integration/helpers.py | 61 +++++++++- tests/integration/k8s/ha/test_scaling.py | 23 ++-- tests/integration/vm/ha/test_scaling.py | 142 ++++++++++++++++++++++- tests/integration/vm/test_charm.py | 3 +- 5 files changed, 254 insertions(+), 19 deletions(-) diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index ed87368..267c3d7 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -6,6 +6,7 @@ import logging import multiprocessing import queue +import time from contextlib import asynccontextmanager from multiprocessing import log_to_stderr from pathlib import Path @@ -13,7 +14,12 @@ from typing import Optional import jubilant -from glide import GlideClient, GlideClientConfiguration, NodeAddress, ServerCredentials +from glide import ( + GlideClient, + GlideClientConfiguration, + NodeAddress, + ServerCredentials, +) from tenacity import ( retry, stop_after_attempt, @@ -22,7 +28,7 @@ ) from literals import CharmUsers -from tests.integration.helpers import get_cluster_hostnames, get_password +from tests.integration.helpers import get_data_bag, get_password logger = logging.getLogger(__name__) @@ -31,6 +37,18 @@ class WriteFailedError(Exception): """Raised when a single write operation has failed.""" +def get_active_hostnames(juju: jubilant.Juju, app_name: str) -> str: + """Get hostnames of units in started state and not marked for scale down.""" + return ",".join( + [ + unit["private-ip"] + for unit in get_data_bag(juju, app_name, "valkey-peers").values() + if unit.get("start-state", "") == "started" + and unit.get("scale-down-state", None) is None + ] + ) + + class ContinuousWrites: """Utility class for managing continuous async writes to Valkey using GLIDE.""" @@ -54,7 +72,7 @@ def __init__( def _get_config(self) -> SimpleNamespace: """Fetch current cluster configuration from Juju.""" return SimpleNamespace( - endpoints=",".join(get_cluster_hostnames(self._juju, app_name=self._app)), + endpoints=get_active_hostnames(self._juju, self._app), valkey_password=get_password(self._juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -70,7 +88,7 @@ async def _create_glide_client(self, config: Optional[SimpleNamespace] = None) - glide_config = GlideClientConfiguration( addresses=addresses, client_name="continuous_writes_client", - request_timeout=5000, + request_timeout=250, credentials=credentials, ) @@ -233,7 +251,7 @@ async def _make_client(conf: SimpleNamespace) -> GlideClient: glide_config = GlideClientConfiguration( addresses=addresses, client_name="continuous_writes_worker", - request_timeout=5000, + request_timeout=250, credentials=credentials, ) return await GlideClient.create(glide_config) @@ -262,6 +280,7 @@ async def with_client(conf: SimpleNamespace): try: proc_logger.info(f"Writing value: {current_val}") + proc_logger.info(f"Current endpoints={config.endpoints}") async with with_client(config) as client: if not ( res := await asyncio.wait_for( @@ -291,7 +310,18 @@ async def with_client(conf: SimpleNamespace): cw = ContinuousWrites(juju=juju_env, app="valkey", in_between_sleep=0.5) cw.clear() cw.start() - print("Continuous writes started. Press Enter to stop...") - input() + # stop on ctrl + C or after some time + hostnames = get_active_hostnames(juju_env, "valkey") + try: + while True: + time.sleep(1) + if new_hostnames := get_active_hostnames(juju_env, "valkey") != hostnames: + logger.info( + f"Hostnames changed from {hostnames} to {new_hostnames}, updating continuous writes client." + ) + hostnames = new_hostnames + cw.update() + except KeyboardInterrupt: + pass stats = cw.clear() print(f"Stopped. Stats: {stats}") diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index f6b677c..a87879d 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -2,6 +2,7 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. +import json import logging import os import re @@ -10,7 +11,7 @@ from contextlib import asynccontextmanager, contextmanager from datetime import datetime, timedelta from pathlib import Path -from typing import List, NamedTuple +from typing import List, Literal, NamedTuple import jubilant import yaml @@ -31,6 +32,7 @@ INTERNAL_USERS_SECRET_LABEL_SUFFIX, PEER_RELATION, CharmUsers, + Substrate, ) logger = logging.getLogger(__name__) @@ -556,3 +558,60 @@ async def auth_test(hostnames: list[str], username: str | None, password: str | raise WrongPassError("Authentication failed: WRONGPASS error") from e else: raise e + + +def remove_number_units( + juju: jubilant.Juju, app: str, num_units: int, substrate: Substrate +) -> None: + """Remove a specified number of units from an application. + + Args: + juju: An instance of Jubilant's Juju class on which to run Juju commands + app: The name of the application from which to remove units + num_units: The number of units to remove + substrate: The substrate type ("k8s" or "vm") + """ + match substrate: + case "k8s": + juju.remove_unit(app, num_units=num_units) + case "vm": + # get units names + unit_names = list(juju.status().get_units(app)) + # remove units by name until num_units have been removed + juju.remove_unit(*unit_names[:num_units]) + + +def get_data_bag( + juju: jubilant.Juju, + app_name: str, + relation_name: str, + scope: Literal["app", "unit"] = "unit", +) -> dict: + """Get the data bag for a given unit. + + Args: + juju: An instance of Jubilant's Juju class on which to run Juju commands + app_name: The name of the application whose data bag to retrieve + relation_name: The name of the relation for which to retrieve the data bag + scope: Specify whether to get the data bag for the app or unit + = + Returns: + The data bag for the specified unit. + """ + unit_name = next(iter(juju.status().get_units(app_name))) + unit_info = juju.cli("show-unit", unit_name, "--format", "json") + json_info = json.loads(unit_info) + relation = next( + rel for rel in json_info[unit_name]["relation-info"] if rel["endpoint"] == relation_name + ) + if not relation: + raise ValueError(f"Relation {relation_name} not found for unit {unit_name}") + if scope == "app": + return relation["application-data"] + local_data = relation["local-unit"]["data"] + remote_data = ( + {u_name: data["data"] for u_name, data in relation["related-units"].items()} + if relation.get("related-units") + else {} + ) + return {unit_name: local_data} | remote_data diff --git a/tests/integration/k8s/ha/test_scaling.py b/tests/integration/k8s/ha/test_scaling.py index 5a16116..464ea4a 100644 --- a/tests/integration/k8s/ha/test_scaling.py +++ b/tests/integration/k8s/ha/test_scaling.py @@ -6,7 +6,7 @@ import jubilant -from literals import CharmUsers +from literals import CharmUsers, Substrate from tests.integration.cw_helpers import ( assert_continuous_writes_consistent, assert_continuous_writes_increasing, @@ -18,6 +18,7 @@ get_cluster_hostnames, get_number_connected_slaves, get_password, + remove_number_units, seed_valkey, ) @@ -28,9 +29,14 @@ TEST_VALUE = "test_value" -def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: +def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) -> None: """Build the charm-under-test and deploy it with three units.""" - juju.deploy(charm, resources=IMAGE_RESOURCE, num_units=1, trust=True) + juju.deploy( + charm, + resources=IMAGE_RESOURCE if substrate == Substrate.K8S else None, + num_units=1, + trust=True, + ) juju.wait( lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), timeout=600, @@ -87,7 +93,7 @@ async def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: ) -async def test_scale_down(juju: jubilant.Juju) -> None: +async def test_scale_down(juju: jubilant.Juju, substrate: Substrate) -> None: """Make sure scale down operations complete successfully.""" number_of_slaves = await get_number_connected_slaves( hostnames=get_cluster_hostnames(juju, APP_NAME), @@ -99,7 +105,7 @@ async def test_scale_down(juju: jubilant.Juju) -> None: ) # scale down - juju.remove_unit(APP_NAME, num_units=1) + remove_number_units(juju, APP_NAME, num_units=1, substrate=substrate) juju.wait( lambda status: are_apps_active_and_agents_idle( status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=10 @@ -139,7 +145,8 @@ async def test_scale_down_multiple_units(juju: jubilant.Juju) -> None: ) # scale down multiple units - juju.remove_unit(APP_NAME, num_units=2) + remove_number_units(juju, APP_NAME, num_units=2, substrate=Substrate.K8S) + juju.wait( lambda status: are_apps_active_and_agents_idle( status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=10 @@ -161,7 +168,9 @@ async def test_scale_down_multiple_units(juju: jubilant.Juju) -> None: async def test_scale_to_zero_and_back(juju: jubilant.Juju, c_writes) -> None: """Make sure that removing all units and then adding them again works.""" # remove all remaining units - juju.remove_unit(APP_NAME, num_units=len(juju.status().apps[APP_NAME].units)) + remove_number_units( + juju, APP_NAME, num_units=len(juju.status().apps[APP_NAME].units), substrate=Substrate.K8S + ) juju.wait(lambda status: len(juju.status().get_units(APP_NAME)) == 0) # scale up again diff --git a/tests/integration/vm/ha/test_scaling.py b/tests/integration/vm/ha/test_scaling.py index 3b33fd5..c6ddc57 100644 --- a/tests/integration/vm/ha/test_scaling.py +++ b/tests/integration/vm/ha/test_scaling.py @@ -1,21 +1,24 @@ #!/usr/bin/env python3 # Copyright 2026 Canonical Ltd. # See LICENSE file for licensing details. +import asyncio import logging import jubilant -from literals import CharmUsers +from literals import CharmUsers, Substrate from tests.integration.cw_helpers import ( assert_continuous_writes_consistent, assert_continuous_writes_increasing, ) from tests.integration.helpers import ( APP_NAME, + IMAGE_RESOURCE, are_apps_active_and_agents_idle, get_cluster_hostnames, get_number_connected_slaves, get_password, + remove_number_units, seed_valkey, ) @@ -26,9 +29,14 @@ TEST_VALUE = "test_value" -def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: +def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) -> None: """Build the charm-under-test and deploy it with three units.""" - juju.deploy(charm, num_units=1, trust=True) + juju.deploy( + charm, + resources=IMAGE_RESOURCE if substrate == Substrate.K8S else None, + num_units=1, + trust=True, + ) juju.wait( lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), timeout=600, @@ -83,3 +91,131 @@ async def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) + + +async def test_scale_down(juju: jubilant.Juju, substrate: Substrate) -> None: + """Make sure scale down operations complete successfully.""" + number_of_slaves = await get_number_connected_slaves( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + assert number_of_slaves == NUM_UNITS - 1, ( + f"Expected {NUM_UNITS - 1} connected slaves, got {number_of_slaves}." + ) + + # scale down + remove_number_units(juju, APP_NAME, num_units=1, substrate=substrate) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=10 + ) + ) + num_units = len(juju.status().get_units(APP_NAME)) + assert num_units == NUM_UNITS - 1, f"Expected {NUM_UNITS - 1} units, got {num_units}." + + number_of_slaves = await get_number_connected_slaves( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + assert number_of_slaves == NUM_UNITS - 2, ( + f"Expected {NUM_UNITS - 2} connected slaves, got {number_of_slaves}." + ) + + +async def test_scale_down_multiple_units(juju: jubilant.Juju, substrate: Substrate) -> None: + """Make sure multiple scale down operations complete successfully.""" + number_current_units = len(juju.status().apps[APP_NAME].units) + juju.add_unit(APP_NAME, num_units=(NUM_UNITS + 1) - number_current_units) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, idle_period=10, unit_count=NUM_UNITS + 1 + ), + timeout=1200, + ) + + number_of_slaves = await get_number_connected_slaves( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + assert number_of_slaves == NUM_UNITS, ( + f"Expected {NUM_UNITS} connected slaves, got {number_of_slaves}." + ) + + # scale down multiple units + remove_number_units(juju, APP_NAME, num_units=2, substrate=substrate) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=10 + ) + ) + num_units = len(juju.status().get_units(APP_NAME)) + assert num_units == NUM_UNITS - 1, f"Expected {NUM_UNITS - 1} units, got {num_units}." + + number_of_slaves = await get_number_connected_slaves( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + assert number_of_slaves == NUM_UNITS - 2, ( + f"Expected {NUM_UNITS - 2} connected slaves, got {number_of_slaves}." + ) + + +async def test_scale_to_zero_and_back(juju: jubilant.Juju, c_writes, substrate: Substrate) -> None: + """Make sure that removing all units and then adding them again works.""" + # remove all remaining units + remove_number_units( + juju, APP_NAME, num_units=len(juju.status().apps[APP_NAME].units), substrate=substrate + ) + juju.wait(lambda status: len(juju.status().get_units(APP_NAME)) == 0) + + # scale up again + juju.add_unit(APP_NAME, num_units=NUM_UNITS) + + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, unit_count=NUM_UNITS, idle_period=10 + ), + timeout=1200, + ) + + hostnames = get_cluster_hostnames(juju, APP_NAME) + + connected_slaves = await get_number_connected_slaves( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + assert connected_slaves == NUM_UNITS - 1, ( + f"Expected {NUM_UNITS - 1} connected slaves, got {connected_slaves}." + ) + await c_writes.async_clear() + c_writes.start() + await asyncio.sleep(10) # let the continuous writes write some data + await assert_continuous_writes_increasing( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + logger.info("Stopping continuous writes after scale up test.") + logger.info(await c_writes.async_stop()) + assert_continuous_writes_consistent( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + await c_writes.async_clear() + + +def test_remove_application(juju: jubilant.Juju) -> None: + """Make sure the application can be removed.""" + juju.remove_application(APP_NAME) + + juju.wait( + lambda status: APP_NAME not in status.apps, + timeout=600, + delay=5, + ) diff --git a/tests/integration/vm/test_charm.py b/tests/integration/vm/test_charm.py index df4b6ef..576eee2 100644 --- a/tests/integration/vm/test_charm.py +++ b/tests/integration/vm/test_charm.py @@ -13,6 +13,7 @@ from statuses import CharmStatuses, ClusterStatuses from tests.integration.helpers import ( APP_NAME, + IMAGE_RESOURCE, INTERNAL_USERS_SECRET_LABEL, NoAuthError, WrongPassError, @@ -39,7 +40,7 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju) -> None: """Build the charm-under-test and deploy it with three units.""" - juju.deploy(charm, num_units=NUM_UNITS, trust=True) + juju.deploy(charm, resources=IMAGE_RESOURCE, num_units=NUM_UNITS, trust=True) juju.wait( lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), timeout=600, From 7ea81752fb3a46e3c10137c72501229afbb5ee5f Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 3 Mar 2026 07:36:16 +0000 Subject: [PATCH 128/282] add c_writes to scale down --- tests/integration/ha/test_scaling.py | 51 ++++++++++++++++++++++++++-- 1 file changed, 48 insertions(+), 3 deletions(-) diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index 464ea4a..33e15ad 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -93,7 +93,7 @@ async def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: ) -async def test_scale_down(juju: jubilant.Juju, substrate: Substrate) -> None: +async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_writes) -> None: """Make sure scale down operations complete successfully.""" number_of_slaves = await get_number_connected_slaves( hostnames=get_cluster_hostnames(juju, APP_NAME), @@ -104,6 +104,10 @@ async def test_scale_down(juju: jubilant.Juju, substrate: Substrate) -> None: f"Expected {NUM_UNITS - 1} connected slaves, got {number_of_slaves}." ) + await c_writes.async_clear() + c_writes.start() + await asyncio.sleep(10) # let the continuous writes write some data + # scale down remove_number_units(juju, APP_NAME, num_units=1, substrate=substrate) juju.wait( @@ -123,8 +127,28 @@ async def test_scale_down(juju: jubilant.Juju, substrate: Substrate) -> None: f"Expected {NUM_UNITS - 2} connected slaves, got {number_of_slaves}." ) + # update hostnames after scale down + c_writes.update() + + await assert_continuous_writes_increasing( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + + logger.info("Stopping continuous writes after scale up test.") + logger.info(await c_writes.async_stop()) + + assert_continuous_writes_consistent( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + -async def test_scale_down_multiple_units(juju: jubilant.Juju) -> None: +async def test_scale_down_multiple_units( + juju: jubilant.Juju, substrate: Substrate, c_writes +) -> None: """Make sure multiple scale down operations complete successfully.""" number_current_units = len(juju.status().apps[APP_NAME].units) juju.add_unit(APP_NAME, num_units=(NUM_UNITS + 1) - number_current_units) @@ -144,8 +168,12 @@ async def test_scale_down_multiple_units(juju: jubilant.Juju) -> None: f"Expected {NUM_UNITS} connected slaves, got {number_of_slaves}." ) + await c_writes.async_clear() + c_writes.start() + await asyncio.sleep(10) # let the continuous writes write some data + # scale down multiple units - remove_number_units(juju, APP_NAME, num_units=2, substrate=Substrate.K8S) + remove_number_units(juju, APP_NAME, num_units=2, substrate=substrate) juju.wait( lambda status: are_apps_active_and_agents_idle( @@ -164,6 +192,23 @@ async def test_scale_down_multiple_units(juju: jubilant.Juju) -> None: f"Expected {NUM_UNITS - 2} connected slaves, got {number_of_slaves}." ) + c_writes.update() + + await assert_continuous_writes_increasing( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + + logger.info("Stopping continuous writes after scale down test.") + logger.info(await c_writes.async_stop()) + + assert_continuous_writes_consistent( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + async def test_scale_to_zero_and_back(juju: jubilant.Juju, c_writes) -> None: """Make sure that removing all units and then adding them again works.""" From 64bb344378f6c57949a2a2d9908203977821dc27 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 3 Mar 2026 07:36:58 +0000 Subject: [PATCH 129/282] fail faster if any hostname is down --- tests/integration/continuous_writes.py | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index 267c3d7..129daaa 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -15,6 +15,7 @@ import jubilant from glide import ( + BackoffStrategy, GlideClient, GlideClientConfiguration, NodeAddress, @@ -90,6 +91,7 @@ async def _create_glide_client(self, config: Optional[SimpleNamespace] = None) - client_name="continuous_writes_client", request_timeout=250, credentials=credentials, + reconnect_strategy=BackoffStrategy(num_of_retries=1, factor=50, exponent_base=2), ) return await GlideClient.create(glide_config) @@ -253,6 +255,7 @@ async def _make_client(conf: SimpleNamespace) -> GlideClient: client_name="continuous_writes_worker", request_timeout=250, credentials=credentials, + reconnect_strategy=BackoffStrategy(num_of_retries=1, factor=50, exponent_base=2), ) return await GlideClient.create(glide_config) From 320d17d3901f78fdb8bbccb11dfb7cfa3aef7378 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 3 Mar 2026 07:39:03 +0000 Subject: [PATCH 130/282] rename tests so we can easily run all scale down tests using -k --- tests/integration/ha/test_scaling.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index 33e15ad..8ee6645 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -210,7 +210,7 @@ async def test_scale_down_multiple_units( ) -async def test_scale_to_zero_and_back(juju: jubilant.Juju, c_writes) -> None: +async def test_scale_down_to_zero_and_back(juju: jubilant.Juju, c_writes) -> None: """Make sure that removing all units and then adding them again works.""" # remove all remaining units remove_number_units( @@ -256,7 +256,7 @@ async def test_scale_to_zero_and_back(juju: jubilant.Juju, c_writes) -> None: await c_writes.async_clear() -def test_remove_application(juju: jubilant.Juju) -> None: +def test_scale_down_remove_application(juju: jubilant.Juju) -> None: """Make sure the application can be removed.""" juju.remove_application(APP_NAME) From ce045e41278d915ce1e719611622e51b3f018656 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 3 Mar 2026 08:18:47 +0000 Subject: [PATCH 131/282] vm agnostic test --- tests/integration/ha/test_scaling.py | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index 8ee6645..bad6ec7 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -210,11 +210,13 @@ async def test_scale_down_multiple_units( ) -async def test_scale_down_to_zero_and_back(juju: jubilant.Juju, c_writes) -> None: +async def test_scale_down_to_zero_and_back( + juju: jubilant.Juju, substrate: Substrate, c_writes +) -> None: """Make sure that removing all units and then adding them again works.""" # remove all remaining units remove_number_units( - juju, APP_NAME, num_units=len(juju.status().apps[APP_NAME].units), substrate=Substrate.K8S + juju, APP_NAME, num_units=len(juju.status().apps[APP_NAME].units), substrate=substrate ) juju.wait(lambda status: len(juju.status().get_units(APP_NAME)) == 0) From 71008c567a34d337e1705bd6c2daac0946edee4e Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 3 Mar 2026 14:24:54 +0000 Subject: [PATCH 132/282] add scale down primary test on vm --- tests/integration/ha/test_scaling.py | 45 ++++++++++++++++++++++++++++ tests/integration/helpers.py | 26 +++++++++------- 2 files changed, 61 insertions(+), 10 deletions(-) diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index bad6ec7..c992103 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -5,6 +5,7 @@ import logging import jubilant +import pytest from literals import CharmUsers, Substrate from tests.integration.cw_helpers import ( @@ -18,6 +19,7 @@ get_cluster_hostnames, get_number_connected_slaves, get_password, + get_primary_ip, remove_number_units, seed_valkey, ) @@ -258,6 +260,49 @@ async def test_scale_down_to_zero_and_back( await c_writes.async_clear() +async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_writes) -> None: + """Make sure that removing the primary unit triggers a new primary to be elected and the cluster remains available.""" + if substrate == Substrate.K8S: + pytest.skip("Primary unit can only targeted on VM") + + await c_writes.async_clear() + c_writes.start() + primary_ip = get_primary_ip(juju, APP_NAME) + primary_unit = next( + unit + for unit, unit_value in juju.status().get_units(APP_NAME).items() + if unit_value.public_address == primary_ip + ) + assert primary_unit is not None, "Failed to identify primary unit for scale down test." + logger.debug( + f"Identified primary unit {primary_unit} with IP {primary_ip} for scale down test." + ) + juju.remove_unit(primary_unit) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=10 + ) + ) + c_writes.update() + new_primary_ip = get_primary_ip(juju, APP_NAME) + assert new_primary_ip != primary_ip, "Primary IP did not change after removing primary unit." + logger.debug(f"New primary IP after scale down is {new_primary_ip}.") + hostnames = get_cluster_hostnames(juju, APP_NAME) + await assert_continuous_writes_increasing( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + logger.info("Stopping continuous writes after primary scale down test.") + logger.info(await c_writes.async_stop()) + assert_continuous_writes_consistent( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + await c_writes.async_clear() + + def test_scale_down_remove_application(juju: jubilant.Juju) -> None: """Make sure the application can be removed.""" juju.remove_application(APP_NAME) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index a87879d..0378b33 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -323,19 +323,27 @@ def fast_forward(juju: jubilant.Juju): juju.model_config({"update-status-hook-interval": old}) -async def get_primary_ip(juju: jubilant.Juju, app: str) -> str: +def get_primary_ip(juju: jubilant.Juju, app: str) -> str: """Get the primary node of the Valkey cluster. Returns: The IP address of the primary node. """ hostnames = get_cluster_hostnames(juju, app) - async with create_valkey_client([hostnames[0]], password=get_password(juju)) as client: - info = await client.custom_command(["client", "info"]) - match = re.search(r"laddr=([\d\.]+):", info.decode()) - if match: - return match.group(1) - raise RuntimeError("Primary IP not found in client info output") + replication_info = exec_valkey_cli( + hostnames[0], + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju), + command="info replication", + ).stdout + # if master then we return the hostname + if "role:master" in replication_info: + return hostnames[0] + # extract ip + match = re.search(r"master_host:([^\s]+)", replication_info) + if not match: + raise ValueError("Could not find master_host in replication info") + return match.group(1) def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN) -> str: @@ -409,9 +417,7 @@ def exec_valkey_cli( hostname: str, username: str, password: str, command: str ) -> valkey_cli_result: """Execute a Valkey CLI command and returns the output as a string.""" - command = ( - f"valkey-cli -h {hostname} -p {CLIENT_PORT} --user {username} --pass {password} {command}" - ) + command = f"valkey-cli --no-auth-warning -h {hostname} -p {CLIENT_PORT} --user {username} --pass {password} {command}" result = subprocess.run( command.split(), check=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True ) From 3fef2bf5a7be2fd57063aeafa22608968a0a0e2c Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 4 Mar 2026 04:39:26 +0000 Subject: [PATCH 133/282] feedback from rene --- src/common/client.py | 2 +- src/common/locks.py | 21 ++++++------- src/core/models.py | 9 +++--- src/events/base_events.py | 3 +- src/literals.py | 2 +- src/workload_k8s.py | 7 ++++- tests/integration/conftest.py | 2 +- tests/integration/continuous_writes.py | 1 - tests/integration/ha/test_scaling.py | 42 +++++++++++++------------- tests/integration/helpers.py | 10 +++--- 10 files changed, 52 insertions(+), 47 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index a731018..66760f1 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -264,7 +264,7 @@ def __init__( super().__init__(username, password, workload) def ping(self, hostname: str) -> bool: - """Ping the Valkey server to check if it's responsive. + """Ping the Sentinel server to check if it's responsive. Args: hostname (str): The hostname to connect to. diff --git a/src/common/locks.py b/src/common/locks.py index 1aeb850..dd03b48 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -1,7 +1,7 @@ # Copyright 2026 Canonical Ltd. # See LICENSE file for licensing details. -"""Collection of lock names for cluster operations.""" +"""Collection of locks for cluster operations.""" import logging import time @@ -42,7 +42,7 @@ def release_lock(self) -> bool: @property @abstractmethod - def do_i_hold_lock(self) -> bool: + def is_held_by_this_unit(self) -> bool: """Check if the local unit holds the lock.""" raise NotImplementedError @@ -90,7 +90,7 @@ def is_lock_free_to_give(self) -> bool: raise NotImplementedError @property - def do_i_hold_lock(self) -> bool: + def is_held_by_this_unit(self) -> bool: """Check if the local unit holds the start lock.""" return self.state.unit_server.unit_name == getattr( self.state.cluster.model, self.member_with_lock_atr_name, "" @@ -109,7 +109,7 @@ def request_lock(self) -> bool: ) self.process() - return self.do_i_hold_lock + return self.is_held_by_this_unit def release_lock(self) -> bool: """Release the lock from the local unit.""" @@ -135,10 +135,10 @@ def process(self) -> None: if self.is_lock_free_to_give: next_unit = self.next_unit_to_give_lock self.state.cluster.update({self.member_with_lock_atr_name: next_unit}) - logger.debug(f"Gave {self.name} lock to {next_unit}") - logger.debug( - f"{self.name} lock is currently held by {getattr(self.state.cluster.model, self.member_with_lock_atr_name)}" - ) + logger.debug("Gave %s to %s", self.name, next_unit) + + if unit_with_lock := self.state.cluster.model[self.member_with_lock_atr_name]: + logger.debug("%s is currently held by %s", self.name, unit_with_lock) class StartLock(DataBagLock): @@ -164,10 +164,9 @@ class ScaleDownLock(Lockable): This will use valkey to store the lock state and will check if the unit with the lock has completed its scale down operation """ - lock_key = "scale_down_lock" - def __init__(self, charm: "ValkeyCharm") -> None: self.charm = charm + self.lock_key = f"scale_down_lock_{self.charm.app.name}" @property def client(self) -> ValkeyClient: @@ -244,7 +243,7 @@ def request_lock(self, timeout: int | None = None) -> bool: primary_ip = self.charm.sentinel_manager.get_primary_ip() @property - def do_i_hold_lock(self) -> bool: + def is_held_by_this_unit(self) -> bool: """Check if the local unit holds the lock.""" unit_with_lock = self.get_unit_with_lock() return ( diff --git a/src/core/models.py b/src/core/models.py index 0a185e3..864b0d7 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -121,10 +121,11 @@ def is_started(self) -> bool: @property def is_being_removed(self) -> bool: """Check if the unit is being removed from the cluster.""" - return self.model.scale_down_state not in { - ScaleDownState.NO_SCALE_DOWN.value, - ScaleDownState.WAIT_FOR_LOCK.value, - ScaleDownState.WAIT_TO_FAILOVER.value, + return self.model.scale_down_state in { + ScaleDownState.STOP_SERVICES.value, + ScaleDownState.RESET_SENTINEL.value, + ScaleDownState.HEALTH_CHECK.value, + ScaleDownState.GOING_AWAY.value, } @property diff --git a/src/events/base_events.py b/src/events/base_events.py index ef8b7cd..63cc9cf 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -121,7 +121,7 @@ def _on_start(self, event: ops.StartEvent) -> None: self.charm.state.unit_server.update({"start_state": StartState.WAITING_TO_START.value}) start_lock.request_lock() - if not start_lock.do_i_hold_lock: + if not start_lock.is_held_by_this_unit: logger.info("Waiting for lock to start") event.defer() return @@ -137,6 +137,7 @@ def _on_start(self, event: ops.StartEvent) -> None: self.charm.state.unit_server.update( {"start_state": StartState.WAITING_FOR_PRIMARY_START.value} ) + start_lock.release_lock() event.defer() return diff --git a/src/literals.py b/src/literals.py index dbe7383..75a947f 100644 --- a/src/literals.py +++ b/src/literals.py @@ -93,7 +93,7 @@ class ScaleDownState(StrEnum): NO_SCALE_DOWN = "" WAIT_FOR_LOCK = "wait_for_lock" WAIT_TO_FAILOVER = "wait_to_failover" - STOP_SERVICES = "stopped_services" + STOP_SERVICES = "stopping_services" RESET_SENTINEL = "reset_sentinel" HEALTH_CHECK = "health_check" GOING_AWAY = "going_away" diff --git a/src/workload_k8s.py b/src/workload_k8s.py index 91f0a3f..7e017d0 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -133,7 +133,12 @@ def exec(self, command: list[str]) -> tuple[str, str | None]: def stop(self) -> None: try: self.container.stop(self.valkey_service, self.sentinel_service, self.metric_service) - except ops.pebble.ChangeError as e: + except ( + ops.pebble.ChangeError, + ops.pebble.TimeoutError, + ops.pebble.ConnectionError, + ops.pebble.APIError, + ) as e: logger.error("Failed to stop Valkey services: %s", e) raise ValkeyServicesCouldNotBeStoppedError( f"Failed to stop Valkey services: {e}" diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py index fef0088..423654a 100644 --- a/tests/integration/conftest.py +++ b/tests/integration/conftest.py @@ -18,7 +18,7 @@ def c_writes(juju: jubilant.Juju): """Create instance of the ContinuousWrites.""" app = APP_NAME - logger.debug(f"Creating ContinuousWrites instance for app with name {app}") + logger.info(f"Creating ContinuousWrites instance for app with name {app}") return ContinuousWrites(juju, app) diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index 129daaa..dae9fef 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -269,7 +269,6 @@ async def with_client(conf: SimpleNamespace): current_val = starting_number config = initial_config - # client = await _make_client(config) proc_logger.info(f"Starting continuous async writes from {current_val}") diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index c992103..5e7b886 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -17,7 +17,7 @@ IMAGE_RESOURCE, are_apps_active_and_agents_idle, get_cluster_hostnames, - get_number_connected_slaves, + get_number_connected_replicas, get_password, get_primary_ip, remove_number_units, @@ -72,13 +72,13 @@ async def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: # check if all units have been added to the cluster hostnames = get_cluster_hostnames(juju, APP_NAME) - connected_slaves = await get_number_connected_slaves( + connected_replicas = await get_number_connected_replicas( hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) - assert connected_slaves == NUM_UNITS - 1, ( - f"Expected {NUM_UNITS - 1} connected slaves, got {connected_slaves}." + assert connected_replicas == NUM_UNITS - 1, ( + f"Expected {NUM_UNITS - 1} connected replicas, got {connected_replicas}." ) await assert_continuous_writes_increasing( @@ -97,13 +97,13 @@ async def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_writes) -> None: """Make sure scale down operations complete successfully.""" - number_of_slaves = await get_number_connected_slaves( + number_of_replicas = await get_number_connected_replicas( hostnames=get_cluster_hostnames(juju, APP_NAME), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) - assert number_of_slaves == NUM_UNITS - 1, ( - f"Expected {NUM_UNITS - 1} connected slaves, got {number_of_slaves}." + assert number_of_replicas == NUM_UNITS - 1, ( + f"Expected {NUM_UNITS - 1} connected replicas, got {number_of_replicas}." ) await c_writes.async_clear() @@ -120,13 +120,13 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ num_units = len(juju.status().get_units(APP_NAME)) assert num_units == NUM_UNITS - 1, f"Expected {NUM_UNITS - 1} units, got {num_units}." - number_of_slaves = await get_number_connected_slaves( + number_of_replicas = await get_number_connected_replicas( hostnames=get_cluster_hostnames(juju, APP_NAME), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) - assert number_of_slaves == NUM_UNITS - 2, ( - f"Expected {NUM_UNITS - 2} connected slaves, got {number_of_slaves}." + assert number_of_replicas == NUM_UNITS - 2, ( + f"Expected {NUM_UNITS - 2} connected replicas, got {number_of_replicas}." ) # update hostnames after scale down @@ -161,13 +161,13 @@ async def test_scale_down_multiple_units( timeout=1200, ) - number_of_slaves = await get_number_connected_slaves( + number_of_replicas = await get_number_connected_replicas( hostnames=get_cluster_hostnames(juju, APP_NAME), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) - assert number_of_slaves == NUM_UNITS, ( - f"Expected {NUM_UNITS} connected slaves, got {number_of_slaves}." + assert number_of_replicas == NUM_UNITS, ( + f"Expected {NUM_UNITS} connected replicas, got {number_of_replicas}." ) await c_writes.async_clear() @@ -185,13 +185,13 @@ async def test_scale_down_multiple_units( num_units = len(juju.status().get_units(APP_NAME)) assert num_units == NUM_UNITS - 1, f"Expected {NUM_UNITS - 1} units, got {num_units}." - number_of_slaves = await get_number_connected_slaves( + number_of_replicas = await get_number_connected_replicas( hostnames=get_cluster_hostnames(juju, APP_NAME), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) - assert number_of_slaves == NUM_UNITS - 2, ( - f"Expected {NUM_UNITS - 2} connected slaves, got {number_of_slaves}." + assert number_of_replicas == NUM_UNITS - 2, ( + f"Expected {NUM_UNITS - 2} connected replicas, got {number_of_replicas}." ) c_writes.update() @@ -234,13 +234,13 @@ async def test_scale_down_to_zero_and_back( hostnames = get_cluster_hostnames(juju, APP_NAME) - connected_slaves = await get_number_connected_slaves( + connected_replicas = await get_number_connected_replicas( hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) - assert connected_slaves == NUM_UNITS - 1, ( - f"Expected {NUM_UNITS - 1} connected slaves, got {connected_slaves}." + assert connected_replicas == NUM_UNITS - 1, ( + f"Expected {NUM_UNITS - 1} connected replicas, got {connected_replicas}." ) await c_writes.async_clear() c_writes.start() @@ -274,7 +274,7 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_w if unit_value.public_address == primary_ip ) assert primary_unit is not None, "Failed to identify primary unit for scale down test." - logger.debug( + logger.info( f"Identified primary unit {primary_unit} with IP {primary_ip} for scale down test." ) juju.remove_unit(primary_unit) @@ -286,7 +286,7 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_w c_writes.update() new_primary_ip = get_primary_ip(juju, APP_NAME) assert new_primary_ip != primary_ip, "Primary IP did not change after removing primary unit." - logger.debug(f"New primary IP after scale down is {new_primary_ip}.") + logger.info(f"New primary IP after scale down is {new_primary_ip}.") hostnames = get_cluster_hostnames(juju, APP_NAME) await assert_continuous_writes_increasing( hostnames=hostnames, diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 0378b33..0d4687b 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -370,7 +370,7 @@ async def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: total_bytes_target = target_gb * 1024 * 1024 * 1024 total_keys = total_bytes_target // value_size_bytes - logger.debug( + logger.info( f"Targeting ~{target_gb}GB ({total_keys:,} keys of {value_size_bytes} bytes each)" ) @@ -507,12 +507,12 @@ async def ping_cluster( return await client.ping() == "PONG".encode() -async def get_number_connected_slaves( +async def get_number_connected_replicas( hostnames: list[str], username: str, password: str, ) -> int: - """Get the number of connected slaves in the Valkey cluster. + """Get the number of connected replicas in the Valkey cluster. Args: hostnames: List of hostnames of the Valkey cluster nodes. @@ -520,7 +520,7 @@ async def get_number_connected_slaves( password: The password for authentication. Returns: - The number of connected slaves. + The number of connected replicas. """ async with create_valkey_client( hostnames=hostnames, username=username, password=password @@ -528,7 +528,7 @@ async def get_number_connected_slaves( info = (await client.info([InfoSection.REPLICATION])).decode() search_result = re.search(r"connected_slaves:([\d+])", info) if not search_result: - raise ValueError("Could not parse number of connected slaves from info output") + raise ValueError("Could not parse number of connected replicas from info output") return int(search_result.group(1)) From f500b434d16f68d85beb4c242292e150c49cccbe Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 4 Mar 2026 04:43:04 +0000 Subject: [PATCH 134/282] add a todo comment --- src/common/client.py | 1 + 1 file changed, 1 insertion(+) diff --git a/src/common/client.py b/src/common/client.py index 66760f1..4026d8b 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -92,6 +92,7 @@ def exec_cli_command( class ValkeyClient(CliClient): """Handle valkey client connections.""" + # TODO Handle TLS port when TLS is merged port: int = CLIENT_PORT def __init__( From 49f8826bd189c56e2db69798ed270140c1efbca3 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 4 Mar 2026 04:50:14 +0000 Subject: [PATCH 135/282] lint and add clearing c_writes --- tests/integration/ha/test_scaling.py | 7 ++++++- tests/integration/helpers.py | 4 +--- 2 files changed, 7 insertions(+), 4 deletions(-) diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index 5e7b886..4880709 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -54,9 +54,11 @@ async def test_seed_data(juju: jubilant.Juju) -> None: await seed_valkey(juju, target_gb=1) -async def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: +async def test_scale_up(juju: jubilant.Juju, c_writes) -> None: """Make sure new units are added to the valkey downtime.""" init_units_count = len(juju.status().apps[APP_NAME].units) + await c_writes.async_clear() + c_writes.start() # scale up juju.add_unit(APP_NAME, num_units=NUM_UNITS - init_units_count) @@ -93,6 +95,7 @@ async def test_scale_up(juju: jubilant.Juju, c_writes, c_writes_runner) -> None: username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) + await c_writes.async_clear() async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_writes) -> None: @@ -146,6 +149,7 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) + await c_writes.async_clear() async def test_scale_down_multiple_units( @@ -210,6 +214,7 @@ async def test_scale_down_multiple_units( username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) + await c_writes.async_clear() async def test_scale_down_to_zero_and_back( diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 0d4687b..09a95c7 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -370,9 +370,7 @@ async def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: total_bytes_target = target_gb * 1024 * 1024 * 1024 total_keys = total_bytes_target // value_size_bytes - logger.info( - f"Targeting ~{target_gb}GB ({total_keys:,} keys of {value_size_bytes} bytes each)" - ) + logger.info(f"Targeting ~{target_gb}GB ({total_keys:,} keys of {value_size_bytes} bytes each)") start_time = time.time() keys_added = 0 From fde927fcca572cb39230b6e6b75a258ea3f9ebc3 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 4 Mar 2026 06:04:39 +0000 Subject: [PATCH 136/282] increase cw request timeout to 1s --- src/common/client.py | 11 ++--------- src/managers/sentinel.py | 4 ++-- tests/integration/continuous_writes.py | 4 ++-- 3 files changed, 6 insertions(+), 13 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index 4026d8b..f3b4073 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -141,12 +141,6 @@ def info_persistence(self, hostname: str) -> dict[str, str] | None: if line.startswith("#"): continue values_parts = line.split(":", 1) - if len(values_parts) != 2: - logger.error( - "Unexpected output format when getting persistence info from Valkey server at %s", - hostname, - ) - return None values[values_parts[0]] = values_parts[1] return values @@ -292,7 +286,7 @@ def get_primary_addr_by_name(self, hostname: str) -> str: """ return self.exec_cli_command( command=["sentinel", "get-primary-addr-by-name", PRIMARY_NAME], hostname=hostname - )[0] + ) def primary(self, hostname: str) -> dict[str, str]: """Get the primary info from the sentinel. @@ -378,10 +372,9 @@ def replicas_primary(self, hostname: str) -> list[dict[str, str]]: Returns: (list[dict[str, str]]): The list of replicas with their information. """ - replicas = self.exec_cli_command( + return self.exec_cli_command( command=["sentinel", "replicas", PRIMARY_NAME], hostname=hostname ) - return replicas def sentinels_primary(self, hostname: str) -> list[dict[str, str]]: """Get the list of sentinels that see the same primary from the sentinel. diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index 315d4c4..f564986 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -100,7 +100,7 @@ def get_primary_ip(self) -> str: for unit_ip in started_servers: try: - return client.get_primary_addr_by_name(hostname=unit_ip) + return client.get_primary_addr_by_name(hostname=unit_ip)[0] except ValkeyWorkloadCommandError: logger.warning( "Could not query sentinel for primary information from server at %s.", @@ -301,7 +301,7 @@ def get_active_sentinel_ips(self, hostname: str) -> list[str]: password=self.admin_password, workload=self.workload, ) - return [client.get_primary_addr_by_name(hostname=hostname)] + [ + return [client.get_primary_addr_by_name(hostname=hostname)[0]] + [ sentinel["ip"] for sentinel in client.sentinels_primary(hostname=hostname) ] diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index dae9fef..c6d1096 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -89,7 +89,7 @@ async def _create_glide_client(self, config: Optional[SimpleNamespace] = None) - glide_config = GlideClientConfiguration( addresses=addresses, client_name="continuous_writes_client", - request_timeout=250, + request_timeout=1000, credentials=credentials, reconnect_strategy=BackoffStrategy(num_of_retries=1, factor=50, exponent_base=2), ) @@ -253,7 +253,7 @@ async def _make_client(conf: SimpleNamespace) -> GlideClient: glide_config = GlideClientConfiguration( addresses=addresses, client_name="continuous_writes_worker", - request_timeout=250, + request_timeout=1000, credentials=credentials, reconnect_strategy=BackoffStrategy(num_of_retries=1, factor=50, exponent_base=2), ) From f56dd748682c851a8f6993fe7dd19fe157288e19 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 4 Mar 2026 09:31:11 +0000 Subject: [PATCH 137/282] remove unneeded raises and augment unit test coverage for sentinel manager --- src/managers/cluster.py | 6 +++- src/managers/sentinel.py | 32 +++++++----------- tests/unit/test_charm.py | 42 +++++++++++++++++++++-- tests/unit/test_scaledown.py | 65 +++++++++++++++++++++++------------- 4 files changed, 98 insertions(+), 47 deletions(-) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 7bbf9be..0b71e93 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -80,7 +80,11 @@ def is_replica_synced(self) -> bool: workload=self.workload, ) role_info = client.role(hostname=self.state.bind_address) - return role_info[0] == "slave" and role_info[3] == "connected" + try: + return role_info[0] == "slave" and role_info[3] == "connected" + except IndexError as e: + logger.warning(f"Unexpected role information format: {role_info}. Error: {e}") + return False @retry( wait=wait_fixed(5), diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index f564986..e0fafa3 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -174,12 +174,8 @@ def reset_sentinel_states(self, sentinel_ips: list[str]) -> None: ) for sentinel_ip in sentinel_ips: - try: - logger.debug("Resetting sentinel state on %s.", sentinel_ip) - client.reset(hostname=sentinel_ip) - except ValkeyWorkloadCommandError: - logger.warning("Could not reset sentinel state on %s.", sentinel_ip) - raise + logger.debug("Resetting sentinel state on %s.", sentinel_ip) + client.reset(hostname=sentinel_ip) if not self.target_sees_all_others( target_sentinel_ip=sentinel_ip, sentinel_ips=sentinel_ips @@ -270,19 +266,15 @@ def verify_expected_replica_count(self, sentinel_ips: list[str]) -> None: ) for sentinel_ip in sentinel_ips: - try: - if expected_replicas != ( - number_replicas := len(client.replicas_primary(hostname=sentinel_ip)) - ): - logger.warning( - f"Sentinel at {sentinel_ip} sees {number_replicas} replicas, expected {expected_replicas}." - ) - raise SentinelIncorrectReplicaCountError( - f"Sentinel at {sentinel_ip} sees {number_replicas} replicas, expected {expected_replicas}." - ) - except ValkeyWorkloadCommandError: - logger.warning("Could not query sentinel for replica information.") - raise + if expected_replicas != ( + number_replicas := len(client.replicas_primary(hostname=sentinel_ip)) + ): + logger.warning( + f"Sentinel at {sentinel_ip} sees {number_replicas} replicas, expected {expected_replicas}." + ) + raise SentinelIncorrectReplicaCountError( + f"Sentinel at {sentinel_ip} sees {number_replicas} replicas, expected {expected_replicas}." + ) def get_active_sentinel_ips(self, hostname: str) -> list[str]: """Get a list of IP addresses of the active sentinels in the cluster. @@ -301,7 +293,7 @@ def get_active_sentinel_ips(self, hostname: str) -> list[str]: password=self.admin_password, workload=self.workload, ) - return [client.get_primary_addr_by_name(hostname=hostname)[0]] + [ + return [hostname] + [ sentinel["ip"] for sentinel in client.sentinels_primary(hostname=hostname) ] diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index a5acf2a..d1ddbfb 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -2,7 +2,7 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. -from unittest.mock import patch +from unittest.mock import PropertyMock, patch import pytest from ops import ActiveStatus, pebble, testing @@ -215,9 +215,45 @@ def test_start_non_primary(cloud_spec): state_out = ctx.run(ctx.on.start(), state_in) assert status_is(state_out, StartStatuses.SERVICE_STARTING.value) - # sentinel not yet discovered + # sentinel not yet discovered error raised with ( - patch("managers.sentinel.SentinelManager.is_sentinel_discovered", return_value=False), + patch( + "core.cluster_state.ClusterState.bind_address", + new_callable=PropertyMock(return_value="10.0.1.0"), + ), + patch( + "common.client.SentinelClient.sentinels_primary", + side_effect=ValkeyWorkloadCommandError("errored out"), + ), + patch("managers.cluster.ClusterManager.is_healthy", return_value=True), + patch("managers.sentinel.SentinelManager.is_healthy", return_value=True), + ): + relation = testing.PeerRelation( + id=1, + endpoint=PEER_RELATION, + local_app_data={"start-member": "valkey/0"}, + peers_data={1: {"start-state": "started"}}, + ) + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + leader=False, + relations={relation, status_peer_relation}, + secrets={internal_passwords_secret}, + containers={container}, + ) + state_out = ctx.run(ctx.on.start(), state_in) + assert status_is(state_out, StartStatuses.WAITING_FOR_SENTINEL_DISCOVERY.value) + + # sentinel not yet discovered sentinel not seeing other sentinel + with ( + patch( + "core.cluster_state.ClusterState.bind_address", + new_callable=PropertyMock(return_value="10.0.1.0"), + ), + patch( + "common.client.SentinelClient.sentinels_primary", + return_value=[{"ip": "10.0.1.1"}, {"ip": "10.0.1.2"}], + ), patch("managers.cluster.ClusterManager.is_healthy", return_value=True), patch("managers.sentinel.SentinelManager.is_healthy", return_value=True), ): diff --git a/tests/unit/test_scaledown.py b/tests/unit/test_scaledown.py index e6e3f16..dc6e4f7 100644 --- a/tests/unit/test_scaledown.py +++ b/tests/unit/test_scaledown.py @@ -8,6 +8,7 @@ from ops import testing from charm import ValkeyCharm +from common.exceptions import ValkeyWorkloadCommandError from literals import CONTAINER, PEER_RELATION from statuses import ScaleDownStatuses from tests.unit.helpers import status_is @@ -28,7 +29,7 @@ def get_3_unit_peer_relation(): "private-ip": f"10.0.1.{unit_id}", "start-state": "started", } - for unit_id in range(1, 4) + for unit_id in range(1, 3) }, ) @@ -71,25 +72,36 @@ def test_non_primary(cloud_spec): ) with ( + patch( + "core.cluster_state.ClusterState.bind_address", + new_callable=PropertyMock(return_value="10.0.1.0"), + ), patch("common.locks.ScaleDownLock.request_lock", return_value=True), patch("common.locks.ScaleDownLock.release_lock", return_value=True), - patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="10.0.1.1"), - patch("workload_k8s.ValkeyK8sWorkload.stop") as mock_stop, - patch( - "managers.sentinel.SentinelManager.reset_sentinel_states" - ) as mock_reset_sentinel_states, patch( - "managers.sentinel.SentinelManager.verify_expected_replica_count" - ) as mock_verify_expected_replica_count, + "common.client.SentinelClient.get_primary_addr_by_name", + side_effect=[ + ValkeyWorkloadCommandError("errored out"), + ("10.0.1.1", 6379), + ], + ), + patch("workload_k8s.ValkeyK8sWorkload.stop") as mock_stop, + patch("common.client.SentinelClient.reset") as mock_reset, patch( - "managers.sentinel.SentinelManager.get_active_sentinel_ips", - return_value=["10.0.1.1", "10.0.1.2", "10.0.1.3"], + "common.client.SentinelClient.sentinels_primary", + side_effect=[ + [{"ip": "10.0.1.0"}, {"ip": "10.0.1.2"}], # for get_active_sentinel_ips + [{"ip": "10.0.1.2"}], # for target_sees_all_others unit 10.0.1.1 + [{"ip": "10.0.1.1"}], # for target_sees_all_others unit 10.0.1.2 + ], ), + patch( + "common.client.SentinelClient.replicas_primary", return_value=[{"ip": "ip"}] + ), # we need the len to be 1 ): state_out = ctx.run(ctx.on.storage_detaching(data_strorage), state_in) mock_stop.assert_called_once() - mock_reset_sentinel_states.assert_called_once() - mock_verify_expected_replica_count.assert_called_once() + assert mock_reset.call_count == 2 status_is(state_out, ScaleDownStatuses.GOING_AWAY.value) @@ -116,21 +128,28 @@ def test_primary(cloud_spec): patch("common.locks.ScaleDownLock.release_lock", return_value=True), patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="10.0.1.0"), patch("workload_k8s.ValkeyK8sWorkload.stop") as mock_stop, - patch("managers.sentinel.SentinelManager.failover") as mock_failover, + patch("common.client.SentinelClient.failover_primary_coordinated") as mock_failover, + patch("common.client.SentinelClient.is_failover_in_progress") as mock_failover_in_progress, + patch("common.client.SentinelClient.reset") as mock_reset, patch( - "managers.sentinel.SentinelManager.reset_sentinel_states" - ) as mock_reset_sentinel_states, - patch( - "managers.sentinel.SentinelManager.verify_expected_replica_count" - ) as mock_verify_expected_replica_count, - patch( - "managers.sentinel.SentinelManager.get_active_sentinel_ips", - return_value=["10.0.1.1", "10.0.1.2", "10.0.1.3"], + "common.client.SentinelClient.sentinels_primary", + side_effect=[ + [{"ip": "10.0.1.1"}, {"ip": "10.0.1.2"}], # for get_active_sentinel_ips + [], # for target_sees_all_others unit 10.0.1.1 not yet + ValkeyWorkloadCommandError( + "errored out" + ), # for target_sees_all_others unit 10.0.1.1 network mishap + [{"ip": "10.0.1.2"}], # for target_sees_all_others unit 10.0.1.1 + [{"ip": "10.0.1.1"}], # for target_sees_all_others unit 10.0.1.2 + ], ), + patch( + "common.client.SentinelClient.replicas_primary", return_value=[{"ip": "ip"}] + ), # we need the len to be 1 ): state_out = ctx.run(ctx.on.storage_detaching(data_strorage), state_in) mock_failover.assert_called_once() + mock_failover_in_progress.assert_called_once() mock_stop.assert_called_once() - mock_reset_sentinel_states.assert_called_once() - mock_verify_expected_replica_count.assert_called_once() + assert mock_reset.call_count == 2 status_is(state_out, ScaleDownStatuses.GOING_AWAY.value) From 2dee78ce7e82d48b80243c0ac1355e05e6ba3cac Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 4 Mar 2026 12:04:28 +0000 Subject: [PATCH 138/282] reduce request timeout --- tests/integration/continuous_writes.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index c6d1096..b15c41c 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -89,7 +89,7 @@ async def _create_glide_client(self, config: Optional[SimpleNamespace] = None) - glide_config = GlideClientConfiguration( addresses=addresses, client_name="continuous_writes_client", - request_timeout=1000, + request_timeout=500, credentials=credentials, reconnect_strategy=BackoffStrategy(num_of_retries=1, factor=50, exponent_base=2), ) @@ -253,7 +253,7 @@ async def _make_client(conf: SimpleNamespace) -> GlideClient: glide_config = GlideClientConfiguration( addresses=addresses, client_name="continuous_writes_worker", - request_timeout=1000, + request_timeout=500, credentials=credentials, reconnect_strategy=BackoffStrategy(num_of_retries=1, factor=50, exponent_base=2), ) From 5fe97f01ab8968a6084c84dcfa3478ce26074c2f Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 4 Mar 2026 12:59:53 +0000 Subject: [PATCH 139/282] fix conflicts --- src/common/client.py | 46 ++++++++++++++++++++++++++--------------- src/managers/cluster.py | 2 +- src/workload_k8s.py | 7 +++++-- 3 files changed, 35 insertions(+), 20 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index 2867d9b..737e684 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -53,23 +53,19 @@ def exec_cli_command( ValkeyWorkloadCommandError: If the CLI command fails to execute. """ port = self.port - cli_command: list[str] = ( - [ - self.workload.cli, - "--no-auth-warning", - "-h", - hostname, - "-p", - str(port), - "--user", - self.username, - "--pass", - self.password, - ] - + ["--json"] - if json_output - else [] - ) + cli_command: list[str] = [ + self.workload.cli, + "--no-auth-warning", + "-h", + hostname, + "-p", + str(port), + "--user", + self.username, + "--pass", + self.password, + ] + (["--json"] if json_output else []) + if self.tls: cli_command.append("--tls") cli_command.append("--cert") @@ -256,6 +252,22 @@ def acl_load(self, hostname: str) -> bool: """ return self.exec_cli_command(["acl", "load"], hostname=hostname) == "OK" + def reload_tls(self, tls_config: dict[str, str], hostname: str) -> None: + """Trigger to load the TLS settings.""" + cmd = ["CONFIG", "SET"] + + for key, value in tls_config.items(): + cmd.append(key) + cmd.append(value) + logger.debug("Loading TLS settings: %s", cmd) + + try: + result = self.exec_cli_command(command=cmd, hostname=hostname) + logger.debug("Loading TLS settings: %s", result) + except ValkeyWorkloadCommandError: + logger.error("Error loading TLS settings") + raise ValkeyTLSLoadError("Could not load TLS settings") + class SentinelClient(CliClient): """Handle sentinel-specific client connections.""" diff --git a/src/managers/cluster.py b/src/managers/cluster.py index d4614f5..fa755f9 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -54,7 +54,7 @@ def _get_valkey_client(self) -> ValkeyClient: def reload_acl_file(self) -> None: """Reload the ACL file into the cluster.""" client = self._get_valkey_client() - if not client.load_acl(hostname=self.state.bind_address): + if not client.acl_load(hostname=self.state.bind_address): raise ValkeyACLLoadError("Could not load ACL file into Valkey cluster.") def update_primary_auth(self) -> None: diff --git a/src/workload_k8s.py b/src/workload_k8s.py index 6703253..40a0f3d 100644 --- a/src/workload_k8s.py +++ b/src/workload_k8s.py @@ -136,8 +136,11 @@ def exec(self, command: list[str]) -> tuple[str, str | None]: command=command, ) return process.wait_output() - except (ops.pebble.ExecError, ops.pebble.APIError) as e: - logger.error("Command failed with %s, %s", e.exit_code, e.stdout) + except ops.pebble.APIError as e: + logger.error("Command failed with %s, %s", e.code, e.body) + raise ValkeyWorkloadCommandError(e) + except ops.pebble.ExecError as e: + logger.error("Command failed with: %s, %s", e.exit_code, e.stdout) raise ValkeyWorkloadCommandError(e) @override From f15a45a9bf7a1acf4872ffc8396abb5bc9147fbd Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 10 Mar 2026 07:59:40 +0000 Subject: [PATCH 140/282] add is_tls_enabled property --- src/common/locks.py | 1 + src/core/models.py | 5 +++++ src/events/tls.py | 2 +- src/managers/cluster.py | 6 ++---- src/managers/sentinel.py | 6 ++---- 5 files changed, 11 insertions(+), 9 deletions(-) diff --git a/src/common/locks.py b/src/common/locks.py index dd03b48..700fb50 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -174,6 +174,7 @@ def client(self) -> ValkeyClient: return ValkeyClient( username=CharmUsers.VALKEY_ADMIN.value, password=self.charm.state.unit_server.valkey_admin_password, + tls=self.charm.state.unit_server.is_tls_enabled, workload=self.charm.workload, ) diff --git a/src/core/models.py b/src/core/models.py index 5b3d098..15e8cc6 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -166,6 +166,11 @@ def tls_client_state(self) -> TLSState: return TLSState(self.model.tls_client_state or TLSState.NO_TLS.value) + @property + def is_tls_enabled(self) -> bool: + """Check if TLS is enabled for client connections.""" + return self.tls_client_state in [TLSState.TLS, TLSState.TO_NO_TLS] + @final class ValkeyCluster(RelationState): diff --git a/src/events/tls.py b/src/events/tls.py index 485e586..8d8407d 100644 --- a/src/events/tls.py +++ b/src/events/tls.py @@ -153,7 +153,7 @@ def _on_tls_relation_broken(self, event: ops.RelationBrokenEvent) -> None: event.defer() return - if self.charm.state.unit_server.tls_client_state in [TLSState.TLS, TLSState.TO_NO_TLS]: + if self.charm.state.unit_server.is_tls_enabled: logger.info("Disabling client TLS") self.charm.tls_manager.set_tls_state(TLSState.TO_NO_TLS) try: diff --git a/src/managers/cluster.py b/src/managers/cluster.py index fa755f9..b0c0c93 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -18,7 +18,7 @@ ) from core.base_workload import WorkloadBase from core.cluster_state import ClusterState -from literals import CharmUsers, ScaleDownState, StartState, TLSState +from literals import CharmUsers, ScaleDownState, StartState from statuses import CharmStatuses, ScaleDownStatuses, StartStatuses logger = logging.getLogger(__name__) @@ -45,9 +45,7 @@ def _get_valkey_client(self) -> ValkeyClient: return ValkeyClient( username=self.admin_user, password=self.admin_password, - tls=True - if self.state.unit_server.tls_client_state in [TLSState.TLS, TLSState.TO_NO_TLS] - else False, + tls=self.state.unit_server.is_tls_enabled, workload=self.workload, ) diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index 527e0f0..5e6e8b6 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -21,7 +21,7 @@ ) from core.base_workload import WorkloadBase from core.cluster_state import ClusterState -from literals import CharmUsers, TLSState +from literals import CharmUsers from statuses import CharmStatuses logger = logging.getLogger(__name__) @@ -50,9 +50,7 @@ def _get_sentinel_client(self) -> SentinelClient: return SentinelClient( username=self.admin_user, password=self.admin_password, - tls=True - if self.state.unit_server.tls_client_state in [TLSState.TLS, TLSState.TO_NO_TLS] - else False, + tls=self.state.unit_server.is_tls_enabled, workload=self.workload, ) From f87db8269551f6bbf967bf7b9f85daa52d3c2efb Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 10 Mar 2026 12:11:01 +0000 Subject: [PATCH 141/282] add primary ip to valkey lock --- src/common/locks.py | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/src/common/locks.py b/src/common/locks.py index 700fb50..7b9ab17 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -185,20 +185,21 @@ def get_unit_with_lock(self, primary_ip: str | None = None) -> str | None: ) @override - def request_lock(self, timeout: int | None = None) -> bool: + def request_lock(self, timeout: int | None = None, primary_ip: str | None = None) -> bool: """Request the lock for the local unit. This method will keep trying to acquire the lock until it is acquired or until the timeout is reached (if provided). Args: timeout (int | None): The maximum time to keep trying to acquire the lock, in seconds. If None, it will keep trying indefinitely. + primary_ip (str | None): The primary IP to use for the lock. If None, it will get the current primary IP from the sentinel manager. Returns: bool: True if the lock was acquired, False if the timeout was reached before acquiring the lock. """ logger.debug(f"{self.charm.state.unit_server.unit_name} is requesting {self.name} lock.") retry_until = time.time() + timeout if timeout else None - primary_ip = self.charm.sentinel_manager.get_primary_ip() + primary_ip = primary_ip or self.charm.sentinel_manager.get_primary_ip() if self.get_unit_with_lock(primary_ip) == self.charm.state.unit_server.unit_name: logger.debug( f"{self.charm.state.unit_server.unit_name} already holds {self.name} lock. No need to request it again." @@ -251,11 +252,12 @@ def is_held_by_this_unit(self) -> bool: unit_with_lock is not None and unit_with_lock == self.charm.state.unit_server.unit_name ) - def release_lock(self) -> bool: + def release_lock(self, primary_ip: str | None = None) -> bool: """Release the lock from the local unit.""" + primary_ip = primary_ip or self.charm.sentinel_manager.get_primary_ip() if ( self.client.delifeq( - hostname=self.charm.sentinel_manager.get_primary_ip(), + hostname=primary_ip, key=self.lock_key, value=self.charm.state.unit_server.unit_name, ) From 10940e4e55605d7b7c73b028f18d8adf8166ceeb Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 10 Mar 2026 12:12:12 +0000 Subject: [PATCH 142/282] try to get primary ip for 40s and clean certicicates on leader going out --- src/events/base_events.py | 39 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 36 insertions(+), 3 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 1df88b3..9d5f4b6 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -9,6 +9,7 @@ from typing import TYPE_CHECKING import ops +import tenacity from common.exceptions import ( RequestingLockTimedOutError, @@ -443,8 +444,26 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: component_name=self.charm.cluster_manager.name, statuses_state=self.charm.state.statuses, ) + + # retry to get the primary ip until 2x restart delay is reached. + # Pebble uses backoff and is maxed at 30s + # Snap delay is set at 20s + # 40s should be enough to cover both substrates + try: + primary_ip = self._get_primary_ip_for_scale_down() + except ValkeyCannotGetPrimaryIPError as e: + logger.error(e) + self.charm.state.cluster.update( + { + "internal_ca_certificate": None, + "internal_ca_private_key": None, + } + ) + self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY}) + return + # blocks until the lock is acquired - if not scale_down_lock.request_lock(): + if not scale_down_lock.request_lock(primary_ip=primary_ip): raise RequestingLockTimedOutError("Failed to acquire scale down lock within timeout") self.charm.state.statuses.delete( @@ -494,7 +513,21 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: # check health after scale down self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.HEALTH_CHECK}) self.charm.sentinel_manager.verify_expected_replica_count(active_sentinels) - scale_down_lock.release_lock() + # release lock + scale_down_lock.release_lock(primary_ip=primary_ip) + + if self.charm.app.planned_units() == 0 and self.charm.unit.is_leader(): + # clear app data bag + self.charm.state.cluster.update( + { + "internal_ca_certificate": None, + "internal_ca_private_key": None, + } + ) - # release lock self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY}) + + @tenacity.retry(wait=tenacity.wait_fixed(5), stop=tenacity.stop_after_delay(40), reraise=True) + def _get_primary_ip_for_scale_down(self) -> str: + """Get the primary IP to use for scale down operations.""" + return self.charm.sentinel_manager.get_primary_ip() From d6a0bcec7c19b31540e75649ef7525777fb1e3f5 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 10 Mar 2026 12:47:14 +0000 Subject: [PATCH 143/282] fix and increase unit tests --- src/events/base_events.py | 17 ++++--- tests/unit/test_scaledown.py | 98 ++++++++++++++++++++++++++++++++++-- tests/unit/test_tls.py | 24 +++++++++ 3 files changed, 127 insertions(+), 12 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 9d5f4b6..ec993bf 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -453,12 +453,15 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: primary_ip = self._get_primary_ip_for_scale_down() except ValkeyCannotGetPrimaryIPError as e: logger.error(e) - self.charm.state.cluster.update( - { - "internal_ca_certificate": None, - "internal_ca_private_key": None, - } - ) + if self.charm.app.planned_units() == 0 and self.charm.unit.is_leader(): + # clear app data bag + self.charm.state.cluster.update( + { + "internal_ca_certificate": None, + "internal_ca_private_key": None, + } + ) + self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY}) return @@ -527,7 +530,7 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY}) - @tenacity.retry(wait=tenacity.wait_fixed(5), stop=tenacity.stop_after_delay(40), reraise=True) + @tenacity.retry(wait=tenacity.wait_fixed(5), stop=tenacity.stop_after_attempt(8), reraise=True) def _get_primary_ip_for_scale_down(self) -> str: """Get the primary IP to use for scale down operations.""" return self.charm.sentinel_manager.get_primary_ip() diff --git a/tests/unit/test_scaledown.py b/tests/unit/test_scaledown.py index dc6e4f7..3195ed4 100644 --- a/tests/unit/test_scaledown.py +++ b/tests/unit/test_scaledown.py @@ -8,7 +8,7 @@ from ops import testing from charm import ValkeyCharm -from common.exceptions import ValkeyWorkloadCommandError +from common.exceptions import ValkeyCannotGetPrimaryIPError, ValkeyWorkloadCommandError from literals import CONTAINER, PEER_RELATION from statuses import ScaleDownStatuses from tests.unit.helpers import status_is @@ -50,6 +50,13 @@ def test_other_unit_has_lock(cloud_spec): with ( patch("common.locks.ScaleDownLock.request_lock", return_value=False), + patch( + "common.client.SentinelClient.get_primary_addr_by_name", + side_effect=[ + ValkeyWorkloadCommandError("errored out"), + ("10.0.1.1", 6379), + ], + ), ): # expect raised exception due to lock not being acquired with pytest.raises(testing.errors.UncaughtCharmError) as exc_info: @@ -80,10 +87,7 @@ def test_non_primary(cloud_spec): patch("common.locks.ScaleDownLock.release_lock", return_value=True), patch( "common.client.SentinelClient.get_primary_addr_by_name", - side_effect=[ - ValkeyWorkloadCommandError("errored out"), - ("10.0.1.1", 6379), - ], + return_value=("10.0.1.1", 6379), ), patch("workload_k8s.ValkeyK8sWorkload.stop") as mock_stop, patch("common.client.SentinelClient.reset") as mock_reset, @@ -153,3 +157,87 @@ def test_primary(cloud_spec): mock_stop.assert_called_once() assert mock_reset.call_count == 2 status_is(state_out, ScaleDownStatuses.GOING_AWAY.value) + + +def test_last_leader_unit_going_down(cloud_spec): + ctx = testing.Context(ValkeyCharm, app_trusted=True) + relation = testing.PeerRelation( + id=1, + endpoint=PEER_RELATION, + local_unit_data={ + "hostname": "valkey-0", + "private-ip": "10.0.1.0", + "start-state": "started", + }, + ) + container = testing.Container(name=CONTAINER, can_connect=True) + data_strorage = testing.Storage(name="data") + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + relations={relation}, + leader=True, + containers={container}, + storages={data_strorage}, + ) + + with ( + patch( + "core.cluster_state.ClusterState.bind_address", + new_callable=PropertyMock(return_value="10.0.1.0"), + ), + patch("common.locks.ScaleDownLock.request_lock", return_value=True), + patch("common.locks.ScaleDownLock.release_lock", return_value=True), + patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="10.0.1.0"), + patch("workload_k8s.ValkeyK8sWorkload.stop") as mock_stop, + patch("common.client.SentinelClient.sentinels_primary", return_value=[]), + patch("core.models.ValkeyCluster.update") as cluster_update, + patch("ops.model.Application.planned_units", return_value=0), + ): + state_out = ctx.run(ctx.on.storage_detaching(data_strorage), state_in) + mock_stop.assert_called_once() + status_is(state_out, ScaleDownStatuses.GOING_AWAY.value) + cluster_update.assert_called_once_with( + {"internal_ca_certificate": None, "internal_ca_private_key": None} + ) + + +def test_cannot_get_primary_ip_leader(cloud_spec): + ctx = testing.Context(ValkeyCharm, app_trusted=True) + relation = testing.PeerRelation( + id=1, + endpoint=PEER_RELATION, + local_unit_data={ + "hostname": "valkey-0", + "private-ip": "10.0.1.0", + "start-state": "started", + }, + ) + container = testing.Container(name=CONTAINER, can_connect=True) + data_strorage = testing.Storage(name="data") + state_in = testing.State( + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + relations={relation}, + leader=True, + containers={container}, + storages={data_strorage}, + ) + + with ( + patch( + "core.cluster_state.ClusterState.bind_address", + new_callable=PropertyMock(return_value="10.0.1.0"), + ), + patch( + "managers.sentinel.SentinelManager.get_primary_ip", + side_effect=ValkeyCannotGetPrimaryIPError("errored out"), + ), + patch("workload_k8s.ValkeyK8sWorkload.stop") as mock_stop, + patch("core.models.ValkeyCluster.update") as cluster_update, + patch("ops.model.Application.planned_units", return_value=0), + ): + state_out = ctx.run(ctx.on.storage_detaching(data_strorage), state_in) + mock_stop.assert_not_called() + status_is(state_out, ScaleDownStatuses.GOING_AWAY.value) + cluster_update.assert_called_once_with( + {"internal_ca_certificate": None, "internal_ca_private_key": None} + ) diff --git a/tests/unit/test_tls.py b/tests/unit/test_tls.py index 0263207..0395de6 100644 --- a/tests/unit/test_tls.py +++ b/tests/unit/test_tls.py @@ -116,6 +116,10 @@ def test_client_tls_relation_broken(cloud_spec): patch("managers.tls.TLSManager.rehash_ca_certificates"), patch("managers.cluster.ClusterManager.reload_tls_settings") as reload_tls, patch("managers.sentinel.SentinelManager.restart_service"), + patch( + "common.client.SentinelClient.get_primary_addr_by_name", + return_value=("10.0.1.1", 6379), + ), ): state_out = ctx.run(ctx.on.relation_broken(relation=client_tls_relation), state_in) assert reload_tls.call_count == 2 @@ -158,6 +162,10 @@ def test_client_tls_relation_broken_disabling_tls_fails(cloud_spec): "managers.config.ConfigManager.set_config_properties", side_effect=ValueError("failed") ), patch("managers.cluster.ClusterManager.reload_tls_settings") as reload_tls, + patch( + "common.client.SentinelClient.get_primary_addr_by_name", + return_value=("10.0.1.1", 6379), + ), ): state_out = ctx.run(ctx.on.relation_broken(relation=client_tls_relation), state_in) reload_tls.assert_not_called() @@ -225,6 +233,10 @@ def test_client_tls_relation_broken_writing_internal_cert_fails(cloud_spec): patch("core.base_workload.WorkloadBase.write_file", side_effect=PermissionError("failed")), patch("managers.cluster.ClusterManager.reload_tls_settings") as reload_tls, patch("managers.sentinel.SentinelManager.restart_service"), + patch( + "common.client.SentinelClient.get_primary_addr_by_name", + return_value=("10.0.1.1", 6379), + ), ): state_out = ctx.run(ctx.on.relation_broken(relation=client_tls_relation), state_in) reload_tls.assert_called_once() @@ -259,6 +271,10 @@ def test_client_tls_relation_broken_run_deferred_event(cloud_spec): patch("managers.cluster.ClusterManager.reload_tls_settings"), patch("managers.sentinel.SentinelManager.restart_service"), patch("charmlibs.pathops.ContainerPath.mkdir"), + patch( + "common.client.SentinelClient.get_primary_addr_by_name", + return_value=("10.0.1.1", 6379), + ), ): state_out = ctx.run(ctx.on.relation_broken(relation=client_tls_relation), state_in) assert state_out.get_relation(1).local_unit_data.get("client-cert-ready") == "false" @@ -303,6 +319,10 @@ def test_client_certificate_available(cloud_spec): patch("managers.cluster.ClusterManager.reload_tls_settings") as reload_tls, patch("managers.sentinel.SentinelManager.restart_service"), patch("managers.tls.TLSManager.write_certificate"), + patch( + "common.client.SentinelClient.get_primary_addr_by_name", + return_value=("10.0.1.1", 6379), + ), ): event.certificate = certificate.certificate charm.tls_events._on_certificate_available(event) @@ -354,6 +374,10 @@ def test_client_certificate_available_enabling_fails(cloud_spec): ), patch("managers.cluster.ClusterManager.reload_tls_settings") as reload_tls, patch("managers.tls.TLSManager.write_certificate"), + patch( + "common.client.SentinelClient.get_primary_addr_by_name", + return_value=("10.0.1.1", 6379), + ), ): event.certificate = certificate.certificate charm.tls_events._on_certificate_available(event) From 75a90d3495827eb06e3c69df9d3a59e8c6dd3b30 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 10 Mar 2026 12:53:07 +0000 Subject: [PATCH 144/282] lint --- src/common/client.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/common/client.py b/src/common/client.py index 5686e3f..731c981 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -9,7 +9,7 @@ from tenacity import retry, retry_if_result, stop_after_attempt, wait_fixed -from common.exceptions import ValkeyWorkloadCommandError +from common.exceptions import ValkeyTLSLoadError, ValkeyWorkloadCommandError from core.base_workload import WorkloadBase from literals import CLIENT_PORT, PRIMARY_NAME, SENTINEL_PORT, SENTINEL_TLS_PORT, TLS_PORT From 867e699d849ccab29bcd7c0ee3bff9bb3d83f891 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 11 Mar 2026 09:39:57 +0000 Subject: [PATCH 145/282] feedback from rene --- src/events/base_events.py | 35 +++++++++++++---------------------- src/events/tls.py | 2 +- src/managers/sentinel.py | 12 ++++++++++++ 3 files changed, 26 insertions(+), 23 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index ec993bf..def6e55 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -9,7 +9,6 @@ from typing import TYPE_CHECKING import ops -import tenacity from common.exceptions import ( RequestingLockTimedOutError, @@ -445,24 +444,11 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: statuses_state=self.charm.state.statuses, ) - # retry to get the primary ip until 2x restart delay is reached. - # Pebble uses backoff and is maxed at 30s - # Snap delay is set at 20s - # 40s should be enough to cover both substrates try: - primary_ip = self._get_primary_ip_for_scale_down() + primary_ip = self.charm.sentinel_manager.get_primary_ip_for_scale_down() except ValkeyCannotGetPrimaryIPError as e: logger.error(e) - if self.charm.app.planned_units() == 0 and self.charm.unit.is_leader(): - # clear app data bag - self.charm.state.cluster.update( - { - "internal_ca_certificate": None, - "internal_ca_private_key": None, - } - ) - - self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY}) + self._set_state_for_going_away() return # blocks until the lock is acquired @@ -483,7 +469,13 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: statuses_state=self.charm.state.statuses, ) # if unit has primary then failover - primary_ip = self.charm.sentinel_manager.get_primary_ip() + try: + primary_ip = self.charm.sentinel_manager.get_primary_ip_for_scale_down() + except ValkeyCannotGetPrimaryIPError as e: + logger.error(e) + self._set_state_for_going_away() + return + active_sentinels = self.charm.sentinel_manager.get_active_sentinel_ips(primary_ip) if primary_ip == self.charm.state.bind_address and len(active_sentinels) > 1: self.charm.state.unit_server.update( @@ -519,6 +511,10 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: # release lock scale_down_lock.release_lock(primary_ip=primary_ip) + self._set_state_for_going_away() + + def _set_state_for_going_away(self) -> None: + """Set the state to going away when the unit is going down.""" if self.charm.app.planned_units() == 0 and self.charm.unit.is_leader(): # clear app data bag self.charm.state.cluster.update( @@ -529,8 +525,3 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: ) self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY}) - - @tenacity.retry(wait=tenacity.wait_fixed(5), stop=tenacity.stop_after_attempt(8), reraise=True) - def _get_primary_ip_for_scale_down(self) -> str: - """Get the primary IP to use for scale down operations.""" - return self.charm.sentinel_manager.get_primary_ip() diff --git a/src/events/tls.py b/src/events/tls.py index 8d8407d..789a309 100644 --- a/src/events/tls.py +++ b/src/events/tls.py @@ -142,7 +142,7 @@ def _on_certificate_available(self, event: CertificateAvailableEvent) -> None: def _on_tls_relation_broken(self, event: ops.RelationBrokenEvent) -> None: """Handle the `relation-broken` event.""" - if self.charm.app.planned_units() == 0: + if self.charm.app.planned_units() == 0 or self.charm.state.unit_server.is_being_removed: return if not self.charm.state.cluster.internal_ca_certificate: diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index 5e6e8b6..335b13b 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -6,6 +6,7 @@ import logging +import tenacity from data_platform_helpers.advanced_statuses.models import StatusObject from data_platform_helpers.advanced_statuses.protocol import ManagerStatusProtocol from data_platform_helpers.advanced_statuses.types import Scope @@ -285,3 +286,14 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje ).root return status_list or [CharmStatuses.ACTIVE_IDLE.value] + + @tenacity.retry(wait=tenacity.wait_fixed(5), stop=tenacity.stop_after_attempt(8), reraise=True) + def get_primary_ip_for_scale_down(self) -> str: + """Get the primary IP to use for scale down operations. + + Retry to get the primary ip until 2x restart delay is reached. + Pebble uses backoff and is maxed at 30s + Snap delay is set at 20s + 40s covers both substrates + """ + return self.get_primary_ip() From 0bf408ef5adb74550512a13382068e525d9ecb93 Mon Sep 17 00:00:00 2001 From: Smail KOURTA Date: Fri, 13 Mar 2026 15:16:37 +0400 Subject: [PATCH 146/282] [DPE-9373]: Use hostnames instead of IPs for k8s (#19) This pull request introduces a significant refactor to how the codebase handles primary endpoint addressing, shifting from using only IP addresses to supporting both IP addresses and hostnames, depending on the deployment substrate. It updates configuration management and event handling to use the new `primary_endpoint` concept, adds hostname resolution to Sentinel management, and ensures better compatibility with non-VM substrates. Additionally, it introduces a utility function for IP validation and improves Sentinel configuration for hostname-based communication. Key changes include: **Primary Endpoint Refactor and Configuration Management:** - Refactored all configuration and service management logic in `config.py` and related event handlers to use a new `primary_endpoint` parameter (which can be a hostname or IP) instead of just `primary_ip`. This includes updating method signatures, internal logic, and how endpoints are determined based on the substrate (VM vs. Kubernetes). [[1]](diffhunk://#diff-977a7d8c04cab4f9aaa5659892eadd9b991f51cd8f5814ecb51e3162bf23e31eL106-R106) [[2]](diffhunk://#diff-977a7d8c04cab4f9aaa5659892eadd9b991f51cd8f5814ecb51e3162bf23e31eL140-R147) [[3]](diffhunk://#diff-977a7d8c04cab4f9aaa5659892eadd9b991f51cd8f5814ecb51e3162bf23e31eL156-R160) [[4]](diffhunk://#diff-a24e7472936c291b5c95f9c56ccc25cccef3adf4c4cbd1de135e2dde31ae592cL50-R50) [[5]](diffhunk://#diff-a24e7472936c291b5c95f9c56ccc25cccef3adf4c4cbd1de135e2dde31ae592cL85-R88) [[6]](diffhunk://#diff-a24e7472936c291b5c95f9c56ccc25cccef3adf4c4cbd1de135e2dde31ae592cL97-R122) [[7]](diffhunk://#diff-a24e7472936c291b5c95f9c56ccc25cccef3adf4c4cbd1de135e2dde31ae592cL196-R205) [[8]](diffhunk://#diff-a24e7472936c291b5c95f9c56ccc25cccef3adf4c4cbd1de135e2dde31ae592cL244-R253) [[9]](diffhunk://#diff-a24e7472936c291b5c95f9c56ccc25cccef3adf4c4cbd1de135e2dde31ae592cL253-R268) [[10]](diffhunk://#diff-a24e7472936c291b5c95f9c56ccc25cccef3adf4c4cbd1de135e2dde31ae592cR284-R292) [[11]](diffhunk://#diff-a24e7472936c291b5c95f9c56ccc25cccef3adf4c4cbd1de135e2dde31ae592cL338-R361) [[12]](diffhunk://#diff-3dfb4a104b407f7d4b2e07795a63745a09cde228a8dbe86602e7b72ea600fbe4L161-R166) [[13]](diffhunk://#diff-3dfb4a104b407f7d4b2e07795a63745a09cde228a8dbe86602e7b72ea600fbe4L209-R212) - Updated event-driven updates to always use FQDN hostnames instead of short hostnames, improving consistency and DNS compatibility. [[1]](diffhunk://#diff-977a7d8c04cab4f9aaa5659892eadd9b991f51cd8f5814ecb51e3162bf23e31eL106-R106) [[2]](diffhunk://#diff-977a7d8c04cab4f9aaa5659892eadd9b991f51cd8f5814ecb51e3162bf23e31eL248-R256) [[3]](diffhunk://#diff-977a7d8c04cab4f9aaa5659892eadd9b991f51cd8f5814ecb51e3162bf23e31eL290-R298) **Sentinel Management Improvements:** - Enhanced Sentinel management to resolve hostnames to IPs when necessary, using the new `is_valid_ip` helper, and improved logic for retrieving active Sentinel IPs. [[1]](diffhunk://#diff-b226109a257f8cc9cb6b0a4a1eb4c1c730d2cc9620744b6855e4f3a96ca3041dR22) [[2]](diffhunk://#diff-b226109a257f8cc9cb6b0a4a1eb4c1c730d2cc9620744b6855e4f3a96ca3041dL272-R285) - Added `resolve-hostnames` and `announce-hostnames` options to the generated Sentinel configuration to enable hostname-based communication within the cluster. **Utility Enhancements:** - Introduced a new `is_valid_ip` helper function in `common/helpers.py` to reliably check if a string is a valid IP address, supporting the above refactors and Sentinel logic. These changes collectively improve the charm's flexibility and reliability in heterogeneous environments, especially for Kubernetes and other non-VM substrates. --- src/core/cluster_state.py | 28 ++++++++++++++++++++ src/core/models.py | 9 +++++++ src/events/base_events.py | 32 ++++++++++++++-------- src/events/tls.py | 10 ++++--- src/managers/cluster.py | 12 ++++----- src/managers/config.py | 51 +++++++++++++++++++++--------------- src/managers/sentinel.py | 23 +++++++++------- tests/unit/test_charm.py | 4 ++- tests/unit/test_scaledown.py | 12 ++++----- 9 files changed, 123 insertions(+), 58 deletions(-) diff --git a/src/core/cluster_state.py b/src/core/cluster_state.py index 773a760..f09336e 100644 --- a/src/core/cluster_state.py +++ b/src/core/cluster_state.py @@ -133,6 +133,20 @@ def ingress_address(self) -> str | None: return str(address) + @property + def hostname(self) -> str: + """The hostname of the unit.""" + return self.get_unit_hostname(self.model.unit.name) + + @property + def endpoint(self) -> str: + """The endpoint to be used by other units to connect to this unit. + + On VM-based substrates, this should be the bind address. + On Kubernetes, this should be the fully qualified domain name of the unit. + """ + return self.bind_address if self.substrate == Substrate.VM else self.hostname + def get_secret_from_id(self, secret_id: str) -> dict[str, str]: """Resolve the given id of a Juju secret and return the content as a dict. @@ -151,6 +165,20 @@ def get_secret_from_id(self, secret_id: str) -> dict[str, str]: return secret_content + def get_unit_hostname(self, unit_name: str | None = None) -> str: + """Get the hostname.localdomain for a unit. + + Translate juju unit name to hostname.localdomain, necessary + for correct name resolution under k8s. + + Args: + unit_name: unit name + Returns: + A string representing the hostname.localdomain of the unit. + """ + unit_name = unit_name or self.charm.unit.name + return f"{unit_name.replace('/', '-')}.{self.charm.app.name}-endpoints" + @property def number_units_started(self) -> int: """Return the number of units in the cluster that have their Valkey server started.""" diff --git a/src/core/models.py b/src/core/models.py index 15e8cc6..697e5a5 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -28,6 +28,7 @@ CharmUsers, ScaleDownState, StartState, + Substrate, TLSState, ) @@ -171,6 +172,14 @@ def is_tls_enabled(self) -> bool: """Check if TLS is enabled for client connections.""" return self.tls_client_state in [TLSState.TLS, TLSState.TO_NO_TLS] + def get_endpoint(self, substrate: Substrate) -> str: + """Return the endpoint to be used by other units to connect to this unit. + + On VM-based substrates, this should be the private IP address. + On Kubernetes, this should be the hostname of the unit. + """ + return self.model.private_ip if substrate == Substrate.VM else self.model.hostname + @final class ValkeyCluster(RelationState): diff --git a/src/events/base_events.py b/src/events/base_events.py index def6e55..b8f8c08 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -5,7 +5,6 @@ """Valkey base event handlers.""" import logging -import socket from typing import TYPE_CHECKING import ops @@ -102,7 +101,7 @@ def _on_start(self, event: ops.StartEvent) -> None: self.charm.state.unit_server.update( { "start_state": StartState.NOT_STARTED.value, - "hostname": socket.gethostname(), + "hostname": self.charm.state.hostname, "private_ip": self.charm.state.bind_address, } ) @@ -136,10 +135,12 @@ def _on_start(self, event: ops.StartEvent) -> None: event.defer() return try: - primary_ip = self.charm.sentinel_manager.get_primary_ip() + primary_endpoint = self.charm.sentinel_manager.get_primary_ip() except ValkeyCannotGetPrimaryIPError: if self.charm.state.number_units_started == 0 and self.charm.unit.is_leader(): - primary_ip = self.charm.state.bind_address + primary_endpoint = self.charm.state.unit_server.get_endpoint( + self.charm.state.substrate + ) else: logger.debug( "Primary IP not available yet or other units have already started, deferring start event until leader starts the primary" @@ -152,7 +153,7 @@ def _on_start(self, event: ops.StartEvent) -> None: return try: - self.charm.config_manager.configure_services(primary_ip) + self.charm.config_manager.configure_services(primary_endpoint) self.charm.workload.start() except ValkeyConfigurationError: self.charm.state.unit_server.update( @@ -174,8 +175,10 @@ def _on_start(self, event: ops.StartEvent) -> None: statuses_state=self.charm.state.statuses, component_name=self.charm.cluster_manager.name, ) - - self.unit_fully_started.emit(is_primary=primary_ip == self.charm.state.bind_address) + self.unit_fully_started.emit( + is_primary=primary_endpoint + == self.charm.state.unit_server.get_endpoint(self.charm.state.substrate) + ) # TODO check how to trigger if deferred without update status event def _on_unit_fully_started(self, event: UnitFullyStarted) -> None: @@ -244,7 +247,7 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: self.charm.state.unit_server.update( { - "hostname": socket.gethostname(), + "hostname": self.charm.state.hostname, "private_ip": self.charm.state.bind_address, } ) @@ -286,7 +289,7 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: """Handle the config_changed event.""" self.charm.state.unit_server.update( { - "hostname": socket.gethostname(), + "hostname": self.charm.state.hostname, "private_ip": self.charm.state.bind_address, } ) @@ -477,7 +480,10 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: return active_sentinels = self.charm.sentinel_manager.get_active_sentinel_ips(primary_ip) - if primary_ip == self.charm.state.bind_address and len(active_sentinels) > 1: + if ( + primary_ip == self.charm.state.unit_server.get_endpoint(self.charm.state.substrate) + and len(active_sentinels) > 1 + ): self.charm.state.unit_server.update( {"scale_down_state": ScaleDownState.WAIT_TO_FAILOVER} ) @@ -492,7 +498,11 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: # stop valkey and sentinel processes self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.STOP_SERVICES}) self.charm.workload.stop() - active_sentinels = [ip for ip in active_sentinels if ip != self.charm.state.bind_address] + active_sentinels = [ + ip + for ip in active_sentinels + if ip != self.charm.state.unit_server.get_endpoint(self.charm.state.substrate) + ] # reset sentinel states on other units self.charm.state.unit_server.update( diff --git a/src/events/tls.py b/src/events/tls.py index 789a309..8889856 100644 --- a/src/events/tls.py +++ b/src/events/tls.py @@ -158,10 +158,12 @@ def _on_tls_relation_broken(self, event: ops.RelationBrokenEvent) -> None: self.charm.tls_manager.set_tls_state(TLSState.TO_NO_TLS) try: primary_ip = self.charm.sentinel_manager.get_primary_ip() - self.charm.config_manager.set_config_properties(primary_ip=primary_ip) + self.charm.config_manager.set_config_properties(primary_endpoint=primary_ip) tls_config = self.charm.config_manager.generate_tls_config() self.charm.cluster_manager.reload_tls_settings(tls_config) - self.charm.config_manager.set_sentinel_config_properties(primary_ip=primary_ip) + self.charm.config_manager.set_sentinel_config_properties( + primary_endpoint=primary_ip + ) self.charm.sentinel_manager.restart_service() except ( ValkeyWorkloadCommandError, @@ -206,8 +208,8 @@ def _enable_client_tls(self) -> None: logger.info("Enabling client TLS in Valkey") primary_ip = self.charm.sentinel_manager.get_primary_ip() - self.charm.config_manager.set_config_properties(primary_ip=primary_ip) - self.charm.config_manager.set_sentinel_config_properties(primary_ip=primary_ip) + self.charm.config_manager.set_config_properties(primary_endpoint=primary_ip) + self.charm.config_manager.set_sentinel_config_properties(primary_endpoint=primary_ip) tls_config = self.charm.config_manager.generate_tls_config() self.charm.cluster_manager.reload_tls_settings(tls_config) self.charm.sentinel_manager.restart_service() diff --git a/src/managers/cluster.py b/src/managers/cluster.py index b0c0c93..bbfae71 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -52,14 +52,14 @@ def _get_valkey_client(self) -> ValkeyClient: def reload_acl_file(self) -> None: """Reload the ACL file into the cluster.""" client = self._get_valkey_client() - if not client.acl_load(hostname=self.state.bind_address): + if not client.acl_load(hostname=self.state.endpoint): raise ValkeyACLLoadError("Could not load ACL file into Valkey cluster.") def update_primary_auth(self) -> None: """Update the primaryauth runtime configuration on the Valkey server.""" client = self._get_valkey_client() if not client.config_set( - hostname=self.state.bind_address, + hostname=self.state.endpoint, parameter="primaryauth", value=self.state.cluster.internal_users_credentials.get( CharmUsers.VALKEY_REPLICA.value, "" @@ -76,7 +76,7 @@ def update_primary_auth(self) -> None: def is_replica_synced(self) -> bool: """Check if the replica is synced with the primary.""" client = self._get_valkey_client() - role_info = client.role(hostname=self.state.bind_address) + role_info = client.role(hostname=self.state.endpoint) try: return role_info[0] == "slave" and role_info[3] == "connected" except IndexError as e: @@ -93,12 +93,12 @@ def is_healthy(self, is_primary: bool = False, check_replica_sync: bool = True) """Check if a valkey instance is healthy.""" client = self._get_valkey_client() - if not client.ping(hostname=self.state.bind_address): + if not client.ping(hostname=self.state.endpoint): logger.warning("Health check failed: Valkey server did not respond to ping.") return False if ( - persistence_info := client.info_persistence(hostname=self.state.bind_address) + persistence_info := client.info_persistence(hostname=self.state.endpoint) ) and persistence_info.get("loading", "") != "0": logger.warning("Health check failed: Valkey server is still loading data.") return False @@ -112,7 +112,7 @@ def is_healthy(self, is_primary: bool = False, check_replica_sync: bool = True) def reload_tls_settings(self, tls_config: dict[str, str]) -> None: """Update TLS by loading the TLS settings.""" client = self._get_valkey_client() - client.reload_tls(tls_config, hostname=self.state.bind_address) + client.reload_tls(tls_config, hostname=self.state.endpoint) def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the cluster manager's statuses.""" diff --git a/src/managers/config.py b/src/managers/config.py index b962530..9290c1d 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -47,7 +47,7 @@ def __init__(self, state: ClusterState, workload: WorkloadBase): self.state = state self.workload = workload - def get_config_properties(self, primary_ip: str) -> dict[str, str]: + def get_config_properties(self, primary_endpoint: str) -> dict[str, str]: """Assemble the config properties. Returns: @@ -79,13 +79,10 @@ def get_config_properties(self, primary_ip: str) -> dict[str, str]: config_properties["dir"] = self.workload.working_dir.as_posix() # bind to all interfaces - if self.state.substrate == Substrate.VM: - config_properties["bind"] = self.state.bind_address - else: - config_properties["bind"] = "0.0.0.0 -::1" + config_properties["bind"] = self.state.endpoint # replica related config - replica_config = self._generate_replica_config(primary_ip=primary_ip) + replica_config = self._generate_replica_config(primary_endpoint=primary_endpoint) config_properties.update(replica_config) # TLS related configuration @@ -94,25 +91,29 @@ def get_config_properties(self, primary_ip: str) -> dict[str, str]: return config_properties - def _generate_replica_config(self, primary_ip: str) -> dict[str, str]: + def _generate_replica_config(self, primary_endpoint: str) -> dict[str, str]: """Generate the config properties related to replica configuration based on the current cluster state.""" + local_unit_endpoint = self.state.unit_server.get_endpoint(self.state.substrate) replica_config = { "primaryuser": CharmUsers.VALKEY_REPLICA.value, "primaryauth": self.state.cluster.internal_users_credentials.get( CharmUsers.VALKEY_REPLICA.value, "" ), + "replica-announce-ip": local_unit_endpoint, } - if primary_ip != self.state.bind_address: + if primary_endpoint != local_unit_endpoint: # set replicaof - logger.debug("Setting replicaof to primary %s", primary_ip) + logger.debug("Setting replicaof to primary %s", primary_endpoint) # internal communication always uses peer TLS (`tls-replication=yes`) - replica_config["replicaof"] = f"{primary_ip} {TLS_PORT}" + replica_config["replicaof"] = f"{primary_endpoint} {TLS_PORT}" return replica_config - def set_config_properties(self, primary_ip: str) -> None: + def set_config_properties(self, primary_endpoint: str) -> None: """Write the config properties to the config file.""" logger.debug("Writing configuration") - self.workload.write_config_file(config=self.get_config_properties(primary_ip=primary_ip)) + self.workload.write_config_file( + config=self.get_config_properties(primary_endpoint=primary_endpoint) + ) def generate_tls_config(self) -> dict[str, str]: """Return the TLS configuration based on the current state.""" @@ -193,7 +194,9 @@ def _get_user_acl_line(self, user: CharmUsers, passwords: dict[str, str] | None password_hash = hashlib.sha256(password.encode("utf-8")).hexdigest() return f"user {user.value} on #{password_hash} {CHARM_USERS_ROLE_MAP[user]}\n" - def get_sentinel_config_properties(self, primary_ip: str) -> dict[str, str | dict[str, str]]: + def get_sentinel_config_properties( + self, primary_endpoint: str + ) -> dict[str, str | dict[str, str]]: """Assemble the sentinel config properties. Returns: @@ -241,7 +244,7 @@ def get_sentinel_config_properties(self, primary_ip: str) -> dict[str, str | dic # sentinel configs config_properties["sentinel"] = sentinel_properties | self._generate_sentinel_configs( - primary_ip=primary_ip + primary_endpoint=primary_endpoint ) # tls config @@ -250,11 +253,13 @@ def get_sentinel_config_properties(self, primary_ip: str) -> dict[str, str | dic return config_properties - def _generate_sentinel_configs(self, primary_ip: str) -> dict[str, str]: + def _generate_sentinel_configs(self, primary_endpoint: str) -> dict[str, str]: """Generate the sentinel config properties based on the current cluster state.""" sentinel_configs = {} # TODO consider adding quorum calculation based on number of planned_units and the parity of the number of units - sentinel_configs["monitor"] = f"{PRIMARY_NAME} {primary_ip} {TLS_PORT} {QUORUM_NUMBER}" + sentinel_configs["monitor"] = ( + f"{PRIMARY_NAME} {primary_endpoint} {TLS_PORT} {QUORUM_NUMBER}" + ) # auth settings # auth-user is used by sentinel to authenticate to the valkey primary sentinel_configs["auth-user"] = f"{PRIMARY_NAME} {CharmUsers.VALKEY_SENTINEL.value}" @@ -270,13 +275,17 @@ def _generate_sentinel_configs(self, primary_ip: str) -> dict[str, str]: sentinel_configs["down-after-milliseconds"] = f"{PRIMARY_NAME} 30000" sentinel_configs["failover-timeout"] = f"{PRIMARY_NAME} 180000" sentinel_configs["parallel-syncs"] = f"{PRIMARY_NAME} 1" + if self.state.substrate == Substrate.K8S: + sentinel_configs["resolve-hostnames"] = "yes" + sentinel_configs["announce-hostnames"] = "yes" + sentinel_configs["announce-ip"] = self.state.unit_server.model.hostname return sentinel_configs - def set_sentinel_config_properties(self, primary_ip: str) -> None: + def set_sentinel_config_properties(self, primary_endpoint: str) -> None: """Write sentinel configuration file.""" logger.debug("Writing Sentinel configuration") - sentinel_config = self.get_sentinel_config_properties(primary_ip=primary_ip) + sentinel_config = self.get_sentinel_config_properties(primary_endpoint=primary_endpoint) sentinel_config_string = "\n".join( f"sentinel {key} {value}" for key, value in sentinel_config["sentinel"].items() @@ -335,7 +344,7 @@ def update_local_valkey_admin_password(self) -> None: } ) - def configure_services(self, primary_ip: str) -> None: + def configure_services(self, primary_endpoint: str) -> None: """Start Valkey and Sentinel services. Raises: @@ -343,9 +352,9 @@ def configure_services(self, primary_ip: str) -> None: """ try: self.update_local_valkey_admin_password() - self.set_config_properties(primary_ip=primary_ip) + self.set_config_properties(primary_endpoint=primary_endpoint) self.set_acl_file() - self.set_sentinel_config_properties(primary_ip=primary_ip) + self.set_sentinel_config_properties(primary_endpoint=primary_endpoint) self.set_sentinel_acl_file() except (ValkeyWorkloadCommandError, ValueError) as e: logger.error("Failed to set configuration properties: %s", e) diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index 335b13b..7a04900 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -65,9 +65,9 @@ def is_sentinel_discovered(self) -> bool: """Check if the sentinel of the local unit was discovered by the other sentinels in the cluster.""" # list of active sentinels: units with started flag true and not being removed active_sentinels = [ - unit.model.private_ip + unit.get_endpoint(self.state.substrate) for unit in self.state.servers - if unit.is_active and unit.model.private_ip != self.state.bind_address + if unit.is_active and unit.get_endpoint(self.state.substrate) != self.state.endpoint ] client = self._get_sentinel_client() @@ -77,9 +77,9 @@ def is_sentinel_discovered(self) -> bool: discovered_sentinels = { sentinel["ip"] for sentinel in client.sentinels_primary(hostname=sentinel_ip) } - if self.state.bind_address not in discovered_sentinels: + if self.state.endpoint not in discovered_sentinels: logger.warning( - f"Sentinel at {sentinel_ip} does not see local sentinel at {self.state.bind_address}." + f"Sentinel at {sentinel_ip} does not see local sentinel at {self.state.endpoint}." ) return False @@ -96,7 +96,11 @@ def get_primary_ip(self) -> str: Raises: ValkeyWorkloadCommandError: If the CLI command to get primary information fails on all sentinels. """ - started_servers = [unit.model.private_ip for unit in self.state.servers if unit.is_active] + started_servers = [ + unit.get_endpoint(self.state.substrate) + for unit in self.state.servers + if unit.is_active + ] client = self._get_sentinel_client() @@ -125,12 +129,12 @@ def is_healthy(self) -> bool: """Check if the sentinel service is healthy.""" client = self._get_sentinel_client() - if not client.ping(hostname=self.state.bind_address): + if not client.ping(hostname=self.state.endpoint): logger.warning("Health check failed: Sentinel did not respond to ping.") return False try: - client.primary(hostname=self.state.bind_address) + client.primary(hostname=self.state.endpoint) except ValkeyWorkloadCommandError: logger.warning("Health check failed: Could not query sentinel for master information.") return False @@ -147,8 +151,8 @@ def failover(self) -> None: """ client = self._get_sentinel_client() try: - client.failover_primary_coordinated(self.state.bind_address) - client.is_failover_in_progress(hostname=self.state.bind_address) + client.failover_primary_coordinated(self.state.endpoint) + client.is_failover_in_progress(self.state.endpoint) except ValkeyWorkloadCommandError as e: logger.error(f"Failed to trigger failover: {e}") raise SentinelFailoverError from e @@ -270,6 +274,7 @@ def get_active_sentinel_ips(self, hostname: str) -> list[str]: ValkeyWorkloadCommandError: If the CLI command to get sentinel information fails. """ client = self._get_sentinel_client() + return [hostname] + [ sentinel["ip"] for sentinel in client.sentinels_primary(hostname=hostname) ] diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index e945a69..90b1932 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -641,7 +641,9 @@ def test_change_password_secret_changed_non_leader_unit_not_successful(cloud_spe state_out = manager.run() mock_update_password.assert_not_called() mock_set_acl_file.assert_called_once() - mock_exec_command.assert_called_once_with(["acl", "load"], hostname="127.1.1.1") + mock_exec_command.assert_called_once_with( + ["acl", "load"], hostname="valkey-0.valkey-endpoints" + ) cluster_statuses = charm.state.statuses.get( scope="unit", component=charm.cluster_manager.name, diff --git a/tests/unit/test_scaledown.py b/tests/unit/test_scaledown.py index 3195ed4..d4cd7cc 100644 --- a/tests/unit/test_scaledown.py +++ b/tests/unit/test_scaledown.py @@ -87,16 +87,16 @@ def test_non_primary(cloud_spec): patch("common.locks.ScaleDownLock.release_lock", return_value=True), patch( "common.client.SentinelClient.get_primary_addr_by_name", - return_value=("10.0.1.1", 6379), + return_value=("valkey-1", 6379), ), patch("workload_k8s.ValkeyK8sWorkload.stop") as mock_stop, patch("common.client.SentinelClient.reset") as mock_reset, patch( "common.client.SentinelClient.sentinels_primary", side_effect=[ - [{"ip": "10.0.1.0"}, {"ip": "10.0.1.2"}], # for get_active_sentinel_ips - [{"ip": "10.0.1.2"}], # for target_sees_all_others unit 10.0.1.1 - [{"ip": "10.0.1.1"}], # for target_sees_all_others unit 10.0.1.2 + [{"ip": "valkey-0"}, {"ip": "valkey-2"}], # for get_active_sentinel_ips + [{"ip": "valkey-2"}], # for target_sees_all_others unit valkey-1 + [{"ip": "valkey-1"}], # for target_sees_all_others unit valkey-2 ], ), patch( @@ -130,7 +130,7 @@ def test_primary(cloud_spec): ), patch("common.locks.ScaleDownLock.request_lock", return_value=True), patch("common.locks.ScaleDownLock.release_lock", return_value=True), - patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="10.0.1.0"), + patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="valkey-0"), patch("workload_k8s.ValkeyK8sWorkload.stop") as mock_stop, patch("common.client.SentinelClient.failover_primary_coordinated") as mock_failover, patch("common.client.SentinelClient.is_failover_in_progress") as mock_failover_in_progress, @@ -187,7 +187,7 @@ def test_last_leader_unit_going_down(cloud_spec): ), patch("common.locks.ScaleDownLock.request_lock", return_value=True), patch("common.locks.ScaleDownLock.release_lock", return_value=True), - patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="10.0.1.0"), + patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="valkey-0"), patch("workload_k8s.ValkeyK8sWorkload.stop") as mock_stop, patch("common.client.SentinelClient.sentinels_primary", return_value=[]), patch("core.models.ValkeyCluster.update") as cluster_update, From c02cf2902380687aa99a5bb11d512ce2535e7b31 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 16 Mar 2026 06:11:04 +0000 Subject: [PATCH 147/282] add timestamp to lock --- src/common/locks.py | 33 +++++++++++++++++++++++---------- 1 file changed, 23 insertions(+), 10 deletions(-) diff --git a/src/common/locks.py b/src/common/locks.py index 7b9ab17..e9badcb 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -52,10 +52,16 @@ class DataBagLock(Lockable): unit_request_lock_atr_name: str member_with_lock_atr_name: str + lock_timestamp: str = "databaglock_timestamp" def __init__(self, state: "ClusterState") -> None: self.state = state + def __init_subclass__(cls) -> None: + """Initialize subclass attributes.""" + super().__init_subclass__() + cls.lock_timestamp = cls.__name__.lower() + "_timestamp" + @property def units_requesting_lock(self) -> list[str]: """Get the list of units requesting the start lock.""" @@ -68,6 +74,8 @@ def units_requesting_lock(self) -> list[str]: @property def next_unit_to_give_lock(self) -> str | None: """Get the next unit to give the start lock to.""" + if self.state.unit_server.model[self.unit_request_lock_atr_name]: + return self.state.unit_server.unit_name return self.units_requesting_lock[0] if self.units_requesting_lock else None @property @@ -98,11 +106,13 @@ def is_held_by_this_unit(self) -> bool: def request_lock(self) -> bool: """Request the lock for the local unit.""" - self.state.unit_server.update( - { - self.unit_request_lock_atr_name: True, - } - ) + if not self.state.unit_server.model[self.unit_request_lock_atr_name]: + self.state.unit_server.update( + { + self.unit_request_lock_atr_name: True, + self.lock_timestamp: time.time(), + } + ) if self.state.unit_server.unit.is_leader(): logger.info( f"Leader unit requesting {self.name} lock. Triggering lock request processing." @@ -113,11 +123,13 @@ def request_lock(self) -> bool: def release_lock(self) -> bool: """Release the lock from the local unit.""" - self.state.unit_server.update( - { - self.unit_request_lock_atr_name: False, - } - ) + if not self.state.unit_server.model[self.unit_request_lock_atr_name]: + self.state.unit_server.update( + { + self.unit_request_lock_atr_name: False, + self.lock_timestamp: time.time(), + } + ) if self.state.unit_server.unit.is_leader(): logger.info( f"Leader unit releasing {self.name} lock. Triggering lock request processing." @@ -155,6 +167,7 @@ def is_lock_free_to_give(self) -> bool: not self.state.cluster.model.start_member or not starting_unit or starting_unit.is_started + or not starting_unit.model.request_start_lock ) From 184119c2a4bac0524214671e7073414e66b742ab Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 16 Mar 2026 09:11:12 +0000 Subject: [PATCH 148/282] fix lock bug --- src/common/locks.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/common/locks.py b/src/common/locks.py index e9badcb..4dc399f 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -123,7 +123,7 @@ def request_lock(self) -> bool: def release_lock(self) -> bool: """Release the lock from the local unit.""" - if not self.state.unit_server.model[self.unit_request_lock_atr_name]: + if self.state.unit_server.model[self.unit_request_lock_atr_name]: self.state.unit_server.update( { self.unit_request_lock_atr_name: False, From 2be86dd20dfbbfdd1e1dd9ff9c71b2a4d60fd918 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 16 Mar 2026 09:16:11 +0000 Subject: [PATCH 149/282] network cut on k8s --- poetry.lock | 270 +++++++++++++++- pyproject.toml | 1 + tests/integration/ha/conftest.py | 24 ++ .../ha/helpers/chaos_network_loss.yml | 18 ++ .../ha/helpers/deploy_chaos_mesh.sh | 26 ++ .../ha/helpers/destroy_chaos_mesh.sh | 52 ++++ tests/integration/ha/helpers/helpers.py | 293 ++++++++++++++++++ tests/integration/ha/test_network_cut.py | 129 ++++++++ tests/integration/helpers.py | 36 ++- 9 files changed, 832 insertions(+), 17 deletions(-) create mode 100644 tests/integration/ha/conftest.py create mode 100644 tests/integration/ha/helpers/chaos_network_loss.yml create mode 100755 tests/integration/ha/helpers/deploy_chaos_mesh.sh create mode 100755 tests/integration/ha/helpers/destroy_chaos_mesh.sh create mode 100644 tests/integration/ha/helpers/helpers.py create mode 100644 tests/integration/ha/test_network_cut.py diff --git a/poetry.lock b/poetry.lock index a06763d..780ac07 100644 --- a/poetry.lock +++ b/poetry.lock @@ -1,4 +1,4 @@ -# This file is automatically @generated by Poetry 2.1.4 and should not be changed by hand. +# This file is automatically @generated by Poetry 2.2.1 and should not be changed by hand. 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# https://github.com/valkey-io/valkey-glide/pull/5124 not yet released valkey-glide = { git = "https://github.com/skourta/valkey-glide", subdirectory = "python/glide-async", branch = "add-build-rs-to-async-client" } +kubernetes = "^35.0.0" [tool.coverage.run] branch = true diff --git a/tests/integration/ha/conftest.py b/tests/integration/ha/conftest.py new file mode 100644 index 0000000..172ef56 --- /dev/null +++ b/tests/integration/ha/conftest.py @@ -0,0 +1,24 @@ +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. + + +from collections.abc import Generator +from typing import Any + +import jubilant +import pytest + +from literals import Substrate + +from .helpers.helpers import deploy_chaos_mesh, destroy_chaos_mesh + + +@pytest.fixture(scope="module") +def chaos_mesh(juju: jubilant.Juju, substrate: Substrate) -> Generator[None, Any, Any]: + assert juju.model, "Juju model is not set. Ensure that the test is running with a Juju model." + if substrate == Substrate.K8S: + deploy_chaos_mesh(juju.model) + yield + destroy_chaos_mesh(juju.model) + else: + yield diff --git a/tests/integration/ha/helpers/chaos_network_loss.yml b/tests/integration/ha/helpers/chaos_network_loss.yml new file mode 100644 index 0000000..bde55f7 --- /dev/null +++ b/tests/integration/ha/helpers/chaos_network_loss.yml @@ -0,0 +1,18 @@ +apiVersion: chaos-mesh.org/v1alpha1 +kind: NetworkChaos +# Directive for chaosmesh to simulate a network loss for a pod for the network cut HA test. +# Namespace and pod ID are templated and populated by the test. +metadata: + name: network-loss-primary + namespace: $namespace +spec: + action: loss + mode: one + selector: + pods: + $namespace: + - $pod + loss: + loss: "100" + correlation: "100" + duration: "60m" diff --git a/tests/integration/ha/helpers/deploy_chaos_mesh.sh b/tests/integration/ha/helpers/deploy_chaos_mesh.sh new file mode 100755 index 0000000..0a11fb8 --- /dev/null +++ b/tests/integration/ha/helpers/deploy_chaos_mesh.sh @@ -0,0 +1,26 @@ +#!/bin/bash + +# Utility script to install chaosmesh in the K8S cluster, so test can use it to simulate +# infrastructure failures + +chaos_mesh_ns=$1 +chaos_mesh_version="2.4.1" + +if [ -z "${chaos_mesh_ns}" ]; then + exit 1 +fi + +deploy_chaos_mesh() { + if [ "$(microk8s.helm repo list | grep -c 'chaos-mesh')" != "1" ]; then + echo "adding chaos-mesh microk8s.helm repo" + microk8s.helm repo add chaos-mesh https://charts.chaos-mesh.org + fi + + echo "installing chaos-mesh" + microk8s.helm install chaos-mesh chaos-mesh/chaos-mesh --namespace="${chaos_mesh_ns}" --set chaosDaemon.runtime=containerd --set chaosDaemon.socketPath=/var/snap/microk8s/common/run/containerd.sock --set dashboard.create=false --version "${chaos_mesh_version}" --set clusterScoped=false --set controllerManager.targetNamespace="${chaos_mesh_ns}" + sleep 10 +} + +echo "namespace=${chaos_mesh_ns}" +chmod 0700 ~/.kube/config +deploy_chaos_mesh diff --git a/tests/integration/ha/helpers/destroy_chaos_mesh.sh b/tests/integration/ha/helpers/destroy_chaos_mesh.sh new file mode 100755 index 0000000..eff5404 --- /dev/null +++ b/tests/integration/ha/helpers/destroy_chaos_mesh.sh @@ -0,0 +1,52 @@ +#!/bin/bash + +# Utility script to removing chaosmesh from the K8S cluster, to clean up test artefacts + +chaos_mesh_ns=$1 + +if [ -z "${chaos_mesh_ns}" ]; then + exit 1 +fi + +destroy_chaos_mesh() { + echo "deleting api-resources" + for i in $(kubectl api-resources | grep chaos-mesh | awk '{print $1}'); do timeout 30 kubectl delete "${i}" --all --all-namespaces || :; done + + if [ "$(kubectl -n "${chaos_mesh_ns}" get mutatingwebhookconfiguration | grep -c 'choas-mesh-mutation')" = "1" ]; then + echo "deleting chaos-mesh-mutation" + timeout 30 kubectl -n "${chaos_mesh_ns}" delete mutatingwebhookconfiguration chaos-mesh-mutation || : + fi + + if [ "$(kubectl -n "${chaos_mesh_ns}" get validatingwebhookconfiguration | grep -c 'chaos-mesh-validation-auth')" = "1" ]; then + echo "deleting chaos-mesh-validation-auth" + timeout 30 kubectl -n "${chaos_mesh_ns}" delete validatingwebhookconfiguration chaos-mesh-validation-auth || : + fi + + if [ "$(kubectl -n "${chaos_mesh_ns}" get validatingwebhookconfiguration | grep -c 'chaos-mesh-validation')" = "1" ]; then + echo 'deleting chaos-mesh-validation' + timeout 30 kubectl -n "${chaos_mesh_ns}" delete validatingwebhookconfiguration chaos-mesh-validation || : + fi + + if [ "$(kubectl get clusterrolebinding | grep 'chaos-mesh' | awk '{print $1}' | wc -l)" != "0" ]; then + echo "deleting clusterrolebindings" + timeout 30 kubectl delete clusterrolebinding "$(kubectl get clusterrolebinding | grep 'chaos-mesh' | awk '{print $1}')" || : + fi + + if [ "$(kubectl get clusterrole | grep 'chaos-mesh' | awk '{print $1}' | wc -l)" != "0" ]; then + echo "deleting clusterroles" + timeout 30 kubectl delete clusterrole "$(kubectl get clusterrole | grep 'chaos-mesh' | awk '{print $1}')" || : + fi + + if [ "$(kubectl get crd | grep 'chaos-mesh.org' | awk '{print $1}' | wc -l)" != "0" ]; then + echo "deleting crds" + timeout 30 kubectl delete crd "$(kubectl get crd | grep 'chaos-mesh.org' | awk '{print $1}')" || : + fi + + if [ -n "${chaos_mesh_ns}" ] && [ "$(microk8s.helm repo list --namespace "${chaos_mesh_ns}" | grep -c 'chaos-mesh')" = "1" ]; then + echo "uninstalling chaos-mesh microk8s.helm repo" + microk8s.helm uninstall chaos-mesh --namespace "${chaos_mesh_ns}" || : + fi +} + +echo "Destroying chaos mesh in ${chaos_mesh_ns}" +destroy_chaos_mesh diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py new file mode 100644 index 0000000..6a2bffc --- /dev/null +++ b/tests/integration/ha/helpers/helpers.py @@ -0,0 +1,293 @@ +#!/usr/bin/env python3 +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. + +"""High availability helpers.""" + +import os +import string +import subprocess +import tempfile +import time +from logging import getLogger + +import jubilant +import kubernetes as kubernetes +import urllib3 +from kubernetes import client, config +from kubernetes.client.rest import ApiException +from tenacity import RetryError, Retrying, stop_after_attempt, wait_fixed + +from literals import Substrate +from tests.integration.helpers import APP_NAME + +logger = getLogger(__name__) + + +def cut_network_from_unit(juju: jubilant.Juju, substrate: Substrate, machine_name: str) -> None: + """Cut network from a lxc container. + + Args: + juju: Juju client + substrate: The substrate the test is running on + machine_name: lxc container hostname or k8s pod name + """ + if substrate == Substrate.VM: + # apply a mask (device type `none`) + cut_network_command = f"lxc config device add {machine_name} eth0 none" + subprocess.check_call(cut_network_command.split()) + else: + # Apply a NetworkChaos file to use chaos-mesh to simulate a network cut. + with tempfile.NamedTemporaryFile(dir=".") as temp_file: + # Generates a manifest for chaosmesh to simulate network failure for a pod + with open( + "tests/integration/ha/helpers/chaos_network_loss.yml" + ) as chaos_network_loss_file: + logger.info( + f"Calling network loss on ns={juju.model} and pod={machine_name.replace('/', '-')}" + ) + template = string.Template(chaos_network_loss_file.read()) + chaos_network_loss = template.substitute( + namespace=juju.model, + pod=machine_name.replace("/", "-"), + ) + + temp_file.write(str.encode(chaos_network_loss)) + temp_file.flush() + + # Apply the generated manifest, chaosmesh would then make the pod inaccessible + env = os.environ + env["KUBECONFIG"] = os.path.expanduser("~/.kube/config") + try: + command_result = subprocess.check_output( + " ".join(["microk8s", "kubectl", "apply", "-f", temp_file.name]), + shell=True, + env=env, + stderr=subprocess.STDOUT, + ) + except subprocess.CalledProcessError as err: + logger.error( + f"Failed to apply network isolation: [{err.returncode}] {err.stderr=}, {err.stdout=}" + ) + raise + logger.info("Result of isolating unit from cluster is '%s'", command_result) + + +def restore_network_to_unit(juju: jubilant.Juju, substrate: Substrate, machine_name: str) -> None: + """Restore network from a lxc container. + + Args: + juju: Juju client + substrate: The substrate the test is running on + machine_name: lxc container hostname or k8s pod name + """ + if substrate == Substrate.VM: + # remove mask from eth0 + restore_network_command = f"lxc config device remove {machine_name} eth0" + subprocess.check_call(restore_network_command.split()) + else: + env = os.environ + env["KUBECONFIG"] = os.path.expanduser("~/.kube/config") + subprocess.check_output( + f"microk8s kubectl -n {juju.model} delete networkchaos network-loss-primary", + shell=True, + env=env, + ) + + +def deploy_chaos_mesh(namespace: str) -> None: + """Deploy chaos mesh to the provided namespace. + + Chaos mesh can them be used by the tests to simulate a variety of failures. + + Args: + namespace: The namespace to deploy chaos mesh to + """ + env = os.environ + env["KUBECONFIG"] = os.path.expanduser("~/.kube/config") + + subprocess.check_output( + " ".join( + [ + "tests/integration/ha/helpers/deploy_chaos_mesh.sh", + namespace, + ] + ), + shell=True, + env=env, + ) + + +def destroy_chaos_mesh(namespace: str) -> None: + """Destroy chaos mesh on a provided namespace. + + Cleans up the test K8S from test related dependencies. + + Args: + namespace: The namespace to deploy chaos mesh to + """ + env = os.environ + env["KUBECONFIG"] = os.path.expanduser("~/.kube/config") + + subprocess.check_output( + f"tests/integration/ha/helpers/destroy_chaos_mesh.sh {namespace}", + shell=True, + env=env, + ) + + +def get_unit_name_from_primary_ip( + juju: jubilant.Juju, primary_ip: str, substrate: Substrate +) -> str: + """Get the container name from the primary endpoint. + + Args: + juju: Juju client + primary_ip: The primary endpoint in the form of "ip:port" + substrate: The substrate the test is running on + + Returns: + The container name corresponding to the primary endpoint. + """ + ip_address_attribute = "public_address" if substrate == Substrate.VM else "address" + for unit_name, unit in juju.status().apps[APP_NAME].units.items(): + if getattr(unit, ip_address_attribute) == primary_ip: + return unit_name + raise ValueError(f"No unit found with IP address {primary_ip}") + + +def is_unit_reachable_k8s(namespace: str, source_pod_name: str, to_host: str) -> bool: + """Test network reachability to a unit in k8s by creating a temporary pod with the same labels as the source pod and trying to ping the destination IP.""" + # --------------------------------------------------------- + # 1. Setup Client and Bypass SSL (for local/testing clusters) + # --------------------------------------------------------- + config.load_kube_config() + + configuration = client.Configuration.get_default_copy() + configuration.verify_ssl = False + client.Configuration.set_default(configuration) + urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning) + + v1 = client.CoreV1Api() + + # --------------------------------------------------------- + # 2. Fetch Labels from the Source Pod + # --------------------------------------------------------- + try: + source_pod = v1.read_namespaced_pod(name=source_pod_name, namespace=namespace) + source_labels = source_pod.metadata.labels or {} + logger.info(f"Fetched labels from {source_pod_name}: {source_labels}") + except ApiException as e: + logger.error(f"Failed to read source pod {source_pod_name}: {e}") + return False + + # --------------------------------------------------------- + # 3. Define the Temporary Test Pod + # --------------------------------------------------------- + temp_pod_name = f"netshoot-test-{int(time.time())}" + + pod_manifest = client.V1Pod( + metadata=client.V1ObjectMeta( + name=temp_pod_name, + namespace=namespace, + labels=source_labels, # <--- Injecting the source pod's labels here + ), + spec=client.V1PodSpec( + restart_policy="Never", + containers=[ + client.V1Container( + name="netshoot", + image="nicolaka/netshoot", + # Ping once (-c 1), wait up to 2 seconds for a response (-W 2) + command=["ping", "-c", "1", "-W", "2", to_host], + ) + ], + ), + ) + + # --------------------------------------------------------- + # 4. Execute and Wait for Results + # --------------------------------------------------------- + try: + logger.info(f"Creating test pod '{temp_pod_name}' to ping {to_host}...") + v1.create_namespaced_pod(namespace=namespace, body=pod_manifest) + + # Poll the pod status until it completes + while True: + pod_status = v1.read_namespaced_pod(name=temp_pod_name, namespace=namespace) + phase = pod_status.status.phase + + if phase in ["Succeeded", "Failed"]: + break + time.sleep(1) # Wait a second before checking again + + # Optional: Fetch the actual ping output logs for debugging + logs = v1.read_namespaced_pod_log(name=temp_pod_name, namespace=namespace) + logger.info(f"Ping Output:\n{logs.strip()}") + + # If phase is Succeeded, the ping command returned exit code 0 + is_reachable = phase == "Succeeded" + + if is_reachable: + logger.info(f"Success: {to_host} is reachable from {source_pod_name}.") + else: + logger.error(f"Failure: {to_host} is NOT reachable from {source_pod_name}.") + + return is_reachable + + except ApiException as e: + logger.error(f"Exception during pod creation/execution: {e}") + return False + + # --------------------------------------------------------- + # 5. Clean Up (Always runs, even if errors occur above) + # --------------------------------------------------------- + finally: + logger.info(f"Cleaning up pod '{temp_pod_name}'...") + try: + v1.delete_namespaced_pod(name=temp_pod_name, namespace=namespace) + except ApiException as e: + logger.error(f"Failed to delete temporary pod {temp_pod_name}: {e}") + + +def is_unit_reachable_lxd(from_host: str, to_host: str) -> bool: + """Test network reachability between LXD hosts.""" + try: + for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10)): + with attempt: + ping = subprocess.call( + f"lxc exec {from_host} -- ping -c 5 {to_host}".split(), + stdout=subprocess.DEVNULL, + stderr=subprocess.DEVNULL, + ) + if ping == 0: + return True + else: + raise ValueError + except RetryError: + return False + return False + + +def is_unit_reachable(from_host: str, to_host: str, substrate: Substrate) -> bool: + """Test network reachability to a unit based on the substrate.""" + match substrate: + case Substrate.K8S: + return is_unit_reachable_k8s("testing", from_host, to_host) + case Substrate.VM: + return is_unit_reachable_lxd(from_host, to_host) + + +def hostname_from_unit(juju: jubilant.Juju, unit_name: str) -> str: + """Get the machine hostname from a specific unit. + + Args: + juju: An instance of Jubilant's Juju class on which to run Juju commands + unit_name: The name of the unit to get the machine + + Returns: + The hostname of the machine. + """ + task_result = juju.exec(command="hostname", unit=unit_name) + + return task_result.stdout.strip() diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py new file mode 100644 index 0000000..4401942 --- /dev/null +++ b/tests/integration/ha/test_network_cut.py @@ -0,0 +1,129 @@ +#!/usr/bin/env python3 +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. +import asyncio +import logging + +import jubilant + +from literals import Substrate +from tests.integration.ha.helpers.helpers import ( + cut_network_from_unit, + get_unit_name_from_primary_ip, + hostname_from_unit, + is_unit_reachable, + restore_network_to_unit, +) +from tests.integration.helpers import ( + APP_NAME, + IMAGE_RESOURCE, + CharmUsers, + are_apps_active_and_agents_idle, + get_cluster_hostnames, + get_number_connected_replicas, + get_password, + get_primary_ip, +) + +logger = logging.getLogger(__name__) + +NUM_UNITS = 3 + + +def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) -> None: + """Build the charm-under-test and deploy it with three units.""" + juju.deploy( + charm, + resources=IMAGE_RESOURCE if substrate == Substrate.K8S else None, + num_units=NUM_UNITS, + trust=True, + ) + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), + timeout=600, + ) + + assert len(juju.status().apps[APP_NAME].units) == NUM_UNITS, ( + f"Unexpected number of units after initial deploy: expected {NUM_UNITS}, got {len(juju.status().apps[APP_NAME].units)}" + ) + + +async def test_network_cut_primary(juju: jubilant.Juju, substrate: Substrate, chaos_mesh) -> None: + """Cut the network to the primary unit and verify that a new primary is elected.""" + # Get the current primary unit + primary_ip = get_primary_ip(juju, APP_NAME) + assert primary_ip, "Failed to get primary endpoint from Juju status." + + # Cut the network to the primary unit + logger.info("Cutting network to primary unit at %s", primary_ip) + primary_unit_name = get_unit_name_from_primary_ip(juju, primary_ip, substrate) + primary_hostname = hostname_from_unit(juju, primary_unit_name) + machine_name = primary_hostname + if substrate == Substrate.K8S: + primary_hostname = f"{primary_hostname}.{APP_NAME}-endpoints" + logger.info("Identified container name for primary unit: %s", primary_hostname) + cut_network_from_unit(juju, substrate, machine_name) + + for unit in juju.status().apps[APP_NAME].units: + if unit == primary_unit_name: + continue + assert not is_unit_reachable( + hostname_from_unit(juju, unit), primary_hostname, substrate + ), f"Unit {unit} can still reach the primary unit {primary_hostname} after network cut." + + logger.info( + "Network successfully cut to primary unit %s at %s. Verifying new primary election...", + primary_unit_name, + primary_ip, + ) + while True: + try: + new_primary_ip = get_primary_ip(juju, APP_NAME) + break + except ValueError as e: + logger.warning(f"Error getting primary IP after network cut: {e}") + logger.info("Waiting for new primary to be elected...") + await asyncio.sleep(10) + + assert new_primary_ip != primary_ip, ( + "Primary IP did not change after cutting network to the primary unit." + ) + logger.info( + "New primary IP after network cut: %s vs old primary IP: %s", new_primary_ip, primary_ip + ) + + # check replica number that it is down to NUM_UNITS - 2 + number_of_replicas = await get_number_connected_replicas( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + assert number_of_replicas == NUM_UNITS - 2, ( + f"Expected {NUM_UNITS - 2} connected replicas, got {number_of_replicas}." + ) + + # restore network to the original primary unit + logger.info("Restoring network to original primary unit at %s", primary_hostname) + restore_network_to_unit(juju, substrate, machine_name) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, unit_count=NUM_UNITS, idle_period=30 + ) + ) + + for unit in juju.status().apps[APP_NAME].units: + if unit == primary_unit_name: + continue + assert is_unit_reachable(hostname_from_unit(juju, unit), primary_hostname, substrate), ( + f"Unit {unit} cannot reach the original primary unit {primary_hostname} after network restoration." + ) + + # check replica number that it is back to NUM_UNITS - 1 + number_of_replicas = await get_number_connected_replicas( + hostnames=get_cluster_hostnames(juju, APP_NAME), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + ) + assert number_of_replicas == NUM_UNITS - 1, ( + f"Expected {NUM_UNITS - 1} connected replicas after network restoration, got {number_of_replicas}." + ) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 4de3c02..611c26f 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -376,20 +376,21 @@ def get_primary_ip(juju: jubilant.Juju, app: str) -> str: The IP address of the primary node. """ hostnames = get_cluster_hostnames(juju, app) - replication_info = exec_valkey_cli( - hostnames[0], - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju), - command="info replication", - ).stdout - # if master then we return the hostname - if "role:master" in replication_info: - return hostnames[0] - # extract ip - match = re.search(r"master_host:([^\s]+)", replication_info) - if not match: - raise ValueError("Could not find master_host in replication info") - return match.group(1) + for hostname in hostnames: + try: + replication_info = exec_valkey_cli( + hostname, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju), + command="info replication", + ).stdout + # if master then we return the hostname + if "role:master" in replication_info: + return hostname + except (subprocess.CalledProcessError, subprocess.TimeoutExpired) as e: + logger.warning(f"Error executing Valkey CLI on {hostname}: {e}") + + raise ValueError("No primary node found in the cluster") def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN) -> str: @@ -463,7 +464,12 @@ def exec_valkey_cli( """Execute a Valkey CLI command and returns the output as a string.""" command = f"valkey-cli --no-auth-warning -h {hostname} -p {CLIENT_PORT} --user {username} --pass {password} {command}" result = subprocess.run( - command.split(), check=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True + command.split(), + check=True, + stdout=subprocess.PIPE, + stderr=subprocess.PIPE, + text=True, + timeout=10, ) return valkey_cli_result( stdout=result.stdout.strip(), stderr=result.stderr.strip(), returncode=result.returncode From 3412ba911afa4d6ab5b6e202a452cdc58cc4e12a Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 16 Mar 2026 14:23:00 +0000 Subject: [PATCH 150/282] add handling ip change certs and tls in network cuts PR --- src/common/exceptions.py | 4 ++ src/events/base_events.py | 39 ++++++++++++++ src/managers/cluster.py | 9 ++++ src/managers/config.py | 1 - src/managers/tls.py | 47 ++++++++++++++++ tests/integration/continuous_writes.py | 67 ++++++++++++++++++++--- tests/integration/cw_helpers.py | 2 + tests/integration/ha/helpers/helpers.py | 13 +++-- tests/integration/ha/test_network_cut.py | 69 +++++++++++++++++++++--- tests/integration/helpers.py | 29 +++++++--- 10 files changed, 252 insertions(+), 28 deletions(-) diff --git a/src/common/exceptions.py b/src/common/exceptions.py index 26ced3d..92b8413 100644 --- a/src/common/exceptions.py +++ b/src/common/exceptions.py @@ -66,3 +66,7 @@ class RequestingLockTimedOutError(Exception): class ValkeyCertificatesNotReadyError(Exception): """Custom Exception if not all units have stored the TLS certificates.""" + + +class TLSCertificatesRequireRefreshError(Exception): + """Custom Exception if the TLS certificates require refresh due to changes in SANs.""" diff --git a/src/events/base_events.py b/src/events/base_events.py index b8f8c08..9e8fee6 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -11,6 +11,7 @@ from common.exceptions import ( RequestingLockTimedOutError, + TLSCertificatesRequireRefreshError, ValkeyACLLoadError, ValkeyCannotGetPrimaryIPError, ValkeyConfigSetError, @@ -287,6 +288,17 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: """Handle the config_changed event.""" + if ( + self.charm.state.unit_server.model.private_ip + and self.charm.state.bind_address != self.charm.state.unit_server.model.private_ip + ): + try: + self._on_ip_change() + except (ValkeyCannotGetPrimaryIPError, TLSCertificatesRequireRefreshError) as e: + logger.error(e) + event.defer() + return + self.charm.state.unit_server.update( { "hostname": self.charm.state.hostname, @@ -535,3 +547,30 @@ def _set_state_for_going_away(self) -> None: ) self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY}) + + def _on_ip_change(self) -> None: + """Handle changes to the unit's IP address.""" + # ip changed regenerate certs + if self.charm.tls_manager.certificate_sans_require_update(): + if not self.charm.state.client_tls_relation: + self.charm.tls_manager.create_and_store_self_signed_certificate() + else: + self.charm.tls_events.refresh_tls_certificates_event.emit() + raise TLSCertificatesRequireRefreshError( + "Certificate SANs require update, emitted event to refresh certificates" + ) + + # reconfigure services with new IP + self.charm.config_manager.configure_services(self.charm.sentinel_manager.get_primary_ip()) + + # try to hot reload the new configuration, if it fails, restart the workload to apply the new IP address + try: + self.charm.cluster_manager.update_endpoint() + tls_config = self.charm.config_manager.generate_tls_config() + self.charm.cluster_manager.reload_tls_settings(tls_config) + except ValkeyWorkloadCommandError as e: + logger.warning("Failed to update endpoint configuration on workload: %s", e) + logger.warning("Restarting valkey") + self.charm.workload.restart(self.charm.workload.valkey_service) + + self.charm.sentinel_manager.restart_service() diff --git a/src/managers/cluster.py b/src/managers/cluster.py index bbfae71..4e1765f 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -67,6 +67,15 @@ def update_primary_auth(self) -> None: ): raise ValkeyConfigSetError("Could not set primaryauth on Valkey server.") + def update_endpoint(self) -> None: + """Update the bind address runtime configuration on the Valkey server.""" + client = self._get_valkey_client() + for parameter in ["bind", "replica-announce-ip"]: + if not client.config_set( + hostname=self.state.endpoint, parameter=parameter, value=self.state.endpoint + ): + raise ValkeyConfigSetError(f"Could not set {parameter} on Valkey server.") + @retry( wait=wait_fixed(5), stop=stop_after_attempt(5), diff --git a/src/managers/config.py b/src/managers/config.py index 9290c1d..fb4b251 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -78,7 +78,6 @@ def get_config_properties(self, primary_endpoint: str) -> dict[str, str]: config_properties["aclfile"] = self.workload.acl_file.as_posix() config_properties["dir"] = self.workload.working_dir.as_posix() - # bind to all interfaces config_properties["bind"] = self.state.endpoint # replica related config diff --git a/src/managers/tls.py b/src/managers/tls.py index 1e61a59..4a6cf5e 100644 --- a/src/managers/tls.py +++ b/src/managers/tls.py @@ -169,6 +169,53 @@ def create_and_store_self_signed_certificate(self) -> None: self.workload.write_file(ca_cert.raw, self.workload.tls_paths.client_ca) self.rehash_ca_certificates() + def get_current_sans(self) -> dict[str, set[str]]: + """Get the current SANs for a unit's cert.""" + cert_file = self.workload.tls_paths.client_cert + + sans_ip = set() + sans_dns = set() + if not ( + san_lines := self.workload.exec( + [ + "openssl", + "x509", + "-ext", + "subjectAltName", + "-noout", + "-in", + cert_file.as_posix(), + ] + )[0].splitlines() + ): + return {"sans_ip": sans_ip, "sans_dns": sans_dns} + + for line in san_lines: + for sans in line.split(", "): + san_type, san_value = sans.split(":") + + if san_type.strip() == "DNS": + sans_dns.add(san_value) + if san_type.strip() == "IP Address": + sans_ip.add(san_value) + + return {"sans_ip": sans_ip, "sans_dns": sans_dns} + + def certificate_sans_require_update(self) -> bool: + """Check current certificate sans and determine if certificate requires update. + + Returns: + bool: True if certificate sans have changed, False if they are still the same. + """ + current_sans = self.get_current_sans() + new_sans_ip = self.build_sans_ip() + new_sans_dns = self.build_sans_dns() + + if new_sans_ip ^ current_sans["sans_ip"] or new_sans_dns ^ current_sans["sans_dns"]: + return True + + return False + def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the TLS statuses.""" status_list: list[StatusObject] = [] diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index b15c41c..dce4b63 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -15,11 +15,13 @@ import jubilant from glide import ( + AdvancedGlideClientConfiguration, BackoffStrategy, GlideClient, GlideClientConfiguration, NodeAddress, ServerCredentials, + TlsAdvancedConfiguration, ) from tenacity import ( retry, @@ -28,7 +30,7 @@ wait_random, ) -from literals import CharmUsers +from literals import CLIENT_PORT, TLS_PORT, CharmUsers from tests.integration.helpers import get_data_bag, get_password logger = logging.getLogger(__name__) @@ -58,7 +60,12 @@ class ContinuousWrites: VALKEY_PORT = 6379 def __init__( - self, juju: jubilant.Juju, app: str, initial_count: int = 0, in_between_sleep: float = 1.0 + self, + juju: jubilant.Juju, + app: str, + initial_count: int = 0, + in_between_sleep: float = 1.0, + tls_enabled: bool = False, ): self._juju = juju self._app = app @@ -69,29 +76,55 @@ def __init__( self._initial_count = initial_count self._in_between_sleep = in_between_sleep self._mp_ctx = multiprocessing.get_context("spawn") + self.tls_enabled = tls_enabled def _get_config(self) -> SimpleNamespace: """Fetch current cluster configuration from Juju.""" return SimpleNamespace( endpoints=get_active_hostnames(self._juju, self._app), valkey_password=get_password(self._juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=self.tls_enabled, ) async def _create_glide_client(self, config: Optional[SimpleNamespace] = None) -> GlideClient: """Asynchronously create and return a configured GlideClient.""" conf = config or self._get_config() - addresses = [NodeAddress(host, self.VALKEY_PORT) for host in conf.endpoints.split(",")] + addresses = [ + NodeAddress(host, TLS_PORT if conf.tls_enabled else CLIENT_PORT) + for host in conf.endpoints.split(",") + ] credentials = ServerCredentials( username=CharmUsers.VALKEY_ADMIN.value, password=conf.valkey_password ) + tls_cert = tls_key = tls_ca_cert = None + if conf.tls_enabled: + # Read locally stored certificate files + with open("client.pem", "rb") as f: + tls_cert = f.read() + with open("client.key", "rb") as f: + tls_key = f.read() + with open("client_ca.pem", "rb") as f: + tls_ca_cert = f.read() + logger.info( + "TLS is enabled. Loaded client certificate, key, and CA cert for Glide client configuration." + ) + + tls_config = TlsAdvancedConfiguration( + client_cert_pem=tls_cert if conf.tls_enabled else None, + client_key_pem=tls_key if conf.tls_enabled else None, + root_pem_cacerts=tls_ca_cert if conf.tls_enabled else None, + ) + glide_config = GlideClientConfiguration( addresses=addresses, client_name="continuous_writes_client", request_timeout=500, credentials=credentials, reconnect_strategy=BackoffStrategy(num_of_retries=1, factor=50, exponent_base=2), + use_tls=True if conf.tls_enabled else False, + advanced_config=AdvancedGlideClientConfiguration(tls_config=tls_config), ) return await GlideClient.create(glide_config) @@ -243,20 +276,40 @@ async def _async_run( async def _make_client(conf: SimpleNamespace) -> GlideClient: addresses = [ - NodeAddress(host, ContinuousWrites.VALKEY_PORT) + NodeAddress(host, TLS_PORT if conf.tls_enabled else CLIENT_PORT) for host in conf.endpoints.split(",") ] + credentials = ServerCredentials( - username=CharmUsers.VALKEY_ADMIN.value, - password=conf.valkey_password, + username=CharmUsers.VALKEY_ADMIN.value, password=conf.valkey_password + ) + + tls_cert = tls_key = tls_ca_cert = None + if conf.tls_enabled: + # Read locally stored certificate files + with open("client.pem", "rb") as f: + tls_cert = f.read() + with open("client.key", "rb") as f: + tls_key = f.read() + with open("client_ca.pem", "rb") as f: + tls_ca_cert = f.read() + + tls_config = TlsAdvancedConfiguration( + client_cert_pem=tls_cert if conf.tls_enabled else None, + client_key_pem=tls_key if conf.tls_enabled else None, + root_pem_cacerts=tls_ca_cert if conf.tls_enabled else None, ) + glide_config = GlideClientConfiguration( addresses=addresses, - client_name="continuous_writes_worker", + client_name="continuous_writes_client", request_timeout=500, credentials=credentials, reconnect_strategy=BackoffStrategy(num_of_retries=1, factor=50, exponent_base=2), + use_tls=True if conf.tls_enabled else False, + advanced_config=AdvancedGlideClientConfiguration(tls_config=tls_config), ) + return await GlideClient.create(glide_config) @asynccontextmanager diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index d19d773..9974b44 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -50,12 +50,14 @@ async def assert_continuous_writes_increasing( hostnames: list[str], username: str, password: str, + tls_enabled: bool = False, ) -> None: """Assert that the continuous writes are increasing.""" async with create_valkey_client( hostnames, username=username, password=password, + tls_enabled=tls_enabled, ) as client: writes_count = await client.llen(KEY) await asyncio.sleep(10) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index 6a2bffc..a4e7306 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -198,8 +198,8 @@ def is_unit_reachable_k8s(namespace: str, source_pod_name: str, to_host: str) -> client.V1Container( name="netshoot", image="nicolaka/netshoot", - # Ping once (-c 1), wait up to 2 seconds for a response (-W 2) - command=["ping", "-c", "1", "-W", "2", to_host], + # Ping five times (-c 5), wait up to 2 seconds for a response (-W 2) + command=["ping", "-c", "5", "-W", "2", to_host], ) ], ), @@ -256,7 +256,7 @@ def is_unit_reachable_lxd(from_host: str, to_host: str) -> bool: for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10)): with attempt: ping = subprocess.call( - f"lxc exec {from_host} -- ping -c 5 {to_host}".split(), + f"lxc exec {from_host} -- ping -c 5 -W 2 {to_host}".split(), stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, ) @@ -269,11 +269,14 @@ def is_unit_reachable_lxd(from_host: str, to_host: str) -> bool: return False -def is_unit_reachable(from_host: str, to_host: str, substrate: Substrate) -> bool: +def is_unit_reachable( + juju: jubilant.Juju, from_host: str, to_host: str, substrate: Substrate +) -> bool: """Test network reachability to a unit based on the substrate.""" + assert juju.model, "Juju client must be connected to a model before checking unit reachability" match substrate: case Substrate.K8S: - return is_unit_reachable_k8s("testing", from_host, to_host) + return is_unit_reachable_k8s(juju.model, from_host, to_host) case Substrate.VM: return is_unit_reachable_lxd(from_host, to_host) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 4401942..55fffaf 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -5,8 +5,12 @@ import logging import jubilant +import pytest from literals import Substrate +from tests.integration.cw_helpers import ( + assert_continuous_writes_increasing, +) from tests.integration.ha.helpers.helpers import ( cut_network_from_unit, get_unit_name_from_primary_ip, @@ -17,8 +21,11 @@ from tests.integration.helpers import ( APP_NAME, IMAGE_RESOURCE, + TLS_CHANNEL, + TLS_NAME, CharmUsers, are_apps_active_and_agents_idle, + download_client_certificate_from_unit, get_cluster_hostnames, get_number_connected_replicas, get_password, @@ -30,7 +37,10 @@ NUM_UNITS = 3 -def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) -> None: +@pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) +def test_build_and_deploy( + tls_enabled: bool, charm: str, juju: jubilant.Juju, substrate: Substrate +) -> None: """Build the charm-under-test and deploy it with three units.""" juju.deploy( charm, @@ -38,6 +48,11 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) num_units=NUM_UNITS, trust=True, ) + + if tls_enabled: + juju.deploy(TLS_NAME, channel=TLS_CHANNEL) + juju.integrate(f"{APP_NAME}:client-certificates", TLS_NAME) + juju.wait( lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), timeout=600, @@ -48,15 +63,29 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) ) -async def test_network_cut_primary(juju: jubilant.Juju, substrate: Substrate, chaos_mesh) -> None: +@pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) +async def test_network_cut_primary( + tls_enabled: bool, juju: jubilant.Juju, substrate: Substrate, chaos_mesh, c_writes +) -> None: """Cut the network to the primary unit and verify that a new primary is elected.""" + if tls_enabled: + download_client_certificate_from_unit(juju, APP_NAME) + c_writes.tls_enabled = tls_enabled + await c_writes.async_clear() + c_writes.start() + # Get the current primary unit - primary_ip = get_primary_ip(juju, APP_NAME) + primary_ip = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) assert primary_ip, "Failed to get primary endpoint from Juju status." # Cut the network to the primary unit logger.info("Cutting network to primary unit at %s", primary_ip) primary_unit_name = get_unit_name_from_primary_ip(juju, primary_ip, substrate) + if tls_enabled: + logger.info( + "TLS is enabled, ensuring client certificates are downloaded before network cut." + ) + download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) primary_hostname = hostname_from_unit(juju, primary_unit_name) machine_name = primary_hostname if substrate == Substrate.K8S: @@ -68,7 +97,7 @@ async def test_network_cut_primary(juju: jubilant.Juju, substrate: Substrate, ch if unit == primary_unit_name: continue assert not is_unit_reachable( - hostname_from_unit(juju, unit), primary_hostname, substrate + juju, hostname_from_unit(juju, unit), primary_hostname, substrate ), f"Unit {unit} can still reach the primary unit {primary_hostname} after network cut." logger.info( @@ -78,7 +107,7 @@ async def test_network_cut_primary(juju: jubilant.Juju, substrate: Substrate, ch ) while True: try: - new_primary_ip = get_primary_ip(juju, APP_NAME) + new_primary_ip = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) break except ValueError as e: logger.warning(f"Error getting primary IP after network cut: {e}") @@ -92,15 +121,23 @@ async def test_network_cut_primary(juju: jubilant.Juju, substrate: Substrate, ch "New primary IP after network cut: %s vs old primary IP: %s", new_primary_ip, primary_ip ) + hostnames = get_cluster_hostnames(juju, APP_NAME) # check replica number that it is down to NUM_UNITS - 2 number_of_replicas = await get_number_connected_replicas( - hostnames=get_cluster_hostnames(juju, APP_NAME), + hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=tls_enabled, ) assert number_of_replicas == NUM_UNITS - 2, ( f"Expected {NUM_UNITS - 2} connected replicas, got {number_of_replicas}." ) + await assert_continuous_writes_increasing( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=tls_enabled, + ) # restore network to the original primary unit logger.info("Restoring network to original primary unit at %s", primary_hostname) @@ -110,20 +147,36 @@ async def test_network_cut_primary(juju: jubilant.Juju, substrate: Substrate, ch status, APP_NAME, unit_count=NUM_UNITS, idle_period=30 ) ) + c_writes.update() for unit in juju.status().apps[APP_NAME].units: if unit == primary_unit_name: continue - assert is_unit_reachable(hostname_from_unit(juju, unit), primary_hostname, substrate), ( + assert is_unit_reachable( + juju, hostname_from_unit(juju, unit), primary_hostname, substrate + ), ( f"Unit {unit} cannot reach the original primary unit {primary_hostname} after network restoration." ) + if tls_enabled: + download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) + + hostnames = get_cluster_hostnames(juju, APP_NAME) # check replica number that it is back to NUM_UNITS - 1 number_of_replicas = await get_number_connected_replicas( - hostnames=get_cluster_hostnames(juju, APP_NAME), + hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=tls_enabled, ) assert number_of_replicas == NUM_UNITS - 1, ( f"Expected {NUM_UNITS - 1} connected replicas after network restoration, got {number_of_replicas}." ) + + await assert_continuous_writes_increasing( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=tls_enabled, + ) + await c_writes.async_clear() diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 611c26f..5495778 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -352,9 +352,11 @@ def fast_forward(juju: jubilant.Juju): juju.model_config({"update-status-hook-interval": old}) -def download_client_certificate_from_unit(juju: jubilant.Juju, app_name: str = APP_NAME) -> None: +def download_client_certificate_from_unit( + juju: jubilant.Juju, app_name: str = APP_NAME, unit_name: str | None = None +) -> None: """Copy the client certificate files from a unit to the host's filesystem.""" - unit = next(iter(juju.status().get_units(app_name))) + unit = unit_name or next(iter(juju.status().get_units(app_name))) model_info = juju.show_model() if model_info.type == "kubernetes": @@ -369,7 +371,7 @@ def download_client_certificate_from_unit(juju: jubilant.Juju, app_name: str = A juju.scp(f"{unit}:{tls_path}/ca_certs/{TLS_CA_FILE}", TLS_CA_FILE) -def get_primary_ip(juju: jubilant.Juju, app: str) -> str: +def get_primary_ip(juju: jubilant.Juju, app: str, tls_enabled: bool = False) -> str: """Get the primary node of the Valkey cluster. Returns: @@ -383,6 +385,7 @@ def get_primary_ip(juju: jubilant.Juju, app: str) -> str: username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju), command="info replication", + tls_enabled=tls_enabled, ).stdout # if master then we return the hostname if "role:master" in replication_info: @@ -459,12 +462,20 @@ async def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: def exec_valkey_cli( - hostname: str, username: str, password: str, command: str + hostname: str, + username: str, + password: str, + command: str, + tls_enabled: bool = False, + json: bool = False, ) -> valkey_cli_result: """Execute a Valkey CLI command and returns the output as a string.""" - command = f"valkey-cli --no-auth-warning -h {hostname} -p {CLIENT_PORT} --user {username} --pass {password} {command}" + pre_command = f"valkey-cli --no-auth-warning -h {hostname} -p {TLS_PORT if tls_enabled else CLIENT_PORT} --user {username} --pass {password} {'--json' if json else ''}" + if tls_enabled: + pre_command += " --tls --cert client.pem --key client.key --cacert client_ca.pem" + exec_command = f"{pre_command} {command}" result = subprocess.run( - command.split(), + exec_command.split(), check=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, @@ -565,6 +576,7 @@ async def get_number_connected_replicas( hostnames: list[str], username: str, password: str, + tls_enabled: bool = False, ) -> int: """Get the number of connected replicas in the Valkey cluster. @@ -577,7 +589,10 @@ async def get_number_connected_replicas( The number of connected replicas. """ async with create_valkey_client( - hostnames=hostnames, username=username, password=password + hostnames=hostnames, + username=username, + password=password, + tls_enabled=tls_enabled, ) as client: info = (await client.info([InfoSection.REPLICATION])).decode() search_result = re.search(r"connected_slaves:([\d+])", info) From 08fc054d5ca028180026d08124696fb02f677f15 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 16 Mar 2026 14:30:16 +0000 Subject: [PATCH 151/282] skip tls on k8s and add spread files --- tests/integration/ha/test_network_cut.py | 7 ++++++- tests/spread/k8s/test_network_cut_tls_off.py/task.yaml | 7 +++++++ tests/spread/vm/test_network_cut_tls_off.py/task.yaml | 7 +++++++ tests/spread/vm/test_network_cut_tls_on.py/task.yaml | 7 +++++++ 4 files changed, 27 insertions(+), 1 deletion(-) create mode 100644 tests/spread/k8s/test_network_cut_tls_off.py/task.yaml create mode 100644 tests/spread/vm/test_network_cut_tls_off.py/task.yaml create mode 100644 tests/spread/vm/test_network_cut_tls_on.py/task.yaml diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 55fffaf..b59f7b8 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -42,6 +42,9 @@ def test_build_and_deploy( tls_enabled: bool, charm: str, juju: jubilant.Juju, substrate: Substrate ) -> None: """Build the charm-under-test and deploy it with three units.""" + if tls_enabled and substrate == Substrate.K8S: + pytest.skip("Tests on k8s is the same as no IP will change") + juju.deploy( charm, resources=IMAGE_RESOURCE if substrate == Substrate.K8S else None, @@ -64,11 +67,13 @@ def test_build_and_deploy( @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) -async def test_network_cut_primary( +async def test_network_cut_primary( # noqa: C901 tls_enabled: bool, juju: jubilant.Juju, substrate: Substrate, chaos_mesh, c_writes ) -> None: """Cut the network to the primary unit and verify that a new primary is elected.""" if tls_enabled: + if substrate == Substrate.K8S: + pytest.skip("Tests on k8s is the same as no IP will change") download_client_certificate_from_unit(juju, APP_NAME) c_writes.tls_enabled = tls_enabled await c_writes.async_clear() diff --git a/tests/spread/k8s/test_network_cut_tls_off.py/task.yaml b/tests/spread/k8s/test_network_cut_tls_off.py/task.yaml new file mode 100644 index 0000000..a5a67c2 --- /dev/null +++ b/tests/spread/k8s/test_network_cut_tls_off.py/task.yaml @@ -0,0 +1,7 @@ +summary: test_network_cut.py +environment: + TEST_MODULE: ha/test_network_cut.py +execute: | + tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate k8s --alluredir="$SPREAD_TASK/allure-results" +artifacts: + - allure-results diff --git a/tests/spread/vm/test_network_cut_tls_off.py/task.yaml b/tests/spread/vm/test_network_cut_tls_off.py/task.yaml new file mode 100644 index 0000000..16fff46 --- /dev/null +++ b/tests/spread/vm/test_network_cut_tls_off.py/task.yaml @@ -0,0 +1,7 @@ +summary: test_network_cut.py +environment: + TEST_MODULE: ha/test_network_cut.py +execute: | + tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate vm -k "tls_off" --alluredir="$SPREAD_TASK/allure-results" +artifacts: + - allure-results diff --git a/tests/spread/vm/test_network_cut_tls_on.py/task.yaml b/tests/spread/vm/test_network_cut_tls_on.py/task.yaml new file mode 100644 index 0000000..dcf3558 --- /dev/null +++ b/tests/spread/vm/test_network_cut_tls_on.py/task.yaml @@ -0,0 +1,7 @@ +summary: test_network_cut.py +environment: + TEST_MODULE: ha/test_network_cut.py +execute: | + tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate vm -k "tls_on" --alluredir="$SPREAD_TASK/allure-results" +artifacts: + - allure-results From e798fc10bf6d7a47af5b53005b96ede04463ab6b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 16 Mar 2026 14:41:33 +0000 Subject: [PATCH 152/282] fix linter --- tests/integration/helpers.py | 1 + 1 file changed, 1 insertion(+) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 5495778..fd4e9e6 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -584,6 +584,7 @@ async def get_number_connected_replicas( hostnames: List of hostnames of the Valkey cluster nodes. username: The username for authentication. password: The password for authentication. + tls_enabled: Whether TLS certificates are needed. Returns: The number of connected replicas. From a0c601764ac1f92c35faa69278e29abe947ffa11 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 16 Mar 2026 15:26:31 +0000 Subject: [PATCH 153/282] clean cwrites even when test fails --- tests/integration/conftest.py | 8 ++++++++ tests/integration/ha/test_network_cut.py | 8 ++++++-- 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py index 423654a..f7d7251 100644 --- a/tests/integration/conftest.py +++ b/tests/integration/conftest.py @@ -31,6 +31,14 @@ def c_writes_runner(juju: jubilant.Juju, c_writes: ContinuousWrites): logger.info(c_writes.clear()) +@pytest.fixture(scope="function") +async def c_writes_async_clean(c_writes: ContinuousWrites): + """Clear continuous write operations at the end of the test.""" + yield + logger.info("Clearing continuous writes after test completion") + logger.info(await c_writes.async_clear()) + + @pytest.fixture(scope="session") def substrate(request) -> Substrate: """Substrate that we are testing.""" diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index b59f7b8..237fb03 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -68,7 +68,12 @@ def test_build_and_deploy( @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) async def test_network_cut_primary( # noqa: C901 - tls_enabled: bool, juju: jubilant.Juju, substrate: Substrate, chaos_mesh, c_writes + tls_enabled: bool, + juju: jubilant.Juju, + substrate: Substrate, + chaos_mesh, + c_writes, + c_writes_async_clean, ) -> None: """Cut the network to the primary unit and verify that a new primary is elected.""" if tls_enabled: @@ -184,4 +189,3 @@ async def test_network_cut_primary( # noqa: C901 password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=tls_enabled, ) - await c_writes.async_clear() From d00a189019df5f986afb6f2573bdc4f11ba6cce3 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 17 Mar 2026 08:52:24 +0000 Subject: [PATCH 154/282] remove f strings in loggers --- src/common/client.py | 2 +- src/common/locks.py | 44 +++++++++++++++++--------- src/core/models.py | 3 +- src/events/base_events.py | 17 ++-------- src/managers/cluster.py | 2 +- src/managers/sentinel.py | 27 ++++++++++++---- src/managers/tls.py | 2 +- tests/integration/conftest.py | 2 +- tests/integration/continuous_writes.py | 14 ++++---- tests/integration/cw_helpers.py | 2 +- tests/integration/ha/test_scaling.py | 4 ++- tests/integration/helpers.py | 20 +++++++++--- 12 files changed, 85 insertions(+), 54 deletions(-) diff --git a/src/common/client.py b/src/common/client.py index 731c981..9fdbc4b 100644 --- a/src/common/client.py +++ b/src/common/client.py @@ -143,7 +143,7 @@ def info_persistence(self, hostname: str) -> dict[str, str] | None: ) values = {} if not output.strip(): - logger.warning(f"No persistence info found on Valkey server at {hostname}.") + logger.warning("No persistence info found on Valkey server at %s.", hostname) return None for line in output.strip().splitlines(): if line.startswith("#"): diff --git a/src/common/locks.py b/src/common/locks.py index 7b9ab17..04fff90 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -105,7 +105,8 @@ def request_lock(self) -> bool: ) if self.state.unit_server.unit.is_leader(): logger.info( - f"Leader unit requesting {self.name} lock. Triggering lock request processing." + "Leader unit requesting %s lock. Triggering lock request processing.", + self.name, ) self.process() @@ -120,7 +121,8 @@ def release_lock(self) -> bool: ) if self.state.unit_server.unit.is_leader(): logger.info( - f"Leader unit releasing {self.name} lock. Triggering lock request processing." + "Leader unit releasing %s lock. Triggering lock request processing.", + self.name, ) self.process() @@ -129,7 +131,7 @@ def release_lock(self) -> bool: def process(self) -> None: """Process the lock requests and update the unit with the lock.""" if not self.state.unit_server.unit.is_leader(): - logger.info(f"Only the leader can process {self.name} lock requests.") + logger.info("Only the leader can process lock requests.") return if self.is_lock_free_to_give: @@ -197,12 +199,16 @@ def request_lock(self, timeout: int | None = None, primary_ip: str | None = None Returns: bool: True if the lock was acquired, False if the timeout was reached before acquiring the lock. """ - logger.debug(f"{self.charm.state.unit_server.unit_name} is requesting {self.name} lock.") + logger.debug( + "%s is requesting %s lock.", self.charm.state.unit_server.unit_name, self.name + ) retry_until = time.time() + timeout if timeout else None primary_ip = primary_ip or self.charm.sentinel_manager.get_primary_ip() if self.get_unit_with_lock(primary_ip) == self.charm.state.unit_server.unit_name: logger.debug( - f"{self.charm.state.unit_server.unit_name} already holds {self.name} lock. No need to request it again." + "%s already holds %s lock. No need to request it again.", + self.charm.state.unit_server.unit_name, + self.name, ) return True @@ -225,20 +231,26 @@ def request_lock(self, timeout: int | None = None, primary_ip: str | None = None ], ): logger.debug( - f"{self.charm.state.unit_server.unit_name} acquired {self.name} lock." + "%s acquired %s lock.", self.charm.state.unit_server.unit_name, self.name ) return True except ValkeyWorkloadCommandError: logger.warning( - f"{self.charm.state.unit_server.unit_name} failed to acquire {self.name} lock due to a workload command error. Retrying..." + "%s failed to acquire %s lock due to a workload command error. Retrying...", + self.charm.state.unit_server.unit_name, + self.name, ) if retry_until and time.time() > retry_until: logger.warning( - f"{self.charm.state.unit_server.unit_name} failed to acquire {self.name} lock within timeout. Giving up." + "%s failed to acquire %s lock within timeout. Giving up.", + self.charm.state.unit_server.unit_name, + self.name, ) return False logger.info( - f"{self.charm.state.unit_server.unit_name} failed to acquire {self.name} lock. Retrying in 5 seconds." + "%s failed to acquire %s lock. Retrying in 5 seconds.", + self.charm.state.unit_server.unit_name, + self.name, ) time.sleep(5) # update the primary ip in case a failover happens when we are waiting to acquire the lock @@ -263,10 +275,12 @@ def release_lock(self, primary_ip: str | None = None) -> bool: ) == "1" ): - logger.debug(f"{self.charm.state.unit_server.unit_name} released {self.name} lock.") + logger.debug("%s released %s lock.", self.charm.state.unit_server.unit_name, self.name) return True - else: - logger.warning( - f"{self.charm.state.unit_server.unit_name} failed to release {self.name} lock. It may not have held the lock or it may have already been released." - ) - return False + + logger.warning( + "%s failed to release %s lock. It may not have held the lock or it may have already been released.", + self.charm.state.unit_server.unit_name, + self.name, + ) + return False diff --git a/src/core/models.py b/src/core/models.py index 697e5a5..e4d6148 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -89,7 +89,8 @@ def update(self, items: dict[str, Any]) -> None: """Write to relation data.""" if not self.relation: logger.warning( - f"Fields {list(items.keys())} were attempted to be written on the relation before it exists." + "Fields %s were attempted to be written on the relation before it exists.", + list(items.keys()), ) return diff --git a/src/events/base_events.py b/src/events/base_events.py index b8f8c08..e63e6c2 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -267,7 +267,7 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: str(admin_secret_id) ) except (ops.ModelError, ops.SecretNotFoundError) as e: - logger.error(f"Could not access secret {admin_secret_id}: {e}") + logger.error("Could not access secret %s: %s", admin_secret_id, e) raise # generate passwords for all internal users if not specified in the user secret @@ -380,7 +380,7 @@ def _update_internal_users_password(self, secret_id: str) -> None: ) if any(key not in CharmUsers for key in secret_content.keys()): - logger.error(f"Invalid username in secret {secret_id}.") + logger.error("Invalid username in secret %s.", secret_id) self.charm.status.set_running_status( ClusterStatuses.PASSWORD_UPDATE_FAILED.value, scope="app", @@ -439,7 +439,6 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: # get scale down lock scale_down_lock = ScaleDownLock(self.charm) - self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.WAIT_FOR_LOCK}) self.charm.status.set_running_status( ScaleDownStatuses.WAIT_FOR_LOCK.value, scope="unit", @@ -484,9 +483,6 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: primary_ip == self.charm.state.unit_server.get_endpoint(self.charm.state.substrate) and len(active_sentinels) > 1 ): - self.charm.state.unit_server.update( - {"scale_down_state": ScaleDownState.WAIT_TO_FAILOVER} - ) logger.debug("Triggering sentinel failover on primary IP %s", primary_ip) self.charm.sentinel_manager.failover() primary_ip = self.charm.sentinel_manager.get_primary_ip() @@ -496,7 +492,6 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: ) # stop valkey and sentinel processes - self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.STOP_SERVICES}) self.charm.workload.stop() active_sentinels = [ ip @@ -505,18 +500,12 @@ def _on_storage_detaching(self, event: ops.StorageDetachingEvent) -> None: ] # reset sentinel states on other units - self.charm.state.unit_server.update( - { - "scale_down_state": ScaleDownState.RESET_SENTINEL, - "start_state": StartState.NOT_STARTED.value, - } - ) + self.charm.state.unit_server.update({"start_state": StartState.NOT_STARTED.value}) if active_sentinels: logger.debug("Resetting sentinel states on active units: %s", active_sentinels) self.charm.sentinel_manager.reset_sentinel_states(active_sentinels) # check health after scale down - self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.HEALTH_CHECK}) self.charm.sentinel_manager.verify_expected_replica_count(active_sentinels) # release lock scale_down_lock.release_lock(primary_ip=primary_ip) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index bbfae71..74574dc 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -80,7 +80,7 @@ def is_replica_synced(self) -> bool: try: return role_info[0] == "slave" and role_info[3] == "connected" except IndexError as e: - logger.warning(f"Unexpected role information format: {role_info}. Error: {e}") + logger.warning("Unexpected role information format: %s. Error: %s", role_info, e) return False @retry( diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index 7a04900..30a65e3 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -79,12 +79,16 @@ def is_sentinel_discovered(self) -> bool: } if self.state.endpoint not in discovered_sentinels: logger.warning( - f"Sentinel at {sentinel_ip} does not see local sentinel at {self.state.endpoint}." + "Sentinel at %s does not see local sentinel at %s.", + sentinel_ip, + self.state.endpoint, ) return False except ValkeyWorkloadCommandError: - logger.warning(f"Could not query sentinel at {sentinel_ip} for primary discovery.") + logger.warning( + "Could not query sentinel at %s for primary discovery.", sentinel_ip + ) return False return True @@ -154,7 +158,7 @@ def failover(self) -> None: client.failover_primary_coordinated(self.state.endpoint) client.is_failover_in_progress(self.state.endpoint) except ValkeyWorkloadCommandError as e: - logger.error(f"Failed to trigger failover: {e}") + logger.error("Failed to trigger failover: %s", e) raise SentinelFailoverError from e def reset_sentinel_states(self, sentinel_ips: list[str]) -> None: @@ -213,12 +217,15 @@ def target_sees_all_others(self, target_sentinel_ip: str, sentinel_ips: list[str } if discovered_sentinels != sentinel_ips_set: logger.warning( - f"Sentinel at {target_sentinel_ip} sees sentinels {discovered_sentinels}, expected {sentinel_ips_set}." + "Sentinel at %s sees sentinels %s, expected %s.", + target_sentinel_ip, + discovered_sentinels, + sentinel_ips_set, ) return False except ValkeyWorkloadCommandError: logger.warning( - f"Could not query sentinel at {target_sentinel_ip} for sentinel discovery." + "Could not query sentinel at %s for sentinel discovery.", target_sentinel_ip ) return False return True @@ -255,10 +262,16 @@ def verify_expected_replica_count(self, sentinel_ips: list[str]) -> None: number_replicas := len(client.replicas_primary(hostname=sentinel_ip)) ): logger.warning( - f"Sentinel at {sentinel_ip} sees {number_replicas} replicas, expected {expected_replicas}." + "Sentinel at %s sees %d replicas, expected %d.", + sentinel_ip, + number_replicas, + expected_replicas, ) raise SentinelIncorrectReplicaCountError( - f"Sentinel at {sentinel_ip} sees {number_replicas} replicas, expected {expected_replicas}." + "Sentinel at %s sees %d replicas, expected %d.", + sentinel_ip, + number_replicas, + expected_replicas, ) def get_active_sentinel_ips(self, hostname: str) -> list[str]: diff --git a/src/managers/tls.py b/src/managers/tls.py index 1e61a59..82e5a20 100644 --- a/src/managers/tls.py +++ b/src/managers/tls.py @@ -42,7 +42,7 @@ def set_tls_state(self, state: TLSState) -> None: Args: state (TLSState): The TLS state. """ - logger.debug(f"Setting TLS state to {state}") + logger.debug("Setting TLS state to %s", state) self.state.unit_server.update({"tls_client_state": state.value}) def set_cert_state(self, is_ready: bool) -> None: diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py index 423654a..36269e4 100644 --- a/tests/integration/conftest.py +++ b/tests/integration/conftest.py @@ -18,7 +18,7 @@ def c_writes(juju: jubilant.Juju): """Create instance of the ContinuousWrites.""" app = APP_NAME - logger.info(f"Creating ContinuousWrites instance for app with name {app}") + logger.info("Creating ContinuousWrites instance for app with name %s", app) return ContinuousWrites(juju, app) diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index b15c41c..3cc44bc 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -270,7 +270,7 @@ async def with_client(conf: SimpleNamespace): current_val = starting_number config = initial_config - proc_logger.info(f"Starting continuous async writes from {current_val}") + proc_logger.info("Starting continuous async writes from %s", current_val) try: while not event.is_set(): @@ -281,8 +281,8 @@ async def with_client(conf: SimpleNamespace): pass try: - proc_logger.info(f"Writing value: {current_val}") - proc_logger.info(f"Current endpoints={config.endpoints}") + proc_logger.info("Writing value: %s", current_val) + proc_logger.info("Current endpoints=%s", config.endpoints) async with with_client(config) as client: if not ( res := await asyncio.wait_for( @@ -290,10 +290,10 @@ async def with_client(conf: SimpleNamespace): ) ): raise WriteFailedError("LPUSH returned 0/None") - proc_logger.info(f"Length after write: {res}") + proc_logger.info("Length after write: %s", res) await asyncio.sleep(in_between_sleep) except Exception as e: - proc_logger.warning(f"Write failed at {current_val}: {e}") + proc_logger.warning("Write failed at %s: %s", current_val, e) finally: if event.is_set(): break @@ -319,7 +319,9 @@ async def with_client(conf: SimpleNamespace): time.sleep(1) if new_hostnames := get_active_hostnames(juju_env, "valkey") != hostnames: logger.info( - f"Hostnames changed from {hostnames} to {new_hostnames}, updating continuous writes client." + "Hostnames changed from %s to %s, updating continuous writes client.", + hostnames, + new_hostnames, ) hostnames = new_hostnames cw.update() diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index d19d773..0756328 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -85,4 +85,4 @@ def assert_continuous_writes_consistent( assert count == last_written_value + 1, ( f"endpoint: {endpoint}, expected count: {last_written_value + 1}, current count: {count}" ) - logger.info(f"Continuous writes are consistent on {endpoint}.") + logger.info("Continuous writes are consistent on %s.", endpoint) diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index 4880709..cf45599 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -280,7 +280,9 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_w ) assert primary_unit is not None, "Failed to identify primary unit for scale down test." logger.info( - f"Identified primary unit {primary_unit} with IP {primary_ip} for scale down test." + "Identified primary unit %s with IP %s for scale down test.", + primary_unit, + primary_ip, ) juju.remove_unit(primary_unit) juju.wait( diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 4de3c02..aaf1c3f 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -135,7 +135,7 @@ def does_message_match(expected_status_message: str, status: StatusObject) -> bo ) ) except KeyError as e: - logger.error(f"Error attempting to convert StatusObject to ops.StatusBase: {e}") + logger.error("Error attempting to convert StatusObject to ops.StatusBase: %s", e) return False @@ -416,7 +416,12 @@ async def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: total_bytes_target = target_gb * 1024 * 1024 * 1024 total_keys = total_bytes_target // value_size_bytes - logger.info(f"Targeting ~{target_gb}GB ({total_keys:,} keys of {value_size_bytes} bytes each)") + logger.info( + "Targeting ~%sGB (%s keys of %s bytes each)", + target_gb, + total_keys, + value_size_bytes, + ) start_time = time.time() keys_added = 0 @@ -440,15 +445,20 @@ async def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: elapsed = time.time() - start_time percent = (keys_added / total_keys) * 100 logger.info( - f"Progress: {percent:.1f}% | Keys: {keys_added:,} | Elapsed: {elapsed:.1f}s", + "Progress: %.1f%% | Keys: %s | Elapsed: %.1f s", + percent, + keys_added, + elapsed, ) except Exception as e: - logger.error(f"\nError: {e}") + logger.error("Error: %s", e) finally: total_time = time.time() - start_time logger.info( - f"\nSeeding complete! Added {keys_added:,} keys in {total_time:.2f} seconds." + "Seeding complete! Added %s keys in %.2f seconds.", + keys_added, + total_time, ) From abe43b9dfebf722cec536e064ce818ca08b673e4 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 17 Mar 2026 09:20:23 +0000 Subject: [PATCH 155/282] charm level feedback --- src/common/locks.py | 44 +++++++++++++++--------------------- src/core/models.py | 9 +++----- src/managers/cluster.py | 5 ++-- src/managers/sentinel.py | 11 +++++---- tests/integration/helpers.py | 3 +-- 5 files changed, 30 insertions(+), 42 deletions(-) diff --git a/src/common/locks.py b/src/common/locks.py index 04fff90..b1593e8 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -4,12 +4,12 @@ """Collection of locks for cluster operations.""" import logging -import time from abc import abstractmethod from typing import TYPE_CHECKING, Protocol, override +from tenacity import Retrying, stop_after_attempt, wait_fixed + from common.client import ValkeyClient -from common.exceptions import ValkeyWorkloadCommandError from core.cluster_state import ClusterState from literals import CharmUsers @@ -202,7 +202,6 @@ def request_lock(self, timeout: int | None = None, primary_ip: str | None = None logger.debug( "%s is requesting %s lock.", self.charm.state.unit_server.unit_name, self.name ) - retry_until = time.time() + timeout if timeout else None primary_ip = primary_ip or self.charm.sentinel_manager.get_primary_ip() if self.get_unit_with_lock(primary_ip) == self.charm.state.unit_server.unit_name: logger.debug( @@ -216,8 +215,22 @@ def request_lock(self, timeout: int | None = None, primary_ip: str | None = None logger.debug("Last unit in the cluster scaling down. Lock will be skipped.") return True - while True: - try: + number_of_retries = min(timeout // 5 if timeout else 1, 1) + + for attempt in Retrying( + wait=wait_fixed(5), + stop=stop_after_attempt(number_of_retries), + retry_error_callback=lambda _: False, + after=lambda retry_state: logger.info( + "%s failed to acquire %s lock on attempt %d. Retrying in 5 seconds.", + self.charm.state.unit_server.unit_name, + self.name, + retry_state.attempt_number, + ), + ): + with attempt: + # update the primary ip in case a failover happens when we are waiting to acquire the lock + primary_ip = self.charm.sentinel_manager.get_primary_ip() if self.client.set( hostname=primary_ip, key=self.lock_key, @@ -234,27 +247,6 @@ def request_lock(self, timeout: int | None = None, primary_ip: str | None = None "%s acquired %s lock.", self.charm.state.unit_server.unit_name, self.name ) return True - except ValkeyWorkloadCommandError: - logger.warning( - "%s failed to acquire %s lock due to a workload command error. Retrying...", - self.charm.state.unit_server.unit_name, - self.name, - ) - if retry_until and time.time() > retry_until: - logger.warning( - "%s failed to acquire %s lock within timeout. Giving up.", - self.charm.state.unit_server.unit_name, - self.name, - ) - return False - logger.info( - "%s failed to acquire %s lock. Retrying in 5 seconds.", - self.charm.state.unit_server.unit_name, - self.name, - ) - time.sleep(5) - # update the primary ip in case a failover happens when we are waiting to acquire the lock - primary_ip = self.charm.sentinel_manager.get_primary_ip() @property def is_held_by_this_unit(self) -> bool: diff --git a/src/core/models.py b/src/core/models.py index e4d6148..77cfdd9 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -141,12 +141,9 @@ def is_started(self) -> bool: @property def is_being_removed(self) -> bool: """Check if the unit is being removed from the cluster.""" - return self.model.scale_down_state in { - ScaleDownState.STOP_SERVICES.value, - ScaleDownState.RESET_SENTINEL.value, - ScaleDownState.HEALTH_CHECK.value, - ScaleDownState.GOING_AWAY.value, - } + return ( + self.model.scale_down_state == ScaleDownState.GOING_AWAY.value if self.model else False + ) @property def is_active(self) -> bool: diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 74574dc..b6b4009 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -159,8 +159,7 @@ def _get_start_status(self) -> StatusObject | None: def _get_scale_down_status(self) -> StatusObject | None: """Get the current scale down status of the unit.""" - match self.state.unit_server.model.scale_down_state: - case ScaleDownState.GOING_AWAY.value: - return ScaleDownStatuses.GOING_AWAY.value + if self.state.unit_server.model.scale_down_state == ScaleDownState.WAIT_FOR_LOCK.value: + return ScaleDownStatuses.GOING_AWAY.value return None diff --git a/src/managers/sentinel.py b/src/managers/sentinel.py index 30a65e3..41cfe41 100644 --- a/src/managers/sentinel.py +++ b/src/managers/sentinel.py @@ -72,22 +72,22 @@ def is_sentinel_discovered(self) -> bool: client = self._get_sentinel_client() - for sentinel_ip in active_sentinels: + for sentinel_host in active_sentinels: try: discovered_sentinels = { - sentinel["ip"] for sentinel in client.sentinels_primary(hostname=sentinel_ip) + sentinel["ip"] for sentinel in client.sentinels_primary(hostname=sentinel_host) } if self.state.endpoint not in discovered_sentinels: logger.warning( "Sentinel at %s does not see local sentinel at %s.", - sentinel_ip, + sentinel_host, self.state.endpoint, ) return False except ValkeyWorkloadCommandError: logger.warning( - "Could not query sentinel at %s for primary discovery.", sentinel_ip + "Could not query sentinel at %s for primary discovery.", sentinel_host ) return False return True @@ -156,7 +156,8 @@ def failover(self) -> None: client = self._get_sentinel_client() try: client.failover_primary_coordinated(self.state.endpoint) - client.is_failover_in_progress(self.state.endpoint) + if client.is_failover_in_progress(self.state.endpoint): + raise SentinelFailoverError("Failover is in progress after triggering failover.") except ValkeyWorkloadCommandError as e: logger.error("Failed to trigger failover: %s", e) raise SentinelFailoverError from e diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index aaf1c3f..c13d6a6 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -386,8 +386,7 @@ def get_primary_ip(juju: jubilant.Juju, app: str) -> str: if "role:master" in replication_info: return hostnames[0] # extract ip - match = re.search(r"master_host:([^\s]+)", replication_info) - if not match: + if not (match := re.search(r"master_host:([^\s]+)", replication_info)): raise ValueError("Could not find master_host in replication info") return match.group(1) From d801de9d2bfac44379d23f6b55314c24d9305b8d Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 17 Mar 2026 09:35:20 +0000 Subject: [PATCH 156/282] rename ip to endpoint and add existing app --- tests/integration/ha/test_scaling.py | 93 ++++++++++++++++------------ tests/integration/helpers.py | 13 ++++ 2 files changed, 66 insertions(+), 40 deletions(-) diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index cf45599..1aff2d0 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -16,6 +16,7 @@ APP_NAME, IMAGE_RESOURCE, are_apps_active_and_agents_idle, + existing_app, get_cluster_hostnames, get_number_connected_replicas, get_password, @@ -33,6 +34,9 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) -> None: """Build the charm-under-test and deploy it with three units.""" + if existing_app(juju): + return + juju.deploy( charm, resources=IMAGE_RESOURCE if substrate == Substrate.K8S else None, @@ -56,23 +60,24 @@ async def test_seed_data(juju: jubilant.Juju) -> None: async def test_scale_up(juju: jubilant.Juju, c_writes) -> None: """Make sure new units are added to the valkey downtime.""" - init_units_count = len(juju.status().apps[APP_NAME].units) + app_name = existing_app(juju) or APP_NAME + init_units_count = len(juju.status().apps[app_name].units) await c_writes.async_clear() c_writes.start() # scale up - juju.add_unit(APP_NAME, num_units=NUM_UNITS - init_units_count) + juju.add_unit(app_name, num_units=NUM_UNITS - init_units_count) juju.wait( lambda status: are_apps_active_and_agents_idle( - status, APP_NAME, idle_period=10, unit_count=NUM_UNITS + status, app_name, idle_period=10, unit_count=NUM_UNITS ), timeout=1200, ) - num_units = len(juju.status().apps[APP_NAME].units) + num_units = len(juju.status().apps[app_name].units) assert num_units == NUM_UNITS, f"Expected {NUM_UNITS} units, got {num_units}." # check if all units have been added to the cluster - hostnames = get_cluster_hostnames(juju, APP_NAME) + hostnames = get_cluster_hostnames(juju, app_name) connected_replicas = await get_number_connected_replicas( hostnames=hostnames, @@ -100,8 +105,9 @@ async def test_scale_up(juju: jubilant.Juju, c_writes) -> None: async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_writes) -> None: """Make sure scale down operations complete successfully.""" + app_name = existing_app(juju) or APP_NAME number_of_replicas = await get_number_connected_replicas( - hostnames=get_cluster_hostnames(juju, APP_NAME), + hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -114,17 +120,17 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ await asyncio.sleep(10) # let the continuous writes write some data # scale down - remove_number_units(juju, APP_NAME, num_units=1, substrate=substrate) + remove_number_units(juju, app_name, num_units=1, substrate=substrate) juju.wait( lambda status: are_apps_active_and_agents_idle( - status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=10 + status, app_name, unit_count=NUM_UNITS - 1, idle_period=10 ) ) - num_units = len(juju.status().get_units(APP_NAME)) + num_units = len(juju.status().get_units(app_name)) assert num_units == NUM_UNITS - 1, f"Expected {NUM_UNITS - 1} units, got {num_units}." number_of_replicas = await get_number_connected_replicas( - hostnames=get_cluster_hostnames(juju, APP_NAME), + hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -136,7 +142,7 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ c_writes.update() await assert_continuous_writes_increasing( - hostnames=get_cluster_hostnames(juju, APP_NAME), + hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -145,7 +151,7 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ logger.info(await c_writes.async_stop()) assert_continuous_writes_consistent( - hostnames=get_cluster_hostnames(juju, APP_NAME), + hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -156,17 +162,18 @@ async def test_scale_down_multiple_units( juju: jubilant.Juju, substrate: Substrate, c_writes ) -> None: """Make sure multiple scale down operations complete successfully.""" - number_current_units = len(juju.status().apps[APP_NAME].units) - juju.add_unit(APP_NAME, num_units=(NUM_UNITS + 1) - number_current_units) + app_name = existing_app(juju) or APP_NAME + number_current_units = len(juju.status().apps[app_name].units) + juju.add_unit(app_name, num_units=(NUM_UNITS + 1) - number_current_units) juju.wait( lambda status: are_apps_active_and_agents_idle( - status, APP_NAME, idle_period=10, unit_count=NUM_UNITS + 1 + status, app_name, idle_period=10, unit_count=NUM_UNITS + 1 ), timeout=1200, ) number_of_replicas = await get_number_connected_replicas( - hostnames=get_cluster_hostnames(juju, APP_NAME), + hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -179,18 +186,18 @@ async def test_scale_down_multiple_units( await asyncio.sleep(10) # let the continuous writes write some data # scale down multiple units - remove_number_units(juju, APP_NAME, num_units=2, substrate=substrate) + remove_number_units(juju, app_name, num_units=2, substrate=substrate) juju.wait( lambda status: are_apps_active_and_agents_idle( - status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=10 + status, app_name, unit_count=NUM_UNITS - 1, idle_period=10 ) ) - num_units = len(juju.status().get_units(APP_NAME)) + num_units = len(juju.status().get_units(app_name)) assert num_units == NUM_UNITS - 1, f"Expected {NUM_UNITS - 1} units, got {num_units}." number_of_replicas = await get_number_connected_replicas( - hostnames=get_cluster_hostnames(juju, APP_NAME), + hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -201,7 +208,7 @@ async def test_scale_down_multiple_units( c_writes.update() await assert_continuous_writes_increasing( - hostnames=get_cluster_hostnames(juju, APP_NAME), + hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -210,34 +217,35 @@ async def test_scale_down_multiple_units( logger.info(await c_writes.async_stop()) assert_continuous_writes_consistent( - hostnames=get_cluster_hostnames(juju, APP_NAME), + hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) await c_writes.async_clear() -async def test_scale_down_to_zero_and_back( +async def test_scale_down_to_zero_and_back_up( juju: jubilant.Juju, substrate: Substrate, c_writes ) -> None: """Make sure that removing all units and then adding them again works.""" + app_name = existing_app(juju) or APP_NAME # remove all remaining units remove_number_units( - juju, APP_NAME, num_units=len(juju.status().apps[APP_NAME].units), substrate=substrate + juju, app_name, num_units=len(juju.status().apps[app_name].units), substrate=substrate ) - juju.wait(lambda status: len(juju.status().get_units(APP_NAME)) == 0) + juju.wait(lambda status: len(juju.status().get_units(app_name)) == 0) # scale up again - juju.add_unit(APP_NAME, num_units=NUM_UNITS) + juju.add_unit(app_name, num_units=NUM_UNITS) juju.wait( lambda status: are_apps_active_and_agents_idle( - status, APP_NAME, unit_count=NUM_UNITS, idle_period=10 + status, app_name, unit_count=NUM_UNITS, idle_period=10 ), timeout=1200, ) - hostnames = get_cluster_hostnames(juju, APP_NAME) + hostnames = get_cluster_hostnames(juju, app_name) connected_replicas = await get_number_connected_replicas( hostnames=hostnames, @@ -270,31 +278,35 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_w if substrate == Substrate.K8S: pytest.skip("Primary unit can only targeted on VM") + app_name = existing_app(juju) or APP_NAME + await c_writes.async_clear() c_writes.start() - primary_ip = get_primary_ip(juju, APP_NAME) + primary_endpoint = get_primary_ip(juju, app_name) primary_unit = next( unit - for unit, unit_value in juju.status().get_units(APP_NAME).items() - if unit_value.public_address == primary_ip + for unit, unit_value in juju.status().get_units(app_name).items() + if unit_value.public_address == primary_endpoint ) assert primary_unit is not None, "Failed to identify primary unit for scale down test." logger.info( - "Identified primary unit %s with IP %s for scale down test.", + "Identified primary unit %s with endpoint %s for scale down test.", primary_unit, - primary_ip, + primary_endpoint, ) juju.remove_unit(primary_unit) juju.wait( lambda status: are_apps_active_and_agents_idle( - status, APP_NAME, unit_count=NUM_UNITS - 1, idle_period=10 + status, app_name, unit_count=NUM_UNITS - 1, idle_period=10 ) ) c_writes.update() - new_primary_ip = get_primary_ip(juju, APP_NAME) - assert new_primary_ip != primary_ip, "Primary IP did not change after removing primary unit." - logger.info(f"New primary IP after scale down is {new_primary_ip}.") - hostnames = get_cluster_hostnames(juju, APP_NAME) + new_primary_endpoint = get_primary_ip(juju, app_name) + assert new_primary_endpoint != primary_endpoint, ( + "Primary endpoint did not change after removing primary unit." + ) + logger.info(f"New primary endpoint after scale down is {new_primary_endpoint}.") + hostnames = get_cluster_hostnames(juju, app_name) await assert_continuous_writes_increasing( hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN.value, @@ -312,10 +324,11 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_w def test_scale_down_remove_application(juju: jubilant.Juju) -> None: """Make sure the application can be removed.""" - juju.remove_application(APP_NAME) + app_name = existing_app(juju) or APP_NAME + juju.remove_application(app_name) juju.wait( - lambda status: APP_NAME not in status.apps, + lambda status: app_name not in status.apps, timeout=600, delay=5, ) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index c13d6a6..d62cba5 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -678,3 +678,16 @@ def get_data_bag( else {} ) return {unit_name: local_data} | remote_data + + +def existing_app(juju: jubilant.Juju) -> str | None: + """Return the name of an existing valkey cluster. + + Returns: + str | None: name of an application deployment for `valkey` if it exists, None otherwise. + """ + for app_name, app_status in juju.status().apps.items(): + if "valkey" == app_status.charm_name: + return app_name + + return None From 4dc634038cf78353540daf13dd19377ed620e177 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 17 Mar 2026 09:47:49 +0000 Subject: [PATCH 157/282] add support for existing app in scale tests --- tests/integration/ha/test_scaling.py | 84 +++++++++++++++++++--------- 1 file changed, 57 insertions(+), 27 deletions(-) diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index 1aff2d0..5574b83 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -66,15 +66,17 @@ async def test_scale_up(juju: jubilant.Juju, c_writes) -> None: c_writes.start() # scale up - juju.add_unit(app_name, num_units=NUM_UNITS - init_units_count) + juju.add_unit(app_name, num_units=2) juju.wait( lambda status: are_apps_active_and_agents_idle( - status, app_name, idle_period=10, unit_count=NUM_UNITS + status, app_name, idle_period=10, unit_count=init_units_count + 2 ), timeout=1200, ) num_units = len(juju.status().apps[app_name].units) - assert num_units == NUM_UNITS, f"Expected {NUM_UNITS} units, got {num_units}." + assert num_units == init_units_count + 2, ( + f"Expected {init_units_count + 2} units, got {num_units}." + ) # check if all units have been added to the cluster hostnames = get_cluster_hostnames(juju, app_name) @@ -84,8 +86,8 @@ async def test_scale_up(juju: jubilant.Juju, c_writes) -> None: username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) - assert connected_replicas == NUM_UNITS - 1, ( - f"Expected {NUM_UNITS - 1} connected replicas, got {connected_replicas}." + assert connected_replicas == init_units_count + 1, ( + f"Expected {init_units_count + 1} connected replicas, got {connected_replicas}." ) await assert_continuous_writes_increasing( @@ -106,13 +108,25 @@ async def test_scale_up(juju: jubilant.Juju, c_writes) -> None: async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_writes) -> None: """Make sure scale down operations complete successfully.""" app_name = existing_app(juju) or APP_NAME + init_units_count = len(juju.status().apps[app_name].units) + + if init_units_count < 1: + juju.add_unit(app_name, num_units=NUM_UNITS - init_units_count) + init_units_count = NUM_UNITS + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, app_name, idle_period=10, unit_count=init_units_count + ), + timeout=1200, + ) + number_of_replicas = await get_number_connected_replicas( hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) - assert number_of_replicas == NUM_UNITS - 1, ( - f"Expected {NUM_UNITS - 1} connected replicas, got {number_of_replicas}." + assert number_of_replicas == init_units_count - 1, ( + f"Expected {init_units_count - 1} connected replicas, got {number_of_replicas}." ) await c_writes.async_clear() @@ -123,19 +137,21 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ remove_number_units(juju, app_name, num_units=1, substrate=substrate) juju.wait( lambda status: are_apps_active_and_agents_idle( - status, app_name, unit_count=NUM_UNITS - 1, idle_period=10 + status, app_name, unit_count=init_units_count - 1, idle_period=10 ) ) num_units = len(juju.status().get_units(app_name)) - assert num_units == NUM_UNITS - 1, f"Expected {NUM_UNITS - 1} units, got {num_units}." + assert num_units == init_units_count - 1, ( + f"Expected {init_units_count - 1} units, got {num_units}." + ) number_of_replicas = await get_number_connected_replicas( hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) - assert number_of_replicas == NUM_UNITS - 2, ( - f"Expected {NUM_UNITS - 2} connected replicas, got {number_of_replicas}." + assert number_of_replicas == init_units_count - 2, ( + f"Expected {init_units_count - 2} connected replicas, got {number_of_replicas}." ) # update hostnames after scale down @@ -147,7 +163,7 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) - logger.info("Stopping continuous writes after scale up test.") + logger.info("Stopping continuous writes after scale down test.") logger.info(await c_writes.async_stop()) assert_continuous_writes_consistent( @@ -163,22 +179,24 @@ async def test_scale_down_multiple_units( ) -> None: """Make sure multiple scale down operations complete successfully.""" app_name = existing_app(juju) or APP_NAME - number_current_units = len(juju.status().apps[app_name].units) - juju.add_unit(app_name, num_units=(NUM_UNITS + 1) - number_current_units) - juju.wait( - lambda status: are_apps_active_and_agents_idle( - status, app_name, idle_period=10, unit_count=NUM_UNITS + 1 - ), - timeout=1200, - ) + init_units_count = len(juju.status().apps[app_name].units) + if init_units_count < NUM_UNITS + 1: + juju.add_unit(app_name, num_units=(NUM_UNITS + 1) - init_units_count) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, app_name, idle_period=10, unit_count=NUM_UNITS + 1 + ), + timeout=1200, + ) + init_units_count = NUM_UNITS + 1 number_of_replicas = await get_number_connected_replicas( hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) - assert number_of_replicas == NUM_UNITS, ( - f"Expected {NUM_UNITS} connected replicas, got {number_of_replicas}." + assert number_of_replicas == init_units_count - 1, ( + f"Expected {init_units_count - 1} connected replicas, got {number_of_replicas}." ) await c_writes.async_clear() @@ -190,19 +208,21 @@ async def test_scale_down_multiple_units( juju.wait( lambda status: are_apps_active_and_agents_idle( - status, app_name, unit_count=NUM_UNITS - 1, idle_period=10 + status, app_name, unit_count=init_units_count - 2, idle_period=10 ) ) num_units = len(juju.status().get_units(app_name)) - assert num_units == NUM_UNITS - 1, f"Expected {NUM_UNITS - 1} units, got {num_units}." + assert num_units == init_units_count - 2, ( + f"Expected {init_units_count - 2} units, got {num_units}." + ) number_of_replicas = await get_number_connected_replicas( hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) - assert number_of_replicas == NUM_UNITS - 2, ( - f"Expected {NUM_UNITS - 2} connected replicas, got {number_of_replicas}." + assert number_of_replicas == init_units_count - 3, ( + f"Expected {init_units_count - 3} connected replicas, got {number_of_replicas}." ) c_writes.update() @@ -279,6 +299,16 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_w pytest.skip("Primary unit can only targeted on VM") app_name = existing_app(juju) or APP_NAME + init_units_count = len(juju.status().apps[app_name].units) + if init_units_count < NUM_UNITS: + juju.add_unit(app_name, num_units=NUM_UNITS - init_units_count) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, app_name, idle_period=10, unit_count=NUM_UNITS + ), + timeout=1200, + ) + init_units_count = NUM_UNITS await c_writes.async_clear() c_writes.start() @@ -297,7 +327,7 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_w juju.remove_unit(primary_unit) juju.wait( lambda status: are_apps_active_and_agents_idle( - status, app_name, unit_count=NUM_UNITS - 1, idle_period=10 + status, app_name, unit_count=init_units_count - 1, idle_period=10 ) ) c_writes.update() From 4e399a874ec896d756633f2bbc1ad8676c2ef603 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 17 Mar 2026 10:04:07 +0000 Subject: [PATCH 158/282] patch is_failover_in_progress --- tests/unit/test_scaledown.py | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tests/unit/test_scaledown.py b/tests/unit/test_scaledown.py index d4cd7cc..81f472b 100644 --- a/tests/unit/test_scaledown.py +++ b/tests/unit/test_scaledown.py @@ -133,7 +133,9 @@ def test_primary(cloud_spec): patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="valkey-0"), patch("workload_k8s.ValkeyK8sWorkload.stop") as mock_stop, patch("common.client.SentinelClient.failover_primary_coordinated") as mock_failover, - patch("common.client.SentinelClient.is_failover_in_progress") as mock_failover_in_progress, + patch( + "common.client.SentinelClient.is_failover_in_progress", return_value=False + ) as mock_failover_in_progress, patch("common.client.SentinelClient.reset") as mock_reset, patch( "common.client.SentinelClient.sentinels_primary", From b229e7d2214eadcc32f47ef5b3518a0a745c0d70 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 17 Mar 2026 13:40:22 +0000 Subject: [PATCH 159/282] simplify code --- src/common/exceptions.py | 4 ---- src/events/base_events.py | 37 +++---------------------------------- src/events/tls.py | 14 ++++++++++++++ src/managers/cluster.py | 9 --------- 4 files changed, 17 insertions(+), 47 deletions(-) diff --git a/src/common/exceptions.py b/src/common/exceptions.py index 92b8413..26ced3d 100644 --- a/src/common/exceptions.py +++ b/src/common/exceptions.py @@ -66,7 +66,3 @@ class RequestingLockTimedOutError(Exception): class ValkeyCertificatesNotReadyError(Exception): """Custom Exception if not all units have stored the TLS certificates.""" - - -class TLSCertificatesRequireRefreshError(Exception): - """Custom Exception if the TLS certificates require refresh due to changes in SANs.""" diff --git a/src/events/base_events.py b/src/events/base_events.py index 8d3c143..0c964a2 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -11,7 +11,6 @@ from common.exceptions import ( RequestingLockTimedOutError, - TLSCertificatesRequireRefreshError, ValkeyACLLoadError, ValkeyCannotGetPrimaryIPError, ValkeyConfigSetError, @@ -292,12 +291,9 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: self.charm.state.unit_server.model.private_ip and self.charm.state.bind_address != self.charm.state.unit_server.model.private_ip ): - try: - self._on_ip_change() - except (ValkeyCannotGetPrimaryIPError, TLSCertificatesRequireRefreshError) as e: - logger.error(e) - event.defer() - return + self.charm.config_manager.configure_services( + self.charm.sentinel_manager.get_primary_ip() + ) self.charm.state.unit_server.update( { @@ -536,30 +532,3 @@ def _set_state_for_going_away(self) -> None: ) self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY}) - - def _on_ip_change(self) -> None: - """Handle changes to the unit's IP address.""" - # ip changed regenerate certs - if self.charm.tls_manager.certificate_sans_require_update(): - if not self.charm.state.client_tls_relation: - self.charm.tls_manager.create_and_store_self_signed_certificate() - else: - self.charm.tls_events.refresh_tls_certificates_event.emit() - raise TLSCertificatesRequireRefreshError( - "Certificate SANs require update, emitted event to refresh certificates" - ) - - # reconfigure services with new IP - self.charm.config_manager.configure_services(self.charm.sentinel_manager.get_primary_ip()) - - # try to hot reload the new configuration, if it fails, restart the workload to apply the new IP address - try: - self.charm.cluster_manager.update_endpoint() - tls_config = self.charm.config_manager.generate_tls_config() - self.charm.cluster_manager.reload_tls_settings(tls_config) - except ValkeyWorkloadCommandError as e: - logger.warning("Failed to update endpoint configuration on workload: %s", e) - logger.warning("Restarting valkey") - self.charm.workload.restart(self.charm.workload.valkey_service) - - self.charm.sentinel_manager.restart_service() diff --git a/src/events/tls.py b/src/events/tls.py index 8889856..5a23850 100644 --- a/src/events/tls.py +++ b/src/events/tls.py @@ -68,6 +68,7 @@ def __init__(self, charm: "ValkeyCharm"): self.framework.observe( self.charm.on[PEER_RELATION].relation_created, self._on_peer_relation_created ) + self.framework.observe(self.charm.on.config_changed, self._on_config_changed) def _on_peer_relation_created(self, event: ops.RelationCreatedEvent) -> None: """Set up self-signed certificates for peer TLS by default.""" @@ -213,3 +214,16 @@ def _enable_client_tls(self) -> None: tls_config = self.charm.config_manager.generate_tls_config() self.charm.cluster_manager.reload_tls_settings(tls_config) self.charm.sentinel_manager.restart_service() + + def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: + """Handle the `config-changed` event.""" + if self.charm.tls_manager.certificate_sans_require_update(): + if not self.charm.state.client_tls_relation: + self.charm.tls_manager.create_and_store_self_signed_certificate() + else: + self.charm.tls_events.refresh_tls_certificates_event.emit() + event.defer() + + # TODO rolling ops + self.charm.workload.restart(self.charm.workload.valkey_service) + self.charm.sentinel_manager.restart_service() diff --git a/src/managers/cluster.py b/src/managers/cluster.py index c3d3281..b6b4009 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -67,15 +67,6 @@ def update_primary_auth(self) -> None: ): raise ValkeyConfigSetError("Could not set primaryauth on Valkey server.") - def update_endpoint(self) -> None: - """Update the bind address runtime configuration on the Valkey server.""" - client = self._get_valkey_client() - for parameter in ["bind", "replica-announce-ip"]: - if not client.config_set( - hostname=self.state.endpoint, parameter=parameter, value=self.state.endpoint - ): - raise ValkeyConfigSetError(f"Could not set {parameter} on Valkey server.") - @retry( wait=wait_fixed(5), stop=stop_after_attempt(5), From be5bd0866706e7144113b2d3a60324f836200669 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 17 Mar 2026 14:56:06 +0000 Subject: [PATCH 160/282] fix bug and unit tests --- src/common/locks.py | 1 + src/events/base_events.py | 7 ---- src/events/tls.py | 31 ++++++++++------ tests/unit/test_charm.py | 76 +++++++++++++++++++++++---------------- 4 files changed, 68 insertions(+), 47 deletions(-) diff --git a/src/common/locks.py b/src/common/locks.py index 184ce24..7589861 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -4,6 +4,7 @@ """Collection of locks for cluster operations.""" import logging +import time from abc import abstractmethod from typing import TYPE_CHECKING, Protocol, override diff --git a/src/events/base_events.py b/src/events/base_events.py index 0c964a2..8642b07 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -295,13 +295,6 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: self.charm.sentinel_manager.get_primary_ip() ) - self.charm.state.unit_server.update( - { - "hostname": self.charm.state.hostname, - "private_ip": self.charm.state.bind_address, - } - ) - if not self.charm.unit.is_leader(): return diff --git a/src/events/tls.py b/src/events/tls.py index 5a23850..bb4bd7d 100644 --- a/src/events/tls.py +++ b/src/events/tls.py @@ -217,13 +217,24 @@ def _enable_client_tls(self) -> None: def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: """Handle the `config-changed` event.""" - if self.charm.tls_manager.certificate_sans_require_update(): - if not self.charm.state.client_tls_relation: - self.charm.tls_manager.create_and_store_self_signed_certificate() - else: - self.charm.tls_events.refresh_tls_certificates_event.emit() - event.defer() - - # TODO rolling ops - self.charm.workload.restart(self.charm.workload.valkey_service) - self.charm.sentinel_manager.restart_service() + if ( + self.charm.state.unit_server.model.private_ip + and self.charm.state.bind_address != self.charm.state.unit_server.model.private_ip + ): + if self.charm.tls_manager.certificate_sans_require_update(): + if not self.charm.state.client_tls_relation: + self.charm.tls_manager.create_and_store_self_signed_certificate() + else: + self.charm.tls_events.refresh_tls_certificates_event.emit() + event.defer() + return + + self.charm.state.unit_server.update( + { + "hostname": self.charm.state.hostname, + "private_ip": self.charm.state.bind_address, + } + ) + # TODO rolling ops + self.charm.workload.restart(self.charm.workload.valkey_service) + self.charm.sentinel_manager.restart_service() diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index 90b1932..4302434 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -463,40 +463,11 @@ def test_config_changed_non_leader_unit(cloud_spec): config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) - with ( - patch("events.base_events.BaseEvents._update_internal_users_password") as mock_update, - ): + with patch("events.base_events.BaseEvents._update_internal_users_password") as mock_update: ctx.run(ctx.on.config_changed(), state_in) mock_update.assert_not_called() -def test_config_changed_leader_unit_valkey_update_fails(cloud_spec): - ctx = testing.Context(ValkeyCharm, app_trusted=True) - relation = testing.PeerRelation( - id=1, endpoint=PEER_RELATION, local_unit_data={"start-state": "started"} - ) - container = testing.Container(name=CONTAINER, can_connect=True) - - password_secret = testing.Secret( - tracked_content={user.value: "secure-password" for user in CharmUsers}, - remote_grants=APP_NAME, - ) - state_in = testing.State( - leader=True, - relations={relation}, - containers={container}, - secrets={password_secret}, - config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, - model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), - ) - with ( - patch("workload_k8s.ValkeyK8sWorkload.write_file"), - patch("core.models.RelationState.update") as mock_update, - ): - ctx.run(ctx.on.config_changed(), state_in) - mock_update.assert_called_once() - - def test_config_changed_leader_unit(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = testing.PeerRelation( @@ -565,6 +536,51 @@ def test_config_changed_leader_unit_wrong_username(cloud_spec): mock_set_acl_file.assert_not_called() +def test_config_changed_ip_change_no_tls_relation(cloud_spec): + ctx = testing.Context(ValkeyCharm, app_trusted=True) + relation = testing.PeerRelation( + id=1, + endpoint=PEER_RELATION, + local_unit_data={"start-state": "started", "private-ip": "127.0.1.1"}, + ) + container = testing.Container(name=CONTAINER, can_connect=True) + + password_secret = testing.Secret( + tracked_content={user.value: "secure-password" for user in CharmUsers}, + remote_grants=APP_NAME, + ) + state_in = testing.State( + leader=True, + relations={relation}, + containers={container}, + secrets={password_secret}, + config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + ) + with ( + patch("managers.config.ConfigManager.configure_services"), + patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="127.1.1.2"), + patch("managers.sentinel.SentinelManager.restart_service") as mock_restart_sentinel, + patch( + "workload_k8s.ValkeyK8sWorkload.exec", + return_value=("DNS:www.example.com, IP Address:127.1.1.1",), + ), + patch("workload_k8s.ValkeyK8sWorkload.restart") as mock_workload_restart, + patch("managers.tls.TLSManager.build_sans_ip", return_value=frozenset({"127.0.1.1"})), + patch( + "managers.tls.TLSManager.build_sans_dns", return_value=frozenset({"www.example.com"}) + ), + patch("events.base_events.BaseEvents._update_internal_users_password"), + patch( + "managers.tls.TLSManager.create_and_store_self_signed_certificate" + ) as mock_create_certificate, + ): + ctx.run(ctx.on.config_changed(), state_in) + mock_create_certificate.assert_called_once() + mock_restart_sentinel.assert_called_once() + mock_workload_restart.assert_called_once() + + def test_change_password_secret_changed_non_leader_unit(cloud_spec): ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = testing.PeerRelation( From d62ea9ba265f2bc34539e65306a3cf4296a2ed67 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Mar 2026 08:19:08 +0000 Subject: [PATCH 161/282] add network cut without ip change for vm --- tests/integration/ha/helpers/helpers.py | 142 +++++++++++++++++------ tests/integration/ha/test_network_cut.py | 30 +++-- tests/integration/helpers.py | 5 + 3 files changed, 131 insertions(+), 46 deletions(-) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index a4e7306..c33df81 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -24,53 +24,86 @@ logger = getLogger(__name__) -def cut_network_from_unit(juju: jubilant.Juju, substrate: Substrate, machine_name: str) -> None: +def lxd_cut_network_from_unit_with_ip_change(machine_name: str) -> None: + """Cut network from a lxc container in a way the changes the IP.""" + # apply a mask (device type `none`) + cut_network_command = f"lxc config device add {machine_name} eth0 none" + subprocess.check_call(cut_network_command.split()) + + +def lxd_cut_network_from_unit_without_ip_change(machine_name: str) -> None: + """Cut network from a lxc container (without causing the change of the unit IP address).""" + override_command = f"lxc config device override {machine_name} eth0" + try: + subprocess.check_call(override_command.split()) + except subprocess.CalledProcessError: + # Ignore if the interface was already overridden. + pass + + limit_set_command = f"lxc config device set {machine_name} eth0 limits.egress=0kbit" + subprocess.check_call(limit_set_command.split()) + limit_set_command = f"lxc config device set {machine_name} eth0 limits.ingress=1kbit" + subprocess.check_call(limit_set_command.split()) + limit_set_command = f"lxc config device set {machine_name} eth0 limits.priority=10" + subprocess.check_call(limit_set_command.split()) + + +def k8s_cut_network_from_unit_without_ip_change(machine_name: str) -> None: + """Cut network from a k8s pod without causing the change of the unit IP address.""" + # Apply a NetworkChaos file to use chaos-mesh to simulate a network cut. + with tempfile.NamedTemporaryFile(dir=".") as temp_file: + # Generates a manifest for chaosmesh to simulate network failure for a pod + with open( + "tests/integration/ha/helpers/chaos_network_loss.yml" + ) as chaos_network_loss_file: + logger.info( + f"Calling network loss on ns={juju.model} and pod={machine_name.replace('/', '-')}" + ) + template = string.Template(chaos_network_loss_file.read()) + chaos_network_loss = template.substitute( + namespace=juju.model, + pod=machine_name.replace("/", "-"), + ) + + temp_file.write(str.encode(chaos_network_loss)) + temp_file.flush() + + # Apply the generated manifest, chaosmesh would then make the pod inaccessible + env = os.environ + env["KUBECONFIG"] = os.path.expanduser("~/.kube/config") + try: + command_result = subprocess.check_output( + " ".join(["microk8s", "kubectl", "apply", "-f", temp_file.name]), + shell=True, + env=env, + stderr=subprocess.STDOUT, + ) + except subprocess.CalledProcessError as err: + logger.error( + f"Failed to apply network isolation: [{err.returncode}] {err.stderr=}, {err.stdout=}" + ) + raise + logger.info("Result of isolating unit from cluster is '%s'", command_result) + + +def cut_network_from_unit( + juju: jubilant.Juju, substrate: Substrate, machine_name: str, change_ip: bool = False +) -> None: """Cut network from a lxc container. Args: juju: Juju client substrate: The substrate the test is running on machine_name: lxc container hostname or k8s pod name + change_ip: Whether to change the IP address of the unit on the network cut (only applicable for VMs) """ if substrate == Substrate.VM: - # apply a mask (device type `none`) - cut_network_command = f"lxc config device add {machine_name} eth0 none" - subprocess.check_call(cut_network_command.split()) + if change_ip: + lxd_cut_network_from_unit_with_ip_change(machine_name) + else: + lxd_cut_network_from_unit_without_ip_change(machine_name) else: - # Apply a NetworkChaos file to use chaos-mesh to simulate a network cut. - with tempfile.NamedTemporaryFile(dir=".") as temp_file: - # Generates a manifest for chaosmesh to simulate network failure for a pod - with open( - "tests/integration/ha/helpers/chaos_network_loss.yml" - ) as chaos_network_loss_file: - logger.info( - f"Calling network loss on ns={juju.model} and pod={machine_name.replace('/', '-')}" - ) - template = string.Template(chaos_network_loss_file.read()) - chaos_network_loss = template.substitute( - namespace=juju.model, - pod=machine_name.replace("/", "-"), - ) - - temp_file.write(str.encode(chaos_network_loss)) - temp_file.flush() - - # Apply the generated manifest, chaosmesh would then make the pod inaccessible - env = os.environ - env["KUBECONFIG"] = os.path.expanduser("~/.kube/config") - try: - command_result = subprocess.check_output( - " ".join(["microk8s", "kubectl", "apply", "-f", temp_file.name]), - shell=True, - env=env, - stderr=subprocess.STDOUT, - ) - except subprocess.CalledProcessError as err: - logger.error( - f"Failed to apply network isolation: [{err.returncode}] {err.stderr=}, {err.stdout=}" - ) - raise - logger.info("Result of isolating unit from cluster is '%s'", command_result) + k8s_cut_network_from_unit_without_ip_change(machine_name) def restore_network_to_unit(juju: jubilant.Juju, substrate: Substrate, machine_name: str) -> None: @@ -294,3 +327,36 @@ def hostname_from_unit(juju: jubilant.Juju, unit_name: str) -> str: task_result = juju.exec(command="hostname", unit=unit_name) return task_result.stdout.strip() + + +def get_sans_from_certificate(certificate_path: str) -> dict[str, set[str]]: + """Get the SANs for a unit's cert.""" + sans_ip = set() + sans_dns = set() + if not ( + san_lines := subprocess.run( + [ + "openssl", + "x509", + "-ext", + "subjectAltName", + "-noout", + "-in", + certificate_path, + ], + capture_output=True, + text=True, + ).stdout.splitlines() + ): + return {"sans_ip": sans_ip, "sans_dns": sans_dns} + + for line in san_lines: + for sans in line.split(", "): + san_type, san_value = sans.split(":") + + if san_type.strip() == "DNS": + sans_dns.add(san_value) + if san_type.strip() == "IP Address": + sans_ip.add(san_value) + + return {"sans_ip": sans_ip, "sans_dns": sans_dns} diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 237fb03..ea20430 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -13,6 +13,7 @@ ) from tests.integration.ha.helpers.helpers import ( cut_network_from_unit, + get_sans_from_certificate, get_unit_name_from_primary_ip, hostname_from_unit, is_unit_reachable, @@ -27,6 +28,7 @@ are_apps_active_and_agents_idle, download_client_certificate_from_unit, get_cluster_hostnames, + get_ip_from_unit, get_number_connected_replicas, get_password, get_primary_ip, @@ -67,8 +69,10 @@ def test_build_and_deploy( @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) +@pytest.mark.parametrize("change_ip", [True, False], ids=["change_ip", "no_change_ip"]) async def test_network_cut_primary( # noqa: C901 tls_enabled: bool, + change_ip: bool, juju: jubilant.Juju, substrate: Substrate, chaos_mesh, @@ -80,6 +84,9 @@ async def test_network_cut_primary( # noqa: C901 if substrate == Substrate.K8S: pytest.skip("Tests on k8s is the same as no IP will change") download_client_certificate_from_unit(juju, APP_NAME) + if change_ip and substrate == Substrate.K8S: + pytest.skip("Changing IP is not applicable for k8s substrate.") + c_writes.tls_enabled = tls_enabled await c_writes.async_clear() c_writes.start() @@ -91,17 +98,16 @@ async def test_network_cut_primary( # noqa: C901 # Cut the network to the primary unit logger.info("Cutting network to primary unit at %s", primary_ip) primary_unit_name = get_unit_name_from_primary_ip(juju, primary_ip, substrate) - if tls_enabled: - logger.info( - "TLS is enabled, ensuring client certificates are downloaded before network cut." - ) - download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) + + download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) + primary_hostname = hostname_from_unit(juju, primary_unit_name) machine_name = primary_hostname if substrate == Substrate.K8S: primary_hostname = f"{primary_hostname}.{APP_NAME}-endpoints" + logger.info("Identified container name for primary unit: %s", primary_hostname) - cut_network_from_unit(juju, substrate, machine_name) + cut_network_from_unit(juju, substrate, machine_name, change_ip=change_ip) for unit in juju.status().apps[APP_NAME].units: if unit == primary_unit_name: @@ -168,8 +174,16 @@ async def test_network_cut_primary( # noqa: C901 f"Unit {unit} cannot reach the original primary unit {primary_hostname} after network restoration." ) - if tls_enabled: - download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) + download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) + # read ip from cert and check if is a different ip than before if change_ip is True + certificate_sans = get_sans_from_certificate("./client.pem") + if change_ip: + assert primary_ip not in certificate_sans["sans_ip"], ( + "The old IP should not be in SANs of client certificate after network cut and IP change." + ) + assert get_ip_from_unit(juju, primary_unit_name) in certificate_sans["sans_ip"], ( + "The new IP should be in SANs of client certificate after network cut and IP change." + ) hostnames = get_cluster_hostnames(juju, APP_NAME) # check replica number that it is back to NUM_UNITS - 1 diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 328e1b6..78841e6 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -714,3 +714,8 @@ def existing_app(juju: jubilant.Juju) -> str | None: return app_name return None + + +def get_ip_from_unit(juju: jubilant.Juju, unit_name: str) -> str: + """Get the IP address of a unit based on the substrate type.""" + return juju.exec("unit-get", "private-address", unit=unit_name).stdout.strip() From a931e7ca9b258b647a8f545d759736dbf57d638c Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Mar 2026 08:26:45 +0000 Subject: [PATCH 162/282] only remove APP_NAME in tests --- tests/integration/ha/test_scaling.py | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index 5574b83..5531fa6 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -354,11 +354,10 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_w def test_scale_down_remove_application(juju: jubilant.Juju) -> None: """Make sure the application can be removed.""" - app_name = existing_app(juju) or APP_NAME - juju.remove_application(app_name) + juju.remove_application(APP_NAME) juju.wait( - lambda status: app_name not in status.apps, + lambda status: APP_NAME not in status.apps, timeout=600, delay=5, ) From d0aeff68e3ecf90503ab2050d38e890502154354 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Mar 2026 08:30:16 +0000 Subject: [PATCH 163/282] minor feedback --- src/common/locks.py | 2 ++ tests/integration/ha/test_scaling.py | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/src/common/locks.py b/src/common/locks.py index b1593e8..02e87e8 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -248,6 +248,8 @@ def request_lock(self, timeout: int | None = None, primary_ip: str | None = None ) return True + return False + @property def is_held_by_this_unit(self) -> bool: """Check if the local unit holds the lock.""" diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index 5531fa6..4121e96 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -110,7 +110,7 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ app_name = existing_app(juju) or APP_NAME init_units_count = len(juju.status().apps[app_name].units) - if init_units_count < 1: + if init_units_count < NUM_UNITS: juju.add_unit(app_name, num_units=NUM_UNITS - init_units_count) init_units_count = NUM_UNITS juju.wait( From dacaaba3780fd3d815beb4ec453823b10d539caa Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Mar 2026 08:57:15 +0000 Subject: [PATCH 164/282] small refactor --- tests/integration/ha/helpers/helpers.py | 17 +++++++++-------- tests/integration/ha/test_network_cut.py | 4 ++-- 2 files changed, 11 insertions(+), 10 deletions(-) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index c33df81..3cec0fd 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -48,7 +48,7 @@ def lxd_cut_network_from_unit_without_ip_change(machine_name: str) -> None: subprocess.check_call(limit_set_command.split()) -def k8s_cut_network_from_unit_without_ip_change(machine_name: str) -> None: +def k8s_cut_network_from_unit_without_ip_change(model_name: str, machine_name: str) -> None: """Cut network from a k8s pod without causing the change of the unit IP address.""" # Apply a NetworkChaos file to use chaos-mesh to simulate a network cut. with tempfile.NamedTemporaryFile(dir=".") as temp_file: @@ -57,11 +57,11 @@ def k8s_cut_network_from_unit_without_ip_change(machine_name: str) -> None: "tests/integration/ha/helpers/chaos_network_loss.yml" ) as chaos_network_loss_file: logger.info( - f"Calling network loss on ns={juju.model} and pod={machine_name.replace('/', '-')}" + f"Calling network loss on ns={model_name} and pod={machine_name.replace('/', '-')}" ) template = string.Template(chaos_network_loss_file.read()) chaos_network_loss = template.substitute( - namespace=juju.model, + namespace=model_name, pod=machine_name.replace("/", "-"), ) @@ -87,13 +87,14 @@ def k8s_cut_network_from_unit_without_ip_change(machine_name: str) -> None: def cut_network_from_unit( - juju: jubilant.Juju, substrate: Substrate, machine_name: str, change_ip: bool = False + substrate: Substrate, model_name: str, machine_name: str, change_ip: bool = False ) -> None: """Cut network from a lxc container. Args: juju: Juju client substrate: The substrate the test is running on + model_name: The juju model name (only applicable for k8s) machine_name: lxc container hostname or k8s pod name change_ip: Whether to change the IP address of the unit on the network cut (only applicable for VMs) """ @@ -103,15 +104,15 @@ def cut_network_from_unit( else: lxd_cut_network_from_unit_without_ip_change(machine_name) else: - k8s_cut_network_from_unit_without_ip_change(machine_name) + k8s_cut_network_from_unit_without_ip_change(model_name, machine_name) -def restore_network_to_unit(juju: jubilant.Juju, substrate: Substrate, machine_name: str) -> None: +def restore_network_to_unit(substrate: Substrate, model_name: str, machine_name: str) -> None: """Restore network from a lxc container. Args: - juju: Juju client substrate: The substrate the test is running on + model_name: The juju model name (only applicable for k8s) machine_name: lxc container hostname or k8s pod name """ if substrate == Substrate.VM: @@ -122,7 +123,7 @@ def restore_network_to_unit(juju: jubilant.Juju, substrate: Substrate, machine_n env = os.environ env["KUBECONFIG"] = os.path.expanduser("~/.kube/config") subprocess.check_output( - f"microk8s kubectl -n {juju.model} delete networkchaos network-loss-primary", + f"microk8s kubectl -n {model_name} delete networkchaos network-loss-primary", shell=True, env=env, ) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index ea20430..047589a 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -107,7 +107,7 @@ async def test_network_cut_primary( # noqa: C901 primary_hostname = f"{primary_hostname}.{APP_NAME}-endpoints" logger.info("Identified container name for primary unit: %s", primary_hostname) - cut_network_from_unit(juju, substrate, machine_name, change_ip=change_ip) + cut_network_from_unit(substrate, juju.model, machine_name, change_ip=change_ip) for unit in juju.status().apps[APP_NAME].units: if unit == primary_unit_name: @@ -157,7 +157,7 @@ async def test_network_cut_primary( # noqa: C901 # restore network to the original primary unit logger.info("Restoring network to original primary unit at %s", primary_hostname) - restore_network_to_unit(juju, substrate, machine_name) + restore_network_to_unit(substrate, juju.model, machine_name) juju.wait( lambda status: are_apps_active_and_agents_idle( status, APP_NAME, unit_count=NUM_UNITS, idle_period=30 From a883967af9c19797f23ca8f0a6a9115ecfe9dc92 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Mar 2026 09:01:33 +0000 Subject: [PATCH 165/282] fix bug in config gen --- src/managers/config.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/managers/config.py b/src/managers/config.py index fb4b251..1b5960f 100644 --- a/src/managers/config.py +++ b/src/managers/config.py @@ -92,7 +92,7 @@ def get_config_properties(self, primary_endpoint: str) -> dict[str, str]: def _generate_replica_config(self, primary_endpoint: str) -> dict[str, str]: """Generate the config properties related to replica configuration based on the current cluster state.""" - local_unit_endpoint = self.state.unit_server.get_endpoint(self.state.substrate) + local_unit_endpoint = self.state.endpoint replica_config = { "primaryuser": CharmUsers.VALKEY_REPLICA.value, "primaryauth": self.state.cluster.internal_users_credentials.get( From 2a7839009d3e17aa67dfe841ab820d0461be5db9 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Mar 2026 09:15:22 +0000 Subject: [PATCH 166/282] run tls on k8s too --- tests/integration/ha/test_network_cut.py | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 047589a..580934c 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -80,13 +80,10 @@ async def test_network_cut_primary( # noqa: C901 c_writes_async_clean, ) -> None: """Cut the network to the primary unit and verify that a new primary is elected.""" - if tls_enabled: - if substrate == Substrate.K8S: - pytest.skip("Tests on k8s is the same as no IP will change") - download_client_certificate_from_unit(juju, APP_NAME) if change_ip and substrate == Substrate.K8S: pytest.skip("Changing IP is not applicable for k8s substrate.") + download_client_certificate_from_unit(juju, APP_NAME) c_writes.tls_enabled = tls_enabled await c_writes.async_clear() c_writes.start() From 1ca51a34d52aa9f25920636e2b5f0a380462ada1 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Mar 2026 09:29:17 +0000 Subject: [PATCH 167/282] add tls on for k8s --- tests/spread/k8s/test_network_cut_tls_off.py/task.yaml | 2 +- tests/spread/k8s/test_network_cut_tls_on.py/task.yaml | 7 +++++++ 2 files changed, 8 insertions(+), 1 deletion(-) create mode 100644 tests/spread/k8s/test_network_cut_tls_on.py/task.yaml diff --git a/tests/spread/k8s/test_network_cut_tls_off.py/task.yaml b/tests/spread/k8s/test_network_cut_tls_off.py/task.yaml index a5a67c2..38a1fb2 100644 --- a/tests/spread/k8s/test_network_cut_tls_off.py/task.yaml +++ b/tests/spread/k8s/test_network_cut_tls_off.py/task.yaml @@ -2,6 +2,6 @@ summary: test_network_cut.py environment: TEST_MODULE: ha/test_network_cut.py execute: | - tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate k8s --alluredir="$SPREAD_TASK/allure-results" + tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate k8s -k "tls_off" --alluredir="$SPREAD_TASK/allure-results" artifacts: - allure-results diff --git a/tests/spread/k8s/test_network_cut_tls_on.py/task.yaml b/tests/spread/k8s/test_network_cut_tls_on.py/task.yaml new file mode 100644 index 0000000..c21ff70 --- /dev/null +++ b/tests/spread/k8s/test_network_cut_tls_on.py/task.yaml @@ -0,0 +1,7 @@ +summary: test_network_cut.py +environment: + TEST_MODULE: ha/test_network_cut.py +execute: | + tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate k8s -k "tls_on" --alluredir="$SPREAD_TASK/allure-results" +artifacts: + - allure-results From 3fbf5c9b7c72f9decfd4a0b77d5fe87f819a9d71 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Mar 2026 09:41:29 +0000 Subject: [PATCH 168/282] remove skip on build and deploy --- tests/integration/ha/test_network_cut.py | 3 --- 1 file changed, 3 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 580934c..2d11bd4 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -44,9 +44,6 @@ def test_build_and_deploy( tls_enabled: bool, charm: str, juju: jubilant.Juju, substrate: Substrate ) -> None: """Build the charm-under-test and deploy it with three units.""" - if tls_enabled and substrate == Substrate.K8S: - pytest.skip("Tests on k8s is the same as no IP will change") - juju.deploy( charm, resources=IMAGE_RESOURCE if substrate == Substrate.K8S else None, From e61cf2c936f9cd90cf8cd71403aab43a2b12acbe Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Mar 2026 09:59:28 +0000 Subject: [PATCH 169/282] do not crash if deletion on key fails on valkey on cw clearing --- tests/integration/continuous_writes.py | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index 6b41573..b30c7da 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -165,7 +165,10 @@ def clear(self) -> SimpleNamespace | None: if not self._is_stopped: result = self.stop() - asyncio.run(self._async_delete()) + try: + asyncio.run(self._async_delete()) + except Exception as e: + logger.warning("Failed to clear continuous writes data from Valkey: %s", e) last_written_file = Path(self.LAST_WRITTEN_VAL_PATH) if last_written_file.exists(): @@ -179,7 +182,10 @@ async def async_clear(self) -> SimpleNamespace | None: if not self._is_stopped: result = await self.async_stop() - await self._async_delete() + try: + await self._async_delete() + except Exception as e: + logger.warning("Failed to clear continuous writes data from Valkey: %s", e) last_written_file = Path(self.LAST_WRITTEN_VAL_PATH) if last_written_file.exists(): From b9b961a421691a385639ae9843582549249cd093 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 18 Mar 2026 11:14:31 +0000 Subject: [PATCH 170/282] add rolling restart for ip change --- src/common/locks.py | 17 ++++++++ src/core/models.py | 2 + src/events/base_events.py | 82 ++++++++++++++++++++++++++++++++++++++- src/events/tls.py | 7 ++-- src/statuses.py | 12 ++++++ tests/unit/test_charm.py | 10 +++-- 6 files changed, 121 insertions(+), 9 deletions(-) diff --git a/src/common/locks.py b/src/common/locks.py index 1238efb..52721e2 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -174,6 +174,23 @@ def is_lock_free_to_give(self) -> bool: ) +class RestartLock(DataBagLock): + """Lock for restart operations.""" + + unit_request_lock_atr_name = "request_restart_lock" + member_with_lock_atr_name = "restart_member" + + @property + def is_lock_free_to_give(self) -> bool: + """Check if the unit with the restart lock has completed its operation.""" + restarting_unit = self.unit_with_lock + return ( + not self.state.cluster.model.restart_member + or not restarting_unit + or not restarting_unit.model.request_restart_lock + ) + + class ScaleDownLock(Lockable): """Lock for scale down operations. diff --git a/src/core/models.py b/src/core/models.py index 5c04f2c..12f959f 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -53,6 +53,7 @@ class PeerAppModel(PeerModel): charmed_sentinel_peers_password: InternalUsersSecret = Field(default="") charmed_sentinel_operator_password: InternalUsersSecret = Field(default="") start_member: str = Field(default="") + restart_member: str = Field(default="") internal_ca_certificate: InternalCertificatesSecret = Field(default="") internal_ca_private_key: InternalCertificatesSecret = Field(default="") @@ -65,6 +66,7 @@ class PeerUnitModel(PeerModel): hostname: str = Field(default="") private_ip: str = Field(default="") request_start_lock: bool = Field(default=False) + request_restart_lock: bool = Field(default=False) scale_down_state: str = Field(default="") tls_client_state: str = Field(default="") client_cert_ready: bool = Field(default=False) diff --git a/src/events/base_events.py b/src/events/base_events.py index 8642b07..45e0a01 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -19,7 +19,7 @@ ValkeyServicesFailedToStartError, ValkeyWorkloadCommandError, ) -from common.locks import ScaleDownLock, StartLock +from common.locks import RestartLock, ScaleDownLock, StartLock from literals import ( CLIENT_PORT, DATA_STORAGE, @@ -41,6 +41,29 @@ logger = logging.getLogger(__name__) +class RestartWorkloadEvent(ops.EventBase): + """Event for restarting the workload when certain events happen, e.g. IP change.""" + + def __init__( + self, handle: ops.Handle, restart_valkey: bool = True, restart_sentinel: bool = True + ): + super().__init__(handle) + self.restart_valkey = restart_valkey + self.restart_sentinel = restart_sentinel + + def snapshot(self) -> dict[str, str]: + """Save the state of the event.""" + return { + "restart_valkey": str(self.restart_valkey), + "restart_sentinel": str(self.restart_sentinel), + } + + def restore(self, snapshot: dict[str, str]) -> None: + """Restore the state of the event.""" + self.restart_valkey = snapshot.get("restart_valkey", "True") == "True" + self.restart_sentinel = snapshot.get("restart_sentinel", "True") == "True" + + class UnitFullyStarted(ops.EventBase): """Event that signals that the unit's has fully started. @@ -66,6 +89,7 @@ class BaseEvents(ops.Object): """Handle all base events.""" unit_fully_started = ops.EventSource(UnitFullyStarted) + restart_workload = ops.EventSource(RestartWorkloadEvent) def __init__(self, charm: "ValkeyCharm"): super().__init__(charm, key="base_events") @@ -81,6 +105,7 @@ def __init__(self, charm: "ValkeyCharm"): self.framework.observe(self.charm.on.config_changed, self._on_config_changed) self.framework.observe(self.charm.on.secret_changed, self._on_secret_changed) self.framework.observe(self.unit_fully_started, self._on_unit_fully_started) + self.framework.observe(self.restart_workload, self._on_restart_workload) self.framework.observe( self.charm.on[DATA_STORAGE].storage_detaching, self._on_storage_detaching ) @@ -230,7 +255,7 @@ def _on_peer_relation_changed(self, event: ops.RelationChangedEvent) -> None: if not self.charm.unit.is_leader(): return - for lock in [StartLock(self.charm.state)]: + for lock in [StartLock(self.charm.state), RestartLock(self.charm.state)]: lock.process() def _on_update_status(self, event: ops.UpdateStatusEvent) -> None: @@ -287,9 +312,11 @@ def _on_leader_elected(self, event: ops.LeaderElectedEvent) -> None: def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: """Handle the config_changed event.""" + # on k8s we use hostnames so we do not have to reconfigure on ip change if ( self.charm.state.unit_server.model.private_ip and self.charm.state.bind_address != self.charm.state.unit_server.model.private_ip + and self.charm.state.substrate == Substrate.VM ): self.charm.config_manager.configure_services( self.charm.sentinel_manager.get_primary_ip() @@ -525,3 +552,54 @@ def _set_state_for_going_away(self) -> None: ) self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY}) + + def _on_restart_workload(self, event: RestartWorkloadEvent) -> None: + """Handle the restart_workload event.""" + logger.info( + "Restarting workload Event. Restart Valkey: %s, Restart Sentinel: %s", + event.restart_valkey, + event.restart_sentinel, + ) + restart_lock = RestartLock(self.charm.state) + restart_lock.request_lock() + if not restart_lock.is_held_by_this_unit: + logger.info("Waiting for lock to restart workload") + event.defer() + return + + if event.restart_valkey: + self.charm.workload.restart(self.charm.workload.valkey_service) + if event.restart_sentinel: + self.charm.sentinel_manager.restart_service() + + if event.restart_valkey and not self.charm.cluster_manager.is_healthy( + check_replica_sync=False + ): + self.charm.status.set_running_status( + ClusterStatuses.VALKEY_UNHEALTHY_RESTART.value, + scope="unit", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + + self.charm.state.statuses.delete( + ClusterStatuses.VALKEY_UNHEALTHY_RESTART.value, + scope="unit", + component=self.charm.cluster_manager.name, + ) + + if event.restart_sentinel and not self.charm.sentinel_manager.is_healthy(): + self.charm.status.set_running_status( + ClusterStatuses.SENTINEL_UNHEALTHY_RESTART.value, + scope="unit", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + + self.charm.state.statuses.delete( + ClusterStatuses.SENTINEL_UNHEALTHY_RESTART.value, + scope="unit", + component=self.charm.cluster_manager.name, + ) + + restart_lock.release_lock() diff --git a/src/events/tls.py b/src/events/tls.py index 3dd65f4..e133941 100644 --- a/src/events/tls.py +++ b/src/events/tls.py @@ -24,6 +24,7 @@ CLIENT_PORT, CLIENT_TLS_RELATION_NAME, PEER_RELATION, + Substrate, TLSCARotationState, TLSState, ) @@ -320,9 +321,9 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: "private_ip": self.charm.state.bind_address, } ) - # TODO rolling ops - self.charm.workload.restart(self.charm.workload.valkey_service) - self.charm.sentinel_manager.restart_service() + # only restart on VM because on k8s the hostname is stable and does not change with IP changes + if self.charm.state.substrate == Substrate.VM: + self.charm.base_events.restart_workload.emit() def _orchestrate_ca_rotation(self) -> None: """Orchestrate the workflow when a TLS CA rotation has been initiated.""" diff --git a/src/statuses.py b/src/statuses.py index 66c7e87..3e6a2e8 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -34,6 +34,18 @@ class ClusterStatuses(Enum): running="async", ) + VALKEY_UNHEALTHY_RESTART = StatusObject( + status="maintenance", + message="Valkey unhealthy after restart", + running="async", + ) + + SENTINEL_UNHEALTHY_RESTART = StatusObject( + status="maintenance", + message="Sentinel unhealthy after restart", + running="async", + ) + class StartStatuses(Enum): """Collection of possible statuses related to the service start.""" diff --git a/tests/unit/test_charm.py b/tests/unit/test_charm.py index fc57087..44cf96e 100644 --- a/tests/unit/test_charm.py +++ b/tests/unit/test_charm.py @@ -538,7 +538,7 @@ def test_config_changed_leader_unit_wrong_username(cloud_spec): mock_set_acl_file.assert_not_called() -def test_config_changed_ip_change_no_tls_relation(cloud_spec): +def test_config_changed_ip_change_no_tls_relation(cloud_spec_vm): ctx = testing.Context(ValkeyCharm, app_trusted=True) relation = testing.PeerRelation( id=1, @@ -557,17 +557,17 @@ def test_config_changed_ip_change_no_tls_relation(cloud_spec): containers={container}, secrets={password_secret}, config={INTERNAL_USERS_PASSWORD_CONFIG: password_secret.id}, - model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), + model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec_vm), ) with ( patch("managers.config.ConfigManager.configure_services"), patch("managers.sentinel.SentinelManager.get_primary_ip", return_value="127.1.1.2"), patch("managers.sentinel.SentinelManager.restart_service") as mock_restart_sentinel, patch( - "workload_k8s.ValkeyK8sWorkload.exec", + "workload_vm.ValkeyVmWorkload.exec", return_value=("DNS:www.example.com, IP Address:127.1.1.1",), ), - patch("workload_k8s.ValkeyK8sWorkload.restart") as mock_workload_restart, + patch("workload_vm.ValkeyVmWorkload.restart") as mock_workload_restart, patch("managers.tls.TLSManager.build_sans_ip", return_value=frozenset({"127.0.1.1"})), patch( "managers.tls.TLSManager.build_sans_dns", return_value=frozenset({"www.example.com"}) @@ -576,6 +576,8 @@ def test_config_changed_ip_change_no_tls_relation(cloud_spec): patch( "managers.tls.TLSManager.create_and_store_self_signed_certificate" ) as mock_create_certificate, + patch("managers.cluster.ClusterManager.is_healthy", return_value=True), + patch("managers.sentinel.SentinelManager.is_healthy", return_value=True), ): ctx.run(ctx.on.config_changed(), state_in) mock_create_certificate.assert_called_once() From b3d25be5e84629afebd73ab9dfd7f5573b73f202 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Mar 2026 09:44:10 +0000 Subject: [PATCH 171/282] add kill primary db process test --- tests/integration/continuous_writes.py | 2 +- tests/integration/cw_helpers.py | 15 ++- tests/integration/ha/helpers/helpers.py | 31 +++++ tests/integration/ha/test_failover.py | 154 ++++++++++++++++++++++++ tests/integration/helpers.py | 6 +- 5 files changed, 203 insertions(+), 5 deletions(-) create mode 100644 tests/integration/ha/test_failover.py diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index b30c7da..ce75ad9 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -350,10 +350,10 @@ async def with_client(conf: SimpleNamespace): ): raise WriteFailedError("LPUSH returned 0/None") proc_logger.info("Length after write: %s", res) - await asyncio.sleep(in_between_sleep) except Exception as e: proc_logger.warning("Write failed at %s: %s", current_val, e) finally: + await asyncio.sleep(in_between_sleep) if event.is_set(): break diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index be32214..e03d02e 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -70,6 +70,7 @@ def assert_continuous_writes_consistent( hostnames: list[str], username: str, password: str, + ignore_count: bool = False, ) -> None: """Assert that the continuous writes are consistent.""" last_written_value = None @@ -81,10 +82,18 @@ def assert_continuous_writes_consistent( for endpoint in hostnames: last_value = int(exec_valkey_cli(endpoint, username, password, f"LRANGE {KEY} 0 0").stdout) count = int(exec_valkey_cli(endpoint, username, password, f"LLEN {KEY}").stdout) + logger.info( + "Endpoint: %s, last written value: %s, last value in DB: %s, count in DB: %s", + endpoint, + last_written_value, + last_value, + count, + ) assert last_written_value == last_value, ( f"endpoint: {endpoint}, expected value: {last_written_value}, current value: {last_value}" ) - assert count == last_written_value + 1, ( - f"endpoint: {endpoint}, expected count: {last_written_value + 1}, current count: {count}" - ) + if not ignore_count: + assert count == last_written_value + 1, ( + f"endpoint: {endpoint}, expected count: {last_written_value + 1}, current count: {count}" + ) logger.info("Continuous writes are consistent on %s.", endpoint) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index 3cec0fd..1ef13c9 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -361,3 +361,34 @@ def get_sans_from_certificate(certificate_path: str) -> dict[str, set[str]]: sans_ip.add(san_value) return {"sans_ip": sans_ip, "sans_dns": sans_dns} + + +def send_process_control_signal( + unit_name: str, + model_full_name: str, + signal: str, + db_process: str, + substrate: Substrate, +) -> None: + """Send control signal to a database process running on a Juju unit. + + Args: + unit_name: the Juju unit running the process + model_full_name: the Juju model for the unit + signal: the signal to issue, e.g `SIGKILL` + db_process: the path to the database process binary + substrate: the substrate the test is running on + """ + if substrate == Substrate.K8S: + # For k8s, we exec into the pod and send the signal to the process + command = f"JUJU_MODEL={model_full_name} juju ssh --container valkey {unit_name} pkill --signal {signal} {db_process}" + else: + command = f"JUJU_MODEL={model_full_name} juju ssh {unit_name} sudo -i 'pkill --signal {signal} -f {db_process}'" + + try: + subprocess.check_output( + command, stderr=subprocess.PIPE, shell=True, universal_newlines=True, timeout=3 + ) + except (subprocess.CalledProcessError, subprocess.TimeoutExpired): + pass + logger.info(f"Signal {signal} sent to database process on unit {unit_name}.") diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py new file mode 100644 index 0000000..38e6a3e --- /dev/null +++ b/tests/integration/ha/test_failover.py @@ -0,0 +1,154 @@ +#!/usr/bin/env python3 +# Copyright 2025 Canonical Ltd. +# See LICENSE file for licensing details. + +import logging +import time + +import jubilant +import pytest +from jubilant import Juju + +from literals import CharmUsers, Substrate +from tests.integration.cw_helpers import ( + assert_continuous_writes_consistent, + assert_continuous_writes_increasing, +) +from tests.integration.ha.helpers.helpers import ( + get_unit_name_from_primary_ip, + send_process_control_signal, +) + +from ..helpers import ( + APP_NAME, + IMAGE_RESOURCE, + TLS_CHANNEL, + TLS_NAME, + are_apps_active_and_agents_idle, + existing_app, + get_cluster_hostnames, + get_number_connected_replicas, + get_password, + get_primary_ip, + ping, +) + +logger = logging.getLogger(__name__) + +NUM_UNITS = 3 +RESTART_DELAY_DEFAULT = 20 +RESTART_DELAY_PATCHED = 120 +FAILOVER_DELAY = 45 +TEST_KEY = "test_key" +TEST_VALUE = "42" +VM_PROCESS_PATTERN = "/usr/bin/valkey-server" +K8S_PROCESS_PATTERN = "valkey-server" + + +@pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) +def test_build_and_deploy( + tls_enabled: bool, charm: str, juju: jubilant.Juju, substrate: Substrate +) -> None: + """Build the charm-under-test and deploy it with three units.""" + if app := existing_app(juju): + logger.info(f"App {app} already exists, skipping deploy.") + return + + juju.deploy( + charm, + resources=IMAGE_RESOURCE if substrate == Substrate.K8S else None, + num_units=NUM_UNITS, + trust=True, + ) + + if tls_enabled: + juju.deploy(TLS_NAME, channel=TLS_CHANNEL) + juju.integrate(f"{APP_NAME}:client-certificates", TLS_NAME) + + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), + timeout=600, + ) + + assert len(juju.status().apps[APP_NAME].units) == NUM_UNITS, ( + f"Unexpected number of units after initial deploy: expected {NUM_UNITS}, got {len(juju.status().apps[APP_NAME].units)}" + ) + + +async def test_kill_db_process_on_primary( + juju: Juju, substrate: Substrate, c_writes, c_writes_async_clean +) -> None: + """Make sure the cluster can self-heal when the leader goes down.""" + app_name = existing_app(juju) or APP_NAME + + # make sure we have at least two units so we can stop one of them + init_units_count = len(juju.status().get_units(app_name)) + if init_units_count < 2: + juju.add_unit(app_name, num_units=2 - init_units_count) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, app_name, idle_period=10, unit_count=2 + ), + timeout=1200, + ) + + init_units_count = len(juju.status().get_units(app_name)) + c_writes.start() + time.sleep(10) + + primary_ip = get_primary_ip(juju, app_name) + assert primary_ip, "Failed to get primary endpoint from Juju status." + + # Cut the network to the primary unit + logger.info("Axing away primary unit at %s", primary_ip) + primary_unit_name = get_unit_name_from_primary_ip(juju, primary_ip, substrate) + + db_process_name = K8S_PROCESS_PATTERN if substrate == Substrate.K8S else VM_PROCESS_PATTERN + + # axe away the database process of the primary + send_process_control_signal( + unit_name=primary_unit_name, + model_full_name=juju.model, + signal="SIGKILL", + db_process=db_process_name, + substrate=substrate, + ) + # We have 20s before systemd restarts the process + # make sure the process is stopped + logger.info("Pinging primary unit to ensure it's down.") + admin_password = get_password(juju, CharmUsers.VALKEY_ADMIN) + assert not ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + "Primary unit is still responding after SIGKILL." + ) + + # ensure the stopped unit was restarted + logger.info("Waiting for primary unit to restart.") + time.sleep(RESTART_DELAY_DEFAULT) + assert ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + "Primary unit is not responding after restart delay." + ) + logger.info("Primary unit is available again.") + + logger.info("Checking number of connected replicas after primary restart.") + hostnames = get_cluster_hostnames(juju, app_name) + number_of_replicas = await get_number_connected_replicas( + hostnames, CharmUsers.VALKEY_ADMIN, admin_password + ) + assert number_of_replicas == init_units_count - 1, ( + f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" + ) + + # ensure data is written in the cluster + logger.info("Checking continuous writes are increasing after primary restart.") + await assert_continuous_writes_increasing( + hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password + ) + + await c_writes.async_stop() + + assert_continuous_writes_consistent( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN, + password=admin_password, + ignore_count=True, # we ignore count here as we know we will miss writes during primary down + ) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 0c6dea7..163799a 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -558,7 +558,11 @@ def ping( Returns: True if the node responds to a ping, False otherwise. """ - return exec_valkey_cli(hostname, username, password, "ping").stdout == "PONG" + try: + return exec_valkey_cli(hostname, username, password, "ping").stdout == "PONG" + except (subprocess.CalledProcessError, subprocess.TimeoutExpired) as e: + logger.warning(f"Error executing Valkey CLI ping on {hostname}: {e}") + return False async def ping_cluster( From c2f817cedb6117e61a3b9cc544d4b0e0544939bc Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Mar 2026 09:57:27 +0000 Subject: [PATCH 172/282] fix test for k8s --- tests/integration/ha/test_failover.py | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index 38e6a3e..b09105f 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -36,8 +36,9 @@ logger = logging.getLogger(__name__) NUM_UNITS = 3 -RESTART_DELAY_DEFAULT = 20 -RESTART_DELAY_PATCHED = 120 +VM_RESTART_DELAY_DEFAULT = 20 +K8S_RESTART_DELAY_DEFAULT = 5 +VM_RESTART_DELAY_PATCHED = 120 FAILOVER_DELAY = 45 TEST_KEY = "test_key" TEST_VALUE = "42" @@ -115,15 +116,19 @@ async def test_kill_db_process_on_primary( ) # We have 20s before systemd restarts the process # make sure the process is stopped - logger.info("Pinging primary unit to ensure it's down.") admin_password = get_password(juju, CharmUsers.VALKEY_ADMIN) - assert not ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( - "Primary unit is still responding after SIGKILL." - ) + if substrate == Substrate.VM: + # K8s restarts much faster so pinging to check will be very flakey + logger.info("Pinging primary unit to ensure it's down.") + assert not ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + "Primary unit is still responding after SIGKILL." + ) # ensure the stopped unit was restarted logger.info("Waiting for primary unit to restart.") - time.sleep(RESTART_DELAY_DEFAULT) + time.sleep( + VM_RESTART_DELAY_DEFAULT if substrate == Substrate.VM else K8S_RESTART_DELAY_DEFAULT + ) assert ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( "Primary unit is not responding after restart delay." ) From 512c73dfa4e039bb04059d044c77e5398ba2594e Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Mar 2026 10:49:53 +0000 Subject: [PATCH 173/282] optimize lock and start procedure --- src/common/locks.py | 16 ++++++++-------- src/events/base_events.py | 16 ++++++++-------- 2 files changed, 16 insertions(+), 16 deletions(-) diff --git a/src/common/locks.py b/src/common/locks.py index 52721e2..14229e2 100644 --- a/src/common/locks.py +++ b/src/common/locks.py @@ -75,9 +75,10 @@ def units_requesting_lock(self) -> list[str]: @property def next_unit_to_give_lock(self) -> str | None: """Get the next unit to give the start lock to.""" + units_requesting_lock = self.units_requesting_lock if self.state.unit_server.model[self.unit_request_lock_atr_name]: return self.state.unit_server.unit_name - return self.units_requesting_lock[0] if self.units_requesting_lock else None + return units_requesting_lock[0] if units_requesting_lock else None @property def unit_with_lock(self) -> "ValkeyServer | None": @@ -165,10 +166,11 @@ class StartLock(DataBagLock): @property def is_lock_free_to_give(self) -> bool: """Check if the unit with the start lock has completed its operation.""" + if not self.state.cluster.model.start_member: + return True starting_unit = self.unit_with_lock return ( - not self.state.cluster.model.start_member - or not starting_unit + not starting_unit or starting_unit.is_started or not starting_unit.model.request_start_lock ) @@ -183,12 +185,10 @@ class RestartLock(DataBagLock): @property def is_lock_free_to_give(self) -> bool: """Check if the unit with the restart lock has completed its operation.""" + if not self.state.cluster.model.restart_member: + return True restarting_unit = self.unit_with_lock - return ( - not self.state.cluster.model.restart_member - or not restarting_unit - or not restarting_unit.model.request_restart_lock - ) + return not restarting_unit or not restarting_unit.model.request_restart_lock class ScaleDownLock(Lockable): diff --git a/src/events/base_events.py b/src/events/base_events.py index 45e0a01..b93e9cc 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -152,13 +152,6 @@ def _on_start(self, event: ops.StartEvent) -> None: event.defer() return - self.charm.state.unit_server.update({"start_state": StartState.WAITING_TO_START.value}) - start_lock.request_lock() - - if not start_lock.is_held_by_this_unit: - logger.info("Waiting for lock to start") - event.defer() - return try: primary_endpoint = self.charm.sentinel_manager.get_primary_ip() except ValkeyCannotGetPrimaryIPError: @@ -173,10 +166,17 @@ def _on_start(self, event: ops.StartEvent) -> None: self.charm.state.unit_server.update( {"start_state": StartState.WAITING_FOR_PRIMARY_START.value} ) - start_lock.release_lock() event.defer() return + self.charm.state.unit_server.update({"start_state": StartState.WAITING_TO_START.value}) + start_lock.request_lock() + + if not start_lock.is_held_by_this_unit: + logger.info("Waiting for lock to start") + event.defer() + return + try: self.charm.config_manager.configure_services(primary_endpoint) self.charm.workload.start() From 54468c9af42132639c80dda3c133e981886b20b1 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Mar 2026 11:17:26 +0000 Subject: [PATCH 174/282] add freeze db test --- tests/integration/ha/test_failover.py | 124 +++++++++++++++++++++++++- 1 file changed, 121 insertions(+), 3 deletions(-) diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index b09105f..1dd1ded 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -2,12 +2,13 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. +import asyncio import logging -import time import jubilant import pytest from jubilant import Juju +from tenacity import Retrying, stop_after_attempt, wait_fixed from literals import CharmUsers, Substrate from tests.integration.cw_helpers import ( @@ -25,6 +26,7 @@ TLS_CHANNEL, TLS_NAME, are_apps_active_and_agents_idle, + exec_valkey_cli, existing_app, get_cluster_hostnames, get_number_connected_replicas, @@ -95,7 +97,7 @@ async def test_kill_db_process_on_primary( init_units_count = len(juju.status().get_units(app_name)) c_writes.start() - time.sleep(10) + await asyncio.sleep(10) primary_ip = get_primary_ip(juju, app_name) assert primary_ip, "Failed to get primary endpoint from Juju status." @@ -126,7 +128,7 @@ async def test_kill_db_process_on_primary( # ensure the stopped unit was restarted logger.info("Waiting for primary unit to restart.") - time.sleep( + await asyncio.sleep( VM_RESTART_DELAY_DEFAULT if substrate == Substrate.VM else K8S_RESTART_DELAY_DEFAULT ) assert ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( @@ -157,3 +159,119 @@ async def test_kill_db_process_on_primary( password=admin_password, ignore_count=True, # we ignore count here as we know we will miss writes during primary down ) + + +async def test_freeze_db_process_on_primary( + juju: Juju, substrate: Substrate, c_writes, c_writes_async_clean +) -> None: + """Make sure the cluster can self-heal when the leader goes down.""" + app_name = existing_app(juju) or APP_NAME + hostnames = get_cluster_hostnames(juju, app_name) + + # make sure we have at least two units so we can stop one of them + init_units_count = len(juju.status().get_units(app_name)) + if init_units_count < 2: + juju.add_unit(app_name, num_units=2 - init_units_count) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, app_name, idle_period=10, unit_count=2 + ), + timeout=1200, + ) + + init_units_count = len(juju.status().get_units(app_name)) + c_writes.start() + await asyncio.sleep(10) + + primary_ip = get_primary_ip(juju, app_name) + assert primary_ip, "Failed to get primary endpoint from Juju status." + + # Cut the network to the primary unit + logger.info("Axing away primary unit at %s", primary_ip) + primary_unit_name = get_unit_name_from_primary_ip(juju, primary_ip, substrate) + + db_process_name = K8S_PROCESS_PATTERN if substrate == Substrate.K8S else VM_PROCESS_PATTERN + + # axe away the database process of the primary + send_process_control_signal( + unit_name=primary_unit_name, + model_full_name=juju.model, + signal="SIGSTOP", + db_process=db_process_name, + substrate=substrate, + ) + # make sure the process is stopped + logger.info("Pinging primary unit to ensure it's down.") + admin_password = get_password(juju, CharmUsers.VALKEY_ADMIN) + assert not ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + "Primary unit is still responding after SIGSTOP." + ) + + # ensure the stopped unit was restarted + logger.info("Waiting for failover to happen.") + await asyncio.sleep(FAILOVER_DELAY) + + new_primary_ip = get_primary_ip(juju, app_name) + assert new_primary_ip != primary_ip, "Primary IP did not change after failover delay." + logger.info("Failover successful, new primary is at %s", new_primary_ip) + + number_of_replicas = await get_number_connected_replicas( + hostnames, CharmUsers.VALKEY_ADMIN, admin_password + ) + assert number_of_replicas == init_units_count - 2, ( + f"Expected {init_units_count - 2} replicas to be connected, got {number_of_replicas}" + ) + + await assert_continuous_writes_increasing( + hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password + ) + + send_process_control_signal( + unit_name=primary_unit_name, + model_full_name=juju.model, + signal="SIGCONT", + db_process=db_process_name, + substrate=substrate, + ) + + # give time to the unit to start and sync with the other units + # it will detect a failover happened and switch to be a replica + for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(5)): + with attempt: + if ( + "role:master" + in exec_valkey_cli( + primary_ip, CharmUsers.VALKEY_ADMIN, admin_password, "info replication" + ).stdout + ): + logger.warning( + "Unit is still primary after SIGCONT, waiting for unit to pick up on failover..." + ) + raise Exception("Unit is still primary after SIGCONT.") + assert ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + "Old primary unit is not responding after SIGCONT." + ) + logger.info("Old primary unit is available again.") + + logger.info("Checking number of connected replicas after primary restart.") + number_of_replicas = await get_number_connected_replicas( + hostnames, CharmUsers.VALKEY_ADMIN, admin_password + ) + assert number_of_replicas == init_units_count - 1, ( + f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" + ) + + # ensure data is written in the cluster + logger.info("Checking continuous writes are increasing after primary restart.") + await assert_continuous_writes_increasing( + hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password + ) + + await c_writes.async_stop() + + assert_continuous_writes_consistent( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN, + password=admin_password, + ignore_count=True, # we ignore count here as we know we will miss writes during primary down + ) From 3ea19b363fc6174229d521e88eb56c3c4799243f Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Mar 2026 14:45:53 +0000 Subject: [PATCH 175/282] add full cluster restart test --- tests/integration/ha/helpers/helpers.py | 185 +++++++++++++++++++++++- tests/integration/ha/test_failover.py | 108 +++++++++++++- 2 files changed, 286 insertions(+), 7 deletions(-) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index 1ef13c9..7664046 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -7,8 +7,10 @@ import os import string import subprocess +import tarfile import tempfile import time +from datetime import datetime from logging import getLogger import jubilant @@ -16,13 +18,18 @@ import urllib3 from kubernetes import client, config from kubernetes.client.rest import ApiException -from tenacity import RetryError, Retrying, stop_after_attempt, wait_fixed +from tenacity import RetryError, Retrying, stop_after_attempt, stop_after_delay, wait_fixed from literals import Substrate from tests.integration.helpers import APP_NAME logger = getLogger(__name__) +VALKEY_SNAP_SERVICE_NAME = "snap.charmed-valkey.server.service" +VM_RESTART_DELAY_DEFAULT = 20 +K8S_RESTART_DELAY_DEFAULT = 5 +RESTART_DELAY_PATCHED = 120 + def lxd_cut_network_from_unit_with_ip_change(machine_name: str) -> None: """Cut network from a lxc container in a way the changes the IP.""" @@ -392,3 +399,179 @@ def send_process_control_signal( except (subprocess.CalledProcessError, subprocess.TimeoutExpired): pass logger.info(f"Signal {signal} sent to database process on unit {unit_name}.") + + +def lxd_patch_restart_delay(juju: jubilant.Juju, unit_name: str, delay: int | None = None) -> None: + """Update the restart delay in the snap's systemd service file.""" + delay = delay or VM_RESTART_DELAY_DEFAULT + juju.exec( + command=f"sed -i 's/^RestartSec=.*/RestartSec={delay}s/' /etc/systemd/system/{VALKEY_SNAP_SERVICE_NAME}", + unit=unit_name, + ) + + # reload the daemon for systemd to reflect changes + juju.exec(command="sudo systemctl daemon-reload", unit=unit_name) + + +EXTEND_PEBBLE_RESTART_DELAY_YAML = """services: + valkey: + override: merge + backoff-delay: {delay}s + backoff-limit: {delay}s +""" + +RESTORE_PEBBLE_RESTART_DELAY_YAML = """services: + valkey: + override: merge + backoff-delay: 500ms + backoff-limit: 30s +""" + + +def pebble_patch_restart_delay( + juju: jubilant.Juju, + unit_name: str, + delay: int | None = None, + ensure_replan: bool = False, +) -> None: + """Modify the pebble restart delay of the underlying process. + + Args: + juju: An instance of Jubilant's Juju class on which to run Juju commands + unit_name: The name of unit to extend the pebble restart delay for + delay: The new restart delay to apply + ensure_replan: Whether to check that the replan command succeeded + """ + pebble_file_content = ( + EXTEND_PEBBLE_RESTART_DELAY_YAML.format(delay=delay) + if delay + else RESTORE_PEBBLE_RESTART_DELAY_YAML + ) + kubernetes.config.load_kube_config() + client = kubernetes.client.api.core_v1_api.CoreV1Api() + + pod_name = unit_name.replace("/", "-") + container_name = "valkey" + service_name = "valkey" + now = datetime.now().isoformat() + + with tempfile.NamedTemporaryFile() as pebble_plan_file: + pebble_plan_file.write(str.encode(pebble_file_content)) + pebble_plan_file.flush() + + copy_file_into_pod( + client, + juju.model, + pod_name, + container_name, + pebble_plan_file.name, + f"/tmp/pebble_plan_{now}.yml", + ) + + add_to_pebble_layer_commands = ( + f"/charm/bin/pebble add --combine {service_name} /tmp/pebble_plan_{now}.yml" + ) + response = kubernetes.stream.stream( + client.connect_get_namespaced_pod_exec, + pod_name, + juju.model, + container=container_name, + command=add_to_pebble_layer_commands.split(), + stdin=False, + stdout=True, + stderr=True, + tty=False, + _preload_content=False, + ) + response.run_forever(timeout=5) + assert response.returncode == 0, ( + f"Failed to add to pebble layer, unit={unit_name}, container={container_name}, service={service_name}" + ) + + for attempt in Retrying(stop=stop_after_delay(60), wait=wait_fixed(3)): + with attempt: + replan_pebble_layer_commands = "/charm/bin/pebble replan" + response = kubernetes.stream.stream( + client.connect_get_namespaced_pod_exec, + pod_name, + juju.model, + container=container_name, + command=replan_pebble_layer_commands.split(), + stdin=False, + stdout=True, + stderr=True, + tty=False, + _preload_content=False, + ) + response.run_forever(timeout=60) + if ensure_replan: + assert response.returncode == 0, ( + f"Failed to replan pebble layer, unit={unit_name}, container={container_name}, service={service_name}" + ) + + +def copy_file_into_pod( + client: kubernetes.client.api.core_v1_api.CoreV1Api, + namespace: str, + pod_name: str, + container_name: str, + source_path: str, + destination_path: str, +) -> None: + """Copy file contents into pod. + + Args: + client: The kubernetes CoreV1Api client + namespace: The namespace of the pod to copy files to + pod_name: The name of the pod to copy files to + container_name: The name of the pod container to copy files to + source_path: The path of the file to copy from the local machine + destination_path: The path to copy the file to in the pod + """ + try: + exec_command = ["tar", "xvf", "-", "-C", "/"] + + api_response = kubernetes.stream.stream( + client.connect_get_namespaced_pod_exec, + pod_name, + namespace, + container=container_name, + command=exec_command, + stdin=True, + stdout=True, + stderr=True, + tty=False, + _preload_content=False, + ) + + with tempfile.TemporaryFile() as tar_buffer: + with tarfile.open(fileobj=tar_buffer, mode="w") as tar: + tar.add(source_path, destination_path) + + tar_buffer.seek(0) + commands = [] + commands.append(tar_buffer.read()) + + while api_response.is_open(): + api_response.update(timeout=1) + + if commands: + command = commands.pop(0) + api_response.write_stdin(command.decode()) + else: + break + + api_response.close() + except kubernetes.client.rest.ApiException: + assert False + + +def patch_restart_delay( + juju: jubilant.Juju, unit_name: str, delay: int | None, substrate: Substrate +) -> None: + """Update the restart delay for the database process based on the substrate.""" + match substrate: + case Substrate.VM: + lxd_patch_restart_delay(juju, unit_name, delay) + case Substrate.K8S: + pebble_patch_restart_delay(juju, unit_name, delay=delay, ensure_replan=True) diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index 1dd1ded..2374b51 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -7,7 +7,6 @@ import jubilant import pytest -from jubilant import Juju from tenacity import Retrying, stop_after_attempt, wait_fixed from literals import CharmUsers, Substrate @@ -16,7 +15,11 @@ assert_continuous_writes_increasing, ) from tests.integration.ha.helpers.helpers import ( + K8S_RESTART_DELAY_DEFAULT, + RESTART_DELAY_PATCHED, + VM_RESTART_DELAY_DEFAULT, get_unit_name_from_primary_ip, + patch_restart_delay, send_process_control_signal, ) @@ -38,9 +41,6 @@ logger = logging.getLogger(__name__) NUM_UNITS = 3 -VM_RESTART_DELAY_DEFAULT = 20 -K8S_RESTART_DELAY_DEFAULT = 5 -VM_RESTART_DELAY_PATCHED = 120 FAILOVER_DELAY = 45 TEST_KEY = "test_key" TEST_VALUE = "42" @@ -79,7 +79,7 @@ def test_build_and_deploy( async def test_kill_db_process_on_primary( - juju: Juju, substrate: Substrate, c_writes, c_writes_async_clean + juju: jubilant.Juju, substrate: Substrate, c_writes, c_writes_async_clean ) -> None: """Make sure the cluster can self-heal when the leader goes down.""" app_name = existing_app(juju) or APP_NAME @@ -162,7 +162,7 @@ async def test_kill_db_process_on_primary( async def test_freeze_db_process_on_primary( - juju: Juju, substrate: Substrate, c_writes, c_writes_async_clean + juju: jubilant.Juju, substrate: Substrate, c_writes, c_writes_async_clean ) -> None: """Make sure the cluster can self-heal when the leader goes down.""" app_name = existing_app(juju) or APP_NAME @@ -275,3 +275,99 @@ async def test_freeze_db_process_on_primary( password=admin_password, ignore_count=True, # we ignore count here as we know we will miss writes during primary down ) + + +async def test_full_cluster_restart( + juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate +) -> None: + """Make sure the cluster can self-heal after all members went down.""" + app_name = existing_app(juju) or APP_NAME + + # make sure we have at least two units so we can stop one of them + init_units_count = len(juju.status().get_units(app_name)) + if init_units_count < 2: + juju.add_unit(app_name, num_units=2 - init_units_count) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, app_name, idle_period=10, unit_count=2 + ), + timeout=1200, + ) + + init_units_count = len(juju.status().get_units(app_name)) + c_writes.start() + await asyncio.sleep(10) + + # update the restart delay for all units + for unit in juju.status().get_units(app_name): + patch_restart_delay( + juju, + unit_name=unit, + delay=RESTART_DELAY_PATCHED, + substrate=substrate, + ) + + db_process_name = K8S_PROCESS_PATTERN if substrate == Substrate.K8S else VM_PROCESS_PATTERN + for unit in juju.status().get_units(app_name): + send_process_control_signal( + unit_name=unit, + model_full_name=juju.model, + signal="SIGTERM", + db_process=db_process_name, + substrate=substrate, + ) + + # make sure the process is stopped + admin_password = get_password(juju, CharmUsers.VALKEY_ADMIN) + for unit, unit_info in juju.status().get_units(app_name).items(): + unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address + logger.info("Pinging %s to ensure it's down.", unit) + assert not ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + f"{unit} still responding after SIGTERM." + ) + + # ensure the stopped unit was restarted + logger.info("Waiting for units to restart.") + await asyncio.sleep(RESTART_DELAY_PATCHED + 10) + + for unit, unit_info in juju.status().get_units(app_name).items(): + unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address + logger.info("Pinging %s to ensure it's up.", unit) + assert ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + f"{unit} is not responding after restart delay." + ) + + logger.info("All units are available again.") + + logger.info("Checking number of connected replicas after primary restart.") + hostnames = get_cluster_hostnames(juju, app_name) + number_of_replicas = await get_number_connected_replicas( + hostnames, CharmUsers.VALKEY_ADMIN, admin_password + ) + assert number_of_replicas == init_units_count - 1, ( + f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" + ) + + # ensure data is written in the cluster + logger.info("Checking continuous writes are increasing after primary restart.") + await assert_continuous_writes_increasing( + hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password + ) + + await c_writes.async_stop() + + assert_continuous_writes_consistent( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN, + password=admin_password, + ignore_count=True, # we ignore count here as we know we will miss writes during primary down + ) + + # reset the restart delay to the original value + for unit in juju.status().get_units(app_name): + patch_restart_delay( + juju, + unit_name=unit, + delay=None, + substrate=substrate, + ) From af3197a1db52e0c7869b192f98e3e8695968c4dd Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Mar 2026 15:18:14 +0000 Subject: [PATCH 176/282] full cluster crash --- tests/integration/ha/test_failover.py | 96 +++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index 2374b51..854e7e3 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -371,3 +371,99 @@ async def test_full_cluster_restart( delay=None, substrate=substrate, ) + + +async def test_full_cluster_crash( + juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate +) -> None: + """Make sure the cluster can self-heal after all members went down.""" + app_name = existing_app(juju) or APP_NAME + + # make sure we have at least two units so we can stop one of them + init_units_count = len(juju.status().get_units(app_name)) + if init_units_count < 2: + juju.add_unit(app_name, num_units=2 - init_units_count) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, app_name, idle_period=10, unit_count=2 + ), + timeout=1200, + ) + + init_units_count = len(juju.status().get_units(app_name)) + c_writes.start() + await asyncio.sleep(10) + + # update the restart delay for all units + for unit in juju.status().get_units(app_name): + patch_restart_delay( + juju, + unit_name=unit, + delay=RESTART_DELAY_PATCHED, + substrate=substrate, + ) + + db_process_name = K8S_PROCESS_PATTERN if substrate == Substrate.K8S else VM_PROCESS_PATTERN + for unit in juju.status().get_units(app_name): + send_process_control_signal( + unit_name=unit, + model_full_name=juju.model, + signal="SIGKILL", + db_process=db_process_name, + substrate=substrate, + ) + + # make sure the process is stopped + admin_password = get_password(juju, CharmUsers.VALKEY_ADMIN) + for unit, unit_info in juju.status().get_units(app_name).items(): + unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address + logger.info("Pinging %s to ensure it's down.", unit) + assert not ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + f"{unit} still responding after SIGKILL." + ) + + # ensure the stopped unit was restarted + logger.info("Waiting for units to restart.") + await asyncio.sleep(RESTART_DELAY_PATCHED + 10) + + for unit, unit_info in juju.status().get_units(app_name).items(): + unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address + logger.info("Pinging %s to ensure it's up.", unit) + assert ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + f"{unit} is not responding after restart delay." + ) + + logger.info("All units are available again.") + + logger.info("Checking number of connected replicas after primary restart.") + hostnames = get_cluster_hostnames(juju, app_name) + number_of_replicas = await get_number_connected_replicas( + hostnames, CharmUsers.VALKEY_ADMIN, admin_password + ) + assert number_of_replicas == init_units_count - 1, ( + f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" + ) + + # ensure data is written in the cluster + logger.info("Checking continuous writes are increasing after primary restart.") + await assert_continuous_writes_increasing( + hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password + ) + + await c_writes.async_stop() + + assert_continuous_writes_consistent( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN, + password=admin_password, + ignore_count=True, # we ignore count here as we know we will miss writes during primary down + ) + + # reset the restart delay to the original value + for unit in juju.status().get_units(app_name): + patch_restart_delay( + juju, + unit_name=unit, + delay=None, + substrate=substrate, + ) From 43e4de20ea73d09c0e7124c58e7876bb6d2c59ea Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Mar 2026 16:22:24 +0000 Subject: [PATCH 177/282] add reboot primary test --- tests/integration/ha/helpers/helpers.py | 36 +++++++++++ tests/integration/ha/test_failover.py | 81 +++++++++++++++++++++++++ 2 files changed, 117 insertions(+) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index 7664046..3f37b9e 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -575,3 +575,39 @@ def patch_restart_delay( lxd_patch_restart_delay(juju, unit_name, delay) case Substrate.K8S: pebble_patch_restart_delay(juju, unit_name, delay=delay, ensure_replan=True) + + +def reboot_unit(juju: jubilant.Juju, unit_name: str, substrate: Substrate) -> None: + """Reboot a unit.""" + if substrate == Substrate.VM: + juju.exec(command="sudo reboot", unit=unit_name) + else: + delete_pod(unit_name.replace("/", "-"), juju.model) + + +def delete_pod(pod_name: str, namespace="testing"): + # Load the kubeconfig file from your local machine (~/.kube/config) + # Note: If running this script INSIDE a pod, use config.load_incluster_config() instead. + config.load_kube_config() + + configuration = client.Configuration.get_default_copy() + configuration.verify_ssl = False + client.Configuration.set_default(configuration) + urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning) + + # CoreV1Api contains the methods for core resources like Pods, Services, etc. + v1 = client.CoreV1Api() + + try: + # Call the API to delete the pod + logger.info("Attempting to delete pod %s in namespace '%s'...", pod_name, namespace) + v1.delete_namespaced_pod(name=pod_name, namespace=namespace) + + logger.info("Success! Pod deleted.") + + except ApiException as e: + # Handle API errors (e.g., pod not found, unauthorized, etc.) + if e.status == 404: + logger.warning("Error: Pod '%s' not found in namespace '%s'.", pod_name, namespace) + else: + logger.error("Exception when calling CoreV1Api->delete_namespaced_pod: %s", e) diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index 854e7e3..e485902 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -20,6 +20,7 @@ VM_RESTART_DELAY_DEFAULT, get_unit_name_from_primary_ip, patch_restart_delay, + reboot_unit, send_process_control_signal, ) @@ -467,3 +468,83 @@ async def test_full_cluster_crash( delay=None, substrate=substrate, ) + + +async def test_reboot_primary( + juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate +) -> None: + """Make sure the cluster can self-heal when the leader goes down.""" + app_name = existing_app(juju) or APP_NAME + + # make sure we have at least two units so we can stop one of them + init_units_count = len(juju.status().get_units(app_name)) + if init_units_count < 2: + juju.add_unit(app_name, num_units=2 - init_units_count) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, app_name, idle_period=10, unit_count=2 + ), + timeout=1200, + ) + + init_units_count = len(juju.status().get_units(app_name)) + await c_writes.async_clear() + c_writes.start() + await asyncio.sleep(10) + + primary_ip = get_primary_ip(juju, app_name) + assert primary_ip, "Failed to get primary endpoint from Juju status." + + # Reboot the primary unit + logger.info("Rebooting primary unit at %s", primary_ip) + primary_unit_name = get_unit_name_from_primary_ip(juju, primary_ip, substrate) + + reboot_unit(juju, primary_unit_name, substrate) + + # wait for unit to reboot + await asyncio.sleep(3) + + # make sure the process is stopped + admin_password = get_password(juju, CharmUsers.VALKEY_ADMIN) + logger.info("Pinging primary unit to ensure it's down.") + assert not ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + "Primary unit is still responding after reboot." + ) + + logger.info("Waiting for primary unit to reboot and become available.") + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, app_name, idle_period=30, unit_count=init_units_count + ), + timeout=1200, + ) + + c_writes.update() + + # on k8s we get a new ip + if substrate == Substrate.VM: + assert ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + "Primary unit is not responding after reboot." + ) + + number_of_replicas = await get_number_connected_replicas( + get_cluster_hostnames(juju, app_name), CharmUsers.VALKEY_ADMIN, admin_password + ) + assert number_of_replicas == init_units_count - 1, ( + f"Expected {init_units_count - 1} replicas to be connected, got {number_of_replicas}" + ) + + await assert_continuous_writes_increasing( + hostnames=get_cluster_hostnames(juju, app_name), + username=CharmUsers.VALKEY_ADMIN, + password=admin_password, + ) + + await c_writes.async_stop() + + assert_continuous_writes_consistent( + hostnames=get_cluster_hostnames(juju, app_name), + username=CharmUsers.VALKEY_ADMIN, + password=admin_password, + ignore_count=True, # we ignore count here as we know we will miss writes during primary down + ) From 7f233ec6c7e2067a46beb4167173593aeed48564 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Mar 2026 16:23:40 +0000 Subject: [PATCH 178/282] add spread files --- tests/spread/k8s/test_failover.py/task.yaml | 7 +++++++ tests/spread/vm/test_failover.py/task.yaml | 7 +++++++ 2 files changed, 14 insertions(+) create mode 100644 tests/spread/k8s/test_failover.py/task.yaml create mode 100644 tests/spread/vm/test_failover.py/task.yaml diff --git a/tests/spread/k8s/test_failover.py/task.yaml b/tests/spread/k8s/test_failover.py/task.yaml new file mode 100644 index 0000000..b6ee62c --- /dev/null +++ b/tests/spread/k8s/test_failover.py/task.yaml @@ -0,0 +1,7 @@ +summary: test_failover.py +environment: + TEST_MODULE: ha/test_failover.py +execute: | + tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate k8s --alluredir="$SPREAD_TASK/allure-results" +artifacts: + - allure-results diff --git a/tests/spread/vm/test_failover.py/task.yaml b/tests/spread/vm/test_failover.py/task.yaml new file mode 100644 index 0000000..5b80b44 --- /dev/null +++ b/tests/spread/vm/test_failover.py/task.yaml @@ -0,0 +1,7 @@ +summary: test_failover.py +environment: + TEST_MODULE: ha/test_failover.py +execute: | + tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate vm --alluredir="$SPREAD_TASK/allure-results" +artifacts: + - allure-results From 1ca413a2c04edc2e5dfcf79cf243ac1885ccce32 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Mar 2026 20:33:00 +0000 Subject: [PATCH 179/282] increase idle time to 30s after password update --- tests/integration/test_charm.py | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tests/integration/test_charm.py b/tests/integration/test_charm.py index a89ab1e..5f27728 100644 --- a/tests/integration/test_charm.py +++ b/tests/integration/test_charm.py @@ -84,7 +84,7 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: # wait for config-changed hook to finish executing juju.wait( - lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), timeout=1200, ) @@ -164,7 +164,7 @@ async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None set_password(juju, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) # wait for config-changed hook to finish executing juju.wait( - lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), timeout=1200, ) @@ -224,7 +224,7 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: with fast_forward(juju): juju.grant_secret(identifier=secret_name, app=APP_NAME) juju.wait( - lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=10), + lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), timeout=1200, ) From daafcef2aa7aa205d37bf56bc113bdd8d48af6bb Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Mar 2026 20:33:24 +0000 Subject: [PATCH 180/282] full cluster reboot test --- tests/integration/ha/test_failover.py | 78 +++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index e485902..4be0edb 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -548,3 +548,81 @@ async def test_reboot_primary( password=admin_password, ignore_count=True, # we ignore count here as we know we will miss writes during primary down ) + + +async def test_full_cluster_reboot( + juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate +) -> None: + """Make sure the cluster can self-heal after all members went down.""" + app_name = existing_app(juju) or APP_NAME + + # make sure we have at least two units so we can stop one of them + init_units_count = len(juju.status().get_units(app_name)) + if init_units_count < 2: + juju.add_unit(app_name, num_units=2 - init_units_count) + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, app_name, idle_period=10, unit_count=2 + ), + timeout=1200, + ) + + init_units_count = len(juju.status().get_units(app_name)) + c_writes.start() + await asyncio.sleep(10) + + for unit in juju.status().get_units(app_name): + reboot_unit(juju, unit, substrate) + + await asyncio.sleep(3) + + # make sure the process is stopped + admin_password = get_password(juju, CharmUsers.VALKEY_ADMIN) + for unit, unit_info in juju.status().get_units(app_name).items(): + unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address + logger.info("Pinging %s to ensure it's down.", unit) + assert not ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + f"{unit} still responding after reboot." + ) + + # ensure the stopped unit was restarted + logger.info("Waiting for cluster to become available.") + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, app_name, idle_period=30, unit_count=init_units_count + ), + timeout=1200, + ) + + for unit, unit_info in juju.status().get_units(app_name).items(): + unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address + logger.info("Pinging %s to ensure it's up.", unit) + assert ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + f"{unit} is not responding after restart delay." + ) + + logger.info("All units are available again.") + + logger.info("Checking number of connected replicas after primary restart.") + hostnames = get_cluster_hostnames(juju, app_name) + number_of_replicas = await get_number_connected_replicas( + hostnames, CharmUsers.VALKEY_ADMIN, admin_password + ) + assert number_of_replicas == init_units_count - 1, ( + f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" + ) + + # ensure data is written in the cluster + logger.info("Checking continuous writes are increasing after primary restart.") + await assert_continuous_writes_increasing( + hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password + ) + + await c_writes.async_stop() + + assert_continuous_writes_consistent( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN, + password=admin_password, + ignore_count=True, # we ignore count here as we know we will miss writes during primary down + ) From 83867bd58a72e61e72b79b713e2be52431932bf4 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 19 Mar 2026 20:41:18 +0000 Subject: [PATCH 181/282] update cw endoiints --- tests/integration/ha/test_failover.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index 4be0edb..88363b1 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -594,6 +594,8 @@ async def test_full_cluster_reboot( timeout=1200, ) + c_writes.update() + for unit, unit_info in juju.status().get_units(app_name).items(): unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address logger.info("Pinging %s to ensure it's up.", unit) From fc3a9e31f87d8c80fb7f2080ccb8a12066b5ef22 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 23 Mar 2026 08:55:29 +0000 Subject: [PATCH 182/282] add error handling on restart --- src/events/base_events.py | 62 ++++++++++++++++++++++----------------- 1 file changed, 35 insertions(+), 27 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 45e0a01..9f34558 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -567,39 +567,47 @@ def _on_restart_workload(self, event: RestartWorkloadEvent) -> None: event.defer() return - if event.restart_valkey: - self.charm.workload.restart(self.charm.workload.valkey_service) - if event.restart_sentinel: - self.charm.sentinel_manager.restart_service() + try: + if event.restart_valkey: + self.charm.workload.restart(self.charm.workload.valkey_service) + if event.restart_sentinel: + self.charm.sentinel_manager.restart_service() - if event.restart_valkey and not self.charm.cluster_manager.is_healthy( - check_replica_sync=False - ): - self.charm.status.set_running_status( + if event.restart_valkey and not self.charm.cluster_manager.is_healthy( + check_replica_sync=False + ): + self.charm.status.set_running_status( + ClusterStatuses.VALKEY_UNHEALTHY_RESTART.value, + scope="unit", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + event.defer() + return + + self.charm.state.statuses.delete( ClusterStatuses.VALKEY_UNHEALTHY_RESTART.value, scope="unit", - component_name=self.charm.cluster_manager.name, - statuses_state=self.charm.state.statuses, + component=self.charm.cluster_manager.name, ) - self.charm.state.statuses.delete( - ClusterStatuses.VALKEY_UNHEALTHY_RESTART.value, - scope="unit", - component=self.charm.cluster_manager.name, - ) + if event.restart_sentinel and not self.charm.sentinel_manager.is_healthy(): + self.charm.status.set_running_status( + ClusterStatuses.SENTINEL_UNHEALTHY_RESTART.value, + scope="unit", + component_name=self.charm.cluster_manager.name, + statuses_state=self.charm.state.statuses, + ) + event.defer() + return - if event.restart_sentinel and not self.charm.sentinel_manager.is_healthy(): - self.charm.status.set_running_status( + self.charm.state.statuses.delete( ClusterStatuses.SENTINEL_UNHEALTHY_RESTART.value, scope="unit", - component_name=self.charm.cluster_manager.name, - statuses_state=self.charm.state.statuses, + component=self.charm.cluster_manager.name, ) - - self.charm.state.statuses.delete( - ClusterStatuses.SENTINEL_UNHEALTHY_RESTART.value, - scope="unit", - component=self.charm.cluster_manager.name, - ) - - restart_lock.release_lock() + except ValkeyServicesFailedToStartError as e: + logger.error(e) + event.defer() + finally: + restart_lock.release_lock() From 08f60eaac7d7a605658ae9491de05b4369bff47e Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 23 Mar 2026 08:59:43 +0000 Subject: [PATCH 183/282] invert tls client condition --- src/events/tls.py | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/events/tls.py b/src/events/tls.py index e133941..73fccf6 100644 --- a/src/events/tls.py +++ b/src/events/tls.py @@ -308,13 +308,13 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: and self.charm.state.bind_address != self.charm.state.unit_server.model.private_ip ): if self.charm.tls_manager.certificate_sans_require_update(): - if not self.charm.state.client_tls_relation: - self.charm.tls_manager.create_and_store_self_signed_certificate() - else: + if self.charm.state.client_tls_relation: self.charm.tls_events.refresh_tls_certificates_event.emit() event.defer() return + self.charm.tls_manager.create_and_store_self_signed_certificate() + self.charm.state.unit_server.update( { "hostname": self.charm.state.hostname, From 086b196de90032b3f5378d599d01ab2ed24a35c3 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 23 Mar 2026 09:04:23 +0000 Subject: [PATCH 184/282] add source of scripts and fix typo --- tests/integration/ha/helpers/deploy_chaos_mesh.sh | 1 + tests/integration/ha/helpers/destroy_chaos_mesh.sh | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/tests/integration/ha/helpers/deploy_chaos_mesh.sh b/tests/integration/ha/helpers/deploy_chaos_mesh.sh index 0a11fb8..05792fa 100755 --- a/tests/integration/ha/helpers/deploy_chaos_mesh.sh +++ b/tests/integration/ha/helpers/deploy_chaos_mesh.sh @@ -2,6 +2,7 @@ # Utility script to install chaosmesh in the K8S cluster, so test can use it to simulate # infrastructure failures +# source: https://github.com/canonical/mongo-single-kernel-library/blob/8/edge/tests/integration/helpers/scripts/deploy_chaos_mesh.sh chaos_mesh_ns=$1 chaos_mesh_version="2.4.1" diff --git a/tests/integration/ha/helpers/destroy_chaos_mesh.sh b/tests/integration/ha/helpers/destroy_chaos_mesh.sh index eff5404..3b08194 100755 --- a/tests/integration/ha/helpers/destroy_chaos_mesh.sh +++ b/tests/integration/ha/helpers/destroy_chaos_mesh.sh @@ -1,6 +1,7 @@ #!/bin/bash # Utility script to removing chaosmesh from the K8S cluster, to clean up test artefacts +# source: https://github.com/canonical/mongo-single-kernel-library/blob/8/edge/tests/integration/helpers/scripts/destroy_chaos_mesh.sh chaos_mesh_ns=$1 @@ -12,7 +13,7 @@ destroy_chaos_mesh() { echo "deleting api-resources" for i in $(kubectl api-resources | grep chaos-mesh | awk '{print $1}'); do timeout 30 kubectl delete "${i}" --all --all-namespaces || :; done - if [ "$(kubectl -n "${chaos_mesh_ns}" get mutatingwebhookconfiguration | grep -c 'choas-mesh-mutation')" = "1" ]; then + if [ "$(kubectl -n "${chaos_mesh_ns}" get mutatingwebhookconfiguration | grep -c 'chaos-mesh-mutation')" = "1" ]; then echo "deleting chaos-mesh-mutation" timeout 30 kubectl -n "${chaos_mesh_ns}" delete mutatingwebhookconfiguration chaos-mesh-mutation || : fi From 52d4dacfc2b03ec5e9edbf3db22689dbecf7faab Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 23 Mar 2026 09:51:45 +0000 Subject: [PATCH 185/282] feedback fixes --- tests/integration/ha/helpers/helpers.py | 50 +++++++++++++++++++----- tests/integration/ha/test_network_cut.py | 29 +++++++++----- 2 files changed, 60 insertions(+), 19 deletions(-) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index 3cec0fd..1af25a3 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -12,8 +12,8 @@ from logging import getLogger import jubilant -import kubernetes as kubernetes import urllib3 +import yaml from kubernetes import client, config from kubernetes.client.rest import ApiException from tenacity import RetryError, Retrying, stop_after_attempt, wait_fixed @@ -30,6 +30,8 @@ def lxd_cut_network_from_unit_with_ip_change(machine_name: str) -> None: cut_network_command = f"lxc config device add {machine_name} eth0 none" subprocess.check_call(cut_network_command.split()) + time.sleep(5) + def lxd_cut_network_from_unit_without_ip_change(machine_name: str) -> None: """Cut network from a lxc container (without causing the change of the unit IP address).""" @@ -107,15 +109,26 @@ def cut_network_from_unit( k8s_cut_network_from_unit_without_ip_change(model_name, machine_name) -def restore_network_to_unit(substrate: Substrate, model_name: str, machine_name: str) -> None: +def restore_network_to_unit( + substrate: Substrate, model_name: str, machine_name: str, change_ip: bool = False +) -> None: """Restore network from a lxc container. Args: substrate: The substrate the test is running on model_name: The juju model name (only applicable for k8s) machine_name: lxc container hostname or k8s pod name + change_ip: Whether the network cut changed the IP address of the unit (only applicable for VMs) """ if substrate == Substrate.VM: + if change_ip: + limit_set_command = f"lxc config device set {machine_name} eth0 limits.egress=" + subprocess.check_call(limit_set_command.split()) + limit_set_command = f"lxc config device set {machine_name} eth0 limits.ingress=" + subprocess.check_call(limit_set_command.split()) + limit_set_command = f"lxc config device set {machine_name} eth0 limits.priority=" + subprocess.check_call(limit_set_command.split()) + return # remove mask from eth0 restore_network_command = f"lxc config device remove {machine_name} eth0" subprocess.check_call(restore_network_command.split()) @@ -177,7 +190,7 @@ def get_unit_name_from_primary_ip( Args: juju: Juju client - primary_ip: The primary endpoint in the form of "ip:port" + primary_ip: The primary endpoint IP address to get the corresponding container name for substrate: The substrate the test is running on Returns: @@ -247,13 +260,17 @@ def is_unit_reachable_k8s(namespace: str, source_pod_name: str, to_host: str) -> v1.create_namespaced_pod(namespace=namespace, body=pod_manifest) # Poll the pod status until it completes - while True: - pod_status = v1.read_namespaced_pod(name=temp_pod_name, namespace=namespace) - phase = pod_status.status.phase + phase = None + for attempt in Retrying(stop=stop_after_attempt(30), wait=wait_fixed(2)): + with attempt: + pod_status = v1.read_namespaced_pod(name=temp_pod_name, namespace=namespace) + phase = pod_status.status.phase - if phase in ["Succeeded", "Failed"]: - break - time.sleep(1) # Wait a second before checking again + if phase not in ["Succeeded", "Failed"]: + logger.info( + f"Pod '{temp_pod_name}' is in phase '{phase}'. Waiting for completion..." + ) + raise ValueError("Pod not completed yet") # Optional: Fetch the actual ping output logs for debugging logs = v1.read_namespaced_pod_log(name=temp_pod_name, namespace=namespace) @@ -361,3 +378,18 @@ def get_sans_from_certificate(certificate_path: str) -> dict[str, set[str]]: sans_ip.add(san_value) return {"sans_ip": sans_ip, "sans_dns": sans_dns} + + +def get_controller_hostname(juju: jubilant.Juju) -> str: + """Return controller machine hostname.""" + raw_model = juju.cli("show-model", juju.model, include_model=False) + raw_controller = juju.cli("show-controller", include_model=False) + + model_details = yaml.safe_load(raw_model) + controller_details = yaml.safe_load(raw_controller) + controller_name = model_details[juju.model.split(":")[1]]["controller-name"] + + return [ + machine.get("instance-id") + for machine in controller_details[controller_name]["controller-machines"].values() + ][0] diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 3035385..11acd38 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -13,6 +13,7 @@ ) from tests.integration.ha.helpers.helpers import ( cut_network_from_unit, + get_controller_hostname, get_sans_from_certificate, get_unit_name_from_primary_ip, hostname_from_unit, @@ -87,12 +88,12 @@ async def test_network_cut_primary( # noqa: C901 c_writes.start() # Get the current primary unit - primary_ip = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) - assert primary_ip, "Failed to get primary endpoint from Juju status." + primary_endpoint = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) + assert primary_endpoint, "Failed to get primary endpoint from Juju status." # Cut the network to the primary unit - logger.info("Cutting network to primary unit at %s", primary_ip) - primary_unit_name = get_unit_name_from_primary_ip(juju, primary_ip, substrate) + logger.info("Cutting network to primary unit at %s", primary_endpoint) + primary_unit_name = get_unit_name_from_primary_ip(juju, primary_endpoint, substrate) download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) @@ -104,6 +105,12 @@ async def test_network_cut_primary( # noqa: C901 logger.info("Identified container name for primary unit: %s", primary_hostname) cut_network_from_unit(substrate, juju.model, machine_name, change_ip=change_ip) + if substrate == Substrate.VM: + controller_hostname = get_controller_hostname(juju) + assert not is_unit_reachable(juju, controller_hostname, primary_hostname, substrate), ( + f"Controller {controller_hostname} can still reach the primary unit {primary_hostname} after network cut." + ) + for unit in juju.status().apps[APP_NAME].units: if unit == primary_unit_name: continue @@ -114,24 +121,26 @@ async def test_network_cut_primary( # noqa: C901 logger.info( "Network successfully cut to primary unit %s at %s. Verifying new primary election...", primary_unit_name, - primary_ip, + primary_endpoint, ) - new_primary_ip = None + new_primary_endpoint = None for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10)): with attempt: try: - new_primary_ip = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) + new_primary_endpoint = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) break except ValueError as e: logger.warning(f"Error getting primary IP after network cut: {e}") logger.info("Waiting for new primary to be elected...") - assert new_primary_ip and new_primary_ip != primary_ip, ( + assert new_primary_endpoint and new_primary_endpoint != primary_endpoint, ( "Primary IP did not change after cutting network to the primary unit." ) logger.info( - "New primary IP after network cut: %s vs old primary IP: %s", new_primary_ip, primary_ip + "New primary IP after network cut: %s vs old primary IP: %s", + new_primary_endpoint, + primary_endpoint, ) hostnames = get_cluster_hostnames(juju, APP_NAME) @@ -175,7 +184,7 @@ async def test_network_cut_primary( # noqa: C901 # read ip from cert and check if is a different ip than before if change_ip is True certificate_sans = get_sans_from_certificate("./client.pem") if change_ip: - assert primary_ip not in certificate_sans["sans_ip"], ( + assert primary_endpoint not in certificate_sans["sans_ip"], ( "The old IP should not be in SANs of client certificate after network cut and IP change." ) assert get_ip_from_unit(juju, primary_unit_name) in certificate_sans["sans_ip"], ( From e6d1def4a6357ecabcb207152edc4071c9c8cae5 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 23 Mar 2026 12:43:26 +0000 Subject: [PATCH 186/282] check old primary is down and new ip in sentinels --- tests/integration/ha/helpers/helpers.py | 34 ++++++------ tests/integration/ha/test_network_cut.py | 67 ++++++++++++++++++------ tests/integration/helpers.py | 38 +++++++++++++- 3 files changed, 107 insertions(+), 32 deletions(-) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index 1af25a3..2d28fb8 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -122,16 +122,16 @@ def restore_network_to_unit( """ if substrate == Substrate.VM: if change_ip: - limit_set_command = f"lxc config device set {machine_name} eth0 limits.egress=" - subprocess.check_call(limit_set_command.split()) - limit_set_command = f"lxc config device set {machine_name} eth0 limits.ingress=" - subprocess.check_call(limit_set_command.split()) - limit_set_command = f"lxc config device set {machine_name} eth0 limits.priority=" - subprocess.check_call(limit_set_command.split()) + # remove mask from eth0 + restore_network_command = f"lxc config device remove {machine_name} eth0" + subprocess.check_call(restore_network_command.split()) return - # remove mask from eth0 - restore_network_command = f"lxc config device remove {machine_name} eth0" - subprocess.check_call(restore_network_command.split()) + limit_set_command = f"lxc config device set {machine_name} eth0 limits.egress=" + subprocess.check_call(limit_set_command.split()) + limit_set_command = f"lxc config device set {machine_name} eth0 limits.ingress=" + subprocess.check_call(limit_set_command.split()) + limit_set_command = f"lxc config device set {machine_name} eth0 limits.priority=" + subprocess.check_call(limit_set_command.split()) else: env = os.environ env["KUBECONFIG"] = os.path.expanduser("~/.kube/config") @@ -301,10 +301,10 @@ def is_unit_reachable_k8s(namespace: str, source_pod_name: str, to_host: str) -> logger.error(f"Failed to delete temporary pod {temp_pod_name}: {e}") -def is_unit_reachable_lxd(from_host: str, to_host: str) -> bool: +def is_unit_reachable_lxd(from_host: str, to_host: str, number_of_retries: int = 10) -> bool: """Test network reachability between LXD hosts.""" try: - for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10)): + for attempt in Retrying(stop=stop_after_attempt(number_of_retries), wait=wait_fixed(10)): with attempt: ping = subprocess.call( f"lxc exec {from_host} -- ping -c 5 -W 2 {to_host}".split(), @@ -321,7 +321,11 @@ def is_unit_reachable_lxd(from_host: str, to_host: str) -> bool: def is_unit_reachable( - juju: jubilant.Juju, from_host: str, to_host: str, substrate: Substrate + juju: jubilant.Juju, + from_host: str, + to_host: str, + substrate: Substrate, + number_of_retries: int = 10, ) -> bool: """Test network reachability to a unit based on the substrate.""" assert juju.model, "Juju client must be connected to a model before checking unit reachability" @@ -329,7 +333,7 @@ def is_unit_reachable( case Substrate.K8S: return is_unit_reachable_k8s(juju.model, from_host, to_host) case Substrate.VM: - return is_unit_reachable_lxd(from_host, to_host) + return is_unit_reachable_lxd(from_host, to_host, number_of_retries=number_of_retries) def hostname_from_unit(juju: jubilant.Juju, unit_name: str) -> str: @@ -380,14 +384,14 @@ def get_sans_from_certificate(certificate_path: str) -> dict[str, set[str]]: return {"sans_ip": sans_ip, "sans_dns": sans_dns} -def get_controller_hostname(juju: jubilant.Juju) -> str: +def lxd_get_controller_hostname(juju: jubilant.Juju) -> str: """Return controller machine hostname.""" raw_model = juju.cli("show-model", juju.model, include_model=False) raw_controller = juju.cli("show-controller", include_model=False) model_details = yaml.safe_load(raw_model) controller_details = yaml.safe_load(raw_controller) - controller_name = model_details[juju.model.split(":")[1]]["controller-name"] + controller_name = model_details[juju.model]["controller-name"] return [ machine.get("instance-id") diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 11acd38..e25b899 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -13,11 +13,11 @@ ) from tests.integration.ha.helpers.helpers import ( cut_network_from_unit, - get_controller_hostname, get_sans_from_certificate, get_unit_name_from_primary_ip, hostname_from_unit, is_unit_reachable, + lxd_get_controller_hostname, restore_network_to_unit, ) from tests.integration.helpers import ( @@ -33,6 +33,7 @@ get_number_connected_replicas, get_password, get_primary_ip, + get_sentinels, ) logger = logging.getLogger(__name__) @@ -82,18 +83,19 @@ async def test_network_cut_primary( # noqa: C901 pytest.skip("Changing IP is not applicable for k8s substrate.") download_client_certificate_from_unit(juju, APP_NAME) + hostnames = get_cluster_hostnames(juju, APP_NAME) c_writes.tls_enabled = tls_enabled await c_writes.async_clear() c_writes.start() # Get the current primary unit - primary_endpoint = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) - assert primary_endpoint, "Failed to get primary endpoint from Juju status." + old_primary_endpoint = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) + assert old_primary_endpoint, "Failed to get primary endpoint from Juju status." # Cut the network to the primary unit - logger.info("Cutting network to primary unit at %s", primary_endpoint) - primary_unit_name = get_unit_name_from_primary_ip(juju, primary_endpoint, substrate) + logger.info("Cutting network to primary unit at %s", old_primary_endpoint) + primary_unit_name = get_unit_name_from_primary_ip(juju, old_primary_endpoint, substrate) download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) @@ -105,9 +107,12 @@ async def test_network_cut_primary( # noqa: C901 logger.info("Identified container name for primary unit: %s", primary_hostname) cut_network_from_unit(substrate, juju.model, machine_name, change_ip=change_ip) + # on K8s the controller is on a different namespace if substrate == Substrate.VM: - controller_hostname = get_controller_hostname(juju) - assert not is_unit_reachable(juju, controller_hostname, primary_hostname, substrate), ( + controller_hostname = lxd_get_controller_hostname(juju) + assert not is_unit_reachable( + juju, controller_hostname, primary_hostname, substrate, number_of_retries=3 + ), ( f"Controller {controller_hostname} can still reach the primary unit {primary_hostname} after network cut." ) @@ -115,13 +120,17 @@ async def test_network_cut_primary( # noqa: C901 if unit == primary_unit_name: continue assert not is_unit_reachable( - juju, hostname_from_unit(juju, unit), primary_hostname, substrate + juju, + hostname_from_unit(juju, unit), + primary_hostname, + substrate, + number_of_retries=3, ), f"Unit {unit} can still reach the primary unit {primary_hostname} after network cut." logger.info( "Network successfully cut to primary unit %s at %s. Verifying new primary election...", primary_unit_name, - primary_endpoint, + old_primary_endpoint, ) new_primary_endpoint = None @@ -134,16 +143,15 @@ async def test_network_cut_primary( # noqa: C901 logger.warning(f"Error getting primary IP after network cut: {e}") logger.info("Waiting for new primary to be elected...") - assert new_primary_endpoint and new_primary_endpoint != primary_endpoint, ( + assert new_primary_endpoint and new_primary_endpoint != old_primary_endpoint, ( "Primary IP did not change after cutting network to the primary unit." ) logger.info( "New primary IP after network cut: %s vs old primary IP: %s", new_primary_endpoint, - primary_endpoint, + old_primary_endpoint, ) - hostnames = get_cluster_hostnames(juju, APP_NAME) # check replica number that it is down to NUM_UNITS - 2 number_of_replicas = await get_number_connected_replicas( hostnames=hostnames, @@ -154,6 +162,19 @@ async def test_network_cut_primary( # noqa: C901 assert number_of_replicas == NUM_UNITS - 2, ( f"Expected {NUM_UNITS - 2} connected replicas, got {number_of_replicas}." ) + + for hostname in hostnames: + if hostname == old_primary_endpoint: + continue + old_primary_sentinel = [ + sentinel + for sentinel in get_sentinels(juju, primary_ip=hostname, tls_enabled=tls_enabled) + if old_primary_endpoint in sentinel["ip"] + ][0] + assert "s_down" in old_primary_sentinel["flags"], ( + f"The old primary IP {old_primary_endpoint} should be marked as down in sentinels list after network cut for hostname {hostname}." + ) + await assert_continuous_writes_increasing( hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN.value, @@ -163,7 +184,7 @@ async def test_network_cut_primary( # noqa: C901 # restore network to the original primary unit logger.info("Restoring network to original primary unit at %s", primary_hostname) - restore_network_to_unit(substrate, juju.model, machine_name) + restore_network_to_unit(substrate, juju.model, machine_name, change_ip=change_ip) juju.wait( lambda status: are_apps_active_and_agents_idle( status, APP_NAME, unit_count=NUM_UNITS, idle_period=30 @@ -184,14 +205,14 @@ async def test_network_cut_primary( # noqa: C901 # read ip from cert and check if is a different ip than before if change_ip is True certificate_sans = get_sans_from_certificate("./client.pem") if change_ip: - assert primary_endpoint not in certificate_sans["sans_ip"], ( + assert old_primary_endpoint not in certificate_sans["sans_ip"], ( "The old IP should not be in SANs of client certificate after network cut and IP change." ) assert get_ip_from_unit(juju, primary_unit_name) in certificate_sans["sans_ip"], ( "The new IP should be in SANs of client certificate after network cut and IP change." ) - hostnames = get_cluster_hostnames(juju, APP_NAME) + hostnames = get_cluster_hostnames(juju, APP_NAME, use_juju_exec=True) # check replica number that it is back to NUM_UNITS - 1 number_of_replicas = await get_number_connected_replicas( hostnames=hostnames, @@ -203,6 +224,22 @@ async def test_network_cut_primary( # noqa: C901 f"Expected {NUM_UNITS - 1} connected replicas after network restoration, got {number_of_replicas}." ) + if change_ip: + # only on lxd + for hostname in hostnames: + if hostname == new_primary_endpoint: + continue + new_primary_discovered = False + for sentinel in get_sentinels(juju, primary_ip=hostname, tls_enabled=tls_enabled): + assert old_primary_endpoint not in sentinel["ip"], ( + "The old IP should not be in sentinels list after network cut and IP change." + ) + if new_primary_endpoint in sentinel["ip"]: + new_primary_discovered = True + assert new_primary_discovered, ( + f"The new primary IP {new_primary_endpoint} should be in sentinels list after network cut and IP change for hostname {hostname}." + ) + await assert_continuous_writes_increasing( hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN.value, diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 0c6dea7..671e903 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -33,6 +33,8 @@ INTERNAL_USERS_PASSWORD_CONFIG, INTERNAL_USERS_SECRET_LABEL_SUFFIX, PEER_RELATION, + SENTINEL_PORT, + SENTINEL_TLS_PORT, TLS_PORT, CharmUsers, Substrate, @@ -227,16 +229,29 @@ def verify_unit_count( return all(count == len(status.get_units(app)) for app, count in unit_count.items()) -def get_cluster_hostnames(juju: jubilant.Juju, app_name: str) -> list[str]: +def get_cluster_hostnames( + juju: jubilant.Juju, app_name: str, use_juju_exec: bool = False +) -> list[str]: """Get the hostnames of all units in the Valkey application. Args: juju: The Juju client instance. app_name: The name of the Valkey application. + use_juju_exec: Whether to use `juju exec` to get the hostnames. Returns: A list of hostnames for all units in the Valkey application. """ + # returns the real ip addresses even if they are not updated on juju's status + if use_juju_exec: + ips = [] + for unit in juju.status().get_units(app_name): + try: + ips.append(juju.exec("unit-get private-address", unit=unit, wait=5).stdout.strip()) + except TimeoutError as e: + logger.warning(f"Failed to get private address for {unit}: {e}") + return ips + status = juju.status() model_info = juju.show_model() @@ -478,9 +493,13 @@ def exec_valkey_cli( command: str, tls_enabled: bool = False, json: bool = False, + sentinel: bool = False, ) -> valkey_cli_result: """Execute a Valkey CLI command and returns the output as a string.""" - pre_command = f"valkey-cli --no-auth-warning -h {hostname} -p {TLS_PORT if tls_enabled else CLIENT_PORT} --user {username} --pass {password} {'--json' if json else ''}" + port = TLS_PORT if tls_enabled else CLIENT_PORT + if sentinel: + port = SENTINEL_TLS_PORT if tls_enabled else SENTINEL_PORT + pre_command = f"valkey-cli --no-auth-warning -h {hostname} -p {port} --user {username} --pass {password} {'--json' if json else ''}" if tls_enabled: pre_command += " --tls --cert client.pem --key client.key --cacert client_ca.pem" exec_command = f"{pre_command} {command}" @@ -722,3 +741,18 @@ def existing_app(juju: jubilant.Juju) -> str | None: def get_ip_from_unit(juju: jubilant.Juju, unit_name: str) -> str: """Get the IP address of a unit based on the substrate type.""" return juju.exec("unit-get", "private-address", unit=unit_name).stdout.strip() + + +def get_sentinels(juju: jubilant.Juju, primary_ip: str, tls_enabled: bool = False) -> list[dict]: + """Get the list of sentinels from the data bag.""" + return json.loads( + exec_valkey_cli( + primary_ip, + username=CharmUsers.SENTINEL_CHARM_ADMIN.value, + password=get_password(juju, user=CharmUsers.SENTINEL_CHARM_ADMIN), + tls_enabled=tls_enabled, + command="sentinel sentinels primary", + json=True, + sentinel=True, + ).stdout + ) From 86f67844ccfe04005e00a9993e0ad84a583880df Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 23 Mar 2026 13:11:01 +0000 Subject: [PATCH 187/282] add checking sentinel state for ip change and no ip change --- tests/integration/ha/helpers/helpers.py | 29 ++++++++- tests/integration/ha/test_network_cut.py | 80 +++++++++++++++++------- 2 files changed, 84 insertions(+), 25 deletions(-) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index 2d28fb8..cbaf973 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -19,7 +19,7 @@ from tenacity import RetryError, Retrying, stop_after_attempt, wait_fixed from literals import Substrate -from tests.integration.helpers import APP_NAME +from tests.integration.helpers import APP_NAME, get_sentinels logger = getLogger(__name__) @@ -397,3 +397,30 @@ def lxd_get_controller_hostname(juju: jubilant.Juju) -> str: machine.get("instance-id") for machine in controller_details[controller_name]["controller-machines"].values() ][0] + + +def endpoint_in_sentinels( + juju: jubilant.Juju, + endpoint: str, + hostname: str, + status: str = "", + tls_enabled: bool = False, +) -> bool: + """Check if the provided endpoint is present in the sentinels list of any of the provided hostnames.""" + endpoint_sentinel = [ + sentinel + for sentinel in get_sentinels(juju, primary_ip=hostname, tls_enabled=tls_enabled) + if endpoint in sentinel["ip"] + ] + if not endpoint_sentinel: + logger.error( + f"Endpoint {endpoint} not found in sentinels list of {hostname}. Sentinels list: {get_sentinels(juju, primary_ip=hostname, tls_enabled=tls_enabled)}" + ) + return False + if status and status not in endpoint_sentinel[0]["flags"]: + logger.error( + f"Endpoint {endpoint} found in sentinels list of {hostname} but with unexpected status. Expected status: {status}, Sentinels list: {get_sentinels(juju, primary_ip=hostname, tls_enabled=tls_enabled)}" + ) + return False + + return True diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index e25b899..3e260a7 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -13,6 +13,7 @@ ) from tests.integration.ha.helpers.helpers import ( cut_network_from_unit, + endpoint_in_sentinels, get_sans_from_certificate, get_unit_name_from_primary_ip, hostname_from_unit, @@ -33,7 +34,6 @@ get_number_connected_replicas, get_password, get_primary_ip, - get_sentinels, ) logger = logging.getLogger(__name__) @@ -83,7 +83,7 @@ async def test_network_cut_primary( # noqa: C901 pytest.skip("Changing IP is not applicable for k8s substrate.") download_client_certificate_from_unit(juju, APP_NAME) - hostnames = get_cluster_hostnames(juju, APP_NAME) + hostnames = get_cluster_hostnames(juju, APP_NAME, use_juju_exec=True) c_writes.tls_enabled = tls_enabled await c_writes.async_clear() @@ -163,16 +163,22 @@ async def test_network_cut_primary( # noqa: C901 f"Expected {NUM_UNITS - 2} connected replicas, got {number_of_replicas}." ) + logger.info( + "Verified that a new primary has been elected and is reachable at %s. Verifying that old primary endpoint is marked as down in sentinels of other units...", + new_primary_endpoint, + ) for hostname in hostnames: if hostname == old_primary_endpoint: continue - old_primary_sentinel = [ - sentinel - for sentinel in get_sentinels(juju, primary_ip=hostname, tls_enabled=tls_enabled) - if old_primary_endpoint in sentinel["ip"] - ][0] - assert "s_down" in old_primary_sentinel["flags"], ( - f"The old primary IP {old_primary_endpoint} should be marked as down in sentinels list after network cut for hostname {hostname}." + assert endpoint_in_sentinels( + juju, old_primary_endpoint, hostname, status="s_down", tls_enabled=tls_enabled + ), ( + f"The old primary endpoint should be marked as down in sentinels list of hostname {hostname} after network cut." + ) + logger.info( + "Verified that old primary endpoint %s is marked as down in sentinels of hostname %s after network cut.", + old_primary_endpoint, + hostname, ) await assert_continuous_writes_increasing( @@ -192,6 +198,11 @@ async def test_network_cut_primary( # noqa: C901 ) c_writes.update() + logger.info( + "Network restored to original primary unit %s. Verifying that all units can reach the original primary unit at %s...", + primary_unit_name, + primary_hostname, + ) for unit in juju.status().apps[APP_NAME].units: if unit == primary_unit_name: continue @@ -200,15 +211,21 @@ async def test_network_cut_primary( # noqa: C901 ), ( f"Unit {unit} cannot reach the original primary unit {primary_hostname} after network restoration." ) + logger.info( + "Unit %s can reach the original primary unit %s after network restoration.", + unit, + primary_hostname, + ) download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) + new_unit_ip = get_ip_from_unit(juju, primary_unit_name) # read ip from cert and check if is a different ip than before if change_ip is True certificate_sans = get_sans_from_certificate("./client.pem") if change_ip: assert old_primary_endpoint not in certificate_sans["sans_ip"], ( "The old IP should not be in SANs of client certificate after network cut and IP change." ) - assert get_ip_from_unit(juju, primary_unit_name) in certificate_sans["sans_ip"], ( + assert new_unit_ip in certificate_sans["sans_ip"], ( "The new IP should be in SANs of client certificate after network cut and IP change." ) @@ -224,20 +241,35 @@ async def test_network_cut_primary( # noqa: C901 f"Expected {NUM_UNITS - 1} connected replicas after network restoration, got {number_of_replicas}." ) - if change_ip: - # only on lxd - for hostname in hostnames: - if hostname == new_primary_endpoint: - continue - new_primary_discovered = False - for sentinel in get_sentinels(juju, primary_ip=hostname, tls_enabled=tls_enabled): - assert old_primary_endpoint not in sentinel["ip"], ( - "The old IP should not be in sentinels list after network cut and IP change." - ) - if new_primary_endpoint in sentinel["ip"]: - new_primary_discovered = True - assert new_primary_discovered, ( - f"The new primary IP {new_primary_endpoint} should be in sentinels list after network cut and IP change for hostname {hostname}." + # only on lxd + for hostname in hostnames: + if hostname == new_unit_ip: + continue + if change_ip: + assert not endpoint_in_sentinels( + juju, old_primary_endpoint, hostname, tls_enabled=tls_enabled + ), ( + f"The old primary endpoint should not be present in sentinels list of hostname {hostname} after network cut and IP change." + ) + assert endpoint_in_sentinels(juju, new_unit_ip, hostname, tls_enabled=tls_enabled), ( + f"The new primary IP should be present in sentinels list of hostname {hostname} after network cut and IP change." + ) + logger.info( + "Verified that old primary endpoint %s is not in sentinels and new primary IP %s is in sentinels of hostname %s after network restoration with IP change.", + old_primary_endpoint, + new_unit_ip, + hostname, + ) + else: + assert endpoint_in_sentinels( + juju, old_primary_endpoint, hostname, tls_enabled=tls_enabled + ), ( + f"The old primary endpoint should be present in sentinels list of hostname {hostname} after network cut and no IP change." + ) + logger.info( + "Verified that old primary endpoint %s is in sentinels of hostname %s after network restoration with no IP change.", + old_primary_endpoint, + hostname, ) await assert_continuous_writes_increasing( From 586c86341a7ba66f026b7e13e5ff18fbfbacf885 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 23 Mar 2026 13:24:14 +0000 Subject: [PATCH 188/282] always use juju exec to get ips --- tests/integration/ha/helpers/helpers.py | 11 +++++++--- tests/integration/ha/test_network_cut.py | 4 ++-- tests/integration/helpers.py | 28 +++++++----------------- 3 files changed, 18 insertions(+), 25 deletions(-) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index cbaf973..581ae15 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -196,10 +196,15 @@ def get_unit_name_from_primary_ip( Returns: The container name corresponding to the primary endpoint. """ - ip_address_attribute = "public_address" if substrate == Substrate.VM else "address" for unit_name, unit in juju.status().apps[APP_NAME].units.items(): - if getattr(unit, ip_address_attribute) == primary_ip: - return unit_name + try: + if ( + juju.exec("unit-get private-address", unit=unit_name, wait=5).stdout.strip() + == primary_ip + ): + return unit_name + except TimeoutError as e: + logger.warning(f"Failed to get private address for {unit_name}: {e}") raise ValueError(f"No unit found with IP address {primary_ip}") diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 3e260a7..14d40c4 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -83,7 +83,7 @@ async def test_network_cut_primary( # noqa: C901 pytest.skip("Changing IP is not applicable for k8s substrate.") download_client_certificate_from_unit(juju, APP_NAME) - hostnames = get_cluster_hostnames(juju, APP_NAME, use_juju_exec=True) + hostnames = get_cluster_hostnames(juju, APP_NAME) c_writes.tls_enabled = tls_enabled await c_writes.async_clear() @@ -229,7 +229,7 @@ async def test_network_cut_primary( # noqa: C901 "The new IP should be in SANs of client certificate after network cut and IP change." ) - hostnames = get_cluster_hostnames(juju, APP_NAME, use_juju_exec=True) + hostnames = get_cluster_hostnames(juju, APP_NAME) # check replica number that it is back to NUM_UNITS - 1 number_of_replicas = await get_number_connected_replicas( hostnames=hostnames, diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 671e903..1f2c104 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -229,36 +229,24 @@ def verify_unit_count( return all(count == len(status.get_units(app)) for app, count in unit_count.items()) -def get_cluster_hostnames( - juju: jubilant.Juju, app_name: str, use_juju_exec: bool = False -) -> list[str]: +def get_cluster_hostnames(juju: jubilant.Juju, app_name: str) -> list[str]: """Get the hostnames of all units in the Valkey application. Args: juju: The Juju client instance. app_name: The name of the Valkey application. - use_juju_exec: Whether to use `juju exec` to get the hostnames. Returns: A list of hostnames for all units in the Valkey application. """ # returns the real ip addresses even if they are not updated on juju's status - if use_juju_exec: - ips = [] - for unit in juju.status().get_units(app_name): - try: - ips.append(juju.exec("unit-get private-address", unit=unit, wait=5).stdout.strip()) - except TimeoutError as e: - logger.warning(f"Failed to get private address for {unit}: {e}") - return ips - - status = juju.status() - model_info = juju.show_model() - - if model_info.type == "kubernetes": - return [unit.address for unit in status.get_units(app_name).values()] - - return [unit.public_address for unit in status.get_units(app_name).values()] + ips = [] + for unit in juju.status().get_units(app_name): + try: + ips.append(juju.exec("unit-get private-address", unit=unit, wait=5).stdout.strip()) + except TimeoutError as e: + logger.warning(f"Failed to get private address for {unit}: {e}") + return ips def get_secret_by_label(juju: jubilant.Juju, label: str) -> dict[str, str]: From 0da51e9c98a04d02fee9a45db472fa8ef00c9c2a Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 23 Mar 2026 13:27:22 +0000 Subject: [PATCH 189/282] remove comment --- tests/integration/ha/test_network_cut.py | 1 - 1 file changed, 1 deletion(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 14d40c4..2fd655f 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -241,7 +241,6 @@ async def test_network_cut_primary( # noqa: C901 f"Expected {NUM_UNITS - 1} connected replicas after network restoration, got {number_of_replicas}." ) - # only on lxd for hostname in hostnames: if hostname == new_unit_ip: continue From 76d22f4ed26eb8ecdbb801eff861c1d752162e9b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 23 Mar 2026 20:30:45 +0000 Subject: [PATCH 190/282] fix network test for k8s --- tests/integration/ha/test_network_cut.py | 62 +++++++++++++----------- 1 file changed, 35 insertions(+), 27 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 2fd655f..0e24956 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -90,30 +90,32 @@ async def test_network_cut_primary( # noqa: C901 c_writes.start() # Get the current primary unit - old_primary_endpoint = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) - assert old_primary_endpoint, "Failed to get primary endpoint from Juju status." + old_primary_ip = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) + assert old_primary_ip, "Failed to get primary endpoint from Juju status." # Cut the network to the primary unit - logger.info("Cutting network to primary unit at %s", old_primary_endpoint) - primary_unit_name = get_unit_name_from_primary_ip(juju, old_primary_endpoint, substrate) + logger.info("Cutting network to primary unit at %s", old_primary_ip) + primary_unit_name = get_unit_name_from_primary_ip(juju, old_primary_ip, substrate) download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) - primary_hostname = hostname_from_unit(juju, primary_unit_name) - machine_name = primary_hostname + old_primary_hostname = hostname_from_unit(juju, primary_unit_name) + machine_name = old_primary_hostname if substrate == Substrate.K8S: - primary_hostname = f"{primary_hostname}.{APP_NAME}-endpoints" + old_primary_hostname = f"{old_primary_hostname}.{APP_NAME}-endpoints" - logger.info("Identified container name for primary unit: %s", primary_hostname) + old_primary_endpoint = old_primary_ip if substrate == Substrate.VM else old_primary_hostname + + logger.info("Identified container name for primary unit: %s", old_primary_hostname) cut_network_from_unit(substrate, juju.model, machine_name, change_ip=change_ip) # on K8s the controller is on a different namespace if substrate == Substrate.VM: controller_hostname = lxd_get_controller_hostname(juju) assert not is_unit_reachable( - juju, controller_hostname, primary_hostname, substrate, number_of_retries=3 + juju, controller_hostname, old_primary_hostname, substrate, number_of_retries=3 ), ( - f"Controller {controller_hostname} can still reach the primary unit {primary_hostname} after network cut." + f"Controller {controller_hostname} can still reach the primary unit {old_primary_hostname} after network cut." ) for unit in juju.status().apps[APP_NAME].units: @@ -122,34 +124,36 @@ async def test_network_cut_primary( # noqa: C901 assert not is_unit_reachable( juju, hostname_from_unit(juju, unit), - primary_hostname, + old_primary_hostname, substrate, number_of_retries=3, - ), f"Unit {unit} can still reach the primary unit {primary_hostname} after network cut." + ), ( + f"Unit {unit} can still reach the primary unit {old_primary_hostname} after network cut." + ) logger.info( "Network successfully cut to primary unit %s at %s. Verifying new primary election...", primary_unit_name, - old_primary_endpoint, + old_primary_ip, ) - new_primary_endpoint = None + new_primary_ip = None for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10)): with attempt: try: - new_primary_endpoint = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) + new_primary_ip = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) break except ValueError as e: logger.warning(f"Error getting primary IP after network cut: {e}") logger.info("Waiting for new primary to be elected...") - assert new_primary_endpoint and new_primary_endpoint != old_primary_endpoint, ( + assert new_primary_ip and new_primary_ip != old_primary_ip, ( "Primary IP did not change after cutting network to the primary unit." ) logger.info( "New primary IP after network cut: %s vs old primary IP: %s", - new_primary_endpoint, - old_primary_endpoint, + new_primary_ip, + old_primary_ip, ) # check replica number that it is down to NUM_UNITS - 2 @@ -165,13 +169,17 @@ async def test_network_cut_primary( # noqa: C901 logger.info( "Verified that a new primary has been elected and is reachable at %s. Verifying that old primary endpoint is marked as down in sentinels of other units...", - new_primary_endpoint, + new_primary_ip, ) for hostname in hostnames: - if hostname == old_primary_endpoint: + if hostname == old_primary_ip: continue assert endpoint_in_sentinels( - juju, old_primary_endpoint, hostname, status="s_down", tls_enabled=tls_enabled + juju, + old_primary_endpoint, + hostname, + status="s_down", + tls_enabled=tls_enabled, ), ( f"The old primary endpoint should be marked as down in sentinels list of hostname {hostname} after network cut." ) @@ -189,7 +197,7 @@ async def test_network_cut_primary( # noqa: C901 ) # restore network to the original primary unit - logger.info("Restoring network to original primary unit at %s", primary_hostname) + logger.info("Restoring network to original primary unit at %s", old_primary_hostname) restore_network_to_unit(substrate, juju.model, machine_name, change_ip=change_ip) juju.wait( lambda status: are_apps_active_and_agents_idle( @@ -201,20 +209,20 @@ async def test_network_cut_primary( # noqa: C901 logger.info( "Network restored to original primary unit %s. Verifying that all units can reach the original primary unit at %s...", primary_unit_name, - primary_hostname, + old_primary_hostname, ) for unit in juju.status().apps[APP_NAME].units: if unit == primary_unit_name: continue assert is_unit_reachable( - juju, hostname_from_unit(juju, unit), primary_hostname, substrate + juju, hostname_from_unit(juju, unit), old_primary_hostname, substrate ), ( - f"Unit {unit} cannot reach the original primary unit {primary_hostname} after network restoration." + f"Unit {unit} cannot reach the original primary unit {old_primary_hostname} after network restoration." ) logger.info( "Unit %s can reach the original primary unit %s after network restoration.", unit, - primary_hostname, + old_primary_hostname, ) download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) @@ -222,7 +230,7 @@ async def test_network_cut_primary( # noqa: C901 # read ip from cert and check if is a different ip than before if change_ip is True certificate_sans = get_sans_from_certificate("./client.pem") if change_ip: - assert old_primary_endpoint not in certificate_sans["sans_ip"], ( + assert old_primary_ip not in certificate_sans["sans_ip"], ( "The old IP should not be in SANs of client certificate after network cut and IP change." ) assert new_unit_ip in certificate_sans["sans_ip"], ( From 0d1ccfd23c0e5834effc955a554c298a5926e474 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Mar 2026 09:57:24 +0000 Subject: [PATCH 191/282] clean import stabilize test and add some feedback --- tests/integration/ha/helpers/helpers.py | 22 +++++++++++----------- tests/integration/ha/test_failover.py | 25 ++++++++++++++----------- tests/integration/helpers.py | 6 +++++- 3 files changed, 30 insertions(+), 23 deletions(-) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index baae5ae..2cd4cae 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -16,7 +16,7 @@ import jubilant import urllib3 import yaml -from kubernetes import client, config +from kubernetes import client, config, stream from kubernetes.client.rest import ApiException from tenacity import RetryError, Retrying, stop_after_attempt, stop_after_delay, wait_fixed @@ -515,8 +515,8 @@ def pebble_patch_restart_delay( if delay else RESTORE_PEBBLE_RESTART_DELAY_YAML ) - kubernetes.config.load_kube_config() - client = kubernetes.client.api.core_v1_api.CoreV1Api() + config.load_kube_config() + kube_client = client.api.core_v1_api.CoreV1Api() pod_name = unit_name.replace("/", "-") container_name = "valkey" @@ -528,7 +528,7 @@ def pebble_patch_restart_delay( pebble_plan_file.flush() copy_file_into_pod( - client, + kube_client, juju.model, pod_name, container_name, @@ -539,8 +539,8 @@ def pebble_patch_restart_delay( add_to_pebble_layer_commands = ( f"/charm/bin/pebble add --combine {service_name} /tmp/pebble_plan_{now}.yml" ) - response = kubernetes.stream.stream( - client.connect_get_namespaced_pod_exec, + response = stream.stream( + kube_client.connect_get_namespaced_pod_exec, pod_name, juju.model, container=container_name, @@ -559,8 +559,8 @@ def pebble_patch_restart_delay( for attempt in Retrying(stop=stop_after_delay(60), wait=wait_fixed(3)): with attempt: replan_pebble_layer_commands = "/charm/bin/pebble replan" - response = kubernetes.stream.stream( - client.connect_get_namespaced_pod_exec, + response = stream.stream( + kube_client.connect_get_namespaced_pod_exec, pod_name, juju.model, container=container_name, @@ -579,7 +579,7 @@ def pebble_patch_restart_delay( def copy_file_into_pod( - client: kubernetes.client.api.core_v1_api.CoreV1Api, + client: client.api.core_v1_api.CoreV1Api, namespace: str, pod_name: str, container_name: str, @@ -599,7 +599,7 @@ def copy_file_into_pod( try: exec_command = ["tar", "xvf", "-", "-C", "/"] - api_response = kubernetes.stream.stream( + api_response = stream.stream( client.connect_get_namespaced_pod_exec, pod_name, namespace, @@ -630,7 +630,7 @@ def copy_file_into_pod( break api_response.close() - except kubernetes.client.rest.ApiException: + except ApiException: assert False diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index 88363b1..896fe15 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -33,6 +33,7 @@ exec_valkey_cli, existing_app, get_cluster_hostnames, + get_ip_from_unit, get_number_connected_replicas, get_password, get_primary_ip, @@ -101,7 +102,7 @@ async def test_kill_db_process_on_primary( await asyncio.sleep(10) primary_ip = get_primary_ip(juju, app_name) - assert primary_ip, "Failed to get primary endpoint from Juju status." + assert primary_ip, "Failed to get primary endpoint from valkey." # Cut the network to the primary unit logger.info("Axing away primary unit at %s", primary_ip) @@ -132,10 +133,12 @@ async def test_kill_db_process_on_primary( await asyncio.sleep( VM_RESTART_DELAY_DEFAULT if substrate == Substrate.VM else K8S_RESTART_DELAY_DEFAULT ) - assert ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( - "Primary unit is not responding after restart delay." - ) - logger.info("Primary unit is available again.") + for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(5), reraise=True): + with attempt: + assert ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + "Primary unit is not responding after restart delay." + ) + logger.info("Primary unit is available again.") logger.info("Checking number of connected replicas after primary restart.") hostnames = get_cluster_hostnames(juju, app_name) @@ -185,7 +188,7 @@ async def test_freeze_db_process_on_primary( await asyncio.sleep(10) primary_ip = get_primary_ip(juju, app_name) - assert primary_ip, "Failed to get primary endpoint from Juju status." + assert primary_ip, "Failed to get primary endpoint from valkey." # Cut the network to the primary unit logger.info("Axing away primary unit at %s", primary_ip) @@ -493,7 +496,7 @@ async def test_reboot_primary( await asyncio.sleep(10) primary_ip = get_primary_ip(juju, app_name) - assert primary_ip, "Failed to get primary endpoint from Juju status." + assert primary_ip, "Failed to get primary endpoint from valkey." # Reboot the primary unit logger.info("Rebooting primary unit at %s", primary_ip) @@ -522,10 +525,10 @@ async def test_reboot_primary( c_writes.update() # on k8s we get a new ip - if substrate == Substrate.VM: - assert ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( - "Primary unit is not responding after reboot." - ) + new_ip = get_ip_from_unit(juju, primary_unit_name) + assert ping(new_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + "Primary unit is not responding after reboot." + ) number_of_replicas = await get_number_connected_replicas( get_cluster_hostnames(juju, app_name), CharmUsers.VALKEY_ADMIN, admin_password diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index d03accc..4fede66 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -27,6 +27,7 @@ TlsAdvancedConfiguration, ) from ops import SecretNotFoundError, StatusBase +from tenacity import Retrying, stop_after_attempt, wait_fixed from literals import ( CLIENT_PORT, @@ -732,7 +733,10 @@ def existing_app(juju: jubilant.Juju) -> str | None: def get_ip_from_unit(juju: jubilant.Juju, unit_name: str) -> str: """Get the IP address of a unit based on the substrate type.""" - return juju.exec("unit-get", "private-address", unit=unit_name).stdout.strip() + for attempt in Retrying(stop=stop_after_attempt(5), wait=wait_fixed(3), reraise=True): + with attempt: + return juju.exec("unit-get", "private-address", unit=unit_name).stdout.strip() + raise ValueError(f"Failed to get IP address for unit {unit_name} after multiple attempts") def get_sentinels(juju: jubilant.Juju, primary_ip: str, tls_enabled: bool = False) -> list[dict]: From 2166af0addeefa2dcb46157b323be5082d45d190 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Mar 2026 10:36:23 +0000 Subject: [PATCH 192/282] add tls version of failover tests --- tests/integration/cw_helpers.py | 13 ++- tests/integration/ha/test_failover.py | 162 ++++++++++++++++++-------- tests/integration/helpers.py | 11 +- 3 files changed, 132 insertions(+), 54 deletions(-) diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index e03d02e..0d7b2c7 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -71,6 +71,7 @@ def assert_continuous_writes_consistent( username: str, password: str, ignore_count: bool = False, + tls_enabled: bool = False, ) -> None: """Assert that the continuous writes are consistent.""" last_written_value = None @@ -80,8 +81,16 @@ def assert_continuous_writes_consistent( raise ValueError("Could not read last written value from file.") for endpoint in hostnames: - last_value = int(exec_valkey_cli(endpoint, username, password, f"LRANGE {KEY} 0 0").stdout) - count = int(exec_valkey_cli(endpoint, username, password, f"LLEN {KEY}").stdout) + last_value = int( + exec_valkey_cli( + endpoint, username, password, f"LRANGE {KEY} 0 0", tls_enabled=tls_enabled + ).stdout + ) + count = int( + exec_valkey_cli( + endpoint, username, password, f"LLEN {KEY}", tls_enabled=tls_enabled + ).stdout + ) logger.info( "Endpoint: %s, last written value: %s, last value in DB: %s, count in DB: %s", endpoint, diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index 896fe15..081c4b3 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -10,6 +10,7 @@ from tenacity import Retrying, stop_after_attempt, wait_fixed from literals import CharmUsers, Substrate +from tests.integration.continuous_writes import ContinuousWrites from tests.integration.cw_helpers import ( assert_continuous_writes_consistent, assert_continuous_writes_increasing, @@ -30,6 +31,7 @@ TLS_CHANNEL, TLS_NAME, are_apps_active_and_agents_idle, + download_client_certificate_from_unit, exec_valkey_cli, existing_app, get_cluster_hostnames, @@ -80,11 +82,19 @@ def test_build_and_deploy( ) +@pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) async def test_kill_db_process_on_primary( - juju: jubilant.Juju, substrate: Substrate, c_writes, c_writes_async_clean + tls_enabled: bool, + juju: jubilant.Juju, + substrate: Substrate, + c_writes: ContinuousWrites, + c_writes_async_clean, ) -> None: """Make sure the cluster can self-heal when the leader goes down.""" app_name = existing_app(juju) or APP_NAME + if tls_enabled: + download_client_certificate_from_unit(juju, APP_NAME) + c_writes.tls_enabled = tls_enabled # make sure we have at least two units so we can stop one of them init_units_count = len(juju.status().get_units(app_name)) @@ -101,7 +111,7 @@ async def test_kill_db_process_on_primary( c_writes.start() await asyncio.sleep(10) - primary_ip = get_primary_ip(juju, app_name) + primary_ip = get_primary_ip(juju, app_name, tls_enabled=tls_enabled) assert primary_ip, "Failed to get primary endpoint from valkey." # Cut the network to the primary unit @@ -124,9 +134,9 @@ async def test_kill_db_process_on_primary( if substrate == Substrate.VM: # K8s restarts much faster so pinging to check will be very flakey logger.info("Pinging primary unit to ensure it's down.") - assert not ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( - "Primary unit is still responding after SIGKILL." - ) + assert not ping( + primary_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled + ), "Primary unit is still responding after SIGKILL." # ensure the stopped unit was restarted logger.info("Waiting for primary unit to restart.") @@ -135,15 +145,15 @@ async def test_kill_db_process_on_primary( ) for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(5), reraise=True): with attempt: - assert ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( - "Primary unit is not responding after restart delay." - ) + assert ping( + primary_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled + ), "Primary unit is not responding after restart delay." logger.info("Primary unit is available again.") logger.info("Checking number of connected replicas after primary restart.") hostnames = get_cluster_hostnames(juju, app_name) number_of_replicas = await get_number_connected_replicas( - hostnames, CharmUsers.VALKEY_ADMIN, admin_password + hostnames, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled ) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" @@ -152,7 +162,10 @@ async def test_kill_db_process_on_primary( # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") await assert_continuous_writes_increasing( - hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN, + password=admin_password, + tls_enabled=tls_enabled, ) await c_writes.async_stop() @@ -162,15 +175,20 @@ async def test_kill_db_process_on_primary( username=CharmUsers.VALKEY_ADMIN, password=admin_password, ignore_count=True, # we ignore count here as we know we will miss writes during primary down + tls_enabled=tls_enabled, ) +@pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) async def test_freeze_db_process_on_primary( - juju: jubilant.Juju, substrate: Substrate, c_writes, c_writes_async_clean + tls_enabled: bool, juju: jubilant.Juju, substrate: Substrate, c_writes, c_writes_async_clean ) -> None: """Make sure the cluster can self-heal when the leader goes down.""" app_name = existing_app(juju) or APP_NAME hostnames = get_cluster_hostnames(juju, app_name) + if tls_enabled: + download_client_certificate_from_unit(juju, APP_NAME) + c_writes.tls_enabled = tls_enabled # make sure we have at least two units so we can stop one of them init_units_count = len(juju.status().get_units(app_name)) @@ -187,7 +205,7 @@ async def test_freeze_db_process_on_primary( c_writes.start() await asyncio.sleep(10) - primary_ip = get_primary_ip(juju, app_name) + primary_ip = get_primary_ip(juju, app_name, tls_enabled=tls_enabled) assert primary_ip, "Failed to get primary endpoint from valkey." # Cut the network to the primary unit @@ -207,27 +225,30 @@ async def test_freeze_db_process_on_primary( # make sure the process is stopped logger.info("Pinging primary unit to ensure it's down.") admin_password = get_password(juju, CharmUsers.VALKEY_ADMIN) - assert not ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( - "Primary unit is still responding after SIGSTOP." - ) + assert not ping( + primary_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled + ), "Primary unit is still responding after SIGSTOP." # ensure the stopped unit was restarted logger.info("Waiting for failover to happen.") await asyncio.sleep(FAILOVER_DELAY) - new_primary_ip = get_primary_ip(juju, app_name) + new_primary_ip = get_primary_ip(juju, app_name, tls_enabled=tls_enabled) assert new_primary_ip != primary_ip, "Primary IP did not change after failover delay." logger.info("Failover successful, new primary is at %s", new_primary_ip) number_of_replicas = await get_number_connected_replicas( - hostnames, CharmUsers.VALKEY_ADMIN, admin_password + hostnames, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled ) assert number_of_replicas == init_units_count - 2, ( f"Expected {init_units_count - 2} replicas to be connected, got {number_of_replicas}" ) await assert_continuous_writes_increasing( - hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN, + password=admin_password, + tls_enabled=tls_enabled, ) send_process_control_signal( @@ -245,21 +266,25 @@ async def test_freeze_db_process_on_primary( if ( "role:master" in exec_valkey_cli( - primary_ip, CharmUsers.VALKEY_ADMIN, admin_password, "info replication" + primary_ip, + CharmUsers.VALKEY_ADMIN, + admin_password, + "info replication", + tls_enabled=tls_enabled, ).stdout ): logger.warning( "Unit is still primary after SIGCONT, waiting for unit to pick up on failover..." ) raise Exception("Unit is still primary after SIGCONT.") - assert ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + assert ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled), ( "Old primary unit is not responding after SIGCONT." ) logger.info("Old primary unit is available again.") logger.info("Checking number of connected replicas after primary restart.") number_of_replicas = await get_number_connected_replicas( - hostnames, CharmUsers.VALKEY_ADMIN, admin_password + hostnames, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled ) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" @@ -268,7 +293,10 @@ async def test_freeze_db_process_on_primary( # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") await assert_continuous_writes_increasing( - hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN, + password=admin_password, + tls_enabled=tls_enabled, ) await c_writes.async_stop() @@ -278,14 +306,19 @@ async def test_freeze_db_process_on_primary( username=CharmUsers.VALKEY_ADMIN, password=admin_password, ignore_count=True, # we ignore count here as we know we will miss writes during primary down + tls_enabled=tls_enabled, ) +@pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) async def test_full_cluster_restart( - juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate + tls_enabled: bool, juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate ) -> None: """Make sure the cluster can self-heal after all members went down.""" app_name = existing_app(juju) or APP_NAME + if tls_enabled: + download_client_certificate_from_unit(juju, APP_NAME) + c_writes.tls_enabled = tls_enabled # make sure we have at least two units so we can stop one of them init_units_count = len(juju.status().get_units(app_name)) @@ -326,9 +359,9 @@ async def test_full_cluster_restart( for unit, unit_info in juju.status().get_units(app_name).items(): unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address logger.info("Pinging %s to ensure it's down.", unit) - assert not ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( - f"{unit} still responding after SIGTERM." - ) + assert not ping( + unit_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled + ), f"{unit} still responding after SIGTERM." # ensure the stopped unit was restarted logger.info("Waiting for units to restart.") @@ -337,7 +370,7 @@ async def test_full_cluster_restart( for unit, unit_info in juju.status().get_units(app_name).items(): unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address logger.info("Pinging %s to ensure it's up.", unit) - assert ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + assert ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled), ( f"{unit} is not responding after restart delay." ) @@ -346,7 +379,7 @@ async def test_full_cluster_restart( logger.info("Checking number of connected replicas after primary restart.") hostnames = get_cluster_hostnames(juju, app_name) number_of_replicas = await get_number_connected_replicas( - hostnames, CharmUsers.VALKEY_ADMIN, admin_password + hostnames, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled ) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" @@ -355,7 +388,10 @@ async def test_full_cluster_restart( # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") await assert_continuous_writes_increasing( - hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN, + password=admin_password, + tls_enabled=tls_enabled, ) await c_writes.async_stop() @@ -365,6 +401,7 @@ async def test_full_cluster_restart( username=CharmUsers.VALKEY_ADMIN, password=admin_password, ignore_count=True, # we ignore count here as we know we will miss writes during primary down + tls_enabled=tls_enabled, ) # reset the restart delay to the original value @@ -377,11 +414,15 @@ async def test_full_cluster_restart( ) +@pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) async def test_full_cluster_crash( - juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate + tls_enabled: bool, juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate ) -> None: """Make sure the cluster can self-heal after all members went down.""" app_name = existing_app(juju) or APP_NAME + if tls_enabled: + download_client_certificate_from_unit(juju, APP_NAME) + c_writes.tls_enabled = tls_enabled # make sure we have at least two units so we can stop one of them init_units_count = len(juju.status().get_units(app_name)) @@ -422,9 +463,9 @@ async def test_full_cluster_crash( for unit, unit_info in juju.status().get_units(app_name).items(): unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address logger.info("Pinging %s to ensure it's down.", unit) - assert not ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( - f"{unit} still responding after SIGKILL." - ) + assert not ping( + unit_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled + ), f"{unit} still responding after SIGKILL." # ensure the stopped unit was restarted logger.info("Waiting for units to restart.") @@ -433,7 +474,7 @@ async def test_full_cluster_crash( for unit, unit_info in juju.status().get_units(app_name).items(): unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address logger.info("Pinging %s to ensure it's up.", unit) - assert ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + assert ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled), ( f"{unit} is not responding after restart delay." ) @@ -442,7 +483,7 @@ async def test_full_cluster_crash( logger.info("Checking number of connected replicas after primary restart.") hostnames = get_cluster_hostnames(juju, app_name) number_of_replicas = await get_number_connected_replicas( - hostnames, CharmUsers.VALKEY_ADMIN, admin_password + hostnames, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled ) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" @@ -451,7 +492,10 @@ async def test_full_cluster_crash( # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") await assert_continuous_writes_increasing( - hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN, + password=admin_password, + tls_enabled=tls_enabled, ) await c_writes.async_stop() @@ -461,6 +505,7 @@ async def test_full_cluster_crash( username=CharmUsers.VALKEY_ADMIN, password=admin_password, ignore_count=True, # we ignore count here as we know we will miss writes during primary down + tls_enabled=tls_enabled, ) # reset the restart delay to the original value @@ -473,11 +518,15 @@ async def test_full_cluster_crash( ) +@pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) async def test_reboot_primary( - juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate + tls_enabled: bool, juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate ) -> None: """Make sure the cluster can self-heal when the leader goes down.""" app_name = existing_app(juju) or APP_NAME + if tls_enabled: + download_client_certificate_from_unit(juju, APP_NAME) + c_writes.tls_enabled = tls_enabled # make sure we have at least two units so we can stop one of them init_units_count = len(juju.status().get_units(app_name)) @@ -495,7 +544,7 @@ async def test_reboot_primary( c_writes.start() await asyncio.sleep(10) - primary_ip = get_primary_ip(juju, app_name) + primary_ip = get_primary_ip(juju, app_name, tls_enabled=tls_enabled) assert primary_ip, "Failed to get primary endpoint from valkey." # Reboot the primary unit @@ -510,9 +559,9 @@ async def test_reboot_primary( # make sure the process is stopped admin_password = get_password(juju, CharmUsers.VALKEY_ADMIN) logger.info("Pinging primary unit to ensure it's down.") - assert not ping(primary_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( - "Primary unit is still responding after reboot." - ) + assert not ping( + primary_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled + ), "Primary unit is still responding after reboot." logger.info("Waiting for primary unit to reboot and become available.") juju.wait( @@ -526,12 +575,15 @@ async def test_reboot_primary( # on k8s we get a new ip new_ip = get_ip_from_unit(juju, primary_unit_name) - assert ping(new_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + assert ping(new_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled), ( "Primary unit is not responding after reboot." ) number_of_replicas = await get_number_connected_replicas( - get_cluster_hostnames(juju, app_name), CharmUsers.VALKEY_ADMIN, admin_password + get_cluster_hostnames(juju, app_name), + CharmUsers.VALKEY_ADMIN, + admin_password, + tls_enabled=tls_enabled, ) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected, got {number_of_replicas}" @@ -541,6 +593,7 @@ async def test_reboot_primary( hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN, password=admin_password, + tls_enabled=tls_enabled, ) await c_writes.async_stop() @@ -549,15 +602,20 @@ async def test_reboot_primary( hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN, password=admin_password, + tls_enabled=tls_enabled, ignore_count=True, # we ignore count here as we know we will miss writes during primary down ) +@pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) async def test_full_cluster_reboot( - juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate + tls_enabled: bool, juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate ) -> None: """Make sure the cluster can self-heal after all members went down.""" app_name = existing_app(juju) or APP_NAME + if tls_enabled: + download_client_certificate_from_unit(juju, APP_NAME) + c_writes.tls_enabled = tls_enabled # make sure we have at least two units so we can stop one of them init_units_count = len(juju.status().get_units(app_name)) @@ -584,9 +642,9 @@ async def test_full_cluster_reboot( for unit, unit_info in juju.status().get_units(app_name).items(): unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address logger.info("Pinging %s to ensure it's down.", unit) - assert not ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( - f"{unit} still responding after reboot." - ) + assert not ping( + unit_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled + ), f"{unit} still responding after reboot." # ensure the stopped unit was restarted logger.info("Waiting for cluster to become available.") @@ -602,7 +660,7 @@ async def test_full_cluster_reboot( for unit, unit_info in juju.status().get_units(app_name).items(): unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address logger.info("Pinging %s to ensure it's up.", unit) - assert ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password), ( + assert ping(unit_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled), ( f"{unit} is not responding after restart delay." ) @@ -611,7 +669,7 @@ async def test_full_cluster_reboot( logger.info("Checking number of connected replicas after primary restart.") hostnames = get_cluster_hostnames(juju, app_name) number_of_replicas = await get_number_connected_replicas( - hostnames, CharmUsers.VALKEY_ADMIN, admin_password + hostnames, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled ) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" @@ -620,7 +678,10 @@ async def test_full_cluster_reboot( # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") await assert_continuous_writes_increasing( - hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN, + password=admin_password, + tls_enabled=tls_enabled, ) await c_writes.async_stop() @@ -629,5 +690,6 @@ async def test_full_cluster_reboot( hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password, + tls_enabled=tls_enabled, ignore_count=True, # we ignore count here as we know we will miss writes during primary down ) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 4fede66..bc95002 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -555,6 +555,7 @@ def ping( hostname: str, username: str, password: str, + tls_enabled: bool = False, ) -> bool: """Ping a Valkey cluster node. @@ -562,12 +563,16 @@ def ping( hostname: The hostname of the Valkey cluster node. username: The username for authentication. password: The password for authentication. + tls_enabled: Whether TLS certificates are needed. Returns: True if the node responds to a ping, False otherwise. """ try: - return exec_valkey_cli(hostname, username, password, "ping").stdout == "PONG" + return ( + exec_valkey_cli(hostname, username, password, "ping", tls_enabled=tls_enabled).stdout + == "PONG" + ) except (subprocess.CalledProcessError, subprocess.TimeoutExpired) as e: logger.warning(f"Error executing Valkey CLI ping on {hostname}: {e}") return False @@ -577,6 +582,7 @@ async def ping_cluster( hostnames: list[str], username: str, password: str, + tls_enabled: bool = False, ) -> bool: """Ping all nodes in the Valkey cluster. @@ -584,12 +590,13 @@ async def ping_cluster( hostnames: List of hostnames of the Valkey cluster nodes. username: The username for authentication. password: The password for authentication. + tls_enabled: Whether TLS certificates are needed. Returns: True if all nodes respond to a ping, False otherwise. """ async with create_valkey_client( - hostnames=hostnames, username=username, password=password + hostnames=hostnames, username=username, password=password, tls_enabled=tls_enabled ) as client: return await client.ping() == "PONG".encode() From 8994b60d416fe98cd935128e8947df1617010281 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 26 Mar 2026 10:40:18 +0000 Subject: [PATCH 193/282] spred files for tls on failover --- tests/spread/k8s/test_failover_tls_off.py/task.yaml | 7 +++++++ .../test_failover_tls_on.py}/task.yaml | 2 +- tests/spread/vm/test_failover_tls_off.py/task.yaml | 7 +++++++ .../test_failover_tls_on.py}/task.yaml | 2 +- 4 files changed, 16 insertions(+), 2 deletions(-) create mode 100644 tests/spread/k8s/test_failover_tls_off.py/task.yaml rename tests/spread/{vm/test_failover.py => k8s/test_failover_tls_on.py}/task.yaml (72%) create mode 100644 tests/spread/vm/test_failover_tls_off.py/task.yaml rename tests/spread/{k8s/test_failover.py => vm/test_failover_tls_on.py}/task.yaml (73%) diff --git a/tests/spread/k8s/test_failover_tls_off.py/task.yaml b/tests/spread/k8s/test_failover_tls_off.py/task.yaml new file mode 100644 index 0000000..0a0501b --- /dev/null +++ b/tests/spread/k8s/test_failover_tls_off.py/task.yaml @@ -0,0 +1,7 @@ +summary: test_failover.py +environment: + TEST_MODULE: ha/test_failover.py +execute: | + tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate k8s -k "tls_off" --alluredir="$SPREAD_TASK/allure-results" +artifacts: + - allure-results diff --git a/tests/spread/vm/test_failover.py/task.yaml b/tests/spread/k8s/test_failover_tls_on.py/task.yaml similarity index 72% rename from tests/spread/vm/test_failover.py/task.yaml rename to tests/spread/k8s/test_failover_tls_on.py/task.yaml index 5b80b44..ac6d931 100644 --- a/tests/spread/vm/test_failover.py/task.yaml +++ b/tests/spread/k8s/test_failover_tls_on.py/task.yaml @@ -2,6 +2,6 @@ summary: test_failover.py environment: TEST_MODULE: ha/test_failover.py execute: | - tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate vm --alluredir="$SPREAD_TASK/allure-results" + tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate k8s -k "tls_on" --alluredir="$SPREAD_TASK/allure-results" artifacts: - allure-results diff --git a/tests/spread/vm/test_failover_tls_off.py/task.yaml b/tests/spread/vm/test_failover_tls_off.py/task.yaml new file mode 100644 index 0000000..1fd20df --- /dev/null +++ b/tests/spread/vm/test_failover_tls_off.py/task.yaml @@ -0,0 +1,7 @@ +summary: test_failover.py +environment: + TEST_MODULE: ha/test_failover.py +execute: | + tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate vm -k "tls_off" --alluredir="$SPREAD_TASK/allure-results" +artifacts: + - allure-results diff --git a/tests/spread/k8s/test_failover.py/task.yaml b/tests/spread/vm/test_failover_tls_on.py/task.yaml similarity index 73% rename from tests/spread/k8s/test_failover.py/task.yaml rename to tests/spread/vm/test_failover_tls_on.py/task.yaml index b6ee62c..8f53bfe 100644 --- a/tests/spread/k8s/test_failover.py/task.yaml +++ b/tests/spread/vm/test_failover_tls_on.py/task.yaml @@ -2,6 +2,6 @@ summary: test_failover.py environment: TEST_MODULE: ha/test_failover.py execute: | - tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate k8s --alluredir="$SPREAD_TASK/allure-results" + tox run -e integration -- "tests/integration/$TEST_MODULE" --substrate vm -k "tls_on" --alluredir="$SPREAD_TASK/allure-results" artifacts: - allure-results From ba70fe6f150b5af770c1298598c21bbb8784f762 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 3 Apr 2026 11:42:35 +0000 Subject: [PATCH 194/282] feedback and refactoring --- src/events/base_events.py | 16 +++ src/events/tls.py | 23 ---- src/managers/tls.py | 3 +- tests/integration/ha/helpers/helpers.py | 14 +-- tests/integration/ha/test_network_cut.py | 138 ++++++++++------------- 5 files changed, 87 insertions(+), 107 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 9f34558..9974fca 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -322,6 +322,22 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: self.charm.sentinel_manager.get_primary_ip() ) + if self.charm.tls_manager.certificate_sans_require_update(): + if self.charm.state.client_tls_relation: + self.charm.tls_events.refresh_tls_certificates_event.emit() + event.defer() + return + + self.charm.tls_manager.create_and_store_self_signed_certificate() + + self.charm.state.unit_server.update( + { + "hostname": self.charm.state.hostname, + "private_ip": self.charm.state.bind_address, + } + ) + self.charm.base_events.restart_workload.emit() + if not self.charm.unit.is_leader(): return diff --git a/src/events/tls.py b/src/events/tls.py index 49d9801..263f8b2 100644 --- a/src/events/tls.py +++ b/src/events/tls.py @@ -25,7 +25,6 @@ CLIENT_TLS_RELATION_NAME, PEER_RELATION, TLS_CLIENT_PRIVATE_KEY_CONFIG, - Substrate, TLSCARotationState, TLSState, ) @@ -332,28 +331,6 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: if self.charm.state.client_tls_relation: self.refresh_tls_certificates_event.emit() - if ( - self.charm.state.unit_server.model.private_ip - and self.charm.state.bind_address != self.charm.state.unit_server.model.private_ip - ): - if self.charm.tls_manager.certificate_sans_require_update(): - if self.charm.state.client_tls_relation: - self.charm.tls_events.refresh_tls_certificates_event.emit() - event.defer() - return - - self.charm.tls_manager.create_and_store_self_signed_certificate() - - self.charm.state.unit_server.update( - { - "hostname": self.charm.state.hostname, - "private_ip": self.charm.state.bind_address, - } - ) - # only restart on VM because on k8s the hostname is stable and does not change with IP changes - if self.charm.state.substrate == Substrate.VM: - self.charm.base_events.restart_workload.emit() - def _orchestrate_ca_rotation(self) -> None: """Orchestrate the workflow when a TLS CA rotation has been initiated.""" match self.charm.state.unit_server.tls_ca_rotation_state: diff --git a/src/managers/tls.py b/src/managers/tls.py index 14f752d..095abef 100644 --- a/src/managers/tls.py +++ b/src/managers/tls.py @@ -95,7 +95,8 @@ def build_sans_ip(self) -> frozenset[str]: """Build the SANs IP for the TLS certificate.""" sans_ip = set() - if not self.state.peer_relation: + # Rely fully on FQDN on k8s + if not self.state.peer_relation or self.state.substrate == "k8s": return frozenset(sans_ip) sans_ip.add(self.state.bind_address) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index 581ae15..923d393 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -89,7 +89,7 @@ def k8s_cut_network_from_unit_without_ip_change(model_name: str, machine_name: s def cut_network_from_unit( - substrate: Substrate, model_name: str, machine_name: str, change_ip: bool = False + substrate: Substrate, model_name: str, machine_name: str, ip_change: bool = False ) -> None: """Cut network from a lxc container. @@ -98,10 +98,10 @@ def cut_network_from_unit( substrate: The substrate the test is running on model_name: The juju model name (only applicable for k8s) machine_name: lxc container hostname or k8s pod name - change_ip: Whether to change the IP address of the unit on the network cut (only applicable for VMs) + ip_change: Whether to change the IP address of the unit on the network cut (only applicable for VMs) """ if substrate == Substrate.VM: - if change_ip: + if ip_change: lxd_cut_network_from_unit_with_ip_change(machine_name) else: lxd_cut_network_from_unit_without_ip_change(machine_name) @@ -110,7 +110,7 @@ def cut_network_from_unit( def restore_network_to_unit( - substrate: Substrate, model_name: str, machine_name: str, change_ip: bool = False + substrate: Substrate, model_name: str, machine_name: str, ip_change: bool = False ) -> None: """Restore network from a lxc container. @@ -118,10 +118,10 @@ def restore_network_to_unit( substrate: The substrate the test is running on model_name: The juju model name (only applicable for k8s) machine_name: lxc container hostname or k8s pod name - change_ip: Whether the network cut changed the IP address of the unit (only applicable for VMs) + ip_change: Whether the network cut changed the IP address of the unit (only applicable for VMs) """ if substrate == Substrate.VM: - if change_ip: + if ip_change: # remove mask from eth0 restore_network_command = f"lxc config device remove {machine_name} eth0" subprocess.check_call(restore_network_command.split()) @@ -404,7 +404,7 @@ def lxd_get_controller_hostname(juju: jubilant.Juju) -> str: ][0] -def endpoint_in_sentinels( +def is_endpoint_in_sentinels( juju: jubilant.Juju, endpoint: str, hostname: str, diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 0e24956..4a92fca 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -13,10 +13,10 @@ ) from tests.integration.ha.helpers.helpers import ( cut_network_from_unit, - endpoint_in_sentinels, get_sans_from_certificate, get_unit_name_from_primary_ip, hostname_from_unit, + is_endpoint_in_sentinels, is_unit_reachable, lxd_get_controller_hostname, restore_network_to_unit, @@ -68,10 +68,10 @@ def test_build_and_deploy( @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) -@pytest.mark.parametrize("change_ip", [True, False], ids=["change_ip", "no_change_ip"]) +@pytest.mark.parametrize("ip_change", [True, False], ids=["ip_change", "no_ip_change"]) async def test_network_cut_primary( # noqa: C901 tls_enabled: bool, - change_ip: bool, + ip_change: bool, juju: jubilant.Juju, substrate: Substrate, chaos_mesh, @@ -79,7 +79,7 @@ async def test_network_cut_primary( # noqa: C901 c_writes_async_clean, ) -> None: """Cut the network to the primary unit and verify that a new primary is elected.""" - if change_ip and substrate == Substrate.K8S: + if ip_change and substrate == Substrate.K8S: pytest.skip("Changing IP is not applicable for k8s substrate.") download_client_certificate_from_unit(juju, APP_NAME) @@ -90,32 +90,36 @@ async def test_network_cut_primary( # noqa: C901 c_writes.start() # Get the current primary unit - old_primary_ip = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) - assert old_primary_ip, "Failed to get primary endpoint from Juju status." + primary_ip = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) + assert primary_ip, "Failed to get primary endpoint from Juju status." # Cut the network to the primary unit - logger.info("Cutting network to primary unit at %s", old_primary_ip) - primary_unit_name = get_unit_name_from_primary_ip(juju, old_primary_ip, substrate) + logger.info("Cutting network to primary unit at %s", primary_ip) + primary_unit_name = get_unit_name_from_primary_ip(juju, primary_ip, substrate) download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) - old_primary_hostname = hostname_from_unit(juju, primary_unit_name) - machine_name = old_primary_hostname + primary_hostname = hostname_from_unit(juju, primary_unit_name) + machine_name = primary_hostname if substrate == Substrate.K8S: - old_primary_hostname = f"{old_primary_hostname}.{APP_NAME}-endpoints" + primary_hostname = f"{primary_hostname}.{APP_NAME}-endpoints" - old_primary_endpoint = old_primary_ip if substrate == Substrate.VM else old_primary_hostname + primary_endpoint = primary_ip if substrate == Substrate.VM else primary_hostname - logger.info("Identified container name for primary unit: %s", old_primary_hostname) - cut_network_from_unit(substrate, juju.model, machine_name, change_ip=change_ip) + logger.info("Identified container name for primary unit: %s", primary_hostname) + cut_network_from_unit(substrate, juju.model, machine_name, ip_change=ip_change) # on K8s the controller is on a different namespace if substrate == Substrate.VM: controller_hostname = lxd_get_controller_hostname(juju) assert not is_unit_reachable( - juju, controller_hostname, old_primary_hostname, substrate, number_of_retries=3 + juju, + from_host=controller_hostname, + to_host=primary_hostname, + substrate=substrate, + number_of_retries=3, ), ( - f"Controller {controller_hostname} can still reach the primary unit {old_primary_hostname} after network cut." + f"Controller {controller_hostname} can still reach the primary unit {primary_hostname} after network cut." ) for unit in juju.status().apps[APP_NAME].units: @@ -124,18 +128,12 @@ async def test_network_cut_primary( # noqa: C901 assert not is_unit_reachable( juju, hostname_from_unit(juju, unit), - old_primary_hostname, + primary_hostname, substrate, number_of_retries=3, - ), ( - f"Unit {unit} can still reach the primary unit {old_primary_hostname} after network cut." - ) + ), f"Unit {unit} can still reach the primary unit {primary_hostname} after network cut." - logger.info( - "Network successfully cut to primary unit %s at %s. Verifying new primary election...", - primary_unit_name, - old_primary_ip, - ) + logger.info("Verifying new primary election...") new_primary_ip = None for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10)): @@ -147,15 +145,16 @@ async def test_network_cut_primary( # noqa: C901 logger.warning(f"Error getting primary IP after network cut: {e}") logger.info("Waiting for new primary to be elected...") - assert new_primary_ip and new_primary_ip != old_primary_ip, ( + assert new_primary_ip and new_primary_ip != primary_ip, ( "Primary IP did not change after cutting network to the primary unit." ) logger.info( "New primary IP after network cut: %s vs old primary IP: %s", new_primary_ip, - old_primary_ip, + primary_ip, ) + logger.info("Checking number of connected replicas after network cut...") # check replica number that it is down to NUM_UNITS - 2 number_of_replicas = await get_number_connected_replicas( hostnames=hostnames, @@ -168,26 +167,20 @@ async def test_network_cut_primary( # noqa: C901 ) logger.info( - "Verified that a new primary has been elected and is reachable at %s. Verifying that old primary endpoint is marked as down in sentinels of other units...", - new_primary_ip, + "Verifying that new primary endpoint is marked as down in sentinels list of other replicas..." ) for hostname in hostnames: - if hostname == old_primary_ip: + if hostname == primary_ip: continue - assert endpoint_in_sentinels( + assert is_endpoint_in_sentinels( juju, - old_primary_endpoint, - hostname, + endpoint=primary_endpoint, + hostname=hostname, status="s_down", tls_enabled=tls_enabled, ), ( f"The old primary endpoint should be marked as down in sentinels list of hostname {hostname} after network cut." ) - logger.info( - "Verified that old primary endpoint %s is marked as down in sentinels of hostname %s after network cut.", - old_primary_endpoint, - hostname, - ) await assert_continuous_writes_increasing( hostnames=hostnames, @@ -197,8 +190,8 @@ async def test_network_cut_primary( # noqa: C901 ) # restore network to the original primary unit - logger.info("Restoring network to original primary unit at %s", old_primary_hostname) - restore_network_to_unit(substrate, juju.model, machine_name, change_ip=change_ip) + logger.info("Restoring network to original primary unit at %s", primary_hostname) + restore_network_to_unit(substrate, juju.model, machine_name, ip_change=ip_change) juju.wait( lambda status: are_apps_active_and_agents_idle( status, APP_NAME, unit_count=NUM_UNITS, idle_period=30 @@ -207,35 +200,35 @@ async def test_network_cut_primary( # noqa: C901 c_writes.update() logger.info( - "Network restored to original primary unit %s. Verifying that all units can reach the original primary unit at %s...", - primary_unit_name, - old_primary_hostname, + "Verifying that all units can reach the original primary unit at %s...", + primary_hostname, ) for unit in juju.status().apps[APP_NAME].units: if unit == primary_unit_name: continue assert is_unit_reachable( - juju, hostname_from_unit(juju, unit), old_primary_hostname, substrate + juju, + from_host=hostname_from_unit(juju, unit), + to_host=primary_hostname, + substrate=substrate, ), ( - f"Unit {unit} cannot reach the original primary unit {old_primary_hostname} after network restoration." - ) - logger.info( - "Unit %s can reach the original primary unit %s after network restoration.", - unit, - old_primary_hostname, + f"Unit {unit} cannot reach the original primary unit {primary_hostname} after network restoration." ) download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) new_unit_ip = get_ip_from_unit(juju, primary_unit_name) - # read ip from cert and check if is a different ip than before if change_ip is True - certificate_sans = get_sans_from_certificate("./client.pem") - if change_ip: - assert old_primary_ip not in certificate_sans["sans_ip"], ( - "The old IP should not be in SANs of client certificate after network cut and IP change." - ) - assert new_unit_ip in certificate_sans["sans_ip"], ( - "The new IP should be in SANs of client certificate after network cut and IP change." - ) + + # we do not use IPs in certificates for k8s, so no need to check SANs for IP changes + if substrate == Substrate.VM: + # read ip from cert and check if is a different ip than before if ip_change is True + certificate_sans = get_sans_from_certificate("./client.pem") + if ip_change: + assert primary_ip not in certificate_sans["sans_ip"], ( + "The old IP should not be in SANs of client certificate after network cut and IP change." + ) + assert new_unit_ip in certificate_sans["sans_ip"], ( + "The new IP should be in SANs of client certificate after network cut and IP change." + ) hostnames = get_cluster_hostnames(juju, APP_NAME) # check replica number that it is back to NUM_UNITS - 1 @@ -249,35 +242,28 @@ async def test_network_cut_primary( # noqa: C901 f"Expected {NUM_UNITS - 1} connected replicas after network restoration, got {number_of_replicas}." ) + logger.info("Verifying endpoint presence in sentinels") + for hostname in hostnames: if hostname == new_unit_ip: continue - if change_ip: - assert not endpoint_in_sentinels( - juju, old_primary_endpoint, hostname, tls_enabled=tls_enabled + if ip_change: + assert not is_endpoint_in_sentinels( + juju, primary_endpoint, hostname, tls_enabled=tls_enabled ), ( f"The old primary endpoint should not be present in sentinels list of hostname {hostname} after network cut and IP change." ) - assert endpoint_in_sentinels(juju, new_unit_ip, hostname, tls_enabled=tls_enabled), ( + assert is_endpoint_in_sentinels( + juju, new_unit_ip, hostname, tls_enabled=tls_enabled + ), ( f"The new primary IP should be present in sentinels list of hostname {hostname} after network cut and IP change." ) - logger.info( - "Verified that old primary endpoint %s is not in sentinels and new primary IP %s is in sentinels of hostname %s after network restoration with IP change.", - old_primary_endpoint, - new_unit_ip, - hostname, - ) else: - assert endpoint_in_sentinels( - juju, old_primary_endpoint, hostname, tls_enabled=tls_enabled + assert is_endpoint_in_sentinels( + juju, primary_endpoint, hostname, tls_enabled=tls_enabled ), ( f"The old primary endpoint should be present in sentinels list of hostname {hostname} after network cut and no IP change." ) - logger.info( - "Verified that old primary endpoint %s is in sentinels of hostname %s after network restoration with no IP change.", - old_primary_endpoint, - hostname, - ) await assert_continuous_writes_increasing( hostnames=hostnames, From 9eceeb5d415402b33760a83dc58de4b96cbd808b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 3 Apr 2026 14:49:14 +0000 Subject: [PATCH 195/282] stabilize test by retrying quorum --- tests/integration/ha/test_network_cut.py | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 4a92fca..e543fad 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -232,15 +232,18 @@ async def test_network_cut_primary( # noqa: C901 hostnames = get_cluster_hostnames(juju, APP_NAME) # check replica number that it is back to NUM_UNITS - 1 - number_of_replicas = await get_number_connected_replicas( - hostnames=hostnames, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=tls_enabled, - ) - assert number_of_replicas == NUM_UNITS - 1, ( - f"Expected {NUM_UNITS - 1} connected replicas after network restoration, got {number_of_replicas}." - ) + # sometimes it takes some time for the old primary to be marked as replica and for sentinels to update their status, so we add a retry here + for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10)): + with attempt: + number_of_replicas = await get_number_connected_replicas( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=tls_enabled, + ) + assert number_of_replicas == NUM_UNITS - 1, ( + f"Expected {NUM_UNITS - 1} connected replicas after network restoration, got {number_of_replicas}." + ) logger.info("Verifying endpoint presence in sentinels") From 3662194013a95e544413466813bf1c33d0c03cdf Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 3 Apr 2026 16:52:39 +0000 Subject: [PATCH 196/282] use insecure tls for tests --- tests/integration/helpers.py | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 1f2c104..a9bbc00 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -297,6 +297,10 @@ async def create_valkey_client( client_cert_pem=tls_cert if tls_enabled else None, client_key_pem=tls_key if tls_enabled else None, root_pem_cacerts=tls_ca_cert if tls_enabled else None, + # We only set FQDN in the certs the IP is not in the cert + # so we need to skip hostname verification + # we cannot use the hostname because the runner cannot resolve it + use_insecure_tls=True if tls_enabled else None, ) client_config = GlideClientConfiguration( From e572db59fac347825648aeaaeb49c3933113c9db Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Sun, 5 Apr 2026 19:11:21 +0000 Subject: [PATCH 197/282] add retry to stabilize test --- tests/integration/ha/test_network_cut.py | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index e543fad..edddee8 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -156,15 +156,18 @@ async def test_network_cut_primary( # noqa: C901 logger.info("Checking number of connected replicas after network cut...") # check replica number that it is down to NUM_UNITS - 2 - number_of_replicas = await get_number_connected_replicas( - hostnames=hostnames, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=tls_enabled, - ) - assert number_of_replicas == NUM_UNITS - 2, ( - f"Expected {NUM_UNITS - 2} connected replicas, got {number_of_replicas}." - ) + # retry in case cluster hasn't stabilized yet after primary cut and new primary election + for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10)): + with attempt: + number_of_replicas = await get_number_connected_replicas( + hostnames=hostnames, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=tls_enabled, + ) + assert number_of_replicas == NUM_UNITS - 2, ( + f"Expected {NUM_UNITS - 2} connected replicas, got {number_of_replicas}." + ) logger.info( "Verifying that new primary endpoint is marked as down in sentinels list of other replicas..." From ff770680459750cb26547c788e665fdfc5d8036f Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Sun, 5 Apr 2026 20:31:43 +0000 Subject: [PATCH 198/282] insecure tls in cw --- tests/integration/continuous_writes.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index b30c7da..6edb960 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -115,6 +115,7 @@ async def _create_glide_client(self, config: Optional[SimpleNamespace] = None) - client_cert_pem=tls_cert if conf.tls_enabled else None, client_key_pem=tls_key if conf.tls_enabled else None, root_pem_cacerts=tls_ca_cert if conf.tls_enabled else None, + use_insecure_tls=True if conf.tls_enabled else None, ) glide_config = GlideClientConfiguration( @@ -304,6 +305,7 @@ async def _make_client(conf: SimpleNamespace) -> GlideClient: client_cert_pem=tls_cert if conf.tls_enabled else None, client_key_pem=tls_key if conf.tls_enabled else None, root_pem_cacerts=tls_ca_cert if conf.tls_enabled else None, + use_insecure_tls=True if conf.tls_enabled else None, ) glide_config = GlideClientConfiguration( From fdc1133e604b4d5fd4f5cadbbfe6ae495d3fa392 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 7 Apr 2026 10:40:40 +0000 Subject: [PATCH 199/282] remove merge conflict --- src/events/tls.py | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/src/events/tls.py b/src/events/tls.py index 9666d56..7986a3c 100644 --- a/src/events/tls.py +++ b/src/events/tls.py @@ -365,17 +365,6 @@ def _enable_client_tls(self) -> None: self.charm.cluster_manager.reload_tls_settings(tls_config) self.charm.sentinel_manager.restart_service() - def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: - """Handle the `config-changed` event.""" - if ( - (secret_id := self.charm.config.get(TLS_CLIENT_PRIVATE_KEY_CONFIG)) - and (private_key := self.charm.tls_manager.read_and_validate_private_key(secret_id)) - and self.charm.unit.is_leader() - ): - self.charm.state.cluster.update({"tls_client_private_key": private_key.raw}) - if self.charm.state.client_tls_relation: - self.refresh_tls_certificates_event.emit() - def _orchestrate_ca_rotation(self) -> None: """Orchestrate the workflow when a TLS CA rotation has been initiated.""" match self.charm.state.unit_server.tls_ca_rotation_state: From 5ffa0ca80dad3fcf6f6c4cf8e0c111df5984816c Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 7 Apr 2026 10:40:55 +0000 Subject: [PATCH 200/282] fix bug in build sans --- src/managers/tls.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/managers/tls.py b/src/managers/tls.py index 3c75210..b523807 100644 --- a/src/managers/tls.py +++ b/src/managers/tls.py @@ -130,13 +130,13 @@ def build_sans_dns(self) -> frozenset[str]: extra_sans_config := self.state.config.get("certificate-extra-sans") ): extra_sans = [san.strip() for san in extra_sans_config.split(",")] - sans_dns = { + sans_dns |= { san.replace("{unit}", str(self.state.unit_server.unit_id)) for san in extra_sans if not self._is_ip_address(san) } - sans_dns.add(self.state.unit_server.model.hostname) + sans_dns.add(self.state.hostname) return frozenset(sans_dns) From f4ff587d71a9927922bc1cd980f48bb93ee45b1c Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 7 Apr 2026 10:41:03 +0000 Subject: [PATCH 201/282] fix unit test --- tests/unit/test_tls.py | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/tests/unit/test_tls.py b/tests/unit/test_tls.py index 39338b0..7ea8fe3 100644 --- a/tests/unit/test_tls.py +++ b/tests/unit/test_tls.py @@ -1252,13 +1252,10 @@ def test_set_extra_sans_config_option_no_update(cloud_spec): model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) - current_sans_value = ( - "X509v3 Subject Alternative Name: \n " - "DNS:myhostname, DNS:valkey-0.valkey-endpoints, " - "IP Address:127.1.1.1, IP Address:192.168.1.100, IP Address:192.0.2.0" - ) + current_sans_value = "X509v3 Subject Alternative Name: \n DNS:myhostname, DNS:valkey0, DNS:valkey-0.valkey-endpoints" with ( patch("workload_k8s.ValkeyK8sWorkload.exec", return_value=[current_sans_value]), + patch("workload_k8s.ValkeyK8sWorkload.exec", return_value=[current_sans_value]), ): ctx.run(ctx.on.config_changed(), state_in) # no RefreshTLSCertificatesEvent must be emitted From 30a4fd8fe2dd9590c7b31d275b043578153becc5 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 8 Apr 2026 08:41:07 +0000 Subject: [PATCH 202/282] change consistency to check same list values on all instances --- tests/integration/cw_helpers.py | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index be32214..0ceae88 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -3,6 +3,7 @@ # See LICENSE file for licensing details. import asyncio +import json import logging import subprocess from pathlib import Path @@ -72,19 +73,24 @@ def assert_continuous_writes_consistent( password: str, ) -> None: """Assert that the continuous writes are consistent.""" - last_written_value = None last_written_value = int(Path(WRITES_LAST_WRITTEN_VAL_PATH).read_text()) if not last_written_value: raise ValueError("Could not read last written value from file.") + values: list[int] | None = None + for endpoint in hostnames: - last_value = int(exec_valkey_cli(endpoint, username, password, f"LRANGE {KEY} 0 0").stdout) - count = int(exec_valkey_cli(endpoint, username, password, f"LLEN {KEY}").stdout) + current_values: list[int] = json.loads( + exec_valkey_cli(endpoint, username, password, f"LRANGE {KEY} 0 -1", json=True).stdout + ) + if values is None: + values = current_values + + last_value = int(current_values[0]) if current_values else None assert last_written_value == last_value, ( f"endpoint: {endpoint}, expected value: {last_written_value}, current value: {last_value}" ) - assert count == last_written_value + 1, ( - f"endpoint: {endpoint}, expected count: {last_written_value + 1}, current count: {count}" + assert values == current_values, ( + f"endpoint: {endpoint}, expected values: {values}, current values: {current_values}" ) - logger.info("Continuous writes are consistent on %s.", endpoint) From b8e93468cc29ae022f09d5a99e4b6c150c7eb632 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 8 Apr 2026 09:14:09 +0000 Subject: [PATCH 203/282] always wait and write the last successful value on disk instead of last attempt --- tests/integration/continuous_writes.py | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py index fe1c437..0a34337 100644 --- a/tests/integration/continuous_writes.py +++ b/tests/integration/continuous_writes.py @@ -329,6 +329,7 @@ async def with_client(conf: SimpleNamespace): await client.close() current_val = starting_number + last_written_value = starting_number config = initial_config proc_logger.info("Starting continuous async writes from %s", current_val) @@ -352,17 +353,18 @@ async def with_client(conf: SimpleNamespace): ): raise WriteFailedError("LPUSH returned 0/None") proc_logger.info("Length after write: %s", res) - await asyncio.sleep(in_between_sleep) + last_written_value = current_val except Exception as e: proc_logger.warning("Write failed at %s: %s", current_val, e) finally: + await asyncio.sleep(in_between_sleep) if event.is_set(): break current_val += 1 finally: - Path(ContinuousWrites.LAST_WRITTEN_VAL_PATH).write_text(str(current_val)) + Path(ContinuousWrites.LAST_WRITTEN_VAL_PATH).write_text(str(last_written_value)) proc_logger.info("Continuous writes process exiting.") From 40df36c9a96cf26459348aa026dcfc8f7ae66356 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 8 Apr 2026 10:19:29 +0000 Subject: [PATCH 204/282] fix get quorum --- tests/integration/helpers.py | 1 + 1 file changed, 1 insertion(+) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index cbcda00..09b222d 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -523,6 +523,7 @@ def get_quorum(juju: jubilant.Juju, unit_name: str) -> int: username=CharmUsers.SENTINEL_CHARM_ADMIN.value, password=get_password(juju, user=CharmUsers.SENTINEL_CHARM_ADMIN), command="SENTINEL primary primary", + sentinel=True, json=True, ) return int(json.loads(result.stdout)["quorum"]) From 3e4f2c4d195e02e1b66b25041542a1691799e051 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 8 Apr 2026 15:50:25 +0000 Subject: [PATCH 205/282] fix ip adding to certs in k8s --- src/managers/tls.py | 5 ++++- tests/unit/test_tls.py | 2 +- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/src/managers/tls.py b/src/managers/tls.py index cf1df3d..59b0512 100644 --- a/src/managers/tls.py +++ b/src/managers/tls.py @@ -98,7 +98,7 @@ def build_sans_ip(self) -> frozenset[str]: sans_ip = set() # Rely fully on FQDN on k8s - if not self.state.unit_server.model or self.state.substrate == "k8s": + if not self.state.unit_server.model: return frozenset(sans_ip) if self.extra_sans_config_is_valid() and ( @@ -107,6 +107,9 @@ def build_sans_ip(self) -> frozenset[str]: extra_sans = [san.strip() for san in extra_sans_config.split(",")] sans_ip = {san for san in extra_sans if self._is_ip_address(san)} + if self.state.substrate == "k8s": + return frozenset(sans_ip) + sans_ip.add(self.state.bind_address) if ingress_ip := self.state.ingress_address: diff --git a/tests/unit/test_tls.py b/tests/unit/test_tls.py index 276adf6..689b073 100644 --- a/tests/unit/test_tls.py +++ b/tests/unit/test_tls.py @@ -1258,7 +1258,7 @@ def test_set_extra_sans_config_option_no_update(cloud_spec): model=testing.Model(name="my-vm-model", type="lxd", cloud_spec=cloud_spec), ) - current_sans_value = "X509v3 Subject Alternative Name: \n DNS:myhostname, DNS:valkey0, DNS:valkey-0.valkey-endpoints" + current_sans_value = "X509v3 Subject Alternative Name: \n DNS:myhostname, DNS:valkey0, DNS:valkey-0.valkey-endpoints, IP Address:192.168.1.100" with ( patch("workload_k8s.ValkeyK8sWorkload.exec", return_value=[current_sans_value]), patch("workload_k8s.ValkeyK8sWorkload.exec", return_value=[current_sans_value]), From 76363a0390ed74adf7b5d2eed1b65bfb1502bee1 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 8 Apr 2026 15:56:51 +0000 Subject: [PATCH 206/282] fix fetching endpoint on k8s --- tests/integration/ha/test_network_cut.py | 15 +++++++++------ tests/integration/helpers.py | 18 ++++++++++++++++++ 2 files changed, 27 insertions(+), 6 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index edddee8..6a7b0a3 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -33,6 +33,7 @@ get_ip_from_unit, get_number_connected_replicas, get_password, + get_primary_endpoint, get_primary_ip, ) @@ -135,23 +136,25 @@ async def test_network_cut_primary( # noqa: C901 logger.info("Verifying new primary election...") - new_primary_ip = None + new_primary_endpoint = None for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10)): with attempt: try: - new_primary_ip = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) + new_primary_endpoint = get_primary_endpoint( + juju, APP_NAME, tls_enabled=tls_enabled + ) break except ValueError as e: logger.warning(f"Error getting primary IP after network cut: {e}") logger.info("Waiting for new primary to be elected...") - assert new_primary_ip and new_primary_ip != primary_ip, ( - "Primary IP did not change after cutting network to the primary unit." + assert new_primary_endpoint and new_primary_endpoint != primary_endpoint, ( + "Primary IP did not change after cutting network to the primary unit. Old primary IP: %s, new primary IP: %s" ) logger.info( "New primary IP after network cut: %s vs old primary IP: %s", - new_primary_ip, - primary_ip, + new_primary_endpoint, + primary_endpoint, ) logger.info("Checking number of connected replicas after network cut...") diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 09b222d..81b5dcf 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -403,6 +403,24 @@ def get_primary_ip(juju: jubilant.Juju, app: str, tls_enabled: bool = False) -> raise ValueError("No primary node found in the cluster") +def get_primary_endpoint(juju: jubilant.Juju, app: str, tls_enabled: bool = False) -> str: + """Get the primary endpoint of the Valkey cluster. + + Returns: + The endpoint of the primary node. It will be the IP for VMs and the hostname for k8s. + """ + hostnames = get_cluster_hostnames(juju, app) + result = exec_valkey_cli( + hostname=hostnames[0], + username=CharmUsers.SENTINEL_CHARM_ADMIN.value, + password=get_password(juju, user=CharmUsers.SENTINEL_CHARM_ADMIN), + command="SENTINEL get-master-addr-by-name primary", + sentinel=True, + tls_enabled=tls_enabled, + ) + return result.stdout.split()[0] + + def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN) -> str: """Retrieve the password for a given internal user from Juju secrets. From 4cc0004c12aee4df7f5d9127e92095fa351f53ec Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 8 Apr 2026 16:34:05 +0000 Subject: [PATCH 207/282] fix log --- tests/integration/ha/test_network_cut.py | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 6a7b0a3..a843b7d 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -149,7 +149,9 @@ async def test_network_cut_primary( # noqa: C901 logger.info("Waiting for new primary to be elected...") assert new_primary_endpoint and new_primary_endpoint != primary_endpoint, ( - "Primary IP did not change after cutting network to the primary unit. Old primary IP: %s, new primary IP: %s" + "Primary IP did not change after cutting network to the primary unit. %s vs old primary IP: %s", + new_primary_endpoint, + primary_endpoint, ) logger.info( "New primary IP after network cut: %s vs old primary IP: %s", From e2659a8be770ec4fe7fef9e2c30ffaae82fee738 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 8 Apr 2026 16:41:47 +0000 Subject: [PATCH 208/282] use ip and exlcude old primary --- tests/integration/ha/test_network_cut.py | 22 +++++++++++++--------- tests/integration/helpers.py | 24 ++++-------------------- 2 files changed, 17 insertions(+), 29 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index a843b7d..bc96b52 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -33,7 +33,6 @@ get_ip_from_unit, get_number_connected_replicas, get_password, - get_primary_endpoint, get_primary_ip, ) @@ -136,27 +135,32 @@ async def test_network_cut_primary( # noqa: C901 logger.info("Verifying new primary election...") - new_primary_endpoint = None + new_primary_ip = None for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10)): with attempt: try: - new_primary_endpoint = get_primary_endpoint( - juju, APP_NAME, tls_enabled=tls_enabled + # we exclude the old primary ip because on k8s the unit is reachable by ip + # from outside k8s and is forming its own cluster + new_primary_ip = get_primary_ip( + juju, + APP_NAME, + tls_enabled=tls_enabled, + hostnames=[ip for ip in hostnames if ip != primary_ip], ) break except ValueError as e: logger.warning(f"Error getting primary IP after network cut: {e}") logger.info("Waiting for new primary to be elected...") - assert new_primary_endpoint and new_primary_endpoint != primary_endpoint, ( + assert new_primary_ip and new_primary_ip != primary_ip, ( "Primary IP did not change after cutting network to the primary unit. %s vs old primary IP: %s", - new_primary_endpoint, - primary_endpoint, + new_primary_ip, + primary_ip, ) logger.info( "New primary IP after network cut: %s vs old primary IP: %s", - new_primary_endpoint, - primary_endpoint, + new_primary_ip, + primary_ip, ) logger.info("Checking number of connected replicas after network cut...") diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 81b5dcf..1471f21 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -378,13 +378,15 @@ def download_client_certificate_from_unit( juju.scp(f"{unit}:{tls_path}/ca_certs/{TLS_CA_FILE}", TLS_CA_FILE) -def get_primary_ip(juju: jubilant.Juju, app: str, tls_enabled: bool = False) -> str: +def get_primary_ip( + juju: jubilant.Juju, app: str, tls_enabled: bool = False, hostnames: list[str] | None = None +) -> str: """Get the primary node of the Valkey cluster. Returns: The IP address of the primary node. """ - hostnames = get_cluster_hostnames(juju, app) + hostnames = hostnames or get_cluster_hostnames(juju, app) for hostname in hostnames: try: replication_info = exec_valkey_cli( @@ -403,24 +405,6 @@ def get_primary_ip(juju: jubilant.Juju, app: str, tls_enabled: bool = False) -> raise ValueError("No primary node found in the cluster") -def get_primary_endpoint(juju: jubilant.Juju, app: str, tls_enabled: bool = False) -> str: - """Get the primary endpoint of the Valkey cluster. - - Returns: - The endpoint of the primary node. It will be the IP for VMs and the hostname for k8s. - """ - hostnames = get_cluster_hostnames(juju, app) - result = exec_valkey_cli( - hostname=hostnames[0], - username=CharmUsers.SENTINEL_CHARM_ADMIN.value, - password=get_password(juju, user=CharmUsers.SENTINEL_CHARM_ADMIN), - command="SENTINEL get-master-addr-by-name primary", - sentinel=True, - tls_enabled=tls_enabled, - ) - return result.stdout.split()[0] - - def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN) -> str: """Retrieve the password for a given internal user from Juju secrets. From 6de94423c21e97e8ea10edbc0ad421f286428169 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 8 Apr 2026 16:55:44 +0000 Subject: [PATCH 209/282] fix log --- tests/integration/ha/test_network_cut.py | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index bc96b52..05ad048 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -153,9 +153,7 @@ async def test_network_cut_primary( # noqa: C901 logger.info("Waiting for new primary to be elected...") assert new_primary_ip and new_primary_ip != primary_ip, ( - "Primary IP did not change after cutting network to the primary unit. %s vs old primary IP: %s", - new_primary_ip, - primary_ip, + f"Primary IP did not change after cutting network to the primary unit. {new_primary_ip} vs old primary IP: {primary_ip}" ) logger.info( "New primary IP after network cut: %s vs old primary IP: %s", From d6a3757a279e2408b6c95199b04f02f0ae6125da Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 8 Apr 2026 19:04:29 +0000 Subject: [PATCH 210/282] fix retrying for primary ip and reduce retry attempts --- tests/integration/ha/test_network_cut.py | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 05ad048..f1780ac 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -136,7 +136,8 @@ async def test_network_cut_primary( # noqa: C901 logger.info("Verifying new primary election...") new_primary_ip = None - for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10)): + # failover should happen after 30s + for attempt in Retrying(stop=stop_after_attempt(4), wait=wait_fixed(10)): with attempt: try: # we exclude the old primary ip because on k8s the unit is reachable by ip @@ -150,7 +151,8 @@ async def test_network_cut_primary( # noqa: C901 break except ValueError as e: logger.warning(f"Error getting primary IP after network cut: {e}") - logger.info("Waiting for new primary to be elected...") + logger.info("Waiting for new primary to be elected...") + raise assert new_primary_ip and new_primary_ip != primary_ip, ( f"Primary IP did not change after cutting network to the primary unit. {new_primary_ip} vs old primary IP: {primary_ip}" @@ -164,7 +166,7 @@ async def test_network_cut_primary( # noqa: C901 logger.info("Checking number of connected replicas after network cut...") # check replica number that it is down to NUM_UNITS - 2 # retry in case cluster hasn't stabilized yet after primary cut and new primary election - for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10)): + for attempt in Retrying(stop=stop_after_attempt(3), wait=wait_fixed(10)): with attempt: number_of_replicas = await get_number_connected_replicas( hostnames=hostnames, @@ -243,7 +245,7 @@ async def test_network_cut_primary( # noqa: C901 hostnames = get_cluster_hostnames(juju, APP_NAME) # check replica number that it is back to NUM_UNITS - 1 # sometimes it takes some time for the old primary to be marked as replica and for sentinels to update their status, so we add a retry here - for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10)): + for attempt in Retrying(stop=stop_after_attempt(3), wait=wait_fixed(10)): with attempt: number_of_replicas = await get_number_connected_replicas( hostnames=hostnames, From f4fad06c88daf3e779799c38d57df1d97b3e99fa Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 8 Apr 2026 19:34:15 +0000 Subject: [PATCH 211/282] reraise --- tests/integration/ha/test_network_cut.py | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index f1780ac..d34beb4 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -137,7 +137,7 @@ async def test_network_cut_primary( # noqa: C901 new_primary_ip = None # failover should happen after 30s - for attempt in Retrying(stop=stop_after_attempt(4), wait=wait_fixed(10)): + for attempt in Retrying(stop=stop_after_attempt(4), wait=wait_fixed(10), reraise=True): with attempt: try: # we exclude the old primary ip because on k8s the unit is reachable by ip @@ -166,7 +166,7 @@ async def test_network_cut_primary( # noqa: C901 logger.info("Checking number of connected replicas after network cut...") # check replica number that it is down to NUM_UNITS - 2 # retry in case cluster hasn't stabilized yet after primary cut and new primary election - for attempt in Retrying(stop=stop_after_attempt(3), wait=wait_fixed(10)): + for attempt in Retrying(stop=stop_after_attempt(3), wait=wait_fixed(10), reraise=True): with attempt: number_of_replicas = await get_number_connected_replicas( hostnames=hostnames, @@ -245,7 +245,7 @@ async def test_network_cut_primary( # noqa: C901 hostnames = get_cluster_hostnames(juju, APP_NAME) # check replica number that it is back to NUM_UNITS - 1 # sometimes it takes some time for the old primary to be marked as replica and for sentinels to update their status, so we add a retry here - for attempt in Retrying(stop=stop_after_attempt(3), wait=wait_fixed(10)): + for attempt in Retrying(stop=stop_after_attempt(3), wait=wait_fixed(10), reraise=True): with attempt: number_of_replicas = await get_number_connected_replicas( hostnames=hostnames, From 49e5f2298097001fd5fa58dd87870b37075e90a7 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 8 Apr 2026 19:48:20 +0000 Subject: [PATCH 212/282] revert back retries for quorum --- tests/integration/ha/test_network_cut.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index d34beb4..fe75231 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -166,7 +166,7 @@ async def test_network_cut_primary( # noqa: C901 logger.info("Checking number of connected replicas after network cut...") # check replica number that it is down to NUM_UNITS - 2 # retry in case cluster hasn't stabilized yet after primary cut and new primary election - for attempt in Retrying(stop=stop_after_attempt(3), wait=wait_fixed(10), reraise=True): + for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10), reraise=True): with attempt: number_of_replicas = await get_number_connected_replicas( hostnames=hostnames, @@ -245,7 +245,7 @@ async def test_network_cut_primary( # noqa: C901 hostnames = get_cluster_hostnames(juju, APP_NAME) # check replica number that it is back to NUM_UNITS - 1 # sometimes it takes some time for the old primary to be marked as replica and for sentinels to update their status, so we add a retry here - for attempt in Retrying(stop=stop_after_attempt(3), wait=wait_fixed(10), reraise=True): + for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10), reraise=True): with attempt: number_of_replicas = await get_number_connected_replicas( hostnames=hostnames, From 9739b6982e24a2349c5fbc2c41f37be19dbf209d Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 8 Apr 2026 20:32:03 +0000 Subject: [PATCH 213/282] tolerate delays in certificate update --- tests/integration/ha/test_network_cut.py | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index fe75231..69a9094 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -233,14 +233,18 @@ async def test_network_cut_primary( # noqa: C901 # we do not use IPs in certificates for k8s, so no need to check SANs for IP changes if substrate == Substrate.VM: # read ip from cert and check if is a different ip than before if ip_change is True - certificate_sans = get_sans_from_certificate("./client.pem") - if ip_change: - assert primary_ip not in certificate_sans["sans_ip"], ( - "The old IP should not be in SANs of client certificate after network cut and IP change." - ) - assert new_unit_ip in certificate_sans["sans_ip"], ( - "The new IP should be in SANs of client certificate after network cut and IP change." - ) + # tolerate delays in certificate update by retrying for up to 100 seconds with 10 second intervals + for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10), reraise=True): + with attempt: + download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) + certificate_sans = get_sans_from_certificate("./client.pem") + if ip_change: + assert primary_ip not in certificate_sans["sans_ip"], ( + "The old IP should not be in SANs of client certificate after network cut and IP change." + ) + assert new_unit_ip in certificate_sans["sans_ip"], ( + "The new IP should be in SANs of client certificate after network cut and IP change." + ) hostnames = get_cluster_hostnames(juju, APP_NAME) # check replica number that it is back to NUM_UNITS - 1 From fa04a11c00ad0365883747bedd2812d65ddef213 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Thu, 9 Apr 2026 14:36:38 +0000 Subject: [PATCH 214/282] use juju status ips and wait until they change --- tests/integration/ha/helpers/helpers.py | 58 +++++++++++++++++++++++- tests/integration/ha/test_network_cut.py | 14 ++++-- tests/integration/helpers.py | 15 +++--- 3 files changed, 73 insertions(+), 14 deletions(-) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index 923d393..b6418b1 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -16,10 +16,10 @@ import yaml from kubernetes import client, config from kubernetes.client.rest import ApiException -from tenacity import RetryError, Retrying, stop_after_attempt, wait_fixed +from tenacity import RetryError, Retrying, retry, stop_after_attempt, wait_fixed from literals import Substrate -from tests.integration.helpers import APP_NAME, get_sentinels +from tests.integration.helpers import APP_NAME, are_apps_active_and_agents_idle, get_sentinels logger = getLogger(__name__) @@ -429,3 +429,57 @@ def is_endpoint_in_sentinels( return False return True + + +def instance_ip(model: str, instance: str) -> str: + """Translate juju instance name to IP. + + Args: + model: The name of the model + instance: The name of the instance + + Returns: + The (str) IP address of the instance + """ + output = subprocess.check_output(f"juju machines --model {model}".split()) + + for line in output.decode("utf8").splitlines(): + if instance in line: + return line.split()[2] + + return "" + + +@retry(stop=stop_after_attempt(60), wait=wait_fixed(15)) +def wait_network_restore( + juju: jubilant.Juju, + substrate: Substrate, + model_name: str, + app_name: str, + hostname: str, + old_ip: str, + ip_change: bool = True, + unit_count: int | None = None, +) -> None: + """Wait until network is restored. + + Args: + juju: Juju client + substrate: The substrate the test is running on (VM or k8s) + model_name: The name of the model + app_name: The name of the application + hostname: The name of the instance + old_ip: old registered IP address + ip_change: Whether to check for IP change + unit_count: The expected number of units for the application (optional) + """ + if substrate == Substrate.VM and ip_change: + if instance_ip(model_name, hostname) == old_ip: + raise Exception("Network not restored, IP address has not changed yet.") + else: + # Wait for the network to be restored + juju.wait( + lambda status: are_apps_active_and_agents_idle( + status, app_name, unit_count=unit_count, idle_period=30 + ) + ) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 69a9094..be2c2d1 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -20,6 +20,7 @@ is_unit_reachable, lxd_get_controller_hostname, restore_network_to_unit, + wait_network_restore, ) from tests.integration.helpers import ( APP_NAME, @@ -204,10 +205,15 @@ async def test_network_cut_primary( # noqa: C901 # restore network to the original primary unit logger.info("Restoring network to original primary unit at %s", primary_hostname) restore_network_to_unit(substrate, juju.model, machine_name, ip_change=ip_change) - juju.wait( - lambda status: are_apps_active_and_agents_idle( - status, APP_NAME, unit_count=NUM_UNITS, idle_period=30 - ) + wait_network_restore( + juju=juju, + substrate=substrate, + model_name=juju.model, + app_name=APP_NAME, + hostname=primary_hostname, + old_ip=primary_ip, + ip_change=ip_change, + unit_count=NUM_UNITS, ) c_writes.update() diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 1471f21..506e9ba 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -239,14 +239,13 @@ def get_cluster_hostnames(juju: jubilant.Juju, app_name: str) -> list[str]: Returns: A list of hostnames for all units in the Valkey application. """ - # returns the real ip addresses even if they are not updated on juju's status - ips = [] - for unit in juju.status().get_units(app_name): - try: - ips.append(juju.exec("unit-get private-address", unit=unit, wait=5).stdout.strip()) - except TimeoutError as e: - logger.warning(f"Failed to get private address for {unit}: {e}") - return ips + status = juju.status() + model_info = juju.show_model() + + if model_info.type == "kubernetes": + return [unit.address for unit in status.get_units(app_name).values()] + + return [unit.public_address for unit in status.get_units(app_name).values()] def get_secret_by_label(juju: jubilant.Juju, label: str) -> dict[str, str]: From 6a34fd828c2ef2f5d811a7fd625da53513b90904 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 10 Apr 2026 09:29:56 +0000 Subject: [PATCH 215/282] add init charm for baseline --- .github/workflows/ci.yaml | 1 + .../clients/requirer-charm/.gitignore | 9 + .../clients/requirer-charm/charmcraft.yaml | 114 + .../clients/requirer-charm/constraints.txt | 2 + .../data_platform_libs/v0/data_interfaces.py | 5782 +++++++++++++++++ .../clients/requirer-charm/metadata.yaml | 10 + .../clients/requirer-charm/poetry.lock | 684 ++ .../clients/requirer-charm/pyproject.toml | 16 + .../clients/requirer-charm/src/charm.py | 292 + .../clients/requirer-charm/src/client.py | 79 + 10 files changed, 6989 insertions(+) create mode 100644 tests/integration/clients/requirer-charm/.gitignore create mode 100644 tests/integration/clients/requirer-charm/charmcraft.yaml create mode 100644 tests/integration/clients/requirer-charm/constraints.txt create mode 100644 tests/integration/clients/requirer-charm/lib/charms/data_platform_libs/v0/data_interfaces.py create mode 100644 tests/integration/clients/requirer-charm/metadata.yaml create mode 100644 tests/integration/clients/requirer-charm/poetry.lock create mode 100644 tests/integration/clients/requirer-charm/pyproject.toml create mode 100755 tests/integration/clients/requirer-charm/src/charm.py create mode 100644 tests/integration/clients/requirer-charm/src/client.py diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml index 7ed4ae0..60f341b 100644 --- a/.github/workflows/ci.yaml +++ b/.github/workflows/ci.yaml @@ -72,6 +72,7 @@ jobs: matrix: path: - . + - tests/integration/clients/requirer-charm name: Build charm uses: canonical/data-platform-workflows/.github/workflows/build_charm.yaml@v40.0.2 with: diff --git a/tests/integration/clients/requirer-charm/.gitignore b/tests/integration/clients/requirer-charm/.gitignore new file mode 100644 index 0000000..a26d707 --- /dev/null +++ b/tests/integration/clients/requirer-charm/.gitignore @@ -0,0 +1,9 @@ +venv/ +build/ +*.charm +.tox/ +.coverage +__pycache__/ +*.py[cod] +.idea +.vscode/ diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml new file mode 100644 index 0000000..9a44523 --- /dev/null +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -0,0 +1,114 @@ +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. + + +type: charm + +platforms: + ubuntu@24.04:amd64: + +parts: + # "poetry-deps" part name is a magic constant + # https://github.com/canonical/craft-parts/pull/901 + poetry-deps: + plugin: nil + build-packages: + - curl + override-build: | + # Use environment variable instead of `--break-system-packages` to avoid failing on older + # versions of pip that do not recognize `--break-system-packages` + # `--user` needed (in addition to `--break-system-packages`) for Ubuntu >=24.04 + PIP_BREAK_SYSTEM_PACKAGES=true python3 -m pip install --user --upgrade pip==26.0.1 # renovate: charmcraft-pip-latest + + # Use uv to install poetry so that a newer version of Python can be installed if needed by poetry + curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/uv/releases/download/0.10.0/uv-installer.sh | sh # renovate: charmcraft-uv-latest + # poetry 2.0.0 requires Python >=3.9 + if ! "$HOME/.local/bin/uv" python find '>=3.9' + then + # Use first Python version that is >=3.9 and available in an Ubuntu LTS + # (to reduce the number of Python versions we use) + "$HOME/.local/bin/uv" python install 3.10.12 # renovate: charmcraft-python-ubuntu-22.04 + fi + "$HOME/.local/bin/uv" tool install --no-python-downloads --python '>=3.9' poetry==2.3.2 --with poetry-plugin-export==1.10.0 # renovate: charmcraft-poetry-latest + + ln -sf "$HOME/.local/bin/poetry" /usr/local/bin/poetry + # "charm-poetry" part name is arbitrary; use for consistency + # Avoid using "charm" part name since that has special meaning to charmcraft + charm-poetry: + # By default, the `poetry` plugin creates/primes these directories: + # - lib, src + # (https://github.com/canonical/charmcraft/blob/9ff19c328e23b50cc06f04e8a5ad4835740badf4/charmcraft/parts/plugins/_poetry.py#L76-L78) + # - venv + # (https://github.com/canonical/charmcraft/blob/9ff19c328e23b50cc06f04e8a5ad4835740badf4/charmcraft/parts/plugins/_poetry.py#L95 + # https://github.com/canonical/craft-parts/blob/afb0d652eb330b6aaad4f40fbd6e5357d358de47/craft_parts/plugins/base.py#L270) + plugin: poetry + source: . + after: + - poetry-deps + poetry-export-extra-args: ['--without-hashes'] + build-packages: + - libffi-dev # Needed to build Python dependencies with Rust from source + - libssl-dev # Needed to build Python dependencies with Rust from source + - pkg-config # Needed to build Python dependencies with Rust from source + - libprotobuf-dev # Needed to build Valkey-glide + - protobuf-compiler # Needed to build Valkey-glide + - git + build-environment: + - PIP_BUILD_CONSTRAINT: constraints.txt # Workaround setuptools 82 + override-build: | + # Workaround for https://github.com/canonical/charmcraft/issues/2068 + # rustup used to install rustc and cargo, which are needed to build Python dependencies with Rust from source + if [[ "$CRAFT_PLATFORM" == ubuntu@20.04:* || "$CRAFT_PLATFORM" == ubuntu@22.04:* ]] + then + snap install rustup --classic + else + apt-get install rustup -y + fi + + # If Ubuntu version < 24.04, rustup was installed from snap instead of from the Ubuntu + # archive—which means the rustup version could be updated at any time. Print rustup version + # to build log to make changes to the snap's rustup version easier to track + rustup --version + + # rpds-py (Python package) >=0.19.0 requires rustc >=1.76, which is not available in the + # Ubuntu 22.04 archive. Install rustc and cargo using rustup instead of the Ubuntu archive + rustup set profile minimal + rustup default 1.93.0 # renovate: charmcraft-rust-latest + + craftctl default + # Include requirements.txt in *.charm artifact for easier debugging + cp requirements.txt "$CRAFT_PART_INSTALL/requirements.txt" + +actions: + set: + description: Set a key value pair in Valkey + params: + key: + description: The key to set in Valkey + type: string + value: + description: The value to set in Valkey + type: string + user: + description: The username to use + type: string + + get: + description: Get a key value pair from Valkey + params: + key: + description: The key to get from Valkey + type: string + user: + description: The username to use + type: string + + get-credentials: + description: Action for fetching all available credentials from relations. + +config: + options: + data-interfaces-version: + description: Version of data interfaces to use + type: int + default: 1 diff --git a/tests/integration/clients/requirer-charm/constraints.txt b/tests/integration/clients/requirer-charm/constraints.txt new file mode 100644 index 0000000..042c553 --- /dev/null +++ b/tests/integration/clients/requirer-charm/constraints.txt @@ -0,0 +1,2 @@ +setuptools < 82 +setuptools-scm < 10.0.2 \ No newline at end of file diff --git a/tests/integration/clients/requirer-charm/lib/charms/data_platform_libs/v0/data_interfaces.py b/tests/integration/clients/requirer-charm/lib/charms/data_platform_libs/v0/data_interfaces.py new file mode 100644 index 0000000..5be1d93 --- /dev/null +++ b/tests/integration/clients/requirer-charm/lib/charms/data_platform_libs/v0/data_interfaces.py @@ -0,0 +1,5782 @@ +# Copyright 2023 Canonical Ltd. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +r"""Library to manage the relation for the data-platform products. + +This library contains the Requires and Provides classes for handling the relation +between an application and multiple managed application supported by the data-team: +MySQL, Postgresql, MongoDB, Redis, Kafka, and Karapace. + +### Database (MySQL, Postgresql, MongoDB, and Redis) + +#### Requires Charm +This library is a uniform interface to a selection of common database +metadata, with added custom events that add convenience to database management, +and methods to consume the application related data. + + +Following an example of using the DatabaseCreatedEvent, in the context of the +application charm code: + +```python + +from charms.data_platform_libs.v0.data_interfaces import ( + DatabaseCreatedEvent, + DatabaseRequires, + DatabaseEntityCreatedEvent, +) + +class ApplicationCharm(CharmBase): + # Application charm that connects to database charms. + + def __init__(self, *args): + super().__init__(*args) + + # Charm events defined in the database requires charm library. + self.database = DatabaseRequires(self, relation_name="database", database_name="database") + self.framework.observe(self.database.on.database_created, self._on_database_created) + self.framework.observe(self.database.on.database_entity_created, self._on_database_entity_created) + + def _on_database_created(self, event: DatabaseCreatedEvent) -> None: + # Handle the created database + + # Create configuration file for app + config_file = self._render_app_config_file( + event.username, + event.password, + event.endpoints, + ) + + # Start application with rendered configuration + self._start_application(config_file) + + # Set active status + self.unit.status = ActiveStatus("received database credentials") + + def _on_database_entity_created(self, event: DatabaseEntityCreatedEvent) -> None: + # Handle the created entity + ... +``` + +As shown above, the library provides some custom events to handle specific situations, +which are listed below: + +- database_created: event emitted when the requested database is created. +- database_entity_created: event emitted when the requested entity is created. +- endpoints_changed: event emitted when the read/write endpoints of the database have changed. +- read_only_endpoints_changed: event emitted when the read-only endpoints of the database + have changed. Event is not triggered if read/write endpoints changed too. + +If it is needed to connect multiple database clusters to the same relation endpoint +the application charm can implement the same code as if it would connect to only +one database cluster (like the above code example). + +To differentiate multiple clusters connected to the same relation endpoint +the application charm can use the name of the remote application: + +```python + +def _on_database_created(self, event: DatabaseCreatedEvent) -> None: + # Get the remote app name of the cluster that triggered this event + cluster = event.relation.app.name +``` + +It is also possible to provide an alias for each different database cluster/relation. + +So, it is possible to differentiate the clusters in two ways. +The first is to use the remote application name, i.e., `event.relation.app.name`, as above. + +The second way is to use different event handlers to handle each cluster events. +The implementation would be something like the following code: + +```python + +from charms.data_platform_libs.v0.data_interfaces import ( + DatabaseCreatedEvent, + DatabaseRequires, +) + +class ApplicationCharm(CharmBase): + # Application charm that connects to database charms. + + def __init__(self, *args): + super().__init__(*args) + + # Define the cluster aliases and one handler for each cluster database created event. + self.database = DatabaseRequires( + self, + relation_name="database", + database_name="database", + relations_aliases = ["cluster1", "cluster2"], + ) + self.framework.observe( + self.database.on.cluster1_database_created, self._on_cluster1_database_created + ) + self.framework.observe( + self.database.on.cluster2_database_created, self._on_cluster2_database_created + ) + + def _on_cluster1_database_created(self, event: DatabaseCreatedEvent) -> None: + # Handle the created database on the cluster named cluster1 + + # Create configuration file for app + config_file = self._render_app_config_file( + event.username, + event.password, + event.endpoints, + ) + ... + + def _on_cluster2_database_created(self, event: DatabaseCreatedEvent) -> None: + # Handle the created database on the cluster named cluster2 + + # Create configuration file for app + config_file = self._render_app_config_file( + event.username, + event.password, + event.endpoints, + ) + ... +``` + +When it's needed to check whether a plugin (extension) is enabled on the PostgreSQL +charm, you can use the is_postgresql_plugin_enabled method. To use that, you need to +add the following dependency to your charmcraft.yaml file: + +```yaml + +parts: + charm: + charm-binary-python-packages: + - psycopg[binary] +``` + +### Provider Charm + +Following an example of using the DatabaseRequestedEvent, in the context of the +database charm code: + +```python +from charms.data_platform_libs.v0.data_interfaces import DatabaseProvides + +class SampleCharm(CharmBase): + + def __init__(self, *args): + super().__init__(*args) + # Charm events defined in the database provides charm library. + self.provided_database = DatabaseProvides(self, relation_name="database") + self.framework.observe(self.provided_database.on.database_requested, + self._on_database_requested) + # Database generic helper + self.database = DatabaseHelper() + + def _on_database_requested(self, event: DatabaseRequestedEvent) -> None: + # Handle the event triggered by a new database requested in the relation + # Retrieve the database name using the charm library. + db_name = event.database + # generate a new user credential + username = self.database.generate_user() + password = self.database.generate_password() + # set the credentials for the relation + self.provided_database.set_credentials(event.relation.id, username, password) + # set other variables for the relation event.set_tls("False") +``` + +As shown above, the library provides a custom event (database_requested) to handle +the situation when an application charm requests a new database to be created. +It's preferred to subscribe to this event instead of relation changed event to avoid +creating a new database when other information other than a database name is +exchanged in the relation databag. + +### Kafka + +This library is the interface to use and interact with the Kafka charm. This library contains +custom events that add convenience to manage Kafka, and provides methods to consume the +application related data. + +#### Requirer Charm + +```python + +from charms.data_platform_libs.v0.data_interfaces import ( + BootstrapServerChangedEvent, + KafkaRequires, + TopicCreatedEvent, + TopicEntityCreatedEvent, +) + +class ApplicationCharm(CharmBase): + + def __init__(self, *args): + super().__init__(*args) + self.kafka = KafkaRequires(self, "kafka_client", "test-topic") + self.framework.observe( + self.kafka.on.bootstrap_server_changed, self._on_kafka_bootstrap_server_changed + ) + self.framework.observe( + self.kafka.on.topic_created, self._on_kafka_topic_created + ) + self.framework.observe( + self.kafka.on.topic_entity_created, self._on_kafka_topic_entity_created + ) + + def _on_kafka_bootstrap_server_changed(self, event: BootstrapServerChangedEvent): + # Event triggered when a bootstrap server was changed for this application + + new_bootstrap_server = event.bootstrap_server + ... + + def _on_kafka_topic_created(self, event: TopicCreatedEvent): + # Event triggered when a topic was created for this application + username = event.username + password = event.password + tls = event.tls + tls_ca= event.tls_ca + bootstrap_server event.bootstrap_server + consumer_group_prefic = event.consumer_group_prefix + zookeeper_uris = event.zookeeper_uris + ... + + def _on_kafka_topic_entity_created(self, event: TopicEntityCreatedEvent): + # Event triggered when an entity was created for this application + ... +``` + +As shown above, the library provides some custom events to handle specific situations, +which are listed below: + +- topic_created: event emitted when the requested topic is created. +- bootstrap_server_changed: event emitted when the bootstrap server have changed. +- credential_changed: event emitted when the credentials of Kafka changed. + +### Provider Charm + +Following the previous example, this is an example of the provider charm. + +```python +class SampleCharm(CharmBase): + +from charms.data_platform_libs.v0.data_interfaces import ( + KafkaProvides, + TopicRequestedEvent, +) + + def __init__(self, *args): + super().__init__(*args) + + # Default charm events. + self.framework.observe(self.on.start, self._on_start) + + # Charm events defined in the Kafka Provides charm library. + self.kafka_provider = KafkaProvides(self, relation_name="kafka_client") + self.framework.observe(self.kafka_provider.on.topic_requested, self._on_topic_requested) + self.framework.observe(self.kafka_provider.on.topic_entity_requested, self._on_entity_requested) + # Kafka generic helper + self.kafka = KafkaHelper() + + def _on_topic_requested(self, event: TopicRequestedEvent): + # Handle the on_topic_requested event. + + topic = event.topic + relation_id = event.relation.id + # set connection info in the databag relation + self.kafka_provider.set_bootstrap_server(relation_id, self.kafka.get_bootstrap_server()) + self.kafka_provider.set_credentials(relation_id, username=username, password=password) + self.kafka_provider.set_consumer_group_prefix(relation_id, ...) + self.kafka_provider.set_tls(relation_id, "False") + self.kafka_provider.set_zookeeper_uris(relation_id, ...) + + def _on_entity_requested(self, event: EntityRequestedEvent): + # Handle the on_topic_entity_requested event. + ... +``` +As shown above, the library provides a custom event (topic_requested) to handle +the situation when an application charm requests a new topic to be created. +It is preferred to subscribe to this event instead of relation changed event to avoid +creating a new topic when other information other than a topic name is +exchanged in the relation databag. + +### Karapace + +This library is the interface to use and interact with the Karapace charm. This library contains +custom events that add convenience to manage Karapace, and provides methods to consume the +application related data. + +#### Requirer Charm + +```python + +from charms.data_platform_libs.v0.data_interfaces import ( + EndpointsChangedEvent, + KarapaceRequires, + SubjectAllowedEvent, +) + +class ApplicationCharm(CharmBase): + + def __init__(self, *args): + super().__init__(*args) + self.karapace = KarapaceRequires(self, relation_name="karapace_client", subject="test-subject") + self.framework.observe( + self.karapace.on.server_changed, self._on_karapace_server_changed + ) + self.framework.observe( + self.karapace.on.subject_allowed, self._on_karapace_subject_allowed + ) + self.framework.observe( + self.karapace.on.subject_entity_created, self._on_subject_entity_created + ) + + + def _on_karapace_server_changed(self, event: EndpointsChangedEvent): + # Event triggered when a server endpoint was changed for this application + new_server = event.endpoints + ... + + def _on_karapace_subject_allowed(self, event: SubjectAllowedEvent): + # Event triggered when a subject was allowed for this application + username = event.username + password = event.password + tls = event.tls + endpoints = event.endpoints + ... + + def _on_subject_entity_created(self, event: SubjectEntityCreatedEvent): + # Event triggered when a subject entity was created this application + entity_name = event.entity_name + entity_password = event.entity_password + ... +``` + +As shown above, the library provides some custom events to handle specific situations, +which are listed below: + +- subject_allowed: event emitted when the requested subject is allowed. +- server_changed: event emitted when the server endpoints have changed. + +#### Provider Charm + +Following the previous example, this is an example of the provider charm. + +```python +class SampleCharm(CharmBase): + +from charms.data_platform_libs.v0.data_interfaces import ( + KarapaceProvides, + SubjectRequestedEvent, +) + + def __init__(self, *args): + super().__init__(*args) + + # Default charm events. + self.framework.observe(self.on.start, self._on_start) + + # Charm events defined in the Karapace Provides charm library. + self.karapace_provider = KarapaceProvides(self, relation_name="karapace_client") + self.framework.observe(self.karapace_provider.on.subject_requested, self._on_subject_requested) + # Karapace generic helper + self.karapace = KarapaceHelper() + + def _on_subject_requested(self, event: SubjectRequestedEvent): + # Handle the on_subject_requested event. + + subject = event.subject + relation_id = event.relation.id + # set connection info in the databag relation + self.karapace_provider.set_endpoint(relation_id, self.karapace.get_endpoint()) + self.karapace_provider.set_credentials(relation_id, username=username, password=password) + self.karapace_provider.set_tls(relation_id, "False") +``` + +As shown above, the library provides a custom event (subject_requested) to handle +the situation when an application charm requests a new subject to be created. +It is preferred to subscribe to this event instead of relation changed event to avoid +creating a new subject when other information other than a subject name is +exchanged in the relation databag. +""" + +import copy +import json +import logging +from abc import ABC, abstractmethod +from collections import UserDict, namedtuple +from dataclasses import asdict, dataclass +from datetime import datetime +from enum import Enum +from os import PathLike +from pathlib import Path +from typing import ( + Callable, + Dict, + Final, + ItemsView, + KeysView, + List, + Optional, + Set, + Tuple, + TypedDict, + Union, + ValuesView, + overload, +) + +from ops import JujuVersion, Model, Secret, SecretInfo, SecretNotFoundError +from ops.charm import ( + CharmBase, + CharmEvents, + RelationChangedEvent, + RelationCreatedEvent, + RelationEvent, + SecretChangedEvent, +) +from ops.framework import EventSource, Handle, Object +from ops.model import Application, ModelError, Relation, Unit + +# The unique Charmhub library identifier, never change it +LIBID = "6c3e6b6680d64e9c89e611d1a15f65be" + +# Increment this major API version when introducing breaking changes +LIBAPI = 0 + +# Increment this PATCH version before using `charmcraft publish-lib` or reset +# to 0 if you are raising the major API version +LIBPATCH = 58 + +PYDEPS = ["ops>=2.0.0"] + +# Starting from what LIBPATCH number to apply legacy solutions +# v0.17 was the last version without secrets +LEGACY_SUPPORT_FROM = 17 + +logger = logging.getLogger(__name__) + +Diff = namedtuple("Diff", "added changed deleted") +Diff.__doc__ = """ +A tuple for storing the diff between two data mappings. + +added - keys that were added +changed - keys that still exist but have new values +deleted - key that were deleted""" + +OptionalPathLike = Optional[Union[PathLike, str]] + +ENTITY_USER = "USER" +ENTITY_GROUP = "GROUP" + +PROV_SECRET_PREFIX = "secret-" +PROV_SECRET_FIELDS = "provided-secrets" +REQ_SECRET_FIELDS = "requested-secrets" +STATUS_FIELD = "status" +GROUP_MAPPING_FIELD = "secret_group_mapping" +GROUP_SEPARATOR = "@" + +MODEL_ERRORS = { + "not_leader": "this unit is not the leader", + "no_label_and_uri": "ERROR either URI or label should be used for getting an owned secret but not both", + "owner_no_refresh": "ERROR secret owner cannot use --refresh", +} + + +############################################################################## +# Exceptions +############################################################################## + + +class DataInterfacesError(Exception): + """Common ancestor for DataInterfaces related exceptions.""" + + +class SecretError(DataInterfacesError): + """Common ancestor for Secrets related exceptions.""" + + +class SecretAlreadyExistsError(SecretError): + """A secret that was to be added already exists.""" + + +class SecretsUnavailableError(SecretError): + """Secrets aren't yet available for Juju version used.""" + + +class SecretsIllegalUpdateError(SecretError): + """Secrets aren't yet available for Juju version used.""" + + +class IllegalOperationError(DataInterfacesError): + """To be used when an operation is not allowed to be performed.""" + + +class PrematureDataAccessError(DataInterfacesError): + """To be raised when the Relation Data may be accessed (written) before protocol init complete.""" + + +############################################################################## +# Global helpers / utilities +############################################################################## + +############################################################################## +# Databag handling and comparison methods +############################################################################## + + +def get_encoded_dict( + relation: Relation, member: Union[Unit, Application], field: str +) -> Optional[Dict[str, str]]: + """Retrieve and decode an encoded field from relation data.""" + data = json.loads(relation.data[member].get(field, "{}")) + if isinstance(data, dict): + return data + logger.error("Unexpected datatype for %s instead of dict.", str(data)) + + +def get_encoded_list( + relation: Relation, member: Union[Unit, Application], field: str +) -> Optional[List[str]]: + """Retrieve and decode an encoded field from relation data.""" + data = json.loads(relation.data[member].get(field, "[]")) + if isinstance(data, list): + return data + logger.error("Unexpected datatype for %s instead of list.", str(data)) + + +def set_encoded_field( + relation: Relation, + member: Union[Unit, Application], + field: str, + value: Union[str, list, Dict[str, str]], +) -> None: + """Set an encoded field from relation data.""" + relation.data[member].update({field: json.dumps(value)}) + + +def diff(event: RelationChangedEvent, bucket: Optional[Union[Unit, Application]]) -> Diff: + """Retrieves the diff of the data in the relation changed databag. + + Args: + event: relation changed event. + bucket: bucket of the databag (app or unit) + + Returns: + a Diff instance containing the added, deleted and changed + keys from the event relation databag. + """ + # Retrieve the old data from the data key in the application relation databag. + if not bucket: + return Diff([], [], []) + + old_data = get_encoded_dict(event.relation, bucket, "data") + + if not old_data: + old_data = {} + + # Retrieve the new data from the event relation databag. + new_data = ( + {key: value for key, value in event.relation.data[event.app].items() if key != "data"} + if event.app + else {} + ) + + # These are the keys that were added to the databag and triggered this event. + added = new_data.keys() - old_data.keys() # pyright: ignore [reportAssignmentType] + # These are the keys that were removed from the databag and triggered this event. + deleted = old_data.keys() - new_data.keys() # pyright: ignore [reportAssignmentType] + # These are the keys that already existed in the databag, + # but had their values changed. + changed = { + key + for key in old_data.keys() & new_data.keys() # pyright: ignore [reportAssignmentType] + if old_data[key] != new_data[key] # pyright: ignore [reportAssignmentType] + } + # Convert the new_data to a serializable format and save it for a next diff check. + set_encoded_field(event.relation, bucket, "data", new_data) + + # Return the diff with all possible changes. + return Diff(added, changed, deleted) + + +############################################################################## +# Module decorators +############################################################################## + + +def leader_only(f): + """Decorator to ensure that only leader can perform given operation.""" + + def wrapper(self, *args, **kwargs): + if self.component == self.local_app and not self.local_unit.is_leader(): + logger.error( + "This operation (%s()) can only be performed by the leader unit", f.__name__ + ) + return + return f(self, *args, **kwargs) + + wrapper.leader_only = True + return wrapper + + +def juju_secrets_only(f): + """Decorator to ensure that certain operations would be only executed on Juju3.""" + + def wrapper(self, *args, **kwargs): + if not self.secrets_enabled: + raise SecretsUnavailableError("Secrets unavailable on current Juju version") + return f(self, *args, **kwargs) + + return wrapper + + +def dynamic_secrets_only(f): + """Decorator to ensure that certain operations would be only executed when NO static secrets are defined.""" + + def wrapper(self, *args, **kwargs): + if self.static_secret_fields: + raise IllegalOperationError( + "Unsafe usage of statically and dynamically defined secrets, aborting." + ) + return f(self, *args, **kwargs) + + return wrapper + + +def either_static_or_dynamic_secrets(f): + """Decorator to ensure that static and dynamic secrets won't be used in parallel.""" + + def wrapper(self, *args, **kwargs): + if self.static_secret_fields and set(self.current_secret_fields) - set( + self.static_secret_fields + ): + raise IllegalOperationError( + "Unsafe usage of statically and dynamically defined secrets, aborting." + ) + return f(self, *args, **kwargs) + + return wrapper + + +def legacy_apply_from_version(version: int) -> Callable: + """Decorator to decide whether to apply a legacy function or not. + + Based on LEGACY_SUPPORT_FROM module variable value, the importer charm may only want + to apply legacy solutions starting from a specific LIBPATCH. + + NOTE: All 'legacy' functions have to be defined and called in a way that they return `None`. + This results in cleaner and more secure execution flows in case the function may be disabled. + This requirement implicitly means that legacy functions change the internal state strictly, + don't return information. + """ + + def decorator(f: Callable[..., None]): + """Signature is ensuring None return value.""" + f.legacy_version = version + + def wrapper(self, *args, **kwargs) -> None: + if version >= LEGACY_SUPPORT_FROM: + return f(self, *args, **kwargs) + + return wrapper + + return decorator + + +############################################################################## +# Helper classes +############################################################################## + + +class Scope(Enum): + """Peer relations scope.""" + + APP = "app" + UNIT = "unit" + + +class SecretGroup(str): + """Secret groups specific type.""" + + +@dataclass +class RelationStatus: + """Base data class for status propagation on charm relations.""" + + code: int + message: str + resolution: str + + @property + def is_informational(self) -> bool: + """Is this an informational status?""" + return self.code // 1000 == 1 + + @property + def is_transitory(self) -> bool: + """Is this a transitory status?""" + return self.code // 1000 == 4 + + @property + def is_fatal(self) -> bool: + """Is this a fatal status, requiring removing the relation?""" + return self.code // 1000 == 5 + + +class RelationStatusDict(TypedDict): + """Base type for dict representation of `RelationStatus` dataclass.""" + + code: int + message: str + resolution: str + + +class SecretGroupsAggregate(str): + """Secret groups with option to extend with additional constants.""" + + def __init__(self): + self.USER = SecretGroup("user") + self.TLS = SecretGroup("tls") + self.MTLS = SecretGroup("mtls") + self.ENTITY = SecretGroup("entity") + self.EXTRA = SecretGroup("extra") + + def __setattr__(self, name, value): + """Setting internal constants.""" + if name in self.__dict__: + raise RuntimeError("Can't set constant!") + else: + super().__setattr__(name, SecretGroup(value)) + + def groups(self) -> list: + """Return the list of stored SecretGroups.""" + return list(self.__dict__.values()) + + def get_group(self, group: str) -> Optional[SecretGroup]: + """If the input str translates to a group name, return that.""" + return SecretGroup(group) if group in self.groups() else None + + +SECRET_GROUPS = SecretGroupsAggregate() + + +class CachedSecret: + """Locally cache a secret. + + The data structure is precisely reusing/simulating as in the actual Secret Storage + """ + + KNOWN_MODEL_ERRORS = [MODEL_ERRORS["no_label_and_uri"], MODEL_ERRORS["owner_no_refresh"]] + + def __init__( + self, + model: Model, + component: Union[Application, Unit], + label: str, + secret_uri: Optional[str] = None, + legacy_labels: List[str] = [], + ): + self._secret_meta = None + self._secret_content = {} + self._secret_uri = secret_uri + self.label = label + self._model = model + self.component = component + self.legacy_labels = legacy_labels + self.current_label = None + + @property + def meta(self) -> Optional[Secret]: + """Getting cached secret meta-information.""" + if not self._secret_meta: + if not (self._secret_uri or self.label): + return + + try: + self._secret_meta = self._model.get_secret(label=self.label) + except SecretNotFoundError: + # Falling back to seeking for potential legacy labels + self._legacy_compat_find_secret_by_old_label() + + # If still not found, to be checked by URI, to be labelled with the proposed label + if not self._secret_meta and self._secret_uri: + self._secret_meta = self._model.get_secret(id=self._secret_uri, label=self.label) + return self._secret_meta + + ########################################################################## + # Backwards compatibility / Upgrades + ########################################################################## + # These functions are used to keep backwards compatibility on rolling upgrades + # Policy: + # All data is kept intact until the first write operation. (This allows a minimal + # grace period during which rollbacks are fully safe. For more info see the spec.) + # All data involves: + # - databag contents + # - secrets content + # - secret labels (!!!) + # Legacy functions must return None, and leave an equally consistent state whether + # they are executed or skipped (as a high enough versioned execution environment may + # not require so) + + # Compatibility + + @legacy_apply_from_version(34) + def _legacy_compat_find_secret_by_old_label(self) -> None: + """Compatibility function, allowing to find a secret by a legacy label. + + This functionality is typically needed when secret labels changed over an upgrade. + Until the first write operation, we need to maintain data as it was, including keeping + the old secret label. In order to keep track of the old label currently used to access + the secret, and additional 'current_label' field is being defined. + """ + for label in self.legacy_labels: + try: + self._secret_meta = self._model.get_secret(label=label) + except SecretNotFoundError: + pass + except ModelError as e: + # Permission denied can be raised if the secret exists but is not yet granted to us. + if "permission denied" in str(e): + return + raise + else: + if label != self.label: + self.current_label = label + return + + # Migrations + + @legacy_apply_from_version(34) + def _legacy_migration_to_new_label_if_needed(self) -> None: + """Helper function to re-create the secret with a different label. + + Juju does not provide a way to change secret labels. + Thus whenever moving from secrets version that involves secret label changes, + we "re-create" the existing secret, and attach the new label to the new + secret, to be used from then on. + + Note: we replace the old secret with a new one "in place", as we can't + easily switch the containing SecretCache structure to point to a new secret. + Instead we are changing the 'self' (CachedSecret) object to point to the + new instance. + """ + if not self.current_label or not (self.meta and self._secret_meta): + return + + # Create a new secret with the new label + content = self._secret_meta.get_content() + self._secret_uri = None + + # It will be nice to have the possibility to check if we are the owners of the secret... + try: + self._secret_meta = self.add_secret(content, label=self.label) + except ModelError as err: + if MODEL_ERRORS["not_leader"] not in str(err): + raise + if "permission denied" not in str(err): + raise + self.current_label = None + + ########################################################################## + # Public functions + ########################################################################## + + def add_secret( + self, + content: Dict[str, str], + relation: Optional[Relation] = None, + label: Optional[str] = None, + ) -> Secret: + """Create a new secret.""" + if self._secret_uri: + raise SecretAlreadyExistsError( + "Secret is already defined with uri %s", self._secret_uri + ) + + label = self.label if not label else label + + secret = self.component.add_secret(content, label=label) + if relation and relation.app != self._model.app: + # If it's not a peer relation, grant is to be applied + secret.grant(relation) + self._secret_uri = secret.id + self._secret_meta = secret + return self._secret_meta + + def get_content(self) -> Dict[str, str]: + """Getting cached secret content.""" + if not self._secret_content: + if self.meta: + try: + self._secret_content = self.meta.get_content(refresh=True) + except (ValueError, ModelError) as err: + # https://bugs.launchpad.net/juju/+bug/2042596 + # Only triggered when 'refresh' is set + if isinstance(err, ModelError) and not any( + msg in str(err) for msg in self.KNOWN_MODEL_ERRORS + ): + raise + # Due to: ValueError: Secret owner cannot use refresh=True + self._secret_content = self.meta.get_content() + return self._secret_content + + def set_content(self, content: Dict[str, str]) -> None: + """Setting cached secret content.""" + if not self.meta: + return + + # DPE-4182: do not create new revision if the content stay the same + if content == self.get_content(): + return + + if content: + self._legacy_migration_to_new_label_if_needed() + self.meta.set_content(content) + self._secret_content = content + else: + self.meta.remove_all_revisions() + + def get_info(self) -> Optional[SecretInfo]: + """Wrapper function to apply the corresponding call on the Secret object within CachedSecret if any.""" + if self.meta: + return self.meta.get_info() + + def remove(self) -> None: + """Remove secret.""" + if not self.meta: + raise SecretsUnavailableError("Non-existent secret was attempted to be removed.") + try: + self.meta.remove_all_revisions() + except SecretNotFoundError: + pass + self._secret_content = {} + self._secret_meta = None + self._secret_uri = None + + +class SecretCache: + """A data structure storing CachedSecret objects.""" + + def __init__(self, model: Model, component: Union[Application, Unit]): + self._model = model + self.component = component + self._secrets: Dict[str, CachedSecret] = {} + + def get( + self, label: str, uri: Optional[str] = None, legacy_labels: List[str] = [] + ) -> Optional[CachedSecret]: + """Getting a secret from Juju Secret store or cache.""" + if not self._secrets.get(label): + secret = CachedSecret( + self._model, self.component, label, uri, legacy_labels=legacy_labels + ) + if secret.meta: + self._secrets[label] = secret + return self._secrets.get(label) + + def add(self, label: str, content: Dict[str, str], relation: Relation) -> CachedSecret: + """Adding a secret to Juju Secret.""" + if self._secrets.get(label): + raise SecretAlreadyExistsError(f"Secret {label} already exists") + + secret = CachedSecret(self._model, self.component, label) + secret.add_secret(content, relation) + self._secrets[label] = secret + return self._secrets[label] + + def remove(self, label: str) -> None: + """Remove a secret from the cache.""" + if secret := self.get(label): + try: + secret.remove() + self._secrets.pop(label) + except (SecretsUnavailableError, KeyError): + pass + else: + return + logging.debug("Non-existing Juju Secret was attempted to be removed %s", label) + + +################################################################################ +# Relation Data base/abstract ancestors (i.e. parent classes) +################################################################################ + + +# Base Data + + +class DataDict(UserDict): + """Python Standard Library 'dict' - like representation of Relation Data.""" + + def __init__(self, relation_data: "Data", relation_id: int): + self.relation_data = relation_data + self.relation_id = relation_id + + @property + def data(self) -> Dict[str, str]: + """Return the full content of the Abstract Relation Data dictionary.""" + result = self.relation_data.fetch_my_relation_data([self.relation_id]) + try: + result_remote = self.relation_data.fetch_relation_data([self.relation_id]) + except NotImplementedError: + result_remote = {self.relation_id: {}} + if result: + result_remote[self.relation_id].update(result[self.relation_id]) + return result_remote.get(self.relation_id, {}) + + def __setitem__(self, key: str, item: str) -> None: + """Set an item of the Abstract Relation Data dictionary.""" + self.relation_data.update_relation_data(self.relation_id, {key: item}) + + def __getitem__(self, key: str) -> str: + """Get an item of the Abstract Relation Data dictionary.""" + result = None + + # Avoiding "leader_only" error when cross-charm non-leader unit, not to report useless error + if ( + not hasattr(self.relation_data.fetch_my_relation_field, "leader_only") + or self.relation_data.component != self.relation_data.local_app + or self.relation_data.local_unit.is_leader() + ): + result = self.relation_data.fetch_my_relation_field(self.relation_id, key) + + if not result: + try: + result = self.relation_data.fetch_relation_field(self.relation_id, key) + except NotImplementedError: + pass + + if not result: + raise KeyError + return result + + def __eq__(self, d: dict) -> bool: + """Equality.""" + return self.data == d + + def __repr__(self) -> str: + """String representation Abstract Relation Data dictionary.""" + return repr(self.data) + + def __len__(self) -> int: + """Length of the Abstract Relation Data dictionary.""" + return len(self.data) + + def __delitem__(self, key: str) -> None: + """Delete an item of the Abstract Relation Data dictionary.""" + self.relation_data.delete_relation_data(self.relation_id, [key]) + + def has_key(self, key: str) -> bool: + """Does the key exist in the Abstract Relation Data dictionary?""" + return key in self.data + + def update(self, items: Dict[str, str]): + """Update the Abstract Relation Data dictionary.""" + self.relation_data.update_relation_data(self.relation_id, items) + + def keys(self) -> KeysView[str]: + """Keys of the Abstract Relation Data dictionary.""" + return self.data.keys() + + def values(self) -> ValuesView[str]: + """Values of the Abstract Relation Data dictionary.""" + return self.data.values() + + def items(self) -> ItemsView[str, str]: + """Items of the Abstract Relation Data dictionary.""" + return self.data.items() + + def pop(self, item: str) -> str: + """Pop an item of the Abstract Relation Data dictionary.""" + result = self.relation_data.fetch_my_relation_field(self.relation_id, item) + if not result: + raise KeyError(f"Item {item} doesn't exist.") + self.relation_data.delete_relation_data(self.relation_id, [item]) + return result + + def __contains__(self, item: str) -> bool: + """Does the Abstract Relation Data dictionary contain item?""" + return item in self.data.values() + + def __iter__(self): + """Iterate through the Abstract Relation Data dictionary.""" + return iter(self.data) + + def get(self, key: str, default: Optional[str] = None) -> Optional[str]: + """Safely get an item of the Abstract Relation Data dictionary.""" + try: + if result := self[key]: + return result + except KeyError: + return default + + +class Data(ABC): + """Base relation data manipulation (abstract) class.""" + + SCOPE = Scope.APP + + # Local map to associate mappings with secrets potentially as a group + SECRET_LABEL_MAP = { + "username": SECRET_GROUPS.USER, + "password": SECRET_GROUPS.USER, + "uris": SECRET_GROUPS.USER, + "read-only-uris": SECRET_GROUPS.USER, + "tls": SECRET_GROUPS.TLS, + "tls-ca": SECRET_GROUPS.TLS, + "mtls-cert": SECRET_GROUPS.MTLS, + "entity-name": SECRET_GROUPS.ENTITY, + "entity-password": SECRET_GROUPS.ENTITY, + } + + SECRET_FIELDS = [] + + def __init__( + self, + model: Model, + relation_name: str, + ) -> None: + self._model = model + self.local_app = self._model.app + self.local_unit = self._model.unit + self.relation_name = relation_name + self._jujuversion = None + self.component = self.local_app if self.SCOPE == Scope.APP else self.local_unit + self.secrets = SecretCache(self._model, self.component) + self.data_component = None + self._local_secret_fields = [] + self._remote_secret_fields = list(self.SECRET_FIELDS) + + @property + def relations(self) -> List[Relation]: + """The list of Relation instances associated with this relation_name.""" + return self._model.relations[self.relation_name] + + @property + def secrets_enabled(self): + """Is this Juju version allowing for Secrets usage?""" + if not self._jujuversion: + self._jujuversion = JujuVersion.from_environ() + return self._jujuversion.has_secrets + + @property + def secret_label_map(self): + """Exposing secret-label map via a property -- could be overridden in descendants!""" + return self.SECRET_LABEL_MAP + + @property + def local_secret_fields(self) -> Optional[List[str]]: + """Local access to secrets field, in case they are being used.""" + if self.secrets_enabled: + return self._local_secret_fields + + @property + def remote_secret_fields(self) -> Optional[List[str]]: + """Local access to secrets field, in case they are being used.""" + if self.secrets_enabled: + return self._remote_secret_fields + + @property + def my_secret_groups(self) -> Optional[List[SecretGroup]]: + """Local access to secrets field, in case they are being used.""" + if self.secrets_enabled: + return [ + self.SECRET_LABEL_MAP[field] + for field in self._local_secret_fields + if field in self.SECRET_LABEL_MAP + ] + + # Mandatory overrides for internal/helper methods + + @juju_secrets_only + def _get_relation_secret( + self, relation_id: int, group_mapping: SecretGroup, relation_name: Optional[str] = None + ) -> Optional[CachedSecret]: + """Retrieve a Juju Secret that's been stored in the relation databag.""" + if not relation_name: + relation_name = self.relation_name + + label = self._generate_secret_label(relation_name, relation_id, group_mapping) + if secret := self.secrets.get(label): + return secret + + relation = self._model.get_relation(relation_name, relation_id) + if not relation: + return + + if secret_uri := self.get_secret_uri(relation, group_mapping): + return self.secrets.get(label, secret_uri) + + # Mandatory overrides for requirer and peer, implemented for Provider + # Requirer uses local component and switched keys + # _local_secret_fields -> PROV_SECRET_FIELDS + # _remote_secret_fields -> REQ_SECRET_FIELDS + # provider uses remote component and + # _local_secret_fields -> REQ_SECRET_FIELDS + # _remote_secret_fields -> PROV_SECRET_FIELDS + @abstractmethod + def _load_secrets_from_databag(self, relation: Relation) -> None: + """Load secrets from the databag.""" + raise NotImplementedError + + def _fetch_specific_relation_data( + self, relation: Relation, fields: Optional[List[str]] + ) -> Dict[str, str]: + """Fetch data available (directily or indirectly -- i.e. secrets) from the relation (remote app data).""" + if not relation.app: + return {} + self._load_secrets_from_databag(relation) + return self._fetch_relation_data_with_secrets( + relation.app, self.remote_secret_fields, relation, fields + ) + + def _fetch_my_specific_relation_data( + self, relation: Relation, fields: Optional[List[str]] + ) -> dict: + """Fetch our own relation data.""" + # load secrets + self._load_secrets_from_databag(relation) + return self._fetch_relation_data_with_secrets( + self.local_app, + self.local_secret_fields, + relation, + fields, + ) + + def _update_relation_data(self, relation: Relation, data: Dict[str, str]) -> None: + """Set values for fields not caring whether it's a secret or not.""" + self._load_secrets_from_databag(relation) + + _, normal_fields = self._process_secret_fields( + relation, + self.local_secret_fields, + list(data), + self._add_or_update_relation_secrets, + data=data, + ) + + normal_content = {k: v for k, v in data.items() if k in normal_fields} + self._update_relation_data_without_secrets(self.local_app, relation, normal_content) + + def _add_or_update_relation_secrets( + self, + relation: Relation, + group: SecretGroup, + secret_fields: Set[str], + data: Dict[str, str], + uri_to_databag=True, + ) -> bool: + """Update contents for Secret group. If the Secret doesn't exist, create it.""" + if self._get_relation_secret(relation.id, group): + return self._update_relation_secret(relation, group, secret_fields, data) + + return self._add_relation_secret(relation, group, secret_fields, data, uri_to_databag) + + @juju_secrets_only + def _add_relation_secret( + self, + relation: Relation, + group_mapping: SecretGroup, + secret_fields: Set[str], + data: Dict[str, str], + uri_to_databag=True, + ) -> bool: + """Add a new Juju Secret that will be registered in the relation databag.""" + if uri_to_databag and self.get_secret_uri(relation, group_mapping): + logging.error("Secret for relation %s already exists, not adding again", relation.id) + return False + + content = self._content_for_secret_group(data, secret_fields, group_mapping) + + label = self._generate_secret_label(self.relation_name, relation.id, group_mapping) + secret = self.secrets.add(label, content, relation) + + if uri_to_databag: + # According to lint we may not have a Secret ID + if not secret.meta or not secret.meta.id: + logging.error("Secret is missing Secret ID") + raise SecretError("Secret added but is missing Secret ID") + + self.set_secret_uri(relation, group_mapping, secret.meta.id) + + # Return the content that was added + return True + + @juju_secrets_only + def _update_relation_secret( + self, + relation: Relation, + group_mapping: SecretGroup, + secret_fields: Set[str], + data: Dict[str, str], + ) -> bool: + """Update the contents of an existing Juju Secret, referred in the relation databag.""" + secret = self._get_relation_secret(relation.id, group_mapping) + + if not secret: + logging.error("Can't update secret for relation %s", relation.id) + return False + + content = self._content_for_secret_group(data, secret_fields, group_mapping) + + old_content = secret.get_content() + full_content = copy.deepcopy(old_content) + full_content.update(content) + secret.set_content(full_content) + + # Return True on success + return True + + @juju_secrets_only + def _delete_relation_secret( + self, relation: Relation, group: SecretGroup, secret_fields: List[str], fields: List[str] + ) -> bool: + """Update the contents of an existing Juju Secret, referred in the relation databag.""" + secret = self._get_relation_secret(relation.id, group) + + if not secret: + logging.error("Can't delete secret for relation %s", str(relation.id)) + return False + + old_content = secret.get_content() + new_content = copy.deepcopy(old_content) + for field in fields: + try: + new_content.pop(field) + except KeyError: + logging.debug( + "Non-existing secret was attempted to be removed %s, %s", + str(relation.id), + str(field), + ) + return False + + # Remove secret from the relation if it's fully gone + if not new_content: + field = self._generate_secret_field_name(group) + try: + relation.data[self.component].pop(field) + except KeyError: + pass + label = self._generate_secret_label(self.relation_name, relation.id, group) + self.secrets.remove(label) + else: + secret.set_content(new_content) + + # Return the content that was removed + return True + + def _delete_relation_data(self, relation: Relation, fields: List[str]) -> None: + """Delete data available (directily or indirectly -- i.e. secrets) from the relation for owner/this_app.""" + if relation.app: + self._load_secrets_from_databag(relation) + + _, normal_fields = self._process_secret_fields( + relation, self.local_secret_fields, fields, self._delete_relation_secret, fields=fields + ) + self._delete_relation_data_without_secrets(self.local_app, relation, list(normal_fields)) + + def _register_secret_to_relation( + self, relation_name: str, relation_id: int, secret_id: str, group: SecretGroup + ): + """Fetch secrets and apply local label on them. + + [MAGIC HERE] + If we fetch a secret using get_secret(id=, label=), + then will be "stuck" on the Secret object, whenever it may + appear (i.e. as an event attribute, or fetched manually) on future occasions. + + This will allow us to uniquely identify the secret on Provider side (typically on + 'secret-changed' events), and map it to the corresponding relation. + """ + label = self._generate_secret_label(relation_name, relation_id, group) + + # Fetching the Secret's meta information ensuring that it's locally getting registered with + CachedSecret(self._model, self.component, label, secret_id).meta + + def _register_secrets_to_relation(self, relation: Relation, params_name_list: List[str]): + """Make sure that secrets of the provided list are locally 'registered' from the databag. + + More on 'locally registered' magic is described in _register_secret_to_relation() method + """ + if not relation.app: + return + + for group in SECRET_GROUPS.groups(): + secret_field = self._generate_secret_field_name(group) + if secret_field in params_name_list and ( + secret_uri := self.get_secret_uri(relation, group) + ): + self._register_secret_to_relation(relation.name, relation.id, secret_uri, group) + + # Optional overrides + + def _legacy_apply_on_fetch(self) -> None: + """This function should provide a list of compatibility functions to be applied when fetching (legacy) data.""" + pass + + def _legacy_apply_on_update(self, fields: List[str]) -> None: + """This function should provide a list of compatibility functions to be applied when writing data. + + Since data may be at a legacy version, migration may be mandatory. + """ + pass + + def _legacy_apply_on_delete(self, fields: List[str]) -> None: + """This function should provide a list of compatibility functions to be applied when deleting (legacy) data.""" + pass + + # Internal helper methods + + @staticmethod + def _is_secret_field(field: str) -> bool: + """Is the field in question a secret reference (URI) field or not?""" + return field.startswith(PROV_SECRET_PREFIX) + + @staticmethod + def _generate_secret_label( + relation_name: str, relation_id: int, group_mapping: SecretGroup + ) -> str: + """Generate unique group_mappings for secrets within a relation context.""" + return f"{relation_name}.{relation_id}.{group_mapping}.secret" + + def _generate_secret_field_name(self, group_mapping: SecretGroup) -> str: + """Generate unique group_mappings for secrets within a relation context.""" + return f"{PROV_SECRET_PREFIX}{group_mapping}" + + def _relation_from_secret_label(self, secret_label: str) -> Optional[Relation]: + """Retrieve the relation that belongs to a secret label.""" + contents = secret_label.split(".") + + if not (contents and len(contents) >= 3): + return + + contents.pop() # ".secret" at the end + contents.pop() # Group mapping + relation_id = contents.pop() + try: + relation_id = int(relation_id) + except ValueError: + return + + # In case '.' character appeared in relation name + relation_name = ".".join(contents) + + try: + return self.get_relation(relation_name, relation_id) + except ModelError: + return + + def _group_secret_fields(self, secret_fields: List[str]) -> Dict[SecretGroup, List[str]]: + """Helper function to arrange secret mappings under their group. + + NOTE: All unrecognized items end up in the 'extra' secret bucket. + Make sure only secret fields are passed! + """ + secret_fieldnames_grouped = {} + for key in secret_fields: + if group := self.secret_label_map.get(key): + secret_fieldnames_grouped.setdefault(group, []).append(key) + else: + secret_fieldnames_grouped.setdefault(SECRET_GROUPS.EXTRA, []).append(key) + return secret_fieldnames_grouped + + def _get_group_secret_contents( + self, + relation: Relation, + group: SecretGroup, + secret_fields: Union[Set[str], List[str]] = [], + ) -> Dict[str, str]: + """Helper function to retrieve collective, requested contents of a secret.""" + if (secret := self._get_relation_secret(relation.id, group)) and ( + secret_data := secret.get_content() + ): + return { + k: v for k, v in secret_data.items() if not secret_fields or k in secret_fields + } + return {} + + def _content_for_secret_group( + self, content: Dict[str, str], secret_fields: Set[str], group_mapping: SecretGroup + ) -> Dict[str, str]: + """Select : pairs from input, that belong to this particular Secret group.""" + if group_mapping == SECRET_GROUPS.EXTRA: + return { + k: v + for k, v in content.items() + if k in secret_fields and k not in self.secret_label_map.keys() + } + + return { + k: v + for k, v in content.items() + if k in secret_fields and self.secret_label_map.get(k) == group_mapping + } + + @juju_secrets_only + def _get_relation_secret_data( + self, relation_id: int, group_mapping: SecretGroup, relation_name: Optional[str] = None + ) -> Optional[Dict[str, str]]: + """Retrieve contents of a Juju Secret that's been stored in the relation databag.""" + secret = self._get_relation_secret(relation_id, group_mapping, relation_name) + if secret: + return secret.get_content() + + # Core operations on Relation Fields manipulations (regardless whether the field is in the databag or in a secret) + # Internal functions to be called directly from transparent public interface functions (+closely related helpers) + + def _process_secret_fields( + self, + relation: Relation, + req_secret_fields: Optional[List[str]], + impacted_rel_fields: List[str], + operation: Callable, + *args, + **kwargs, + ) -> Tuple[Dict[str, str], Set[str]]: + """Isolate target secret fields of manipulation, and execute requested operation by Secret Group.""" + result = {} + + # If the relation started on a databag, we just stay on the databag + # (Rolling upgrades may result in a relation starting on databag, getting secrets enabled on-the-fly) + # self.local_app is sufficient to check (ignored if Requires, never has secrets -- works if Provider) + fallback_to_databag = ( + req_secret_fields + and (self.local_unit == self._model.unit and self.local_unit.is_leader()) + and set(req_secret_fields) & set(relation.data[self.component]) + ) + normal_fields = set(impacted_rel_fields) + if req_secret_fields and self.secrets_enabled and not fallback_to_databag: + normal_fields = normal_fields - set(req_secret_fields) + secret_fields = set(impacted_rel_fields) - set(normal_fields) + + secret_fieldnames_grouped = self._group_secret_fields(list(secret_fields)) + + for group in secret_fieldnames_grouped: + # operation() should return nothing when all goes well + if group_result := operation(relation, group, secret_fields, *args, **kwargs): + # If "meaningful" data was returned, we take it. (Some 'operation'-s only return success/failure.) + if isinstance(group_result, dict): + result.update(group_result) + else: + # If it wasn't found as a secret, let's give it a 2nd chance as "normal" field + # Needed when Juju3 Requires meets Juju2 Provider + normal_fields |= set(secret_fieldnames_grouped[group]) + return (result, normal_fields) + + def _fetch_relation_data_without_secrets( + self, component: Union[Application, Unit], relation: Relation, fields: Optional[List[str]] + ) -> Dict[str, str]: + """Fetching databag contents when no secrets are involved. + + Since the Provider's databag is the only one holding secrest, we can apply + a simplified workflow to read the Require's side's databag. + This is used typically when the Provider side wants to read the Requires side's data, + or when the Requires side may want to read its own data. + """ + if component not in relation.data or not relation.data[component]: + return {} + + if fields: + return { + k: relation.data[component][k] for k in fields if k in relation.data[component] + } + else: + return dict(relation.data[component]) + + def _fetch_relation_data_with_secrets( + self, + component: Union[Application, Unit], + req_secret_fields: Optional[List[str]], + relation: Relation, + fields: Optional[List[str]] = None, + ) -> Dict[str, str]: + """Fetching databag contents when secrets may be involved. + + This function has internal logic to resolve if a requested field may be "hidden" + within a Relation Secret, or directly available as a databag field. Typically + used to read the Provider side's databag (eigher by the Requires side, or by + Provider side itself). + """ + result = {} + normal_fields = [] + + if not fields: + if component not in relation.data: + return {} + + all_fields = list(relation.data[component].keys()) + normal_fields = [field for field in all_fields if not self._is_secret_field(field)] + fields = normal_fields + req_secret_fields if req_secret_fields else normal_fields + + if fields: + result, normal_fields = self._process_secret_fields( + relation, req_secret_fields, fields, self._get_group_secret_contents + ) + + # Processing "normal" fields. May include leftover from what we couldn't retrieve as a secret. + # (Typically when Juju3 Requires meets Juju2 Provider) + if normal_fields: + result.update( + self._fetch_relation_data_without_secrets(component, relation, list(normal_fields)) + ) + return result + + def _update_relation_data_without_secrets( + self, component: Union[Application, Unit], relation: Relation, data: Dict[str, str] + ) -> None: + """Updating databag contents when no secrets are involved.""" + if component not in relation.data or relation.data[component] is None: + return + + if relation: + relation.data[component].update(data) + + def _delete_relation_data_without_secrets( + self, component: Union[Application, Unit], relation: Relation, fields: List[str] + ) -> None: + """Remove databag fields 'fields' from Relation.""" + if component not in relation.data or relation.data[component] is None: + return + + for field in fields: + try: + relation.data[component].pop(field) + except KeyError: + logger.debug( + "Non-existing field '%s' was attempted to be removed from the databag (relation ID: %s)", + str(field), + str(relation.id), + ) + pass + + # Public interface methods + # Handling Relation Fields seamlessly, regardless if in databag or a Juju Secret + + def as_dict(self, relation_id: int) -> UserDict: + """Dict behavior representation of the Abstract Data.""" + return DataDict(self, relation_id) + + def get_relation(self, relation_name, relation_id) -> Relation: + """Safe way of retrieving a relation.""" + relation = self._model.get_relation(relation_name, relation_id) + + if not relation: + raise DataInterfacesError( + "Relation %s %s couldn't be retrieved", relation_name, relation_id + ) + + return relation + + def get_secret_uri(self, relation: Relation, group: SecretGroup) -> Optional[str]: + """Get the secret URI for the corresponding group.""" + secret_field = self._generate_secret_field_name(group) + # if the secret is not managed by this component, + # we need to fetch it from the other side + + # Fix for the linter + if self.my_secret_groups is None: + raise DataInterfacesError("Secrets are not enabled for this component") + component = self.component if group in self.my_secret_groups else relation.app + return relation.data[component].get(secret_field) + + def set_secret_uri(self, relation: Relation, group: SecretGroup, secret_uri: str) -> None: + """Set the secret URI for the corresponding group.""" + secret_field = self._generate_secret_field_name(group) + relation.data[self.component][secret_field] = secret_uri + + def fetch_relation_data( + self, + relation_ids: Optional[List[int]] = None, + fields: Optional[List[str]] = None, + relation_name: Optional[str] = None, + ) -> Dict[int, Dict[str, str]]: + """Retrieves data from relation. + + This function can be used to retrieve data from a relation + in the charm code when outside an event callback. + Function cannot be used in `*-relation-broken` events and will raise an exception. + + Returns: + a dict of the values stored in the relation data bag + for all relation instances (indexed by the relation ID). + """ + self._legacy_apply_on_fetch() + + if not relation_name: + relation_name = self.relation_name + + relations = [] + if relation_ids: + relations = [ + self.get_relation(relation_name, relation_id) for relation_id in relation_ids + ] + else: + relations = self.relations + + data = {} + for relation in relations: + if not relation_ids or (relation_ids and relation.id in relation_ids): + data[relation.id] = self._fetch_specific_relation_data(relation, fields) + return data + + def fetch_relation_field( + self, relation_id: int, field: str, relation_name: Optional[str] = None + ) -> Optional[str]: + """Get a single field from the relation data.""" + return ( + self.fetch_relation_data([relation_id], [field], relation_name) + .get(relation_id, {}) + .get(field) + ) + + def fetch_my_relation_data( + self, + relation_ids: Optional[List[int]] = None, + fields: Optional[List[str]] = None, + relation_name: Optional[str] = None, + ) -> Optional[Dict[int, Dict[str, str]]]: + """Fetch data of the 'owner' (or 'this app') side of the relation. + + NOTE: Since only the leader can read the relation's 'this_app'-side + Application databag, the functionality is limited to leaders + """ + self._legacy_apply_on_fetch() + + if not relation_name: + relation_name = self.relation_name + + relations = [] + if relation_ids: + relations = [ + self.get_relation(relation_name, relation_id) for relation_id in relation_ids + ] + else: + relations = self.relations + + data = {} + for relation in relations: + if not relation_ids or relation.id in relation_ids: + data[relation.id] = self._fetch_my_specific_relation_data(relation, fields) + return data + + def fetch_my_relation_field( + self, relation_id: int, field: str, relation_name: Optional[str] = None + ) -> Optional[str]: + """Get a single field from the relation data -- owner side. + + NOTE: Since only the leader can read the relation's 'this_app'-side + Application databag, the functionality is limited to leaders + """ + if relation_data := self.fetch_my_relation_data([relation_id], [field], relation_name): + return relation_data.get(relation_id, {}).get(field) + + @leader_only + def update_relation_data(self, relation_id: int, data: dict) -> None: + """Update the data within the relation.""" + self._legacy_apply_on_update(list(data.keys())) + + relation_name = self.relation_name + relation = self.get_relation(relation_name, relation_id) + return self._update_relation_data(relation, data) + + @leader_only + def delete_relation_data(self, relation_id: int, fields: List[str]) -> None: + """Remove field from the relation.""" + self._legacy_apply_on_delete(fields) + + relation_name = self.relation_name + relation = self.get_relation(relation_name, relation_id) + return self._delete_relation_data(relation, fields) + + +class EventHandlers(Object): + """Requires-side of the relation.""" + + def __init__(self, charm: CharmBase, relation_data: Data, unique_key: str = ""): + """Manager of base client relations.""" + if not unique_key: + unique_key = relation_data.relation_name + super().__init__(charm, unique_key) + + self.charm = charm + self.relation_data = relation_data + + self.framework.observe( + charm.on[self.relation_data.relation_name].relation_changed, + self._on_relation_changed_event, + ) + + self.framework.observe( + self.charm.on[relation_data.relation_name].relation_created, + self._on_relation_created_event, + ) + + self.framework.observe( + charm.on.secret_changed, + self._on_secret_changed_event, + ) + + # Event handlers + + def _on_relation_created_event(self, event: RelationCreatedEvent) -> None: + """Event emitted when the relation is created.""" + pass + + @abstractmethod + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the relation data has changed.""" + raise NotImplementedError + + @abstractmethod + def _on_secret_changed_event(self, event: SecretChangedEvent) -> None: + """Event emitted when the relation data has changed.""" + raise NotImplementedError + + def _diff(self, event: RelationChangedEvent) -> Diff: + """Retrieves the diff of the data in the relation changed databag. + + Args: + event: relation changed event. + + Returns: + a Diff instance containing the added, deleted and changed + keys from the event relation databag. + """ + return diff(event, self.relation_data.data_component) + + +# Base ProviderData and RequiresData + + +class ProviderData(Data): + """Base provides-side of the data products relation.""" + + RESOURCE_FIELD = "database" + + def __init__( + self, + model: Model, + relation_name: str, + status_schema_path: OptionalPathLike = None, + ) -> None: + super().__init__(model, relation_name) + self.data_component = self.local_app + self._local_secret_fields = [] + self._remote_secret_fields = list(self.SECRET_FIELDS) + self._status_schema = ( + {} if not status_schema_path else self._load_status_schema(Path(status_schema_path)) + ) + + def _load_status_schema(self, schema_path: Path) -> Dict[int, RelationStatus]: + """Load JSON schema defining status codes and their details. + + Args: + schema_path: JSON schema file path. + + Raises: + FileNotFoundError: If the provided path is invalid/inaccessible. + + Returns: + dict[int, RelationStatusDict]: Mapping of status code to RelationStatus data objects. + """ + if not schema_path.exists(): + raise FileNotFoundError(f"Can't locate status schema file: {schema_path}") + + content = json.load(open(schema_path, "r")) + + return {s["code"]: RelationStatus(**s) for s in content.get("statuses", [])} + + def _update_relation_data(self, relation: Relation, data: Dict[str, str]) -> None: + """Set values for fields not caring whether it's a secret or not.""" + keys = set(data.keys()) + if self.fetch_relation_field(relation.id, self.RESOURCE_FIELD) is None and ( + keys - {"endpoints", "read-only-endpoints", "replset"} + ): + raise PrematureDataAccessError( + "Premature access to relation data, update is forbidden before the connection is initialized." + ) + super()._update_relation_data(relation, data) + + # Public methods - "native" + + def set_credentials(self, relation_id: int, username: str, password: str) -> None: + """Set credentials. + + This function writes in the application data bag, therefore, + only the leader unit can call it. + + Args: + relation_id: the identifier for a particular relation. + username: user that was created. + password: password of the created user. + """ + self.update_relation_data(relation_id, {"username": username, "password": password}) + + def set_entity_credentials( + self, relation_id: int, entity_name: str, entity_password: Optional[str] = None + ) -> None: + """Set entity credentials. + + This function writes in the application data bag, therefore, + only the leader unit can call it. + + Args: + relation_id: the identifier for a particular relation. + entity_name: name of the created entity + entity_password: password of the created entity. + """ + self.update_relation_data( + relation_id, + {"entity-name": entity_name, "entity-password": entity_password}, + ) + + def set_tls(self, relation_id: int, tls: str) -> None: + """Set whether TLS is enabled. + + Args: + relation_id: the identifier for a particular relation. + tls: whether tls is enabled (True or False). + """ + self.update_relation_data(relation_id, {"tls": tls}) + + def set_tls_ca(self, relation_id: int, tls_ca: str) -> None: + """Set the TLS CA in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + tls_ca: TLS certification authority. + """ + self.update_relation_data(relation_id, {"tls-ca": tls_ca}) + + @leader_only + def get_statuses(self, relation_id: int) -> Dict[int, RelationStatus]: + """Return all currently active statuses on this relation. Can only be called on leader units. + + Args: + relation_id (int): the identifier for a particular relation. + + Returns: + Dict[int, RelationStatus]: A mapping of status code to RelationStatus instances. + """ + raw = self.fetch_my_relation_field(relation_id, STATUS_FIELD) or "[]" + + return {item["code"]: RelationStatus(**item) for item in json.loads(raw)} + + @overload + def raise_status(self, relation_id: int, status: int) -> None: ... + + @overload + def raise_status(self, relation_id: int, status: RelationStatusDict) -> None: ... + + @overload + def raise_status(self, relation_id: int, status: RelationStatus) -> None: ... + + def raise_status( + self, relation_id: int, status: Union[RelationStatus, RelationStatusDict, int] + ) -> None: + """Raise a status on the relation. Can only be called on leader units. + + Args: + relation_id (int): the identifier for a particular relation. + status (RelationStatus | RelationStatusDict | int): A representation of the status being raised, + which could be either a RelationStatus, an appropriate dict, or the numeric status code. + + Raises: + ValueError: If the status provided is not correctly formatted. + """ + if isinstance(status, int): + # we expect the status schema to be defined in this case. + if status not in self._status_schema: + raise KeyError(f"Status code [{status}] not defined.") + _status = self._status_schema[status] + elif isinstance(status, dict): + _status = RelationStatus(**status) + elif isinstance(status, RelationStatus): + _status = status + else: + raise ValueError( + "The status should be either a RelationStatus, an appropriate dict, or the numeric status code." + ) + + statuses = self.get_statuses(relation_id) + statuses.update({_status.code: _status}) + serialized = json.dumps([asdict(statuses[k]) for k in sorted(statuses)]) + self.update_relation_data(relation_id, {STATUS_FIELD: serialized}) + + def resolve_status(self, relation_id: int, status_code: int) -> None: + """Set a previously raised status as resolved. + + Args: + relation_id (int): the identifier for a particular relation. + status_code (int): the numeric code of the resolved status. + """ + statuses = self.get_statuses(relation_id) + if status_code not in statuses: + logger.error(f"Status [{status_code}] has never been raised before.") + return + + statuses.pop(status_code) + serialized = json.dumps([asdict(statuses[k]) for k in sorted(statuses)]) + self.update_relation_data(relation_id, {STATUS_FIELD: serialized}) + + def clear_statuses(self, relation_id: int) -> None: + """Clear all previously raised statuses. + + Args: + relation_id (int): the identifier for a particular relation. + """ + self.delete_relation_data(relation_id, [STATUS_FIELD]) + + # Public functions -- inherited + + fetch_my_relation_data = leader_only(Data.fetch_my_relation_data) + fetch_my_relation_field = leader_only(Data.fetch_my_relation_field) + + def _load_secrets_from_databag(self, relation: Relation) -> None: + """Load secrets from the databag.""" + requested_secrets = get_encoded_list(relation, relation.app, REQ_SECRET_FIELDS) + provided_secrets = get_encoded_list(relation, relation.app, PROV_SECRET_FIELDS) + if requested_secrets is not None: + self._local_secret_fields = requested_secrets + + if provided_secrets is not None: + self._remote_secret_fields = provided_secrets + + +class RequirerData(Data): + """Requirer-side of the relation.""" + + SECRET_FIELDS = [ + "username", + "password", + "tls", + "tls-ca", + "uris", + "read-only-uris", + "entity-name", + "entity-password", + ] + + def __init__( + self, + model, + relation_name: str, + extra_user_roles: Optional[str] = None, + additional_secret_fields: Optional[List[str]] = [], + extra_group_roles: Optional[str] = None, + entity_type: Optional[str] = None, + entity_permissions: Optional[str] = None, + requested_entity_secret: Optional[str] = None, + requested_entity_name: Optional[str] = None, + requested_entity_password: Optional[str] = None, + prefix_matching: Optional[str] = None, + ): + """Manager of base client relations.""" + super().__init__(model, relation_name) + self.extra_user_roles = extra_user_roles + self.extra_group_roles = extra_group_roles + self.entity_type = entity_type + self.entity_permissions = entity_permissions + self.requested_entity_secret = requested_entity_secret + self.requested_entity_name = requested_entity_name + self.requested_entity_password = requested_entity_password + self.prefix_matching = prefix_matching + + if ( + self.requested_entity_secret or self.requested_entity_name + ) and not self.secrets_enabled: + raise SecretsUnavailableError("Secrets unavailable on current Juju version") + + if self.requested_entity_secret and ( + self.requested_entity_name or self.requested_entity_password + ): + raise IllegalOperationError("Unable to use provided and automated entity name secret") + + if self.requested_entity_password and not self.requested_entity_name: + raise IllegalOperationError("Unable to set entity password without an entity name") + + self._validate_entity_type() + self._validate_entity_permissions() + + self._remote_secret_fields = list(self.SECRET_FIELDS) + self._local_secret_fields = [ + field + for field in self.SECRET_LABEL_MAP.keys() + if field not in self._remote_secret_fields + ] + if additional_secret_fields: + self._remote_secret_fields += additional_secret_fields + self.data_component = self.local_unit + + # Internal functions + + def _is_resource_created_for_relation(self, relation: Relation) -> bool: + if not relation.app: + return False + + data = self.fetch_relation_data( + [relation.id], + ["username", "password", "entity-name", "entity-password"], + ).get(relation.id, {}) + + return any( + [ + all(bool(data.get(field)) for field in ("username", "password")), + all(bool(data.get(field)) for field in ("entity-name",)), + ] + ) + + def _validate_entity_type(self) -> None: + """Validates the consistency of the provided entity-type and its extra roles.""" + if self.entity_type and self.entity_type not in {ENTITY_USER, ENTITY_GROUP}: + raise ValueError("Invalid entity-type. Possible values are USER and GROUP") + + if self.entity_type == ENTITY_USER and self.extra_group_roles: + raise ValueError("Inconsistent entity information. Use extra_user_roles instead") + + if self.entity_type == ENTITY_GROUP and self.extra_user_roles: + raise ValueError("Inconsistent entity information. Use extra_group_roles instead") + + def _validate_entity_permissions(self) -> None: + """Validates whether the provided entity permissions follow the right JSON format.""" + if not self.entity_permissions: + return + + accepted_keys = {"resource_name", "resource_type", "privileges"} + + try: + permissions = json.loads(self.entity_permissions) + for permission in permissions: + if permission.keys() != accepted_keys: + raise ValueError("Invalid entity permissions format. See accepted keys") + except json.decoder.JSONDecodeError: + raise ValueError("Invalid entity permissions format. It must be JSON format") + + # Public functions + + def is_resource_created(self, relation_id: Optional[int] = None) -> bool: + """Check if the resource has been created. + + This function can be used to check if the Provider answered with data in the charm code + when outside an event callback. + + Args: + relation_id (int, optional): When provided the check is done only for the relation id + provided, otherwise the check is done for all relations + + Returns: + True or False + + Raises: + IndexError: If relation_id is provided but that relation does not exist + """ + if relation_id is not None: + try: + relation = [relation for relation in self.relations if relation.id == relation_id][ + 0 + ] + return self._is_resource_created_for_relation(relation) + except IndexError: + raise IndexError(f"relation id {relation_id} cannot be accessed") + else: + return ( + all( + self._is_resource_created_for_relation(relation) for relation in self.relations + ) + if self.relations + else False + ) + + # Public functions -- inherited + + fetch_my_relation_data = leader_only(Data.fetch_my_relation_data) + fetch_my_relation_field = leader_only(Data.fetch_my_relation_field) + + def _load_secrets_from_databag(self, relation: Relation) -> None: + """Load secrets from the databag.""" + requested_secrets = get_encoded_list(relation, self.local_unit, REQ_SECRET_FIELDS) + provided_secrets = get_encoded_list(relation, self.local_unit, PROV_SECRET_FIELDS) + if requested_secrets: + self._remote_secret_fields = requested_secrets + + if provided_secrets: + self._local_secret_fields = provided_secrets + + +class StatusEventBase(RelationEvent): + """Base class for relation status change events.""" + + def __init__( + self, + handle: Handle, + relation: Relation, + status: RelationStatus, + app: Optional[Application] = None, + unit: Optional[Unit] = None, + ): + super().__init__(handle, relation, app=app, unit=unit) + self.status = status + + def snapshot(self) -> dict: + """Return a snapshot of the event.""" + return super().snapshot() | {"status": json.dumps(asdict(self.status))} + + def restore(self, snapshot: dict): + """Restore the event from a snapshot.""" + super().restore(snapshot) + self.status = RelationStatus(**json.loads(snapshot["status"])) + + @property + def active_statuses(self) -> List[RelationStatus]: + """Returns a list of all currently active statuses on this relation.""" + if not self.relation.app: + return [] + + raw = json.loads(self.relation.data[self.relation.app].get(STATUS_FIELD, "[]")) + + return [RelationStatus(**item) for item in raw] + + +class StatusRaisedEvent(StatusEventBase): + """Event emitted on the requirer when a new status is being raised by the provider on relation.""" + + +class StatusResolvedEvent(StatusEventBase): + """Event emitted on the requirer when a status is marked as resolved by the provider on relation.""" + + +class RequirerCharmEvents(CharmEvents): + """Base events for data requirer charms.""" + + status_raised = EventSource(StatusRaisedEvent) + status_resolved = EventSource(StatusResolvedEvent) + + +class RequirerEventHandlers(EventHandlers): + """Requires-side of the relation.""" + + def __init__(self, charm: CharmBase, relation_data: RequirerData, unique_key: str = ""): + """Manager of base client relations.""" + super().__init__(charm, relation_data, unique_key) + + def _main_credentials_shared(self, diff: Diff) -> bool: + """Whether the relation data-bag contains username / password keys.""" + user_secret = self.relation_data._generate_secret_field_name(SECRET_GROUPS.USER) + return any( + [ + user_secret in diff.added, + "username" in diff.added and "password" in diff.added, + ] + ) + + def _entity_credentials_shared(self, diff: Diff) -> bool: + """Whether the relation data-bag contains rolename / password keys.""" + entity_secret = self.relation_data._generate_secret_field_name(SECRET_GROUPS.ENTITY) + return any( + [ + entity_secret in diff.added, + "entity-name" in diff.added, + ] + ) + + # Event handlers + + def _on_relation_created_event(self, event: RelationCreatedEvent) -> None: + """Event emitted when the relation is created.""" + if not self.relation_data.local_unit.is_leader(): + return + + if self.relation_data.remote_secret_fields: + if self.relation_data.SCOPE == Scope.APP: + set_encoded_field( + event.relation, + self.relation_data.local_app, + REQ_SECRET_FIELDS, + self.relation_data.remote_secret_fields, + ) + + set_encoded_field( + event.relation, + self.relation_data.local_unit, + REQ_SECRET_FIELDS, + self.relation_data.remote_secret_fields, + ) + + if self.relation_data.local_secret_fields: + if self.relation_data.SCOPE == Scope.APP: + set_encoded_field( + event.relation, + self.relation_data.local_app, + PROV_SECRET_FIELDS, + self.relation_data.local_secret_fields, + ) + set_encoded_field( + event.relation, + self.relation_data.local_unit, + PROV_SECRET_FIELDS, + self.relation_data.local_secret_fields, + ) + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the relation has changed.""" + # Retrieve old statuses from "data" + old_data = get_encoded_dict(event.relation, self.relation_data.local_unit, "data") or {} + old_statuses = json.loads(old_data.get(STATUS_FIELD, "[]")) + previous_codes = {status.get("code") for status in old_statuses} + + # Compute current statuses + current_statuses = json.loads( + self.relation_data.fetch_relation_field(event.relation.id, STATUS_FIELD) or "[]" + ) + current_codes = {status.get("code") for status in current_statuses} + + # Detect changes + raised = current_codes - previous_codes + resolved = previous_codes - current_codes + + for status_code in raised: + logger.debug(f"Status [{status_code}] raised") + _status = next(s for s in current_statuses if s["code"] == status_code) + _status_instance = RelationStatus(**_status) + getattr(self.on, "status_raised").emit( + event.relation, + status=_status_instance, + app=event.app, + unit=event.unit, + ) + + for status_code in resolved: + logger.debug(f"Status [{status_code}] resolved") + _status = next(s for s in old_statuses if s["code"] == status_code) + _status_instance = RelationStatus(**_status) + getattr(self.on, "status_resolved").emit( + event.relation, + status=_status_instance, + app=event.app, + unit=event.unit, + ) + + +class ProviderEventHandlers(EventHandlers): + """Provider-side of the relation.""" + + def __init__(self, charm: CharmBase, relation_data: ProviderData, unique_key: str = ""): + """Manager of base client relations.""" + super().__init__(charm, relation_data, unique_key) + + @staticmethod + def _validate_entity_consistency(event: RelationEvent, diff: Diff) -> None: + """Validates that entity information is not changed after relation is established. + + - When entity-type changes, backwards compatibility is broken. + - When extra-user-roles changes, role membership checks become incredibly complex. + - When extra-group-roles changes, role membership checks become incredibly complex. + """ + if not isinstance(event, RelationChangedEvent): + return + + for key in ["entity-type", "extra-user-roles", "extra-group-roles"]: + if key in diff.changed: + raise ValueError(f"Cannot change {key} after relation has already been created") + + # Event handlers + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the relation data has changed.""" + requested_secrets = get_encoded_list(event.relation, event.relation.app, REQ_SECRET_FIELDS) + provided_secrets = get_encoded_list(event.relation, event.relation.app, PROV_SECRET_FIELDS) + if requested_secrets is not None: + self.relation_data._local_secret_fields = requested_secrets + + if provided_secrets is not None: + self.relation_data._remote_secret_fields = provided_secrets + + +################################################################################ +# Peer Relation Data +################################################################################ + + +class DataPeerData(RequirerData, ProviderData): + """Represents peer relations data.""" + + SECRET_FIELDS = [] + SECRET_FIELD_NAME = "internal_secret" + SECRET_LABEL_MAP = {} + + def __init__( + self, + model, + relation_name: str, + additional_secret_fields: Optional[List[str]] = [], + additional_secret_group_mapping: Dict[str, str] = {}, + secret_field_name: Optional[str] = None, + deleted_label: Optional[str] = None, + ): + RequirerData.__init__( + self, + model=model, + relation_name=relation_name, + additional_secret_fields=additional_secret_fields, + ) + self.secret_field_name = secret_field_name if secret_field_name else self.SECRET_FIELD_NAME + self.deleted_label = deleted_label + self._secret_label_map = {} + + # Legacy information holders + self._legacy_labels = [] + self._legacy_secret_uri = None + + # Secrets that are being dynamically added within the scope of this event handler run + self._new_secrets = [] + self._additional_secret_group_mapping = additional_secret_group_mapping + + for group, fields in additional_secret_group_mapping.items(): + if group not in SECRET_GROUPS.groups(): + setattr(SECRET_GROUPS, group, group) + for field in fields: + secret_group = SECRET_GROUPS.get_group(group) + internal_field = self._field_to_internal_name(field, secret_group) + self._secret_label_map.setdefault(group, []).append(internal_field) + self._remote_secret_fields.append(internal_field) + + @property + def scope(self) -> Optional[Scope]: + """Turn component information into Scope.""" + if isinstance(self.component, Application): + return Scope.APP + if isinstance(self.component, Unit): + return Scope.UNIT + + @property + def secret_label_map(self) -> Dict[str, str]: + """Property storing secret mappings.""" + return self._secret_label_map + + @property + def static_secret_fields(self) -> List[str]: + """Re-definition of the property in a way that dynamically extended list is retrieved.""" + return self._remote_secret_fields + + @property + def local_secret_fields(self) -> List[str]: + """Re-definition of the property in a way that dynamically extended list is retrieved.""" + return ( + self.static_secret_fields if self.static_secret_fields else self.current_secret_fields + ) + + @property + def current_secret_fields(self) -> List[str]: + """Helper method to get all currently existing secret fields (added statically or dynamically).""" + if not self.secrets_enabled: + return [] + + if len(self._model.relations[self.relation_name]) > 1: + raise ValueError(f"More than one peer relation on {self.relation_name}") + + relation = self._model.relations[self.relation_name][0] + fields = [] + + ignores = [ + SECRET_GROUPS.get_group("user"), + SECRET_GROUPS.get_group("tls"), + SECRET_GROUPS.get_group("mtls"), + SECRET_GROUPS.get_group("entity"), + ] + for group in SECRET_GROUPS.groups(): + if group in ignores: + continue + if content := self._get_group_secret_contents(relation, group): + fields += list(content.keys()) + return list(set(fields) | set(self._new_secrets)) + + @dynamic_secrets_only + def set_secret( + self, + relation_id: int, + field: str, + value: str, + group_mapping: Optional[SecretGroup] = None, + ) -> None: + """Public interface method to add a Relation Data field specifically as a Juju Secret. + + Args: + relation_id: ID of the relation + field: The secret field that is to be added + value: The string value of the secret + group_mapping: The name of the "secret group", in case the field is to be added to an existing secret + """ + self._legacy_apply_on_update([field]) + + full_field = self._field_to_internal_name(field, group_mapping) + if self.secrets_enabled and full_field not in self.current_secret_fields: + self._new_secrets.append(full_field) + if self.valid_field_pattern(field, full_field): + self.update_relation_data(relation_id, {full_field: value}) + + # Unlike for set_secret(), there's no harm using this operation with static secrets + # The restricion is only added to keep the concept clear + @dynamic_secrets_only + def get_secret( + self, + relation_id: int, + field: str, + group_mapping: Optional[SecretGroup] = None, + ) -> Optional[str]: + """Public interface method to fetch secrets only.""" + self._legacy_apply_on_fetch() + + full_field = self._field_to_internal_name(field, group_mapping) + if ( + self.secrets_enabled + and full_field not in self.current_secret_fields + and field not in self.current_secret_fields + ): + return + if self.valid_field_pattern(field, full_field): + return self.fetch_my_relation_field(relation_id, full_field) + + @dynamic_secrets_only + def delete_secret( + self, + relation_id: int, + field: str, + group_mapping: Optional[SecretGroup] = None, + ) -> Optional[str]: + """Public interface method to delete secrets only.""" + self._legacy_apply_on_delete([field]) + + full_field = self._field_to_internal_name(field, group_mapping) + if self.secrets_enabled and full_field not in self.current_secret_fields: + logger.warning(f"Secret {field} from group {group_mapping} was not found") + return + + if self.valid_field_pattern(field, full_field): + self.delete_relation_data(relation_id, [full_field]) + + ########################################################################## + # Helpers + ########################################################################## + + @staticmethod + def _field_to_internal_name(field: str, group: Optional[SecretGroup]) -> str: + if not group or group == SECRET_GROUPS.EXTRA: + return field + return f"{field}{GROUP_SEPARATOR}{group}" + + @staticmethod + def _internal_name_to_field(name: str) -> Tuple[str, SecretGroup]: + parts = name.split(GROUP_SEPARATOR) + if not len(parts) > 1: + return (parts[0], SECRET_GROUPS.EXTRA) + secret_group = SECRET_GROUPS.get_group(parts[1]) + if not secret_group: + raise ValueError(f"Invalid secret field {name}") + return (parts[0], secret_group) + + def _group_secret_fields(self, secret_fields: List[str]) -> Dict[SecretGroup, List[str]]: + """Helper function to arrange secret mappings under their group. + + NOTE: All unrecognized items end up in the 'extra' secret bucket. + Make sure only secret fields are passed! + """ + secret_fieldnames_grouped = {} + for key in secret_fields: + field, group = self._internal_name_to_field(key) + secret_fieldnames_grouped.setdefault(group, []).append(field) + return secret_fieldnames_grouped + + def _content_for_secret_group( + self, content: Dict[str, str], secret_fields: Set[str], group_mapping: SecretGroup + ) -> Dict[str, str]: + """Select : pairs from input, that belong to this particular Secret group.""" + if group_mapping == SECRET_GROUPS.EXTRA: + return {k: v for k, v in content.items() if k in self.local_secret_fields} + return { + self._internal_name_to_field(k)[0]: v + for k, v in content.items() + if k in self.local_secret_fields + } + + def valid_field_pattern(self, field: str, full_field: str) -> bool: + """Check that no secret group is attempted to be used together without secrets being enabled. + + Secrets groups are impossible to use with versions that are not yet supporting secrets. + """ + if not self.secrets_enabled and full_field != field: + logger.error( + f"Can't access {full_field}: no secrets available (i.e. no secret groups either)." + ) + return False + return True + + def _load_secrets_from_databag(self, relation: Relation) -> None: + """Load secrets from the databag.""" + requested_secrets = get_encoded_list(relation, self.component, REQ_SECRET_FIELDS) + provided_secrets = get_encoded_list(relation, self.component, PROV_SECRET_FIELDS) + if requested_secrets: + self._remote_secret_fields = requested_secrets + + if provided_secrets: + self._local_secret_fields = provided_secrets + + ########################################################################## + # Backwards compatibility / Upgrades + ########################################################################## + # These functions are used to keep backwards compatibility on upgrades + # Policy: + # All data is kept intact until the first write operation. (This allows a minimal + # grace period during which rollbacks are fully safe. For more info see spec.) + # All data involves: + # - databag + # - secrets content + # - secret labels (!!!) + # Legacy functions must return None, and leave an equally consistent state whether + # they are executed or skipped (as a high enough versioned execution environment may + # not require so) + + # Full legacy stack for each operation + + def _legacy_apply_on_fetch(self) -> None: + """All legacy functions to be applied on fetch.""" + relation = self._model.relations[self.relation_name][0] + self._legacy_compat_generate_prev_labels() + self._legacy_compat_secret_uri_from_databag(relation) + + def _legacy_apply_on_update(self, fields) -> None: + """All legacy functions to be applied on update.""" + relation = self._model.relations[self.relation_name][0] + self._legacy_compat_generate_prev_labels() + self._legacy_compat_secret_uri_from_databag(relation) + self._legacy_migration_remove_secret_from_databag(relation, fields) + self._legacy_migration_remove_secret_field_name_from_databag(relation) + + def _legacy_apply_on_delete(self, fields) -> None: + """All legacy functions to be applied on delete.""" + relation = self._model.relations[self.relation_name][0] + self._legacy_compat_generate_prev_labels() + self._legacy_compat_secret_uri_from_databag(relation) + self._legacy_compat_check_deleted_label(relation, fields) + + # Compatibility + + @legacy_apply_from_version(18) + def _legacy_compat_check_deleted_label(self, relation, fields) -> None: + """Helper function for legacy behavior. + + As long as https://bugs.launchpad.net/juju/+bug/2028094 wasn't fixed, + we did not delete fields but rather kept them in the secret with a string value + expressing invalidity. This function is maintainnig that behavior when needed. + """ + if not self.deleted_label: + return + + current_data = self.fetch_my_relation_data([relation.id], fields) + if current_data is not None: + # Check if the secret we wanna delete actually exists + # Given the "deleted label", here we can't rely on the default mechanism (i.e. 'key not found') + if non_existent := (set(fields) & set(self.local_secret_fields)) - set( + current_data.get(relation.id, []) + ): + logger.debug( + "Non-existing secret %s was attempted to be removed.", + ", ".join(non_existent), + ) + + @legacy_apply_from_version(18) + def _legacy_compat_secret_uri_from_databag(self, relation) -> None: + """Fetching the secret URI from the databag, in case stored there.""" + self._legacy_secret_uri = relation.data[self.component].get( + self._generate_secret_field_name(), None + ) + + @legacy_apply_from_version(34) + def _legacy_compat_generate_prev_labels(self) -> None: + """Generator for legacy secret label names, for backwards compatibility. + + Secret label is part of the data that MUST be maintained across rolling upgrades. + In case there may be a change on a secret label, the old label must be recognized + after upgrades, and left intact until the first write operation -- when we roll over + to the new label. + + This function keeps "memory" of previously used secret labels. + NOTE: Return value takes decorator into account -- all 'legacy' functions may return `None` + + v0.34 (rev69): Fixing issue https://github.com/canonical/data-platform-libs/issues/155 + meant moving from '.' (i.e. 'mysql.app', 'mysql.unit') + to labels '..' (like 'peer.mysql.app') + """ + if self._legacy_labels: + return + + result = [] + members = [self._model.app.name] + if self.scope: + members.append(self.scope.value) + result.append(f"{'.'.join(members)}") + self._legacy_labels = result + + # Migration + + @legacy_apply_from_version(18) + def _legacy_migration_remove_secret_from_databag(self, relation, fields: List[str]) -> None: + """For Rolling Upgrades -- when moving from databag to secrets usage. + + Practically what happens here is to remove stuff from the databag that is + to be stored in secrets. + """ + if not self.local_secret_fields: + return + + secret_fields_passed = set(self.local_secret_fields) & set(fields) + for field in secret_fields_passed: + if self._fetch_relation_data_without_secrets(self.component, relation, [field]): + self._delete_relation_data_without_secrets(self.component, relation, [field]) + + @legacy_apply_from_version(18) + def _legacy_migration_remove_secret_field_name_from_databag(self, relation) -> None: + """Making sure that the old databag URI is gone. + + This action should not be executed more than once. + + There was a phase (before moving secrets usage to libs) when charms saved the peer + secret URI to the databag, and used this URI from then on to retrieve their secret. + When upgrading to charm versions using this library, we need to add a label to the + secret and access it via label from than on, and remove the old traces from the databag. + """ + # Nothing to do if 'internal-secret' is not in the databag + if not (relation.data[self.component].get(self._generate_secret_field_name())): + return + + # Making sure that the secret receives its label + # (This should have happened by the time we get here, rather an extra security measure.) + secret = self._get_relation_secret(relation.id) + + # Either app scope secret with leader executing, or unit scope secret + leader_or_unit_scope = self.component != self.local_app or self.local_unit.is_leader() + if secret and leader_or_unit_scope: + # Databag reference to the secret URI can be removed, now that it's labelled + relation.data[self.component].pop(self._generate_secret_field_name(), None) + + ########################################################################## + # Event handlers + ########################################################################## + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the relation has changed.""" + pass + + def _on_secret_changed_event(self, event: SecretChangedEvent) -> None: + """Event emitted when the secret has changed.""" + pass + + ########################################################################## + # Overrides of Relation Data handling functions + ########################################################################## + + def _generate_secret_label( + self, relation_name: str, relation_id: int, group_mapping: SecretGroup + ) -> str: + members = [relation_name, self._model.app.name] + if self.scope: + members.append(self.scope.value) + if group_mapping != SECRET_GROUPS.EXTRA: + members.append(group_mapping) + return f"{'.'.join(members)}" + + def _generate_secret_field_name(self, group_mapping: SecretGroup = SECRET_GROUPS.EXTRA) -> str: + """Generate unique group_mappings for secrets within a relation context.""" + return f"{self.secret_field_name}" + + @juju_secrets_only + def _get_relation_secret( + self, + relation_id: int, + group_mapping: SecretGroup = SECRET_GROUPS.EXTRA, + relation_name: Optional[str] = None, + ) -> Optional[CachedSecret]: + """Retrieve a Juju Secret specifically for peer relations. + + In case this code may be executed within a rolling upgrade, and we may need to + migrate secrets from the databag to labels, we make sure to stick the correct + label on the secret, and clean up the local databag. + """ + if not relation_name: + relation_name = self.relation_name + + relation = self._model.get_relation(relation_name, relation_id) + if not relation: + return + + label = self._generate_secret_label(relation_name, relation_id, group_mapping) + + # URI or legacy label is only to applied when moving single legacy secret to a (new) label + if group_mapping == SECRET_GROUPS.EXTRA: + # Fetching the secret with fallback to URI (in case label is not yet known) + # Label would we "stuck" on the secret in case it is found + return self.secrets.get( + label, self._legacy_secret_uri, legacy_labels=self._legacy_labels + ) + return self.secrets.get(label) + + def _get_group_secret_contents( + self, + relation: Relation, + group: SecretGroup, + secret_fields: Union[Set[str], List[str]] = [], + ) -> Dict[str, str]: + """Helper function to retrieve collective, requested contents of a secret.""" + secret_fields = [self._internal_name_to_field(k)[0] for k in secret_fields] + result = super()._get_group_secret_contents(relation, group, secret_fields) + if self.deleted_label: + result = {key: result[key] for key in result if result[key] != self.deleted_label} + if self._additional_secret_group_mapping: + return {self._field_to_internal_name(key, group): result[key] for key in result} + return result + + @either_static_or_dynamic_secrets + def _fetch_my_specific_relation_data( + self, relation: Relation, fields: Optional[List[str]] + ) -> Dict[str, str]: + """Fetch data available (directily or indirectly -- i.e. secrets) from the relation for owner/this_app.""" + return self._fetch_relation_data_with_secrets( + self.component, self.local_secret_fields, relation, fields + ) + + @either_static_or_dynamic_secrets + def _update_relation_data(self, relation: Relation, data: Dict[str, str]) -> None: + """Update data available (directily or indirectly -- i.e. secrets) from the relation for owner/this_app.""" + self._load_secrets_from_databag(relation) + + _, normal_fields = self._process_secret_fields( + relation, + self.local_secret_fields, + list(data), + self._add_or_update_relation_secrets, + data=data, + uri_to_databag=False, + ) + + normal_content = {k: v for k, v in data.items() if k in normal_fields} + self._update_relation_data_without_secrets(self.component, relation, normal_content) + + @either_static_or_dynamic_secrets + def _delete_relation_data(self, relation: Relation, fields: List[str]) -> None: + """Delete data available (directily or indirectly -- i.e. secrets) from the relation for owner/this_app.""" + self._load_secrets_from_databag(relation) + if self.local_secret_fields and self.deleted_label: + _, normal_fields = self._process_secret_fields( + relation, + self.local_secret_fields, + fields, + self._update_relation_secret, + data=dict.fromkeys(fields, self.deleted_label), + ) + else: + _, normal_fields = self._process_secret_fields( + relation, + self.local_secret_fields, + fields, + self._delete_relation_secret, + fields=fields, + ) + self._delete_relation_data_without_secrets(self.component, relation, list(normal_fields)) + + def fetch_relation_data( + self, + relation_ids: Optional[List[int]] = None, + fields: Optional[List[str]] = None, + relation_name: Optional[str] = None, + ) -> Dict[int, Dict[str, str]]: + """This method makes no sense for a Peer Relation.""" + raise NotImplementedError( + "Peer Relation only supports 'self-side' fetch methods: " + "fetch_my_relation_data() and fetch_my_relation_field()" + ) + + def fetch_relation_field( + self, relation_id: int, field: str, relation_name: Optional[str] = None + ) -> Optional[str]: + """This method makes no sense for a Peer Relation.""" + raise NotImplementedError( + "Peer Relation only supports 'self-side' fetch methods: " + "fetch_my_relation_data() and fetch_my_relation_field()" + ) + + ########################################################################## + # Public functions -- inherited + ########################################################################## + + fetch_my_relation_data = Data.fetch_my_relation_data + fetch_my_relation_field = Data.fetch_my_relation_field + + +class DataPeerEventHandlers(RequirerEventHandlers): + """Requires-side of the relation.""" + + def __init__(self, charm: CharmBase, relation_data: RequirerData, unique_key: str = ""): + """Manager of base client relations.""" + super().__init__(charm, relation_data, unique_key) + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the relation has changed.""" + pass + + def _on_secret_changed_event(self, event: SecretChangedEvent) -> None: + """Event emitted when the secret has changed.""" + pass + + +class DataPeer(DataPeerData, DataPeerEventHandlers): + """Represents peer relations.""" + + def __init__( + self, + charm, + relation_name: str, + additional_secret_fields: Optional[List[str]] = [], + additional_secret_group_mapping: Dict[str, str] = {}, + secret_field_name: Optional[str] = None, + deleted_label: Optional[str] = None, + unique_key: str = "", + ): + DataPeerData.__init__( + self, + charm.model, + relation_name, + additional_secret_fields, + additional_secret_group_mapping, + secret_field_name, + deleted_label, + ) + DataPeerEventHandlers.__init__(self, charm, self, unique_key) + + +class DataPeerUnitData(DataPeerData): + """Unit data abstraction representation.""" + + SCOPE = Scope.UNIT + + def __init__(self, *args, **kwargs): + super().__init__(*args, **kwargs) + + +class DataPeerUnit(DataPeerUnitData, DataPeerEventHandlers): + """Unit databag representation.""" + + def __init__( + self, + charm, + relation_name: str, + additional_secret_fields: Optional[List[str]] = [], + additional_secret_group_mapping: Dict[str, str] = {}, + secret_field_name: Optional[str] = None, + deleted_label: Optional[str] = None, + unique_key: str = "", + ): + DataPeerData.__init__( + self, + charm.model, + relation_name, + additional_secret_fields, + additional_secret_group_mapping, + secret_field_name, + deleted_label, + ) + DataPeerEventHandlers.__init__(self, charm, self, unique_key) + + +class DataPeerOtherUnitData(DataPeerUnitData): + """Unit data abstraction representation.""" + + def __init__(self, unit: Unit, *args, **kwargs): + super().__init__(*args, **kwargs) + self.local_unit = unit + self.component = unit + + def update_relation_data(self, relation_id: int, data: dict) -> None: + """This method makes no sense for a Other Peer Relation.""" + raise NotImplementedError("It's not possible to update data of another unit.") + + def delete_relation_data(self, relation_id: int, fields: List[str]) -> None: + """This method makes no sense for a Other Peer Relation.""" + raise NotImplementedError("It's not possible to delete data of another unit.") + + +class DataPeerOtherUnitEventHandlers(DataPeerEventHandlers): + """Requires-side of the relation.""" + + def __init__(self, charm: CharmBase, relation_data: DataPeerUnitData): + """Manager of base client relations.""" + unique_key = f"{relation_data.relation_name}-{relation_data.local_unit.name}" + super().__init__(charm, relation_data, unique_key=unique_key) + + +class DataPeerOtherUnit(DataPeerOtherUnitData, DataPeerOtherUnitEventHandlers): + """Unit databag representation for another unit than the executor.""" + + def __init__( + self, + unit: Unit, + charm: CharmBase, + relation_name: str, + additional_secret_fields: Optional[List[str]] = [], + additional_secret_group_mapping: Dict[str, str] = {}, + secret_field_name: Optional[str] = None, + deleted_label: Optional[str] = None, + ): + DataPeerOtherUnitData.__init__( + self, + unit, + charm.model, + relation_name, + additional_secret_fields, + additional_secret_group_mapping, + secret_field_name, + deleted_label, + ) + DataPeerOtherUnitEventHandlers.__init__(self, charm, self) + + +################################################################################ +# Cross-charm Relations Data Handling and Events +################################################################################ + +# Generic events + + +class RelationEventWithSecret(RelationEvent): + """Base class for Relation Events that need to handle secrets.""" + + @property + def _secrets(self) -> dict: + """Caching secrets to avoid fetching them each time a field is referrd. + + DON'T USE the encapsulated helper variable outside of this function + """ + if not hasattr(self, "_cached_secrets"): + self._cached_secrets = {} + return self._cached_secrets + + def _get_secret(self, group) -> Optional[Dict[str, str]]: + """Retrieving secrets.""" + if not self.app: + return + if not self._secrets.get(group): + self._secrets[group] = None + secret_field = f"{PROV_SECRET_PREFIX}{group}" + if secret_uri := self.relation.data[self.app].get(secret_field): + secret = self.framework.model.get_secret(id=secret_uri) + self._secrets[group] = secret.get_content() + return self._secrets[group] + + @property + def secrets_enabled(self): + """Is this Juju version allowing for Secrets usage?""" + return JujuVersion.from_environ().has_secrets + + +class EntityProvidesEvent(RelationEvent): + """Base class for data events.""" + + @property + def extra_user_roles(self) -> Optional[str]: + """Returns the extra user roles that were requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("extra-user-roles") + + @property + def extra_group_roles(self) -> Optional[str]: + """Returns the extra group roles that were requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("extra-group-roles") + + @property + def entity_type(self) -> Optional[str]: + """Returns the entity_type that were requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("entity-type") + + @property + def entity_permissions(self) -> Optional[str]: + """Returns the entity_permissions that were requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("entity-permissions") + + +class EntityRequiresEvent(RelationEventWithSecret): + """Base class for authentication fields for events. + + The amount of logic added here is not ideal -- but this was the only way to preserve + the interface when moving to Juju Secrets + """ + + @property + def entity_name(self) -> Optional[str]: + """Returns the name for the created entity.""" + if not self.relation.app: + return None + + if self.secrets_enabled: + secret = self._get_secret("entity") + if secret: + return secret.get("entity-name") + + return self.relation.data[self.relation.app].get("entity-name") + + @property + def entity_password(self) -> Optional[str]: + """Returns the password for the created entity.""" + if not self.relation.app: + return None + + if self.secrets_enabled: + secret = self._get_secret("entity") + if secret: + return secret.get("entity-password") + + return self.relation.data[self.relation.app].get("entity-password") + + +class AuthenticationEvent(RelationEventWithSecret): + """Base class for authentication fields for events. + + The amount of logic added here is not ideal -- but this was the only way to preserve + the interface when moving to Juju Secrets + """ + + @property + def username(self) -> Optional[str]: + """Returns the created username.""" + if not self.relation.app: + return None + + if self.secrets_enabled: + secret = self._get_secret("user") + if secret: + return secret.get("username") + + return self.relation.data[self.relation.app].get("username") + + @property + def password(self) -> Optional[str]: + """Returns the password for the created user.""" + if not self.relation.app: + return None + + if self.secrets_enabled: + secret = self._get_secret("user") + if secret: + return secret.get("password") + + return self.relation.data[self.relation.app].get("password") + + @property + def tls(self) -> Optional[str]: + """Returns whether TLS is configured.""" + if not self.relation.app: + return None + + if self.secrets_enabled: + secret = self._get_secret("tls") + if secret: + return secret.get("tls") + + return self.relation.data[self.relation.app].get("tls") + + @property + def tls_ca(self) -> Optional[str]: + """Returns TLS CA.""" + if not self.relation.app: + return None + + if self.secrets_enabled: + secret = self._get_secret("tls") + if secret: + return secret.get("tls-ca") + + return self.relation.data[self.relation.app].get("tls-ca") + + +# Database related events and fields + + +class DatabaseProvidesEvent(RelationEvent): + """Base class for database events.""" + + @property + def database(self) -> Optional[str]: + """Returns the database that was requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("database") + + +class DatabaseRequestedEvent(DatabaseProvidesEvent): + """Event emitted when a new database is requested for use on this relation.""" + + @property + def extra_user_roles(self) -> Optional[str]: + """Returns the extra user roles that were requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("extra-user-roles") + + @property + def external_node_connectivity(self) -> bool: + """Returns the requested external_node_connectivity field.""" + if not self.relation.app: + return False + + return ( + self.relation.data[self.relation.app].get("external-node-connectivity", "false") + == "true" + ) + + @property + def requested_entity_secret_content(self) -> Optional[Dict[str, Optional[str]]]: + """Returns the content of the requested entity secret.""" + names = None + if secret_uri := self.relation.data.get(self.relation.app, {}).get( + "requested-entity-secret" + ): + secret = self.framework.model.get_secret(id=secret_uri) + if content := secret.get_content(refresh=True): + if "entity-name" in content: + names = {content["entity-name"]: content.get("password")} + else: + logger.warning("Invalid requested-entity-secret: no entity name") + return names + + @property + def prefix_matching(self) -> Optional[str]: + """Returns the prefix matching strategy that were requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("prefix-matching") + + +class DatabaseEntityRequestedEvent(DatabaseProvidesEvent, EntityProvidesEvent): + """Event emitted when a new entity is requested for use on this relation.""" + + +class DatabaseEntityPermissionsChangedEvent(DatabaseProvidesEvent, EntityProvidesEvent): + """Event emitted when existing entity permissions are changed on this relation.""" + + +class DatabaseProvidesEvents(CharmEvents): + """Database events. + + This class defines the events that the database can emit. + """ + + database_requested = EventSource(DatabaseRequestedEvent) + database_entity_requested = EventSource(DatabaseEntityRequestedEvent) + database_entity_permissions_changed = EventSource(DatabaseEntityPermissionsChangedEvent) + + +class DatabaseRequiresEvent(RelationEventWithSecret): + """Base class for database events.""" + + @property + def database(self) -> Optional[str]: + """Returns the database name.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("database") + + @property + def endpoints(self) -> Optional[str]: + """Returns a comma separated list of read/write endpoints. + + In VM charms, this is the primary's address. + In kubernetes charms, this is the service to the primary pod. + """ + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("endpoints") + + @property + def read_only_endpoints(self) -> Optional[str]: + """Returns a comma separated list of read only endpoints. + + In VM charms, this is the address of all the secondary instances. + In kubernetes charms, this is the service to all replica pod instances. + """ + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("read-only-endpoints") + + @property + def replset(self) -> Optional[str]: + """Returns the replicaset name. + + MongoDB only. + """ + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("replset") + + @property + def uris(self) -> Optional[str]: + """Returns the connection URIs. + + MongoDB, Redis, OpenSearch. + """ + if not self.relation.app: + return None + + if self.secrets_enabled: + secret = self._get_secret("user") + if secret: + return secret.get("uris") + + return self.relation.data[self.relation.app].get("uris") + + @property + def read_only_uris(self) -> Optional[str]: + """Returns the readonly connection URIs.""" + if not self.relation.app: + return None + + if self.secrets_enabled: + secret = self._get_secret("user") + if secret: + return secret.get("read-only-uris") + + return self.relation.data[self.relation.app].get("read-only-uris") + + @property + def version(self) -> Optional[str]: + """Returns the version of the database. + + Version as informed by the database daemon. + """ + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("version") + + @property + def prefix_databases(self) -> Optional[List[str]]: + """Returns a list of databases matching a prefix.""" + if not self.relation.app: + return None + + if prefixed_databases := self.relation.data[self.relation.app].get("prefix-databases"): + return prefixed_databases.split(",") + return [] + + +class DatabaseCreatedEvent(AuthenticationEvent, DatabaseRequiresEvent): + """Event emitted when a new database is created for use on this relation.""" + + +class DatabaseEntityCreatedEvent(EntityRequiresEvent, DatabaseRequiresEvent): + """Event emitted when a new entity is created for use on this relation.""" + + +class DatabaseEndpointsChangedEvent(AuthenticationEvent, DatabaseRequiresEvent): + """Event emitted when the read/write endpoints are changed.""" + + +class DatabaseReadOnlyEndpointsChangedEvent(AuthenticationEvent, DatabaseRequiresEvent): + """Event emitted when the read only endpoints are changed.""" + + +class DatabasePrefixDatabasesChangedEvent(AuthenticationEvent, DatabaseRequiresEvent): + """Event emitted when the prefix databases are changed.""" + + +class DatabaseRequiresEvents(RequirerCharmEvents): + """Database events. + + This class defines the events that the database can emit. + """ + + database_created = EventSource(DatabaseCreatedEvent) + database_entity_created = EventSource(DatabaseEntityCreatedEvent) + endpoints_changed = EventSource(DatabaseEndpointsChangedEvent) + read_only_endpoints_changed = EventSource(DatabaseReadOnlyEndpointsChangedEvent) + prefix_databases_changed = EventSource(DatabasePrefixDatabasesChangedEvent) + + +# Database Provider and Requires + + +class DatabaseProviderData(ProviderData): + """Provider-side data of the database relations.""" + + def __init__( + self, model: Model, relation_name: str, status_schema_path: OptionalPathLike = None + ) -> None: + super().__init__(model, relation_name, status_schema_path=status_schema_path) + + def set_database(self, relation_id: int, database_name: str) -> None: + """Set database name. + + This function writes in the application data bag, therefore, + only the leader unit can call it. + + Args: + relation_id: the identifier for a particular relation. + database_name: database name. + """ + self.update_relation_data(relation_id, {"database": database_name}) + + def set_prefix_databases(self, relation_id: int, databases: List[str]) -> None: + """Set a coma separated list of databases matching a prefix. + + This function writes in the application data bag, therefore, + only the leader unit can call it. + + Args: + relation_id: the identifier for a particular relation. + databases: list of database names matching the requested prefix. + """ + self.update_relation_data(relation_id, {"prefix-databases": ",".join(sorted(databases))}) + + def set_endpoints(self, relation_id: int, connection_strings: str) -> None: + """Set database primary connections. + + This function writes in the application data bag, therefore, + only the leader unit can call it. + + In VM charms, only the primary's address should be passed as an endpoint. + In kubernetes charms, the service endpoint to the primary pod should be + passed as an endpoint. + + Args: + relation_id: the identifier for a particular relation. + connection_strings: database hosts and ports comma separated list. + """ + self.update_relation_data(relation_id, {"endpoints": connection_strings}) + + def set_read_only_endpoints(self, relation_id: int, connection_strings: str) -> None: + """Set database replicas connection strings. + + This function writes in the application data bag, therefore, + only the leader unit can call it. + + Args: + relation_id: the identifier for a particular relation. + connection_strings: database hosts and ports comma separated list. + """ + self.update_relation_data(relation_id, {"read-only-endpoints": connection_strings}) + + def set_replset(self, relation_id: int, replset: str) -> None: + """Set replica set name in the application relation databag. + + MongoDB only. + + Args: + relation_id: the identifier for a particular relation. + replset: replica set name. + """ + self.update_relation_data(relation_id, {"replset": replset}) + + def set_uris(self, relation_id: int, uris: str) -> None: + """Set the database connection URIs in the application relation databag. + + MongoDB, Redis, and OpenSearch only. + + Args: + relation_id: the identifier for a particular relation. + uris: connection URIs. + """ + self.update_relation_data(relation_id, {"uris": uris}) + + def set_read_only_uris(self, relation_id: int, uris: str) -> None: + """Set the database readonly connection URIs in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + uris: connection URIs. + """ + self.update_relation_data(relation_id, {"read-only-uris": uris}) + + def set_version(self, relation_id: int, version: str) -> None: + """Set the database version in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + version: database version. + """ + self.update_relation_data(relation_id, {"version": version}) + + def set_subordinated(self, relation_id: int) -> None: + """Raises the subordinated flag in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + """ + self.update_relation_data(relation_id, {"subordinated": "true"}) + + +class DatabaseProviderEventHandlers(ProviderEventHandlers): + """Provider-side of the database relation handlers.""" + + on = DatabaseProvidesEvents() # pyright: ignore [reportAssignmentType] + + def __init__( + self, charm: CharmBase, relation_data: DatabaseProviderData, unique_key: str = "" + ): + """Manager of base client relations.""" + super().__init__(charm, relation_data, unique_key) + # Just to calm down pyright, it can't parse that the same type is being used in the super() call above + self.relation_data = relation_data + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the relation has changed.""" + super()._on_relation_changed_event(event) + # Leader only + if not self.relation_data.local_unit.is_leader(): + return + + # Check which data has changed to emit customs events. + diff = self._diff(event) + + # Validate entity information is not dynamically changed + self._validate_entity_consistency(event, diff) + + # Emit a database requested event if the setup key (database name) + # was added to the relation databag, but the entity-type key was not. + if "database" in diff.added and "entity-type" not in diff.added: + getattr(self.on, "database_requested").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + # Emit an entity requested event if the setup key (database name) + # was added to the relation databag, in addition to the entity-type key. + if "database" in diff.added and "entity-type" in diff.added: + getattr(self.on, "database_entity_requested").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + # Emit a permissions changed event if the setup key (database name) + # was added to the relation databag, and the entity-permissions key changed. + if ( + "database" not in diff.added + and "entity-type" not in diff.added + and ("entity-permissions" in diff.added or "entity-permissions" in diff.changed) + ): + getattr(self.on, "database_entity_permissions_changed").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + def _on_secret_changed_event(self, event: SecretChangedEvent) -> None: + """Event emitted when the secret has changed.""" + pass + + +class DatabaseProvides(DatabaseProviderData, DatabaseProviderEventHandlers): + """Provider-side of the database relations.""" + + def __init__( + self, charm: CharmBase, relation_name: str, status_schema_path: OptionalPathLike = None + ) -> None: + DatabaseProviderData.__init__( + self, charm.model, relation_name, status_schema_path=status_schema_path + ) + DatabaseProviderEventHandlers.__init__(self, charm, self) + + +class DatabaseRequirerData(RequirerData): + """Requirer-side of the database relation.""" + + def __init__( + self, + model: Model, + relation_name: str, + database_name: str, + extra_user_roles: Optional[str] = None, + relations_aliases: Optional[List[str]] = None, + additional_secret_fields: Optional[List[str]] = [], + external_node_connectivity: bool = False, + extra_group_roles: Optional[str] = None, + entity_type: Optional[str] = None, + entity_permissions: Optional[str] = None, + requested_entity_secret: Optional[str] = None, + requested_entity_name: Optional[str] = None, + requested_entity_password: Optional[str] = None, + prefix_matching: Optional[str] = None, + ): + """Manager of database client relations.""" + super().__init__( + model, + relation_name, + extra_user_roles, + additional_secret_fields, + extra_group_roles, + entity_type, + entity_permissions, + requested_entity_secret, + requested_entity_name, + requested_entity_password, + prefix_matching, + ) + self.database = database_name + self.relations_aliases = relations_aliases + self.external_node_connectivity = external_node_connectivity + + def is_postgresql_plugin_enabled(self, plugin: str, relation_index: int = 0) -> bool: + """Returns whether a plugin is enabled in the database. + + Args: + plugin: name of the plugin to check. + relation_index: optional relation index to check the database + (default: 0 - first relation). + + PostgreSQL only. + """ + # Psycopg 3 is imported locally to avoid the need of its package installation + # when relating to a database charm other than PostgreSQL. + import psycopg + + # Return False if no relation is established. + if len(self.relations) == 0: + return False + + relation_id = self.relations[relation_index].id + host = self.fetch_relation_field(relation_id, "endpoints") + + # Return False if there is no endpoint available. + if host is None: + return False + + host = host.split(":")[0] + + content = self.fetch_relation_data([relation_id], ["username", "password"]).get( + relation_id, {} + ) + user = content.get("username") + password = content.get("password") + + connection_string = ( + f"host='{host}' dbname='{self.database}' user='{user}' password='{password}'" + ) + try: + with psycopg.connect(connection_string) as connection: + with connection.cursor() as cursor: + cursor.execute( + "SELECT TRUE FROM pg_extension WHERE extname=%s::text;", (plugin,) + ) + return cursor.fetchone() is not None + except psycopg.Error as e: + logger.exception( + f"failed to check whether {plugin} plugin is enabled in the database: %s", str(e) + ) + return False + + +class DatabaseRequirerEventHandlers(RequirerEventHandlers): + """Requires-side of the relation.""" + + on = DatabaseRequiresEvents() # pyright: ignore [reportAssignmentType] + + def __init__( + self, charm: CharmBase, relation_data: DatabaseRequirerData, unique_key: str = "" + ): + """Manager of base client relations.""" + super().__init__(charm, relation_data, unique_key) + # Just to keep lint quiet, can't resolve inheritance. The same happened in super().__init__() above + self.relation_data = relation_data + + # Define custom event names for each alias. + if self.relation_data.relations_aliases: + # Ensure the number of aliases does not exceed the maximum + # of connections allowed in the specific relation. + relation_connection_limit = self.charm.meta.requires[ + self.relation_data.relation_name + ].limit + if len(self.relation_data.relations_aliases) != relation_connection_limit: + raise ValueError( + f"The number of aliases must match the maximum number of connections allowed in the relation. " + f"Expected {relation_connection_limit}, got {len(self.relation_data.relations_aliases)}" + ) + + if self.relation_data.relations_aliases: + for relation_alias in self.relation_data.relations_aliases: + self.on.define_event( + f"{relation_alias}_database_created", + DatabaseCreatedEvent, + ) + self.on.define_event( + f"{relation_alias}_database_entity_created", + DatabaseEntityCreatedEvent, + ) + self.on.define_event( + f"{relation_alias}_endpoints_changed", + DatabaseEndpointsChangedEvent, + ) + self.on.define_event( + f"{relation_alias}_read_only_endpoints_changed", + DatabaseReadOnlyEndpointsChangedEvent, + ) + self.on.define_event( + f"{relation_alias}_prefix_databases_changed", + DatabasePrefixDatabasesChangedEvent, + ) + + def _on_secret_changed_event(self, event: SecretChangedEvent): + """Event notifying about a new value of a secret.""" + pass + + def _assign_relation_alias(self, relation_id: int) -> None: + """Assigns an alias to a relation. + + This function writes in the unit data bag. + + Args: + relation_id: the identifier for a particular relation. + """ + # If no aliases were provided, return immediately. + if not self.relation_data.relations_aliases: + return + + # Return if an alias was already assigned to this relation + # (like when there are more than one unit joining the relation). + relation = self.charm.model.get_relation(self.relation_data.relation_name, relation_id) + if relation and relation.data[self.relation_data.local_unit].get("alias"): + return + + # Retrieve the available aliases (the ones that weren't assigned to any relation). + available_aliases = self.relation_data.relations_aliases[:] + for relation in self.charm.model.relations[self.relation_data.relation_name]: + alias = relation.data[self.relation_data.local_unit].get("alias") + if alias: + logger.debug("Alias %s was already assigned to relation %d", alias, relation.id) + available_aliases.remove(alias) + + # Set the alias in the unit relation databag of the specific relation. + relation = self.charm.model.get_relation(self.relation_data.relation_name, relation_id) + if relation: + relation.data[self.relation_data.local_unit].update({"alias": available_aliases[0]}) + + # We need to set relation alias also on the application level so, + # it will be accessible in show-unit juju command, executed for a consumer application unit + if self.relation_data.local_unit.is_leader(): + self.relation_data.update_relation_data(relation_id, {"alias": available_aliases[0]}) + + def _emit_aliased_event(self, event: RelationChangedEvent, event_name: str) -> None: + """Emit an aliased event to a particular relation if it has an alias. + + Args: + event: the relation changed event that was received. + event_name: the name of the event to emit. + """ + alias = self._get_relation_alias(event.relation.id) + if alias: + getattr(self.on, f"{alias}_{event_name}").emit( + event.relation, app=event.app, unit=event.unit + ) + + def _get_relation_alias(self, relation_id: int) -> Optional[str]: + """Returns the relation alias. + + Args: + relation_id: the identifier for a particular relation. + + Returns: + the relation alias or None if the relation was not found. + """ + for relation in self.charm.model.relations[self.relation_data.relation_name]: + if relation.id == relation_id: + return relation.data[self.relation_data.local_unit].get("alias") + return None + + def _on_relation_created_event(self, event: RelationCreatedEvent) -> None: + """Event emitted when the database relation is created.""" + super()._on_relation_created_event(event) + + # If relations aliases were provided, assign one to the relation. + self._assign_relation_alias(event.relation.id) + + # Sets both database and extra user roles in the relation + # if the roles are provided. Otherwise, sets only the database. + if not self.relation_data.local_unit.is_leader(): + return + + event_data = {"database": self.relation_data.database} + + if self.relation_data.extra_user_roles: + event_data["extra-user-roles"] = self.relation_data.extra_user_roles + if self.relation_data.extra_group_roles: + event_data["extra-group-roles"] = self.relation_data.extra_group_roles + if self.relation_data.entity_type: + event_data["entity-type"] = self.relation_data.entity_type + if self.relation_data.entity_permissions: + event_data["entity-permissions"] = self.relation_data.entity_permissions + if self.relation_data.requested_entity_secret: + event_data["requested-entity-secret"] = self.relation_data.requested_entity_secret + if self.relation_data.prefix_matching: + event_data["prefix-matching"] = self.relation_data.prefix_matching + + # Create helper secret if needed + if ( + self.relation_data.requested_entity_name + and not self.relation_data.requested_entity_secret + ): + content = {"entity-name": self.relation_data.requested_entity_name} + if self.relation_data.requested_entity_password: + content["password"] = self.relation_data.requested_entity_password + secret = self.charm.app.add_secret( + content, label=f"{self.model.uuid}-{event.relation.id}-requested-entity" + ) + secret.grant(event.relation) + if not secret.id: + raise SecretError("Secret helper missing Id") + event_data["requested-entity-secret"] = secret.id + + # set external-node-connectivity field + if self.relation_data.external_node_connectivity: + event_data["external-node-connectivity"] = "true" + + self.relation_data.update_relation_data(event.relation.id, event_data) + + def _clear_helper_secret(self, event: RelationChangedEvent, app_databag: Dict) -> None: + """Remove helper secret if set.""" + if ( + self.relation_data.local_unit.is_leader() + and self.relation_data.requested_entity_name + and (secret_uri := app_databag.get("requested-entity-secret")) + ): + try: + secret = self.framework.model.get_secret(id=secret_uri) + secret.remove_all_revisions() + except ModelError: + logger.debug("Unable to remove helper secret") + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the database relation has changed.""" + super()._on_relation_changed_event(event) + is_subordinate = False + remote_unit_data = None + for key in event.relation.data.keys(): + if isinstance(key, Unit) and not key.name.startswith(self.charm.app.name): + remote_unit_data = event.relation.data[key] + elif isinstance(key, Application) and key.name != self.charm.app.name: + is_subordinate = event.relation.data[key].get("subordinated") == "true" + + if is_subordinate: + if not remote_unit_data or remote_unit_data.get("state") != "ready": + return + + # Check which data has changed to emit customs events. + diff = self._diff(event) + + # Register all new secrets with their labels + if any(newval for newval in diff.added if self.relation_data._is_secret_field(newval)): + self.relation_data._register_secrets_to_relation(event.relation, diff.added) + + app_databag = get_encoded_dict(event.relation, event.app, "data") + if app_databag is None: + app_databag = {} + + # Check if the database is created + # (the database charm shared the credentials). + if self._main_credentials_shared(diff) and "entity-type" not in app_databag: + # Emit the default event (the one without an alias). + logger.info("database created at %s", datetime.now()) + getattr(self.on, "database_created").emit( + event.relation, app=event.app, unit=event.unit + ) + + # Emit the aliased event (if any). + self._emit_aliased_event(event, "database_created") + self._clear_helper_secret(event, app_databag) + + # To avoid unnecessary application restarts do not trigger other events. + return + + if self._entity_credentials_shared(diff) and "entity-type" in app_databag: + # Emit the default event (the one without an alias). + logger.info("entity created at %s", datetime.now()) + getattr(self.on, "database_entity_created").emit( + event.relation, app=event.app, unit=event.unit + ) + + # Emit the aliased event (if any). + self._emit_aliased_event(event, "database_entity_created") + self._clear_helper_secret(event, app_databag) + + # To avoid unnecessary application restarts do not trigger other events. + return + + for key, event_name in [ + ("endpoints", "endpoints_changed"), + ("read-only-endpoints", "read_only_endpoints_changed"), + ("prefix-databases", "prefix_databases_changed"), + ]: + # Emit a change event if the key changed. + if key in diff.added or key in diff.changed: + # Emit the default event (the one without an alias). + logger.info("%s changed on %s", key, datetime.now()) + getattr(self.on, event_name).emit(event.relation, app=event.app, unit=event.unit) + + # Emit the aliased event (if any). + self._emit_aliased_event(event, event_name) + + # To avoid unnecessary application restarts do not trigger other events. + return + + +class DatabaseRequires(DatabaseRequirerData, DatabaseRequirerEventHandlers): + """Provider-side of the database relations.""" + + def __init__( + self, + charm: CharmBase, + relation_name: str, + database_name: str, + extra_user_roles: Optional[str] = None, + relations_aliases: Optional[List[str]] = None, + additional_secret_fields: Optional[List[str]] = [], + external_node_connectivity: bool = False, + extra_group_roles: Optional[str] = None, + entity_type: Optional[str] = None, + entity_permissions: Optional[str] = None, + requested_entity_secret: Optional[str] = None, + requested_entity_name: Optional[str] = None, + requested_entity_password: Optional[str] = None, + prefix_matching: Optional[str] = None, + ): + DatabaseRequirerData.__init__( + self, + charm.model, + relation_name, + database_name, + extra_user_roles, + relations_aliases, + additional_secret_fields, + external_node_connectivity, + extra_group_roles, + entity_type, + entity_permissions, + requested_entity_secret, + requested_entity_name, + requested_entity_password, + prefix_matching, + ) + DatabaseRequirerEventHandlers.__init__(self, charm, self) + + +################################################################################ +# Charm-specific Relations Data and Events +################################################################################ + +# Kafka Events + + +class KafkaProvidesEvent(RelationEventWithSecret): + """Base class for Kafka events.""" + + @property + def topic(self) -> Optional[str]: + """Returns the topic that was requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("topic") + + @property + def consumer_group_prefix(self) -> Optional[str]: + """Returns the consumer-group-prefix that was requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("consumer-group-prefix") + + @property + def mtls_cert(self) -> Optional[str]: + """Returns TLS cert of the client.""" + if not self.relation.app: + return None + + if not self.secrets_enabled: + raise SecretsUnavailableError("Secrets unavailable on current Juju version") + + secret_field = f"{PROV_SECRET_PREFIX}{SECRET_GROUPS.MTLS}" + if secret_uri := self.relation.data[self.app].get(secret_field): + secret = self.framework.model.get_secret(id=secret_uri) + content = secret.get_content(refresh=True) + if content: + return content.get("mtls-cert") + + +class KafkaClientMtlsCertUpdatedEvent(KafkaProvidesEvent): + """Event emitted when the mtls relation is updated.""" + + def __init__(self, handle, relation, old_mtls_cert: Optional[str] = None, app=None, unit=None): + super().__init__(handle, relation, app, unit) + + self.old_mtls_cert = old_mtls_cert + + def snapshot(self): + """Return a snapshot of the event.""" + return super().snapshot() | {"old_mtls_cert": self.old_mtls_cert} + + def restore(self, snapshot): + """Restore the event from a snapshot.""" + super().restore(snapshot) + self.old_mtls_cert = snapshot["old_mtls_cert"] + + +class TopicRequestedEvent(KafkaProvidesEvent): + """Event emitted when a new topic is requested for use on this relation.""" + + @property + def extra_user_roles(self) -> Optional[str]: + """Returns the extra user roles that were requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("extra-user-roles") + + +class TopicEntityRequestedEvent(KafkaProvidesEvent, EntityProvidesEvent): + """Event emitted when a new entity is requested for use on this relation.""" + + +class TopicEntityPermissionsChangedEvent(KafkaProvidesEvent, EntityProvidesEvent): + """Event emitted when existing entity permissions are changed on this relation.""" + + +class KafkaProvidesEvents(CharmEvents): + """Kafka events. + + This class defines the events that the Kafka can emit. + """ + + topic_requested = EventSource(TopicRequestedEvent) + topic_entity_requested = EventSource(TopicEntityRequestedEvent) + topic_entity_permissions_changed = EventSource(TopicEntityPermissionsChangedEvent) + mtls_cert_updated = EventSource(KafkaClientMtlsCertUpdatedEvent) + + +class KafkaRequiresEvent(RelationEvent): + """Base class for Kafka events.""" + + @property + def topic(self) -> Optional[str]: + """Returns the topic.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("topic") + + @property + def bootstrap_server(self) -> Optional[str]: + """Returns a comma-separated list of broker uris.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("endpoints") + + @property + def consumer_group_prefix(self) -> Optional[str]: + """Returns the consumer-group-prefix.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("consumer-group-prefix") + + @property + def zookeeper_uris(self) -> Optional[str]: + """Returns a comma separated list of Zookeeper uris.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("zookeeper-uris") + + +class TopicCreatedEvent(AuthenticationEvent, KafkaRequiresEvent): + """Event emitted when a new topic is created for use on this relation.""" + + +class TopicEntityCreatedEvent(EntityRequiresEvent, KafkaRequiresEvent): + """Event emitted when a new entity is created for use on this relation.""" + + +class BootstrapServerChangedEvent(AuthenticationEvent, KafkaRequiresEvent): + """Event emitted when the bootstrap server is changed.""" + + +class KafkaRequiresEvents(RequirerCharmEvents): + """Kafka events. + + This class defines the events that the Kafka can emit. + """ + + topic_created = EventSource(TopicCreatedEvent) + topic_entity_created = EventSource(TopicEntityCreatedEvent) + bootstrap_server_changed = EventSource(BootstrapServerChangedEvent) + + +# Kafka Provides and Requires + + +class KafkaProviderData(ProviderData): + """Provider-side of the Kafka relation.""" + + RESOURCE_FIELD = "topic" + + def __init__( + self, model: Model, relation_name: str, status_schema_path: OptionalPathLike = None + ) -> None: + super().__init__(model, relation_name, status_schema_path=status_schema_path) + + def set_topic(self, relation_id: int, topic: str) -> None: + """Set topic name in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + topic: the topic name. + """ + self.update_relation_data(relation_id, {"topic": topic}) + + def set_bootstrap_server(self, relation_id: int, bootstrap_server: str) -> None: + """Set the bootstrap server in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + bootstrap_server: the bootstrap server address. + """ + self.update_relation_data(relation_id, {"endpoints": bootstrap_server}) + + def set_consumer_group_prefix(self, relation_id: int, consumer_group_prefix: str) -> None: + """Set the consumer group prefix in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + consumer_group_prefix: the consumer group prefix string. + """ + self.update_relation_data(relation_id, {"consumer-group-prefix": consumer_group_prefix}) + + def set_zookeeper_uris(self, relation_id: int, zookeeper_uris: str) -> None: + """Set the zookeeper uris in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + zookeeper_uris: comma-separated list of ZooKeeper server uris. + """ + self.update_relation_data(relation_id, {"zookeeper-uris": zookeeper_uris}) + + +class KafkaProviderEventHandlers(ProviderEventHandlers): + """Provider-side of the Kafka relation.""" + + on = KafkaProvidesEvents() # pyright: ignore [reportAssignmentType] + + def __init__(self, charm: CharmBase, relation_data: KafkaProviderData) -> None: + super().__init__(charm, relation_data) + # Just to keep lint quiet, can't resolve inheritance. The same happened in super().__init__() above + self.relation_data = relation_data + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the relation has changed.""" + super()._on_relation_changed_event(event) + + new_data_keys = list(event.relation.data[event.app].keys()) + if any(newval for newval in new_data_keys if self.relation_data._is_secret_field(newval)): + self.relation_data._register_secrets_to_relation(event.relation, new_data_keys) + + getattr(self.on, "mtls_cert_updated").emit(event.relation, app=event.app, unit=event.unit) + + # Leader only + if not self.relation_data.local_unit.is_leader(): + return + + # Check which data has changed to emit customs events. + diff = self._diff(event) + + # Validate entity information is not dynamically changed + self._validate_entity_consistency(event, diff) + + # Emit a topic requested event if the setup key (topic name) + # was added to the relation databag, but the entity-type key was not. + if "topic" in diff.added and "entity-type" not in diff.added: + getattr(self.on, "topic_requested").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + # Emit an entity requested event if the setup key (topic name) + # was added to the relation databag, in addition to the entity-type key. + if "topic" in diff.added and "entity-type" in diff.added: + getattr(self.on, "topic_entity_requested").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + # Emit a permissions changed event if the setup key (topic name) + # was added to the relation databag, and the entity-permissions key changed. + if ( + "topic" not in diff.added + and "entity-type" not in diff.added + and ("entity-permissions" in diff.added or "entity-permissions" in diff.changed) + ): + getattr(self.on, "topic_entity_permissions_changed").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + def _on_secret_changed_event(self, event: SecretChangedEvent): + """Event notifying about a new value of a secret.""" + if not event.secret.label: + return + + relation = self.relation_data._relation_from_secret_label(event.secret.label) + if not relation: + logging.info( + f"Received secret {event.secret.label} but couldn't parse, seems irrelevant" + ) + return + + if relation.app == self.charm.app: + logging.info("Secret changed event ignored for Secret Owner") + + if relation.name != self.relation_data.relation_name: + logger.debug( + "Ignoring secret-changed from endpoint %s (expected %s)", + relation.name, + self.relation_data.relation_name, + ) + return + + remote_unit = None + for unit in relation.units: + if unit.app != self.charm.app: + remote_unit = unit + + old_mtls_cert = event.secret.get_content().get("mtls-cert") + # mtls-cert is the only secret that can be updated + logger.info("mtls-cert updated") + getattr(self.on, "mtls_cert_updated").emit( + relation, app=relation.app, unit=remote_unit, old_mtls_cert=old_mtls_cert + ) + + +class KafkaProvides(KafkaProviderData, KafkaProviderEventHandlers): + """Provider-side of the Kafka relation.""" + + def __init__( + self, charm: CharmBase, relation_name: str, status_schema_path: OptionalPathLike = None + ) -> None: + KafkaProviderData.__init__( + self, charm.model, relation_name, status_schema_path=status_schema_path + ) + KafkaProviderEventHandlers.__init__(self, charm, self) + + +class KafkaRequirerData(RequirerData): + """Requirer-side of the Kafka relation.""" + + def __init__( + self, + model: Model, + relation_name: str, + topic: str, + extra_user_roles: Optional[str] = None, + consumer_group_prefix: Optional[str] = None, + additional_secret_fields: Optional[List[str]] = [], + mtls_cert: Optional[str] = None, + extra_group_roles: Optional[str] = None, + entity_type: Optional[str] = None, + entity_permissions: Optional[str] = None, + ): + """Manager of Kafka client relations.""" + super().__init__( + model, + relation_name, + extra_user_roles, + additional_secret_fields, + extra_group_roles, + entity_type, + entity_permissions, + ) + self.topic = topic + self.consumer_group_prefix = consumer_group_prefix or "" + self.mtls_cert = mtls_cert + + @staticmethod + def is_topic_value_acceptable(topic_value: str) -> bool: + """Check whether the given Kafka topic value is acceptable.""" + return "*" not in topic_value[:3] + + @property + def topic(self): + """Topic to use in Kafka.""" + return self._topic + + @topic.setter + def topic(self, value): + if not self.is_topic_value_acceptable(value): + raise ValueError(f"Error on topic '{value}', unacceptable value.") + self._topic = value + + def set_mtls_cert(self, relation_id: int, mtls_cert: str) -> None: + """Set the mtls cert in the application relation databag / secret. + + Args: + relation_id: the identifier for a particular relation. + mtls_cert: mtls cert. + """ + self.update_relation_data(relation_id, {"mtls-cert": mtls_cert}) + + +class KafkaRequirerEventHandlers(RequirerEventHandlers): + """Requires-side of the Kafka relation.""" + + on = KafkaRequiresEvents() # pyright: ignore [reportAssignmentType] + + def __init__(self, charm: CharmBase, relation_data: KafkaRequirerData) -> None: + super().__init__(charm, relation_data) + # Just to keep lint quiet, can't resolve inheritance. The same happened in super().__init__() above + self.relation_data = relation_data + + def _on_relation_created_event(self, event: RelationCreatedEvent) -> None: + """Event emitted when the Kafka relation is created.""" + super()._on_relation_created_event(event) + + if not self.relation_data.local_unit.is_leader(): + return + + # Sets topic, extra user roles, and "consumer-group-prefix" in the relation + relation_data = {"topic": self.relation_data.topic} + + if self.relation_data.mtls_cert: + relation_data["mtls-cert"] = self.relation_data.mtls_cert + + if self.relation_data.consumer_group_prefix: + relation_data["consumer-group-prefix"] = self.relation_data.consumer_group_prefix + + if self.relation_data.extra_user_roles: + relation_data["extra-user-roles"] = self.relation_data.extra_user_roles + if self.relation_data.extra_group_roles: + relation_data["extra-group-roles"] = self.relation_data.extra_group_roles + if self.relation_data.entity_type: + relation_data["entity-type"] = self.relation_data.entity_type + if self.relation_data.entity_permissions: + relation_data["entity-permissions"] = self.relation_data.entity_permissions + + self.relation_data.update_relation_data(event.relation.id, relation_data) + + def _on_secret_changed_event(self, event: SecretChangedEvent): + """Event notifying about a new value of a secret.""" + pass + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the Kafka relation has changed.""" + super()._on_relation_changed_event(event) + + # Check which data has changed to emit customs events. + diff = self._diff(event) + + # Check if the topic is created + # (the Kafka charm shared the credentials). + + # Register all new secrets with their labels + if any(newval for newval in diff.added if self.relation_data._is_secret_field(newval)): + self.relation_data._register_secrets_to_relation(event.relation, diff.added) + + app_databag = get_encoded_dict(event.relation, event.app, "data") + if app_databag is None: + app_databag = {} + + if self._main_credentials_shared(diff) and "entity-type" not in app_databag: + # Emit the default event (the one without an alias). + logger.info("topic created at %s", datetime.now()) + getattr(self.on, "topic_created").emit(event.relation, app=event.app, unit=event.unit) + + # To avoid unnecessary application restarts do not trigger other events. + return + + if self._entity_credentials_shared(diff) and "entity-type" in app_databag: + # Emit the default event (the one without an alias). + logger.info("entity created at %s", datetime.now()) + getattr(self.on, "topic_entity_created").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + # Emit an endpoints (bootstrap-server) changed event if the Kafka endpoints + # added or changed this info in the relation databag. + if "endpoints" in diff.added or "endpoints" in diff.changed: + # Emit the default event (the one without an alias). + logger.info("endpoints changed on %s", datetime.now()) + getattr(self.on, "bootstrap_server_changed").emit( + event.relation, app=event.app, unit=event.unit + ) # here check if this is the right design + + # To avoid unnecessary application restarts do not trigger other events. + return + + +class KafkaRequires(KafkaRequirerData, KafkaRequirerEventHandlers): + """Provider-side of the Kafka relation.""" + + def __init__( + self, + charm: CharmBase, + relation_name: str, + topic: str, + extra_user_roles: Optional[str] = None, + consumer_group_prefix: Optional[str] = None, + additional_secret_fields: Optional[List[str]] = [], + mtls_cert: Optional[str] = None, + extra_group_roles: Optional[str] = None, + entity_type: Optional[str] = None, + entity_permissions: Optional[str] = None, + ) -> None: + KafkaRequirerData.__init__( + self, + charm.model, + relation_name, + topic, + extra_user_roles=extra_user_roles, + consumer_group_prefix=consumer_group_prefix, + additional_secret_fields=additional_secret_fields, + mtls_cert=mtls_cert, + extra_group_roles=extra_group_roles, + entity_type=entity_type, + entity_permissions=entity_permissions, + ) + KafkaRequirerEventHandlers.__init__(self, charm, self) + + +# Karapace related events + + +class KarapaceProvidesEvent(RelationEvent): + """Base class for Karapace events.""" + + @property + def subject(self) -> Optional[str]: + """Returns the subject that was requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("subject") + + +class SubjectRequestedEvent(KarapaceProvidesEvent): + """Event emitted when a new subject is requested for use on this relation.""" + + @property + def extra_user_roles(self) -> Optional[str]: + """Returns the extra user roles that were requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("extra-user-roles") + + +class SubjectEntityRequestedEvent(KarapaceProvidesEvent, EntityProvidesEvent): + """Event emitted when a new entity is requested for use on this relation.""" + + +class SubjectEntityPermissionsChangedEvent(KarapaceProvidesEvent, EntityProvidesEvent): + """Event emitted when existing entity permissions are changed on this relation.""" + + +class KarapaceProvidesEvents(CharmEvents): + """Karapace events. + + This class defines the events that the Karapace can emit. + """ + + subject_requested = EventSource(SubjectRequestedEvent) + subject_entity_requested = EventSource(SubjectEntityRequestedEvent) + subject_entity_permissions_changed = EventSource(SubjectEntityPermissionsChangedEvent) + + +class KarapaceRequiresEvent(RelationEvent): + """Base class for Karapace events.""" + + @property + def subject(self) -> Optional[str]: + """Returns the subject.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("subject") + + @property + def endpoints(self) -> Optional[str]: + """Returns a comma-separated list of broker uris.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("endpoints") + + +class SubjectAllowedEvent(AuthenticationEvent, KarapaceRequiresEvent): + """Event emitted when a new subject ACL is created for use on this relation.""" + + +class SubjectEntityCreatedEvent(EntityRequiresEvent, KarapaceRequiresEvent): + """Event emitted when a new entity is created for use on this relation.""" + + +class EndpointsChangedEvent(AuthenticationEvent, KarapaceRequiresEvent): + """Event emitted when the endpoints are changed.""" + + +class KarapaceRequiresEvents(RequirerCharmEvents): + """Karapace events. + + This class defines the events that Karapace can emit. + """ + + subject_allowed = EventSource(SubjectAllowedEvent) + subject_entity_created = EventSource(SubjectEntityCreatedEvent) + server_changed = EventSource(EndpointsChangedEvent) + + +# Karapace Provides and Requires + + +class KarapaceProviderData(ProviderData): + """Provider-side of the Karapace relation.""" + + RESOURCE_FIELD = "subject" + + def __init__( + self, model: Model, relation_name: str, status_schema_path: OptionalPathLike = None + ) -> None: + super().__init__(model, relation_name, status_schema_path=status_schema_path) + + def set_subject(self, relation_id: int, subject: str) -> None: + """Set subject name in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + subject: the subject name. + """ + self.update_relation_data(relation_id, {"subject": subject}) + + def set_endpoint(self, relation_id: int, endpoint: str) -> None: + """Set the endpoint in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + endpoint: the server address. + """ + self.update_relation_data(relation_id, {"endpoints": endpoint}) + + +class KarapaceProviderEventHandlers(ProviderEventHandlers): + """Provider-side of the Karapace relation.""" + + on = KarapaceProvidesEvents() # pyright: ignore [reportAssignmentType] + + def __init__(self, charm: CharmBase, relation_data: KarapaceProviderData) -> None: + super().__init__(charm, relation_data) + # Just to keep lint quiet, can't resolve inheritance. The same happened in super().__init__() above + self.relation_data = relation_data + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the relation has changed.""" + super()._on_relation_changed_event(event) + + # Leader only + if not self.relation_data.local_unit.is_leader(): + return + + # Check which data has changed to emit customs events. + diff = self._diff(event) + + # Validate entity information is not dynamically changed + self._validate_entity_consistency(event, diff) + + # Emit a subject requested event if the setup key (subject name) + # was added to the relation databag, but the entity-type key was not. + if "subject" in diff.added and "entity-type" not in diff.added: + getattr(self.on, "subject_requested").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + # Emit an entity requested event if the setup key (subject name) + # was added to the relation databag, in addition to the entity-type key. + if "subject" in diff.added and "entity-type" in diff.added: + getattr(self.on, "subject_entity_requested").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + # Emit a permissions changed event if the setup key (subject name) + # was added to the relation databag, and the entity-permissions key changed. + if ( + "subject" not in diff.added + and "entity-type" not in diff.added + and ("entity-permissions" in diff.added or "entity-permissions" in diff.changed) + ): + getattr(self.on, "subject_entity_permissions_changed").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + def _on_secret_changed_event(self, event: SecretChangedEvent): + """Event notifying about a new value of a secret.""" + pass + + +class KarapaceProvides(KarapaceProviderData, KarapaceProviderEventHandlers): + """Provider-side of the Karapace relation.""" + + def __init__( + self, charm: CharmBase, relation_name: str, status_schema_path: OptionalPathLike = None + ) -> None: + KarapaceProviderData.__init__( + self, charm.model, relation_name, status_schema_path=status_schema_path + ) + KarapaceProviderEventHandlers.__init__(self, charm, self) + + +class KarapaceRequirerData(RequirerData): + """Requirer-side of the Karapace relation.""" + + def __init__( + self, + model: Model, + relation_name: str, + subject: str, + extra_user_roles: Optional[str] = None, + additional_secret_fields: Optional[List[str]] = [], + extra_group_roles: Optional[str] = None, + entity_type: Optional[str] = None, + entity_permissions: Optional[str] = None, + ): + """Manager of Karapace client relations.""" + super().__init__( + model, + relation_name, + extra_user_roles, + additional_secret_fields, + extra_group_roles, + entity_type, + entity_permissions, + ) + self.subject = subject + + @property + def subject(self): + """Topic to use in Karapace.""" + return self._subject + + @subject.setter + def subject(self, value): + # Avoid wildcards + if value == "*": + raise ValueError(f"Error on subject '{value}', cannot be a wildcard.") + self._subject = value + + +class KarapaceRequirerEventHandlers(RequirerEventHandlers): + """Requires-side of the Karapace relation.""" + + on = KarapaceRequiresEvents() # pyright: ignore [reportAssignmentType] + + def __init__(self, charm: CharmBase, relation_data: KarapaceRequirerData) -> None: + super().__init__(charm, relation_data) + # Just to keep lint quiet, can't resolve inheritance. The same happened in super().__init__() above + self.relation_data = relation_data + + def _on_relation_created_event(self, event: RelationCreatedEvent) -> None: + """Event emitted when the Karapace relation is created.""" + super()._on_relation_created_event(event) + + if not self.relation_data.local_unit.is_leader(): + return + + # Sets subject and extra user roles + relation_data = {"subject": self.relation_data.subject} + + if self.relation_data.extra_user_roles: + relation_data["extra-user-roles"] = self.relation_data.extra_user_roles + if self.relation_data.extra_group_roles: + relation_data["extra-group-roles"] = self.relation_data.extra_group_roles + if self.relation_data.entity_type: + relation_data["entity-type"] = self.relation_data.entity_type + if self.relation_data.entity_permissions: + relation_data["entity-permissions"] = self.relation_data.entity_permissions + + self.relation_data.update_relation_data(event.relation.id, relation_data) + + def _on_secret_changed_event(self, event: SecretChangedEvent): + """Event notifying about a new value of a secret.""" + pass + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the Karapace relation has changed.""" + super()._on_relation_changed_event(event) + + # Check which data has changed to emit customs events. + diff = self._diff(event) + + # Check if the subject ACLs are created + # (the Karapace charm shared the credentials). + + # Register all new secrets with their labels + if any(newval for newval in diff.added if self.relation_data._is_secret_field(newval)): + self.relation_data._register_secrets_to_relation(event.relation, diff.added) + + app_databag = get_encoded_dict(event.relation, event.app, "data") + if app_databag is None: + app_databag = {} + + if self._main_credentials_shared(diff) and "entity-type" not in app_databag: + # Emit the default event (the one without an alias). + logger.info("subject ACL created at %s", datetime.now()) + getattr(self.on, "subject_allowed").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + if self._entity_credentials_shared(diff) and "entity-type" in app_databag: + # Emit the default event (the one without an alias). + logger.info("entity created at %s", datetime.now()) + getattr(self.on, "subject_entity_created").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + # Emit an endpoints changed event if the Karapace endpoints added or changed + # this info in the relation databag. + if "endpoints" in diff.added or "endpoints" in diff.changed: + # Emit the default event (the one without an alias). + logger.info("endpoints changed on %s", datetime.now()) + getattr(self.on, "server_changed").emit( + event.relation, app=event.app, unit=event.unit + ) # here check if this is the right design + + # To avoid unnecessary application restarts do not trigger other events. + return + + +class KarapaceRequires(KarapaceRequirerData, KarapaceRequirerEventHandlers): + """Provider-side of the Karapace relation.""" + + def __init__( + self, + charm: CharmBase, + relation_name: str, + subject: str, + extra_user_roles: Optional[str] = None, + additional_secret_fields: Optional[List[str]] = [], + extra_group_roles: Optional[str] = None, + entity_type: Optional[str] = None, + entity_permissions: Optional[str] = None, + ) -> None: + KarapaceRequirerData.__init__( + self, + charm.model, + relation_name, + subject, + extra_user_roles, + additional_secret_fields, + extra_group_roles, + entity_type, + entity_permissions, + ) + KarapaceRequirerEventHandlers.__init__(self, charm, self) + + +# Kafka Connect Events + + +class KafkaConnectProvidesEvent(RelationEvent): + """Base class for Kafka Connect Provider events.""" + + @property + def plugin_url(self) -> Optional[str]: + """Returns the REST endpoint URL which serves the connector plugin.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("plugin-url") + + +class IntegrationRequestedEvent(KafkaConnectProvidesEvent): + """Event emitted when a new integrator boots up and is ready to serve the connector plugin.""" + + +class KafkaConnectProvidesEvents(CharmEvents): + """Kafka Connect Provider Events.""" + + integration_requested = EventSource(IntegrationRequestedEvent) + + +class KafkaConnectRequiresEvent(AuthenticationEvent): + """Base class for Kafka Connect Requirer events.""" + + @property + def plugin_url(self) -> Optional[str]: + """Returns the REST endpoint URL which serves the connector plugin.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("plugin-url") + + +class IntegrationCreatedEvent(KafkaConnectRequiresEvent): + """Event emitted when the credentials are created for this integrator.""" + + +class IntegrationEndpointsChangedEvent(KafkaConnectRequiresEvent): + """Event emitted when Kafka Connect REST endpoints change.""" + + +class KafkaConnectRequiresEvents(RequirerCharmEvents): + """Kafka Connect Requirer Events.""" + + integration_created = EventSource(IntegrationCreatedEvent) + integration_endpoints_changed = EventSource(IntegrationEndpointsChangedEvent) + + +class KafkaConnectProviderData(ProviderData): + """Provider-side of the Kafka Connect relation.""" + + RESOURCE_FIELD = "plugin-url" + + def __init__( + self, model: Model, relation_name: str, status_schema_path: OptionalPathLike = None + ) -> None: + super().__init__(model, relation_name, status_schema_path=status_schema_path) + + def set_endpoints(self, relation_id: int, endpoints: str) -> None: + """Sets REST endpoints of the Kafka Connect service.""" + self.update_relation_data(relation_id, {"endpoints": endpoints}) + + +class KafkaConnectProviderEventHandlers(EventHandlers): + """Provider-side implementation of the Kafka Connect event handlers.""" + + on = KafkaConnectProvidesEvents() # pyright: ignore [reportAssignmentType] + + def __init__(self, charm: CharmBase, relation_data: KafkaConnectProviderData) -> None: + super().__init__(charm, relation_data) + self.relation_data = relation_data + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the relation has changed.""" + # Leader only + if not self.relation_data.local_unit.is_leader(): + return + + # Check which data has changed to emit customs events. + diff = self._diff(event) + + if "plugin-url" in diff.added: + getattr(self.on, "integration_requested").emit( + event.relation, app=event.app, unit=event.unit + ) + + def _on_secret_changed_event(self, event: SecretChangedEvent): + """Event notifying about a new value of a secret.""" + pass + + +class KafkaConnectProvides(KafkaConnectProviderData, KafkaConnectProviderEventHandlers): + """Provider-side implementation of the Kafka Connect relation.""" + + def __init__( + self, charm: CharmBase, relation_name: str, status_schema_path: OptionalPathLike = None + ) -> None: + KafkaConnectProviderData.__init__( + self, charm.model, relation_name, status_schema_path=status_schema_path + ) + KafkaConnectProviderEventHandlers.__init__(self, charm, self) + + +# Sentinel value passed from Kafka Connect requirer side when it does not need to serve any plugins. +PLUGIN_URL_NOT_REQUIRED: Final[str] = "NOT-REQUIRED" + + +class KafkaConnectRequirerData(RequirerData): + """Requirer-side of the Kafka Connect relation.""" + + def __init__( + self, + model: Model, + relation_name: str, + plugin_url: str, + extra_user_roles: Optional[str] = None, + additional_secret_fields: Optional[List[str]] = [], + ): + """Manager of Kafka client relations.""" + super().__init__( + model, + relation_name, + extra_user_roles=extra_user_roles, + additional_secret_fields=additional_secret_fields, + ) + self.plugin_url = plugin_url + + @property + def plugin_url(self): + """The REST endpoint URL which serves the connector plugin.""" + return self._plugin_url + + @plugin_url.setter + def plugin_url(self, value): + self._plugin_url = value + + +class KafkaConnectRequirerEventHandlers(RequirerEventHandlers): + """Requirer-side of the Kafka Connect relation.""" + + on = KafkaConnectRequiresEvents() # pyright: ignore [reportAssignmentType] + + def __init__(self, charm: CharmBase, relation_data: KafkaConnectRequirerData) -> None: + super().__init__(charm, relation_data) + self.relation_data = relation_data + + def _on_relation_created_event(self, event: RelationCreatedEvent) -> None: + """Event emitted when the Kafka Connect relation is created.""" + super()._on_relation_created_event(event) + + if not self.relation_data.local_unit.is_leader(): + return + + relation_data = {"plugin-url": self.relation_data.plugin_url} + self.relation_data.update_relation_data(event.relation.id, relation_data) + + def _on_secret_changed_event(self, event: SecretChangedEvent): + """Event notifying about a new value of a secret.""" + pass + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the Kafka Connect relation has changed.""" + super()._on_relation_changed_event(event) + + # Check which data has changed to emit customs events. + diff = self._diff(event) + + # Register all new secrets with their labels + if any(newval for newval in diff.added if self.relation_data._is_secret_field(newval)): + self.relation_data._register_secrets_to_relation(event.relation, diff.added) + + if self._main_credentials_shared(diff): + logger.info("integration created at %s", datetime.now()) + getattr(self.on, "integration_created").emit( + event.relation, app=event.app, unit=event.unit + ) + return + + # Emit an endpoints changed event if the provider added or + # changed this info in the relation databag. + if "endpoints" in diff.added or "endpoints" in diff.changed: + # Emit the default event (the one without an alias). + logger.info("endpoints changed on %s", datetime.now()) + getattr(self.on, "integration_endpoints_changed").emit( + event.relation, app=event.app, unit=event.unit + ) + return + + +class KafkaConnectRequires(KafkaConnectRequirerData, KafkaConnectRequirerEventHandlers): + """Requirer-side implementation of the Kafka Connect relation.""" + + def __init__( + self, + charm: CharmBase, + relation_name: str, + plugin_url: str, + extra_user_roles: Optional[str] = None, + additional_secret_fields: Optional[List[str]] = [], + ) -> None: + KafkaConnectRequirerData.__init__( + self, + charm.model, + relation_name, + plugin_url, + extra_user_roles=extra_user_roles, + additional_secret_fields=additional_secret_fields, + ) + KafkaConnectRequirerEventHandlers.__init__(self, charm, self) + + +# Opensearch related events + + +class OpenSearchProvidesEvent(RelationEvent): + """Base class for OpenSearch events.""" + + @property + def index(self) -> Optional[str]: + """Returns the index that was requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("index") + + +class IndexRequestedEvent(OpenSearchProvidesEvent): + """Event emitted when a new index is requested for use on this relation.""" + + @property + def extra_user_roles(self) -> Optional[str]: + """Returns the extra user roles that were requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("extra-user-roles") + + +class IndexEntityRequestedEvent(OpenSearchProvidesEvent, EntityProvidesEvent): + """Event emitted when a new entity is requested for use on this relation.""" + + +class IndexEntityPermissionsChangedEvent(OpenSearchProvidesEvent, EntityProvidesEvent): + """Event emitted when existing entity permissions are changed on this relation.""" + + +class OpenSearchProvidesEvents(CharmEvents): + """OpenSearch events. + + This class defines the events that OpenSearch can emit. + """ + + index_requested = EventSource(IndexRequestedEvent) + index_entity_requested = EventSource(IndexEntityRequestedEvent) + index_entity_permissions_changed = EventSource(IndexEntityPermissionsChangedEvent) + + +class OpenSearchRequiresEvent(DatabaseRequiresEvent): + """Base class for OpenSearch requirer events.""" + + +class IndexCreatedEvent(AuthenticationEvent, OpenSearchRequiresEvent): + """Event emitted when a new index is created for use on this relation.""" + + +class IndexEntityCreatedEvent(EntityRequiresEvent, OpenSearchRequiresEvent): + """Event emitted when a new index is created for use on this relation.""" + + +class OpenSearchRequiresEvents(RequirerCharmEvents): + """OpenSearch events. + + This class defines the events that the opensearch requirer can emit. + """ + + index_created = EventSource(IndexCreatedEvent) + index_entity_created = EventSource(IndexEntityCreatedEvent) + endpoints_changed = EventSource(DatabaseEndpointsChangedEvent) + authentication_updated = EventSource(AuthenticationEvent) + + +# OpenSearch Provides and Requires Objects + + +class OpenSearchProvidesData(ProviderData): + """Provider-side of the OpenSearch relation.""" + + RESOURCE_FIELD = "index" + + def __init__( + self, model: Model, relation_name: str, status_schema_path: OptionalPathLike = None + ) -> None: + super().__init__(model, relation_name, status_schema_path=status_schema_path) + + def set_index(self, relation_id: int, index: str) -> None: + """Set the index in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + index: the index as it is _created_ on the provider charm. This needn't match the + requested index, and can be used to present a different index name if, for example, + the requested index is invalid. + """ + self.update_relation_data(relation_id, {"index": index}) + + def set_endpoints(self, relation_id: int, endpoints: str) -> None: + """Set the endpoints in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + endpoints: the endpoint addresses for opensearch nodes. + """ + self.update_relation_data(relation_id, {"endpoints": endpoints}) + + def set_version(self, relation_id: int, version: str) -> None: + """Set the opensearch version in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + version: database version. + """ + self.update_relation_data(relation_id, {"version": version}) + + +class OpenSearchProvidesEventHandlers(ProviderEventHandlers): + """Provider-side of the OpenSearch relation.""" + + on = OpenSearchProvidesEvents() # pyright: ignore[reportAssignmentType] + + def __init__(self, charm: CharmBase, relation_data: OpenSearchProvidesData) -> None: + super().__init__(charm, relation_data) + # Just to keep lint quiet, can't resolve inheritance. The same happened in super().__init__() above + self.relation_data = relation_data + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the relation has changed.""" + super()._on_relation_changed_event(event) + + # Leader only + if not self.relation_data.local_unit.is_leader(): + return + + # Check which data has changed to emit customs events. + diff = self._diff(event) + + # Validate entity information is not dynamically changed + self._validate_entity_consistency(event, diff) + + # Emit an index requested event if the setup key (index name) + # was added to the relation databag, but the entity-type key was not. + if "index" in diff.added and "entity-type" not in diff.added: + getattr(self.on, "index_requested").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + # Emit an entity requested event if the setup key (index name) + # was added to the relation databag, in addition to the entity-type key. + if "index" in diff.added and "entity-type" in diff.added: + getattr(self.on, "index_entity_requested").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + # Emit a permissions changed event if the setup key (index name) + # was added to the relation databag, and the entity-permissions key changed. + if ( + "index" not in diff.added + and "entity-type" not in diff.added + and ("entity-permissions" in diff.added or "entity-permissions" in diff.changed) + ): + getattr(self.on, "index_entity_permissions_changed").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + def _on_secret_changed_event(self, event: SecretChangedEvent) -> None: + """Event emitted when the relation data has changed.""" + pass + + +class OpenSearchProvides(OpenSearchProvidesData, OpenSearchProvidesEventHandlers): + """Provider-side of the OpenSearch relation.""" + + def __init__( + self, charm: CharmBase, relation_name: str, status_schema_path: OptionalPathLike = None + ) -> None: + OpenSearchProvidesData.__init__( + self, charm.model, relation_name, status_schema_path=status_schema_path + ) + OpenSearchProvidesEventHandlers.__init__(self, charm, self) + + +class OpenSearchRequiresData(RequirerData): + """Requires data side of the OpenSearch relation.""" + + def __init__( + self, + model: Model, + relation_name: str, + index: str, + extra_user_roles: Optional[str] = None, + additional_secret_fields: Optional[List[str]] = [], + extra_group_roles: Optional[str] = None, + entity_type: Optional[str] = None, + entity_permissions: Optional[str] = None, + ): + """Manager of OpenSearch client relations.""" + super().__init__( + model, + relation_name, + extra_user_roles, + additional_secret_fields, + extra_group_roles, + entity_type, + entity_permissions, + ) + self.index = index + + +class OpenSearchRequiresEventHandlers(RequirerEventHandlers): + """Requires events side of the OpenSearch relation.""" + + on = OpenSearchRequiresEvents() # pyright: ignore[reportAssignmentType] + + def __init__(self, charm: CharmBase, relation_data: OpenSearchRequiresData) -> None: + super().__init__(charm, relation_data) + # Just to keep lint quiet, can't resolve inheritance. The same happened in super().__init__() above + self.relation_data = relation_data + + def _on_relation_created_event(self, event: RelationCreatedEvent) -> None: + """Event emitted when the OpenSearch relation is created.""" + super()._on_relation_created_event(event) + + if not self.relation_data.local_unit.is_leader(): + return + + # Sets both index and extra user roles in the relation if the roles are provided. + # Otherwise, sets only the index. + data = {"index": self.relation_data.index} + + if self.relation_data.extra_user_roles: + data["extra-user-roles"] = self.relation_data.extra_user_roles + if self.relation_data.extra_group_roles: + data["extra-group-roles"] = self.relation_data.extra_group_roles + if self.relation_data.entity_type: + data["entity-type"] = self.relation_data.entity_type + if self.relation_data.entity_permissions: + data["entity-permissions"] = self.relation_data.entity_permissions + + self.relation_data.update_relation_data(event.relation.id, data) + + def _on_secret_changed_event(self, event: SecretChangedEvent): + """Event notifying about a new value of a secret.""" + if not event.secret.label: + return + + relation = self.relation_data._relation_from_secret_label(event.secret.label) + if not relation: + logging.info( + f"Received secret {event.secret.label} but couldn't parse, seems irrelevant" + ) + return + + if relation.name != self.relation_data.relation_name: + logger.debug( + "Ignoring secret-changed from endpoint %s (expected %s)", + relation.name, + self.relation_data.relation_name, + ) + return + + if relation.app == self.charm.app: + logging.info("Secret changed event ignored for Secret Owner") + + remote_unit = None + for unit in relation.units: + if unit.app != self.charm.app: + remote_unit = unit + + logger.info("authentication updated") + getattr(self.on, "authentication_updated").emit( + relation, app=relation.app, unit=remote_unit + ) + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the OpenSearch relation has changed. + + This event triggers individual custom events depending on the changing relation. + """ + super()._on_relation_changed_event(event) + + # Check which data has changed to emit customs events. + diff = self._diff(event) + + # Register all new secrets with their labels + if any(newval for newval in diff.added if self.relation_data._is_secret_field(newval)): + self.relation_data._register_secrets_to_relation(event.relation, diff.added) + + secret_field_user = self.relation_data._generate_secret_field_name(SECRET_GROUPS.USER) + secret_field_tls = self.relation_data._generate_secret_field_name(SECRET_GROUPS.TLS) + updates = {"username", "password", "tls", "tls-ca", secret_field_user, secret_field_tls} + if len(set(diff._asdict().keys()) - updates) < len(diff): + logger.info("authentication updated at: %s", datetime.now()) + getattr(self.on, "authentication_updated").emit( + event.relation, app=event.app, unit=event.unit + ) + + app_databag = get_encoded_dict(event.relation, event.app, "data") + if app_databag is None: + app_databag = {} + + # Check if the index is created + # (the OpenSearch charm shares the credentials). + if self._main_credentials_shared(diff) and "entity-type" not in app_databag: + # Emit the default event (the one without an alias). + logger.info("index created at: %s", datetime.now()) + getattr(self.on, "index_created").emit(event.relation, app=event.app, unit=event.unit) + + # To avoid unnecessary application restarts do not trigger other events. + return + + if self._entity_credentials_shared(diff) and "entity-type" in app_databag: + # Emit the default event (the one without an alias). + logger.info("entity created at: %s", datetime.now()) + getattr(self.on, "index_entity_created").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + # Emit a endpoints changed event if the OpenSearch application + # added or changed this info in the relation databag. + if "endpoints" in diff.added or "endpoints" in diff.changed: + # Emit the default event (the one without an alias). + logger.info("endpoints changed on %s", datetime.now()) + getattr(self.on, "endpoints_changed").emit( + event.relation, app=event.app, unit=event.unit + ) + + # To avoid unnecessary application restarts do not trigger other events. + return + + +class OpenSearchRequires(OpenSearchRequiresData, OpenSearchRequiresEventHandlers): + """Requires-side of the OpenSearch relation.""" + + def __init__( + self, + charm: CharmBase, + relation_name: str, + index: str, + extra_user_roles: Optional[str] = None, + additional_secret_fields: Optional[List[str]] = [], + extra_group_roles: Optional[str] = None, + entity_type: Optional[str] = None, + entity_permissions: Optional[str] = None, + ) -> None: + OpenSearchRequiresData.__init__( + self, + charm.model, + relation_name, + index, + extra_user_roles, + additional_secret_fields, + extra_group_roles, + entity_type, + entity_permissions, + ) + OpenSearchRequiresEventHandlers.__init__(self, charm, self) + + +# Etcd related events + + +class EtcdProviderEvent(RelationEventWithSecret): + """Base class for Etcd events.""" + + @property + def prefix(self) -> Optional[str]: + """Returns the index that was requested.""" + if not self.relation.app: + return None + + return self.relation.data[self.relation.app].get("prefix") + + @property + def mtls_cert(self) -> Optional[str]: + """Returns TLS cert of the client.""" + if not self.relation.app: + return None + + if not self.secrets_enabled: + raise SecretsUnavailableError("Secrets unavailable on current Juju version") + + secret_field = f"{PROV_SECRET_PREFIX}{SECRET_GROUPS.MTLS}" + if secret_uri := self.relation.data[self.app].get(secret_field): + secret = self.framework.model.get_secret(id=secret_uri) + content = secret.get_content(refresh=True) + if content: + return content.get("mtls-cert") + + +class MTLSCertUpdatedEvent(EtcdProviderEvent): + """Event emitted when the mtls relation is updated.""" + + def __init__(self, handle, relation, old_mtls_cert: Optional[str] = None, app=None, unit=None): + super().__init__(handle, relation, app, unit) + + self.old_mtls_cert = old_mtls_cert + + def snapshot(self): + """Return a snapshot of the event.""" + return super().snapshot() | {"old_mtls_cert": self.old_mtls_cert} + + def restore(self, snapshot): + """Restore the event from a snapshot.""" + super().restore(snapshot) + self.old_mtls_cert = snapshot["old_mtls_cert"] + + +class EtcdProviderEvents(CharmEvents): + """Etcd events. + + This class defines the events that Etcd can emit. + """ + + mtls_cert_updated = EventSource(MTLSCertUpdatedEvent) + + +class EtcdReadyEvent(AuthenticationEvent, DatabaseRequiresEvent): + """Event emitted when the etcd relation is ready to be consumed.""" + + +class EtcdRequirerEvents(RequirerCharmEvents): + """Etcd events. + + This class defines the events that the etcd requirer can emit. + """ + + endpoints_changed = EventSource(DatabaseEndpointsChangedEvent) + etcd_ready = EventSource(EtcdReadyEvent) + + +# Etcd Provides and Requires Objects + + +class EtcdProviderData(ProviderData): + """Provider-side of the Etcd relation.""" + + RESOURCE_FIELD = "prefix" + + def __init__( + self, model: Model, relation_name: str, status_schema_path: OptionalPathLike = None + ) -> None: + super().__init__(model, relation_name, status_schema_path=status_schema_path) + + def set_uris(self, relation_id: int, uris: str) -> None: + """Set the database connection URIs in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + uris: connection URIs. + """ + self.update_relation_data(relation_id, {"uris": uris}) + + def set_endpoints(self, relation_id: int, endpoints: str) -> None: + """Set the endpoints in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + endpoints: the endpoint addresses for etcd nodes "ip:port" format. + """ + self.update_relation_data(relation_id, {"endpoints": endpoints}) + + def set_version(self, relation_id: int, version: str) -> None: + """Set the etcd version in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + version: etcd API version. + """ + self.update_relation_data(relation_id, {"version": version}) + + def set_tls_ca(self, relation_id: int, tls_ca: str) -> None: + """Set the TLS CA in the application relation databag. + + Args: + relation_id: the identifier for a particular relation. + tls_ca: TLS certification authority. + """ + self.update_relation_data(relation_id, {"tls-ca": tls_ca, "tls": "True"}) + + +class EtcdProviderEventHandlers(ProviderEventHandlers): + """Provider-side of the Etcd relation.""" + + on = EtcdProviderEvents() # pyright: ignore[reportAssignmentType] + + def __init__(self, charm: CharmBase, relation_data: EtcdProviderData) -> None: + super().__init__(charm, relation_data) + # Just to keep lint quiet, can't resolve inheritance. The same happened in super().__init__() above + self.relation_data = relation_data + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the relation has changed.""" + super()._on_relation_changed_event(event) + # register all new secrets with their labels + new_data_keys = list(event.relation.data[event.app].keys()) + if any(newval for newval in new_data_keys if self.relation_data._is_secret_field(newval)): + self.relation_data._register_secrets_to_relation(event.relation, new_data_keys) + + # Check which data has changed to emit customs events. + diff = self._diff(event) + + # Validate entity information is not dynamically changed + self._validate_entity_consistency(event, diff) + + getattr(self.on, "mtls_cert_updated").emit(event.relation, app=event.app, unit=event.unit) + return + + def _on_secret_changed_event(self, event: SecretChangedEvent): + """Event notifying about a new value of a secret.""" + if not event.secret.label: + return + + relation = self.relation_data._relation_from_secret_label(event.secret.label) + if not relation: + logging.info( + f"Received secret {event.secret.label} but couldn't parse, seems irrelevant" + ) + return + + if relation.name != self.relation_data.relation_name: + logger.debug( + "Ignoring secret-changed from endpoint %s (expected %s)", + relation.name, + self.relation_data.relation_name, + ) + return + + if relation.app == self.charm.app: + logging.info("Secret changed event ignored for Secret Owner") + + remote_unit = None + for unit in relation.units: + if unit.app != self.charm.app: + remote_unit = unit + + old_mtls_cert = event.secret.get_content().get("mtls-cert") + # mtls-cert is the only secret that can be updated + logger.info("mtls-cert updated") + getattr(self.on, "mtls_cert_updated").emit( + relation, app=relation.app, unit=remote_unit, old_mtls_cert=old_mtls_cert + ) + + +class EtcdProvides(EtcdProviderData, EtcdProviderEventHandlers): + """Provider-side of the Etcd relation.""" + + def __init__( + self, charm: CharmBase, relation_name: str, status_schema_path: OptionalPathLike = None + ) -> None: + EtcdProviderData.__init__( + self, charm.model, relation_name, status_schema_path=status_schema_path + ) + EtcdProviderEventHandlers.__init__(self, charm, self) + if not self.secrets_enabled: + raise SecretsUnavailableError("Secrets unavailable on current Juju version") + + +class EtcdRequirerData(RequirerData): + """Requires data side of the Etcd relation.""" + + def __init__( + self, + model: Model, + relation_name: str, + prefix: str, + mtls_cert: Optional[str], + extra_user_roles: Optional[str] = None, + additional_secret_fields: Optional[List[str]] = [], + extra_group_roles: Optional[str] = None, + entity_type: Optional[str] = None, + entity_permissions: Optional[str] = None, + ): + """Manager of Etcd client relations.""" + super().__init__( + model, + relation_name, + extra_user_roles, + additional_secret_fields, + extra_group_roles, + entity_type, + entity_permissions, + ) + self.prefix = prefix + self.mtls_cert = mtls_cert + + def set_mtls_cert(self, relation_id: int, mtls_cert: str) -> None: + """Set the mtls cert in the application relation databag / secret. + + Args: + relation_id: the identifier for a particular relation. + mtls_cert: mtls cert. + """ + self.update_relation_data(relation_id, {"mtls-cert": mtls_cert}) + + +class EtcdRequirerEventHandlers(RequirerEventHandlers): + """Requires events side of the Etcd relation.""" + + on = EtcdRequirerEvents() # pyright: ignore[reportAssignmentType] + + def __init__(self, charm: CharmBase, relation_data: EtcdRequirerData) -> None: + super().__init__(charm, relation_data) + # Just to keep lint quiet, can't resolve inheritance. The same happened in super().__init__() above + self.relation_data = relation_data + + def _on_relation_created_event(self, event: RelationCreatedEvent) -> None: + """Event emitted when the Etcd relation is created.""" + super()._on_relation_created_event(event) + + payload = { + "prefix": self.relation_data.prefix, + } + if self.relation_data.mtls_cert: + payload["mtls-cert"] = self.relation_data.mtls_cert + + self.relation_data.update_relation_data( + event.relation.id, + payload, + ) + + def _on_relation_changed_event(self, event: RelationChangedEvent) -> None: + """Event emitted when the Etcd relation has changed. + + This event triggers individual custom events depending on the changing relation. + """ + super()._on_relation_changed_event(event) + + # Check which data has changed to emit customs events. + diff = self._diff(event) + # Register all new secrets with their labels + if any(newval for newval in diff.added if self.relation_data._is_secret_field(newval)): + self.relation_data._register_secrets_to_relation(event.relation, diff.added) + + secret_field_user = self.relation_data._generate_secret_field_name(SECRET_GROUPS.USER) + secret_field_tls = self.relation_data._generate_secret_field_name(SECRET_GROUPS.TLS) + + # Emit a endpoints changed event if the etcd application added or changed this info + # in the relation databag. + if "endpoints" in diff.added or "endpoints" in diff.changed: + # Emit the default event (the one without an alias). + logger.info("endpoints changed on %s", datetime.now()) + getattr(self.on, "endpoints_changed").emit( + event.relation, app=event.app, unit=event.unit + ) + + if ( + secret_field_tls in diff.added + or secret_field_tls in diff.changed + or secret_field_user in diff.added + or secret_field_user in diff.changed + or "username" in diff.added + or "username" in diff.changed + ): + # Emit the default event (the one without an alias). + logger.info("etcd ready on %s", datetime.now()) + getattr(self.on, "etcd_ready").emit(event.relation, app=event.app, unit=event.unit) + + def _on_secret_changed_event(self, event: SecretChangedEvent): + """Event notifying about a new value of a secret.""" + if not event.secret.label: + return + + relation = self.relation_data._relation_from_secret_label(event.secret.label) + if not relation: + logging.info( + f"Received secret {event.secret.label} but couldn't parse, seems irrelevant" + ) + return + + if relation.app == self.charm.app: + logging.info("Secret changed event ignored for Secret Owner") + + if relation.name != self.relation_data.relation_name: + logger.debug( + "Ignoring secret-changed from endpoint %s (expected %s)", + relation.name, + self.relation_data.relation_name, + ) + return + + remote_unit = None + for unit in relation.units: + if unit.app != self.charm.app: + remote_unit = unit + + # secret-user or secret-tls updated + logger.info("etcd_ready updated") + getattr(self.on, "etcd_ready").emit(relation, app=relation.app, unit=remote_unit) + + +class EtcdRequires(EtcdRequirerData, EtcdRequirerEventHandlers): + """Requires-side of the Etcd relation.""" + + def __init__( + self, + charm: CharmBase, + relation_name: str, + prefix: str, + mtls_cert: Optional[str], + extra_user_roles: Optional[str] = None, + additional_secret_fields: Optional[List[str]] = [], + extra_group_roles: Optional[str] = None, + entity_type: Optional[str] = None, + entity_permissions: Optional[str] = None, + ) -> None: + EtcdRequirerData.__init__( + self, + charm.model, + relation_name, + prefix, + mtls_cert, + extra_user_roles, + additional_secret_fields, + extra_group_roles, + entity_type, + entity_permissions, + ) + EtcdRequirerEventHandlers.__init__(self, charm, self) + if not self.secrets_enabled: + raise SecretsUnavailableError("Secrets unavailable on current Juju version") diff --git a/tests/integration/clients/requirer-charm/metadata.yaml b/tests/integration/clients/requirer-charm/metadata.yaml new file mode 100644 index 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+[metadata] +lock-version = "2.1" +python-versions = "^3.12" +content-hash = "d095ff73efc0dc57e3b33f3047e0fa09db0dc1c9c623eef5c266fde0af3f810d" diff --git a/tests/integration/clients/requirer-charm/pyproject.toml b/tests/integration/clients/requirer-charm/pyproject.toml new file mode 100644 index 0000000..379a802 --- /dev/null +++ b/tests/integration/clients/requirer-charm/pyproject.toml @@ -0,0 +1,16 @@ +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. + +[tool.poetry] +package-mode = false +requires-poetry = ">=2.0.0" + +[tool.poetry.dependencies] +python = "^3.12" +ops = "3.5.0" +pydantic = ">2.12.3" +charmlibs-interfaces-tls-certificates = ">1.0" +dpcharmlibs-interfaces = ">=1.0.2" +# TODO replace with official release once build from source is possible +# https://github.com/valkey-io/valkey-glide/pull/5202 +valkey-glide = { git = "https://github.com/skourta/valkey-glide", subdirectory = "python/glide-async", branch = "add-build-rs-to-async-client" } diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py new file mode 100755 index 0000000..c0e38c7 --- /dev/null +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -0,0 +1,292 @@ +#!/usr/bin/env python3 +# Copyright 2026 rene.radoi@canonical.com +# See LICENSE file for licensing details. + +"""Charm the application.""" + +import asyncio +import logging +import socket + +import ops +from charmlibs.interfaces.tls_certificates import ( + CertificateRequestAttributes, + TLSCertificatesRequiresV4, +) +from charms.data_platform_libs.v0.data_interfaces import DatabaseCreatedEvent, DatabaseRequires +from client import ValkeyClient +from dpcharmlibs.interfaces import ( + DataContractV1, + RequirerCommonModel, + ResourceCreatedEvent, + ResourceEndpointsChangedEvent, + ResourceProviderModel, + ResourceRequirerEventHandler, + ValkeyResponseModel, + build_model, +) + +logger = logging.getLogger(__name__) + +SERVICE_NAME = "some-service" # Name of Pebble service that runs in the workload container. + + +class RequirerCharm(ops.CharmBase): + """Charm that acts as client for Valkey.""" + + def __init__(self, framework: ops.Framework): + super().__init__(framework) + + if self.config.get("data-interfaces-version") == 0: + self.data_interfaces_version = 0 + else: + self.data_interfaces_version = 1 + + self.certificates = TLSCertificatesRequiresV4( + self, + "certificates", + certificate_requests=[ + CertificateRequestAttributes( + common_name="requirer-charm", + sans_ip=frozenset({socket.gethostbyname(socket.gethostname())}), + sans_dns=frozenset({self.unit.name, socket.gethostname()}), + ) + ], + ) + + if self.data_interfaces_version == 1: + self.valkey_interface = ResourceRequirerEventHandler( + charm=self, + relation_name="valkey-client", + requests=[ + RequirerCommonModel(resource="requirer-charm:*"), + RequirerCommonModel(resource="*"), + ], + response_model=ValkeyResponseModel, + ) + self.framework.observe( + self.valkey_interface.on.resource_created, self._on_resource_created + ) + else: + self.valkey_interface = DatabaseRequires( + charm=self, + relation_name="valkey-client", + database_name="requirer-charm:*", + ) + self.framework.observe( + self.valkey_interface.on.database_created, self._on_database_created + ) + + # Event observers + framework.observe(self.on.start, self._on_start) + framework.observe(self.on.set_action, self._on_set_action) + framework.observe(self.on.get_action, self._on_get_action) + framework.observe(self.on.get_credentials_action, self._on_get_credentials_action) + framework.observe(self.valkey_interface.on.endpoints_changed, self._on_endpoints_changed) + + @property + def valkey_relation(self) -> ops.Relation | None: + if not (relations := self.valkey_interface.relations): + return None + + return relations[0] + + @property + def remote_responses(self) -> list[ResourceProviderModel] | None: + """Return the remote response model.""" + if not self.valkey_relation: + return None + + return build_model( + self.valkey_interface.interface.repository( + self.valkey_relation.id, self.valkey_relation.app + ), + DataContractV1[ResourceProviderModel], + ).requests + + @property + def credentials(self) -> dict[str | None, str | None]: + """Retrieve the client credentials provided by Valkey.""" + if self.data_interfaces_version == 0: + if not self.valkey_relation: + return {"": None} + + return { + self.valkey_interface.fetch_relation_field( + self.valkey_relation.id, "username" + ): self.valkey_interface.fetch_relation_field(self.valkey_relation.id, "password") + } + + remote_responses = self.remote_responses + if not remote_responses: + return {"": None} + + credentials = {} + for response in remote_responses: + credentials.update({response.username: response.password}) + + return credentials + + @property + def primary_endpoint(self) -> str | None: + """Retrieve the write-endpoints provided by Valkey.""" + if self.data_interfaces_version == 0: + if not self.valkey_relation: + return None + + return self.valkey_interface.fetch_relation_field(self.valkey_relation.id, "endpoints") + + remote_responses = self.remote_responses + if not remote_responses: + return None + + return remote_responses[0].endpoints + + @property + def tls_enabled(self) -> bool: + """Retrieve the tls flag provided by Valkey.""" + if self.data_interfaces_version == 0: + if not self.valkey_relation: + return False + + return ( + self.valkey_interface.fetch_relation_field(self.valkey_relation.id, "tls") + == "true" + ) + + remote_responses = self.remote_responses + if not remote_responses: + return False + + return remote_responses[0].tls + + @property + def tls_ca_cert(self) -> str | None: + """Retrieve the tls CA cert provided by Valkey.""" + if self.data_interfaces_version == 0: + if not self.valkey_relation: + return None + + return self.valkey_interface.fetch_relation_field(self.valkey_relation.id, "tls-ca") + + remote_responses = self.remote_responses + if not remote_responses: + return None + + return remote_responses[0].tls_ca + + @property + def certificate(self) -> str | None: + certificates, _ = self.certificates.get_assigned_certificates() + if not certificates: + return None + + return certificates[0].certificate.raw + + @property + def private_key(self) -> str | None: + _, private_key = self.certificates.get_assigned_certificates() + if not private_key: + return None + + return private_key.raw + + def get_valkey_client(self, user: str) -> ValkeyClient: + """Get a valkey client.""" + return ValkeyClient( + username=user, + password=self.credentials.get(user), + host=self.primary_endpoint.split(":")[0], + port=int(self.primary_endpoint.split(":")[1]), + tls_cert=self.certificate.encode() if self.tls_enabled else None, + tls_key=self.private_key.encode() if self.tls_enabled else None, + tls_ca_cert=self.tls_ca_cert.encode() if self.tls_enabled else None, + ) + + def _on_start(self, event: ops.StartEvent) -> None: + """Handle start event.""" + self.unit.status = ops.ActiveStatus() + + def _on_set_action(self, event: ops.ActionEvent) -> None: + """Handle set action.""" + if not self.valkey_relation: + event.fail("The action can be run only after relation is created.") + event.set_results({"ok": False}) + return + + key = str(event.params.get("key", "")) + value = str(event.params.get("value", "")) + user = str(event.params.get("user", "")) + if not key or not value or not user: + event.fail("Parameters key, value and user are required.") + event.set_results({"ok": False}) + return + + client = self.get_valkey_client(user) + try: + asyncio.run(client.set_key(key, value)) + event.set_results({"ok": True}) + except Exception as e: + event.fail(f"Failed to write data: {e}") + logger.error("Failed to write data: %s", e) + + def _on_get_action(self, event: ops.ActionEvent) -> None: + """Handle get action.""" + if not self.valkey_relation: + event.fail("The action can be run only after relation is created.") + event.set_results({"ok": False}) + return + + key = str(event.params.get("key", "")) + user = str(event.params.get("user", "")) + if not key or not user: + event.fail("Parameters key and user are required.") + event.set_results({"ok": False}) + return + + client = self.get_valkey_client(user) + try: + value = asyncio.run(client.get_key(key)) + event.set_results( + { + "ok": True, + "result": value, + } + ) + except Exception as e: + event.fail(f"Failed to read data: {e}") + logger.error("Failed to read data: %s", e) + + def _on_get_credentials_action(self, event: ops.ActionEvent) -> None: + """Return the credentials an action response.""" + if not self.valkey_relation: + event.fail("The action can be run only after relation is created.") + event.set_results({"ok": False}) + return + + credentials = self.credentials + usernames = ",".join(list(credentials.keys())) + event.set_results( + { + "ok": True, + "usernames": usernames, + } + ) + + def _on_resource_created(self, event: ResourceCreatedEvent[ResourceProviderModel]) -> None: + """Handle resource created event.""" + logger.info("Resource created") + + def _on_endpoints_changed( + self, event: ResourceEndpointsChangedEvent[ResourceProviderModel] + ) -> None: + """Handle endpoints changed event.""" + logger.info("Valkey endpoints have been changed") + + def _on_database_created(self, event: DatabaseCreatedEvent) -> None: + """Handle the event triggered by data-interfaces v0.""" + logger.info("Database created") + + +if __name__ == "__main__": # pragma: nocover + ops.main(RequirerCharm) diff --git a/tests/integration/clients/requirer-charm/src/client.py b/tests/integration/clients/requirer-charm/src/client.py new file mode 100644 index 0000000..cd3105c --- /dev/null +++ b/tests/integration/clients/requirer-charm/src/client.py @@ -0,0 +1,79 @@ +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. + +"""ValkeyClient utility class to connect to valkey servers.""" + +import logging + +from glide import ( + AdvancedGlideClientConfiguration, + GlideClient, + GlideClientConfiguration, + NodeAddress, + ServerCredentials, + TlsAdvancedConfiguration, +) + +logger = logging.getLogger(__name__) + + +class ValkeyClient: + """Handle valkey client connections.""" + + def __init__( + self, + username: str, + password: str, + host: str, + port: int, + tls_cert: bytes | None, + tls_key: bytes | None, + tls_ca_cert: bytes | None, + ): + self.host = host + self.port = port + self.user = username + self.password = password + self.tls_cert = tls_cert + self.tls_key = tls_key + self.tls_ca_cert = tls_ca_cert + + async def create_client(self) -> GlideClient: + """Initialize the Valkey client.""" + credentials = ServerCredentials(username=self.user, password=self.password) + + tls_config = TlsAdvancedConfiguration( + client_cert_pem=self.tls_cert if self.tls_cert else None, + client_key_pem=self.tls_key if self.tls_cert else None, + root_pem_cacerts=self.tls_ca_cert if self.tls_cert else None, + ) + + client_config = GlideClientConfiguration( + [NodeAddress(host=self.host, port=self.port)], + use_tls=True if self.tls_cert else False, + credentials=credentials, + request_timeout=1000, # in milliseconds + advanced_config=AdvancedGlideClientConfiguration(tls_config=tls_config), + ) + + return await GlideClient.create(client_config) + + async def set_key(self, key: str, value: str) -> None: + """Write a key to the Valkey database.""" + client = await self.create_client() + + try: + await client.set(key, value) + logger.info("Write to Valkey successful") + finally: + await client.close() + + async def get_key(self, key: str) -> str: + """Retrieve a key from the Valkey database.""" + client = await self.create_client() + + try: + value = await client.get(key) + return value.decode() + finally: + await client.close() From 62201f9403cfc573c2523ae6551cc972c4221a0c Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 10 Apr 2026 10:43:18 +0000 Subject: [PATCH 216/282] change health status from running to normal and use databag to sync --- src/core/models.py | 2 ++ src/events/base_events.py | 29 +++++------------------------ src/managers/cluster.py | 8 +++++++- src/statuses.py | 6 ++---- 4 files changed, 16 insertions(+), 29 deletions(-) diff --git a/src/core/models.py b/src/core/models.py index 5299081..85e1933 100644 --- a/src/core/models.py +++ b/src/core/models.py @@ -74,6 +74,8 @@ class PeerUnitModel(PeerModel): client_cert_ready: bool = Field(default=False) tls_ca_rotation: str = Field(default="") tls_certificate_expiring: bool = Field(default=False) + is_valkey_healthy: bool = Field(default=True) + is_sentinel_healthy: bool = Field(default=True) class RelationState: diff --git a/src/events/base_events.py b/src/events/base_events.py index b77643c..0f6fec6 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -584,7 +584,7 @@ def _set_state_for_going_away(self) -> None: } ) - self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY}) + self.charm.state.unit_server.update({"scale_down_state": ScaleDownState.GOING_AWAY.value}) def _on_restart_workload(self, event: RestartWorkloadEvent) -> None: """Handle the restart_workload event.""" @@ -609,36 +609,17 @@ def _on_restart_workload(self, event: RestartWorkloadEvent) -> None: if event.restart_valkey and not self.charm.cluster_manager.is_healthy( check_replica_sync=False ): - self.charm.status.set_running_status( - ClusterStatuses.VALKEY_UNHEALTHY_RESTART.value, - scope="unit", - component_name=self.charm.cluster_manager.name, - statuses_state=self.charm.state.statuses, - ) + self.charm.state.unit_server.update({"is_valkey_healthy": False}) event.defer() return - - self.charm.state.statuses.delete( - ClusterStatuses.VALKEY_UNHEALTHY_RESTART.value, - scope="unit", - component=self.charm.cluster_manager.name, - ) + self.charm.state.unit_server.update({"is_valkey_healthy": True}) if event.restart_sentinel and not self.charm.sentinel_manager.is_healthy(): - self.charm.status.set_running_status( - ClusterStatuses.SENTINEL_UNHEALTHY_RESTART.value, - scope="unit", - component_name=self.charm.cluster_manager.name, - statuses_state=self.charm.state.statuses, - ) + self.charm.state.unit_server.update({"is_sentinel_healthy": False}) event.defer() return - self.charm.state.statuses.delete( - ClusterStatuses.SENTINEL_UNHEALTHY_RESTART.value, - scope="unit", - component=self.charm.cluster_manager.name, - ) + self.charm.state.unit_server.update({"is_sentinel_healthy": True}) except ValkeyServicesFailedToStartError as e: logger.error(e) event.defer() diff --git a/src/managers/cluster.py b/src/managers/cluster.py index b6b4009..6256b69 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -19,7 +19,7 @@ from core.base_workload import WorkloadBase from core.cluster_state import ClusterState from literals import CharmUsers, ScaleDownState, StartState -from statuses import CharmStatuses, ScaleDownStatuses, StartStatuses +from statuses import CharmStatuses, ClusterStatuses, ScaleDownStatuses, StartStatuses logger = logging.getLogger(__name__) @@ -129,6 +129,12 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje if scale_down_status := self._get_scale_down_status(): status_list.append(scale_down_status) + if not self.state.unit_server.model.is_valkey_healthy: + status_list.append(ClusterStatuses.VALKEY_UNHEALTHY_RESTART.value) + + if not self.state.unit_server.model.is_sentinel_healthy: + status_list.append(ClusterStatuses.SENTINEL_UNHEALTHY_RESTART.value) + return status_list or [CharmStatuses.ACTIVE_IDLE.value] def _get_start_status(self) -> StatusObject | None: diff --git a/src/statuses.py b/src/statuses.py index f658d04..ef1c3f1 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -36,14 +36,12 @@ class ClusterStatuses(Enum): VALKEY_UNHEALTHY_RESTART = StatusObject( status="maintenance", - message="Valkey unhealthy after restart", - running="async", + message="Valkey unhealthy", ) SENTINEL_UNHEALTHY_RESTART = StatusObject( status="maintenance", - message="Sentinel unhealthy after restart", - running="async", + message="Sentinel unhealthy", ) From 3ca02118cbd7081f22fb8f6f5197d91c78ce48e6 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 10 Apr 2026 10:46:26 +0000 Subject: [PATCH 217/282] fine tune exception handling --- src/events/base_events.py | 35 +++++++++++++++++++---------------- 1 file changed, 19 insertions(+), 16 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 0f6fec6..c697f4a 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -605,26 +605,29 @@ def _on_restart_workload(self, event: RestartWorkloadEvent) -> None: self.charm.workload.restart(self.charm.workload.valkey_service) if event.restart_sentinel: self.charm.sentinel_manager.restart_service() - - if event.restart_valkey and not self.charm.cluster_manager.is_healthy( - check_replica_sync=False - ): - self.charm.state.unit_server.update({"is_valkey_healthy": False}) - event.defer() - return - self.charm.state.unit_server.update({"is_valkey_healthy": True}) - - if event.restart_sentinel and not self.charm.sentinel_manager.is_healthy(): - self.charm.state.unit_server.update({"is_sentinel_healthy": False}) - event.defer() - return - - self.charm.state.unit_server.update({"is_sentinel_healthy": True}) except ValkeyServicesFailedToStartError as e: logger.error(e) + restart_lock.release_lock() event.defer() - finally: + return + + if event.restart_valkey and not self.charm.cluster_manager.is_healthy( + check_replica_sync=False + ): + self.charm.state.unit_server.update({"is_valkey_healthy": False}) restart_lock.release_lock() + event.defer() + return + self.charm.state.unit_server.update({"is_valkey_healthy": True}) + + if event.restart_sentinel and not self.charm.sentinel_manager.is_healthy(): + self.charm.state.unit_server.update({"is_sentinel_healthy": False}) + restart_lock.release_lock() + event.defer() + return + + self.charm.state.unit_server.update({"is_sentinel_healthy": True}) + restart_lock.release_lock() def _reconfigure_quorum_if_necessary(self) -> None: """Reconfigure the sentinel quorum if it does not match the current cluster size.""" From fbefb839d661bccf0178c4155263da20cec1c96d Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 10 Apr 2026 11:17:19 +0000 Subject: [PATCH 218/282] add cw --- .../clients/requirer-charm/charmcraft.yaml | 62 +++++ .../clients/requirer-charm/src/charm.py | 208 ++++++++++++++- .../requirer-charm/src/continuous_writes.py | 241 ++++++++++++++++++ 3 files changed, 507 insertions(+), 4 deletions(-) create mode 100644 tests/integration/clients/requirer-charm/src/continuous_writes.py diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index 9a44523..54b8deb 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -106,9 +106,71 @@ actions: get-credentials: description: Action for fetching all available credentials from relations. + start-continuous-writes: + description: > + Start a background daemon that continuously writes incrementing integers + to a Valkey list using the relation-provided credentials. The daemon + survives between action calls and can be stopped with stop-continuous-writes. + params: + sleep-interval: + description: Seconds to sleep between writes (float, default 1.0) + type: number + default: 1.0 + + stop-continuous-writes: + description: > + Stop the continuous-writes daemon and return the last written value and + total count of successful writes. Use this after a disruptive operation + to retrieve stats for consistency verification. + config: options: data-interfaces-version: description: Version of data interfaces to use type: int default: 1 + connection-source: + description: > + Whether to read connection info from the Valkey relation ("relation") + or from the config options below ("config"). + type: string + default: relation + endpoints: + description: > + Comma-separated list of Valkey endpoints in "host:port" form. + Required when connection-source is "config". + type: string + default: "" + username: + description: > + Valkey username. Required when connection-source is "config". + type: string + default: "" + password: + description: > + Valkey password. Required when connection-source is "config". + type: string + default: "" + tls-enabled: + description: > + Whether TLS is enabled. Used when connection-source is "config". + type: boolean + default: false + ca-cert: + description: > + PEM-encoded CA certificate. Required when connection-source is "config" + and tls-enabled is true. + type: string + default: "" + cert: + description: > + PEM-encoded client certificate. Required when connection-source is + "config" and tls-enabled is true. + type: string + default: "" + key: + description: > + PEM-encoded client private key. Required when connection-source is + "config" and tls-enabled is true. + type: string + default: "" diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index c0e38c7..59c9603 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -5,8 +5,16 @@ """Charm the application.""" import asyncio +import enum +import json import logging +import os +import signal import socket +import subprocess +import sys +import time +from pathlib import Path import ops from charmlibs.interfaces.tls_certificates import ( @@ -15,6 +23,7 @@ ) from charms.data_platform_libs.v0.data_interfaces import DatabaseCreatedEvent, DatabaseRequires from client import ValkeyClient +from continuous_writes import DaemonConfig from dpcharmlibs.interfaces import ( DataContractV1, RequirerCommonModel, @@ -31,6 +40,49 @@ SERVICE_NAME = "some-service" # Name of Pebble service that runs in the workload container. +def _wait_for_pid_exit( + pid: int, poll_interval: int = 1, max_attempts: int = 10, force_kill: bool = True +) -> bool: + """Wait for a process to exit. + + Returns True if the process exited cleanly within max_attempts, False otherwise. + If force_kill is True and the process is still running after max_attempts, sends SIGKILL. + """ + for attempt in range(max_attempts): + time.sleep(poll_interval) + try: + os.kill(pid, 0) # signal 0 checks existence without sending a signal + except ProcessLookupError: + logger.info("Daemon PID %d exited after %d second(s).", pid, attempt * poll_interval) + return True + except OSError: + pass # EPERM — process exists but unowned; treat as still running + + logger.warning( + "Daemon PID %d did not exit after %d second(s).", + pid, + max_attempts * poll_interval, + ) + if force_kill: + logger.warning("Sending SIGKILL to daemon PID %d.", pid) + try: + os.kill(pid, signal.SIGKILL) + except OSError: + pass + return False + + +class CWPath(enum.Enum): + """Paths used by the continuous-writes daemon.""" + + CONFIG = Path("/tmp/cw_config.json") + STATE = Path("/tmp/cw_state.json") + PID = Path("/tmp/cw_daemon.pid") + CERT = Path("/tmp/cw_client.pem") + KEY = Path("/tmp/cw_client.key") + CA = Path("/tmp/cw_client_ca.pem") + + class RequirerCharm(ops.CharmBase): """Charm that acts as client for Valkey.""" @@ -82,6 +134,12 @@ def __init__(self, framework: ops.Framework): framework.observe(self.on.set_action, self._on_set_action) framework.observe(self.on.get_action, self._on_get_action) framework.observe(self.on.get_credentials_action, self._on_get_credentials_action) + framework.observe( + self.on.start_continuous_writes_action, self._on_start_continuous_writes_action + ) + framework.observe( + self.on.stop_continuous_writes_action, self._on_stop_continuous_writes_action + ) framework.observe(self.valkey_interface.on.endpoints_changed, self._on_endpoints_changed) @property @@ -104,9 +162,19 @@ def remote_responses(self) -> list[ResourceProviderModel] | None: DataContractV1[ResourceProviderModel], ).requests + @property + def _use_config(self) -> bool: + """Return True when connection-source is set to "config".""" + return self.config.get("connection-source") == "config" + @property def credentials(self) -> dict[str | None, str | None]: - """Retrieve the client credentials provided by Valkey.""" + """Retrieve the client credentials from config or relation.""" + if self._use_config: + username = str(self.config["username"]) or None + password = str(self.config["password"]) or None + return {username: password} + if self.data_interfaces_version == 0: if not self.valkey_relation: return {"": None} @@ -129,7 +197,10 @@ def credentials(self) -> dict[str | None, str | None]: @property def primary_endpoint(self) -> str | None: - """Retrieve the write-endpoints provided by Valkey.""" + """Retrieve the write-endpoints from config or relation.""" + if self._use_config: + return str(self.config["endpoints"]) or None + if self.data_interfaces_version == 0: if not self.valkey_relation: return None @@ -144,7 +215,10 @@ def primary_endpoint(self) -> str | None: @property def tls_enabled(self) -> bool: - """Retrieve the tls flag provided by Valkey.""" + """Retrieve the TLS flag from config or relation.""" + if self._use_config: + return bool(self.config.get("tls-enabled")) + if self.data_interfaces_version == 0: if not self.valkey_relation: return False @@ -162,7 +236,10 @@ def tls_enabled(self) -> bool: @property def tls_ca_cert(self) -> str | None: - """Retrieve the tls CA cert provided by Valkey.""" + """Retrieve the TLS CA cert from config or relation.""" + if self._use_config: + return str(self.config["ca-cert"]) or None + if self.data_interfaces_version == 0: if not self.valkey_relation: return None @@ -177,6 +254,10 @@ def tls_ca_cert(self) -> str | None: @property def certificate(self) -> str | None: + """Retrieve the client certificate from config or the certificates relation.""" + if self._use_config: + return str(self.config["cert"]) or None + certificates, _ = self.certificates.get_assigned_certificates() if not certificates: return None @@ -185,6 +266,10 @@ def certificate(self) -> str | None: @property def private_key(self) -> str | None: + """Retrieve the client private key from config or the certificates relation.""" + if self._use_config: + return str(self.config["key"]) or None + _, private_key = self.certificates.get_assigned_certificates() if not private_key: return None @@ -273,6 +358,121 @@ def _on_get_credentials_action(self, event: ops.ActionEvent) -> None: } ) + def _on_start_continuous_writes_action(self, event: ops.ActionEvent) -> None: + """Handle start-continuous-writes action.""" + if not self._use_config and not self.valkey_relation: + event.fail( + "The action can be run only after a relation is created or connection-source is set to 'config'." + ) + return + + if not self.primary_endpoint: + event.fail("No primary endpoint available.") + return + + if not self.credentials: + event.fail("No credentials available.") + return + + if self.tls_enabled: + if not self.certificate or not self.private_key or not self.tls_ca_cert: + event.fail("TLS is enabled but certificates are not yet available.") + return + + sleep_interval = float(event.params.get("sleep-interval", 1.0)) + + # Stop any running daemon first + if CWPath.PID.value.exists(): + try: + pid = int(CWPath.PID.value.read_text().strip()) + os.kill(pid, signal.SIGTERM) + time.sleep(1) + except (ProcessLookupError, ValueError, OSError): + pass + CWPath.PID.value.unlink(missing_ok=True) + + # Clear previous state so the new run starts fresh + CWPath.STATE.value.unlink(missing_ok=True) + + # Resolve the first available credential from the relation + username, password = next(iter(self.credentials.items())) + + tls_config = None + if self.tls_enabled: + CWPath.CERT.value.write_bytes(self.certificate.encode()) + CWPath.KEY.value.write_bytes(self.private_key.encode()) + CWPath.CA.value.write_bytes(self.tls_ca_cert.encode()) + from continuous_writes import TlsConfig + + tls_config = TlsConfig( + cert_path=str(CWPath.CERT.value), + key_path=str(CWPath.KEY.value), + ca_path=str(CWPath.CA.value), + ) + + DaemonConfig( + endpoints=self.primary_endpoint, + username=username, + password=password, + tls=tls_config, + initial_count=0, + ).to_file(CWPath.CONFIG.value) + + daemon_script = Path(__file__).parent / "continuous_writes.py" + proc = subprocess.Popen( + [sys.executable, str(daemon_script), str(CWPath.CONFIG.value), str(sleep_interval)], + stdout=subprocess.DEVNULL, + stderr=subprocess.DEVNULL, + start_new_session=True, + ) + logger.info("Started continuous-writes daemon with PID %d", proc.pid) + event.set_results({"ok": True, "pid": proc.pid}) + + def _on_stop_continuous_writes_action(self, event: ops.ActionEvent) -> None: + """Handle stop-continuous-writes action.""" + if not CWPath.PID.value.exists(): + event.fail("No continuous-writes daemon is running (PID file not found).") + return + + try: + pid = int(CWPath.PID.value.read_text().strip()) + os.kill(pid, signal.SIGTERM) + except ProcessLookupError: + logger.warning("Daemon PID %s was not running; reading last state.", pid) + except ValueError: + event.fail("PID file contained invalid data.") + return + except OSError as exc: + event.fail(f"Failed to signal daemon: {exc}") + return + + # Wait for the daemon to exit and flush its final state, with retries + if not _wait_for_pid_exit(pid): + logger.warning("Daemon PID %d had to be force-killed; state file may be incomplete.", pid) + + if not CWPath.STATE.value.exists(): + event.fail("State file not found — the daemon may not have written anything.") + return + + try: + state = json.loads(CWPath.STATE.value.read_text()) + except (json.JSONDecodeError, OSError) as exc: + event.fail(f"Failed to read state file: {exc}") + return + + logger.info( + "Stopped continuous-writes daemon. last_written=%d, count=%d", + state["last_written"], + state["count"], + ) + event.set_results( + { + "ok": True, + "last-written-value": state["last_written"], + "count": state["count"], + } + ) + def _on_resource_created(self, event: ResourceCreatedEvent[ResourceProviderModel]) -> None: """Handle resource created event.""" logger.info("Resource created") diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py new file mode 100644 index 0000000..3f8e509 --- /dev/null +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -0,0 +1,241 @@ +#!/usr/bin/env python3 +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. + +"""Continuous writes daemon for Valkey integration testing. + +Spawned by the requirer charm's start-continuous-writes action. Reads +connection config from a JSON file, writes incrementing integers to a +Valkey list, and tracks the last successfully written value atomically. + +Usage: + python3 continuous_writes.py [sleep_interval] + +The config JSON must contain: + endpoints - comma-separated "host:port,host:port,..." string + username - Valkey username + password - Valkey password + tls_enabled - bool (optional, default false) + cert_path - path to client cert PEM (required if tls_enabled) + key_path - path to client key PEM (required if tls_enabled) + ca_path - path to CA cert PEM (required if tls_enabled) + initial_count - int to start counter from (optional, default 0) + +State is written atomically to STATE_PATH after each successful write: + {"last_written": N, "count": N} + +PID is written to PID_PATH on startup and removed on exit. +""" + +import asyncio +import json +import logging +import os +import signal +import sys +from dataclasses import dataclass +from pathlib import Path + +from glide import ( + AdvancedGlideClientConfiguration, + GlideClient, + GlideClientConfiguration, + NodeAddress, + ServerCredentials, + TlsAdvancedConfiguration, +) + +KEY = "cw_key" +CONFIG_PATH = Path("/tmp/cw_config.json") +STATE_PATH = Path("/tmp/cw_state.json") +PID_PATH = Path("/tmp/cw_daemon.pid") + +logging.basicConfig( + level=logging.INFO, + format="%(asctime)s %(levelname)s %(message)s", + stream=sys.stderr, +) +logger = logging.getLogger(__name__) + + +@dataclass +class TlsConfig: + """TLS certificate paths for the Glide client.""" + + cert_path: str + key_path: str + ca_path: str + + def to_dict(self) -> dict[str, str]: + """Serialise TLS config to a dict.""" + return { + "cert_path": self.cert_path, + "key_path": self.key_path, + "ca_path": self.ca_path, + } + + +@dataclass +class DaemonConfig: + """Connection configuration for the continuous-writes daemon.""" + + endpoints: str + username: str + password: str + tls: TlsConfig | None = None + initial_count: int = 0 + + @classmethod + def from_file(cls, path: Path) -> "DaemonConfig": + """Load and validate config from a JSON file.""" + data = json.loads(path.read_text()) + tls = ( + TlsConfig( + cert_path=data["cert_path"], key_path=data["key_path"], ca_path=data["ca_path"] + ) + if data.get("tls_enabled") + else None + ) + return cls( + endpoints=data["endpoints"], + username=data["username"], + password=data["password"], + tls=tls, + initial_count=data.get("initial_count", 0), + ) + + def to_file(self, path: Path) -> None: + """Serialise config to a JSON file.""" + data: dict[str, object] = { + "endpoints": self.endpoints, + "username": self.username, + "password": self.password, + "tls_enabled": self.tls is not None, + "initial_count": self.initial_count, + } + if self.tls is not None: + data.update(self.tls.to_dict()) + path.write_text(json.dumps(data)) + + +def _write_state_atomic(last_written: int, count: int) -> None: + """Write state file atomically using a temp-file + rename.""" + data = json.dumps({"last_written": last_written, "count": count}) + tmp = STATE_PATH.with_suffix(".tmp") + tmp.write_text(data) + tmp.rename(STATE_PATH) + + +async def _make_client(config: DaemonConfig) -> GlideClient: + addresses = [ + NodeAddress(host, int(port_str)) + for endpoint in config.endpoints.split(",") + for host, port_str in [endpoint.rsplit(":", 1)] + ] + + tls_cert = tls_key = tls_ca = None + if config.tls is not None: + tls_cert = Path(config.tls.cert_path).read_bytes() + tls_key = Path(config.tls.key_path).read_bytes() + tls_ca = Path(config.tls.ca_path).read_bytes() + + glide_config = GlideClientConfiguration( + addresses=addresses, + credentials=ServerCredentials( + username=config.username, + password=config.password, + ), + use_tls=config.tls is not None, + request_timeout=2000, + advanced_config=AdvancedGlideClientConfiguration( + tls_config=TlsAdvancedConfiguration( + client_cert_pem=tls_cert, + client_key_pem=tls_key, + root_pem_cacerts=tls_ca, + use_insecure_tls=True if config.tls is not None else None, + ) + ), + ) + return await GlideClient.create(glide_config) + + +async def run(config: DaemonConfig, sleep_interval: float) -> None: + """Run the main write loop until SIGTERM/SIGINT.""" + stop = asyncio.Event() + + def _handle_stop(*_): + stop.set() + + loop = asyncio.get_running_loop() + loop.add_signal_handler(signal.SIGTERM, _handle_stop) + loop.add_signal_handler(signal.SIGINT, _handle_stop) + + # Resume from previous state if present + counter = config.initial_count + if STATE_PATH.exists(): + try: + state = json.loads(STATE_PATH.read_text()) + counter = state.get("last_written", counter) + 1 + except (json.JSONDecodeError, KeyError): + pass + + last_written = counter - 1 + # LLEN at startup to pick up existing count in case of restart + count = 0 + try: + client = await _make_client(config) + try: + count = await client.llen(KEY) + finally: + await client.close() + except Exception: + pass + + logger.info( + "Starting continuous writes from counter=%d (existing list len=%d)", counter, count + ) + + while not stop.is_set(): + try: + client = await _make_client(config) + try: + new_len = await asyncio.wait_for(client.lpush(KEY, [str(counter)]), timeout=5) + finally: + await client.close() + + if not new_len: + raise RuntimeError("LPUSH returned 0/None") + + last_written = counter + count = new_len + _write_state_atomic(last_written, count) + logger.info("Wrote %d (list len=%d)", counter, count) + except Exception as exc: + # Write failed — log and skip without updating last_written. + # counter still increments so a gap is introduced in the sequence, + # making failed writes detectable during consistency checks. + logger.warning("Write failed for counter=%d: %s", counter, exc) + + counter += 1 + + try: + await asyncio.wait_for(stop.wait(), timeout=sleep_interval) + except asyncio.TimeoutError: + pass + + # Flush final state before exiting + _write_state_atomic(last_written, count) + logger.info("Daemon exiting — last_written=%d, count=%d", last_written, count) + + +if __name__ == "__main__": + config_path = Path(sys.argv[1]) if len(sys.argv) > 1 else CONFIG_PATH + sleep_interval = float(sys.argv[2]) if len(sys.argv) > 2 else 1.0 + + config = DaemonConfig.from_file(config_path) + + PID_PATH.write_text(str(os.getpid())) + try: + asyncio.run(run(config, sleep_interval)) + finally: + PID_PATH.unlink(missing_ok=True) From 0ffba891338fe4d0b7769563c53e8dba2f2d95bd Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 10 Apr 2026 14:26:28 +0000 Subject: [PATCH 219/282] redirect logs to file and read certs as base64 --- .../clients/requirer-charm/src/charm.py | 27 ++++++++++++++----- 1 file changed, 20 insertions(+), 7 deletions(-) diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index 59c9603..47882bb 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -5,6 +5,7 @@ """Charm the application.""" import asyncio +import base64 import enum import json import logging @@ -78,6 +79,7 @@ class CWPath(enum.Enum): CONFIG = Path("/tmp/cw_config.json") STATE = Path("/tmp/cw_state.json") PID = Path("/tmp/cw_daemon.pid") + LOG = Path("/tmp/cw_daemon.log") CERT = Path("/tmp/cw_client.pem") KEY = Path("/tmp/cw_client.key") CA = Path("/tmp/cw_client_ca.pem") @@ -238,7 +240,8 @@ def tls_enabled(self) -> bool: def tls_ca_cert(self) -> str | None: """Retrieve the TLS CA cert from config or relation.""" if self._use_config: - return str(self.config["ca-cert"]) or None + raw = str(self.config["ca-cert"]) + return base64.b64decode(raw).decode() if raw else None if self.data_interfaces_version == 0: if not self.valkey_relation: @@ -256,7 +259,8 @@ def tls_ca_cert(self) -> str | None: def certificate(self) -> str | None: """Retrieve the client certificate from config or the certificates relation.""" if self._use_config: - return str(self.config["cert"]) or None + raw = str(self.config["cert"]) + return base64.b64decode(raw).decode() if raw else None certificates, _ = self.certificates.get_assigned_certificates() if not certificates: @@ -268,7 +272,8 @@ def certificate(self) -> str | None: def private_key(self) -> str | None: """Retrieve the client private key from config or the certificates relation.""" if self._use_config: - return str(self.config["key"]) or None + raw = str(self.config["key"]) + return base64.b64decode(raw).decode() if raw else None _, private_key = self.certificates.get_assigned_certificates() if not private_key: @@ -419,13 +424,19 @@ def _on_start_continuous_writes_action(self, event: ops.ActionEvent) -> None: ).to_file(CWPath.CONFIG.value) daemon_script = Path(__file__).parent / "continuous_writes.py" + log_file = CWPath.LOG.value.open("w") proc = subprocess.Popen( [sys.executable, str(daemon_script), str(CWPath.CONFIG.value), str(sleep_interval)], - stdout=subprocess.DEVNULL, - stderr=subprocess.DEVNULL, + stdout=log_file, + stderr=log_file, start_new_session=True, ) - logger.info("Started continuous-writes daemon with PID %d", proc.pid) + log_file.close() + logger.info( + "Started continuous-writes daemon with PID %d (log: %s)", + proc.pid, + CWPath.LOG.value, + ) event.set_results({"ok": True, "pid": proc.pid}) def _on_stop_continuous_writes_action(self, event: ops.ActionEvent) -> None: @@ -448,7 +459,9 @@ def _on_stop_continuous_writes_action(self, event: ops.ActionEvent) -> None: # Wait for the daemon to exit and flush its final state, with retries if not _wait_for_pid_exit(pid): - logger.warning("Daemon PID %d had to be force-killed; state file may be incomplete.", pid) + logger.warning( + "Daemon PID %d had to be force-killed; state file may be incomplete.", pid + ) if not CWPath.STATE.value.exists(): event.fail("State file not found — the daemon may not have written anything.") From 7e6568b576fa87fb3d2339e546eb29089f8a736f Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 10 Apr 2026 14:26:44 +0000 Subject: [PATCH 220/282] update description of configs --- .../clients/requirer-charm/charmcraft.yaml | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index 54b8deb..2195ac9 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -158,19 +158,19 @@ config: default: false ca-cert: description: > - PEM-encoded CA certificate. Required when connection-source is "config" - and tls-enabled is true. + Base64-encoded PEM CA certificate. Required when connection-source is + "config" and tls-enabled is true. type: string default: "" cert: description: > - PEM-encoded client certificate. Required when connection-source is - "config" and tls-enabled is true. + Base64-encoded PEM client certificate. Required when connection-source + is "config" and tls-enabled is true. type: string default: "" key: description: > - PEM-encoded client private key. Required when connection-source is - "config" and tls-enabled is true. + Base64-encoded PEM client private key. Required when connection-source + is "config" and tls-enabled is true. type: string default: "" From 788f6a3a357721f9452c9ab5a63b73626b70df8b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 10 Apr 2026 14:46:58 +0000 Subject: [PATCH 221/282] add config changes and clearing cw --- .../clients/requirer-charm/charmcraft.yaml | 4 + .../clients/requirer-charm/src/charm.py | 66 ++++++++++-- .../requirer-charm/src/continuous_writes.py | 100 ++++++++++++++---- 3 files changed, 143 insertions(+), 27 deletions(-) diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index 2195ac9..1e4f241 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -116,6 +116,10 @@ actions: description: Seconds to sleep between writes (float, default 1.0) type: number default: 1.0 + clear-existing: + description: Delete any existing list values before starting (default true) + type: boolean + default: true stop-continuous-writes: description: > diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index 47882bb..5f19f8c 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -143,6 +143,7 @@ def __init__(self, framework: ops.Framework): self.on.stop_continuous_writes_action, self._on_stop_continuous_writes_action ) framework.observe(self.valkey_interface.on.endpoints_changed, self._on_endpoints_changed) + framework.observe(self.on.config_changed, self._on_config_changed) @property def valkey_relation(self) -> ops.Relation | None: @@ -385,16 +386,20 @@ def _on_start_continuous_writes_action(self, event: ops.ActionEvent) -> None: return sleep_interval = float(event.params.get("sleep-interval", 1.0)) + clear_existing = bool(event.params.get("clear-existing", True)) - # Stop any running daemon first + # Fail if a daemon is already running if CWPath.PID.value.exists(): try: pid = int(CWPath.PID.value.read_text().strip()) - os.kill(pid, signal.SIGTERM) - time.sleep(1) - except (ProcessLookupError, ValueError, OSError): - pass - CWPath.PID.value.unlink(missing_ok=True) + os.kill(pid, 0) # check existence without signalling + event.fail(f"Continuous-writes daemon is already running with PID {pid}.") + return + except ProcessLookupError: + # Stale PID file — clean up and proceed + CWPath.PID.value.unlink(missing_ok=True) + except ValueError: + CWPath.PID.value.unlink(missing_ok=True) # Clear previous state so the new run starts fresh CWPath.STATE.value.unlink(missing_ok=True) @@ -421,6 +426,7 @@ def _on_start_continuous_writes_action(self, event: ops.ActionEvent) -> None: password=password, tls=tls_config, initial_count=0, + clear_existing=clear_existing, ).to_file(CWPath.CONFIG.value) daemon_script = Path(__file__).parent / "continuous_writes.py" @@ -500,6 +506,54 @@ def _on_database_created(self, event: DatabaseCreatedEvent) -> None: """Handle the event triggered by data-interfaces v0.""" logger.info("Database created") + def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: + """Hot-reload the continuous-writes daemon when endpoints config changes.""" + if not self._use_config or not CWPath.PID.value.exists(): + return + + try: + current_config = DaemonConfig.from_file(CWPath.CONFIG.value) + except Exception: + return + + if current_config.endpoints == self.primary_endpoint: + return + + logger.info( + "Endpoints changed from %s to %s; reloading continuous-writes daemon.", + current_config.endpoints, + self.primary_endpoint, + ) + + username, password = next(iter(self.credentials.items())) + tls_config = current_config.tls + if self.tls_enabled and self.certificate and self.private_key and self.tls_ca_cert: + from continuous_writes import TlsConfig + + CWPath.CERT.value.write_bytes(self.certificate.encode()) + CWPath.KEY.value.write_bytes(self.private_key.encode()) + CWPath.CA.value.write_bytes(self.tls_ca_cert.encode()) + tls_config = TlsConfig( + cert_path=str(CWPath.CERT.value), + key_path=str(CWPath.KEY.value), + ca_path=str(CWPath.CA.value), + ) + + DaemonConfig( + endpoints=self.primary_endpoint, + username=username, + password=password, + tls=tls_config, + initial_count=0, + ).to_file(CWPath.CONFIG.value) + + try: + pid = int(CWPath.PID.value.read_text().strip()) + os.kill(pid, signal.SIGUSR1) + logger.info("Sent SIGUSR1 to continuous-writes daemon PID %d.", pid) + except (ProcessLookupError, ValueError, OSError) as exc: + logger.warning("Failed to send SIGUSR1 to daemon: %s", exc) + if __name__ == "__main__": # pragma: nocover ops.main(RequirerCharm) diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py index 3f8e509..0d75e7d 100644 --- a/tests/integration/clients/requirer-charm/src/continuous_writes.py +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -38,6 +38,7 @@ from glide import ( AdvancedGlideClientConfiguration, + BackoffStrategy, GlideClient, GlideClientConfiguration, NodeAddress, @@ -84,6 +85,7 @@ class DaemonConfig: password: str tls: TlsConfig | None = None initial_count: int = 0 + clear_existing: bool = False @classmethod def from_file(cls, path: Path) -> "DaemonConfig": @@ -102,6 +104,7 @@ def from_file(cls, path: Path) -> "DaemonConfig": password=data["password"], tls=tls, initial_count=data.get("initial_count", 0), + clear_existing=data.get("clear_existing", False), ) def to_file(self, path: Path) -> None: @@ -112,6 +115,7 @@ def to_file(self, path: Path) -> None: "password": self.password, "tls_enabled": self.tls is not None, "initial_count": self.initial_count, + "clear_existing": self.clear_existing, } if self.tls is not None: data.update(self.tls.to_dict()) @@ -146,7 +150,8 @@ async def _make_client(config: DaemonConfig) -> GlideClient: password=config.password, ), use_tls=config.tls is not None, - request_timeout=2000, + request_timeout=1000, + reconnect_strategy=BackoffStrategy(num_of_retries=1, factor=0, exponent_base=1), advanced_config=AdvancedGlideClientConfiguration( tls_config=TlsAdvancedConfiguration( client_cert_pem=tls_cert, @@ -159,18 +164,25 @@ async def _make_client(config: DaemonConfig) -> GlideClient: return await GlideClient.create(glide_config) -async def run(config: DaemonConfig, sleep_interval: float) -> None: - """Run the main write loop until SIGTERM/SIGINT.""" - stop = asyncio.Event() +async def clear(config: DaemonConfig) -> None: + """Delete the continuous-writes list key from Valkey.""" + client = await _make_client(config) + try: + await client.delete([KEY]) + logger.info("Cleared existing values for key '%s'.", KEY) + finally: + await client.close() - def _handle_stop(*_): - stop.set() - loop = asyncio.get_running_loop() - loop.add_signal_handler(signal.SIGTERM, _handle_stop) - loop.add_signal_handler(signal.SIGINT, _handle_stop) +async def _initial_count(config: DaemonConfig) -> tuple[int, int]: + """Return (counter, list_len) to start from, resuming from state file if present.""" + if config.clear_existing: + try: + await clear(config) + except Exception as exc: + logger.warning("Failed to clear existing values: %s", exc) + return config.initial_count, 0 - # Resume from previous state if present counter = config.initial_count if STATE_PATH.exists(): try: @@ -179,8 +191,6 @@ def _handle_stop(*_): except (json.JSONDecodeError, KeyError): pass - last_written = counter - 1 - # LLEN at startup to pick up existing count in case of restart count = 0 try: client = await _make_client(config) @@ -191,21 +201,65 @@ def _handle_stop(*_): except Exception: pass + return counter, count + + +async def _write_one(config: DaemonConfig, counter: int) -> int: + """Write counter to Valkey. Returns new list length, or None on failure.""" + client = await _make_client(config) + try: + new_len = await asyncio.wait_for(client.lpush(KEY, [str(counter)]), timeout=5) + finally: + await client.close() + + if not new_len: + raise RuntimeError("LPUSH returned 0/None") + return new_len + + +def _try_reload(old: DaemonConfig) -> DaemonConfig: + """Re-read config from disk; log changes and return updated config or original on failure.""" + try: + new = DaemonConfig.from_file(CONFIG_PATH) + except Exception as exc: + logger.warning("Failed to reload config: %s", exc) + return old + + changes = [] + if old.endpoints != new.endpoints: + changes.append(f"endpoints: {old.endpoints!r} -> {new.endpoints!r}") + if old.username != new.username: + changes.append(f"username: {old.username!r} -> {new.username!r}") + if (old.tls is not None) != (new.tls is not None): + changes.append(f"tls_enabled: {old.tls is not None} -> {new.tls is not None}") + + if changes: + logger.info("Config reloaded — changes: %s", "; ".join(changes)) + else: + logger.info("Config reloaded — no changes detected.") + + return new + + +async def run(config: DaemonConfig, sleep_interval: float) -> None: + """Run the main write loop until SIGTERM/SIGINT.""" + stop = asyncio.Event() + reload = asyncio.Event() + + loop = asyncio.get_running_loop() + loop.add_signal_handler(signal.SIGTERM, stop.set) + loop.add_signal_handler(signal.SIGINT, stop.set) + loop.add_signal_handler(signal.SIGUSR1, reload.set) + + counter, count = await _initial_count(config) + last_written = counter - 1 logger.info( "Starting continuous writes from counter=%d (existing list len=%d)", counter, count ) while not stop.is_set(): try: - client = await _make_client(config) - try: - new_len = await asyncio.wait_for(client.lpush(KEY, [str(counter)]), timeout=5) - finally: - await client.close() - - if not new_len: - raise RuntimeError("LPUSH returned 0/None") - + new_len = await _write_one(config, counter) last_written = counter count = new_len _write_state_atomic(last_written, count) @@ -223,6 +277,10 @@ def _handle_stop(*_): except asyncio.TimeoutError: pass + if reload.is_set(): + reload.clear() + config = _try_reload(config) + # Flush final state before exiting _write_state_atomic(last_written, count) logger.info("Daemon exiting — last_written=%d, count=%d", last_written, count) From d8decd1dd0442b1150cbed852fc9e9f073c33871 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 10 Apr 2026 14:51:52 +0000 Subject: [PATCH 222/282] reafactor code --- .../requirer-charm/src/continuous_writes.py | 51 +++++++------------ 1 file changed, 19 insertions(+), 32 deletions(-) diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py index 0d75e7d..74c4f78 100644 --- a/tests/integration/clients/requirer-charm/src/continuous_writes.py +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -33,7 +33,8 @@ import os import signal import sys -from dataclasses import dataclass +from contextlib import asynccontextmanager +from dataclasses import asdict, dataclass from pathlib import Path from glide import ( @@ -67,14 +68,6 @@ class TlsConfig: key_path: str ca_path: str - def to_dict(self) -> dict[str, str]: - """Serialise TLS config to a dict.""" - return { - "cert_path": self.cert_path, - "key_path": self.key_path, - "ca_path": self.ca_path, - } - @dataclass class DaemonConfig: @@ -118,7 +111,7 @@ def to_file(self, path: Path) -> None: "clear_existing": self.clear_existing, } if self.tls is not None: - data.update(self.tls.to_dict()) + data.update(asdict(self.tls)) path.write_text(json.dumps(data)) @@ -164,16 +157,23 @@ async def _make_client(config: DaemonConfig) -> GlideClient: return await GlideClient.create(glide_config) -async def clear(config: DaemonConfig) -> None: - """Delete the continuous-writes list key from Valkey.""" +@asynccontextmanager +async def _client(config: DaemonConfig): + """Async context manager that creates and closes a GlideClient.""" client = await _make_client(config) try: - await client.delete([KEY]) - logger.info("Cleared existing values for key '%s'.", KEY) + yield client finally: await client.close() +async def clear(config: DaemonConfig) -> None: + """Delete the continuous-writes list key from Valkey.""" + async with _client(config) as client: + await client.delete([KEY]) + logger.info("Cleared existing values for key '%s'.", KEY) + + async def _initial_count(config: DaemonConfig) -> tuple[int, int]: """Return (counter, list_len) to start from, resuming from state file if present.""" if config.clear_existing: @@ -193,30 +193,14 @@ async def _initial_count(config: DaemonConfig) -> tuple[int, int]: count = 0 try: - client = await _make_client(config) - try: + async with _client(config) as client: count = await client.llen(KEY) - finally: - await client.close() except Exception: pass return counter, count -async def _write_one(config: DaemonConfig, counter: int) -> int: - """Write counter to Valkey. Returns new list length, or None on failure.""" - client = await _make_client(config) - try: - new_len = await asyncio.wait_for(client.lpush(KEY, [str(counter)]), timeout=5) - finally: - await client.close() - - if not new_len: - raise RuntimeError("LPUSH returned 0/None") - return new_len - - def _try_reload(old: DaemonConfig) -> DaemonConfig: """Re-read config from disk; log changes and return updated config or original on failure.""" try: @@ -259,7 +243,10 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: while not stop.is_set(): try: - new_len = await _write_one(config, counter) + async with _client(config) as client: + new_len = await client.lpush(KEY, [str(counter)]) + if not new_len: + raise RuntimeError("LPUSH returned 0/None") last_written = counter count = new_len _write_state_atomic(last_written, count) From 2b59f179cd647546b07cea3c9722de6d91e654aa Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 10 Apr 2026 19:19:35 +0000 Subject: [PATCH 223/282] add default username --- .../clients/requirer-charm/charmcraft.yaml | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index 1e4f241..b92731c 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -1,7 +1,6 @@ # Copyright 2026 Canonical Ltd. # See LICENSE file for licensing details. - type: charm platforms: @@ -45,11 +44,11 @@ parts: source: . after: - poetry-deps - poetry-export-extra-args: ['--without-hashes'] + poetry-export-extra-args: ["--without-hashes"] build-packages: - - libffi-dev # Needed to build Python dependencies with Rust from source - - libssl-dev # Needed to build Python dependencies with Rust from source - - pkg-config # Needed to build Python dependencies with Rust from source + - libffi-dev # Needed to build Python dependencies with Rust from source + - libssl-dev # Needed to build Python dependencies with Rust from source + - pkg-config # Needed to build Python dependencies with Rust from source - libprotobuf-dev # Needed to build Valkey-glide - protobuf-compiler # Needed to build Valkey-glide - git @@ -149,7 +148,7 @@ config: description: > Valkey username. Required when connection-source is "config". type: string - default: "" + default: "charmed-operator" password: description: > Valkey password. Required when connection-source is "config". From 166ecd0f8455279a89b422e93bc9c8f1992f550a Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 10 Apr 2026 21:57:25 +0000 Subject: [PATCH 224/282] add sentinel check and some refactoring --- tests/integration/cw_helpers.py | 2 -- tests/integration/ha/helpers/helpers.py | 37 +++++++++++++------------ tests/integration/ha/test_failover.py | 34 +++++++++++++---------- 3 files changed, 40 insertions(+), 33 deletions(-) diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index 5361e70..0ceae88 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -71,8 +71,6 @@ def assert_continuous_writes_consistent( hostnames: list[str], username: str, password: str, - ignore_count: bool = False, - tls_enabled: bool = False, ) -> None: """Assert that the continuous writes are consistent.""" last_written_value = int(Path(WRITES_LAST_WRITTEN_VAL_PATH).read_text()) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index 730011b..23986b3 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -31,6 +31,21 @@ RESTART_DELAY_PATCHED = 120 +EXTEND_PEBBLE_RESTART_DELAY_YAML = """services: + valkey: + override: merge + backoff-delay: {delay}s + backoff-limit: {delay}s +""" + +RESTORE_PEBBLE_RESTART_DELAY_YAML = """services: + valkey: + override: merge + backoff-delay: 500ms + backoff-limit: 30s +""" + + def lxd_cut_network_from_unit_with_ip_change(machine_name: str) -> None: """Cut network from a lxc container in a way the changes the IP.""" # apply a mask (device type `none`) @@ -465,7 +480,9 @@ def send_process_control_signal( command, stderr=subprocess.PIPE, shell=True, universal_newlines=True, timeout=3 ) except (subprocess.CalledProcessError, subprocess.TimeoutExpired): - pass + logger.error( + "failed to send signal %s to process %s on unit %s", signal, db_process, unit_name + ) logger.info(f"Signal {signal} sent to database process on unit {unit_name}.") @@ -481,21 +498,6 @@ def lxd_patch_restart_delay(juju: jubilant.Juju, unit_name: str, delay: int | No juju.exec(command="sudo systemctl daemon-reload", unit=unit_name) -EXTEND_PEBBLE_RESTART_DELAY_YAML = """services: - valkey: - override: merge - backoff-delay: {delay}s - backoff-limit: {delay}s -""" - -RESTORE_PEBBLE_RESTART_DELAY_YAML = """services: - valkey: - override: merge - backoff-delay: 500ms - backoff-limit: 30s -""" - - def pebble_patch_restart_delay( juju: jubilant.Juju, unit_name: str, @@ -653,7 +655,8 @@ def reboot_unit(juju: jubilant.Juju, unit_name: str, substrate: Substrate) -> No delete_pod(unit_name.replace("/", "-"), juju.model) -def delete_pod(pod_name: str, namespace="testing"): +def delete_pod(pod_name: str, namespace="testing") -> None: + """Delete a pod from the cluster.""" # Load the kubeconfig file from your local machine (~/.kube/config) # Note: If running this script INSIDE a pod, use config.load_incluster_config() instead. config.load_kube_config() diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index 081c4b3..645f43c 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -3,6 +3,7 @@ # See LICENSE file for licensing details. import asyncio +import json import logging import jubilant @@ -114,7 +115,6 @@ async def test_kill_db_process_on_primary( primary_ip = get_primary_ip(juju, app_name, tls_enabled=tls_enabled) assert primary_ip, "Failed to get primary endpoint from valkey." - # Cut the network to the primary unit logger.info("Axing away primary unit at %s", primary_ip) primary_unit_name = get_unit_name_from_primary_ip(juju, primary_ip, substrate) @@ -174,8 +174,6 @@ async def test_kill_db_process_on_primary( hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password, - ignore_count=True, # we ignore count here as we know we will miss writes during primary down - tls_enabled=tls_enabled, ) @@ -208,7 +206,6 @@ async def test_freeze_db_process_on_primary( primary_ip = get_primary_ip(juju, app_name, tls_enabled=tls_enabled) assert primary_ip, "Failed to get primary endpoint from valkey." - # Cut the network to the primary unit logger.info("Axing away primary unit at %s", primary_ip) primary_unit_name = get_unit_name_from_primary_ip(juju, primary_ip, substrate) @@ -237,6 +234,10 @@ async def test_freeze_db_process_on_primary( assert new_primary_ip != primary_ip, "Primary IP did not change after failover delay." logger.info("Failover successful, new primary is at %s", new_primary_ip) + new_primary_unit_name = get_unit_name_from_primary_ip(juju, new_primary_ip, substrate) + new_primary_hostname = f"{new_primary_unit_name.replace('/', '-')}.{app_name}-endpoints" + new_primary_endpoint = new_primary_ip if substrate == Substrate.VM else new_primary_hostname + number_of_replicas = await get_number_connected_replicas( hostnames, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled ) @@ -290,6 +291,21 @@ async def test_freeze_db_process_on_primary( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" ) + for hostname in hostnames: + # Make sure all sentinels are connected to new primary + master_addr = exec_valkey_cli( + hostname=hostname, + username=CharmUsers.SENTINEL_CHARM_ADMIN, + password=get_password(juju, CharmUsers.SENTINEL_CHARM_ADMIN), + command="sentinel get-master-addr-by-name primary", + tls_enabled=tls_enabled, + sentinel=True, + json=True, + ).stdout + assert json.loads(master_addr)[0] == new_primary_endpoint, ( + f"Sentinel at {hostname} is not connected to the new primary." + ) + # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") await assert_continuous_writes_increasing( @@ -305,8 +321,6 @@ async def test_freeze_db_process_on_primary( hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password, - ignore_count=True, # we ignore count here as we know we will miss writes during primary down - tls_enabled=tls_enabled, ) @@ -400,8 +414,6 @@ async def test_full_cluster_restart( hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password, - ignore_count=True, # we ignore count here as we know we will miss writes during primary down - tls_enabled=tls_enabled, ) # reset the restart delay to the original value @@ -504,8 +516,6 @@ async def test_full_cluster_crash( hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password, - ignore_count=True, # we ignore count here as we know we will miss writes during primary down - tls_enabled=tls_enabled, ) # reset the restart delay to the original value @@ -602,8 +612,6 @@ async def test_reboot_primary( hostnames=get_cluster_hostnames(juju, app_name), username=CharmUsers.VALKEY_ADMIN, password=admin_password, - tls_enabled=tls_enabled, - ignore_count=True, # we ignore count here as we know we will miss writes during primary down ) @@ -690,6 +698,4 @@ async def test_full_cluster_reboot( hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN, password=admin_password, - tls_enabled=tls_enabled, - ignore_count=True, # we ignore count here as we know we will miss writes during primary down ) From 3852c75cbf1c76297c95ef27c2d0d79bac334e48 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Sat, 11 Apr 2026 10:19:19 +0000 Subject: [PATCH 225/282] add option to clear cw on stop --- .../clients/requirer-charm/charmcraft.yaml | 5 +++++ .../clients/requirer-charm/src/charm.py | 14 +++++++++----- 2 files changed, 14 insertions(+), 5 deletions(-) diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index b92731c..6f1ee2c 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -125,6 +125,11 @@ actions: Stop the continuous-writes daemon and return the last written value and total count of successful writes. Use this after a disruptive operation to retrieve stats for consistency verification. + params: + clear: + description: Delete continuous-writes data from Valkey after stopping (default false) + type: boolean + default: false config: options: diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index 5f19f8c..aec0f78 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -24,7 +24,7 @@ ) from charms.data_platform_libs.v0.data_interfaces import DatabaseCreatedEvent, DatabaseRequires from client import ValkeyClient -from continuous_writes import DaemonConfig +from continuous_writes import DaemonConfig, TlsConfig, clear as cw_clear from dpcharmlibs.interfaces import ( DataContractV1, RequirerCommonModel, @@ -412,8 +412,6 @@ def _on_start_continuous_writes_action(self, event: ops.ActionEvent) -> None: CWPath.CERT.value.write_bytes(self.certificate.encode()) CWPath.KEY.value.write_bytes(self.private_key.encode()) CWPath.CA.value.write_bytes(self.tls_ca_cert.encode()) - from continuous_writes import TlsConfig - tls_config = TlsConfig( cert_path=str(CWPath.CERT.value), key_path=str(CWPath.KEY.value), @@ -484,6 +482,14 @@ def _on_stop_continuous_writes_action(self, event: ops.ActionEvent) -> None: state["last_written"], state["count"], ) + + if bool(event.params.get("clear", False)): + try: + daemon_config = DaemonConfig.from_file(CWPath.CONFIG.value) + asyncio.run(cw_clear(daemon_config)) + except Exception as exc: + logger.warning("Failed to clear continuous-writes data: %s", exc) + event.set_results( { "ok": True, @@ -528,8 +534,6 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: username, password = next(iter(self.credentials.items())) tls_config = current_config.tls if self.tls_enabled and self.certificate and self.private_key and self.tls_ca_cert: - from continuous_writes import TlsConfig - CWPath.CERT.value.write_bytes(self.certificate.encode()) CWPath.KEY.value.write_bytes(self.private_key.encode()) CWPath.CA.value.write_bytes(self.tls_ca_cert.encode()) From e81365d7c55b44d159d91788d1074e8a6048d771 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Sat, 11 Apr 2026 10:21:28 +0000 Subject: [PATCH 226/282] add clear cw action --- .../clients/requirer-charm/charmcraft.yaml | 5 +++++ .../clients/requirer-charm/src/charm.py | 18 ++++++++++++++++++ 2 files changed, 23 insertions(+) diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index 6f1ee2c..3c1f46f 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -120,6 +120,11 @@ actions: type: boolean default: true + clear-continuous-writes: + description: > + Delete the continuous-writes key from Valkey. Can be run while the daemon + is stopped to reset data between test runs. + stop-continuous-writes: description: > Stop the continuous-writes daemon and return the last written value and diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index aec0f78..8dd0853 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -142,6 +142,9 @@ def __init__(self, framework: ops.Framework): framework.observe( self.on.stop_continuous_writes_action, self._on_stop_continuous_writes_action ) + framework.observe( + self.on.clear_continuous_writes_action, self._on_clear_continuous_writes_action + ) framework.observe(self.valkey_interface.on.endpoints_changed, self._on_endpoints_changed) framework.observe(self.on.config_changed, self._on_config_changed) @@ -498,6 +501,21 @@ def _on_stop_continuous_writes_action(self, event: ops.ActionEvent) -> None: } ) + def _on_clear_continuous_writes_action(self, event: ops.ActionEvent) -> None: + """Handle clear-continuous-writes action.""" + if not CWPath.CONFIG.value.exists(): + event.fail("No continuous-writes config found — run start-continuous-writes first.") + return + + try: + daemon_config = DaemonConfig.from_file(CWPath.CONFIG.value) + asyncio.run(cw_clear(daemon_config)) + except Exception as exc: + event.fail(f"Failed to clear continuous-writes data: {exc}") + return + + event.set_results({"ok": True}) + def _on_resource_created(self, event: ResourceCreatedEvent[ResourceProviderModel]) -> None: """Handle resource created event.""" logger.info("Resource created") From fc54748e6c99bb7cde69bc20170253cab1f442a5 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Sat, 11 Apr 2026 10:26:55 +0000 Subject: [PATCH 227/282] rename ca-cert to cacert to match valkeycli --- tests/integration/clients/requirer-charm/charmcraft.yaml | 2 +- tests/integration/clients/requirer-charm/src/charm.py | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index 3c1f46f..7da2741 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -169,7 +169,7 @@ config: Whether TLS is enabled. Used when connection-source is "config". type: boolean default: false - ca-cert: + cacert: description: > Base64-encoded PEM CA certificate. Required when connection-source is "config" and tls-enabled is true. diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index 8dd0853..9c04af1 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -244,7 +244,7 @@ def tls_enabled(self) -> bool: def tls_ca_cert(self) -> str | None: """Retrieve the TLS CA cert from config or relation.""" if self._use_config: - raw = str(self.config["ca-cert"]) + raw = str(self.config["cacert"]) return base64.b64decode(raw).decode() if raw else None if self.data_interfaces_version == 0: From 6d6bcd54325186597d91543c11cb127ebe860d45 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Sat, 11 Apr 2026 10:31:34 +0000 Subject: [PATCH 228/282] change default for connection-source to config --- tests/integration/clients/requirer-charm/charmcraft.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index 7da2741..7e38e4d 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -147,7 +147,7 @@ config: Whether to read connection info from the Valkey relation ("relation") or from the config options below ("config"). type: string - default: relation + default: config endpoints: description: > Comma-separated list of Valkey endpoints in "host:port" form. From 82142f59ad211008154bc72d29ca799f681d6f06 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Sat, 11 Apr 2026 10:37:00 +0000 Subject: [PATCH 229/282] add helpers for cw charm --- tests/integration/cw_helpers.py | 213 +++++++++++++++++++++++++++++++- 1 file changed, 208 insertions(+), 5 deletions(-) diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index 0ceae88..dbdaaab 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -3,13 +3,28 @@ # See LICENSE file for licensing details. import asyncio +import base64 import json import logging import subprocess from pathlib import Path +from types import SimpleNamespace + +import jubilant from tests.integration.continuous_writes import ContinuousWrites -from tests.integration.helpers import create_valkey_client, exec_valkey_cli +from tests.integration.helpers import ( + APP_NAME, + TLS_CA_FILE, + TLS_CERT_FILE, + TLS_KEY_FILE, + CharmUsers, + create_valkey_client, + download_client_certificate_from_unit, + exec_valkey_cli, + get_cluster_hostnames, + get_password, +) logger = logging.getLogger(__name__) @@ -27,7 +42,15 @@ def start_continuous_writes( sentinel_user: str, sentinel_password: str, ) -> None: - """Create a subprocess instance of `continuous writes` and start writing data to valkey.""" + """Create a subprocess instance of continuous writes and start writing data to Valkey. + + Args: + endpoints: Comma-separated list of Valkey endpoints. + valkey_user: Valkey username. + valkey_password: Valkey password. + sentinel_user: Sentinel username. + sentinel_password: Sentinel password. + """ subprocess.Popen( [ "python3", @@ -42,7 +65,7 @@ def start_continuous_writes( def stop_continuous_writes() -> None: - """Shut down the subprocess instance of the `continuous writes`.""" + """Shut down the subprocess instance of the continuous writes.""" proc = subprocess.Popen(["pkill", "-15", "-f", "continuous_writes.py"]) proc.communicate() @@ -53,7 +76,14 @@ async def assert_continuous_writes_increasing( password: str, tls_enabled: bool = False, ) -> None: - """Assert that the continuous writes are increasing.""" + """Assert that the continuous writes are increasing. + + Args: + hostnames: List of Valkey hostnames to connect to. + username: Valkey username. + password: Valkey password. + tls_enabled: Whether TLS is enabled. + """ async with create_valkey_client( hostnames, username=username, @@ -67,12 +97,185 @@ async def assert_continuous_writes_increasing( logger.info("Continuous writes are increasing.") +def configure_requirer_charm( + juju: jubilant.Juju, + app: str, + valkey_app: str = APP_NAME, + tls_enabled: bool = False, +) -> None: + """Configure the requirer charm to connect to Valkey via config options. + + Endpoints and the admin password are fetched automatically from the Juju + model. When ``tls_enabled`` is True, client certificates are downloaded + from a Valkey unit and passed as base64-encoded strings. + + Args: + juju: Juju client instance. + app: Name of the requirer charm application to configure. + valkey_app: Name of the Valkey application to fetch endpoints from. + tls_enabled: Whether TLS is enabled. + """ + hostnames = get_cluster_hostnames(juju, valkey_app) + endpoints = ",".join(f"{h}:6379" for h in hostnames) + password = get_password(juju, user=CharmUsers.VALKEY_ADMIN) + + cacert = cert = key = "" + if tls_enabled: + download_client_certificate_from_unit(juju, app_name=valkey_app) + cacert = base64.b64encode(Path(TLS_CA_FILE).read_bytes()).decode() + cert = base64.b64encode(Path(TLS_CERT_FILE).read_bytes()).decode() + key = base64.b64encode(Path(TLS_KEY_FILE).read_bytes()).decode() + + values: dict = { + "connection-source": "config", + "endpoints": endpoints, + "username": CharmUsers.VALKEY_ADMIN.value, + "password": password, + "tls-enabled": tls_enabled, + "cacert": cacert, + "cert": cert, + "key": key, + } + juju.config(app=app, values=values) + + +def start_charm_continuous_writes( + juju: jubilant.Juju, + unit: str, + sleep_interval: float = 1.0, + config: dict | None = None, + clear: bool = True, +) -> int: + """Trigger the start-continuous-writes action on the requirer charm unit. + + Connection info is taken from the Valkey relation by default. To use + config options instead, pass a ``config`` dict; the options are applied + to the application before the action runs. + + Args: + juju: Juju client instance. + unit: Unit name (e.g. ``"requirer-charm/0"``). + sleep_interval: Seconds to sleep between writes. + config: Optional charm config values to set before starting. + clear: Delete any existing list values before starting. + + Returns: + PID of the spawned continuous-writes daemon. + """ + if config: + app = unit.split("/")[0] + juju.config(app=app, values=config) + + result = juju.run( + unit, + "start-continuous-writes", + {"sleep-interval": sleep_interval, "clear-existing": clear}, + ) + assert result.results.get("ok"), f"start-continuous-writes failed: {result}" + pid = int(result.results["pid"]) + logger.info("Continuous-writes daemon started on %s with PID %d", unit, pid) + return pid + + +def stop_charm_continuous_writes(juju: jubilant.Juju, unit: str) -> SimpleNamespace: + """Trigger the stop-continuous-writes action and return write statistics. + + Args: + juju: Juju client instance. + unit: Unit name to run the action on. + + Returns: + Namespace with ``last_written_value`` (last integer successfully + written to Valkey) and ``count`` (number of items in the list). + """ + result = juju.run(unit, "stop-continuous-writes") + assert result.results.get("ok"), f"stop-continuous-writes failed: {result}" + stats = SimpleNamespace( + last_written_value=int(result.results["last-written-value"]), + count=int(result.results["count"]), + ) + logger.info( + "Continuous-writes stopped on %s — last_written=%d, count=%d", + unit, + stats.last_written_value, + stats.count, + ) + return stats + + +def clear_charm_continuous_writes(juju: jubilant.Juju, unit: str) -> None: + """Trigger the clear-continuous-writes action on the requirer charm unit. + + Deletes the continuous-writes key from Valkey. Can be called while the + daemon is stopped to reset data between test runs. + + Args: + juju: Juju client instance. + unit: Unit name to run the action on. + """ + result = juju.run(unit, "clear-continuous-writes") + assert result.results.get("ok"), f"clear-continuous-writes failed: {result}" + logger.info("Continuous-writes data cleared on %s", unit) + + +def assert_charm_continuous_writes_consistent( + hostnames: list[str], + username: str, + password: str, + stats: SimpleNamespace, +) -> None: + """Assert consistency of continuous-writes data across all Valkey instances. + + Checks two properties: + - The head of the list on every replica matches ``stats.last_written_value``. + - Every replica holds an identical copy of the list. + + Args: + hostnames: List of Valkey hostnames to check. + username: Valkey username. + password: Valkey password. + stats: Write statistics returned by ``stop_charm_continuous_writes``. + """ + reference: list[int] | None = None + + for endpoint in hostnames: + current_values: list[int] = json.loads( + exec_valkey_cli(endpoint, username, password, f"LRANGE {KEY} 0 -1", json=True).stdout + ) + + last_value = int(current_values[0]) if current_values else None + assert last_value == stats.last_written_value, ( + f"endpoint {endpoint}: head of list is {last_value}, " + f"expected last_written_value={stats.last_written_value}" + ) + + if reference is None: + reference = current_values + assert current_values == reference, ( + f"endpoint {endpoint}: list diverges from reference.\n" + f" reference (first endpoint): {reference[:10]}...\n" + f" this endpoint: {current_values[:10]}..." + ) + + logger.info( + "Consistency check passed across %d endpoints (list len=%d).", + len(hostnames), + len(reference or []), + ) + + def assert_continuous_writes_consistent( hostnames: list[str], username: str, password: str, ) -> None: - """Assert that the continuous writes are consistent.""" + """Assert that the continuous writes are consistent. + + Args: + hostnames: List of Valkey hostnames to check. + username: Valkey username. + password: Valkey password. + """ last_written_value = int(Path(WRITES_LAST_WRITTEN_VAL_PATH).read_text()) if not last_written_value: From 31707ed269b73e1b81a70a33dd038b7d57eec9d3 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Sat, 11 Apr 2026 10:50:49 +0000 Subject: [PATCH 230/282] small refactoring --- tests/integration/cw_helpers.py | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index dbdaaab..2b704f9 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -222,19 +222,19 @@ def assert_charm_continuous_writes_consistent( hostnames: list[str], username: str, password: str, - stats: SimpleNamespace, + last_written_value: int, ) -> None: """Assert consistency of continuous-writes data across all Valkey instances. Checks two properties: - - The head of the list on every replica matches ``stats.last_written_value``. + - The head of the list on every replica matches ``last_written_value``. - Every replica holds an identical copy of the list. Args: hostnames: List of Valkey hostnames to check. username: Valkey username. password: Valkey password. - stats: Write statistics returned by ``stop_charm_continuous_writes``. + last_written_value: Last integer successfully written, from ``stop_charm_continuous_writes``. """ reference: list[int] | None = None @@ -244,9 +244,9 @@ def assert_charm_continuous_writes_consistent( ) last_value = int(current_values[0]) if current_values else None - assert last_value == stats.last_written_value, ( + assert last_value == last_written_value, ( f"endpoint {endpoint}: head of list is {last_value}, " - f"expected last_written_value={stats.last_written_value}" + f"expected last_written_value={last_written_value}" ) if reference is None: From 69b053a98835ac8c47114678deb0f2c47fa3c676 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 13 Apr 2026 08:01:06 +0000 Subject: [PATCH 231/282] rename get_cluster_hostnames to get_cluster_addresses --- tests/integration/ha/test_network_cut.py | 42 +++++++-------- tests/integration/ha/test_scaling.py | 36 ++++++------- tests/integration/helpers.py | 28 +++++----- tests/integration/test_charm.py | 54 +++++++++---------- .../tls/test_certificate_options.py | 6 +-- .../tls/test_certificate_rotation.py | 34 ++++++------ tests/integration/tls/test_private_key.py | 14 ++--- tests/integration/tls/test_tls.py | 24 ++++----- 8 files changed, 118 insertions(+), 120 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index be2c2d1..c29aa32 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -30,7 +30,7 @@ CharmUsers, are_apps_active_and_agents_idle, download_client_certificate_from_unit, - get_cluster_hostnames, + get_cluster_addresses, get_ip_from_unit, get_number_connected_replicas, get_password, @@ -84,7 +84,7 @@ async def test_network_cut_primary( # noqa: C901 pytest.skip("Changing IP is not applicable for k8s substrate.") download_client_certificate_from_unit(juju, APP_NAME) - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) c_writes.tls_enabled = tls_enabled await c_writes.async_clear() @@ -147,7 +147,7 @@ async def test_network_cut_primary( # noqa: C901 juju, APP_NAME, tls_enabled=tls_enabled, - hostnames=[ip for ip in hostnames if ip != primary_ip], + addresses=[address for address in addresses if address != primary_ip], ) break except ValueError as e: @@ -170,7 +170,7 @@ async def test_network_cut_primary( # noqa: C901 for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10), reraise=True): with attempt: number_of_replicas = await get_number_connected_replicas( - hostnames=hostnames, + addresses=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=tls_enabled, @@ -182,21 +182,21 @@ async def test_network_cut_primary( # noqa: C901 logger.info( "Verifying that new primary endpoint is marked as down in sentinels list of other replicas..." ) - for hostname in hostnames: - if hostname == primary_ip: + for address in addresses: + if address == primary_ip: continue assert is_endpoint_in_sentinels( juju, endpoint=primary_endpoint, - hostname=hostname, + hostname=address, status="s_down", tls_enabled=tls_enabled, ), ( - f"The old primary endpoint should be marked as down in sentinels list of hostname {hostname} after network cut." + f"The old primary endpoint should be marked as down in sentinels list of hostname {address} after network cut." ) await assert_continuous_writes_increasing( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=tls_enabled, @@ -252,13 +252,13 @@ async def test_network_cut_primary( # noqa: C901 "The new IP should be in SANs of client certificate after network cut and IP change." ) - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) # check replica number that it is back to NUM_UNITS - 1 # sometimes it takes some time for the old primary to be marked as replica and for sentinels to update their status, so we add a retry here for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10), reraise=True): with attempt: number_of_replicas = await get_number_connected_replicas( - hostnames=hostnames, + addresses=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=tls_enabled, @@ -269,29 +269,27 @@ async def test_network_cut_primary( # noqa: C901 logger.info("Verifying endpoint presence in sentinels") - for hostname in hostnames: - if hostname == new_unit_ip: + for address in addresses: + if address == new_unit_ip: continue if ip_change: assert not is_endpoint_in_sentinels( - juju, primary_endpoint, hostname, tls_enabled=tls_enabled + juju, primary_endpoint, address, tls_enabled=tls_enabled ), ( - f"The old primary endpoint should not be present in sentinels list of hostname {hostname} after network cut and IP change." + f"The old primary endpoint should not be present in sentinels list of hostname {address} after network cut and IP change." ) - assert is_endpoint_in_sentinels( - juju, new_unit_ip, hostname, tls_enabled=tls_enabled - ), ( - f"The new primary IP should be present in sentinels list of hostname {hostname} after network cut and IP change." + assert is_endpoint_in_sentinels(juju, new_unit_ip, address, tls_enabled=tls_enabled), ( + f"The new primary IP should be present in sentinels list of hostname {address} after network cut and IP change." ) else: assert is_endpoint_in_sentinels( - juju, primary_endpoint, hostname, tls_enabled=tls_enabled + juju, primary_endpoint, address, tls_enabled=tls_enabled ), ( - f"The old primary endpoint should be present in sentinels list of hostname {hostname} after network cut and no IP change." + f"The old primary endpoint should be present in sentinels list of hostname {address} after network cut and no IP change." ) await assert_continuous_writes_increasing( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=tls_enabled, diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index a0f792b..64d144d 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -17,7 +17,7 @@ IMAGE_RESOURCE, are_apps_active_and_agents_idle, existing_app, - get_cluster_hostnames, + get_cluster_addresses, get_number_connected_replicas, get_password, get_primary_ip, @@ -94,10 +94,10 @@ async def test_scale_up(juju: jubilant.Juju, c_writes) -> None: ) # check if all units have been added to the cluster - hostnames = get_cluster_hostnames(juju, app_name) + addresses = get_cluster_addresses(juju, app_name) connected_replicas = await get_number_connected_replicas( - hostnames=hostnames, + addresses=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -106,14 +106,14 @@ async def test_scale_up(juju: jubilant.Juju, c_writes) -> None: ) await assert_continuous_writes_increasing( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) logger.info("Stopping continuous writes after scale up test.") logger.info(await c_writes.async_stop()) assert_continuous_writes_consistent( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -136,7 +136,7 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ ) number_of_replicas = await get_number_connected_replicas( - hostnames=get_cluster_hostnames(juju, app_name), + addresses=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -166,7 +166,7 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ ) number_of_replicas = await get_number_connected_replicas( - hostnames=get_cluster_hostnames(juju, app_name), + addresses=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -178,7 +178,7 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ c_writes.update() await assert_continuous_writes_increasing( - hostnames=get_cluster_hostnames(juju, app_name), + hostnames=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -187,7 +187,7 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ logger.info(await c_writes.async_stop()) assert_continuous_writes_consistent( - hostnames=get_cluster_hostnames(juju, app_name), + hostnames=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -211,7 +211,7 @@ async def test_scale_down_multiple_units( init_units_count = NUM_UNITS + 1 number_of_replicas = await get_number_connected_replicas( - hostnames=get_cluster_hostnames(juju, app_name), + addresses=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -237,7 +237,7 @@ async def test_scale_down_multiple_units( ) number_of_replicas = await get_number_connected_replicas( - hostnames=get_cluster_hostnames(juju, app_name), + addresses=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -253,7 +253,7 @@ async def test_scale_down_multiple_units( c_writes.update() await assert_continuous_writes_increasing( - hostnames=get_cluster_hostnames(juju, app_name), + hostnames=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -262,7 +262,7 @@ async def test_scale_down_multiple_units( logger.info(await c_writes.async_stop()) assert_continuous_writes_consistent( - hostnames=get_cluster_hostnames(juju, app_name), + hostnames=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -290,10 +290,10 @@ async def test_scale_down_to_zero_and_back_up( timeout=1200, ) - hostnames = get_cluster_hostnames(juju, app_name) + addresses = get_cluster_addresses(juju, app_name) connected_replicas = await get_number_connected_replicas( - hostnames=hostnames, + addresses=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -304,14 +304,14 @@ async def test_scale_down_to_zero_and_back_up( c_writes.start() await asyncio.sleep(10) # let the continuous writes write some data await assert_continuous_writes_increasing( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) logger.info("Stopping continuous writes after scale up test.") logger.info(await c_writes.async_stop()) assert_continuous_writes_consistent( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) @@ -361,7 +361,7 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_w "Primary endpoint did not change after removing primary unit." ) logger.info(f"New primary endpoint after scale down is {new_primary_endpoint}.") - hostnames = get_cluster_hostnames(juju, app_name) + hostnames = get_cluster_addresses(juju, app_name) await assert_continuous_writes_increasing( hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN.value, diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 506e9ba..c75bd96 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -229,15 +229,15 @@ def verify_unit_count( return all(count == len(status.get_units(app)) for app, count in unit_count.items()) -def get_cluster_hostnames(juju: jubilant.Juju, app_name: str) -> list[str]: - """Get the hostnames of all units in the Valkey application. +def get_cluster_addresses(juju: jubilant.Juju, app_name: str) -> list[str]: + """Get the addresses of all units in the Valkey application. Args: juju: The Juju client instance. app_name: The name of the Valkey application. Returns: - A list of hostnames for all units in the Valkey application. + A list of addresses for all units in the Valkey application. """ status = juju.status() model_info = juju.show_model() @@ -378,18 +378,18 @@ def download_client_certificate_from_unit( def get_primary_ip( - juju: jubilant.Juju, app: str, tls_enabled: bool = False, hostnames: list[str] | None = None + juju: jubilant.Juju, app: str, tls_enabled: bool = False, addresses: list[str] | None = None ) -> str: """Get the primary node of the Valkey cluster. Returns: The IP address of the primary node. """ - hostnames = hostnames or get_cluster_hostnames(juju, app) - for hostname in hostnames: + addresses = addresses or get_cluster_addresses(juju, app) + for address in addresses: try: replication_info = exec_valkey_cli( - hostname, + address, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju), command="info replication", @@ -397,9 +397,9 @@ def get_primary_ip( ).stdout # if master then we return the hostname if "role:master" in replication_info: - return hostname + return address except (subprocess.CalledProcessError, subprocess.TimeoutExpired) as e: - logger.warning(f"Error executing Valkey CLI on {hostname}: {e}") + logger.warning(f"Error executing Valkey CLI on {address}: {e}") raise ValueError("No primary node found in the cluster") @@ -420,7 +420,7 @@ def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN async def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: # Connect to Valkey - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) # Configuration value_size_bytes = 1024 # 1KB per value @@ -440,7 +440,7 @@ async def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: # Generate a fixed random block to reuse (saves CPU cycles on generation) random_data = os.urandom(value_size_bytes).hex()[:value_size_bytes] - async with create_valkey_client(hostnames, password=get_password(juju)) as client: + async with create_valkey_client(addresses, password=get_password(juju)) as client: try: while keys_added < total_keys: data = { @@ -616,7 +616,7 @@ async def ping_cluster( async def get_number_connected_replicas( - hostnames: list[str], + addresses: list[str], username: str, password: str, tls_enabled: bool = False, @@ -624,7 +624,7 @@ async def get_number_connected_replicas( """Get the number of connected replicas in the Valkey cluster. Args: - hostnames: List of hostnames of the Valkey cluster nodes. + addresses: List of addresses of the Valkey cluster nodes. username: The username for authentication. password: The password for authentication. tls_enabled: Whether TLS certificates are needed. @@ -633,7 +633,7 @@ async def get_number_connected_replicas( The number of connected replicas. """ async with create_valkey_client( - hostnames=hostnames, + hostnames=addresses, username=username, password=password, tls_enabled=tls_enabled, diff --git a/tests/integration/test_charm.py b/tests/integration/test_charm.py index 24f17a2..de83f2c 100644 --- a/tests/integration/test_charm.py +++ b/tests/integration/test_charm.py @@ -23,7 +23,7 @@ does_status_match, exec_valkey_cli, fast_forward, - get_cluster_hostnames, + get_cluster_addresses, get_password, get_secret_by_label, ping, @@ -57,20 +57,20 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) async def test_authentication(juju: jubilant.Juju) -> None: """Assert that we can authenticate to valkey.""" - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) # try without authentication with pytest.raises(NoAuthError): - await auth_test(hostnames, username=None, password=None) + await auth_test(addresses, username=None, password=None) # Authenticate with internal user password = get_password(juju, user=CharmUsers.VALKEY_ADMIN) assert password is not None, "Admin password secret not found" - for hostname in hostnames: + for address in addresses: assert ( "PONG" - in exec_valkey_cli(hostname, CharmUsers.VALKEY_ADMIN.value, password, "ping").stdout + in exec_valkey_cli(address, CharmUsers.VALKEY_ADMIN.value, password, "ping").stdout ), "Failed to authenticate with Valkey cluster using CLI" @@ -91,21 +91,21 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: new_password_secret = get_password(juju, user=CharmUsers.VALKEY_ADMIN) assert new_password_secret == new_password, "Admin password not updated in secret" - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) # confirm old password no longer works with pytest.raises(WrongPassError): - await auth_test(hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=old_password) + await auth_test(addresses, username=CharmUsers.VALKEY_ADMIN.value, password=old_password) assert ( await ping_cluster( - hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + addresses, username=CharmUsers.VALKEY_ADMIN.value, password=new_password ) is True ), "Failed to authenticate with new admin password" assert ( await set_key( - hostnames, + addresses, username=CharmUsers.VALKEY_ADMIN.value, password=new_password, key=TEST_KEY, @@ -124,18 +124,18 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: timeout=1200, ) - for hostname in get_cluster_hostnames(juju, APP_NAME): + for address in get_cluster_addresses(juju, APP_NAME): assert ( - ping(hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) is True + ping(address, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) is True ), ( - f"Failed to authenticate with admin password after removing user secret on host {hostname}" + f"Failed to authenticate with admin password after removing user secret on host {address}" ) assert ( exec_valkey_cli( - hostname, CharmUsers.VALKEY_ADMIN.value, new_password, f"get {TEST_KEY}" + address, CharmUsers.VALKEY_ADMIN.value, new_password, f"get {TEST_KEY}" ).stdout == TEST_VALUE - ), f"Failed to read data after admin password update on host {hostname}" + ), f"Failed to read data after admin password update on host {address}" async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None: @@ -171,7 +171,7 @@ async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None # perform read operation with the updated password assert ( await ping_cluster( - get_cluster_hostnames(juju, APP_NAME), + get_cluster_addresses(juju, APP_NAME), username=CharmUsers.VALKEY_ADMIN.value, password=new_password, ) @@ -180,7 +180,7 @@ async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None assert ( await set_key( - get_cluster_hostnames(juju, APP_NAME), + get_cluster_addresses(juju, APP_NAME), username=CharmUsers.VALKEY_ADMIN.value, password=new_password, key=TEST_KEY, @@ -229,14 +229,14 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: ) # perform read operation with the updated password - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) assert await ping_cluster( - hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + addresses, username=CharmUsers.VALKEY_ADMIN.value, password=new_password ), "Failed to authenticate with new admin password" assert ( await set_key( - hostnames, + addresses, username=CharmUsers.VALKEY_ADMIN.value, password=new_password, key=TEST_KEY, @@ -245,18 +245,18 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: == "OK" ), "Failed to write data after admin password update" - for hostname in hostnames: + for address in addresses: assert ( - ping(hostname, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) is True + ping(address, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) is True ), ( - f"Failed to authenticate with admin password after removing user secret on host {hostname}" + f"Failed to authenticate with admin password after removing user secret on host {address}" ) assert ( exec_valkey_cli( - hostname, CharmUsers.VALKEY_ADMIN.value, new_password, f"get {TEST_KEY}" + address, CharmUsers.VALKEY_ADMIN.value, new_password, f"get {TEST_KEY}" ).stdout == TEST_VALUE - ), f"Failed to read data after admin password update on host {hostname}" + ), f"Failed to read data after admin password update on host {address}" logger.info("Password update successful after secret was granted") @@ -276,10 +276,10 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: ) # perform pings with the updated replica password - for hostname in get_cluster_hostnames(juju, APP_NAME): + for address in get_cluster_addresses(juju, APP_NAME): assert ( - ping(hostname, username=CharmUsers.VALKEY_REPLICA.value, password=replica_password) + ping(address, username=CharmUsers.VALKEY_REPLICA.value, password=replica_password) is True ), ( - f"Failed to authenticate with replica password after removing user secret on host {hostname}" + f"Failed to authenticate with replica password after removing user secret on host {address}" ) diff --git a/tests/integration/tls/test_certificate_options.py b/tests/integration/tls/test_certificate_options.py index e42698d..9d9776b 100644 --- a/tests/integration/tls/test_certificate_options.py +++ b/tests/integration/tls/test_certificate_options.py @@ -21,7 +21,7 @@ are_apps_active_and_agents_idle, does_status_match, download_client_certificate_from_unit, - get_cluster_hostnames, + get_cluster_addresses, get_password, set_key, ) @@ -259,9 +259,9 @@ async def test_certificate_denied(juju: jubilant.Juju) -> None: ) logger.info("Ensure access without TLS is still possible") - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) result = await set_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=False, diff --git a/tests/integration/tls/test_certificate_rotation.py b/tests/integration/tls/test_certificate_rotation.py index 2313463..a94b866 100644 --- a/tests/integration/tls/test_certificate_rotation.py +++ b/tests/integration/tls/test_certificate_rotation.py @@ -20,7 +20,7 @@ auth_test, does_status_match, download_client_certificate_from_unit, - get_cluster_hostnames, + get_cluster_addresses, get_key, get_password, set_key, @@ -74,9 +74,9 @@ async def test_certificate_expiration(juju: jubilant.Juju) -> None: download_client_certificate_from_unit(juju, APP_NAME) logger.info("Check access with TLS enabled") - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) result = await set_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -86,7 +86,7 @@ async def test_certificate_expiration(juju: jubilant.Juju) -> None: assert result == "OK", "Failed to write data with TLS enabled" assert await get_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -104,7 +104,7 @@ async def test_certificate_expiration(juju: jubilant.Juju) -> None: logger.info("Check access with previous certificate fails after expiration") with pytest.raises(Exception) as exc_info: await auth_test( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -125,7 +125,7 @@ async def test_certificate_expiration(juju: jubilant.Juju) -> None: logger.info("Check access with updated certificate") download_client_certificate_from_unit(juju, APP_NAME) result = await set_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -135,7 +135,7 @@ async def test_certificate_expiration(juju: jubilant.Juju) -> None: assert result == "OK", "Failed to write data with updated certificate" assert await get_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -188,9 +188,9 @@ async def test_ca_rotation_by_config_change(juju: jubilant.Juju) -> None: assert old_certificate != new_certificate, "Certificate was not updated" logger.info("Check access with updated certificate") - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) result = await set_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -200,7 +200,7 @@ async def test_ca_rotation_by_config_change(juju: jubilant.Juju) -> None: assert result == "OK", "Failed to write data with updated certificate" assert await get_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -253,9 +253,9 @@ async def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: assert old_certificate, "Failed to get current certificate" logger.info("Check access with current TLS certificate") - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) result = await set_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -265,7 +265,7 @@ async def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: assert result == "OK", "Failed to write data with TLS enabled" assert await get_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -282,7 +282,7 @@ async def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: logger.info("Check access with previous certificate fails after expiration") with pytest.raises(Exception) as exc_info: await auth_test( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -303,9 +303,9 @@ async def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: assert old_certificate != new_certificate, "Certificate was not updated" logger.info("Check access with updated certificate") - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) result = await set_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -315,7 +315,7 @@ async def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: assert result == "OK", "Failed to write data with updated certificate" assert await get_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, diff --git a/tests/integration/tls/test_private_key.py b/tests/integration/tls/test_private_key.py index 0ec5997..435f202 100644 --- a/tests/integration/tls/test_private_key.py +++ b/tests/integration/tls/test_private_key.py @@ -18,7 +18,7 @@ are_agents_idle, does_status_match, download_client_certificate_from_unit, - get_cluster_hostnames, + get_cluster_addresses, get_key, get_password, set_key, @@ -97,9 +97,9 @@ async def test_valid_private_key(juju: jubilant.Juju) -> None: download_client_certificate_from_unit(juju, APP_NAME) logger.info("Check access with TLS enabled") - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) result = await set_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -109,7 +109,7 @@ async def test_valid_private_key(juju: jubilant.Juju) -> None: assert result == "OK", "Failed to write data with TLS enabled" assert await get_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -147,9 +147,9 @@ async def test_private_key_updated(juju: jubilant.Juju) -> None: download_client_certificate_from_unit(juju, APP_NAME) logger.info("Check access with TLS enabled") - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) result = await set_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -159,7 +159,7 @@ async def test_private_key_updated(juju: jubilant.Juju) -> None: assert result == "OK", "Failed to write data with TLS enabled" assert await get_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, diff --git a/tests/integration/tls/test_tls.py b/tests/integration/tls/test_tls.py index a5010d8..2358a5c 100644 --- a/tests/integration/tls/test_tls.py +++ b/tests/integration/tls/test_tls.py @@ -16,7 +16,7 @@ are_apps_active_and_agents_idle, auth_test, download_client_certificate_from_unit, - get_cluster_hostnames, + get_cluster_addresses, get_key, get_password, set_key, @@ -50,10 +50,10 @@ async def test_tls_enabled(juju: jubilant.Juju) -> None: logger.info("Downloading TLS certificates from deployed app.") download_client_certificate_from_unit(juju, APP_NAME) - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) logger.info("Check access with TLS enabled") result = await set_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -63,7 +63,7 @@ async def test_tls_enabled(juju: jubilant.Juju) -> None: assert result == "OK", "Failed to write data with TLS enabled" assert await get_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -72,7 +72,7 @@ async def test_tls_enabled(juju: jubilant.Juju) -> None: logger.info("Check access without certs fails when TLS enabled") with pytest.raises(Exception) as exc_info: - await auth_test(hostnames, username=None, password=None) + await auth_test(addresses, username=None, password=None) assert "Connection error" in str(exc_info.value), "Access without TLS did not fail as expected" @@ -98,10 +98,10 @@ async def test_disable_tls(juju: jubilant.Juju) -> None: timeout=600, ) - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) logger.info("Check access with TLS disabled") result = await set_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=False, @@ -111,7 +111,7 @@ async def test_disable_tls(juju: jubilant.Juju) -> None: assert result == "OK", "Failed to write data after TLS was disabled" assert await get_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=False, @@ -131,10 +131,10 @@ async def test_enable_tls(juju: jubilant.Juju) -> None: logger.info("Downloading TLS certificates from deployed app.") download_client_certificate_from_unit(juju, APP_NAME) - hostnames = get_cluster_hostnames(juju, APP_NAME) + addresses = get_cluster_addresses(juju, APP_NAME) logger.info("Check access with TLS enabled") result = await set_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -144,7 +144,7 @@ async def test_enable_tls(juju: jubilant.Juju) -> None: assert result == "OK", "Failed to write data with TLS enabled" assert await get_key( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -153,5 +153,5 @@ async def test_enable_tls(juju: jubilant.Juju) -> None: logger.info("Check access without certs fails when TLS enabled") with pytest.raises(Exception) as exc_info: - await auth_test(hostnames, username=None, password=None) + await auth_test(addresses, username=None, password=None) assert "Connection error" in str(exc_info.value), "Access without TLS did not fail as expected" From e8450d1a2d30164ed0d855bae0c2e24172cfe068 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 13 Apr 2026 08:31:45 +0000 Subject: [PATCH 232/282] add get cw state action --- .../clients/requirer-charm/charmcraft.yaml | 5 ++++ .../clients/requirer-charm/src/charm.py | 24 +++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index 7e38e4d..a9db8e9 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -120,6 +120,11 @@ actions: type: boolean default: true + get-continuous-writes-state: + description: > + Return the last written value and total count from the continuous-writes + state file without stopping the daemon. + clear-continuous-writes: description: > Delete the continuous-writes key from Valkey. Can be run while the daemon diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index 9c04af1..7f71422 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -145,6 +145,10 @@ def __init__(self, framework: ops.Framework): framework.observe( self.on.clear_continuous_writes_action, self._on_clear_continuous_writes_action ) + framework.observe( + self.on.get_continuous_writes_state_action, + self._on_get_continuous_writes_state_action, + ) framework.observe(self.valkey_interface.on.endpoints_changed, self._on_endpoints_changed) framework.observe(self.on.config_changed, self._on_config_changed) @@ -516,6 +520,26 @@ def _on_clear_continuous_writes_action(self, event: ops.ActionEvent) -> None: event.set_results({"ok": True}) + def _on_get_continuous_writes_state_action(self, event: ops.ActionEvent) -> None: + """Handle get-continuous-writes-state action.""" + if not CWPath.STATE.value.exists(): + event.fail("State file not found — the daemon may not have written anything yet.") + return + + try: + state = json.loads(CWPath.STATE.value.read_text()) + except (json.JSONDecodeError, OSError) as exc: + event.fail(f"Failed to read state file: {exc}") + return + + event.set_results( + { + "ok": True, + "last-written-value": state["last_written"], + "count": state["count"], + } + ) + def _on_resource_created(self, event: ResourceCreatedEvent[ResourceProviderModel]) -> None: """Handle resource created event.""" logger.info("Resource created") From db99f80f6fa746d48ce44ea00c4da0c7d606662b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 13 Apr 2026 11:06:29 +0000 Subject: [PATCH 233/282] update integration tests to use charm cw --- tests/integration/conftest.py | 40 ++- tests/integration/continuous_writes.py | 394 ----------------------- tests/integration/cw_helpers.py | 172 +++------- tests/integration/ha/test_network_cut.py | 12 +- tests/integration/ha/test_scaling.py | 58 ++-- 5 files changed, 112 insertions(+), 564 deletions(-) delete mode 100644 tests/integration/continuous_writes.py diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py index d6366ea..0952981 100644 --- a/tests/integration/conftest.py +++ b/tests/integration/conftest.py @@ -8,35 +8,33 @@ import pytest from literals import Substrate -from tests.integration.continuous_writes import ContinuousWrites -from tests.integration.helpers import APP_NAME +from tests.integration.helpers import are_apps_active_and_agents_idle logger = logging.getLogger(__name__) - -@pytest.fixture(scope="function") -def c_writes(juju: jubilant.Juju): - """Create instance of the ContinuousWrites.""" - app = APP_NAME - logger.info("Creating ContinuousWrites instance for app with name %s", app) - return ContinuousWrites(juju, app) +CW_RUNNER_NAME = "cw-runner" -@pytest.fixture(scope="function") -def c_writes_runner(juju: jubilant.Juju, c_writes: ContinuousWrites): - """Start continuous write operations and clears writes at the end of the test.""" - c_writes.start() - yield - logger.info("Clearing continuous writes after test completion") - logger.info(c_writes.clear()) +@pytest.fixture +def cw_runner_charm(arch: str) -> str: + """Path to the charm file to use for testing.""" + # Return str instead of pathlib.Path since python-libjuju's model.deploy(), juju deploy, and + # juju bundle files expect local charms to begin with `./` or `/` to distinguish them from + # Charmhub charms. + return f"./tests/integration/clients/requirer-charm/requirer-charm_ubuntu@24.04-{arch}.charm" @pytest.fixture(scope="function") -async def c_writes_async_clean(c_writes: ContinuousWrites): - """Clear continuous write operations at the end of the test.""" - yield - logger.info("Clearing continuous writes after test completion") - logger.info(await c_writes.async_clear()) +def c_writes(juju: jubilant.Juju, cw_runner_charm: str) -> None: + """Deploy continous writes runner charm if not already deployed.""" + if CW_RUNNER_NAME not in juju.status().apps: + juju.deploy(cw_runner_charm, app=CW_RUNNER_NAME) + juju.wait( + lambda status: are_apps_active_and_agents_idle(status, CW_RUNNER_NAME, idle_period=30), + timeout=600, + delay=5, + successes=3, + ) @pytest.fixture(scope="session") diff --git a/tests/integration/continuous_writes.py b/tests/integration/continuous_writes.py deleted file mode 100644 index 0a34337..0000000 --- a/tests/integration/continuous_writes.py +++ /dev/null @@ -1,394 +0,0 @@ -#!/usr/bin/env python3 -# Copyright 2026 Canonical Ltd. -# See LICENSE file for licensing details. - -import asyncio -import logging -import multiprocessing -import queue -import time -from contextlib import asynccontextmanager -from multiprocessing import log_to_stderr -from pathlib import Path -from types import SimpleNamespace -from typing import Optional - -import jubilant -from glide import ( - AdvancedGlideClientConfiguration, - BackoffStrategy, - GlideClient, - GlideClientConfiguration, - NodeAddress, - ServerCredentials, - TlsAdvancedConfiguration, -) -from tenacity import ( - retry, - stop_after_attempt, - wait_fixed, - wait_random, -) - -from literals import CLIENT_PORT, TLS_PORT, CharmUsers -from tests.integration.helpers import get_data_bag, get_password - -logger = logging.getLogger(__name__) - - -class WriteFailedError(Exception): - """Raised when a single write operation has failed.""" - - -def get_active_hostnames(juju: jubilant.Juju, app_name: str) -> str: - """Get hostnames of units in started state and not marked for scale down.""" - return ",".join( - [ - unit["private-ip"] - for unit in get_data_bag(juju, app_name, "valkey-peers").values() - if unit.get("start-state", "") == "started" - and unit.get("scale-down-state", None) is None - ] - ) - - -class ContinuousWrites: - """Utility class for managing continuous async writes to Valkey using GLIDE.""" - - KEY = "cw_key" - LAST_WRITTEN_VAL_PATH = "last_written_value" - VALKEY_PORT = 6379 - - def __init__( - self, - juju: jubilant.Juju, - app: str, - initial_count: int = 0, - in_between_sleep: float = 1.0, - tls_enabled: bool = False, - ): - self._juju = juju - self._app = app - self._is_stopped = True - self._event = None - self._queue = None - self._process = None - self._initial_count = initial_count - self._in_between_sleep = in_between_sleep - self._mp_ctx = multiprocessing.get_context("spawn") - self.tls_enabled = tls_enabled - - def _get_config(self) -> SimpleNamespace: - """Fetch current cluster configuration from Juju.""" - return SimpleNamespace( - endpoints=get_active_hostnames(self._juju, self._app), - valkey_password=get_password(self._juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=self.tls_enabled, - ) - - async def _create_glide_client(self, config: Optional[SimpleNamespace] = None) -> GlideClient: - """Asynchronously create and return a configured GlideClient.""" - conf = config or self._get_config() - addresses = [ - NodeAddress(host, TLS_PORT if conf.tls_enabled else CLIENT_PORT) - for host in conf.endpoints.split(",") - ] - - credentials = ServerCredentials( - username=CharmUsers.VALKEY_ADMIN.value, password=conf.valkey_password - ) - - tls_cert = tls_key = tls_ca_cert = None - if conf.tls_enabled: - # Read locally stored certificate files - with open("client.pem", "rb") as f: - tls_cert = f.read() - with open("client.key", "rb") as f: - tls_key = f.read() - with open("client_ca.pem", "rb") as f: - tls_ca_cert = f.read() - logger.info( - "TLS is enabled. Loaded client certificate, key, and CA cert for Glide client configuration." - ) - - tls_config = TlsAdvancedConfiguration( - client_cert_pem=tls_cert if conf.tls_enabled else None, - client_key_pem=tls_key if conf.tls_enabled else None, - root_pem_cacerts=tls_ca_cert if conf.tls_enabled else None, - use_insecure_tls=True if conf.tls_enabled else None, - ) - - glide_config = GlideClientConfiguration( - addresses=addresses, - client_name="continuous_writes_client", - request_timeout=1000, - credentials=credentials, - reconnect_strategy=BackoffStrategy(num_of_retries=1, factor=50, exponent_base=2), - use_tls=True if conf.tls_enabled else False, - advanced_config=AdvancedGlideClientConfiguration(tls_config=tls_config), - ) - - return await GlideClient.create(glide_config) - - @retry(wait=wait_fixed(5) + wait_random(0, 5), stop=stop_after_attempt(5)) - def start(self) -> None: - """Run continuous writes in the background.""" - if not self._is_stopped: - self.clear() - - self._is_stopped = False - # Create primitives using the spawn context - self._event = self._mp_ctx.Event() - self._queue = self._mp_ctx.Queue() - - last_written_file = Path(self.LAST_WRITTEN_VAL_PATH) - if not last_written_file.exists(): - last_written_file.write_text(str(self._initial_count)) - - self._process = self._mp_ctx.Process( - target=self._run_process, - name="continuous_writes", - args=(self._event, self._queue, self._initial_count, self._in_between_sleep), - ) - - self.update() - self._process.start() - - def update(self) -> None: - """Update cluster related conf (scaling, password changes).""" - if self._queue: - self._queue.put(self._get_config()) - - @retry(wait=wait_fixed(5) + wait_random(0, 5), stop=stop_after_attempt(5)) - def clear(self) -> SimpleNamespace | None: - """Stop writes and delete the tracking key/file.""" - result = None - if not self._is_stopped: - result = self.stop() - - try: - asyncio.run(self._async_delete()) - except Exception as e: - logger.warning("Failed to clear continuous writes data from Valkey: %s", e) - - last_written_file = Path(self.LAST_WRITTEN_VAL_PATH) - if last_written_file.exists(): - last_written_file.unlink() - return result - - @retry(wait=wait_fixed(5) + wait_random(0, 5), stop=stop_after_attempt(5)) - async def async_clear(self) -> SimpleNamespace | None: - """Stop writes and delete the tracking key/file.""" - result = None - if not self._is_stopped: - result = await self.async_stop() - - try: - await self._async_delete() - except Exception as e: - logger.warning("Failed to clear continuous writes data from Valkey: %s", e) - - last_written_file = Path(self.LAST_WRITTEN_VAL_PATH) - if last_written_file.exists(): - last_written_file.unlink() - return result - - async def _async_delete(self) -> None: - client = await self._create_glide_client() - try: - await client.delete([self.KEY]) - finally: - await client.close() - - def count(self) -> int: - """Return number of items in the list.""" - return asyncio.run(self._async_count()) - - async def _async_count(self) -> int: - client = await self._create_glide_client() - try: - return await client.llen(self.KEY) - finally: - await client.close() - - def max_stored_id(self) -> int: - """Return the most recently inserted ID (top of list).""" - return asyncio.run(self._async_max_stored_id()) - - async def _async_max_stored_id(self) -> int: - client = await self._create_glide_client() - try: - val = await client.lindex(self.KEY, 0) - return int(val.decode()) if val else 0 - finally: - await client.close() - - @retry(wait=wait_fixed(5) + wait_random(0, 5), stop=stop_after_attempt(5)) - def stop(self) -> SimpleNamespace: - """Stop the background process and return summary statistics.""" - if not self._is_stopped and self._process: - self._event.set() - self._process.join(timeout=30) - self._process.terminate() - self._is_stopped = True - - result = SimpleNamespace() - result.max_stored_id = self.max_stored_id() - result.count = self.count() - result.last_expected_id = int(Path(self.LAST_WRITTEN_VAL_PATH).read_text().strip()) - - return result - - @retry(wait=wait_fixed(5) + wait_random(0, 5), stop=stop_after_attempt(5)) - async def async_stop(self) -> SimpleNamespace: - """Stop the background process and return summary statistics.""" - if not self._is_stopped and self._process: - self._event.set() - self._process.join(timeout=30) - self._process.terminate() - self._is_stopped = True - - result = SimpleNamespace() - result.max_stored_id = await self._async_max_stored_id() - result.count = await self._async_count() - result.last_expected_id = int(Path(self.LAST_WRITTEN_VAL_PATH).read_text().strip()) - - return result - - @staticmethod - def _run_process(event, data_queue, starting_number: int, in_between_sleep: float): - """Start synchronously the asyncio event loop.""" - proc_logger = log_to_stderr() - proc_logger.setLevel(logging.INFO) - - # FIX 2: Do the blocking read synchronously BEFORE starting the async loop - initial_config = data_queue.get(block=True) - - asyncio.run( - ContinuousWrites._async_run( - event, data_queue, starting_number, initial_config, in_between_sleep, proc_logger - ) - ) - - @staticmethod - async def _async_run( - event, - data_queue, - starting_number: int, - initial_config: SimpleNamespace, - in_between_sleep: float, - proc_logger: logging.Logger, - ): - """Async loop for writing data continuously.""" - - async def _make_client(conf: SimpleNamespace) -> GlideClient: - addresses = [ - NodeAddress(host, TLS_PORT if conf.tls_enabled else CLIENT_PORT) - for host in conf.endpoints.split(",") - ] - - credentials = ServerCredentials( - username=CharmUsers.VALKEY_ADMIN.value, password=conf.valkey_password - ) - - tls_cert = tls_key = tls_ca_cert = None - if conf.tls_enabled: - # Read locally stored certificate files - with open("client.pem", "rb") as f: - tls_cert = f.read() - with open("client.key", "rb") as f: - tls_key = f.read() - with open("client_ca.pem", "rb") as f: - tls_ca_cert = f.read() - - tls_config = TlsAdvancedConfiguration( - client_cert_pem=tls_cert if conf.tls_enabled else None, - client_key_pem=tls_key if conf.tls_enabled else None, - root_pem_cacerts=tls_ca_cert if conf.tls_enabled else None, - use_insecure_tls=True if conf.tls_enabled else None, - ) - - glide_config = GlideClientConfiguration( - addresses=addresses, - client_name="continuous_writes_worker", - request_timeout=1000, - credentials=credentials, - reconnect_strategy=BackoffStrategy(num_of_retries=1, factor=50, exponent_base=2), - use_tls=True if conf.tls_enabled else False, - advanced_config=AdvancedGlideClientConfiguration(tls_config=tls_config), - ) - - return await GlideClient.create(glide_config) - - @asynccontextmanager - async def with_client(conf: SimpleNamespace): - client = await _make_client(conf) - try: - yield client - finally: - await client.close() - - current_val = starting_number - last_written_value = starting_number - config = initial_config - - proc_logger.info("Starting continuous async writes from %s", current_val) - - try: - while not event.is_set(): - try: - config = data_queue.get_nowait() - proc_logger.info("Configuration updated, client reconnected.") - except queue.Empty: - pass - - try: - proc_logger.info("Writing value: %s", current_val) - proc_logger.info("Current endpoints=%s", config.endpoints) - async with with_client(config) as client: - if not ( - res := await asyncio.wait_for( - client.lpush(ContinuousWrites.KEY, [str(current_val)]), timeout=5 - ) - ): - raise WriteFailedError("LPUSH returned 0/None") - proc_logger.info("Length after write: %s", res) - last_written_value = current_val - except Exception as e: - proc_logger.warning("Write failed at %s: %s", current_val, e) - finally: - await asyncio.sleep(in_between_sleep) - if event.is_set(): - break - - current_val += 1 - - finally: - Path(ContinuousWrites.LAST_WRITTEN_VAL_PATH).write_text(str(last_written_value)) - proc_logger.info("Continuous writes process exiting.") - - -if __name__ == "__main__": - import jubilant - - juju_env = jubilant.Juju(model="testing") - cw = ContinuousWrites(juju=juju_env, app="valkey", in_between_sleep=0.5) - cw.clear() - cw.start() - # stop on ctrl + C or after some time - hostnames = get_active_hostnames(juju_env, "valkey") - try: - while True: - time.sleep(1) - if new_hostnames := get_active_hostnames(juju_env, "valkey") != hostnames: - logger.info( - "Hostnames changed from %s to %s, updating continuous writes client.", - hostnames, - new_hostnames, - ) - hostnames = new_hostnames - cw.update() - except KeyboardInterrupt: - pass - stats = cw.clear() - print(f"Stopped. Stats: {stats}") diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index 2b704f9..61c41ec 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -6,13 +6,12 @@ import base64 import json import logging -import subprocess from pathlib import Path -from types import SimpleNamespace +from typing import NamedTuple import jubilant -from tests.integration.continuous_writes import ContinuousWrites +from tests.integration.conftest import CW_RUNNER_NAME from tests.integration.helpers import ( APP_NAME, TLS_CA_FILE, @@ -22,88 +21,28 @@ create_valkey_client, download_client_certificate_from_unit, exec_valkey_cli, - get_cluster_hostnames, + get_cluster_addresses, get_password, ) logger = logging.getLogger(__name__) -# WRITES_LAST_WRITTEN_VAL_PATH = "last_written_value" -# KEY = "cw_key" -KEY = ContinuousWrites.KEY -WRITES_LAST_WRITTEN_VAL_PATH = ContinuousWrites.LAST_WRITTEN_VAL_PATH +class ContinuousWritesStats(NamedTuple): + last_written_value: int + total_count: int -def start_continuous_writes( - endpoints: str, - valkey_user: str, - valkey_password: str, - sentinel_user: str, - sentinel_password: str, -) -> None: - """Create a subprocess instance of continuous writes and start writing data to Valkey. - - Args: - endpoints: Comma-separated list of Valkey endpoints. - valkey_user: Valkey username. - valkey_password: Valkey password. - sentinel_user: Sentinel username. - sentinel_password: Sentinel password. - """ - subprocess.Popen( - [ - "python3", - "tests/integration/continuous_writes.py", - endpoints, - valkey_user, - valkey_password, - sentinel_user, - sentinel_password, - ] - ) - - -def stop_continuous_writes() -> None: - """Shut down the subprocess instance of the continuous writes.""" - proc = subprocess.Popen(["pkill", "-15", "-f", "continuous_writes.py"]) - proc.communicate() - - -async def assert_continuous_writes_increasing( - hostnames: list[str], - username: str, - password: str, - tls_enabled: bool = False, -) -> None: - """Assert that the continuous writes are increasing. - - Args: - hostnames: List of Valkey hostnames to connect to. - username: Valkey username. - password: Valkey password. - tls_enabled: Whether TLS is enabled. - """ - async with create_valkey_client( - hostnames, - username=username, - password=password, - tls_enabled=tls_enabled, - ) as client: - writes_count = await client.llen(KEY) - await asyncio.sleep(10) - more_writes = await client.llen(KEY) - assert more_writes > writes_count, "Writes not continuing to DB" - logger.info("Continuous writes are increasing.") +KEY = "cw_key" -def configure_requirer_charm( +def configure_cw_runner( juju: jubilant.Juju, - app: str, + app: str = CW_RUNNER_NAME, valkey_app: str = APP_NAME, tls_enabled: bool = False, ) -> None: - """Configure the requirer charm to connect to Valkey via config options. + """Configure the continuous writes runner charm to connect to Valkey via config options. Endpoints and the admin password are fetched automatically from the Juju model. When ``tls_enabled`` is True, client certificates are downloaded @@ -111,11 +50,11 @@ def configure_requirer_charm( Args: juju: Juju client instance. - app: Name of the requirer charm application to configure. + app: Name of the continuous writes runner charm application to configure. valkey_app: Name of the Valkey application to fetch endpoints from. tls_enabled: Whether TLS is enabled. """ - hostnames = get_cluster_hostnames(juju, valkey_app) + hostnames = get_cluster_addresses(juju, valkey_app) endpoints = ",".join(f"{h}:6379" for h in hostnames) password = get_password(juju, user=CharmUsers.VALKEY_ADMIN) @@ -139,9 +78,9 @@ def configure_requirer_charm( juju.config(app=app, values=values) -def start_charm_continuous_writes( +def start_continuous_writes( juju: jubilant.Juju, - unit: str, + unit: str = f"{CW_RUNNER_NAME}/0", sleep_interval: float = 1.0, config: dict | None = None, clear: bool = True, @@ -177,7 +116,9 @@ def start_charm_continuous_writes( return pid -def stop_charm_continuous_writes(juju: jubilant.Juju, unit: str) -> SimpleNamespace: +def stop_continuous_writes( + juju: jubilant.Juju, unit: str = f"{CW_RUNNER_NAME}/0" +) -> ContinuousWritesStats: """Trigger the stop-continuous-writes action and return write statistics. Args: @@ -185,25 +126,26 @@ def stop_charm_continuous_writes(juju: jubilant.Juju, unit: str) -> SimpleNamesp unit: Unit name to run the action on. Returns: - Namespace with ``last_written_value`` (last integer successfully - written to Valkey) and ``count`` (number of items in the list). + ``ContinuousWritesStats`` with ``last_written_value`` (last integer + successfully written to Valkey) and ``total_count`` (number of items + in the list). """ result = juju.run(unit, "stop-continuous-writes") assert result.results.get("ok"), f"stop-continuous-writes failed: {result}" - stats = SimpleNamespace( + stats = ContinuousWritesStats( last_written_value=int(result.results["last-written-value"]), - count=int(result.results["count"]), + total_count=int(result.results["count"]), ) logger.info( "Continuous-writes stopped on %s — last_written=%d, count=%d", unit, stats.last_written_value, - stats.count, + stats.total_count, ) return stats -def clear_charm_continuous_writes(juju: jubilant.Juju, unit: str) -> None: +def clear_continuous_writes(juju: jubilant.Juju, unit: str) -> None: """Trigger the clear-continuous-writes action on the requirer charm unit. Deletes the continuous-writes key from Valkey. Can be called while the @@ -218,7 +160,34 @@ def clear_charm_continuous_writes(juju: jubilant.Juju, unit: str) -> None: logger.info("Continuous-writes data cleared on %s", unit) -def assert_charm_continuous_writes_consistent( +async def assert_continuous_writes_increasing( + hostnames: list[str], + username: str, + password: str, + tls_enabled: bool = False, +) -> None: + """Assert that the continuous writes are increasing. + + Args: + hostnames: List of Valkey hostnames to connect to. + username: Valkey username. + password: Valkey password. + tls_enabled: Whether TLS is enabled. + """ + async with create_valkey_client( + hostnames, + username=username, + password=password, + tls_enabled=tls_enabled, + ) as client: + writes_count = await client.llen(KEY) + await asyncio.sleep(10) + more_writes = await client.llen(KEY) + assert more_writes > writes_count, "Writes not continuing to DB" + logger.info("Continuous writes are increasing.") + + +def assert_continuous_writes_consistent( hostnames: list[str], username: str, password: str, @@ -234,7 +203,7 @@ def assert_charm_continuous_writes_consistent( hostnames: List of Valkey hostnames to check. username: Valkey username. password: Valkey password. - last_written_value: Last integer successfully written, from ``stop_charm_continuous_writes``. + last_written_value: Last integer successfully written, from ``stop_continuous_writes``. """ reference: list[int] | None = None @@ -262,38 +231,3 @@ def assert_charm_continuous_writes_consistent( len(hostnames), len(reference or []), ) - - -def assert_continuous_writes_consistent( - hostnames: list[str], - username: str, - password: str, -) -> None: - """Assert that the continuous writes are consistent. - - Args: - hostnames: List of Valkey hostnames to check. - username: Valkey username. - password: Valkey password. - """ - last_written_value = int(Path(WRITES_LAST_WRITTEN_VAL_PATH).read_text()) - - if not last_written_value: - raise ValueError("Could not read last written value from file.") - - values: list[int] | None = None - - for endpoint in hostnames: - current_values: list[int] = json.loads( - exec_valkey_cli(endpoint, username, password, f"LRANGE {KEY} 0 -1", json=True).stdout - ) - if values is None: - values = current_values - - last_value = int(current_values[0]) if current_values else None - assert last_written_value == last_value, ( - f"endpoint: {endpoint}, expected value: {last_written_value}, current value: {last_value}" - ) - assert values == current_values, ( - f"endpoint: {endpoint}, expected values: {values}, current values: {current_values}" - ) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index c29aa32..581e3da 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -10,6 +10,8 @@ from literals import Substrate from tests.integration.cw_helpers import ( assert_continuous_writes_increasing, + configure_cw_runner, + start_continuous_writes, ) from tests.integration.ha.helpers.helpers import ( cut_network_from_unit, @@ -77,7 +79,6 @@ async def test_network_cut_primary( # noqa: C901 substrate: Substrate, chaos_mesh, c_writes, - c_writes_async_clean, ) -> None: """Cut the network to the primary unit and verify that a new primary is elected.""" if ip_change and substrate == Substrate.K8S: @@ -86,9 +87,8 @@ async def test_network_cut_primary( # noqa: C901 download_client_certificate_from_unit(juju, APP_NAME) addresses = get_cluster_addresses(juju, APP_NAME) - c_writes.tls_enabled = tls_enabled - await c_writes.async_clear() - c_writes.start() + configure_cw_runner(juju, valkey_app=APP_NAME, tls_enabled=tls_enabled) + start_continuous_writes(juju, clear=True) # Get the current primary unit primary_ip = get_primary_ip(juju, APP_NAME, tls_enabled=tls_enabled) @@ -215,7 +215,9 @@ async def test_network_cut_primary( # noqa: C901 ip_change=ip_change, unit_count=NUM_UNITS, ) - c_writes.update() + configure_cw_runner( + juju, valkey_app=APP_NAME, tls_enabled=tls_enabled + ) # update hostnames after network restore logger.info( "Verifying that all units can reach the original primary unit at %s...", diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index 64d144d..eef361d 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -11,6 +11,9 @@ from tests.integration.cw_helpers import ( assert_continuous_writes_consistent, assert_continuous_writes_increasing, + configure_cw_runner, + start_continuous_writes, + stop_continuous_writes, ) from tests.integration.helpers import ( APP_NAME, @@ -72,8 +75,8 @@ async def test_scale_up(juju: jubilant.Juju, c_writes) -> None: """Make sure new units are added to the valkey downtime.""" app_name = existing_app(juju) or APP_NAME init_units_count = len(juju.status().apps[app_name].units) - await c_writes.async_clear() - c_writes.start() + configure_cw_runner(juju, valkey_app=app_name) + start_continuous_writes(juju, clear=True) # scale up juju.add_unit(app_name, num_units=2) @@ -111,13 +114,13 @@ async def test_scale_up(juju: jubilant.Juju, c_writes) -> None: password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) logger.info("Stopping continuous writes after scale up test.") - logger.info(await c_writes.async_stop()) + cw_stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + last_written_value=cw_stats.last_written_value, ) - await c_writes.async_clear() async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_writes) -> None: @@ -144,8 +147,8 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ f"Expected {init_units_count - 1} connected replicas, got {number_of_replicas}." ) - await c_writes.async_clear() - c_writes.start() + configure_cw_runner(juju, valkey_app=app_name) + start_continuous_writes(juju, clear=True) await asyncio.sleep(10) # let the continuous writes write some data # scale down @@ -175,7 +178,7 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ ) # update hostnames after scale down - c_writes.update() + configure_cw_runner(juju, valkey_app=app_name) await assert_continuous_writes_increasing( hostnames=get_cluster_addresses(juju, app_name), @@ -184,14 +187,13 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ ) logger.info("Stopping continuous writes after scale down test.") - logger.info(await c_writes.async_stop()) - + cw_stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( hostnames=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + last_written_value=cw_stats.last_written_value, ) - await c_writes.async_clear() async def test_scale_down_multiple_units( @@ -219,8 +221,9 @@ async def test_scale_down_multiple_units( f"Expected {init_units_count - 1} connected replicas, got {number_of_replicas}." ) - await c_writes.async_clear() - c_writes.start() + configure_cw_runner(juju, valkey_app=app_name) + start_continuous_writes(juju, clear=True) + await asyncio.sleep(10) # let the continuous writes write some data # scale down multiple units @@ -250,7 +253,7 @@ async def test_scale_down_multiple_units( f"Unexpected quorum value for unit {unit} after scale down" ) - c_writes.update() + configure_cw_runner(juju, valkey_app=app_name) # update hostnames after scale down await assert_continuous_writes_increasing( hostnames=get_cluster_addresses(juju, app_name), @@ -259,14 +262,14 @@ async def test_scale_down_multiple_units( ) logger.info("Stopping continuous writes after scale down test.") - logger.info(await c_writes.async_stop()) + cw_stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( hostnames=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + last_written_value=cw_stats.last_written_value, ) - await c_writes.async_clear() async def test_scale_down_to_zero_and_back_up( @@ -300,22 +303,26 @@ async def test_scale_down_to_zero_and_back_up( assert connected_replicas == NUM_UNITS - 1, ( f"Expected {NUM_UNITS - 1} connected replicas, got {connected_replicas}." ) - await c_writes.async_clear() - c_writes.start() + + configure_cw_runner(juju, valkey_app=app_name) + start_continuous_writes(juju, clear=True) + await asyncio.sleep(10) # let the continuous writes write some data await assert_continuous_writes_increasing( hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) + logger.info("Stopping continuous writes after scale up test.") - logger.info(await c_writes.async_stop()) + cw_stats = stop_continuous_writes(juju) + assert_continuous_writes_consistent( hostnames=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + last_written_value=cw_stats.last_written_value, ) - await c_writes.async_clear() async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_writes) -> None: @@ -335,8 +342,10 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_w ) init_units_count = NUM_UNITS - await c_writes.async_clear() - c_writes.start() + configure_cw_runner(juju, valkey_app=app_name) + start_continuous_writes(juju, clear=True) + await asyncio.sleep(10) # let the continuous writes write some data + primary_endpoint = get_primary_ip(juju, app_name) primary_unit = next( unit @@ -355,7 +364,7 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_w status, app_name, unit_count=init_units_count - 1, idle_period=10 ) ) - c_writes.update() + configure_cw_runner(juju, valkey_app=app_name) # update hostnames after primary unit removal new_primary_endpoint = get_primary_ip(juju, app_name) assert new_primary_endpoint != primary_endpoint, ( "Primary endpoint did not change after removing primary unit." @@ -367,14 +376,13 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_w username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), ) - logger.info("Stopping continuous writes after primary scale down test.") - logger.info(await c_writes.async_stop()) + cw_stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( hostnames=hostnames, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + last_written_value=cw_stats.last_written_value, ) - await c_writes.async_clear() def test_scale_down_remove_application(juju: jubilant.Juju) -> None: From bb0be51a8af305aa65d96fd417bc58fdad827507 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 13 Apr 2026 13:07:19 +0000 Subject: [PATCH 234/282] add assert cw increasing in requirer charm --- .../clients/requirer-charm/charmcraft.yaml | 11 +++ .../clients/requirer-charm/src/charm.py | 97 ++++++++++--------- .../requirer-charm/src/continuous_writes.py | 8 +- .../clients/requirer-charm/src/cw_helpers.py | 66 +++++++++++++ 4 files changed, 131 insertions(+), 51 deletions(-) create mode 100644 tests/integration/clients/requirer-charm/src/cw_helpers.py diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index a9db8e9..61e8071 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -125,6 +125,17 @@ actions: Return the last written value and total count from the continuous-writes state file without stopping the daemon. + assert-continuous-writes-increasing: + description: > + Assert that the continuous-writes daemon is actively writing by sampling + the state file twice with a configurable wait between samples and + verifying the count has increased. + params: + wait: + description: Seconds to wait between the two state samples (default 5) + type: number + default: 10 + clear-continuous-writes: description: > Delete the continuous-writes key from Valkey. Can be run while the daemon diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index 7f71422..fd85379 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -6,7 +6,6 @@ import asyncio import base64 -import enum import json import logging import os @@ -24,7 +23,9 @@ ) from charms.data_platform_libs.v0.data_interfaces import DatabaseCreatedEvent, DatabaseRequires from client import ValkeyClient -from continuous_writes import DaemonConfig, TlsConfig, clear as cw_clear +from continuous_writes import DaemonConfig, TlsConfig +from continuous_writes import clear as cw_clear +from cw_helpers import CWPath, cw_llen, wait_for_pid_exit from dpcharmlibs.interfaces import ( DataContractV1, RequirerCommonModel, @@ -41,50 +42,6 @@ SERVICE_NAME = "some-service" # Name of Pebble service that runs in the workload container. -def _wait_for_pid_exit( - pid: int, poll_interval: int = 1, max_attempts: int = 10, force_kill: bool = True -) -> bool: - """Wait for a process to exit. - - Returns True if the process exited cleanly within max_attempts, False otherwise. - If force_kill is True and the process is still running after max_attempts, sends SIGKILL. - """ - for attempt in range(max_attempts): - time.sleep(poll_interval) - try: - os.kill(pid, 0) # signal 0 checks existence without sending a signal - except ProcessLookupError: - logger.info("Daemon PID %d exited after %d second(s).", pid, attempt * poll_interval) - return True - except OSError: - pass # EPERM — process exists but unowned; treat as still running - - logger.warning( - "Daemon PID %d did not exit after %d second(s).", - pid, - max_attempts * poll_interval, - ) - if force_kill: - logger.warning("Sending SIGKILL to daemon PID %d.", pid) - try: - os.kill(pid, signal.SIGKILL) - except OSError: - pass - return False - - -class CWPath(enum.Enum): - """Paths used by the continuous-writes daemon.""" - - CONFIG = Path("/tmp/cw_config.json") - STATE = Path("/tmp/cw_state.json") - PID = Path("/tmp/cw_daemon.pid") - LOG = Path("/tmp/cw_daemon.log") - CERT = Path("/tmp/cw_client.pem") - KEY = Path("/tmp/cw_client.key") - CA = Path("/tmp/cw_client_ca.pem") - - class RequirerCharm(ops.CharmBase): """Charm that acts as client for Valkey.""" @@ -149,6 +106,10 @@ def __init__(self, framework: ops.Framework): self.on.get_continuous_writes_state_action, self._on_get_continuous_writes_state_action, ) + framework.observe( + self.on.assert_continuous_writes_increasing_action, + self._on_assert_continuous_writes_increasing_action, + ) framework.observe(self.valkey_interface.on.endpoints_changed, self._on_endpoints_changed) framework.observe(self.on.config_changed, self._on_config_changed) @@ -469,7 +430,7 @@ def _on_stop_continuous_writes_action(self, event: ops.ActionEvent) -> None: return # Wait for the daemon to exit and flush its final state, with retries - if not _wait_for_pid_exit(pid): + if not wait_for_pid_exit(pid): logger.warning( "Daemon PID %d had to be force-killed; state file may be incomplete.", pid ) @@ -540,6 +501,48 @@ def _on_get_continuous_writes_state_action(self, event: ops.ActionEvent) -> None } ) + def _on_assert_continuous_writes_increasing_action(self, event: ops.ActionEvent) -> None: + """Handle assert-continuous-writes-increasing action.""" + if not CWPath.CONFIG.value.exists(): + event.fail("No continuous-writes config found — run start-continuous-writes first.") + return + + try: + config = DaemonConfig.from_file(CWPath.CONFIG.value) + except Exception as exc: + event.fail(f"Failed to load continuous-writes config: {exc}") + return + + try: + count_before = asyncio.run(cw_llen(config)) + except Exception as exc: + event.fail(f"Failed to read list length from Valkey: {exc}") + return + + wait = float(event.params.get("wait", 10.0)) + time.sleep(wait) + + try: + count_after = asyncio.run(cw_llen(config)) + except Exception as exc: + event.fail(f"Failed to read list length from Valkey after wait: {exc}") + return + + if count_after <= count_before: + event.fail( + f"Writes are not increasing: list length was {count_before} before and" + f" {count_after} after {wait}s." + ) + return + + event.set_results( + { + "ok": True, + "count-before": count_before, + "count-after": count_after, + } + ) + def _on_resource_created(self, event: ResourceCreatedEvent[ResourceProviderModel]) -> None: """Handle resource created event.""" logger.info("Resource created") diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py index 74c4f78..eec4448 100644 --- a/tests/integration/clients/requirer-charm/src/continuous_writes.py +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -158,7 +158,7 @@ async def _make_client(config: DaemonConfig) -> GlideClient: @asynccontextmanager -async def _client(config: DaemonConfig): +async def glide_client(config: DaemonConfig): """Async context manager that creates and closes a GlideClient.""" client = await _make_client(config) try: @@ -169,7 +169,7 @@ async def _client(config: DaemonConfig): async def clear(config: DaemonConfig) -> None: """Delete the continuous-writes list key from Valkey.""" - async with _client(config) as client: + async with glide_client(config) as client: await client.delete([KEY]) logger.info("Cleared existing values for key '%s'.", KEY) @@ -193,7 +193,7 @@ async def _initial_count(config: DaemonConfig) -> tuple[int, int]: count = 0 try: - async with _client(config) as client: + async with glide_client(config) as client: count = await client.llen(KEY) except Exception: pass @@ -243,7 +243,7 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: while not stop.is_set(): try: - async with _client(config) as client: + async with glide_client(config) as client: new_len = await client.lpush(KEY, [str(counter)]) if not new_len: raise RuntimeError("LPUSH returned 0/None") diff --git a/tests/integration/clients/requirer-charm/src/cw_helpers.py b/tests/integration/clients/requirer-charm/src/cw_helpers.py new file mode 100644 index 0000000..6557e70 --- /dev/null +++ b/tests/integration/clients/requirer-charm/src/cw_helpers.py @@ -0,0 +1,66 @@ +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. + +"""Helpers for the continuous-writes daemon used by the requirer charm.""" + +import enum +import logging +import os +import signal +import time +from pathlib import Path + +from continuous_writes import KEY as CW_KEY +from continuous_writes import DaemonConfig, glide_client as cw_client + +logger = logging.getLogger(__name__) + + +class CWPath(enum.Enum): + """Paths used by the continuous-writes daemon.""" + + CONFIG = Path("/tmp/cw_config.json") + STATE = Path("/tmp/cw_state.json") + PID = Path("/tmp/cw_daemon.pid") + LOG = Path("/tmp/cw_daemon.log") + CERT = Path("/tmp/cw_client.pem") + KEY = Path("/tmp/cw_client.key") + CA = Path("/tmp/cw_client_ca.pem") + + +def wait_for_pid_exit( + pid: int, poll_interval: int = 1, max_attempts: int = 10, force_kill: bool = True +) -> bool: + """Wait for a process to exit. + + Returns True if the process exited cleanly within max_attempts, False otherwise. + If force_kill is True and the process is still running after max_attempts, sends SIGKILL. + """ + for attempt in range(max_attempts): + time.sleep(poll_interval) + try: + os.kill(pid, 0) # signal 0 checks existence without sending a signal + except ProcessLookupError: + logger.info("Daemon PID %d exited after %d second(s).", pid, attempt * poll_interval) + return True + except OSError: + pass # EPERM — process exists but unowned; treat as still running + + logger.warning( + "Daemon PID %d did not exit after %d second(s).", + pid, + max_attempts * poll_interval, + ) + if force_kill: + logger.warning("Sending SIGKILL to daemon PID %d.", pid) + try: + os.kill(pid, signal.SIGKILL) + except OSError: + pass + return False + + +async def cw_llen(config: DaemonConfig) -> int: + """Return the current length of the continuous-writes list in Valkey.""" + async with cw_client(config) as client: + return await client.llen(CW_KEY) From 4db9c6bb8e614744891d97ac002ae9f9ac2731d1 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 13 Apr 2026 14:00:24 +0000 Subject: [PATCH 235/282] change assertion to action --- tests/integration/cw_helpers.py | 53 +++++++++++------------- tests/integration/ha/test_network_cut.py | 14 +------ tests/integration/ha/test_scaling.py | 30 +++----------- 3 files changed, 31 insertions(+), 66 deletions(-) diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index 61c41ec..c35fc20 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -2,7 +2,6 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. -import asyncio import base64 import json import logging @@ -18,7 +17,6 @@ TLS_CERT_FILE, TLS_KEY_FILE, CharmUsers, - create_valkey_client, download_client_certificate_from_unit, exec_valkey_cli, get_cluster_addresses, @@ -145,6 +143,30 @@ def stop_continuous_writes( return stats +def assert_continuous_writes_increasing( + juju: jubilant.Juju, + unit: str = f"{CW_RUNNER_NAME}/0", + wait: float = 10.0, +) -> None: + """Run the assert-continuous-writes-increasing action on the requirer charm unit. + + Args: + juju: Juju client instance. + unit: Unit name to run the action on. + wait: Seconds to wait between state samples inside the charm. + """ + result = juju.run(unit, "assert-continuous-writes-increasing", {"wait": wait}) + assert result.status == "completed" and result.results.get("ok"), ( + f"assert-continuous-writes-increasing failed: {result}" + ) + logger.info( + "Continuous writes are increasing on %s (count %s -> %s)", + unit, + result.results.get("count-before"), + result.results.get("count-after"), + ) + + def clear_continuous_writes(juju: jubilant.Juju, unit: str) -> None: """Trigger the clear-continuous-writes action on the requirer charm unit. @@ -160,33 +182,6 @@ def clear_continuous_writes(juju: jubilant.Juju, unit: str) -> None: logger.info("Continuous-writes data cleared on %s", unit) -async def assert_continuous_writes_increasing( - hostnames: list[str], - username: str, - password: str, - tls_enabled: bool = False, -) -> None: - """Assert that the continuous writes are increasing. - - Args: - hostnames: List of Valkey hostnames to connect to. - username: Valkey username. - password: Valkey password. - tls_enabled: Whether TLS is enabled. - """ - async with create_valkey_client( - hostnames, - username=username, - password=password, - tls_enabled=tls_enabled, - ) as client: - writes_count = await client.llen(KEY) - await asyncio.sleep(10) - more_writes = await client.llen(KEY) - assert more_writes > writes_count, "Writes not continuing to DB" - logger.info("Continuous writes are increasing.") - - def assert_continuous_writes_consistent( hostnames: list[str], username: str, diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 581e3da..1a7262e 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -195,12 +195,7 @@ async def test_network_cut_primary( # noqa: C901 f"The old primary endpoint should be marked as down in sentinels list of hostname {address} after network cut." ) - await assert_continuous_writes_increasing( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=tls_enabled, - ) + assert_continuous_writes_increasing(juju) # restore network to the original primary unit logger.info("Restoring network to original primary unit at %s", primary_hostname) @@ -290,9 +285,4 @@ async def test_network_cut_primary( # noqa: C901 f"The old primary endpoint should be present in sentinels list of hostname {address} after network cut and no IP change." ) - await assert_continuous_writes_increasing( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=tls_enabled, - ) + assert_continuous_writes_increasing(juju) diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index eef361d..8c068a3 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -108,11 +108,7 @@ async def test_scale_up(juju: jubilant.Juju, c_writes) -> None: f"Expected {init_units_count + 1} connected replicas, got {connected_replicas}." ) - await assert_continuous_writes_increasing( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - ) + assert_continuous_writes_increasing(juju) logger.info("Stopping continuous writes after scale up test.") cw_stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( @@ -180,11 +176,7 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ # update hostnames after scale down configure_cw_runner(juju, valkey_app=app_name) - await assert_continuous_writes_increasing( - hostnames=get_cluster_addresses(juju, app_name), - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - ) + assert_continuous_writes_increasing(juju) logger.info("Stopping continuous writes after scale down test.") cw_stats = stop_continuous_writes(juju) @@ -255,11 +247,7 @@ async def test_scale_down_multiple_units( configure_cw_runner(juju, valkey_app=app_name) # update hostnames after scale down - await assert_continuous_writes_increasing( - hostnames=get_cluster_addresses(juju, app_name), - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - ) + assert_continuous_writes_increasing(juju) logger.info("Stopping continuous writes after scale down test.") cw_stats = stop_continuous_writes(juju) @@ -308,11 +296,7 @@ async def test_scale_down_to_zero_and_back_up( start_continuous_writes(juju, clear=True) await asyncio.sleep(10) # let the continuous writes write some data - await assert_continuous_writes_increasing( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - ) + assert_continuous_writes_increasing(juju) logger.info("Stopping continuous writes after scale up test.") cw_stats = stop_continuous_writes(juju) @@ -371,11 +355,7 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_w ) logger.info(f"New primary endpoint after scale down is {new_primary_endpoint}.") hostnames = get_cluster_addresses(juju, app_name) - await assert_continuous_writes_increasing( - hostnames=hostnames, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - ) + assert_continuous_writes_increasing(juju) cw_stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( hostnames=hostnames, From 58f3f3c0de2ddf031995eed7d081acf33877d456 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 13 Apr 2026 14:01:15 +0000 Subject: [PATCH 236/282] add reraise --- tests/integration/ha/helpers/helpers.py | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index b6418b1..4c53147 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -266,7 +266,7 @@ def is_unit_reachable_k8s(namespace: str, source_pod_name: str, to_host: str) -> # Poll the pod status until it completes phase = None - for attempt in Retrying(stop=stop_after_attempt(30), wait=wait_fixed(2)): + for attempt in Retrying(stop=stop_after_attempt(30), wait=wait_fixed(2), reraise=True): with attempt: pod_status = v1.read_namespaced_pod(name=temp_pod_name, namespace=namespace) phase = pod_status.status.phase @@ -309,7 +309,9 @@ def is_unit_reachable_k8s(namespace: str, source_pod_name: str, to_host: str) -> def is_unit_reachable_lxd(from_host: str, to_host: str, number_of_retries: int = 10) -> bool: """Test network reachability between LXD hosts.""" try: - for attempt in Retrying(stop=stop_after_attempt(number_of_retries), wait=wait_fixed(10)): + for attempt in Retrying( + stop=stop_after_attempt(number_of_retries), wait=wait_fixed(10), reraise=True + ): with attempt: ping = subprocess.call( f"lxc exec {from_host} -- ping -c 5 -W 2 {to_host}".split(), @@ -450,7 +452,7 @@ def instance_ip(model: str, instance: str) -> str: return "" -@retry(stop=stop_after_attempt(60), wait=wait_fixed(15)) +@retry(stop=stop_after_attempt(60), wait=wait_fixed(15), reraise=True) def wait_network_restore( juju: jubilant.Juju, substrate: Substrate, From afa1b17139ed1ae9c6076ebb012e59da5251e8fa Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 13 Apr 2026 14:13:25 +0000 Subject: [PATCH 237/282] stop cw at end of test --- tests/integration/cw_helpers.py | 2 +- tests/integration/ha/test_network_cut.py | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index c35fc20..08b5f63 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -106,7 +106,7 @@ def start_continuous_writes( result = juju.run( unit, "start-continuous-writes", - {"sleep-interval": sleep_interval, "clear-existing": clear}, + params={"sleep-interval": sleep_interval, "clear-existing": clear}, ) assert result.results.get("ok"), f"start-continuous-writes failed: {result}" pid = int(result.results["pid"]) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 1a7262e..0aa97a1 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -12,6 +12,7 @@ assert_continuous_writes_increasing, configure_cw_runner, start_continuous_writes, + stop_continuous_writes, ) from tests.integration.ha.helpers.helpers import ( cut_network_from_unit, @@ -286,3 +287,4 @@ async def test_network_cut_primary( # noqa: C901 ) assert_continuous_writes_increasing(juju) + stop_continuous_writes(juju) From bfe667c8ae0dbd7039803ebe77649fcaf286303e Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 13 Apr 2026 14:28:41 +0000 Subject: [PATCH 238/282] remove reraise from unit reachable lxd --- tests/integration/ha/helpers/helpers.py | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index 4c53147..9dbe148 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -309,9 +309,7 @@ def is_unit_reachable_k8s(namespace: str, source_pod_name: str, to_host: str) -> def is_unit_reachable_lxd(from_host: str, to_host: str, number_of_retries: int = 10) -> bool: """Test network reachability between LXD hosts.""" try: - for attempt in Retrying( - stop=stop_after_attempt(number_of_retries), wait=wait_fixed(10), reraise=True - ): + for attempt in Retrying(stop=stop_after_attempt(number_of_retries), wait=wait_fixed(10)): with attempt: ping = subprocess.call( f"lxc exec {from_host} -- ping -c 5 -W 2 {to_host}".split(), From c0b968e4b2c6ba09033d80e89e2ec5aac548351d Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 13 Apr 2026 14:33:40 +0000 Subject: [PATCH 239/282] update 0 to leader --- tests/integration/cw_helpers.py | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index 08b5f63..4be6775 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -78,7 +78,7 @@ def configure_cw_runner( def start_continuous_writes( juju: jubilant.Juju, - unit: str = f"{CW_RUNNER_NAME}/0", + unit: str = f"{CW_RUNNER_NAME}/leader", sleep_interval: float = 1.0, config: dict | None = None, clear: bool = True, @@ -115,7 +115,7 @@ def start_continuous_writes( def stop_continuous_writes( - juju: jubilant.Juju, unit: str = f"{CW_RUNNER_NAME}/0" + juju: jubilant.Juju, unit: str = f"{CW_RUNNER_NAME}/leader" ) -> ContinuousWritesStats: """Trigger the stop-continuous-writes action and return write statistics. @@ -145,7 +145,7 @@ def stop_continuous_writes( def assert_continuous_writes_increasing( juju: jubilant.Juju, - unit: str = f"{CW_RUNNER_NAME}/0", + unit: str = f"{CW_RUNNER_NAME}/leader", wait: float = 10.0, ) -> None: """Run the assert-continuous-writes-increasing action on the requirer charm unit. From 0c9263b73d619912742ef4f6f963683b6fd50946 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 13 Apr 2026 16:22:40 +0000 Subject: [PATCH 240/282] rename cw runner to glide runner --- tests/integration/conftest.py | 14 ++++++++------ tests/integration/cw_helpers.py | 10 +++++----- tests/integration/ha/test_network_cut.py | 2 +- tests/integration/ha/test_scaling.py | 12 +++++++----- 4 files changed, 21 insertions(+), 17 deletions(-) diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py index 0952981..e041f5c 100644 --- a/tests/integration/conftest.py +++ b/tests/integration/conftest.py @@ -12,11 +12,11 @@ logger = logging.getLogger(__name__) -CW_RUNNER_NAME = "cw-runner" +GLIDE_RUNNER_NAME = "glide-runner" @pytest.fixture -def cw_runner_charm(arch: str) -> str: +def glide_runner_charm(arch: str) -> str: """Path to the charm file to use for testing.""" # Return str instead of pathlib.Path since python-libjuju's model.deploy(), juju deploy, and # juju bundle files expect local charms to begin with `./` or `/` to distinguish them from @@ -25,12 +25,14 @@ def cw_runner_charm(arch: str) -> str: @pytest.fixture(scope="function") -def c_writes(juju: jubilant.Juju, cw_runner_charm: str) -> None: +def glide_runner(juju: jubilant.Juju, glide_runner_charm: str) -> None: """Deploy continous writes runner charm if not already deployed.""" - if CW_RUNNER_NAME not in juju.status().apps: - juju.deploy(cw_runner_charm, app=CW_RUNNER_NAME) + if GLIDE_RUNNER_NAME not in juju.status().apps: + juju.deploy(glide_runner_charm, app=GLIDE_RUNNER_NAME) juju.wait( - lambda status: are_apps_active_and_agents_idle(status, CW_RUNNER_NAME, idle_period=30), + lambda status: are_apps_active_and_agents_idle( + status, GLIDE_RUNNER_NAME, idle_period=30 + ), timeout=600, delay=5, successes=3, diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index 4be6775..19c0c9d 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -10,7 +10,7 @@ import jubilant -from tests.integration.conftest import CW_RUNNER_NAME +from tests.integration.conftest import GLIDE_RUNNER_NAME from tests.integration.helpers import ( APP_NAME, TLS_CA_FILE, @@ -36,7 +36,7 @@ class ContinuousWritesStats(NamedTuple): def configure_cw_runner( juju: jubilant.Juju, - app: str = CW_RUNNER_NAME, + app: str = GLIDE_RUNNER_NAME, valkey_app: str = APP_NAME, tls_enabled: bool = False, ) -> None: @@ -78,7 +78,7 @@ def configure_cw_runner( def start_continuous_writes( juju: jubilant.Juju, - unit: str = f"{CW_RUNNER_NAME}/leader", + unit: str = f"{GLIDE_RUNNER_NAME}/leader", sleep_interval: float = 1.0, config: dict | None = None, clear: bool = True, @@ -115,7 +115,7 @@ def start_continuous_writes( def stop_continuous_writes( - juju: jubilant.Juju, unit: str = f"{CW_RUNNER_NAME}/leader" + juju: jubilant.Juju, unit: str = f"{GLIDE_RUNNER_NAME}/leader" ) -> ContinuousWritesStats: """Trigger the stop-continuous-writes action and return write statistics. @@ -145,7 +145,7 @@ def stop_continuous_writes( def assert_continuous_writes_increasing( juju: jubilant.Juju, - unit: str = f"{CW_RUNNER_NAME}/leader", + unit: str = f"{GLIDE_RUNNER_NAME}/leader", wait: float = 10.0, ) -> None: """Run the assert-continuous-writes-increasing action on the requirer charm unit. diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 0aa97a1..9d8b0aa 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -79,7 +79,7 @@ async def test_network_cut_primary( # noqa: C901 juju: jubilant.Juju, substrate: Substrate, chaos_mesh, - c_writes, + glide_runner, ) -> None: """Cut the network to the primary unit and verify that a new primary is elected.""" if ip_change and substrate == Substrate.K8S: diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index 8c068a3..4fa654a 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -71,7 +71,7 @@ async def test_check_quorum(juju: jubilant.Juju) -> None: ) -async def test_scale_up(juju: jubilant.Juju, c_writes) -> None: +async def test_scale_up(juju: jubilant.Juju, glide_runner) -> None: """Make sure new units are added to the valkey downtime.""" app_name = existing_app(juju) or APP_NAME init_units_count = len(juju.status().apps[app_name].units) @@ -119,7 +119,9 @@ async def test_scale_up(juju: jubilant.Juju, c_writes) -> None: ) -async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_writes) -> None: +async def test_scale_down_one_unit( + juju: jubilant.Juju, substrate: Substrate, glide_runner +) -> None: """Make sure scale down operations complete successfully.""" app_name = existing_app(juju) or APP_NAME init_units_count = len(juju.status().apps[app_name].units) @@ -189,7 +191,7 @@ async def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, c_ async def test_scale_down_multiple_units( - juju: jubilant.Juju, substrate: Substrate, c_writes + juju: jubilant.Juju, substrate: Substrate, glide_runner ) -> None: """Make sure multiple scale down operations complete successfully.""" app_name = existing_app(juju) or APP_NAME @@ -261,7 +263,7 @@ async def test_scale_down_multiple_units( async def test_scale_down_to_zero_and_back_up( - juju: jubilant.Juju, substrate: Substrate, c_writes + juju: jubilant.Juju, substrate: Substrate, glide_runner ) -> None: """Make sure that removing all units and then adding them again works.""" app_name = existing_app(juju) or APP_NAME @@ -309,7 +311,7 @@ async def test_scale_down_to_zero_and_back_up( ) -async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, c_writes) -> None: +async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, glide_runner) -> None: """Make sure that removing the primary unit triggers a new primary to be elected and the cluster remains available.""" if substrate == Substrate.K8S: pytest.skip("Primary unit can only targeted on VM") From 698c0d4c60fe18845244a65be84fb59e0e1afb00 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 13 Apr 2026 16:57:05 +0000 Subject: [PATCH 241/282] add execute action --- .../clients/requirer-charm/charmcraft.yaml | 7 +++ .../clients/requirer-charm/src/charm.py | 41 +++++++++++++++-- .../clients/requirer-charm/src/client.py | 44 +++++++++++++++---- 3 files changed, 80 insertions(+), 12 deletions(-) diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index 61e8071..de888a6 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -102,6 +102,13 @@ actions: description: The username to use type: string + execute: + description: Execute an arbitrary Valkey command through the Glide client + params: + command: + description: The Valkey command to execute (e.g. "PING", "SET key value", "GET key") + type: string + get-credentials: description: Action for fetching all available credentials from relations. diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index fd85379..0b4f320 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -92,6 +92,7 @@ def __init__(self, framework: ops.Framework): framework.observe(self.on.start, self._on_start) framework.observe(self.on.set_action, self._on_set_action) framework.observe(self.on.get_action, self._on_get_action) + framework.observe(self.on.execute_action, self._on_execute_action) framework.observe(self.on.get_credentials_action, self._on_get_credentials_action) framework.observe( self.on.start_continuous_writes_action, self._on_start_continuous_writes_action @@ -139,10 +140,10 @@ def _use_config(self) -> bool: return self.config.get("connection-source") == "config" @property - def credentials(self) -> dict[str | None, str | None]: + def credentials(self) -> dict[str, str | None]: """Retrieve the client credentials from config or relation.""" if self._use_config: - username = str(self.config["username"]) or None + username = str(self.config["username"]) or "" password = str(self.config["password"]) or None return {username: password} @@ -252,11 +253,18 @@ def private_key(self) -> str | None: def get_valkey_client(self, user: str) -> ValkeyClient: """Get a valkey client.""" + if not self.primary_endpoint: + raise ValueError("No endpoint available.") + if not self.credentials: + raise ValueError("No credentials available.") + if self.tls_enabled and ( + not self.certificate or not self.private_key or not self.tls_ca_cert + ): + raise ValueError("TLS is enabled but certificates are not yet available.") return ValkeyClient( username=user, password=self.credentials.get(user), - host=self.primary_endpoint.split(":")[0], - port=int(self.primary_endpoint.split(":")[1]), + endpoints=self.primary_endpoint.split(","), tls_cert=self.certificate.encode() if self.tls_enabled else None, tls_key=self.private_key.encode() if self.tls_enabled else None, tls_ca_cert=self.tls_ca_cert.encode() if self.tls_enabled else None, @@ -316,6 +324,31 @@ def _on_get_action(self, event: ops.ActionEvent) -> None: event.fail(f"Failed to read data: {e}") logger.error("Failed to read data: %s", e) + def _on_execute_action(self, event: ops.ActionEvent) -> None: + """Handle execute action.""" + if not self._use_config and not self.valkey_relation: + event.fail( + "The action can be run only after a relation is created or connection-source is set to 'config'." + ) + event.set_results({"ok": False}) + return + + command = str(event.params.get("command", "")) + if not command: + event.fail("Parameter command is required.") + event.set_results({"ok": False}) + return + + user, _ = next(iter(self.credentials.items())) + args = command.split() + client = self.get_valkey_client(user) + try: + result = asyncio.run(client.execute_command(args)) + event.set_results({"ok": True, "result": result}) + except Exception as e: + event.fail(f"Failed to execute command: {e}") + logger.error("Failed to execute command: %s", e) + def _on_get_credentials_action(self, event: ops.ActionEvent) -> None: """Return the credentials an action response.""" if not self.valkey_relation: diff --git a/tests/integration/clients/requirer-charm/src/client.py b/tests/integration/clients/requirer-charm/src/client.py index cd3105c..155f015 100644 --- a/tests/integration/clients/requirer-charm/src/client.py +++ b/tests/integration/clients/requirer-charm/src/client.py @@ -3,6 +3,7 @@ """ValkeyClient utility class to connect to valkey servers.""" +import json import logging from glide import ( @@ -23,15 +24,13 @@ class ValkeyClient: def __init__( self, username: str, - password: str, - host: str, - port: int, + password: str | None, + endpoints: list[str], tls_cert: bytes | None, tls_key: bytes | None, tls_ca_cert: bytes | None, ): - self.host = host - self.port = port + self.endpoints = endpoints self.user = username self.password = password self.tls_cert = tls_cert @@ -40,7 +39,11 @@ def __init__( async def create_client(self) -> GlideClient: """Initialize the Valkey client.""" - credentials = ServerCredentials(username=self.user, password=self.password) + addresses = [ + NodeAddress(host, int(port_str)) + for endpoint in self.endpoints + for host, port_str in [endpoint.rsplit(":", 1)] + ] tls_config = TlsAdvancedConfiguration( client_cert_pem=self.tls_cert if self.tls_cert else None, @@ -49,9 +52,9 @@ async def create_client(self) -> GlideClient: ) client_config = GlideClientConfiguration( - [NodeAddress(host=self.host, port=self.port)], + addresses, use_tls=True if self.tls_cert else False, - credentials=credentials, + credentials=ServerCredentials(username=self.user, password=self.password), request_timeout=1000, # in milliseconds advanced_config=AdvancedGlideClientConfiguration(tls_config=tls_config), ) @@ -77,3 +80,28 @@ async def get_key(self, key: str) -> str: return value.decode() finally: await client.close() + + async def execute_command(self, args: list[str]) -> str: + """Execute an arbitrary Valkey command and return the result as a string.""" + client = await self.create_client() + + try: + result = await client.custom_command(args) + str_result = "" + if result is None: + str_result = "" + elif isinstance(result, bytes): + str_result = result.decode() + elif isinstance(result, list): + # Decode bytes in lists (e.g. from LRANGE) to return a JSON-serializable structure + str_result = [ + item.decode() if isinstance(item, bytes) else item for item in result + ] + else: + str_result = str(result) # Fallback to string conversion for other types + + return json.dumps( + str_result + ) # For other result types, return a JSON string representation + finally: + await client.close() From 573906589834bc5119f96062f0d3a19d80a5b714 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 13 Apr 2026 20:49:49 +0000 Subject: [PATCH 242/282] merge network and add restart test --- tests/integration/ha/helpers/helpers.py | 7 +- tests/integration/ha/test_failover.py | 142 +++++++++++++++--------- 2 files changed, 95 insertions(+), 54 deletions(-) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index 691e3b3..e7e8364 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -473,17 +473,20 @@ def send_process_control_signal( # For k8s, we exec into the pod and send the signal to the process command = f"JUJU_MODEL={model_full_name} juju ssh --container valkey {unit_name} pkill --signal {signal} {db_process}" else: - command = f"JUJU_MODEL={model_full_name} juju ssh {unit_name} sudo -i 'pkill --signal {signal} -f {db_process}'" + command = f"JUJU_MODEL={model_full_name} juju ssh {unit_name} -- sudo -i 'pkill --signal {signal} {db_process}'" try: subprocess.check_output( command, stderr=subprocess.PIPE, shell=True, universal_newlines=True, timeout=3 ) - except (subprocess.CalledProcessError, subprocess.TimeoutExpired): + except (subprocess.CalledProcessError, subprocess.TimeoutExpired) as e: logger.error( "failed to send signal %s to process %s on unit %s", signal, db_process, unit_name ) + logger.error("Error details: %s", e) + raise logger.info(f"Signal {signal} sent to database process on unit {unit_name}.") + time.sleep(3) # give some time for the signal to take effect before the test continues def lxd_patch_restart_delay(juju: jubilant.Juju, unit_name: str, delay: int | None = None) -> None: diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index 645f43c..186d66e 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -35,7 +35,7 @@ download_client_certificate_from_unit, exec_valkey_cli, existing_app, - get_cluster_hostnames, + get_cluster_addresses, get_ip_from_unit, get_number_connected_replicas, get_password, @@ -49,8 +49,7 @@ FAILOVER_DELAY = 45 TEST_KEY = "test_key" TEST_VALUE = "42" -VM_PROCESS_PATTERN = "/usr/bin/valkey-server" -K8S_PROCESS_PATTERN = "valkey-server" +PROCESS_PATTERN = "valkey-server" @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) @@ -84,8 +83,12 @@ def test_build_and_deploy( @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) -async def test_kill_db_process_on_primary( +@pytest.mark.parametrize("signal", ["SIGKILL", "SIGTERM"], ids=["sigkill", "sigterm"]) +@pytest.mark.parametrize("patched_delay", [False, True], ids=["default_delay", "patched_delay"]) +async def test_signal_db_process_on_primary( tls_enabled: bool, + signal: str, + patched_delay: bool, juju: jubilant.Juju, substrate: Substrate, c_writes: ContinuousWrites, @@ -118,17 +121,23 @@ async def test_kill_db_process_on_primary( logger.info("Axing away primary unit at %s", primary_ip) primary_unit_name = get_unit_name_from_primary_ip(juju, primary_ip, substrate) - db_process_name = K8S_PROCESS_PATTERN if substrate == Substrate.K8S else VM_PROCESS_PATTERN + if patched_delay: + logger.info("Patching restart delay to %s seconds.", RESTART_DELAY_PATCHED) + patch_restart_delay( + juju=juju, + unit_name=primary_unit_name, + delay=RESTART_DELAY_PATCHED, + substrate=substrate, + ) # axe away the database process of the primary send_process_control_signal( unit_name=primary_unit_name, model_full_name=juju.model, - signal="SIGKILL", - db_process=db_process_name, + signal=signal, + db_process=PROCESS_PATTERN, substrate=substrate, ) - # We have 20s before systemd restarts the process # make sure the process is stopped admin_password = get_password(juju, CharmUsers.VALKEY_ADMIN) if substrate == Substrate.VM: @@ -136,13 +145,20 @@ async def test_kill_db_process_on_primary( logger.info("Pinging primary unit to ensure it's down.") assert not ping( primary_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled - ), "Primary unit is still responding after SIGKILL." + ), f"Primary unit is still responding after {signal}." # ensure the stopped unit was restarted - logger.info("Waiting for primary unit to restart.") - await asyncio.sleep( + restart_delay = ( VM_RESTART_DELAY_DEFAULT if substrate == Substrate.VM else K8S_RESTART_DELAY_DEFAULT ) + if patched_delay: + restart_delay = RESTART_DELAY_PATCHED + + restart_delay += 10 # add some buffer to the restart delay + logger.info("Waiting for primary unit to restart. Restart delay is %s seconds.", restart_delay) + await asyncio.sleep(restart_delay) + + logger.info("Pinging primary unit to ensure it's up.") for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(5), reraise=True): with attempt: assert ping( @@ -150,19 +166,45 @@ async def test_kill_db_process_on_primary( ), "Primary unit is not responding after restart delay." logger.info("Primary unit is available again.") + # SIGKILL without patching we have 20s before systemd restarts the process not enough for failover + # SIGTERM just restarts the process so failover should not happen + addresses = get_cluster_addresses(juju, app_name) + if patched_delay: + # failover should have happened during the downtime of the primary since the restart delay is longer than the failover delay + new_primary_ip = get_primary_ip( + juju, + app_name, + tls_enabled=tls_enabled, + addresses=[ip for ip in addresses if ip != primary_ip], + ) + assert new_primary_ip != primary_ip, "Primary IP did not change after failover delay." + logger.info( + "Failover successful, new primary is at %s vs old at %s", new_primary_ip, primary_ip + ) + + # reset the restart delay to the original value + patch_restart_delay( + juju, + unit_name=primary_unit_name, + delay=None, + substrate=substrate, + ) + logger.info("Checking number of connected replicas after primary restart.") - hostnames = get_cluster_hostnames(juju, app_name) - number_of_replicas = await get_number_connected_replicas( - hostnames, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled - ) - assert number_of_replicas == init_units_count - 1, ( - f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" - ) + # if failover happened the old primary will need some time to restart and sync with the new primary before it shows up as a connected replica + for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10), reraise=True): + with attempt: + number_of_replicas = await get_number_connected_replicas( + addresses, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled + ) + assert number_of_replicas == init_units_count - 1, ( + f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" + ) # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") await assert_continuous_writes_increasing( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, tls_enabled=tls_enabled, @@ -171,7 +213,7 @@ async def test_kill_db_process_on_primary( await c_writes.async_stop() assert_continuous_writes_consistent( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, ) @@ -183,7 +225,7 @@ async def test_freeze_db_process_on_primary( ) -> None: """Make sure the cluster can self-heal when the leader goes down.""" app_name = existing_app(juju) or APP_NAME - hostnames = get_cluster_hostnames(juju, app_name) + addresses = get_cluster_addresses(juju, app_name) if tls_enabled: download_client_certificate_from_unit(juju, APP_NAME) c_writes.tls_enabled = tls_enabled @@ -209,14 +251,12 @@ async def test_freeze_db_process_on_primary( logger.info("Axing away primary unit at %s", primary_ip) primary_unit_name = get_unit_name_from_primary_ip(juju, primary_ip, substrate) - db_process_name = K8S_PROCESS_PATTERN if substrate == Substrate.K8S else VM_PROCESS_PATTERN - # axe away the database process of the primary send_process_control_signal( unit_name=primary_unit_name, model_full_name=juju.model, signal="SIGSTOP", - db_process=db_process_name, + db_process=PROCESS_PATTERN, substrate=substrate, ) # make sure the process is stopped @@ -239,14 +279,14 @@ async def test_freeze_db_process_on_primary( new_primary_endpoint = new_primary_ip if substrate == Substrate.VM else new_primary_hostname number_of_replicas = await get_number_connected_replicas( - hostnames, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled + addresses, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled ) assert number_of_replicas == init_units_count - 2, ( f"Expected {init_units_count - 2} replicas to be connected, got {number_of_replicas}" ) await assert_continuous_writes_increasing( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, tls_enabled=tls_enabled, @@ -256,7 +296,7 @@ async def test_freeze_db_process_on_primary( unit_name=primary_unit_name, model_full_name=juju.model, signal="SIGCONT", - db_process=db_process_name, + db_process=PROCESS_PATTERN, substrate=substrate, ) @@ -285,16 +325,16 @@ async def test_freeze_db_process_on_primary( logger.info("Checking number of connected replicas after primary restart.") number_of_replicas = await get_number_connected_replicas( - hostnames, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled + addresses, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled ) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" ) - for hostname in hostnames: + for ip_address in addresses: # Make sure all sentinels are connected to new primary master_addr = exec_valkey_cli( - hostname=hostname, + hostname=ip_address, username=CharmUsers.SENTINEL_CHARM_ADMIN, password=get_password(juju, CharmUsers.SENTINEL_CHARM_ADMIN), command="sentinel get-master-addr-by-name primary", @@ -303,13 +343,13 @@ async def test_freeze_db_process_on_primary( json=True, ).stdout assert json.loads(master_addr)[0] == new_primary_endpoint, ( - f"Sentinel at {hostname} is not connected to the new primary." + f"Sentinel at {ip_address} is not connected to the new primary." ) # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") await assert_continuous_writes_increasing( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, tls_enabled=tls_enabled, @@ -318,7 +358,7 @@ async def test_freeze_db_process_on_primary( await c_writes.async_stop() assert_continuous_writes_consistent( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, ) @@ -358,13 +398,12 @@ async def test_full_cluster_restart( substrate=substrate, ) - db_process_name = K8S_PROCESS_PATTERN if substrate == Substrate.K8S else VM_PROCESS_PATTERN for unit in juju.status().get_units(app_name): send_process_control_signal( unit_name=unit, model_full_name=juju.model, signal="SIGTERM", - db_process=db_process_name, + db_process=PROCESS_PATTERN, substrate=substrate, ) @@ -391,9 +430,9 @@ async def test_full_cluster_restart( logger.info("All units are available again.") logger.info("Checking number of connected replicas after primary restart.") - hostnames = get_cluster_hostnames(juju, app_name) + addresses = get_cluster_addresses(juju, app_name) number_of_replicas = await get_number_connected_replicas( - hostnames, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled + addresses, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled ) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" @@ -402,7 +441,7 @@ async def test_full_cluster_restart( # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") await assert_continuous_writes_increasing( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, tls_enabled=tls_enabled, @@ -411,7 +450,7 @@ async def test_full_cluster_restart( await c_writes.async_stop() assert_continuous_writes_consistent( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, ) @@ -460,13 +499,12 @@ async def test_full_cluster_crash( substrate=substrate, ) - db_process_name = K8S_PROCESS_PATTERN if substrate == Substrate.K8S else VM_PROCESS_PATTERN for unit in juju.status().get_units(app_name): send_process_control_signal( unit_name=unit, model_full_name=juju.model, signal="SIGKILL", - db_process=db_process_name, + db_process=PROCESS_PATTERN, substrate=substrate, ) @@ -493,9 +531,9 @@ async def test_full_cluster_crash( logger.info("All units are available again.") logger.info("Checking number of connected replicas after primary restart.") - hostnames = get_cluster_hostnames(juju, app_name) + addresses = get_cluster_addresses(juju, app_name) number_of_replicas = await get_number_connected_replicas( - hostnames, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled + addresses, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled ) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" @@ -504,7 +542,7 @@ async def test_full_cluster_crash( # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") await assert_continuous_writes_increasing( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, tls_enabled=tls_enabled, @@ -513,7 +551,7 @@ async def test_full_cluster_crash( await c_writes.async_stop() assert_continuous_writes_consistent( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, ) @@ -590,7 +628,7 @@ async def test_reboot_primary( ) number_of_replicas = await get_number_connected_replicas( - get_cluster_hostnames(juju, app_name), + get_cluster_addresses(juju, app_name), CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled, @@ -600,7 +638,7 @@ async def test_reboot_primary( ) await assert_continuous_writes_increasing( - hostnames=get_cluster_hostnames(juju, app_name), + hostnames=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN, password=admin_password, tls_enabled=tls_enabled, @@ -609,7 +647,7 @@ async def test_reboot_primary( await c_writes.async_stop() assert_continuous_writes_consistent( - hostnames=get_cluster_hostnames(juju, app_name), + hostnames=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN, password=admin_password, ) @@ -675,9 +713,9 @@ async def test_full_cluster_reboot( logger.info("All units are available again.") logger.info("Checking number of connected replicas after primary restart.") - hostnames = get_cluster_hostnames(juju, app_name) + addresses = get_cluster_addresses(juju, app_name) number_of_replicas = await get_number_connected_replicas( - hostnames, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled + addresses, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled ) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" @@ -686,7 +724,7 @@ async def test_full_cluster_reboot( # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") await assert_continuous_writes_increasing( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, tls_enabled=tls_enabled, @@ -695,7 +733,7 @@ async def test_full_cluster_reboot( await c_writes.async_stop() assert_continuous_writes_consistent( - hostnames=hostnames, + hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, ) From 724751227e1383b0008b823836f2c9bf4258904f Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 08:47:41 +0000 Subject: [PATCH 243/282] add tls to assert cw consistent --- tests/integration/cw_helpers.py | 10 +++++++++- tests/integration/ha/test_failover.py | 6 ++++++ 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index 0ceae88..3fbb998 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -71,6 +71,7 @@ def assert_continuous_writes_consistent( hostnames: list[str], username: str, password: str, + tls_enabled: bool = False, ) -> None: """Assert that the continuous writes are consistent.""" last_written_value = int(Path(WRITES_LAST_WRITTEN_VAL_PATH).read_text()) @@ -82,7 +83,14 @@ def assert_continuous_writes_consistent( for endpoint in hostnames: current_values: list[int] = json.loads( - exec_valkey_cli(endpoint, username, password, f"LRANGE {KEY} 0 -1", json=True).stdout + exec_valkey_cli( + endpoint, + username, + password, + f"LRANGE {KEY} 0 -1", + json=True, + tls_enabled=tls_enabled, + ).stdout ) if values is None: values = current_values diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index 186d66e..c84ecf2 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -216,6 +216,7 @@ async def test_signal_db_process_on_primary( hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, + tls_enabled=tls_enabled, ) @@ -361,6 +362,7 @@ async def test_freeze_db_process_on_primary( hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, + tls_enabled=tls_enabled, ) @@ -453,6 +455,7 @@ async def test_full_cluster_restart( hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, + tls_enabled=tls_enabled, ) # reset the restart delay to the original value @@ -554,6 +557,7 @@ async def test_full_cluster_crash( hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, + tls_enabled=tls_enabled, ) # reset the restart delay to the original value @@ -650,6 +654,7 @@ async def test_reboot_primary( hostnames=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN, password=admin_password, + tls_enabled=tls_enabled, ) @@ -736,4 +741,5 @@ async def test_full_cluster_reboot( hostnames=addresses, username=CharmUsers.VALKEY_ADMIN, password=admin_password, + tls_enabled=tls_enabled, ) From ce662bc9071ea589765548dbac96082b262be5dd Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 10:00:30 +0000 Subject: [PATCH 244/282] move getting replica number to use action from dummy charm --- .../clients/requirer-charm/src/charm.py | 3 +- tests/integration/conftest.py | 4 +-- tests/integration/ha/test_network_cut.py | 16 ++------- tests/integration/ha/test_scaling.py | 36 ++++--------------- tests/integration/helpers.py | 26 +++++--------- 5 files changed, 18 insertions(+), 67 deletions(-) diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index 0b4f320..8a1e079 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -346,8 +346,7 @@ def _on_execute_action(self, event: ops.ActionEvent) -> None: result = asyncio.run(client.execute_command(args)) event.set_results({"ok": True, "result": result}) except Exception as e: - event.fail(f"Failed to execute command: {e}") - logger.error("Failed to execute command: %s", e) + event.set_results({"ok": False, "result": json.dumps(str(e))}) def _on_get_credentials_action(self, event: ops.ActionEvent) -> None: """Return the credentials an action response.""" diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py index e041f5c..ad00706 100644 --- a/tests/integration/conftest.py +++ b/tests/integration/conftest.py @@ -8,12 +8,10 @@ import pytest from literals import Substrate -from tests.integration.helpers import are_apps_active_and_agents_idle +from tests.integration.helpers import GLIDE_RUNNER_NAME, are_apps_active_and_agents_idle logger = logging.getLogger(__name__) -GLIDE_RUNNER_NAME = "glide-runner" - @pytest.fixture def glide_runner_charm(arch: str) -> str: diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 9d8b0aa..83909fe 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -30,13 +30,11 @@ IMAGE_RESOURCE, TLS_CHANNEL, TLS_NAME, - CharmUsers, are_apps_active_and_agents_idle, download_client_certificate_from_unit, get_cluster_addresses, get_ip_from_unit, get_number_connected_replicas, - get_password, get_primary_ip, ) @@ -170,12 +168,7 @@ async def test_network_cut_primary( # noqa: C901 # retry in case cluster hasn't stabilized yet after primary cut and new primary election for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10), reraise=True): with attempt: - number_of_replicas = await get_number_connected_replicas( - addresses=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=tls_enabled, - ) + number_of_replicas = get_number_connected_replicas(juju) assert number_of_replicas == NUM_UNITS - 2, ( f"Expected {NUM_UNITS - 2} connected replicas, got {number_of_replicas}." ) @@ -255,12 +248,7 @@ async def test_network_cut_primary( # noqa: C901 # sometimes it takes some time for the old primary to be marked as replica and for sentinels to update their status, so we add a retry here for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10), reraise=True): with attempt: - number_of_replicas = await get_number_connected_replicas( - addresses=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=tls_enabled, - ) + number_of_replicas = get_number_connected_replicas(juju) assert number_of_replicas == NUM_UNITS - 1, ( f"Expected {NUM_UNITS - 1} connected replicas after network restoration, got {number_of_replicas}." ) diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index 4fa654a..9655837 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -99,11 +99,7 @@ async def test_scale_up(juju: jubilant.Juju, glide_runner) -> None: # check if all units have been added to the cluster addresses = get_cluster_addresses(juju, app_name) - connected_replicas = await get_number_connected_replicas( - addresses=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - ) + connected_replicas = get_number_connected_replicas(juju) assert connected_replicas == init_units_count + 1, ( f"Expected {init_units_count + 1} connected replicas, got {connected_replicas}." ) @@ -136,11 +132,7 @@ async def test_scale_down_one_unit( timeout=1200, ) - number_of_replicas = await get_number_connected_replicas( - addresses=get_cluster_addresses(juju, app_name), - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - ) + number_of_replicas = get_number_connected_replicas(juju) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} connected replicas, got {number_of_replicas}." ) @@ -166,11 +158,7 @@ async def test_scale_down_one_unit( f"Unexpected quorum value for unit {unit} after scale down" ) - number_of_replicas = await get_number_connected_replicas( - addresses=get_cluster_addresses(juju, app_name), - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - ) + number_of_replicas = get_number_connected_replicas(juju) assert number_of_replicas == init_units_count - 2, ( f"Expected {init_units_count - 2} connected replicas, got {number_of_replicas}." ) @@ -206,11 +194,7 @@ async def test_scale_down_multiple_units( ) init_units_count = NUM_UNITS + 1 - number_of_replicas = await get_number_connected_replicas( - addresses=get_cluster_addresses(juju, app_name), - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - ) + number_of_replicas = get_number_connected_replicas(juju) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} connected replicas, got {number_of_replicas}." ) @@ -233,11 +217,7 @@ async def test_scale_down_multiple_units( f"Expected {init_units_count - 2} units, got {num_units}." ) - number_of_replicas = await get_number_connected_replicas( - addresses=get_cluster_addresses(juju, app_name), - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - ) + number_of_replicas = get_number_connected_replicas(juju) assert number_of_replicas == init_units_count - 3, ( f"Expected {init_units_count - 3} connected replicas, got {number_of_replicas}." ) @@ -285,11 +265,7 @@ async def test_scale_down_to_zero_and_back_up( addresses = get_cluster_addresses(juju, app_name) - connected_replicas = await get_number_connected_replicas( - addresses=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - ) + connected_replicas = get_number_connected_replicas(juju) assert connected_replicas == NUM_UNITS - 1, ( f"Expected {NUM_UNITS - 1} connected replicas, got {connected_replicas}." ) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index c75bd96..8287e19 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -21,7 +21,6 @@ AdvancedGlideClientConfiguration, GlideClient, GlideClientConfiguration, - InfoSection, NodeAddress, ServerCredentials, TlsAdvancedConfiguration, @@ -45,6 +44,7 @@ METADATA = yaml.safe_load(Path("./metadata.yaml").read_text()) APP_NAME: str = METADATA["name"] +GLIDE_RUNNER_NAME = "glide-runner" IMAGE_RESOURCE = {"valkey-image": METADATA["resources"]["valkey-image"]["upstream-source"]} INTERNAL_USERS_SECRET_LABEL = ( f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" @@ -615,31 +615,21 @@ async def ping_cluster( return await client.ping() == "PONG".encode() -async def get_number_connected_replicas( - addresses: list[str], - username: str, - password: str, - tls_enabled: bool = False, +def get_number_connected_replicas( + juju: jubilant.Juju, glide_runner_unit: str = f"{GLIDE_RUNNER_NAME}/leader" ) -> int: """Get the number of connected replicas in the Valkey cluster. Args: - addresses: List of addresses of the Valkey cluster nodes. - username: The username for authentication. - password: The password for authentication. - tls_enabled: Whether TLS certificates are needed. + juju: An instance of Jubilant's Juju class on which to run Juju commands + glide_runner_unit: The unit name of the glide-runner to execute the command on Returns: The number of connected replicas. """ - async with create_valkey_client( - hostnames=addresses, - username=username, - password=password, - tls_enabled=tls_enabled, - ) as client: - info = (await client.info([InfoSection.REPLICATION])).decode() - search_result = re.search(r"connected_slaves:([\d+])", info) + task_result = juju.run(glide_runner_unit, "execute", {"command": "info replication"}) + assert task_result.status == "completed", f"Command execution failed: {task_result.results}" + search_result = re.search(r"connected_slaves:([\d+])", task_result.results.get("result", "")) if not search_result: raise ValueError("Could not parse number of connected replicas from info output") return int(search_result.group(1)) From aff79dbf6705319eb871dfce5f8ca52fb30d137b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 10:03:31 +0000 Subject: [PATCH 245/282] configure cw runner with DN for k8s --- tests/integration/cw_helpers.py | 16 ++++++++++++++-- tests/integration/ha/test_network_cut.py | 4 ++-- tests/integration/ha/test_scaling.py | 22 +++++++++++++--------- 3 files changed, 29 insertions(+), 13 deletions(-) diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index 19c0c9d..ed49b86 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -10,6 +10,7 @@ import jubilant +from literals import CLIENT_PORT, TLS_PORT, Substrate from tests.integration.conftest import GLIDE_RUNNER_NAME from tests.integration.helpers import ( APP_NAME, @@ -39,6 +40,7 @@ def configure_cw_runner( app: str = GLIDE_RUNNER_NAME, valkey_app: str = APP_NAME, tls_enabled: bool = False, + substrate: Substrate = Substrate.VM, ) -> None: """Configure the continuous writes runner charm to connect to Valkey via config options. @@ -51,9 +53,19 @@ def configure_cw_runner( app: Name of the continuous writes runner charm application to configure. valkey_app: Name of the Valkey application to fetch endpoints from. tls_enabled: Whether TLS is enabled. + substrate: The substrate type (VM or Kubernetes). """ - hostnames = get_cluster_addresses(juju, valkey_app) - endpoints = ",".join(f"{h}:6379" for h in hostnames) + if substrate == Substrate.VM: + addresses = get_cluster_addresses(juju, valkey_app) + else: + # for k8s we construct the hostname + addresses = [ + unit_name.replace("/", "-") + "." + valkey_app + "-endpoints" + for unit_name in juju.status().get_units(valkey_app) + ] + + port = TLS_PORT if tls_enabled else CLIENT_PORT + endpoints = ",".join(f"{h}:{port}" for h in addresses) password = get_password(juju, user=CharmUsers.VALKEY_ADMIN) cacert = cert = key = "" diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 83909fe..9fc6e02 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -86,7 +86,7 @@ async def test_network_cut_primary( # noqa: C901 download_client_certificate_from_unit(juju, APP_NAME) addresses = get_cluster_addresses(juju, APP_NAME) - configure_cw_runner(juju, valkey_app=APP_NAME, tls_enabled=tls_enabled) + configure_cw_runner(juju, valkey_app=APP_NAME, tls_enabled=tls_enabled, substrate=substrate) start_continuous_writes(juju, clear=True) # Get the current primary unit @@ -205,7 +205,7 @@ async def test_network_cut_primary( # noqa: C901 unit_count=NUM_UNITS, ) configure_cw_runner( - juju, valkey_app=APP_NAME, tls_enabled=tls_enabled + juju, valkey_app=APP_NAME, tls_enabled=tls_enabled, substrate=substrate ) # update hostnames after network restore logger.info( diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index 9655837..7f104a8 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -71,11 +71,11 @@ async def test_check_quorum(juju: jubilant.Juju) -> None: ) -async def test_scale_up(juju: jubilant.Juju, glide_runner) -> None: +async def test_scale_up(juju: jubilant.Juju, glide_runner, substrate: Substrate) -> None: """Make sure new units are added to the valkey downtime.""" app_name = existing_app(juju) or APP_NAME init_units_count = len(juju.status().apps[app_name].units) - configure_cw_runner(juju, valkey_app=app_name) + configure_cw_runner(juju, valkey_app=app_name, substrate=substrate) start_continuous_writes(juju, clear=True) # scale up @@ -137,7 +137,7 @@ async def test_scale_down_one_unit( f"Expected {init_units_count - 1} connected replicas, got {number_of_replicas}." ) - configure_cw_runner(juju, valkey_app=app_name) + configure_cw_runner(juju, valkey_app=app_name, substrate=substrate) start_continuous_writes(juju, clear=True) await asyncio.sleep(10) # let the continuous writes write some data @@ -164,7 +164,7 @@ async def test_scale_down_one_unit( ) # update hostnames after scale down - configure_cw_runner(juju, valkey_app=app_name) + configure_cw_runner(juju, valkey_app=app_name, substrate=substrate) assert_continuous_writes_increasing(juju) @@ -199,7 +199,7 @@ async def test_scale_down_multiple_units( f"Expected {init_units_count - 1} connected replicas, got {number_of_replicas}." ) - configure_cw_runner(juju, valkey_app=app_name) + configure_cw_runner(juju, valkey_app=app_name, substrate=substrate) start_continuous_writes(juju, clear=True) await asyncio.sleep(10) # let the continuous writes write some data @@ -227,7 +227,9 @@ async def test_scale_down_multiple_units( f"Unexpected quorum value for unit {unit} after scale down" ) - configure_cw_runner(juju, valkey_app=app_name) # update hostnames after scale down + configure_cw_runner( + juju, valkey_app=app_name, substrate=substrate + ) # update hostnames after scale down assert_continuous_writes_increasing(juju) @@ -270,7 +272,7 @@ async def test_scale_down_to_zero_and_back_up( f"Expected {NUM_UNITS - 1} connected replicas, got {connected_replicas}." ) - configure_cw_runner(juju, valkey_app=app_name) + configure_cw_runner(juju, valkey_app=app_name, substrate=substrate) start_continuous_writes(juju, clear=True) await asyncio.sleep(10) # let the continuous writes write some data @@ -304,7 +306,7 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, gli ) init_units_count = NUM_UNITS - configure_cw_runner(juju, valkey_app=app_name) + configure_cw_runner(juju, valkey_app=app_name, substrate=substrate) start_continuous_writes(juju, clear=True) await asyncio.sleep(10) # let the continuous writes write some data @@ -326,7 +328,9 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, gli status, app_name, unit_count=init_units_count - 1, idle_period=10 ) ) - configure_cw_runner(juju, valkey_app=app_name) # update hostnames after primary unit removal + configure_cw_runner( + juju, valkey_app=app_name, substrate=substrate + ) # update hostnames after primary unit removal new_primary_endpoint = get_primary_ip(juju, app_name) assert new_primary_endpoint != primary_endpoint, ( "Primary endpoint did not change after removing primary unit." From f3058a839ad5a6c7e49767fc7e98b7dcec09b961 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 10:58:20 +0000 Subject: [PATCH 246/282] move away from juju exec back to status ip --- tests/integration/ha/helpers/helpers.py | 6 ++---- tests/integration/ha/test_network_cut.py | 2 +- tests/integration/helpers.py | 7 +++++-- 3 files changed, 8 insertions(+), 7 deletions(-) diff --git a/tests/integration/ha/helpers/helpers.py b/tests/integration/ha/helpers/helpers.py index 9dbe148..c304c53 100644 --- a/tests/integration/ha/helpers/helpers.py +++ b/tests/integration/ha/helpers/helpers.py @@ -198,10 +198,8 @@ def get_unit_name_from_primary_ip( """ for unit_name, unit in juju.status().apps[APP_NAME].units.items(): try: - if ( - juju.exec("unit-get private-address", unit=unit_name, wait=5).stdout.strip() - == primary_ip - ): + unit_ip = unit.public_address if substrate == Substrate.VM else unit.address + if unit_ip == primary_ip: return unit_name except TimeoutError as e: logger.warning(f"Failed to get private address for {unit_name}: {e}") diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index c29aa32..18cf820 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -234,7 +234,7 @@ async def test_network_cut_primary( # noqa: C901 ) download_client_certificate_from_unit(juju, APP_NAME, unit_name=primary_unit_name) - new_unit_ip = get_ip_from_unit(juju, primary_unit_name) + new_unit_ip = get_ip_from_unit(juju, primary_unit_name, substrate) # we do not use IPs in certificates for k8s, so no need to check SANs for IP changes if substrate == Substrate.VM: diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index c75bd96..d64420a 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -752,9 +752,12 @@ def existing_app(juju: jubilant.Juju) -> str | None: return None -def get_ip_from_unit(juju: jubilant.Juju, unit_name: str) -> str: +def get_ip_from_unit(juju: jubilant.Juju, unit_name: str, substrate: Substrate) -> str: """Get the IP address of a unit based on the substrate type.""" - return juju.exec("unit-get", "private-address", unit=unit_name).stdout.strip() + for unit, unit_info in juju.status().get_units(unit_name.split("/")[0]).items(): + if unit == unit_name: + return unit_info.public_address if substrate == Substrate.VM else unit_info.address + raise ValueError(f"Unit {unit_name} not found in Juju status") def get_sentinels(juju: jubilant.Juju, primary_ip: str, tls_enabled: bool = False) -> list[dict]: From 16210dd5a111263b8c97a78218c9f3dfaf8ed8fa Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 12:34:35 +0000 Subject: [PATCH 247/282] add substrate to get_ip_from_unit in failover --- tests/integration/ha/test_failover.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index c84ecf2..02d8430 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -626,7 +626,7 @@ async def test_reboot_primary( c_writes.update() # on k8s we get a new ip - new_ip = get_ip_from_unit(juju, primary_unit_name) + new_ip = get_ip_from_unit(juju, primary_unit_name, substrate) assert ping(new_ip, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled), ( "Primary unit is not responding after reboot." ) From ed03a559bfe889f4180a3c31e45134a047748b75 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 13:14:43 +0000 Subject: [PATCH 248/282] move all config options to a single glide config option --- .../clients/requirer-charm/charmcraft.yaml | 49 ++----------- .../clients/requirer-charm/src/charm.py | 68 +++++++++++++------ .../requirer-charm/src/continuous_writes.py | 38 ++--------- tests/integration/cw_helpers.py | 9 ++- 4 files changed, 63 insertions(+), 101 deletions(-) diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index de888a6..351aa2b 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -165,48 +165,13 @@ config: description: Version of data interfaces to use type: int default: 1 - connection-source: + glide-config: description: > - Whether to read connection info from the Valkey relation ("relation") - or from the config options below ("config"). - type: string - default: config - endpoints: - description: > - Comma-separated list of Valkey endpoints in "host:port" form. - Required when connection-source is "config". - type: string - default: "" - username: - description: > - Valkey username. Required when connection-source is "config". - type: string - default: "charmed-operator" - password: - description: > - Valkey password. Required when connection-source is "config". - type: string - default: "" - tls-enabled: - description: > - Whether TLS is enabled. Used when connection-source is "config". - type: boolean - default: false - cacert: - description: > - Base64-encoded PEM CA certificate. Required when connection-source is - "config" and tls-enabled is true. - type: string - default: "" - cert: - description: > - Base64-encoded PEM client certificate. Required when connection-source - is "config" and tls-enabled is true. - type: string - default: "" - key: - description: > - Base64-encoded PEM client private key. Required when connection-source - is "config" and tls-enabled is true. + JSON string with Glide connection options. When set, the charm uses + config-based connection instead of the Valkey relation. Expected keys: + endpoints (comma-separated "host:port" string), username (string), + password (string), tls_enabled (bool), cacert (base64-encoded PEM CA + certificate string), cert (base64-encoded PEM client certificate + string), key (base64-encoded PEM client private key string). type: string default: "" diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index 8a1e079..714ce18 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -16,6 +16,8 @@ import time from pathlib import Path +from pydantic import BaseModel + import ops from charmlibs.interfaces.tls_certificates import ( CertificateRequestAttributes, @@ -42,6 +44,25 @@ SERVICE_NAME = "some-service" # Name of Pebble service that runs in the workload container. +class GlideConfig(BaseModel): + """Represents the glide-config charm configuration option.""" + + endpoints: str + username: str + password: str + tls_enabled: bool = False + cacert: str = "" + cert: str = "" + key: str = "" + + @classmethod + def from_json(cls, raw: str) -> "GlideConfig": + return cls.model_validate_json(raw) + + def to_json(self) -> str: + return self.model_dump_json() + + class RequirerCharm(ops.CharmBase): """Charm that acts as client for Valkey.""" @@ -134,18 +155,24 @@ def remote_responses(self) -> list[ResourceProviderModel] | None: DataContractV1[ResourceProviderModel], ).requests + @property + def _glide_config(self) -> GlideConfig | None: + """Parse the glide-config JSON option, or None if not set.""" + raw = str(self.config.get("glide-config", "")).strip() + if not raw: + return None + return GlideConfig.from_json(raw) + @property def _use_config(self) -> bool: - """Return True when connection-source is set to "config".""" - return self.config.get("connection-source") == "config" + """Return True when glide-config is set.""" + return self._glide_config is not None @property def credentials(self) -> dict[str, str | None]: """Retrieve the client credentials from config or relation.""" - if self._use_config: - username = str(self.config["username"]) or "" - password = str(self.config["password"]) or None - return {username: password} + if (cfg := self._glide_config) is not None: + return {cfg.username: cfg.password or None} if self.data_interfaces_version == 0: if not self.valkey_relation: @@ -170,8 +197,8 @@ def credentials(self) -> dict[str, str | None]: @property def primary_endpoint(self) -> str | None: """Retrieve the write-endpoints from config or relation.""" - if self._use_config: - return str(self.config["endpoints"]) or None + if (cfg := self._glide_config) is not None: + return cfg.endpoints or None if self.data_interfaces_version == 0: if not self.valkey_relation: @@ -188,8 +215,8 @@ def primary_endpoint(self) -> str | None: @property def tls_enabled(self) -> bool: """Retrieve the TLS flag from config or relation.""" - if self._use_config: - return bool(self.config.get("tls-enabled")) + if (cfg := self._glide_config) is not None: + return cfg.tls_enabled if self.data_interfaces_version == 0: if not self.valkey_relation: @@ -209,9 +236,8 @@ def tls_enabled(self) -> bool: @property def tls_ca_cert(self) -> str | None: """Retrieve the TLS CA cert from config or relation.""" - if self._use_config: - raw = str(self.config["cacert"]) - return base64.b64decode(raw).decode() if raw else None + if (cfg := self._glide_config) is not None: + return base64.b64decode(cfg.cacert).decode() if cfg.cacert else None if self.data_interfaces_version == 0: if not self.valkey_relation: @@ -228,9 +254,8 @@ def tls_ca_cert(self) -> str | None: @property def certificate(self) -> str | None: """Retrieve the client certificate from config or the certificates relation.""" - if self._use_config: - raw = str(self.config["cert"]) - return base64.b64decode(raw).decode() if raw else None + if (cfg := self._glide_config) is not None: + return base64.b64decode(cfg.cert).decode() if cfg.cert else None certificates, _ = self.certificates.get_assigned_certificates() if not certificates: @@ -241,9 +266,8 @@ def certificate(self) -> str | None: @property def private_key(self) -> str | None: """Retrieve the client private key from config or the certificates relation.""" - if self._use_config: - raw = str(self.config["key"]) - return base64.b64decode(raw).decode() if raw else None + if (cfg := self._glide_config) is not None: + return base64.b64decode(cfg.key).decode() if cfg.key else None _, private_key = self.certificates.get_assigned_certificates() if not private_key: @@ -328,7 +352,7 @@ def _on_execute_action(self, event: ops.ActionEvent) -> None: """Handle execute action.""" if not self._use_config and not self.valkey_relation: event.fail( - "The action can be run only after a relation is created or connection-source is set to 'config'." + "The action can be run only after a relation is created or glide-config is set." ) event.set_results({"ok": False}) return @@ -368,7 +392,7 @@ def _on_start_continuous_writes_action(self, event: ops.ActionEvent) -> None: """Handle start-continuous-writes action.""" if not self._use_config and not self.valkey_relation: event.fail( - "The action can be run only after a relation is created or connection-source is set to 'config'." + "The action can be run only after a relation is created or glide-config is set." ) return @@ -590,7 +614,7 @@ def _on_database_created(self, event: DatabaseCreatedEvent) -> None: logger.info("Database created") def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: - """Hot-reload the continuous-writes daemon when endpoints config changes.""" + """Hot-reload the continuous-writes daemon when glide-config changes.""" if not self._use_config or not CWPath.PID.value.exists(): return diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py index eec4448..898aa1a 100644 --- a/tests/integration/clients/requirer-charm/src/continuous_writes.py +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -34,9 +34,10 @@ import signal import sys from contextlib import asynccontextmanager -from dataclasses import asdict, dataclass from pathlib import Path +from pydantic import BaseModel + from glide import ( AdvancedGlideClientConfiguration, BackoffStrategy, @@ -60,8 +61,7 @@ logger = logging.getLogger(__name__) -@dataclass -class TlsConfig: +class TlsConfig(BaseModel): """TLS certificate paths for the Glide client.""" cert_path: str @@ -69,8 +69,7 @@ class TlsConfig: ca_path: str -@dataclass -class DaemonConfig: +class DaemonConfig(BaseModel): """Connection configuration for the continuous-writes daemon.""" endpoints: str @@ -83,36 +82,11 @@ class DaemonConfig: @classmethod def from_file(cls, path: Path) -> "DaemonConfig": """Load and validate config from a JSON file.""" - data = json.loads(path.read_text()) - tls = ( - TlsConfig( - cert_path=data["cert_path"], key_path=data["key_path"], ca_path=data["ca_path"] - ) - if data.get("tls_enabled") - else None - ) - return cls( - endpoints=data["endpoints"], - username=data["username"], - password=data["password"], - tls=tls, - initial_count=data.get("initial_count", 0), - clear_existing=data.get("clear_existing", False), - ) + return cls.model_validate_json(path.read_text()) def to_file(self, path: Path) -> None: """Serialise config to a JSON file.""" - data: dict[str, object] = { - "endpoints": self.endpoints, - "username": self.username, - "password": self.password, - "tls_enabled": self.tls is not None, - "initial_count": self.initial_count, - "clear_existing": self.clear_existing, - } - if self.tls is not None: - data.update(asdict(self.tls)) - path.write_text(json.dumps(data)) + path.write_text(self.model_dump_json()) def _write_state_atomic(last_written: int, count: int) -> None: diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index ed49b86..dc93ac4 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -75,17 +75,16 @@ def configure_cw_runner( cert = base64.b64encode(Path(TLS_CERT_FILE).read_bytes()).decode() key = base64.b64encode(Path(TLS_KEY_FILE).read_bytes()).decode() - values: dict = { - "connection-source": "config", + glide_config = json.dumps({ "endpoints": endpoints, "username": CharmUsers.VALKEY_ADMIN.value, "password": password, - "tls-enabled": tls_enabled, + "tls_enabled": tls_enabled, "cacert": cacert, "cert": cert, "key": key, - } - juju.config(app=app, values=values) + }) + juju.config(app=app, values={"glide-config": glide_config}) def start_continuous_writes( From 05e2765747838d93c28b3585477de8af856c47c2 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 14:52:42 +0000 Subject: [PATCH 249/282] use an action param to pass config for execute action --- .../clients/requirer-charm/charmcraft.yaml | 7 + .../clients/requirer-charm/src/charm.py | 35 +++-- .../requirer-charm/src/glide_helpers.py | 138 ++++++++++++++++++ tests/integration/cw_helpers.py | 20 +-- tests/integration/glide_helpers.py | 114 +++++++++++++++ 5 files changed, 292 insertions(+), 22 deletions(-) create mode 100644 tests/integration/clients/requirer-charm/src/glide_helpers.py create mode 100644 tests/integration/glide_helpers.py diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index 351aa2b..970b61c 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -108,6 +108,13 @@ actions: command: description: The Valkey command to execute (e.g. "PING", "SET key value", "GET key") type: string + config: + description: > + Serialized GlideClientConfiguration JSON produced by + glide_helpers.serialize_glide_config(). The charm connects using this + configuration directly, independent of any relation or glide-config + option. + type: string get-credentials: description: Action for fetching all available credentials from relations. diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index 714ce18..5886c95 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -16,8 +16,6 @@ import time from pathlib import Path -from pydantic import BaseModel - import ops from charmlibs.interfaces.tls_certificates import ( CertificateRequestAttributes, @@ -38,6 +36,9 @@ ValkeyResponseModel, build_model, ) +from glide import GlideClient +from glide_helpers import deserialize_glide_config, parse_custom_command_result +from pydantic import BaseModel logger = logging.getLogger(__name__) @@ -350,25 +351,33 @@ def _on_get_action(self, event: ops.ActionEvent) -> None: def _on_execute_action(self, event: ops.ActionEvent) -> None: """Handle execute action.""" - if not self._use_config and not self.valkey_relation: - event.fail( - "The action can be run only after a relation is created or glide-config is set." - ) - event.set_results({"ok": False}) - return - command = str(event.params.get("command", "")) if not command: event.fail("Parameter command is required.") event.set_results({"ok": False}) return - user, _ = next(iter(self.credentials.items())) args = command.split() - client = self.get_valkey_client(user) + + try: + glide_config = deserialize_glide_config(str(event.params["config"])) + except Exception as e: + event.fail(f"Failed to deserialize config: {e}") + event.set_results({"ok": False}) + return + + async def _run(): + client = await GlideClient.create(glide_config) + try: + return await client.custom_command(args) + finally: + await client.close() + try: - result = asyncio.run(client.execute_command(args)) - event.set_results({"ok": True, "result": result}) + result = asyncio.run(_run()) + event.set_results( + {"ok": True, "result": json.dumps(parse_custom_command_result(result))} + ) except Exception as e: event.set_results({"ok": False, "result": json.dumps(str(e))}) diff --git a/tests/integration/clients/requirer-charm/src/glide_helpers.py b/tests/integration/clients/requirer-charm/src/glide_helpers.py new file mode 100644 index 0000000..b4f6f97 --- /dev/null +++ b/tests/integration/clients/requirer-charm/src/glide_helpers.py @@ -0,0 +1,138 @@ +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. + +"""Serialization/deserialization helpers for GlideClientConfiguration objects. + +Converts a GlideClientConfiguration (and its nested objects) to/from a JSON +string so it can be passed as a Juju action parameter. + +Bytes fields are base64-encoded; enums are stored by name; nested Glide +objects are tagged with ``__class__`` for round-trip reconstruction. +""" + +import base64 +import json +from enum import Enum +from typing import Any + +from glide import ( + AdvancedGlideClientConfiguration, + BackoffStrategy, + GlideClientConfiguration, + NodeAddress, + ReadFrom, + ServerCredentials, + TlsAdvancedConfiguration, +) + +# Maps each Glide class to the set of fields that should be serialized. +# Tuple values like ``(list, NodeAddress)`` are documentation only — the +# serialize/deserialize logic recurses structurally, not via this type info. +SCHEMA: dict[type, dict[str, Any]] = { + GlideClientConfiguration: { + "addresses": (list, NodeAddress), + "use_tls": bool, + "request_timeout": (int, type(None)), + "read_from": ReadFrom, + "credentials": (ServerCredentials, type(None)), + "reconnect_strategy": (BackoffStrategy, type(None)), + "advanced_config": (AdvancedGlideClientConfiguration, type(None)), + }, + NodeAddress: { + "host": str, + "port": int, + }, + ServerCredentials: { + "username": (str, type(None)), + "password": (str, type(None)), + }, + BackoffStrategy: { + "num_of_retries": int, + "factor": int, + "exponent_base": int, + "jitter_percent": (int, type(None)), + }, + AdvancedGlideClientConfiguration: { + "connection_timeout": (int, type(None)), + "tls_config": (TlsAdvancedConfiguration, type(None)), + }, + TlsAdvancedConfiguration: { + "use_insecure_tls": bool, + "client_cert_pem": (bytes, type(None)), + "client_key_pem": (bytes, type(None)), + "root_pem_cacerts": (bytes, type(None)), + }, +} + +_GLIDE_CLASSES: dict[str, type] = {cls.__name__: cls for cls in SCHEMA} +_ENUM_CLASSES: dict[str, type[Enum]] = {"ReadFrom": ReadFrom} + + +def serialize(obj: Any) -> Any: + """Recursively serialize a Glide object to a JSON-compatible structure.""" + if obj is None: + return None + if isinstance(obj, bytes): + return {"__bytes__": base64.b64encode(obj).decode()} + if isinstance(obj, Enum): + return {"__enum__": type(obj).__name__, "value": obj.name} + if type(obj) in SCHEMA: + return { + "__class__": type(obj).__name__, + **{field: serialize(getattr(obj, field)) for field in SCHEMA[type(obj)]}, + } + if isinstance(obj, list): + return [serialize(i) for i in obj] + return obj # str, int, bool, None + + +def deserialize(d: Any) -> Any: + """Recursively deserialize a JSON-compatible structure back to Glide objects.""" + if d is None or not isinstance(d, (dict, list)): + return d + if isinstance(d, list): + return [deserialize(i) for i in d] + if "__bytes__" in d: + return base64.b64decode(d["__bytes__"]) + if "__enum__" in d: + cls = _ENUM_CLASSES[d["__enum__"]] + return cls[d["value"]] + if "__class__" in d: + cls = _GLIDE_CLASSES[d["__class__"]] + fields = {k: deserialize(v) for k, v in d.items() if k != "__class__"} + return cls(**fields) + return d + + +def serialize_glide_config(config: GlideClientConfiguration) -> str: + """Serialize a GlideClientConfiguration to a JSON string.""" + return json.dumps(serialize(config)) + + +def deserialize_glide_config(payload: str) -> GlideClientConfiguration: + """Deserialize a JSON string back to a GlideClientConfiguration.""" + return deserialize(json.loads(payload)) + + +def parse_custom_command_result(result: Any) -> Any: + """Recursively convert a custom_command return value to a JSON-serializable form. + + Glide's custom_command can return bytes, lists (possibly nested), mappings, + integers, booleans, or None. bytes values are decoded as UTF-8 with a + fallback to base64 so the result is always a plain str. + """ + if result is None: + return None + if isinstance(result, bytes): + try: + return result.decode("utf-8") + except UnicodeDecodeError: + return base64.b64encode(result).decode("ascii") + if isinstance(result, list): + return [parse_custom_command_result(item) for item in result] + if isinstance(result, dict): + return { + parse_custom_command_result(k): parse_custom_command_result(v) + for k, v in result.items() + } + return result # int, float, bool, str diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index dc93ac4..67051b8 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -75,15 +75,17 @@ def configure_cw_runner( cert = base64.b64encode(Path(TLS_CERT_FILE).read_bytes()).decode() key = base64.b64encode(Path(TLS_KEY_FILE).read_bytes()).decode() - glide_config = json.dumps({ - "endpoints": endpoints, - "username": CharmUsers.VALKEY_ADMIN.value, - "password": password, - "tls_enabled": tls_enabled, - "cacert": cacert, - "cert": cert, - "key": key, - }) + glide_config = json.dumps( + { + "endpoints": endpoints, + "username": CharmUsers.VALKEY_ADMIN.value, + "password": password, + "tls_enabled": tls_enabled, + "cacert": cacert, + "cert": cert, + "key": key, + } + ) juju.config(app=app, values={"glide-config": glide_config}) diff --git a/tests/integration/glide_helpers.py b/tests/integration/glide_helpers.py new file mode 100644 index 0000000..7de1391 --- /dev/null +++ b/tests/integration/glide_helpers.py @@ -0,0 +1,114 @@ +# Copyright 2026 Canonical Ltd. +# See LICENSE file for licensing details. + +"""Serialization/deserialization helpers for GlideClientConfiguration objects. + +Converts a GlideClientConfiguration (and its nested objects) to/from a JSON +string so it can be passed as a Juju action parameter. + +Bytes fields are base64-encoded; enums are stored by name; nested Glide +objects are tagged with ``__class__`` for round-trip reconstruction. +""" + +import base64 +import json +from enum import Enum +from typing import Any + +from glide import ( + AdvancedGlideClientConfiguration, + BackoffStrategy, + GlideClientConfiguration, + NodeAddress, + ReadFrom, + ServerCredentials, + TlsAdvancedConfiguration, +) + +# Maps each Glide class to the set of fields that should be serialized. +# Tuple values like ``(list, NodeAddress)`` are documentation only — the +# serialize/deserialize logic recurses structurally, not via this type info. +SCHEMA: dict[type, dict[str, Any]] = { + GlideClientConfiguration: { + "addresses": (list, NodeAddress), + "use_tls": bool, + "request_timeout": (int, type(None)), + "read_from": ReadFrom, + "credentials": (ServerCredentials, type(None)), + "reconnect_strategy": (BackoffStrategy, type(None)), + "advanced_config": (AdvancedGlideClientConfiguration, type(None)), + }, + NodeAddress: { + "host": str, + "port": int, + }, + ServerCredentials: { + "username": (str, type(None)), + "password": (str, type(None)), + }, + BackoffStrategy: { + "num_of_retries": int, + "factor": int, + "exponent_base": int, + "jitter_percent": (int, type(None)), + }, + AdvancedGlideClientConfiguration: { + "connection_timeout": (int, type(None)), + "tls_config": (TlsAdvancedConfiguration, type(None)), + }, + TlsAdvancedConfiguration: { + "use_insecure_tls": bool, + "client_cert_pem": (bytes, type(None)), + "client_key_pem": (bytes, type(None)), + "root_pem_cacerts": (bytes, type(None)), + }, +} + +_GLIDE_CLASSES: dict[str, type] = {cls.__name__: cls for cls in SCHEMA} +_ENUM_CLASSES: dict[str, type[Enum]] = {"ReadFrom": ReadFrom} + + +def serialize(obj: Any) -> Any: + """Recursively serialize a Glide object to a JSON-compatible structure.""" + if obj is None: + return None + if isinstance(obj, bytes): + return {"__bytes__": base64.b64encode(obj).decode()} + if isinstance(obj, Enum): + return {"__enum__": type(obj).__name__, "value": obj.name} + if type(obj) in SCHEMA: + return { + "__class__": type(obj).__name__, + **{field: serialize(getattr(obj, field)) for field in SCHEMA[type(obj)]}, + } + if isinstance(obj, list): + return [serialize(i) for i in obj] + return obj # str, int, bool, None + + +def deserialize(d: Any) -> Any: + """Recursively deserialize a JSON-compatible structure back to Glide objects.""" + if d is None or not isinstance(d, (dict, list)): + return d + if isinstance(d, list): + return [deserialize(i) for i in d] + if "__bytes__" in d: + return base64.b64decode(d["__bytes__"]) + if "__enum__" in d: + cls = _ENUM_CLASSES[d["__enum__"]] + return cls[d["value"]] + if "__class__" in d: + cls = _GLIDE_CLASSES[d["__class__"]] + fields = {k: deserialize(v) for k, v in d.items() if k != "__class__"} + return cls(**fields) + return d + + +def serialize_glide_config(config: GlideClientConfiguration) -> str: + """Serialize a GlideClientConfiguration to a JSON string.""" + return json.dumps(serialize(config)) + + +def deserialize_glide_config(payload: str) -> GlideClientConfiguration: + """Deserialize a JSON string back to a GlideClientConfiguration.""" + return deserialize(json.loads(payload)) From cbaa80f17b68be79e25798fc45c3ae37b8ec3220 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 15:56:34 +0000 Subject: [PATCH 250/282] fix linter issues --- pyproject.toml | 3 ++- .../clients/requirer-charm/src/continuous_writes.py | 3 +-- tests/integration/clients/requirer-charm/src/cw_helpers.py | 3 ++- tests/integration/conftest.py | 2 +- 4 files changed, 6 insertions(+), 5 deletions(-) diff --git a/pyproject.toml b/pyproject.toml index ed1f0ee..c24bc38 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -6,7 +6,7 @@ package-mode = false requires-poetry = ">=2.0.0" [tool.poetry.dependencies] -python = "^3.12" # switch to 3.14 once charm base is 26.04 +python = "^3.12" # switch to 3.14 once charm base is 26.04 ops = "^3.5.0" charmlibs-pathops = "^1.2.0" charmlibs-snap = "^1.0.1" @@ -93,6 +93,7 @@ extend-exclude = [ "__pycache__", "*.egg_info", "../../common/common/lib/charms/**", + "tests/integration/clients/requirer-charm/lib/charms/**", ] lint.per-file-ignores = { "tests/*" = ["D100", "D101", "D102", "D103", "D104"] } diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py index 898aa1a..adae211 100644 --- a/tests/integration/clients/requirer-charm/src/continuous_writes.py +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -36,8 +36,6 @@ from contextlib import asynccontextmanager from pathlib import Path -from pydantic import BaseModel - from glide import ( AdvancedGlideClientConfiguration, BackoffStrategy, @@ -47,6 +45,7 @@ ServerCredentials, TlsAdvancedConfiguration, ) +from pydantic import BaseModel KEY = "cw_key" CONFIG_PATH = Path("/tmp/cw_config.json") diff --git a/tests/integration/clients/requirer-charm/src/cw_helpers.py b/tests/integration/clients/requirer-charm/src/cw_helpers.py index 6557e70..cf25f37 100644 --- a/tests/integration/clients/requirer-charm/src/cw_helpers.py +++ b/tests/integration/clients/requirer-charm/src/cw_helpers.py @@ -11,7 +11,8 @@ from pathlib import Path from continuous_writes import KEY as CW_KEY -from continuous_writes import DaemonConfig, glide_client as cw_client +from continuous_writes import DaemonConfig +from continuous_writes import glide_client as cw_client logger = logging.getLogger(__name__) diff --git a/tests/integration/conftest.py b/tests/integration/conftest.py index ad00706..d9ee2a8 100644 --- a/tests/integration/conftest.py +++ b/tests/integration/conftest.py @@ -24,7 +24,7 @@ def glide_runner_charm(arch: str) -> str: @pytest.fixture(scope="function") def glide_runner(juju: jubilant.Juju, glide_runner_charm: str) -> None: - """Deploy continous writes runner charm if not already deployed.""" + """Deploy continuous writes runner charm if not already deployed.""" if GLIDE_RUNNER_NAME not in juju.status().apps: juju.deploy(glide_runner_charm, app=GLIDE_RUNNER_NAME) juju.wait( From 98cdedab6d31177debba8ce988fe3124cf3f101c Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 18:33:54 +0000 Subject: [PATCH 251/282] migrate test_charm --- tests/integration/helpers.py | 162 +++++++++++++++++++++++++------- tests/integration/test_charm.py | 48 ++++++---- 2 files changed, 159 insertions(+), 51 deletions(-) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 869801c..f59412e 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -38,6 +38,7 @@ CharmUsers, Substrate, ) +from tests.integration.glide_helpers import serialize_glide_config logger = logging.getLogger(__name__) @@ -257,6 +258,51 @@ def get_secret_by_label(juju: jubilant.Juju, label: str) -> dict[str, str]: raise SecretNotFoundError(f"Secret with label {label} not found") +def get_glide_config( + juju: jubilant.Juju, + app_name: str, + cluster_addresses: list[str] | None = None, + username: str | None = CharmUsers.VALKEY_ADMIN.value, + password: str | None = None, + tls_enabled: bool = False, +) -> GlideClientConfiguration: + """Construct a GlideClientConfiguration from Juju model information and secrets.""" + cluster_addresses = cluster_addresses or get_cluster_addresses(juju, app_name) + addresses = [ + NodeAddress(host=host, port=TLS_PORT if tls_enabled else CLIENT_PORT) + for host in cluster_addresses + ] + + credentials = None + if username or password: + credentials = ServerCredentials(username=username, password=password) + + tls_cert = tls_key = tls_ca_cert = None + if tls_enabled: + download_client_certificate_from_unit(juju, app_name=app_name) + # Read locally stored certificate files + with open("client.pem", "rb") as f: + tls_cert = f.read() + with open("client.key", "rb") as f: + tls_key = f.read() + with open("client_ca.pem", "rb") as f: + tls_ca_cert = f.read() + + tls_config = TlsAdvancedConfiguration( + client_cert_pem=tls_cert if tls_enabled else None, + client_key_pem=tls_key if tls_enabled else None, + root_pem_cacerts=tls_ca_cert if tls_enabled else None, + ) + + client_config = GlideClientConfiguration( + addresses, + credentials=credentials, + use_tls=True if tls_enabled else False, + advanced_config=AdvancedGlideClientConfiguration(tls_config=tls_config), + ) + return client_config + + @asynccontextmanager async def create_valkey_client( hostnames: list[str], @@ -530,28 +576,42 @@ def get_quorum(juju: jubilant.Juju, unit_name: str) -> int: return int(json.loads(result.stdout)["quorum"]) -async def set_key( - hostnames: list[str], +def set_key( + juju: jubilant.Juju, + endpoints: list[str], username: str, password: str, key: str, value: str, tls_enabled: bool = False, -) -> bytes | None: +) -> str: """Write a key-value pair to the Valkey cluster. Args: - hostnames: List of hostnames of the Valkey cluster nodes. - key: The key to write. - value: The value to write. + juju: An instance of Jubilant's Juju class on which to run Juju commands + endpoints: List of endpoints of the Valkey cluster nodes. username: The username for authentication. password: The password for authentication. + key: The key to set. + value: The value to set. tls_enabled: Whether TLS certificates are needed. """ - async with create_valkey_client( - hostnames=hostnames, username=username, password=password, tls_enabled=tls_enabled - ) as client: - return await client.set(key, value) + glide_config = get_glide_config( + juju=juju, + app_name=APP_NAME, + cluster_addresses=endpoints, + username=username, + password=password, + tls_enabled=tls_enabled, + ) + task = juju.run( + f"{GLIDE_RUNNER_NAME}/leader", + "execute", + params={"command": f"SET {key} {value}", "config": serialize_glide_config(glide_config)}, + ) + if task.status != "completed": + raise RuntimeError(f"Command execution failed: {task.results}") + return json.loads(task.results.get("result", "null")) async def get_key( @@ -603,8 +663,10 @@ def ping( return False -async def ping_cluster( - hostnames: list[str], +def ping_cluster( + juju: jubilant.Juju, + app_name: str, + endpoints: list[str], username: str, password: str, tls_enabled: bool = False, @@ -612,7 +674,9 @@ async def ping_cluster( """Ping all nodes in the Valkey cluster. Args: - hostnames: List of hostnames of the Valkey cluster nodes. + juju: An instance of Jubilant's Juju class on which to run Juju commands + app_name: The name of the Valkey application + endpoints: List of endpoints of the Valkey cluster nodes. username: The username for authentication. password: The password for authentication. tls_enabled: Whether TLS certificates are needed. @@ -620,10 +684,20 @@ async def ping_cluster( Returns: True if all nodes respond to a ping, False otherwise. """ - async with create_valkey_client( - hostnames=hostnames, username=username, password=password, tls_enabled=tls_enabled - ) as client: - return await client.ping() == "PONG".encode() + glide_config = get_glide_config( + juju=juju, + app_name=app_name, + cluster_addresses=endpoints, + username=username, + password=password, + tls_enabled=tls_enabled, + ) + task = juju.run( + f"{GLIDE_RUNNER_NAME}/leader", + "execute", + params={"command": "ping", "config": serialize_glide_config(glide_config)}, + ) + return task.status == "completed" and json.loads(task.results.get("result", "")) == "PONG" def get_number_connected_replicas( @@ -654,33 +728,55 @@ class WrongPassError(Exception): """Raised when authentication fails due to incorrect credentials.""" -async def auth_test( - hostnames: list[str], username: str | None, password: str | None, tls_enabled: bool = False +def auth_test( + juju: jubilant.Juju, + cluster_addresses: list[str] | None = None, + username: str | None = None, + password: str | None = None, + tls_enabled: bool = False, + glide_runner_unit: str = f"{GLIDE_RUNNER_NAME}/leader", ) -> bool: """Test authentication to the Valkey cluster by attempting to ping it. Args: - hostnames: List of hostnames of the Valkey cluster nodes. + juju: An instance of Jubilant's Juju class on which to run Juju commands + cluster_addresses: List of hostnames of the Valkey cluster nodes. If None, will be retrieved from Juju. username: The username for authentication. password: The password for authentication. tls_enabled: Whether TLS certificates are needed. + glide_runner_unit: The unit name of the glide-runner to execute the command on Returns: True if authentication is successful and the cluster responds to a ping, False otherwise. """ - try: - async with create_valkey_client( - hostnames=hostnames, username=username, password=password, tls_enabled=tls_enabled - ) as client: - return await client.ping() == "PONG".encode() - except Exception as e: - error_message = str(e) - if "NOAUTH" in error_message: - raise NoAuthError("Authentication failed: NOAUTH error") from e - elif "WRONGPASS" in error_message: - raise WrongPassError("Authentication failed: WRONGPASS error") from e - else: - raise e + glide_config = get_glide_config( + juju=juju, + cluster_addresses=cluster_addresses, + app_name=APP_NAME, + username=username, + password=password, + tls_enabled=tls_enabled, + ) + task = juju.run( + glide_runner_unit, + "execute", + params={"command": "ping", "config": serialize_glide_config(glide_config)}, + ) + result = json.loads(task.results.get("result", "")) + if "NOAUTH" in result: + raise NoAuthError("Authentication failed: NOAUTH error") + elif "WRONGPASS" in result: + raise WrongPassError("Authentication failed: WRONGPASS error") + return task.status == "completed" and result == "PONG" + + # except Exception as e: + # error_message = str(e) + # if "NOAUTH" in error_message: + # raise NoAuthError("Authentication failed: NOAUTH error") from e + # elif "WRONGPASS" in error_message: + # raise WrongPassError("Authentication failed: WRONGPASS error") from e + # else: + # raise e def remove_number_units( diff --git a/tests/integration/test_charm.py b/tests/integration/test_charm.py index e80ce6e..75f7fcd 100644 --- a/tests/integration/test_charm.py +++ b/tests/integration/test_charm.py @@ -55,13 +55,13 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) ) -async def test_authentication(juju: jubilant.Juju) -> None: +def test_authentication(juju: jubilant.Juju) -> None: """Assert that we can authenticate to valkey.""" addresses = get_cluster_addresses(juju, APP_NAME) # try without authentication with pytest.raises(NoAuthError): - await auth_test(addresses, username=None, password=None) + auth_test(juju, cluster_addresses=addresses, username=None, password=None) # Authenticate with internal user password = get_password(juju, user=CharmUsers.VALKEY_ADMIN) @@ -74,7 +74,7 @@ async def test_authentication(juju: jubilant.Juju) -> None: ), "Failed to authenticate with Valkey cluster using CLI" -async def test_update_admin_password(juju: jubilant.Juju) -> None: +def test_update_admin_password(juju: jubilant.Juju) -> None: """Assert the admin password is updated when adding a user secret to the config.""" # create a user secret and grant it to the application logger.info("Updating operator password") @@ -94,17 +94,21 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: addresses = get_cluster_addresses(juju, APP_NAME) # confirm old password no longer works with pytest.raises(WrongPassError): - await auth_test(addresses, username=CharmUsers.VALKEY_ADMIN.value, password=old_password) + auth_test( + juju, + cluster_addresses=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=old_password, + ) assert ( - await ping_cluster( - addresses, username=CharmUsers.VALKEY_ADMIN.value, password=new_password - ) + ping_cluster(juju, APP_NAME, addresses, CharmUsers.VALKEY_ADMIN.value, new_password) is True ), "Failed to authenticate with new admin password" assert ( - await set_key( + set_key( + juju, addresses, username=CharmUsers.VALKEY_ADMIN.value, password=new_password, @@ -138,7 +142,7 @@ async def test_update_admin_password(juju: jubilant.Juju) -> None: ), f"Failed to read data after admin password update on host {address}" -async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None: +def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None: """Assert the admin password is updated when adding a user secret to the config.""" # create a user secret and grant it to the application secret = get_secret_by_label(juju, label=INTERNAL_USERS_SECRET_LABEL) @@ -170,8 +174,10 @@ async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None # perform read operation with the updated password assert ( - await ping_cluster( - get_cluster_addresses(juju, APP_NAME), + ping_cluster( + juju=juju, + app_name=APP_NAME, + endpoints=get_cluster_addresses(juju, APP_NAME), username=CharmUsers.VALKEY_ADMIN.value, password=new_password, ) @@ -179,8 +185,9 @@ async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None ), "Failed to authenticate with new admin password" assert ( - await set_key( - get_cluster_addresses(juju, APP_NAME), + set_key( + juju=juju, + endpoints=get_cluster_addresses(juju, APP_NAME), username=CharmUsers.VALKEY_ADMIN.value, password=new_password, key=TEST_KEY, @@ -199,7 +206,7 @@ async def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None ) -async def test_user_secret_permissions(juju: jubilant.Juju) -> None: +def test_user_secret_permissions(juju: jubilant.Juju) -> None: """If a user secret is not granted, ensure we can process updated permissions.""" logger.info("Creating new user secret") secret_name = "my_secret" @@ -230,13 +237,18 @@ async def test_user_secret_permissions(juju: jubilant.Juju) -> None: # perform read operation with the updated password addresses = get_cluster_addresses(juju, APP_NAME) - assert await ping_cluster( - addresses, username=CharmUsers.VALKEY_ADMIN.value, password=new_password + assert ping_cluster( + juju=juju, + app_name=APP_NAME, + endpoints=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=new_password, ), "Failed to authenticate with new admin password" assert ( - await set_key( - addresses, + set_key( + juju=juju, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=new_password, key=TEST_KEY, From f12e258f0904b16e70fe7f9b565588ae6d88a2e5 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 18:34:09 +0000 Subject: [PATCH 252/282] fix status for secret access --- src/managers/cluster.py | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/src/managers/cluster.py b/src/managers/cluster.py index 6256b69..9275e36 100644 --- a/src/managers/cluster.py +++ b/src/managers/cluster.py @@ -116,7 +116,11 @@ def reload_tls_settings(self, tls_config: dict[str, str]) -> None: def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObject]: """Compute the cluster manager's statuses.""" - status_list: list[StatusObject] = [] + status_list: list[StatusObject] = self.state.statuses.get( + scope=scope, + component=self.name, + running_status_only=True, + ).root # Peer relation not established yet, or model not built yet for unit or app if not self.state.cluster.model or not self.state.unit_server.model: From 69426cd37f9fbfdcaaafa1def69e370f63eb2cb4 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 18:59:58 +0000 Subject: [PATCH 253/282] migrate test_tls --- tests/integration/helpers.py | 37 ++++++++------ tests/integration/tls/test_tls.py | 85 +++++++++++++++++-------------- 2 files changed, 69 insertions(+), 53 deletions(-) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index f59412e..fd310b1 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -614,8 +614,9 @@ def set_key( return json.loads(task.results.get("result", "null")) -async def get_key( - hostnames: list[str], +def get_key( + juju: jubilant.Juju, + endpoints: list[str], username: str, password: str, key: str, @@ -624,16 +625,29 @@ async def get_key( """Read a value from the Valkey cluster by key. Args: - hostnames: List of hostnames of the Valkey cluster nodes. + juju: An instance of Jubilant's Juju class on which to run Juju commands + endpoints: List of endpoints of the Valkey cluster nodes. key: The key to read. username: The username for authentication. password: The password for authentication. tls_enabled: Whether TLS certificates are needed. """ - async with create_valkey_client( - hostnames=hostnames, username=username, password=password, tls_enabled=tls_enabled - ) as client: - return await client.get(key) + glide_config = get_glide_config( + juju=juju, + app_name=APP_NAME, + cluster_addresses=endpoints, + username=username, + password=password, + tls_enabled=tls_enabled, + ) + task = juju.run( + f"{GLIDE_RUNNER_NAME}/leader", + "execute", + params={"command": f"GET {key}", "config": serialize_glide_config(glide_config)}, + ) + if task.status != "completed": + raise RuntimeError(f"Command execution failed: {task.results}") + return json.loads(task.results.get("result", "null")) def ping( @@ -769,15 +783,6 @@ def auth_test( raise WrongPassError("Authentication failed: WRONGPASS error") return task.status == "completed" and result == "PONG" - # except Exception as e: - # error_message = str(e) - # if "NOAUTH" in error_message: - # raise NoAuthError("Authentication failed: NOAUTH error") from e - # elif "WRONGPASS" in error_message: - # raise WrongPassError("Authentication failed: WRONGPASS error") from e - # else: - # raise e - def remove_number_units( juju: jubilant.Juju, app: str, num_units: int, substrate: Substrate diff --git a/tests/integration/tls/test_tls.py b/tests/integration/tls/test_tls.py index 2358a5c..b30becb 100644 --- a/tests/integration/tls/test_tls.py +++ b/tests/integration/tls/test_tls.py @@ -4,7 +4,6 @@ import logging import jubilant -import pytest from literals import CharmUsers, Substrate from tests.integration.helpers import ( @@ -45,15 +44,16 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) ) -async def test_tls_enabled(juju: jubilant.Juju) -> None: +def test_tls_enabled(juju: jubilant.Juju) -> None: """Check if the TLS has been enabled on app startup.""" logger.info("Downloading TLS certificates from deployed app.") download_client_certificate_from_unit(juju, APP_NAME) addresses = get_cluster_addresses(juju, APP_NAME) logger.info("Check access with TLS enabled") - result = await set_key( - hostnames=addresses, + result = set_key( + juju=juju, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -62,18 +62,21 @@ async def test_tls_enabled(juju: jubilant.Juju) -> None: ) assert result == "OK", "Failed to write data with TLS enabled" - assert await get_key( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=True, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data with TLS enabled" + assert ( + get_key( + juju=juju, + endpoints=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=True, + key=TEST_KEY, + ) + == TEST_VALUE + ), "Failed to read data with TLS enabled" logger.info("Check access without certs fails when TLS enabled") - with pytest.raises(Exception) as exc_info: - await auth_test(addresses, username=None, password=None) - assert "Connection error" in str(exc_info.value), "Access without TLS did not fail as expected" + + assert not auth_test(juju, addresses, username=None, password=None) def test_scale_up_with_tls_enabled(juju: jubilant.Juju) -> None: @@ -88,7 +91,7 @@ def test_scale_up_with_tls_enabled(juju: jubilant.Juju) -> None: ) -async def test_disable_tls(juju: jubilant.Juju) -> None: +def test_disable_tls(juju: jubilant.Juju) -> None: """Disable TLS on a running cluster and check if it is still accessible.""" logger.info("Removing client-certificates relation") juju.remove_relation(f"{APP_NAME}:client-certificates", f"{TLS_NAME}:certificates") @@ -100,8 +103,9 @@ async def test_disable_tls(juju: jubilant.Juju) -> None: addresses = get_cluster_addresses(juju, APP_NAME) logger.info("Check access with TLS disabled") - result = await set_key( - hostnames=addresses, + result = set_key( + juju=juju, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=False, @@ -110,16 +114,20 @@ async def test_disable_tls(juju: jubilant.Juju) -> None: ) assert result == "OK", "Failed to write data after TLS was disabled" - assert await get_key( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=False, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data after TLS was disabled" + assert ( + get_key( + juju=juju, + endpoints=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=False, + key=TEST_KEY, + ) + == TEST_VALUE + ), "Failed to read data after TLS was disabled" -async def test_enable_tls(juju: jubilant.Juju) -> None: +def test_enable_tls(juju: jubilant.Juju) -> None: """Enable TLS on a running cluster and check if it is still accessible.""" logger.info("Enabling client TLS") juju.integrate(f"{APP_NAME}:client-certificates", TLS_NAME) @@ -133,8 +141,9 @@ async def test_enable_tls(juju: jubilant.Juju) -> None: addresses = get_cluster_addresses(juju, APP_NAME) logger.info("Check access with TLS enabled") - result = await set_key( - hostnames=addresses, + result = set_key( + juju=juju, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -143,15 +152,17 @@ async def test_enable_tls(juju: jubilant.Juju) -> None: ) assert result == "OK", "Failed to write data with TLS enabled" - assert await get_key( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=True, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data with TLS enabled" + assert ( + get_key( + juju=juju, + endpoints=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=True, + key=TEST_KEY, + ) + == TEST_VALUE + ), "Failed to read data with TLS enabled" logger.info("Check access without certs fails when TLS enabled") - with pytest.raises(Exception) as exc_info: - await auth_test(addresses, username=None, password=None) - assert "Connection error" in str(exc_info.value), "Access without TLS did not fail as expected" + assert not auth_test(juju, addresses, username=None, password=None) From 23af3032af4f13c270157f3b8cf7317cabb9ccbd Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 19:14:40 +0000 Subject: [PATCH 254/282] add deploying glide runner to build and deploy --- tests/integration/test_charm.py | 10 ++++++++-- tests/integration/tls/test_tls.py | 17 +++++++++++++++-- 2 files changed, 23 insertions(+), 4 deletions(-) diff --git a/tests/integration/test_charm.py b/tests/integration/test_charm.py index 75f7fcd..625c646 100644 --- a/tests/integration/test_charm.py +++ b/tests/integration/test_charm.py @@ -14,6 +14,7 @@ from statuses import CharmStatuses, ClusterStatuses from tests.integration.helpers import ( APP_NAME, + GLIDE_RUNNER_NAME, IMAGE_RESOURCE, INTERNAL_USERS_SECRET_LABEL, NoAuthError, @@ -39,7 +40,9 @@ TEST_VALUE = "test_value" -def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) -> None: +def test_build_and_deploy( + charm: str, juju: jubilant.Juju, substrate: Substrate, glide_runner_charm: str +) -> None: """Build the charm-under-test and deploy it with three units.""" juju.deploy( charm, @@ -47,8 +50,11 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) num_units=NUM_UNITS, trust=True, ) + juju.deploy(glide_runner_charm, app=GLIDE_RUNNER_NAME) juju.wait( - lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, GLIDE_RUNNER_NAME, idle_period=30 + ), timeout=600, delay=5, successes=3, diff --git a/tests/integration/tls/test_tls.py b/tests/integration/tls/test_tls.py index b30becb..9f6cd62 100644 --- a/tests/integration/tls/test_tls.py +++ b/tests/integration/tls/test_tls.py @@ -8,6 +8,7 @@ from literals import CharmUsers, Substrate from tests.integration.helpers import ( APP_NAME, + GLIDE_RUNNER_NAME, IMAGE_RESOURCE, TLS_CHANNEL, TLS_NAME, @@ -28,7 +29,9 @@ TEST_VALUE = "test_value" -def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) -> None: +def test_build_and_deploy( + charm: str, juju: jubilant.Juju, substrate: Substrate, glide_runner_charm: str +) -> None: """Deploy the charm under test and a TLS provider.""" juju.deploy( charm, @@ -36,10 +39,20 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) num_units=NUM_UNITS, trust=True, ) + juju.deploy(glide_runner_charm, app=GLIDE_RUNNER_NAME) juju.deploy(TLS_NAME, channel=TLS_CHANNEL) juju.integrate(f"{APP_NAME}:client-certificates", TLS_NAME) juju.wait( - lambda status: are_agents_idle(status, APP_NAME, idle_period=30, unit_count=NUM_UNITS), + lambda status: are_agents_idle( + status, + APP_NAME, + GLIDE_RUNNER_NAME, + idle_period=30, + unit_count={ + APP_NAME: NUM_UNITS, + GLIDE_RUNNER_NAME: 1, + }, + ), timeout=600, ) From 19e07d234f0c7a0e489156a4054d47b031b1ca58 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 19:48:24 +0000 Subject: [PATCH 255/282] reorder statuses for tests and migrate test_private_key --- src/managers/tls.py | 6 +- tests/integration/tls/test_private_key.py | 68 +++++++++++++++-------- 2 files changed, 48 insertions(+), 26 deletions(-) diff --git a/src/managers/tls.py b/src/managers/tls.py index 59b0512..ca842e3 100644 --- a/src/managers/tls.py +++ b/src/managers/tls.py @@ -438,14 +438,14 @@ def get_statuses(self, scope: Scope, recompute: bool = False) -> list[StatusObje ): status_list.append(TLSStatuses.DISABLING_CLIENT_TLS_FAILED.value) - if self.state.cluster.tls_client_private_key and not self.state.client_tls_relation: - status_list.append(TLSStatuses.PRIVATE_KEY_BUT_NO_TLS.value) - if ( private_key_id := self.state.config.get(TLS_CLIENT_PRIVATE_KEY_CONFIG) ) and self.read_and_validate_private_key(str(private_key_id)) is None: status_list.append(TLSStatuses.PRIVATE_KEY_INVALID.value) + if self.state.cluster.tls_client_private_key and not self.state.client_tls_relation: + status_list.append(TLSStatuses.PRIVATE_KEY_BUT_NO_TLS.value) + if self.state.unit_server.tls_client_state == TLSState.TO_NO_TLS: status_list.append(TLSStatuses.DISABLING_CLIENT_TLS.value) diff --git a/tests/integration/tls/test_private_key.py b/tests/integration/tls/test_private_key.py index 435f202..3d5a820 100644 --- a/tests/integration/tls/test_private_key.py +++ b/tests/integration/tls/test_private_key.py @@ -10,6 +10,7 @@ from statuses import TLSStatuses from tests.integration.helpers import ( APP_NAME, + GLIDE_RUNNER_NAME, IMAGE_RESOURCE, TLS_CERT_FILE, TLS_CHANNEL, @@ -31,7 +32,9 @@ TEST_VALUE = "test_value" -def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) -> None: +def test_build_and_deploy( + charm: str, juju: jubilant.Juju, substrate: Substrate, glide_runner_charm: str +) -> None: """Deploy the charm under test and a TLS provider.""" juju.deploy( charm, @@ -39,10 +42,19 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) num_units=NUM_UNITS, trust=True, ) - + juju.deploy(glide_runner_charm, app=GLIDE_RUNNER_NAME) juju.deploy(TLS_NAME, channel=TLS_CHANNEL) juju.wait( - lambda status: are_agents_idle(status, APP_NAME, idle_period=30, unit_count=NUM_UNITS), + lambda status: are_agents_idle( + status, + APP_NAME, + GLIDE_RUNNER_NAME, + idle_period=30, + unit_count={ + APP_NAME: NUM_UNITS, + GLIDE_RUNNER_NAME: 1, + }, + ), timeout=600, ) @@ -69,7 +81,7 @@ def test_invalid_private_key(juju: jubilant.Juju) -> None: ) -async def test_valid_private_key(juju: jubilant.Juju) -> None: +def test_valid_private_key(juju: jubilant.Juju) -> None: logger.info("Updating user secret with valid private key now") private_key = PrivateKey.generate().raw @@ -98,8 +110,9 @@ async def test_valid_private_key(juju: jubilant.Juju) -> None: logger.info("Check access with TLS enabled") addresses = get_cluster_addresses(juju, APP_NAME) - result = await set_key( - hostnames=addresses, + result = set_key( + juju=juju, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -108,13 +121,17 @@ async def test_valid_private_key(juju: jubilant.Juju) -> None: ) assert result == "OK", "Failed to write data with TLS enabled" - assert await get_key( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=True, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data with TLS enabled" + assert ( + get_key( + juju=juju, + endpoints=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=True, + key=TEST_KEY, + ) + == TEST_VALUE + ), "Failed to read data with TLS enabled" logger.info("Store current certificate before expiration") with open(TLS_KEY_FILE, "r") as key_file: @@ -123,7 +140,7 @@ async def test_valid_private_key(juju: jubilant.Juju) -> None: assert private_key_on_unit == private_key, "Expected user-provided private key to be used" -async def test_private_key_updated(juju: jubilant.Juju) -> None: +def test_private_key_updated(juju: jubilant.Juju) -> None: logger.info("Getting current private key and certificate") with open(TLS_KEY_FILE, "r") as key_file: current_private_key = key_file.read() @@ -148,8 +165,9 @@ async def test_private_key_updated(juju: jubilant.Juju) -> None: logger.info("Check access with TLS enabled") addresses = get_cluster_addresses(juju, APP_NAME) - result = await set_key( - hostnames=addresses, + result = set_key( + juju=juju, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -158,13 +176,17 @@ async def test_private_key_updated(juju: jubilant.Juju) -> None: ) assert result == "OK", "Failed to write data with TLS enabled" - assert await get_key( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=True, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data with TLS enabled" + assert ( + get_key( + juju=juju, + endpoints=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=True, + key=TEST_KEY, + ) + == TEST_VALUE + ), "Failed to read data with TLS enabled" logger.info("Getting and comparing updated private key and certificate") with open(TLS_KEY_FILE, "r") as key_file: From 57ad1fb36d576010b612a73f92be94eed0e6739d Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 20:03:33 +0000 Subject: [PATCH 256/282] migrate certificate rotation --- tests/integration/helpers.py | 1 - .../tls/test_certificate_rotation.py | 170 ++++++++++-------- 2 files changed, 100 insertions(+), 71 deletions(-) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index fd310b1..0c40ad5 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -279,7 +279,6 @@ def get_glide_config( tls_cert = tls_key = tls_ca_cert = None if tls_enabled: - download_client_certificate_from_unit(juju, app_name=app_name) # Read locally stored certificate files with open("client.pem", "rb") as f: tls_cert = f.read() diff --git a/tests/integration/tls/test_certificate_rotation.py b/tests/integration/tls/test_certificate_rotation.py index a94b866..ac71fae 100644 --- a/tests/integration/tls/test_certificate_rotation.py +++ b/tests/integration/tls/test_certificate_rotation.py @@ -5,12 +5,12 @@ from time import sleep import jubilant -import pytest from literals import CharmUsers, Substrate from statuses import TLSStatuses from tests.integration.helpers import ( APP_NAME, + GLIDE_RUNNER_NAME, IMAGE_RESOURCE, TLS_CA_FILE, TLS_CERT_FILE, @@ -48,7 +48,9 @@ def _prepare_units_for_ca_expiration_test(juju: jubilant.Juju) -> None: ) -def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) -> None: +def test_build_and_deploy( + charm: str, juju: jubilant.Juju, substrate: Substrate, glide_runner_charm: str +) -> None: """Deploy the charm under test and a TLS provider.""" juju.deploy( charm, @@ -56,17 +58,27 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) num_units=NUM_UNITS, trust=True, ) + juju.deploy(glide_runner_charm, app=GLIDE_RUNNER_NAME) tls_config = {"certificate-validity": "5m", "ca-common-name": "valkey"} juju.deploy(TLS_NAME, channel=TLS_CHANNEL, config=tls_config) juju.integrate(f"{APP_NAME}:client-certificates", TLS_NAME) juju.wait( - lambda status: are_agents_idle(status, APP_NAME, idle_period=30, unit_count=NUM_UNITS), + lambda status: are_agents_idle( + status, + APP_NAME, + GLIDE_RUNNER_NAME, + idle_period=30, + unit_count={ + APP_NAME: NUM_UNITS, + GLIDE_RUNNER_NAME: 1, + }, + ), timeout=600, ) -async def test_certificate_expiration(juju: jubilant.Juju) -> None: +def test_certificate_expiration(juju: jubilant.Juju) -> None: """Test the TLS certificate expiration and renewal on a running cluster.""" _prepare_units_for_ca_expiration_test(juju) @@ -75,8 +87,9 @@ async def test_certificate_expiration(juju: jubilant.Juju) -> None: logger.info("Check access with TLS enabled") addresses = get_cluster_addresses(juju, APP_NAME) - result = await set_key( - hostnames=addresses, + result = set_key( + juju=juju, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -85,13 +98,17 @@ async def test_certificate_expiration(juju: jubilant.Juju) -> None: ) assert result == "OK", "Failed to write data with TLS enabled" - assert await get_key( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=True, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data with TLS enabled" + assert ( + get_key( + juju=juju, + endpoints=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=True, + key=TEST_KEY, + ) + == TEST_VALUE + ), "Failed to read data with TLS enabled" logger.info("Store current certificate before expiration") with open(TLS_CERT_FILE, "r") as file: @@ -102,15 +119,12 @@ async def test_certificate_expiration(juju: jubilant.Juju) -> None: sleep(CERTIFICATE_EXPIRY_TIME) logger.info("Check access with previous certificate fails after expiration") - with pytest.raises(Exception) as exc_info: - await auth_test( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=True, - ) - assert "Connection error" in str(exc_info.value), ( - "Access with expired certificate did not fail as expected" + assert not auth_test( + juju=juju, + cluster_addresses=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=True, ) logger.info("Store new certificate after rotation") @@ -124,8 +138,9 @@ async def test_certificate_expiration(juju: jubilant.Juju) -> None: logger.info("Check access with updated certificate") download_client_certificate_from_unit(juju, APP_NAME) - result = await set_key( - hostnames=addresses, + result = set_key( + juju=juju, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -134,13 +149,17 @@ async def test_certificate_expiration(juju: jubilant.Juju) -> None: ) assert result == "OK", "Failed to write data with updated certificate" - assert await get_key( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=True, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data with updated certificate" + assert ( + get_key( + juju=juju, + endpoints=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=True, + key=TEST_KEY, + ) + == TEST_VALUE + ), "Failed to read data with updated certificate" juju.wait( lambda status: does_status_match( @@ -152,7 +171,7 @@ async def test_certificate_expiration(juju: jubilant.Juju) -> None: ) -async def test_ca_rotation_by_config_change(juju: jubilant.Juju) -> None: +def test_ca_rotation_by_config_change(juju: jubilant.Juju) -> None: """Test the CA rotation. The CA certificate should be rotated and the cluster should still be accessible. @@ -189,8 +208,9 @@ async def test_ca_rotation_by_config_change(juju: jubilant.Juju) -> None: logger.info("Check access with updated certificate") addresses = get_cluster_addresses(juju, APP_NAME) - result = await set_key( - hostnames=addresses, + result = set_key( + juju=juju, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -199,16 +219,20 @@ async def test_ca_rotation_by_config_change(juju: jubilant.Juju) -> None: ) assert result == "OK", "Failed to write data with updated certificate" - assert await get_key( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=True, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data with updated certificate" + assert ( + get_key( + juju=juju, + endpoints=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=True, + key=TEST_KEY, + ) + == TEST_VALUE + ), "Failed to read data with updated certificate" -async def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: +def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: """Test the CA rotation. The CA certificate should be rotated and the cluster should still be accessible. @@ -254,8 +278,9 @@ async def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: logger.info("Check access with current TLS certificate") addresses = get_cluster_addresses(juju, APP_NAME) - result = await set_key( - hostnames=addresses, + result = set_key( + juju=juju, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -264,13 +289,17 @@ async def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: ) assert result == "OK", "Failed to write data with TLS enabled" - assert await get_key( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=True, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data with TLS enabled" + assert ( + get_key( + juju=juju, + endpoints=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=True, + key=TEST_KEY, + ) + == TEST_VALUE + ), "Failed to read data with TLS enabled" logger.info("Waiting for CA certificate to expire") sleep(CA_EXPIRY_TIME) @@ -280,17 +309,13 @@ async def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: ) logger.info("Check access with previous certificate fails after expiration") - with pytest.raises(Exception) as exc_info: - await auth_test( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=True, - ) - assert "Connection error" in str(exc_info.value), ( - "Access with expired certificate did not fail as expected" + assert not auth_test( + juju=juju, + cluster_addresses=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=True, ) - logger.info("Store new certificate after rotation") download_client_certificate_from_unit(juju, APP_NAME) with open(TLS_CA_FILE, "r") as ca_file: @@ -304,8 +329,9 @@ async def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: logger.info("Check access with updated certificate") addresses = get_cluster_addresses(juju, APP_NAME) - result = await set_key( - hostnames=addresses, + result = set_key( + juju=juju, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -314,10 +340,14 @@ async def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: ) assert result == "OK", "Failed to write data with updated certificate" - assert await get_key( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN.value, - password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), - tls_enabled=True, - key=TEST_KEY, - ) == bytes(TEST_VALUE, "utf-8"), "Failed to read data with updated certificate" + assert ( + get_key( + juju=juju, + endpoints=addresses, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + tls_enabled=True, + key=TEST_KEY, + ) + == TEST_VALUE + ), "Failed to read data with updated certificate" From 3c3556f3f3dda4e9b208d2acbad2fd9103f4e36e Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 21:06:21 +0000 Subject: [PATCH 257/282] fix lint --- tests/integration/cw_helpers.py | 1 + 1 file changed, 1 insertion(+) diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index 7dd2dd4..e00c303 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -213,6 +213,7 @@ def assert_continuous_writes_consistent( username: Valkey username. password: Valkey password. last_written_value: Last integer successfully written, from ``stop_continuous_writes``. + tls_enabled: Whether to use TLS when connecting to Valkey. """ reference: list[int] | None = None From 2398c82d1be8797ddaa321de0c08c19c7880352b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 21:22:24 +0000 Subject: [PATCH 258/282] downgrade waiting for valkey from running status --- src/events/base_events.py | 9 +++------ src/statuses.py | 1 - 2 files changed, 3 insertions(+), 7 deletions(-) diff --git a/src/events/base_events.py b/src/events/base_events.py index 8020ba4..e2e1df0 100644 --- a/src/events/base_events.py +++ b/src/events/base_events.py @@ -33,7 +33,7 @@ Substrate, TLSState, ) -from statuses import CharmStatuses, ClusterStatuses, ScaleDownStatuses, StartStatuses +from statuses import CharmStatuses, ClusterStatuses, ScaleDownStatuses if TYPE_CHECKING: from charm import ValkeyCharm @@ -197,11 +197,8 @@ def _on_start(self, event: ops.StartEvent) -> None: event.defer() return - self.charm.status.set_running_status( - StartStatuses.SERVICE_STARTING.value, - scope="unit", - statuses_state=self.charm.state.statuses, - component_name=self.charm.cluster_manager.name, + self.charm.state.unit_server.update( + {"start_state": StartState.STARTING_WAITING_VALKEY.value} ) self.unit_fully_started.emit( is_primary=primary_endpoint diff --git a/src/statuses.py b/src/statuses.py index ef1c3f1..6c6edd3 100644 --- a/src/statuses.py +++ b/src/statuses.py @@ -63,7 +63,6 @@ class StartStatuses(Enum): SERVICE_STARTING = StatusObject( status="maintenance", message="Waiting for Valkey to start...", - running="async", ) WAITING_FOR_SENTINEL_DISCOVERY = StatusObject( status="maintenance", From c229872fe5c770bff5636a4e95d287db1f80a221 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 14 Apr 2026 21:26:00 +0000 Subject: [PATCH 259/282] migrate certificate options --- .../tls/test_certificate_options.py | 21 ++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/tests/integration/tls/test_certificate_options.py b/tests/integration/tls/test_certificate_options.py index 9d9776b..7cff4d3 100644 --- a/tests/integration/tls/test_certificate_options.py +++ b/tests/integration/tls/test_certificate_options.py @@ -13,6 +13,7 @@ from statuses import TLSStatuses from tests.integration.helpers import ( APP_NAME, + GLIDE_RUNNER_NAME, IMAGE_RESOURCE, TLS_CERT_FILE, TLS_CHANNEL, @@ -34,7 +35,9 @@ VAULT_NAME = "vault" -def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) -> None: +def test_build_and_deploy( + charm: str, juju: jubilant.Juju, substrate: Substrate, glide_runner_charm +) -> None: """Deploy the charm under test and a TLS provider.""" logger.info("Installing vault cli client") subprocess.run( @@ -47,6 +50,7 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) num_units=NUM_UNITS, trust=True, ) + juju.deploy(glide_runner_charm, app=GLIDE_RUNNER_NAME) juju.deploy(TLS_NAME, channel=TLS_CHANNEL) juju.deploy( "vault-k8s" if substrate == Substrate.K8S else "vault", @@ -60,7 +64,13 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) ) juju.integrate(f"{APP_NAME}:client-certificates", TLS_NAME) juju.wait( - lambda status: are_agents_idle(status, APP_NAME, idle_period=30, unit_count=NUM_UNITS), + lambda status: are_agents_idle( + status, + APP_NAME, + GLIDE_RUNNER_NAME, + idle_period=30, + unit_count={APP_NAME: NUM_UNITS, GLIDE_RUNNER_NAME: 1}, + ), timeout=600, ) juju.wait(lambda status: jubilant.all_blocked(status, VAULT_NAME)) @@ -240,7 +250,7 @@ def test_initialize_vault(juju: jubilant.Juju, substrate: Substrate) -> None: juju.wait(lambda status: are_apps_active_and_agents_idle(status, VAULT_NAME)) -async def test_certificate_denied(juju: jubilant.Juju) -> None: +def test_certificate_denied(juju: jubilant.Juju) -> None: """Process denied certificate request.""" logger.info("Integrate %s with %s for Intermediate CA", VAULT_NAME, TLS_NAME) juju.integrate(f"{VAULT_NAME}:tls-certificates-pki", TLS_NAME) @@ -260,8 +270,9 @@ async def test_certificate_denied(juju: jubilant.Juju) -> None: logger.info("Ensure access without TLS is still possible") addresses = get_cluster_addresses(juju, APP_NAME) - result = await set_key( - hostnames=addresses, + result = set_key( + juju=juju, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=False, From 64de12bbf65323a1e6b5064e0299ccfd48ec97d3 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 15 Apr 2026 09:08:20 +0000 Subject: [PATCH 260/282] use endpoints where needed --- tests/integration/helpers.py | 40 ++++++++++++++----- tests/integration/test_charm.py | 24 ++++++----- .../tls/test_certificate_rotation.py | 34 ++++++++-------- tests/integration/tls/test_private_key.py | 14 +++---- tests/integration/tls/test_tls.py | 24 +++++------ 5 files changed, 79 insertions(+), 57 deletions(-) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 0c40ad5..4e54c38 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -249,6 +249,27 @@ def get_cluster_addresses(juju: jubilant.Juju, app_name: str) -> list[str]: return [unit.public_address for unit in status.get_units(app_name).values()] +def get_cluster_endpoints(juju: jubilant.Juju, app_name: str) -> list[str]: + """Get the addresses of all units in the Valkey application. + + Args: + juju: The Juju client instance. + app_name: The name of the Valkey application. + + Returns: + A list of addresses for all units in the Valkey application. + """ + model_info = juju.show_model() + + if model_info.type == "kubernetes": + return [ + unit_name.replace("/", "-") + "." + app_name + "-endpoints" + for unit_name in juju.status().get_units(app_name) + ] + + return get_cluster_addresses(juju, app_name) + + def get_secret_by_label(juju: jubilant.Juju, label: str) -> dict[str, str]: for secret in juju.secrets(): if label == secret.label: @@ -261,16 +282,15 @@ def get_secret_by_label(juju: jubilant.Juju, label: str) -> dict[str, str]: def get_glide_config( juju: jubilant.Juju, app_name: str, - cluster_addresses: list[str] | None = None, + endpoints: list[str] | None = None, username: str | None = CharmUsers.VALKEY_ADMIN.value, password: str | None = None, tls_enabled: bool = False, ) -> GlideClientConfiguration: """Construct a GlideClientConfiguration from Juju model information and secrets.""" - cluster_addresses = cluster_addresses or get_cluster_addresses(juju, app_name) + endpoints = endpoints or get_cluster_endpoints(juju, app_name) addresses = [ - NodeAddress(host=host, port=TLS_PORT if tls_enabled else CLIENT_PORT) - for host in cluster_addresses + NodeAddress(host=host, port=TLS_PORT if tls_enabled else CLIENT_PORT) for host in endpoints ] credentials = None @@ -598,7 +618,7 @@ def set_key( glide_config = get_glide_config( juju=juju, app_name=APP_NAME, - cluster_addresses=endpoints, + endpoints=endpoints, username=username, password=password, tls_enabled=tls_enabled, @@ -634,7 +654,7 @@ def get_key( glide_config = get_glide_config( juju=juju, app_name=APP_NAME, - cluster_addresses=endpoints, + endpoints=endpoints, username=username, password=password, tls_enabled=tls_enabled, @@ -700,7 +720,7 @@ def ping_cluster( glide_config = get_glide_config( juju=juju, app_name=app_name, - cluster_addresses=endpoints, + endpoints=endpoints, username=username, password=password, tls_enabled=tls_enabled, @@ -743,7 +763,7 @@ class WrongPassError(Exception): def auth_test( juju: jubilant.Juju, - cluster_addresses: list[str] | None = None, + endpoints: list[str] | None = None, username: str | None = None, password: str | None = None, tls_enabled: bool = False, @@ -753,7 +773,7 @@ def auth_test( Args: juju: An instance of Jubilant's Juju class on which to run Juju commands - cluster_addresses: List of hostnames of the Valkey cluster nodes. If None, will be retrieved from Juju. + endpoints: List of endpoints of the Valkey cluster nodes. If None, will be retrieved from Juju. username: The username for authentication. password: The password for authentication. tls_enabled: Whether TLS certificates are needed. @@ -764,7 +784,7 @@ def auth_test( """ glide_config = get_glide_config( juju=juju, - cluster_addresses=cluster_addresses, + endpoints=endpoints, app_name=APP_NAME, username=username, password=password, diff --git a/tests/integration/test_charm.py b/tests/integration/test_charm.py index 625c646..19766a5 100644 --- a/tests/integration/test_charm.py +++ b/tests/integration/test_charm.py @@ -25,6 +25,7 @@ exec_valkey_cli, fast_forward, get_cluster_addresses, + get_cluster_endpoints, get_password, get_secret_by_label, ping, @@ -64,10 +65,11 @@ def test_build_and_deploy( def test_authentication(juju: jubilant.Juju) -> None: """Assert that we can authenticate to valkey.""" addresses = get_cluster_addresses(juju, APP_NAME) + endpoints = get_cluster_endpoints(juju, APP_NAME) # try without authentication with pytest.raises(NoAuthError): - auth_test(juju, cluster_addresses=addresses, username=None, password=None) + auth_test(juju, endpoints=endpoints, username=None, password=None) # Authenticate with internal user password = get_password(juju, user=CharmUsers.VALKEY_ADMIN) @@ -97,25 +99,25 @@ def test_update_admin_password(juju: jubilant.Juju) -> None: new_password_secret = get_password(juju, user=CharmUsers.VALKEY_ADMIN) assert new_password_secret == new_password, "Admin password not updated in secret" - addresses = get_cluster_addresses(juju, APP_NAME) + endpoints = get_cluster_endpoints(juju, APP_NAME) # confirm old password no longer works with pytest.raises(WrongPassError): auth_test( juju, - cluster_addresses=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=old_password, ) assert ( - ping_cluster(juju, APP_NAME, addresses, CharmUsers.VALKEY_ADMIN.value, new_password) + ping_cluster(juju, APP_NAME, endpoints, CharmUsers.VALKEY_ADMIN.value, new_password) is True ), "Failed to authenticate with new admin password" assert ( set_key( juju, - addresses, + endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=new_password, key=TEST_KEY, @@ -183,7 +185,7 @@ def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None: ping_cluster( juju=juju, app_name=APP_NAME, - endpoints=get_cluster_addresses(juju, APP_NAME), + endpoints=get_cluster_endpoints(juju, APP_NAME), username=CharmUsers.VALKEY_ADMIN.value, password=new_password, ) @@ -193,7 +195,7 @@ def test_update_admin_password_wrong_username(juju: jubilant.Juju) -> None: assert ( set_key( juju=juju, - endpoints=get_cluster_addresses(juju, APP_NAME), + endpoints=get_cluster_endpoints(juju, APP_NAME), username=CharmUsers.VALKEY_ADMIN.value, password=new_password, key=TEST_KEY, @@ -242,11 +244,11 @@ def test_user_secret_permissions(juju: jubilant.Juju) -> None: ) # perform read operation with the updated password - addresses = get_cluster_addresses(juju, APP_NAME) + endpoints = get_cluster_endpoints(juju, APP_NAME) assert ping_cluster( juju=juju, app_name=APP_NAME, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=new_password, ), "Failed to authenticate with new admin password" @@ -254,7 +256,7 @@ def test_user_secret_permissions(juju: jubilant.Juju) -> None: assert ( set_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=new_password, key=TEST_KEY, @@ -263,7 +265,7 @@ def test_user_secret_permissions(juju: jubilant.Juju) -> None: == "OK" ), "Failed to write data after admin password update" - for address in addresses: + for address in get_cluster_addresses(juju, APP_NAME): assert ( ping(address, username=CharmUsers.VALKEY_ADMIN.value, password=new_password) is True ), ( diff --git a/tests/integration/tls/test_certificate_rotation.py b/tests/integration/tls/test_certificate_rotation.py index ac71fae..7115544 100644 --- a/tests/integration/tls/test_certificate_rotation.py +++ b/tests/integration/tls/test_certificate_rotation.py @@ -20,7 +20,7 @@ auth_test, does_status_match, download_client_certificate_from_unit, - get_cluster_addresses, + get_cluster_endpoints, get_key, get_password, set_key, @@ -86,10 +86,10 @@ def test_certificate_expiration(juju: jubilant.Juju) -> None: download_client_certificate_from_unit(juju, APP_NAME) logger.info("Check access with TLS enabled") - addresses = get_cluster_addresses(juju, APP_NAME) + endpoints = get_cluster_endpoints(juju, APP_NAME) result = set_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -101,7 +101,7 @@ def test_certificate_expiration(juju: jubilant.Juju) -> None: assert ( get_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -121,7 +121,7 @@ def test_certificate_expiration(juju: jubilant.Juju) -> None: logger.info("Check access with previous certificate fails after expiration") assert not auth_test( juju=juju, - cluster_addresses=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -140,7 +140,7 @@ def test_certificate_expiration(juju: jubilant.Juju) -> None: download_client_certificate_from_unit(juju, APP_NAME) result = set_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -152,7 +152,7 @@ def test_certificate_expiration(juju: jubilant.Juju) -> None: assert ( get_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -207,10 +207,10 @@ def test_ca_rotation_by_config_change(juju: jubilant.Juju) -> None: assert old_certificate != new_certificate, "Certificate was not updated" logger.info("Check access with updated certificate") - addresses = get_cluster_addresses(juju, APP_NAME) + endpoints = get_cluster_endpoints(juju, APP_NAME) result = set_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -222,7 +222,7 @@ def test_ca_rotation_by_config_change(juju: jubilant.Juju) -> None: assert ( get_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -277,10 +277,10 @@ def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: assert old_certificate, "Failed to get current certificate" logger.info("Check access with current TLS certificate") - addresses = get_cluster_addresses(juju, APP_NAME) + endpoints = get_cluster_endpoints(juju, APP_NAME) result = set_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -292,7 +292,7 @@ def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: assert ( get_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -311,7 +311,7 @@ def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: logger.info("Check access with previous certificate fails after expiration") assert not auth_test( juju=juju, - cluster_addresses=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -328,10 +328,10 @@ def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: assert old_certificate != new_certificate, "Certificate was not updated" logger.info("Check access with updated certificate") - addresses = get_cluster_addresses(juju, APP_NAME) + endpoints = get_cluster_endpoints(juju, APP_NAME) result = set_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -343,7 +343,7 @@ def test_ca_rotation_by_expiration(juju: jubilant.Juju) -> None: assert ( get_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, diff --git a/tests/integration/tls/test_private_key.py b/tests/integration/tls/test_private_key.py index 3d5a820..fcf9ab7 100644 --- a/tests/integration/tls/test_private_key.py +++ b/tests/integration/tls/test_private_key.py @@ -19,7 +19,7 @@ are_agents_idle, does_status_match, download_client_certificate_from_unit, - get_cluster_addresses, + get_cluster_endpoints, get_key, get_password, set_key, @@ -109,10 +109,10 @@ def test_valid_private_key(juju: jubilant.Juju) -> None: download_client_certificate_from_unit(juju, APP_NAME) logger.info("Check access with TLS enabled") - addresses = get_cluster_addresses(juju, APP_NAME) + endpoints = get_cluster_endpoints(juju, APP_NAME) result = set_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -124,7 +124,7 @@ def test_valid_private_key(juju: jubilant.Juju) -> None: assert ( get_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -164,10 +164,10 @@ def test_private_key_updated(juju: jubilant.Juju) -> None: download_client_certificate_from_unit(juju, APP_NAME) logger.info("Check access with TLS enabled") - addresses = get_cluster_addresses(juju, APP_NAME) + endpoints = get_cluster_endpoints(juju, APP_NAME) result = set_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -179,7 +179,7 @@ def test_private_key_updated(juju: jubilant.Juju) -> None: assert ( get_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, diff --git a/tests/integration/tls/test_tls.py b/tests/integration/tls/test_tls.py index 9f6cd62..e40ef82 100644 --- a/tests/integration/tls/test_tls.py +++ b/tests/integration/tls/test_tls.py @@ -16,7 +16,7 @@ are_apps_active_and_agents_idle, auth_test, download_client_certificate_from_unit, - get_cluster_addresses, + get_cluster_endpoints, get_key, get_password, set_key, @@ -62,11 +62,11 @@ def test_tls_enabled(juju: jubilant.Juju) -> None: logger.info("Downloading TLS certificates from deployed app.") download_client_certificate_from_unit(juju, APP_NAME) - addresses = get_cluster_addresses(juju, APP_NAME) + endpoints = get_cluster_endpoints(juju, APP_NAME) logger.info("Check access with TLS enabled") result = set_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -78,7 +78,7 @@ def test_tls_enabled(juju: jubilant.Juju) -> None: assert ( get_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -89,7 +89,7 @@ def test_tls_enabled(juju: jubilant.Juju) -> None: logger.info("Check access without certs fails when TLS enabled") - assert not auth_test(juju, addresses, username=None, password=None) + assert not auth_test(juju, endpoints, username=None, password=None) def test_scale_up_with_tls_enabled(juju: jubilant.Juju) -> None: @@ -114,11 +114,11 @@ def test_disable_tls(juju: jubilant.Juju) -> None: timeout=600, ) - addresses = get_cluster_addresses(juju, APP_NAME) + endpoints = get_cluster_endpoints(juju, APP_NAME) logger.info("Check access with TLS disabled") result = set_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=False, @@ -130,7 +130,7 @@ def test_disable_tls(juju: jubilant.Juju) -> None: assert ( get_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=False, @@ -152,11 +152,11 @@ def test_enable_tls(juju: jubilant.Juju) -> None: logger.info("Downloading TLS certificates from deployed app.") download_client_certificate_from_unit(juju, APP_NAME) - addresses = get_cluster_addresses(juju, APP_NAME) + endpoints = get_cluster_endpoints(juju, APP_NAME) logger.info("Check access with TLS enabled") result = set_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -168,7 +168,7 @@ def test_enable_tls(juju: jubilant.Juju) -> None: assert ( get_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=True, @@ -178,4 +178,4 @@ def test_enable_tls(juju: jubilant.Juju) -> None: ), "Failed to read data with TLS enabled" logger.info("Check access without certs fails when TLS enabled") - assert not auth_test(juju, addresses, username=None, password=None) + assert not auth_test(juju, endpoints, username=None, password=None) From 27f0e7d887871ea71cfc0a7ca8542b08a776385b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 15 Apr 2026 09:54:14 +0000 Subject: [PATCH 261/282] fix certiicates options --- tests/integration/tls/test_certificate_options.py | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/tests/integration/tls/test_certificate_options.py b/tests/integration/tls/test_certificate_options.py index 7cff4d3..b43e8f7 100644 --- a/tests/integration/tls/test_certificate_options.py +++ b/tests/integration/tls/test_certificate_options.py @@ -22,7 +22,7 @@ are_apps_active_and_agents_idle, does_status_match, download_client_certificate_from_unit, - get_cluster_addresses, + get_cluster_endpoints, get_password, set_key, ) @@ -269,10 +269,10 @@ def test_certificate_denied(juju: jubilant.Juju) -> None: ) logger.info("Ensure access without TLS is still possible") - addresses = get_cluster_addresses(juju, APP_NAME) + endpoints = get_cluster_endpoints(juju, APP_NAME) result = set_key( juju=juju, - endpoints=addresses, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), tls_enabled=False, From 2bdd6c9231335d326013e7f21379f72784375d53 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 15 Apr 2026 11:35:26 +0000 Subject: [PATCH 262/282] add seed data action to requirer charm --- .../clients/requirer-charm/charmcraft.yaml | 14 +++++++++ .../clients/requirer-charm/src/charm.py | 22 ++++++++++++++ .../clients/requirer-charm/src/client.py | 29 +++++++++++++++++++ 3 files changed, 65 insertions(+) diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index 6a59079..b2d8fb3 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -166,6 +166,20 @@ actions: type: boolean default: false + seed-data: + description: > + Seed Valkey with random 1 KB values using the relation-provided credentials. + Keys are written in batches of 5000 using MSET and named "". + params: + target-gb: + description: Target amount of data to seed in GB (default 1.0) + type: number + default: 1.0 + key-prefix: + description: Prefix for generated keys (default "seed:key:") + type: string + default: "seed:key:" + config: options: data-interfaces-version: diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index db3e192..18f78a1 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -124,6 +124,7 @@ def __init__(self, framework: ops.Framework): framework.observe(self.on.get_action, self._on_get_action) framework.observe(self.on.execute_action, self._on_execute_action) framework.observe(self.on.get_credentials_action, self._on_get_credentials_action) + framework.observe(self.on.seed_data_action, self._on_seed_data_action) framework.observe( self.on.start_continuous_writes_action, self._on_start_continuous_writes_action ) @@ -413,6 +414,27 @@ def _on_get_credentials_action(self, event: ops.ActionEvent) -> None: } ) + def _on_seed_data_action(self, event: ops.ActionEvent) -> None: + """Handle seed-data action.""" + if not self._use_config and not self.valkey_relation: + event.fail( + "The action can be run only after a relation is created or glide-config is set." + ) + event.set_results({"ok": False}) + return + + target_gb = float(event.params.get("target-gb", 1.0)) + key_prefix = str(event.params.get("key-prefix", "seed:key:")) + + user, _ = next(iter(self.credentials.items())) + client = self.get_valkey_client(user) + try: + keys_added = asyncio.run(client.seed_data(target_gb=target_gb, key_prefix=key_prefix)) + event.set_results({"ok": True, "keys-added": keys_added}) + except Exception as e: + event.fail(f"Failed to seed data: {e}") + logger.error("Failed to seed data: %s", e) + def _on_start_continuous_writes_action(self, event: ops.ActionEvent) -> None: """Handle start-continuous-writes action.""" if not self._use_config and not self.valkey_relation: diff --git a/tests/integration/clients/requirer-charm/src/client.py b/tests/integration/clients/requirer-charm/src/client.py index 0c36b05..9909e70 100644 --- a/tests/integration/clients/requirer-charm/src/client.py +++ b/tests/integration/clients/requirer-charm/src/client.py @@ -5,6 +5,7 @@ import json import logging +import os from glide import ( AdvancedGlideClientConfiguration, @@ -81,6 +82,34 @@ async def get_key(self, key: str) -> str: finally: await client.close() + async def seed_data( + self, target_gb: float = 1.0, key_prefix: str = "seed:key:" + ) -> int: + """Seed Valkey with random data and return the number of keys written.""" + value_size_bytes = 1024 + batch_size = 5000 + total_keys = int(target_gb * 1024 * 1024 * 1024) // value_size_bytes + + random_data = os.urandom(value_size_bytes).hex()[:value_size_bytes] + keys_added = 0 + + client = await self.create_client() + try: + while keys_added < total_keys: + batch_end = min(keys_added + batch_size, total_keys) + data = { + f"{key_prefix}{i}": random_data for i in range(keys_added, batch_end) + } + result = await client.mset(data) + if result != "OK": + raise RuntimeError(f"mset failed: {result}") + keys_added = batch_end + logger.info("Seeding progress: %d/%d keys", keys_added, total_keys) + finally: + await client.close() + + return keys_added + async def execute_command(self, args: list[str]) -> str: """Execute an arbitrary Valkey command and return the result as a string.""" client = await self.create_client() From 31a2ac9afe2146937ddad785ae7198858cb7d026 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 15 Apr 2026 11:55:54 +0000 Subject: [PATCH 263/282] migrate test_scaling --- tests/integration/cw_helpers.py | 10 ++--- tests/integration/ha/test_scaling.py | 62 +++++++++++++++++----------- tests/integration/helpers.py | 59 -------------------------- 3 files changed, 43 insertions(+), 88 deletions(-) diff --git a/tests/integration/cw_helpers.py b/tests/integration/cw_helpers.py index e00c303..d6189c6 100644 --- a/tests/integration/cw_helpers.py +++ b/tests/integration/cw_helpers.py @@ -11,9 +11,9 @@ import jubilant from literals import CLIENT_PORT, TLS_PORT, Substrate -from tests.integration.conftest import GLIDE_RUNNER_NAME from tests.integration.helpers import ( APP_NAME, + GLIDE_RUNNER_NAME, TLS_CA_FILE, TLS_CERT_FILE, TLS_KEY_FILE, @@ -196,7 +196,7 @@ def clear_continuous_writes(juju: jubilant.Juju, unit: str) -> None: def assert_continuous_writes_consistent( - hostnames: list[str], + endpoints: list[str], username: str, password: str, last_written_value: int, @@ -209,7 +209,7 @@ def assert_continuous_writes_consistent( - Every replica holds an identical copy of the list. Args: - hostnames: List of Valkey hostnames to check. + endpoints: List of Valkey endpoints to check. username: Valkey username. password: Valkey password. last_written_value: Last integer successfully written, from ``stop_continuous_writes``. @@ -217,7 +217,7 @@ def assert_continuous_writes_consistent( """ reference: list[int] | None = None - for endpoint in hostnames: + for endpoint in endpoints: current_values: list[int] = json.loads( exec_valkey_cli( endpoint, @@ -245,6 +245,6 @@ def assert_continuous_writes_consistent( logger.info( "Consistency check passed across %d endpoints (list len=%d).", - len(hostnames), + len(endpoints), len(reference or []), ) diff --git a/tests/integration/ha/test_scaling.py b/tests/integration/ha/test_scaling.py index 7f104a8..226a725 100644 --- a/tests/integration/ha/test_scaling.py +++ b/tests/integration/ha/test_scaling.py @@ -1,8 +1,8 @@ #!/usr/bin/env python3 # Copyright 2026 Canonical Ltd. # See LICENSE file for licensing details. -import asyncio import logging +from time import sleep import jubilant import pytest @@ -17,6 +17,7 @@ ) from tests.integration.helpers import ( APP_NAME, + GLIDE_RUNNER_NAME, IMAGE_RESOURCE, are_apps_active_and_agents_idle, existing_app, @@ -26,7 +27,6 @@ get_primary_ip, get_quorum, remove_number_units, - seed_valkey, ) logger = logging.getLogger(__name__) @@ -34,9 +34,12 @@ NUM_UNITS = 3 TEST_KEY = "test_key" TEST_VALUE = "test_value" +SEED_KEY_PREFIX = "seed:key:" -def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) -> None: +def test_build_and_deploy( + charm: str, juju: jubilant.Juju, substrate: Substrate, glide_runner_charm +) -> None: """Build the charm-under-test and deploy it with three units.""" if existing_app(juju): return @@ -47,8 +50,11 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) num_units=1, trust=True, ) + juju.deploy(glide_runner_charm, app=GLIDE_RUNNER_NAME) juju.wait( - lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, GLIDE_RUNNER_NAME, idle_period=30 + ), timeout=600, ) @@ -57,12 +63,22 @@ def test_build_and_deploy(charm: str, juju: jubilant.Juju, substrate: Substrate) ) -async def test_seed_data(juju: jubilant.Juju) -> None: +def test_seed_data(juju: jubilant.Juju, substrate: Substrate) -> None: """Seed some data to the cluster.""" - await seed_valkey(juju, target_gb=1) + configure_cw_runner(juju, substrate=substrate) + task = juju.run( + f"{GLIDE_RUNNER_NAME}/leader", + "seed-data", + params={ + "target-gb": 1.0, + "key-prefix": SEED_KEY_PREFIX, + }, + ) + if task.status != "completed": + logger.error(f"Data seeding failed: {task.results}") -async def test_check_quorum(juju: jubilant.Juju) -> None: +def test_check_quorum(juju: jubilant.Juju) -> None: """Check quorum value.""" app_name = existing_app(juju) or APP_NAME init_units_count = len(juju.status().apps[app_name].units) @@ -71,7 +87,7 @@ async def test_check_quorum(juju: jubilant.Juju) -> None: ) -async def test_scale_up(juju: jubilant.Juju, glide_runner, substrate: Substrate) -> None: +def test_scale_up(juju: jubilant.Juju, glide_runner, substrate: Substrate) -> None: """Make sure new units are added to the valkey downtime.""" app_name = existing_app(juju) or APP_NAME init_units_count = len(juju.status().apps[app_name].units) @@ -108,16 +124,14 @@ async def test_scale_up(juju: jubilant.Juju, glide_runner, substrate: Substrate) logger.info("Stopping continuous writes after scale up test.") cw_stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( - hostnames=addresses, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), last_written_value=cw_stats.last_written_value, ) -async def test_scale_down_one_unit( - juju: jubilant.Juju, substrate: Substrate, glide_runner -) -> None: +def test_scale_down_one_unit(juju: jubilant.Juju, substrate: Substrate, glide_runner) -> None: """Make sure scale down operations complete successfully.""" app_name = existing_app(juju) or APP_NAME init_units_count = len(juju.status().apps[app_name].units) @@ -139,7 +153,7 @@ async def test_scale_down_one_unit( configure_cw_runner(juju, valkey_app=app_name, substrate=substrate) start_continuous_writes(juju, clear=True) - await asyncio.sleep(10) # let the continuous writes write some data + sleep(10) # let the continuous writes write some data # scale down remove_number_units(juju, app_name, num_units=1, substrate=substrate) @@ -171,14 +185,14 @@ async def test_scale_down_one_unit( logger.info("Stopping continuous writes after scale down test.") cw_stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( - hostnames=get_cluster_addresses(juju, app_name), + endpoints=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), last_written_value=cw_stats.last_written_value, ) -async def test_scale_down_multiple_units( +def test_scale_down_multiple_units( juju: jubilant.Juju, substrate: Substrate, glide_runner ) -> None: """Make sure multiple scale down operations complete successfully.""" @@ -202,7 +216,7 @@ async def test_scale_down_multiple_units( configure_cw_runner(juju, valkey_app=app_name, substrate=substrate) start_continuous_writes(juju, clear=True) - await asyncio.sleep(10) # let the continuous writes write some data + sleep(10) # let the continuous writes write some data # scale down multiple units remove_number_units(juju, app_name, num_units=2, substrate=substrate) @@ -237,14 +251,14 @@ async def test_scale_down_multiple_units( cw_stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( - hostnames=get_cluster_addresses(juju, app_name), + endpoints=get_cluster_addresses(juju, app_name), username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), last_written_value=cw_stats.last_written_value, ) -async def test_scale_down_to_zero_and_back_up( +def test_scale_down_to_zero_and_back_up( juju: jubilant.Juju, substrate: Substrate, glide_runner ) -> None: """Make sure that removing all units and then adding them again works.""" @@ -275,21 +289,21 @@ async def test_scale_down_to_zero_and_back_up( configure_cw_runner(juju, valkey_app=app_name, substrate=substrate) start_continuous_writes(juju, clear=True) - await asyncio.sleep(10) # let the continuous writes write some data + sleep(10) # let the continuous writes write some data assert_continuous_writes_increasing(juju) logger.info("Stopping continuous writes after scale up test.") cw_stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( - hostnames=addresses, + endpoints=addresses, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), last_written_value=cw_stats.last_written_value, ) -async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, glide_runner) -> None: +def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, glide_runner) -> None: """Make sure that removing the primary unit triggers a new primary to be elected and the cluster remains available.""" if substrate == Substrate.K8S: pytest.skip("Primary unit can only targeted on VM") @@ -308,7 +322,7 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, gli configure_cw_runner(juju, valkey_app=app_name, substrate=substrate) start_continuous_writes(juju, clear=True) - await asyncio.sleep(10) # let the continuous writes write some data + sleep(10) # let the continuous writes write some data primary_endpoint = get_primary_ip(juju, app_name) primary_unit = next( @@ -336,11 +350,11 @@ async def test_scale_down_primary(juju: jubilant.Juju, substrate: Substrate, gli "Primary endpoint did not change after removing primary unit." ) logger.info(f"New primary endpoint after scale down is {new_primary_endpoint}.") - hostnames = get_cluster_addresses(juju, app_name) + endpoints = get_cluster_addresses(juju, app_name) assert_continuous_writes_increasing(juju) cw_stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( - hostnames=hostnames, + endpoints=endpoints, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), last_written_value=cw_stats.last_written_value, diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 4e54c38..bfa1f03 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -4,10 +4,8 @@ import json import logging -import os import re import subprocess -import time from contextlib import asynccontextmanager, contextmanager from datetime import datetime, timedelta from pathlib import Path @@ -50,7 +48,6 @@ INTERNAL_USERS_SECRET_LABEL = ( f"{PEER_RELATION}.{APP_NAME}.app.{INTERNAL_USERS_SECRET_LABEL_SUFFIX}" ) -SEED_KEY_PREFIX = "seed:key:" TLS_NAME = "self-signed-certificates" TLS_CHANNEL = "1/edge" TLS_CERT_FILE = "client.pem" @@ -483,62 +480,6 @@ def get_password(juju: jubilant.Juju, user: CharmUsers = CharmUsers.VALKEY_ADMIN return secret.get(f"{user.value}-password", "") -async def seed_valkey(juju: jubilant.Juju, target_gb: float = 1.0) -> None: - # Connect to Valkey - addresses = get_cluster_addresses(juju, APP_NAME) - - # Configuration - value_size_bytes = 1024 # 1KB per value - batch_size = 5000 # Commands per pipeline - total_bytes_target = target_gb * 1024 * 1024 * 1024 - total_keys = total_bytes_target // value_size_bytes - - logger.info( - "Targeting ~%sGB (%s keys of %s bytes each)", - target_gb, - total_keys, - value_size_bytes, - ) - - start_time = time.time() - keys_added = 0 - - # Generate a fixed random block to reuse (saves CPU cycles on generation) - random_data = os.urandom(value_size_bytes).hex()[:value_size_bytes] - async with create_valkey_client(addresses, password=get_password(juju)) as client: - try: - while keys_added < total_keys: - data = { - f"{SEED_KEY_PREFIX}{key_idx}": random_data - for key_idx in range(keys_added, keys_added + batch_size) - } - - if await client.mset(data) != "OK": - raise RuntimeError("Failed to set data in Valkey cluster") - - keys_added += batch_size - - # Progress reporting - elapsed = time.time() - start_time - percent = (keys_added / total_keys) * 100 - logger.info( - "Progress: %.1f%% | Keys: %s | Elapsed: %.1f s", - percent, - keys_added, - elapsed, - ) - - except Exception as e: - logger.error("Error: %s", e) - finally: - total_time = time.time() - start_time - logger.info( - "Seeding complete! Added %s keys in %.2f seconds.", - keys_added, - total_time, - ) - - valkey_cli_result = NamedTuple( "ValkeyCliResult", [("stdout", str), ("stderr", str), ("returncode", int)] ) From 145c518073a038430bf6815a847e4b668ff11ecb Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 15 Apr 2026 12:29:48 +0000 Subject: [PATCH 264/282] network cut --- tests/integration/ha/test_network_cut.py | 14 +++++++++++--- tests/integration/helpers.py | 12 +++++++++++- 2 files changed, 22 insertions(+), 4 deletions(-) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index 2c1d291..d549367 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -27,6 +27,7 @@ ) from tests.integration.helpers import ( APP_NAME, + GLIDE_RUNNER_NAME, IMAGE_RESOURCE, TLS_CHANNEL, TLS_NAME, @@ -45,7 +46,11 @@ @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) def test_build_and_deploy( - tls_enabled: bool, charm: str, juju: jubilant.Juju, substrate: Substrate + tls_enabled: bool, + charm: str, + juju: jubilant.Juju, + substrate: Substrate, + glide_runner_charm: str, ) -> None: """Build the charm-under-test and deploy it with three units.""" juju.deploy( @@ -54,13 +59,16 @@ def test_build_and_deploy( num_units=NUM_UNITS, trust=True, ) + juju.deploy(glide_runner_charm, app=GLIDE_RUNNER_NAME) if tls_enabled: juju.deploy(TLS_NAME, channel=TLS_CHANNEL) juju.integrate(f"{APP_NAME}:client-certificates", TLS_NAME) juju.wait( - lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, GLIDE_RUNNER_NAME, idle_period=30 + ), timeout=600, ) @@ -71,7 +79,7 @@ def test_build_and_deploy( @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) @pytest.mark.parametrize("ip_change", [True, False], ids=["ip_change", "no_ip_change"]) -async def test_network_cut_primary( # noqa: C901 +def test_network_cut_primary( # noqa: C901 tls_enabled: bool, ip_change: bool, juju: jubilant.Juju, diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index bfa1f03..077e361 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -686,7 +686,17 @@ def get_number_connected_replicas( Returns: The number of connected replicas. """ - task_result = juju.run(glide_runner_unit, "execute", {"command": "info replication"}) + glide_config = get_glide_config( + juju=juju, + app_name=APP_NAME, + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju), + ) + task_result = juju.run( + glide_runner_unit, + "execute", + {"command": "info replication", "config": serialize_glide_config(glide_config)}, + ) assert task_result.status == "completed", f"Command execution failed: {task_result.results}" search_result = re.search(r"connected_slaves:([\d+])", task_result.results.get("result", "")) if not search_result: From b44eec600976c57653dff49559c70306fd3c611c Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 15 Apr 2026 12:51:51 +0000 Subject: [PATCH 265/282] port failover tests --- tests/integration/ha/test_failover.py | 290 +++++++++++++------------- 1 file changed, 144 insertions(+), 146 deletions(-) diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index 02d8430..37d89e5 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -2,19 +2,21 @@ # Copyright 2025 Canonical Ltd. # See LICENSE file for licensing details. -import asyncio import json import logging +from time import sleep import jubilant import pytest from tenacity import Retrying, stop_after_attempt, wait_fixed from literals import CharmUsers, Substrate -from tests.integration.continuous_writes import ContinuousWrites from tests.integration.cw_helpers import ( assert_continuous_writes_consistent, assert_continuous_writes_increasing, + configure_cw_runner, + start_continuous_writes, + stop_continuous_writes, ) from tests.integration.ha.helpers.helpers import ( K8S_RESTART_DELAY_DEFAULT, @@ -28,6 +30,7 @@ from ..helpers import ( APP_NAME, + GLIDE_RUNNER_NAME, IMAGE_RESOURCE, TLS_CHANNEL, TLS_NAME, @@ -54,7 +57,11 @@ @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) def test_build_and_deploy( - tls_enabled: bool, charm: str, juju: jubilant.Juju, substrate: Substrate + tls_enabled: bool, + charm: str, + juju: jubilant.Juju, + substrate: Substrate, + glide_runner_charm: str, ) -> None: """Build the charm-under-test and deploy it with three units.""" if app := existing_app(juju): @@ -68,12 +75,16 @@ def test_build_and_deploy( trust=True, ) + juju.deploy(glide_runner_charm, GLIDE_RUNNER_NAME) + if tls_enabled: juju.deploy(TLS_NAME, channel=TLS_CHANNEL) juju.integrate(f"{APP_NAME}:client-certificates", TLS_NAME) juju.wait( - lambda status: are_apps_active_and_agents_idle(status, APP_NAME, idle_period=30), + lambda status: are_apps_active_and_agents_idle( + status, APP_NAME, GLIDE_RUNNER_NAME, idle_period=30 + ), timeout=600, ) @@ -85,20 +96,24 @@ def test_build_and_deploy( @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) @pytest.mark.parametrize("signal", ["SIGKILL", "SIGTERM"], ids=["sigkill", "sigterm"]) @pytest.mark.parametrize("patched_delay", [False, True], ids=["default_delay", "patched_delay"]) -async def test_signal_db_process_on_primary( +def test_signal_db_process_on_primary( tls_enabled: bool, signal: str, patched_delay: bool, juju: jubilant.Juju, substrate: Substrate, - c_writes: ContinuousWrites, - c_writes_async_clean, ) -> None: """Make sure the cluster can self-heal when the leader goes down.""" app_name = existing_app(juju) or APP_NAME if tls_enabled: download_client_certificate_from_unit(juju, APP_NAME) - c_writes.tls_enabled = tls_enabled + + configure_cw_runner( + juju, + valkey_app=app_name, + tls_enabled=tls_enabled, + substrate=substrate, + ) # make sure we have at least two units so we can stop one of them init_units_count = len(juju.status().get_units(app_name)) @@ -112,8 +127,8 @@ async def test_signal_db_process_on_primary( ) init_units_count = len(juju.status().get_units(app_name)) - c_writes.start() - await asyncio.sleep(10) + start_continuous_writes(juju, clear=True) + sleep(10) primary_ip = get_primary_ip(juju, app_name, tls_enabled=tls_enabled) assert primary_ip, "Failed to get primary endpoint from valkey." @@ -156,7 +171,7 @@ async def test_signal_db_process_on_primary( restart_delay += 10 # add some buffer to the restart delay logger.info("Waiting for primary unit to restart. Restart delay is %s seconds.", restart_delay) - await asyncio.sleep(restart_delay) + sleep(restart_delay) logger.info("Pinging primary unit to ensure it's up.") for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(5), reraise=True): @@ -194,42 +209,43 @@ async def test_signal_db_process_on_primary( # if failover happened the old primary will need some time to restart and sync with the new primary before it shows up as a connected replica for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10), reraise=True): with attempt: - number_of_replicas = await get_number_connected_replicas( - addresses, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled - ) + number_of_replicas = get_number_connected_replicas(juju) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" ) # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") - await assert_continuous_writes_increasing( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN, - password=admin_password, - tls_enabled=tls_enabled, - ) + assert_continuous_writes_increasing(juju) - await c_writes.async_stop() + stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN, - password=admin_password, - tls_enabled=tls_enabled, + endpoints=get_cluster_addresses(juju, app_name), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + last_written_value=stats.last_written_value, ) @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) -async def test_freeze_db_process_on_primary( - tls_enabled: bool, juju: jubilant.Juju, substrate: Substrate, c_writes, c_writes_async_clean +def test_freeze_db_process_on_primary( + tls_enabled: bool, + juju: jubilant.Juju, + substrate: Substrate, ) -> None: """Make sure the cluster can self-heal when the leader goes down.""" app_name = existing_app(juju) or APP_NAME addresses = get_cluster_addresses(juju, app_name) if tls_enabled: download_client_certificate_from_unit(juju, APP_NAME) - c_writes.tls_enabled = tls_enabled + + configure_cw_runner( + juju, + valkey_app=app_name, + tls_enabled=tls_enabled, + substrate=substrate, + ) # make sure we have at least two units so we can stop one of them init_units_count = len(juju.status().get_units(app_name)) @@ -243,8 +259,8 @@ async def test_freeze_db_process_on_primary( ) init_units_count = len(juju.status().get_units(app_name)) - c_writes.start() - await asyncio.sleep(10) + start_continuous_writes(juju, clear=True) + sleep(10) primary_ip = get_primary_ip(juju, app_name, tls_enabled=tls_enabled) assert primary_ip, "Failed to get primary endpoint from valkey." @@ -269,7 +285,7 @@ async def test_freeze_db_process_on_primary( # ensure the stopped unit was restarted logger.info("Waiting for failover to happen.") - await asyncio.sleep(FAILOVER_DELAY) + sleep(FAILOVER_DELAY) new_primary_ip = get_primary_ip(juju, app_name, tls_enabled=tls_enabled) assert new_primary_ip != primary_ip, "Primary IP did not change after failover delay." @@ -279,19 +295,12 @@ async def test_freeze_db_process_on_primary( new_primary_hostname = f"{new_primary_unit_name.replace('/', '-')}.{app_name}-endpoints" new_primary_endpoint = new_primary_ip if substrate == Substrate.VM else new_primary_hostname - number_of_replicas = await get_number_connected_replicas( - addresses, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled - ) + number_of_replicas = get_number_connected_replicas(juju) assert number_of_replicas == init_units_count - 2, ( f"Expected {init_units_count - 2} replicas to be connected, got {number_of_replicas}" ) - await assert_continuous_writes_increasing( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN, - password=admin_password, - tls_enabled=tls_enabled, - ) + assert_continuous_writes_increasing(juju) send_process_control_signal( unit_name=primary_unit_name, @@ -325,9 +334,7 @@ async def test_freeze_db_process_on_primary( logger.info("Old primary unit is available again.") logger.info("Checking number of connected replicas after primary restart.") - number_of_replicas = await get_number_connected_replicas( - addresses, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled - ) + number_of_replicas = get_number_connected_replicas(juju) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" ) @@ -349,32 +356,33 @@ async def test_freeze_db_process_on_primary( # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") - await assert_continuous_writes_increasing( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN, - password=admin_password, - tls_enabled=tls_enabled, - ) + assert_continuous_writes_increasing(juju) - await c_writes.async_stop() + stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN, - password=admin_password, - tls_enabled=tls_enabled, + endpoints=get_cluster_addresses(juju, app_name), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + last_written_value=stats.last_written_value, ) @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) -async def test_full_cluster_restart( - tls_enabled: bool, juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate +def test_full_cluster_restart( + tls_enabled: bool, juju: jubilant.Juju, substrate: Substrate ) -> None: """Make sure the cluster can self-heal after all members went down.""" app_name = existing_app(juju) or APP_NAME if tls_enabled: download_client_certificate_from_unit(juju, APP_NAME) - c_writes.tls_enabled = tls_enabled + + configure_cw_runner( + juju, + valkey_app=app_name, + tls_enabled=tls_enabled, + substrate=substrate, + ) # make sure we have at least two units so we can stop one of them init_units_count = len(juju.status().get_units(app_name)) @@ -388,8 +396,8 @@ async def test_full_cluster_restart( ) init_units_count = len(juju.status().get_units(app_name)) - c_writes.start() - await asyncio.sleep(10) + start_continuous_writes(juju, clear=True) + sleep(10) # update the restart delay for all units for unit in juju.status().get_units(app_name): @@ -420,7 +428,7 @@ async def test_full_cluster_restart( # ensure the stopped unit was restarted logger.info("Waiting for units to restart.") - await asyncio.sleep(RESTART_DELAY_PATCHED + 10) + sleep(RESTART_DELAY_PATCHED + 10) for unit, unit_info in juju.status().get_units(app_name).items(): unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address @@ -432,30 +440,23 @@ async def test_full_cluster_restart( logger.info("All units are available again.") logger.info("Checking number of connected replicas after primary restart.") - addresses = get_cluster_addresses(juju, app_name) - number_of_replicas = await get_number_connected_replicas( - addresses, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled - ) + + number_of_replicas = get_number_connected_replicas(juju) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" ) # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") - await assert_continuous_writes_increasing( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN, - password=admin_password, - tls_enabled=tls_enabled, - ) + assert_continuous_writes_increasing(juju) - await c_writes.async_stop() + stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN, - password=admin_password, - tls_enabled=tls_enabled, + endpoints=get_cluster_addresses(juju, app_name), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + last_written_value=stats.last_written_value, ) # reset the restart delay to the original value @@ -469,14 +470,18 @@ async def test_full_cluster_restart( @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) -async def test_full_cluster_crash( - tls_enabled: bool, juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate -) -> None: +def test_full_cluster_crash(tls_enabled: bool, juju: jubilant.Juju, substrate: Substrate) -> None: """Make sure the cluster can self-heal after all members went down.""" app_name = existing_app(juju) or APP_NAME if tls_enabled: download_client_certificate_from_unit(juju, APP_NAME) - c_writes.tls_enabled = tls_enabled + + configure_cw_runner( + juju, + valkey_app=app_name, + tls_enabled=tls_enabled, + substrate=substrate, + ) # make sure we have at least two units so we can stop one of them init_units_count = len(juju.status().get_units(app_name)) @@ -490,8 +495,8 @@ async def test_full_cluster_crash( ) init_units_count = len(juju.status().get_units(app_name)) - c_writes.start() - await asyncio.sleep(10) + start_continuous_writes(juju, clear=True) + sleep(10) # update the restart delay for all units for unit in juju.status().get_units(app_name): @@ -522,7 +527,7 @@ async def test_full_cluster_crash( # ensure the stopped unit was restarted logger.info("Waiting for units to restart.") - await asyncio.sleep(RESTART_DELAY_PATCHED + 10) + sleep(RESTART_DELAY_PATCHED + 10) for unit, unit_info in juju.status().get_units(app_name).items(): unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address @@ -534,30 +539,23 @@ async def test_full_cluster_crash( logger.info("All units are available again.") logger.info("Checking number of connected replicas after primary restart.") - addresses = get_cluster_addresses(juju, app_name) - number_of_replicas = await get_number_connected_replicas( - addresses, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled - ) + + number_of_replicas = get_number_connected_replicas(juju) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" ) # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") - await assert_continuous_writes_increasing( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN, - password=admin_password, - tls_enabled=tls_enabled, - ) + assert_continuous_writes_increasing(juju) - await c_writes.async_stop() + stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN, - password=admin_password, - tls_enabled=tls_enabled, + endpoints=get_cluster_addresses(juju, app_name), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + last_written_value=stats.last_written_value, ) # reset the restart delay to the original value @@ -571,14 +569,18 @@ async def test_full_cluster_crash( @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) -async def test_reboot_primary( - tls_enabled: bool, juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate -) -> None: +def test_reboot_primary(tls_enabled: bool, juju: jubilant.Juju, substrate: Substrate) -> None: """Make sure the cluster can self-heal when the leader goes down.""" app_name = existing_app(juju) or APP_NAME if tls_enabled: download_client_certificate_from_unit(juju, APP_NAME) - c_writes.tls_enabled = tls_enabled + + configure_cw_runner( + juju, + valkey_app=app_name, + tls_enabled=tls_enabled, + substrate=substrate, + ) # make sure we have at least two units so we can stop one of them init_units_count = len(juju.status().get_units(app_name)) @@ -592,9 +594,8 @@ async def test_reboot_primary( ) init_units_count = len(juju.status().get_units(app_name)) - await c_writes.async_clear() - c_writes.start() - await asyncio.sleep(10) + start_continuous_writes(juju, clear=True) + sleep(10) primary_ip = get_primary_ip(juju, app_name, tls_enabled=tls_enabled) assert primary_ip, "Failed to get primary endpoint from valkey." @@ -606,7 +607,7 @@ async def test_reboot_primary( reboot_unit(juju, primary_unit_name, substrate) # wait for unit to reboot - await asyncio.sleep(3) + sleep(3) # make sure the process is stopped admin_password = get_password(juju, CharmUsers.VALKEY_ADMIN) @@ -623,7 +624,12 @@ async def test_reboot_primary( timeout=1200, ) - c_writes.update() + configure_cw_runner( + juju, + valkey_app=app_name, + tls_enabled=tls_enabled, + substrate=substrate, + ) # on k8s we get a new ip new_ip = get_ip_from_unit(juju, primary_unit_name, substrate) @@ -631,42 +637,36 @@ async def test_reboot_primary( "Primary unit is not responding after reboot." ) - number_of_replicas = await get_number_connected_replicas( - get_cluster_addresses(juju, app_name), - CharmUsers.VALKEY_ADMIN, - admin_password, - tls_enabled=tls_enabled, - ) + number_of_replicas = get_number_connected_replicas(juju) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected, got {number_of_replicas}" ) - await assert_continuous_writes_increasing( - hostnames=get_cluster_addresses(juju, app_name), - username=CharmUsers.VALKEY_ADMIN, - password=admin_password, - tls_enabled=tls_enabled, - ) + assert_continuous_writes_increasing(juju) - await c_writes.async_stop() + stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( - hostnames=get_cluster_addresses(juju, app_name), - username=CharmUsers.VALKEY_ADMIN, - password=admin_password, - tls_enabled=tls_enabled, + endpoints=get_cluster_addresses(juju, app_name), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + last_written_value=stats.last_written_value, ) @pytest.mark.parametrize("tls_enabled", [False, True], ids=["tls_off", "tls_on"]) -async def test_full_cluster_reboot( - tls_enabled: bool, juju: jubilant.Juju, c_writes, c_writes_async_clean, substrate: Substrate -) -> None: +def test_full_cluster_reboot(tls_enabled: bool, juju: jubilant.Juju, substrate: Substrate) -> None: """Make sure the cluster can self-heal after all members went down.""" app_name = existing_app(juju) or APP_NAME if tls_enabled: download_client_certificate_from_unit(juju, APP_NAME) - c_writes.tls_enabled = tls_enabled + + configure_cw_runner( + juju, + valkey_app=app_name, + tls_enabled=tls_enabled, + substrate=substrate, + ) # make sure we have at least two units so we can stop one of them init_units_count = len(juju.status().get_units(app_name)) @@ -680,13 +680,13 @@ async def test_full_cluster_reboot( ) init_units_count = len(juju.status().get_units(app_name)) - c_writes.start() - await asyncio.sleep(10) + start_continuous_writes(juju, clear=True) + sleep(10) for unit in juju.status().get_units(app_name): reboot_unit(juju, unit, substrate) - await asyncio.sleep(3) + sleep(3) # make sure the process is stopped admin_password = get_password(juju, CharmUsers.VALKEY_ADMIN) @@ -706,7 +706,12 @@ async def test_full_cluster_reboot( timeout=1200, ) - c_writes.update() + configure_cw_runner( + juju, + valkey_app=app_name, + tls_enabled=tls_enabled, + substrate=substrate, + ) for unit, unit_info in juju.status().get_units(app_name).items(): unit_ip = unit_info.public_address if substrate == Substrate.VM else unit_info.address @@ -718,28 +723,21 @@ async def test_full_cluster_reboot( logger.info("All units are available again.") logger.info("Checking number of connected replicas after primary restart.") - addresses = get_cluster_addresses(juju, app_name) - number_of_replicas = await get_number_connected_replicas( - addresses, CharmUsers.VALKEY_ADMIN, admin_password, tls_enabled=tls_enabled - ) + + number_of_replicas = get_number_connected_replicas(juju) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" ) # ensure data is written in the cluster logger.info("Checking continuous writes are increasing after primary restart.") - await assert_continuous_writes_increasing( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN, - password=admin_password, - tls_enabled=tls_enabled, - ) + assert_continuous_writes_increasing(juju) - await c_writes.async_stop() + stats = stop_continuous_writes(juju) assert_continuous_writes_consistent( - hostnames=addresses, - username=CharmUsers.VALKEY_ADMIN, - password=admin_password, - tls_enabled=tls_enabled, + endpoints=get_cluster_addresses(juju, app_name), + username=CharmUsers.VALKEY_ADMIN.value, + password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), + last_written_value=stats.last_written_value, ) From 2f5e85eae2b8cb9bf23235c9cab2cc817b014943 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 15 Apr 2026 12:54:06 +0000 Subject: [PATCH 266/282] format --- tests/integration/clients/requirer-charm/src/client.py | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/tests/integration/clients/requirer-charm/src/client.py b/tests/integration/clients/requirer-charm/src/client.py index 9909e70..7420270 100644 --- a/tests/integration/clients/requirer-charm/src/client.py +++ b/tests/integration/clients/requirer-charm/src/client.py @@ -82,9 +82,7 @@ async def get_key(self, key: str) -> str: finally: await client.close() - async def seed_data( - self, target_gb: float = 1.0, key_prefix: str = "seed:key:" - ) -> int: + async def seed_data(self, target_gb: float = 1.0, key_prefix: str = "seed:key:") -> int: """Seed Valkey with random data and return the number of keys written.""" value_size_bytes = 1024 batch_size = 5000 @@ -97,9 +95,7 @@ async def seed_data( try: while keys_added < total_keys: batch_end = min(keys_added + batch_size, total_keys) - data = { - f"{key_prefix}{i}": random_data for i in range(keys_added, batch_end) - } + data = {f"{key_prefix}{i}": random_data for i in range(keys_added, batch_end)} result = await client.mset(data) if result != "OK": raise RuntimeError(f"mset failed: {result}") From 27575bc8f42b7ee49bfc9328b003241be55f4325 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 15 Apr 2026 14:25:56 +0000 Subject: [PATCH 267/282] add tls_enabled in get number of replicas and remove unused code --- tests/integration/ha/test_failover.py | 14 ++--- tests/integration/ha/test_network_cut.py | 4 +- tests/integration/helpers.py | 68 +++--------------------- 3 files changed, 15 insertions(+), 71 deletions(-) diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index 37d89e5..f7cd492 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -209,7 +209,7 @@ def test_signal_db_process_on_primary( # if failover happened the old primary will need some time to restart and sync with the new primary before it shows up as a connected replica for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10), reraise=True): with attempt: - number_of_replicas = get_number_connected_replicas(juju) + number_of_replicas = get_number_connected_replicas(juju, tls_enabled=tls_enabled) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" ) @@ -295,7 +295,7 @@ def test_freeze_db_process_on_primary( new_primary_hostname = f"{new_primary_unit_name.replace('/', '-')}.{app_name}-endpoints" new_primary_endpoint = new_primary_ip if substrate == Substrate.VM else new_primary_hostname - number_of_replicas = get_number_connected_replicas(juju) + number_of_replicas = get_number_connected_replicas(juju, tls_enabled=tls_enabled) assert number_of_replicas == init_units_count - 2, ( f"Expected {init_units_count - 2} replicas to be connected, got {number_of_replicas}" ) @@ -334,7 +334,7 @@ def test_freeze_db_process_on_primary( logger.info("Old primary unit is available again.") logger.info("Checking number of connected replicas after primary restart.") - number_of_replicas = get_number_connected_replicas(juju) + number_of_replicas = get_number_connected_replicas(juju, tls_enabled=tls_enabled) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" ) @@ -441,7 +441,7 @@ def test_full_cluster_restart( logger.info("Checking number of connected replicas after primary restart.") - number_of_replicas = get_number_connected_replicas(juju) + number_of_replicas = get_number_connected_replicas(juju, tls_enabled=tls_enabled) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" ) @@ -540,7 +540,7 @@ def test_full_cluster_crash(tls_enabled: bool, juju: jubilant.Juju, substrate: S logger.info("Checking number of connected replicas after primary restart.") - number_of_replicas = get_number_connected_replicas(juju) + number_of_replicas = get_number_connected_replicas(juju, tls_enabled=tls_enabled) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" ) @@ -637,7 +637,7 @@ def test_reboot_primary(tls_enabled: bool, juju: jubilant.Juju, substrate: Subst "Primary unit is not responding after reboot." ) - number_of_replicas = get_number_connected_replicas(juju) + number_of_replicas = get_number_connected_replicas(juju, tls_enabled=tls_enabled) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected, got {number_of_replicas}" ) @@ -724,7 +724,7 @@ def test_full_cluster_reboot(tls_enabled: bool, juju: jubilant.Juju, substrate: logger.info("Checking number of connected replicas after primary restart.") - number_of_replicas = get_number_connected_replicas(juju) + number_of_replicas = get_number_connected_replicas(juju, tls_enabled=tls_enabled) assert number_of_replicas == init_units_count - 1, ( f"Expected {init_units_count - 1} replicas to be connected after primary restart, got {number_of_replicas}" ) diff --git a/tests/integration/ha/test_network_cut.py b/tests/integration/ha/test_network_cut.py index d549367..658647a 100644 --- a/tests/integration/ha/test_network_cut.py +++ b/tests/integration/ha/test_network_cut.py @@ -176,7 +176,7 @@ def test_network_cut_primary( # noqa: C901 # retry in case cluster hasn't stabilized yet after primary cut and new primary election for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10), reraise=True): with attempt: - number_of_replicas = get_number_connected_replicas(juju) + number_of_replicas = get_number_connected_replicas(juju, tls_enabled=tls_enabled) assert number_of_replicas == NUM_UNITS - 2, ( f"Expected {NUM_UNITS - 2} connected replicas, got {number_of_replicas}." ) @@ -256,7 +256,7 @@ def test_network_cut_primary( # noqa: C901 # sometimes it takes some time for the old primary to be marked as replica and for sentinels to update their status, so we add a retry here for attempt in Retrying(stop=stop_after_attempt(10), wait=wait_fixed(10), reraise=True): with attempt: - number_of_replicas = get_number_connected_replicas(juju) + number_of_replicas = get_number_connected_replicas(juju, tls_enabled=tls_enabled) assert number_of_replicas == NUM_UNITS - 1, ( f"Expected {NUM_UNITS - 1} connected replicas after network restoration, got {number_of_replicas}." ) diff --git a/tests/integration/helpers.py b/tests/integration/helpers.py index 077e361..647a98a 100644 --- a/tests/integration/helpers.py +++ b/tests/integration/helpers.py @@ -6,7 +6,7 @@ import logging import re import subprocess -from contextlib import asynccontextmanager, contextmanager +from contextlib import contextmanager from datetime import datetime, timedelta from pathlib import Path from typing import List, Literal, NamedTuple @@ -17,7 +17,6 @@ from dateutil.parser import parse from glide import ( AdvancedGlideClientConfiguration, - GlideClient, GlideClientConfiguration, NodeAddress, ServerCredentials, @@ -319,65 +318,6 @@ def get_glide_config( return client_config -@asynccontextmanager -async def create_valkey_client( - hostnames: list[str], - username: str | None = CharmUsers.VALKEY_ADMIN.value, - password: str | None = None, - tls_enabled: bool = False, -): - """Create and return a Valkey client connected to the cluster. - - Args: - hostnames: List of hostnames of the Valkey cluster nodes. - username: The username for authentication. - password: The password for the internal user. - tls_enabled: Whether TLS certificates are needed. - - Returns: - A Valkey client instance connected to the cluster. - """ - addresses = [ - NodeAddress(host=host, port=TLS_PORT if tls_enabled else CLIENT_PORT) for host in hostnames - ] - - credentials = None - if username or password: - credentials = ServerCredentials(username=username, password=password) - - if tls_enabled: - # Read locally stored certificate files - with open("client.pem", "rb") as f: - tls_cert = f.read() - with open("client.key", "rb") as f: - tls_key = f.read() - with open("client_ca.pem", "rb") as f: - tls_ca_cert = f.read() - - tls_config = TlsAdvancedConfiguration( - client_cert_pem=tls_cert if tls_enabled else None, - client_key_pem=tls_key if tls_enabled else None, - root_pem_cacerts=tls_ca_cert if tls_enabled else None, - # We only set FQDN in the certs the IP is not in the cert - # so we need to skip hostname verification - # we cannot use the hostname because the runner cannot resolve it - use_insecure_tls=True if tls_enabled else None, - ) - - client_config = GlideClientConfiguration( - addresses, - credentials=credentials, - use_tls=True if tls_enabled else False, - advanced_config=AdvancedGlideClientConfiguration(tls_config=tls_config), - ) - - client = await GlideClient.create(client_config) - try: - yield client - finally: - await client.close() - - def set_password( juju: jubilant.Juju, password: str, @@ -675,13 +615,16 @@ def ping_cluster( def get_number_connected_replicas( - juju: jubilant.Juju, glide_runner_unit: str = f"{GLIDE_RUNNER_NAME}/leader" + juju: jubilant.Juju, + glide_runner_unit: str = f"{GLIDE_RUNNER_NAME}/leader", + tls_enabled: bool = False, ) -> int: """Get the number of connected replicas in the Valkey cluster. Args: juju: An instance of Jubilant's Juju class on which to run Juju commands glide_runner_unit: The unit name of the glide-runner to execute the command on + tls_enabled: Whether TLS certificates are needed. Returns: The number of connected replicas. @@ -691,6 +634,7 @@ def get_number_connected_replicas( app_name=APP_NAME, username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju), + tls_enabled=tls_enabled, ) task_result = juju.run( glide_runner_unit, From 6914b3f57748dccbda33d9e723f892ab57bdaeb5 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 15 Apr 2026 19:11:53 +0000 Subject: [PATCH 268/282] add tls enabled to consistency check on failover --- tests/integration/ha/test_failover.py | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tests/integration/ha/test_failover.py b/tests/integration/ha/test_failover.py index f7cd492..c2e95e6 100644 --- a/tests/integration/ha/test_failover.py +++ b/tests/integration/ha/test_failover.py @@ -225,6 +225,7 @@ def test_signal_db_process_on_primary( username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), last_written_value=stats.last_written_value, + tls_enabled=tls_enabled, ) @@ -365,6 +366,7 @@ def test_freeze_db_process_on_primary( username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), last_written_value=stats.last_written_value, + tls_enabled=tls_enabled, ) @@ -457,6 +459,7 @@ def test_full_cluster_restart( username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), last_written_value=stats.last_written_value, + tls_enabled=tls_enabled, ) # reset the restart delay to the original value @@ -556,6 +559,7 @@ def test_full_cluster_crash(tls_enabled: bool, juju: jubilant.Juju, substrate: S username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), last_written_value=stats.last_written_value, + tls_enabled=tls_enabled, ) # reset the restart delay to the original value @@ -651,6 +655,7 @@ def test_reboot_primary(tls_enabled: bool, juju: jubilant.Juju, substrate: Subst username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), last_written_value=stats.last_written_value, + tls_enabled=tls_enabled, ) @@ -740,4 +745,5 @@ def test_full_cluster_reboot(tls_enabled: bool, juju: jubilant.Juju, substrate: username=CharmUsers.VALKEY_ADMIN.value, password=get_password(juju, user=CharmUsers.VALKEY_ADMIN), last_written_value=stats.last_written_value, + tls_enabled=tls_enabled, ) From bd1f71742025b51fc413986bd2f0fc956f53c094 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 17 Apr 2026 09:37:58 +0000 Subject: [PATCH 269/282] feedback --- .../clients/requirer-charm/src/charm.py | 21 +++++++++---------- 1 file changed, 10 insertions(+), 11 deletions(-) diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index 18f78a1..5461b8a 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -171,8 +171,7 @@ def remote_responses(self) -> list[ResourceProviderModel] | None: @property def _glide_config(self) -> GlideConfig | None: """Parse the glide-config JSON option, or None if not set.""" - raw = str(self.config.get("glide-config", "")).strip() - if not raw: + if not (raw := str(self.config.get("glide-config", "")).strip()): return None return GlideConfig.from_json(raw) @@ -184,7 +183,7 @@ def _use_config(self) -> bool: @property def credentials(self) -> dict[str, str | None]: """Retrieve the client credentials from config or relation.""" - if (cfg := self._glide_config) is not None: + if cfg := self._glide_config: return {cfg.username: cfg.password or None} if self.data_interfaces_version == 0: @@ -209,7 +208,7 @@ def credentials(self) -> dict[str, str | None]: @property def primary_endpoint(self) -> str | None: """Retrieve the write-endpoints from config or relation.""" - if (cfg := self._glide_config) is not None: + if cfg := self._glide_config: return cfg.endpoints or None if self.data_interfaces_version == 0: @@ -226,7 +225,7 @@ def primary_endpoint(self) -> str | None: @property def tls_enabled(self) -> bool: """Retrieve the TLS flag from config or relation.""" - if (cfg := self._glide_config) is not None: + if cfg := self._glide_config: return cfg.tls_enabled if not self.valkey_relation: @@ -255,7 +254,7 @@ def use_mtls(self) -> bool: @property def tls_ca_cert(self) -> str | None: """Retrieve the TLS CA cert from config or relation.""" - if (cfg := self._glide_config) is not None: + if cfg := self._glide_config: return base64.b64decode(cfg.cacert).decode() if cfg.cacert else None if self.data_interfaces_version == 0: @@ -272,7 +271,7 @@ def tls_ca_cert(self) -> str | None: @property def certificate(self) -> str | None: """Retrieve the client certificate from config or the certificates relation.""" - if (cfg := self._glide_config) is not None: + if cfg := self._glide_config: return base64.b64decode(cfg.cert).decode() if cfg.cert else None certificates, _ = self.certificates.get_assigned_certificates() @@ -284,7 +283,7 @@ def certificate(self) -> str | None: @property def private_key(self) -> str | None: """Retrieve the client private key from config or the certificates relation.""" - if (cfg := self._glide_config) is not None: + if cfg := self._glide_config: return base64.b64decode(cfg.key).decode() if cfg.key else None _, private_key = self.certificates.get_assigned_certificates() @@ -368,8 +367,7 @@ def _on_get_action(self, event: ops.ActionEvent) -> None: def _on_execute_action(self, event: ops.ActionEvent) -> None: """Handle execute action.""" - command = str(event.params.get("command", "")) - if not command: + if not (command := str(event.params.get("command", ""))): event.fail("Parameter command is required.") event.set_results({"ok": False}) return @@ -669,7 +667,8 @@ def _on_config_changed(self, event: ops.ConfigChangedEvent) -> None: try: current_config = DaemonConfig.from_file(CWPath.CONFIG.value) - except Exception: + except Exception as exc: + logger.warning("Failed to read current daemon config: %s", exc) return if current_config.endpoints == self.primary_endpoint: From 03b0d6b690bd2b567faf8a3f952133ce58904508 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 17 Apr 2026 09:38:40 +0000 Subject: [PATCH 270/282] use single client --- .../requirer-charm/src/continuous_writes.py | 87 +++++++++---------- 1 file changed, 42 insertions(+), 45 deletions(-) diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py index adae211..8ba9086 100644 --- a/tests/integration/clients/requirer-charm/src/continuous_writes.py +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -33,7 +33,6 @@ import os import signal import sys -from contextlib import asynccontextmanager from pathlib import Path from glide import ( @@ -130,28 +129,17 @@ async def _make_client(config: DaemonConfig) -> GlideClient: return await GlideClient.create(glide_config) -@asynccontextmanager -async def glide_client(config: DaemonConfig): - """Async context manager that creates and closes a GlideClient.""" - client = await _make_client(config) - try: - yield client - finally: - await client.close() - - -async def clear(config: DaemonConfig) -> None: +async def clear(client: GlideClient) -> None: """Delete the continuous-writes list key from Valkey.""" - async with glide_client(config) as client: - await client.delete([KEY]) - logger.info("Cleared existing values for key '%s'.", KEY) + await client.delete([KEY]) + logger.info("Cleared existing values for key '%s'.", KEY) -async def _initial_count(config: DaemonConfig) -> tuple[int, int]: +async def _initial_count(config: DaemonConfig, client: GlideClient) -> tuple[int, int]: """Return (counter, list_len) to start from, resuming from state file if present.""" if config.clear_existing: try: - await clear(config) + await clear(client) except Exception as exc: logger.warning("Failed to clear existing values: %s", exc) return config.initial_count, 0 @@ -166,8 +154,7 @@ async def _initial_count(config: DaemonConfig) -> tuple[int, int]: count = 0 try: - async with glide_client(config) as client: - count = await client.llen(KEY) + count = await client.llen(KEY) except Exception: pass @@ -208,38 +195,48 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: loop.add_signal_handler(signal.SIGINT, stop.set) loop.add_signal_handler(signal.SIGUSR1, reload.set) - counter, count = await _initial_count(config) + client = await _make_client(config) + counter, count = await _initial_count(config, client) last_written = counter - 1 logger.info( "Starting continuous writes from counter=%d (existing list len=%d)", counter, count ) - while not stop.is_set(): - try: - async with glide_client(config) as client: + try: + while not stop.is_set(): + if reload.is_set(): + reload.clear() + config = _try_reload(config) + await client.close() + client = await _make_client(config) + + try: new_len = await client.lpush(KEY, [str(counter)]) - if not new_len: - raise RuntimeError("LPUSH returned 0/None") - last_written = counter - count = new_len - _write_state_atomic(last_written, count) - logger.info("Wrote %d (list len=%d)", counter, count) - except Exception as exc: - # Write failed — log and skip without updating last_written. - # counter still increments so a gap is introduced in the sequence, - # making failed writes detectable during consistency checks. - logger.warning("Write failed for counter=%d: %s", counter, exc) - - counter += 1 - - try: - await asyncio.wait_for(stop.wait(), timeout=sleep_interval) - except asyncio.TimeoutError: - pass - - if reload.is_set(): - reload.clear() - config = _try_reload(config) + if not new_len: + raise RuntimeError("LPUSH returned 0/None") + last_written = counter + count = new_len + _write_state_atomic(last_written, count) + logger.info("Wrote %d (list len=%d)", counter, count) + except Exception as exc: + # Write failed — log and skip without updating last_written. + # counter still increments so a gap is introduced in the sequence, + # making failed writes detectable during consistency checks. + logger.warning("Write failed for counter=%d: %s", counter, exc) + try: + await client.close() + except Exception: + pass + client = await _make_client(config) + + counter += 1 + + try: + await asyncio.wait_for(stop.wait(), timeout=sleep_interval) + except asyncio.TimeoutError: + pass + finally: + await client.close() # Flush final state before exiting _write_state_atomic(last_written, count) From cc781dedfd54cab3e388383e2918c9cbfb2c493f Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 17 Apr 2026 09:43:18 +0000 Subject: [PATCH 271/282] add back conditions for client integration tests --- tests/integration/clients/requirer-charm/src/charm.py | 8 ++++---- tests/integration/clients/requirer-charm/src/client.py | 2 +- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index 5461b8a..6764b58 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -303,11 +303,11 @@ def get_valkey_client(self, user: str) -> ValkeyClient: ): raise ValueError("TLS is enabled but certificates are not yet available.") return ValkeyClient( - username=user, - password=self.credentials.get(user), + username="" if self.config.get("use-certificate-auth") else user, + password="" if self.config.get("use-certificate-auth") else self.credentials.get(user), endpoints=self.primary_endpoint.split(","), - tls_cert=self.certificate.encode() if self.tls_enabled else None, - tls_key=self.private_key.encode() if self.tls_enabled else None, + tls_cert=self.certificate.encode() if self.use_mtls else None, + tls_key=self.private_key.encode() if self.use_mtls else None, tls_ca_cert=self.tls_ca_cert.encode() if self.tls_enabled else None, ) diff --git a/tests/integration/clients/requirer-charm/src/client.py b/tests/integration/clients/requirer-charm/src/client.py index 7420270..17134f8 100644 --- a/tests/integration/clients/requirer-charm/src/client.py +++ b/tests/integration/clients/requirer-charm/src/client.py @@ -54,7 +54,7 @@ async def create_client(self) -> GlideClient: client_config = GlideClientConfiguration( addresses, - use_tls=True if self.tls_cert else False, + use_tls=True if self.tls_ca_cert else False, credentials=ServerCredentials(username=self.user, password=self.password), request_timeout=1000, # in milliseconds advanced_config=AdvancedGlideClientConfiguration(tls_config=tls_config), From 18041a3fbef148dd915c59bde3073dbdaba3e684 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 17 Apr 2026 09:44:32 +0000 Subject: [PATCH 272/282] remove unused functions from glide helpers --- .../requirer-charm/src/glide_helpers.py | 23 ------------------- 1 file changed, 23 deletions(-) diff --git a/tests/integration/clients/requirer-charm/src/glide_helpers.py b/tests/integration/clients/requirer-charm/src/glide_helpers.py index b4f6f97..b872d6f 100644 --- a/tests/integration/clients/requirer-charm/src/glide_helpers.py +++ b/tests/integration/clients/requirer-charm/src/glide_helpers.py @@ -68,24 +68,6 @@ _ENUM_CLASSES: dict[str, type[Enum]] = {"ReadFrom": ReadFrom} -def serialize(obj: Any) -> Any: - """Recursively serialize a Glide object to a JSON-compatible structure.""" - if obj is None: - return None - if isinstance(obj, bytes): - return {"__bytes__": base64.b64encode(obj).decode()} - if isinstance(obj, Enum): - return {"__enum__": type(obj).__name__, "value": obj.name} - if type(obj) in SCHEMA: - return { - "__class__": type(obj).__name__, - **{field: serialize(getattr(obj, field)) for field in SCHEMA[type(obj)]}, - } - if isinstance(obj, list): - return [serialize(i) for i in obj] - return obj # str, int, bool, None - - def deserialize(d: Any) -> Any: """Recursively deserialize a JSON-compatible structure back to Glide objects.""" if d is None or not isinstance(d, (dict, list)): @@ -104,11 +86,6 @@ def deserialize(d: Any) -> Any: return d -def serialize_glide_config(config: GlideClientConfiguration) -> str: - """Serialize a GlideClientConfiguration to a JSON string.""" - return json.dumps(serialize(config)) - - def deserialize_glide_config(payload: str) -> GlideClientConfiguration: """Deserialize a JSON string back to a GlideClientConfiguration.""" return deserialize(json.loads(payload)) From 36ed96d4c2ea133a33a236700647cf52a9072ed4 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 17 Apr 2026 10:10:42 +0000 Subject: [PATCH 273/282] fix llen --- .../integration/clients/requirer-charm/src/cw_helpers.py | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/tests/integration/clients/requirer-charm/src/cw_helpers.py b/tests/integration/clients/requirer-charm/src/cw_helpers.py index cf25f37..c514970 100644 --- a/tests/integration/clients/requirer-charm/src/cw_helpers.py +++ b/tests/integration/clients/requirer-charm/src/cw_helpers.py @@ -11,8 +11,7 @@ from pathlib import Path from continuous_writes import KEY as CW_KEY -from continuous_writes import DaemonConfig -from continuous_writes import glide_client as cw_client +from continuous_writes import DaemonConfig, _make_client as _cw_make_client logger = logging.getLogger(__name__) @@ -63,5 +62,8 @@ def wait_for_pid_exit( async def cw_llen(config: DaemonConfig) -> int: """Return the current length of the continuous-writes list in Valkey.""" - async with cw_client(config) as client: + client = await _cw_make_client(config) + try: return await client.llen(CW_KEY) + finally: + await client.close() From 5e4808562304f614c29d9cbf7ffa2711fae7139b Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 17 Apr 2026 10:20:37 +0000 Subject: [PATCH 274/282] lint --- tests/integration/clients/requirer-charm/src/cw_helpers.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tests/integration/clients/requirer-charm/src/cw_helpers.py b/tests/integration/clients/requirer-charm/src/cw_helpers.py index c514970..0593f06 100644 --- a/tests/integration/clients/requirer-charm/src/cw_helpers.py +++ b/tests/integration/clients/requirer-charm/src/cw_helpers.py @@ -11,7 +11,8 @@ from pathlib import Path from continuous_writes import KEY as CW_KEY -from continuous_writes import DaemonConfig, _make_client as _cw_make_client +from continuous_writes import DaemonConfig +from continuous_writes import _make_client as _cw_make_client logger = logging.getLogger(__name__) From 66845b2047e4aa9cb971cfe0b34a79931af06fe4 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 17 Apr 2026 10:39:44 +0000 Subject: [PATCH 275/282] refactor --- .../requirer-charm/src/continuous_writes.py | 43 +++++++++++++------ 1 file changed, 29 insertions(+), 14 deletions(-) diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py index 8ba9086..70b5b26 100644 --- a/tests/integration/clients/requirer-charm/src/continuous_writes.py +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -185,6 +185,23 @@ def _try_reload(old: DaemonConfig) -> DaemonConfig: return new +async def _close_client(client: GlideClient | None) -> None: + """Close client if not None, swallowing errors.""" + if client is not None: + try: + await client.close() + except Exception: + pass + + +async def _write_one(client: GlideClient, counter: int) -> tuple[int, int]: + """Write one value, return (last_written, new_count).""" + new_len = await client.lpush(KEY, [str(counter)]) + if not new_len: + raise RuntimeError("LPUSH returned 0/None") + return counter, new_len + + async def run(config: DaemonConfig, sleep_interval: float) -> None: """Run the main write loop until SIGTERM/SIGINT.""" stop = asyncio.Event() @@ -195,7 +212,7 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: loop.add_signal_handler(signal.SIGINT, stop.set) loop.add_signal_handler(signal.SIGUSR1, reload.set) - client = await _make_client(config) + client: GlideClient | None = await _make_client(config) counter, count = await _initial_count(config, client) last_written = counter - 1 logger.info( @@ -207,15 +224,16 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: if reload.is_set(): reload.clear() config = _try_reload(config) - await client.close() - client = await _make_client(config) + await _close_client(client) + client = None try: - new_len = await client.lpush(KEY, [str(counter)]) - if not new_len: - raise RuntimeError("LPUSH returned 0/None") - last_written = counter - count = new_len + if client is None: + logger.warning( + "Client is none for counter=%d, attempting to reconnect...", counter + ) + client = await _make_client(config) + last_written, count = await _write_one(client, counter) _write_state_atomic(last_written, count) logger.info("Wrote %d (list len=%d)", counter, count) except Exception as exc: @@ -223,11 +241,8 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: # counter still increments so a gap is introduced in the sequence, # making failed writes detectable during consistency checks. logger.warning("Write failed for counter=%d: %s", counter, exc) - try: - await client.close() - except Exception: - pass - client = await _make_client(config) + await _close_client(client) + client = None counter += 1 @@ -236,7 +251,7 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: except asyncio.TimeoutError: pass finally: - await client.close() + await _close_client(client) # Flush final state before exiting _write_state_atomic(last_written, count) From d94a2e623baf33a5ea377296833b92f812e9a9f8 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 17 Apr 2026 11:57:21 +0000 Subject: [PATCH 276/282] refactoring and fix copilot feedback --- .../clients/requirer-charm/charmcraft.yaml | 22 +++++++++++-------- .../clients/requirer-charm/src/charm.py | 5 +---- .../requirer-charm/src/continuous_writes.py | 9 ++++++++ 3 files changed, 23 insertions(+), 13 deletions(-) diff --git a/tests/integration/clients/requirer-charm/charmcraft.yaml b/tests/integration/clients/requirer-charm/charmcraft.yaml index b2d8fb3..34060bd 100644 --- a/tests/integration/clients/requirer-charm/charmcraft.yaml +++ b/tests/integration/clients/requirer-charm/charmcraft.yaml @@ -44,7 +44,7 @@ parts: source: . after: - poetry-deps - poetry-export-extra-args: ["--without-hashes"] + poetry-export-extra-args: [ "--without-hashes" ] build-packages: - libffi-dev # Needed to build Python dependencies with Rust from source - libssl-dev # Needed to build Python dependencies with Rust from source @@ -123,7 +123,8 @@ actions: description: > Start a background daemon that continuously writes incrementing integers to a Valkey list using the relation-provided credentials. The daemon - survives between action calls and can be stopped with stop-continuous-writes. + survives between action calls and can be stopped with + stop-continuous-writes. params: sleep-interval: description: Seconds to sleep between writes (float, default 1.0) @@ -146,7 +147,7 @@ actions: verifying the count has increased. params: wait: - description: Seconds to wait between the two state samples (default 5) + description: Seconds to wait between the two state samples (default 10) type: number default: 10 @@ -158,18 +159,20 @@ actions: stop-continuous-writes: description: > Stop the continuous-writes daemon and return the last written value and - total count of successful writes. Use this after a disruptive operation - to retrieve stats for consistency verification. + total count of successful writes. Use this after a disruptive operation to + retrieve stats for consistency verification. params: clear: - description: Delete continuous-writes data from Valkey after stopping (default false) + description: Delete continuous-writes data from Valkey after stopping (default + false) type: boolean default: false seed-data: description: > - Seed Valkey with random 1 KB values using the relation-provided credentials. - Keys are written in batches of 5000 using MSET and named "". + Seed Valkey with random 1 KB values using the relation-provided + credentials. Keys are written in batches of 5000 using MSET and named + "". params: target-gb: description: Target amount of data to seed in GB (default 1.0) @@ -201,6 +204,7 @@ config: type: boolean default: false use-certificate-auth: - description: Flag to enable authentication via the common name of the client certificate + description: Flag to enable authentication via the common name of the client + certificate type: boolean default: false diff --git a/tests/integration/clients/requirer-charm/src/charm.py b/tests/integration/clients/requirer-charm/src/charm.py index 6764b58..18c80f9 100755 --- a/tests/integration/clients/requirer-charm/src/charm.py +++ b/tests/integration/clients/requirer-charm/src/charm.py @@ -24,7 +24,7 @@ from charms.data_platform_libs.v0.data_interfaces import DatabaseCreatedEvent, DatabaseRequires from client import ValkeyClient from continuous_writes import DaemonConfig, TlsConfig -from continuous_writes import clear as cw_clear +from continuous_writes import clear_key as cw_clear from cw_helpers import CWPath, cw_llen, wait_for_pid_exit from dpcharmlibs.interfaces import ( DataContractV1, @@ -143,9 +143,6 @@ def __init__(self, framework: ops.Framework): self._on_assert_continuous_writes_increasing_action, ) framework.observe(self.valkey_interface.on.endpoints_changed, self._on_endpoints_changed) - framework.observe(self.on.config_changed, self._on_config_changed) - framework.observe(self.on.get_credentials_action, self._on_get_credentials_action) - framework.observe(self.valkey_interface.on.endpoints_changed, self._on_endpoints_changed) @property def valkey_relation(self) -> ops.Relation | None: diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py index 70b5b26..bca83d7 100644 --- a/tests/integration/clients/requirer-charm/src/continuous_writes.py +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -194,6 +194,15 @@ async def _close_client(client: GlideClient | None) -> None: pass +async def clear_key(config: DaemonConfig) -> None: + """Connect to Valkey and delete the continuous-writes list key.""" + client = await _make_client(config) + try: + await clear(client) + finally: + await _close_client(client) + + async def _write_one(client: GlideClient, counter: int) -> tuple[int, int]: """Write one value, return (last_written, new_count).""" new_len = await client.lpush(KEY, [str(counter)]) From 0b71297aaf99f3b0eb788c89491ad7b70124bfd9 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Fri, 17 Apr 2026 18:20:21 +0000 Subject: [PATCH 277/282] retry failed writes --- .../clients/requirer-charm/src/continuous_writes.py | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py index bca83d7..9f88936 100644 --- a/tests/integration/clients/requirer-charm/src/continuous_writes.py +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -21,6 +21,9 @@ ca_path - path to CA cert PEM (required if tls_enabled) initial_count - int to start counter from (optional, default 0) +On write failure the same counter value is retried until it succeeds before +advancing, so no gaps are introduced in the sequence. + State is written atomically to STATE_PATH after each successful write: {"last_written": N, "count": N} @@ -245,16 +248,13 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: last_written, count = await _write_one(client, counter) _write_state_atomic(last_written, count) logger.info("Wrote %d (list len=%d)", counter, count) + counter += 1 except Exception as exc: - # Write failed — log and skip without updating last_written. - # counter still increments so a gap is introduced in the sequence, - # making failed writes detectable during consistency checks. - logger.warning("Write failed for counter=%d: %s", counter, exc) + # Write failed — retry the same counter value on the next iteration. + logger.warning("Write failed for counter=%d, will retry: %s", counter, exc) await _close_client(client) client = None - counter += 1 - try: await asyncio.wait_for(stop.wait(), timeout=sleep_interval) except asyncio.TimeoutError: From ec674b869a036a2107ff696889369583074827b9 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Mon, 20 Apr 2026 16:30:08 +0000 Subject: [PATCH 278/282] only recreate client if closingerror --- .../requirer-charm/src/continuous_writes.py | 27 +++++++++---------- 1 file changed, 13 insertions(+), 14 deletions(-) diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py index 9f88936..2831ef6 100644 --- a/tests/integration/clients/requirer-charm/src/continuous_writes.py +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -41,6 +41,7 @@ from glide import ( AdvancedGlideClientConfiguration, BackoffStrategy, + ClosingError, GlideClient, GlideClientConfiguration, NodeAddress, @@ -224,7 +225,7 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: loop.add_signal_handler(signal.SIGINT, stop.set) loop.add_signal_handler(signal.SIGUSR1, reload.set) - client: GlideClient | None = await _make_client(config) + client: GlideClient = await _make_client(config) counter, count = await _initial_count(config, client) last_written = counter - 1 logger.info( @@ -233,27 +234,25 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: try: while not stop.is_set(): - if reload.is_set(): - reload.clear() - config = _try_reload(config) - await _close_client(client) - client = None - try: - if client is None: - logger.warning( - "Client is none for counter=%d, attempting to reconnect...", counter - ) + if reload.is_set(): + reload.clear() + config = _try_reload(config) + await _close_client(client) client = await _make_client(config) last_written, count = await _write_one(client, counter) _write_state_atomic(last_written, count) logger.info("Wrote %d (list len=%d)", counter, count) counter += 1 + except ClosingError as exc: + logger.warning( + "ClosingError for counter=%d, will retry: %s", + counter, + exc, + ) + client = await _make_client(config) except Exception as exc: - # Write failed — retry the same counter value on the next iteration. logger.warning("Write failed for counter=%d, will retry: %s", counter, exc) - await _close_client(client) - client = None try: await asyncio.wait_for(stop.wait(), timeout=sleep_interval) From e603c7f08a0616d08d4cdae68b82e8bebf2c4ac0 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 21 Apr 2026 08:22:46 +0000 Subject: [PATCH 279/282] fix cw on failover --- .../clients/requirer-charm/src/continuous_writes.py | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py index 2831ef6..92f6e7b 100644 --- a/tests/integration/clients/requirer-charm/src/continuous_writes.py +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -253,6 +253,14 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: client = await _make_client(config) except Exception as exc: logger.warning("Write failed for counter=%d, will retry: %s", counter, exc) + # Glide raises a RequestError which can include multiple causes; + # look for the read-only error which indicates a failover happened + if "ReadOnly: You can't write against a read only replica." in str(exc): + logger.warning( + "Detected read-only error (probably a failover happened), reconnecting to refresh topology..." + ) + await _close_client(client) + client = await _make_client(config) try: await asyncio.wait_for(stop.wait(), timeout=sleep_interval) From 2c189403c85ba1593e1c3649c1e8feace5954b50 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 21 Apr 2026 09:31:43 +0000 Subject: [PATCH 280/282] always recreate client on exception --- .../requirer-charm/src/continuous_writes.py | 21 ++++++------------- 1 file changed, 6 insertions(+), 15 deletions(-) diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py index 92f6e7b..91b0f07 100644 --- a/tests/integration/clients/requirer-charm/src/continuous_writes.py +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -41,7 +41,6 @@ from glide import ( AdvancedGlideClientConfiguration, BackoffStrategy, - ClosingError, GlideClient, GlideClientConfiguration, NodeAddress, @@ -244,23 +243,15 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: _write_state_atomic(last_written, count) logger.info("Wrote %d (list len=%d)", counter, count) counter += 1 - except ClosingError as exc: - logger.warning( - "ClosingError for counter=%d, will retry: %s", - counter, - exc, - ) - client = await _make_client(config) except Exception as exc: logger.warning("Write failed for counter=%d, will retry: %s", counter, exc) - # Glide raises a RequestError which can include multiple causes; - # look for the read-only error which indicates a failover happened - if "ReadOnly: You can't write against a read only replica." in str(exc): - logger.warning( - "Detected read-only error (probably a failover happened), reconnecting to refresh topology..." - ) + # In standalone mode, Glide locks onto the primary node during initialization and does not auto-refresh. + # If the primary fails, the client will time out indefinitely until manually recreated, making long-term client reuse highly unreliable. + try: await _close_client(client) - client = await _make_client(config) + except Exception: + pass + client = await _make_client(config) try: await asyncio.wait_for(stop.wait(), timeout=sleep_interval) From d547a8613632bff4cc83df99afc5b0ed429a6c7c Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Tue, 21 Apr 2026 12:10:45 +0000 Subject: [PATCH 281/282] create client in try block --- .../clients/requirer-charm/src/continuous_writes.py | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tests/integration/clients/requirer-charm/src/continuous_writes.py b/tests/integration/clients/requirer-charm/src/continuous_writes.py index 91b0f07..ae0d53e 100644 --- a/tests/integration/clients/requirer-charm/src/continuous_writes.py +++ b/tests/integration/clients/requirer-charm/src/continuous_writes.py @@ -238,6 +238,8 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: reload.clear() config = _try_reload(config) await _close_client(client) + client = None + if client is None: client = await _make_client(config) last_written, count = await _write_one(client, counter) _write_state_atomic(last_written, count) @@ -251,7 +253,7 @@ async def run(config: DaemonConfig, sleep_interval: float) -> None: await _close_client(client) except Exception: pass - client = await _make_client(config) + client = None try: await asyncio.wait_for(stop.wait(), timeout=sleep_interval) From 535cb65d1081e1b534cd4df3a863c4186a26e9f9 Mon Sep 17 00:00:00 2001 From: Smail Kourta Date: Wed, 22 Apr 2026 07:20:12 +0000 Subject: [PATCH 282/282] refresh snapd to candidate --- src/workload_vm.py | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/workload_vm.py b/src/workload_vm.py index 0b24903..8673cab 100644 --- a/src/workload_vm.py +++ b/src/workload_vm.py @@ -93,6 +93,9 @@ def install(self, revision: str | None = None, retry_and_raise: bool = True) -> revision = str(SNAP_REVISIONS[platform.machine()]) try: + # TODO revesit this logic after snapd update is released + # refresh snapd to use candidate to bypass risv check issue. + snap.add("snapd", channel="candidate") # as long as 26.04 is not stable, we need to install the core26 snap from beta snap.add("core26", channel="beta")