diff --git a/docs/superpowers/plans/2026-04-05-sync-foundation-plan-1.md b/docs/superpowers/plans/2026-04-05-sync-foundation-plan-1.md new file mode 100644 index 00000000..66357a66 --- /dev/null +++ b/docs/superpowers/plans/2026-04-05-sync-foundation-plan-1.md @@ -0,0 +1,4154 @@ +# Branch↔Central Sync — Foundation (Plan 1 of 3) + +> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking. + +**Goal:** Build the foundational scaffolding for branch↔central sync — DocTypes, sync module skeleton, custom fields, role/permissions, install seeding — such that the system can be configured, a connection to central can be verified, and all storage/registry primitives exist. **No data flows yet.** + +**Architecture:** Pluggable adapter pattern. A `Sync Site Config` DocType defines role (Branch/Central) with role-dependent cardinality. A registry child table lists which DocTypes sync with what strategy and conflict rule. Outbox + Watermark + Tombstone DocTypes hold change-capture state. A `pos_next/sync/` Python module provides the engine skeleton (auth helper, transport, registry, BaseSyncAdapter, conflict helpers). No adapters, no scheduled jobs yet — those come in Plan 2 & 3. + +**Tech Stack:** Frappe Framework (Python 3.10+), Frappe ORM, pytest-style tests via `bench execute`, Frappe DocTypes (JSON), Frappe custom fields, Frappe Password fieldtype for encryption at rest. + +**Spec:** `docs/superpowers/specs/2026-04-05-branch-central-architecture-design.md` + +**Prerequisites:** +- POS Next app installed on a Frappe site. +- Testing uses `bench execute` — never `bench run-tests` (wipes data per CLAUDE.md memory). +- Use `yarn` for any JS work (not `npm`). +- Frappe/ERPNext site name on this machine: check with `bench --site list-apps`. + +--- + +## File Structure + +### New DocTypes (all under `pos_next/pos_next/doctype/`) + +| DocType | Purpose | Cardinality | +|---------|---------|-------------| +| `sync_site_config/` | Role, connection config, sync intervals, synced doctypes registry | Singleton on Branch, Multi on Central | +| `sync_doctype_rule/` | Child table: per-entity sync config (direction, cdc, conflict) | Child of Sync Site Config | +| `sync_sibling_branch/` | Child table: read-only list of other branches | Child of Sync Site Config | +| `sync_outbox/` | Pending change events for branch→central push | Many | +| `sync_watermark/` | Per-DocType `last_modified` marker for pull cycles | One per DocType | +| `sync_tombstone/` | Records of deletes to replay | Many | +| `sync_record_state/` | Per-record `last_synced_hash` for conflict detection | One per synced record | +| `sync_field_timestamp/` | Per-field timestamps for Field-Level-LWW | Many (child-like, standalone) | +| `sync_conflict/` | Manual-resolution queue | Many | +| `sync_log/` | Append-only operation log | Many | +| `sync_dead_letter/` | Outbox rows exceeded max retries | Many | +| `sync_history/` | Archived acknowledged outbox rows | Many | + +### New Python module (`pos_next/sync/`) + +| File | Responsibility | +|------|----------------| +| `__init__.py` | module marker | +| `auth.py` | `SyncSession` class: login/session/retry against central | +| `transport.py` | HTTP client wrapping `requests`: timeout, retry, auth injection | +| `registry.py` | Reads `Sync DocType Rule`, returns adapter class for a doctype | +| `adapters/__init__.py` | Registers adapters in a dict | +| `adapters/base.py` | `BaseSyncAdapter` abstract class | +| `conflict.py` | `resolve(local, incoming, rule)` → winner dict; hash helpers | +| `exceptions.py` | `SyncAuthError`, `SyncTransportError`, `SyncConflictError`, etc. | +| `payload.py` | Serialize/deserialize doc snapshots with children; hash computation | +| `seeds.py` | Seeded default `synced_doctypes` rules installed at setup | +| `defaults.py` | Centralized constants (intervals, retry policy, batch sizes) | + +### Modified files + +| File | What changes | +|------|--------------| +| `pos_next/hooks.py` | Add `after_install` hook for seeds; fixtures list updates | +| `pos_next/patches.txt` | Add sync foundation patches (post_model_sync) | +| `pos_next/install.py` | Call sync setup in install flow | + +### New custom fields (installed via a patch) + +On **Sales Invoice**, **Payment Entry**, **Stock Ledger Entry**, **POS Opening Shift**, **POS Closing Shift**, **Customer**: + +| Field | Type | Notes | +|-------|------|-------| +| `sync_uuid` | Data, unique indexed | UUID v4, set at creation | +| `origin_branch` | Data | `branch_code` of originating site | +| `synced_from_failover` | Check | 1 when central wrote as proxy | + +### New patches (`pos_next/patches/v2_0_0/`) + +| File | Purpose | +|------|---------| +| `install_sync_foundation.py` | Create Sync Site Config DocTypes (via migrate), seed default rules | +| `add_sync_custom_fields.py` | Install sync_uuid, origin_branch, synced_from_failover custom fields | +| `backfill_sync_uuid.py` | Fill sync_uuid on existing transaction rows (idempotent, batched) | +| `create_sync_agent_role.py` | Create `POS Next Sync Agent` role with seeded permissions | + +### New tests + +| Test file | Covers | +|-----------|--------| +| `pos_next/sync/tests/test_sync_site_config.py` | Cardinality, role validation, seeding | +| `pos_next/sync/tests/test_outbox.py` | Compaction on write, terminal-state inserts | +| `pos_next/sync/tests/test_watermark.py` | Watermark CRUD, tombstone application | +| `pos_next/sync/tests/test_conflict.py` | Each conflict strategy (LWW, Central-Wins, Branch-Wins, Field-LWW, Manual) | +| `pos_next/sync/tests/test_payload.py` | Serialize/hash stability, children handling | +| `pos_next/sync/tests/test_auth.py` | Login, retry-on-401, in-memory session caching | +| `pos_next/sync/tests/test_registry.py` | Adapter lookup, missing-adapter handling | +| `pos_next/sync/tests/test_base_adapter.py` | Default serialize/apply/conflict_key behavior | +| `pos_next/sync/tests/test_custom_fields.py` | sync_uuid auto-generation, uniqueness | +| `pos_next/sync/tests/test_backfill.py` | Backfill idempotency | +| `pos_next/sync/tests/test_seeds.py` | Default rules seeded correctly | + +--- + +## Running Tests + +All tests are run via `bench execute` (per CLAUDE.md memory — never use `bench run-tests`): + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_sync_site_config.run_all +``` + +Each test module exposes a `run_all()` function that calls every test function and prints PASS/FAIL. This keeps data isolated (tests create + delete their own fixtures). + +--- + +## Tasks + +### Task 1: Create `Sync DocType Rule` child DocType + +**Files:** +- Create: `pos_next/pos_next/doctype/sync_doctype_rule/__init__.py` +- Create: `pos_next/pos_next/doctype/sync_doctype_rule/sync_doctype_rule.json` +- Create: `pos_next/pos_next/doctype/sync_doctype_rule/sync_doctype_rule.py` + +- [ ] **Step 1: Create empty `__init__.py`** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_doctype_rule +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_doctype_rule/__init__.py +``` + +- [ ] **Step 2: Create DocType JSON** + +File: `pos_next/pos_next/doctype/sync_doctype_rule/sync_doctype_rule.json` + +```json +{ + "actions": [], + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "doctype_name", + "direction", + "cdc_strategy", + "conflict_rule", + "priority", + "batch_size", + "enabled" + ], + "fields": [ + { + "fieldname": "doctype_name", + "fieldtype": "Link", + "in_list_view": 1, + "label": "DocType", + "options": "DocType", + "reqd": 1 + }, + { + "fieldname": "direction", + "fieldtype": "Select", + "in_list_view": 1, + "label": "Direction", + "options": "Central→Branch\nBranch→Central\nBidirectional", + "reqd": 1 + }, + { + "fieldname": "cdc_strategy", + "fieldtype": "Select", + "in_list_view": 1, + "label": "CDC Strategy", + "options": "Outbox\nWatermark", + "reqd": 1 + }, + { + "fieldname": "conflict_rule", + "fieldtype": "Select", + "label": "Conflict Rule", + "options": "Last-Write-Wins\nCentral-Wins\nBranch-Wins\nField-Level-LWW\nManual", + "reqd": 1 + }, + { + "default": "100", + "fieldname": "priority", + "fieldtype": "Int", + "in_list_view": 1, + "label": "Priority" + }, + { + "default": "100", + "fieldname": "batch_size", + "fieldtype": "Int", + "label": "Batch Size" + }, + { + "default": "1", + "fieldname": "enabled", + "fieldtype": "Check", + "in_list_view": 1, + "label": "Enabled" + } + ], + "index_web_pages_for_search": 0, + "istable": 1, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync DocType Rule", + "owner": "Administrator", + "permissions": [], + "sort_field": "priority", + "sort_order": "ASC", + "states": [], + "track_changes": 0 +} +``` + +- [ ] **Step 3: Create DocType Python controller** + +File: `pos_next/pos_next/doctype/sync_doctype_rule/sync_doctype_rule.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from frappe.model.document import Document + + +class SyncDocTypeRule(Document): + """Child table row describing how one DocType participates in sync.""" + pass +``` + +- [ ] **Step 4: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/pos_next/doctype/sync_doctype_rule/ +git commit -m "feat(sync): add Sync DocType Rule child doctype" +``` + +--- + +### Task 2: Create `Sync Sibling Branch` child DocType + +**Files:** +- Create: `pos_next/pos_next/doctype/sync_sibling_branch/__init__.py` +- Create: `pos_next/pos_next/doctype/sync_sibling_branch/sync_sibling_branch.json` +- Create: `pos_next/pos_next/doctype/sync_sibling_branch/sync_sibling_branch.py` + +- [ ] **Step 1: Create directory and empty init** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_sibling_branch +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_sibling_branch/__init__.py +``` + +- [ ] **Step 2: Create DocType JSON** + +File: `pos_next/pos_next/doctype/sync_sibling_branch/sync_sibling_branch.json` + +```json +{ + "actions": [], + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "branch_code", + "branch", + "branch_url" + ], + "fields": [ + { + "fieldname": "branch_code", + "fieldtype": "Data", + "in_list_view": 1, + "label": "Branch Code", + "read_only": 1, + "reqd": 1 + }, + { + "fieldname": "branch", + "fieldtype": "Link", + "in_list_view": 1, + "label": "Branch", + "options": "Branch", + "read_only": 1 + }, + { + "fieldname": "branch_url", + "fieldtype": "Data", + "label": "Branch URL", + "read_only": 1 + } + ], + "index_web_pages_for_search": 0, + "istable": 1, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Sibling Branch", + "owner": "Administrator", + "permissions": [], + "sort_field": "branch_code", + "sort_order": "ASC", + "states": [], + "track_changes": 0 +} +``` + +- [ ] **Step 3: Create Python controller** + +File: `pos_next/pos_next/doctype/sync_sibling_branch/sync_sibling_branch.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from frappe.model.document import Document + + +class SyncSiblingBranch(Document): + """Read-only list entry for another branch, synced down from central.""" + pass +``` + +- [ ] **Step 4: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/pos_next/doctype/sync_sibling_branch/ +git commit -m "feat(sync): add Sync Sibling Branch child doctype" +``` + +--- + +### Task 3: Create `Sync Site Config` DocType with cardinality validation + +**Files:** +- Create: `pos_next/pos_next/doctype/sync_site_config/__init__.py` +- Create: `pos_next/pos_next/doctype/sync_site_config/sync_site_config.json` +- Create: `pos_next/pos_next/doctype/sync_site_config/sync_site_config.py` +- Create: `pos_next/pos_next/doctype/sync_site_config/sync_site_config.js` +- Create: `pos_next/sync/tests/__init__.py` +- Create: `pos_next/sync/tests/test_sync_site_config.py` + +- [ ] **Step 1: Create sync module + tests directory structure** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/sync/tests +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/sync/__init__.py +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/sync/tests/__init__.py +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_site_config +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_site_config/__init__.py +``` + +- [ ] **Step 2: Write failing test — cardinality** + +File: `pos_next/sync/tests/test_sync_site_config.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.exceptions import ValidationError + + +def _cleanup(): + """Remove all Sync Site Config rows (for test isolation).""" + frappe.db.delete("Sync Site Config") + frappe.db.commit() + + +def test_branch_is_singleton(): + """A Branch-role Sync Site Config can only exist once per site.""" + _cleanup() + try: + doc1 = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Branch", + "branch_code": "CAI", + "enabled": 1, + "central_url": "https://central.test", + "sync_username": "sync@test.com", + "sync_password": "secret123", + }) + doc1.insert(ignore_permissions=True) + + doc2 = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Branch", + "branch_code": "ALX", + "enabled": 1, + "central_url": "https://central.test", + "sync_username": "sync2@test.com", + "sync_password": "secret456", + }) + + raised = False + try: + doc2.insert(ignore_permissions=True) + except ValidationError as e: + raised = True + assert "Branch" in str(e), f"Expected branch-singleton error, got: {e}" + + assert raised, "Second Branch-role config should have been rejected" + print("PASS: test_branch_is_singleton") + finally: + _cleanup() + + +def test_central_allows_multiple(): + """Central-role allows multiple Sync Site Config rows (one per branch).""" + _cleanup() + try: + for code in ("CAI", "ALX", "HQ"): + doc = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Central", + "branch_code": code, + "enabled": 1, + }) + doc.insert(ignore_permissions=True) + count = frappe.db.count("Sync Site Config") + assert count == 3, f"Expected 3 Central rows, got {count}" + print("PASS: test_central_allows_multiple") + finally: + _cleanup() + + +def test_branch_code_unique(): + """branch_code must be unique across Sync Site Config rows.""" + _cleanup() + try: + doc1 = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Central", + "branch_code": "CAI", + "enabled": 1, + }) + doc1.insert(ignore_permissions=True) + + doc2 = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Central", + "branch_code": "CAI", + "enabled": 1, + }) + raised = False + try: + doc2.insert(ignore_permissions=True) + except Exception: + raised = True + assert raised, "Duplicate branch_code should be rejected" + print("PASS: test_branch_code_unique") + finally: + _cleanup() + + +def test_https_enforced(): + """central_url must use https:// scheme.""" + _cleanup() + try: + doc = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Branch", + "branch_code": "CAI", + "enabled": 1, + "central_url": "http://insecure.test", + "sync_username": "sync@test.com", + "sync_password": "secret", + }) + raised = False + try: + doc.insert(ignore_permissions=True) + except ValidationError as e: + raised = True + assert "https" in str(e).lower() + assert raised, "http:// URL should have been rejected" + print("PASS: test_https_enforced") + finally: + _cleanup() + + +def run_all(): + test_branch_is_singleton() + test_central_allows_multiple() + test_branch_code_unique() + test_https_enforced() + print("\nAll Sync Site Config tests PASSED") +``` + +- [ ] **Step 3: Run test to verify it fails (DocType doesn't exist yet)** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_sync_site_config.run_all +``` + +Expected: FAIL — "DocType Sync Site Config not found" or similar. + +- [ ] **Step 4: Create Sync Site Config DocType JSON** + +File: `pos_next/pos_next/doctype/sync_site_config/sync_site_config.json` + +```json +{ + "actions": [], + "autoname": "field:branch_code", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "site_role", + "branch_code", + "branch", + "enabled", + "section_break_central", + "central_url", + "sync_username", + "sync_password", + "column_break_central", + "push_interval_seconds", + "pull_masters_interval_seconds", + "pull_failover_interval_seconds", + "section_break_status", + "last_push_at", + "last_pull_masters_at", + "last_pull_failover_at", + "column_break_status", + "outbox_depth", + "last_sync_error", + "section_break_siblings", + "sibling_branches", + "section_break_central_only", + "registered_branch_url", + "notes", + "section_break_registry", + "synced_doctypes" + ], + "fields": [ + { + "fieldname": "site_role", + "fieldtype": "Select", + "in_list_view": 1, + "label": "Site Role", + "options": "Branch\nCentral", + "reqd": 1 + }, + { + "fieldname": "branch_code", + "fieldtype": "Data", + "in_list_view": 1, + "label": "Branch Code", + "reqd": 1, + "unique": 1 + }, + { + "fieldname": "branch", + "fieldtype": "Link", + "label": "Branch", + "options": "Branch" + }, + { + "default": "1", + "fieldname": "enabled", + "fieldtype": "Check", + "label": "Enabled" + }, + { + "depends_on": "eval:doc.site_role==\"Branch\"", + "fieldname": "section_break_central", + "fieldtype": "Section Break", + "label": "Central Connection" + }, + { + "depends_on": "eval:doc.site_role==\"Branch\"", + "fieldname": "central_url", + "fieldtype": "Data", + "label": "Central URL", + "mandatory_depends_on": "eval:doc.site_role==\"Branch\"" + }, + { + "depends_on": "eval:doc.site_role==\"Branch\"", + "fieldname": "sync_username", + "fieldtype": "Data", + "label": "Sync Username", + "mandatory_depends_on": "eval:doc.site_role==\"Branch\"" + }, + { + "depends_on": "eval:doc.site_role==\"Branch\"", + "fieldname": "sync_password", + "fieldtype": "Password", + "label": "Sync Password", + "mandatory_depends_on": "eval:doc.site_role==\"Branch\"" + }, + { + "fieldname": "column_break_central", + "fieldtype": "Column Break" + }, + { + "default": "60", + "fieldname": "push_interval_seconds", + "fieldtype": "Int", + "label": "Push Interval (seconds)" + }, + { + "default": "300", + "fieldname": "pull_masters_interval_seconds", + "fieldtype": "Int", + "label": "Pull Masters Interval (seconds)" + }, + { + "default": "120", + "fieldname": "pull_failover_interval_seconds", + "fieldtype": "Int", + "label": "Pull Failover Interval (seconds)" + }, + { + "collapsible": 1, + "fieldname": "section_break_status", + "fieldtype": "Section Break", + "label": "Status" + }, + { + "fieldname": "last_push_at", + "fieldtype": "Datetime", + "label": "Last Push At", + "read_only": 1 + }, + { + "fieldname": "last_pull_masters_at", + "fieldtype": "Datetime", + "label": "Last Pull Masters At", + "read_only": 1 + }, + { + "fieldname": "last_pull_failover_at", + "fieldtype": "Datetime", + "label": "Last Pull Failover At", + "read_only": 1 + }, + { + "fieldname": "column_break_status", + "fieldtype": "Column Break" + }, + { + "fieldname": "outbox_depth", + "fieldtype": "Int", + "label": "Outbox Depth", + "read_only": 1 + }, + { + "fieldname": "last_sync_error", + "fieldtype": "Small Text", + "label": "Last Sync Error", + "read_only": 1 + }, + { + "collapsible": 1, + "depends_on": "eval:doc.site_role==\"Branch\"", + "fieldname": "section_break_siblings", + "fieldtype": "Section Break", + "label": "Sibling Branches (Read-Only)" + }, + { + "fieldname": "sibling_branches", + "fieldtype": "Table", + "label": "Sibling Branches", + "options": "Sync Sibling Branch", + "read_only": 1 + }, + { + "collapsible": 1, + "depends_on": "eval:doc.site_role==\"Central\"", + "fieldname": "section_break_central_only", + "fieldtype": "Section Break", + "label": "Central-Only" + }, + { + "fieldname": "registered_branch_url", + "fieldtype": "Data", + "label": "Registered Branch URL" + }, + { + "fieldname": "notes", + "fieldtype": "Small Text", + "label": "Notes" + }, + { + "collapsible": 1, + "fieldname": "section_break_registry", + "fieldtype": "Section Break", + "label": "Synced DocTypes Registry" + }, + { + "fieldname": "synced_doctypes", + "fieldtype": "Table", + "label": "Synced DocTypes", + "options": "Sync DocType Rule" + } + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Site Config", + "naming_rule": "By fieldname", + "owner": "Administrator", + "permissions": [ + { + "create": 1, + "delete": 1, + "email": 1, + "export": 1, + "print": 1, + "read": 1, + "report": 1, + "role": "System Manager", + "share": 1, + "write": 1 + } + ], + "row_format": "Dynamic", + "sort_field": "modified", + "sort_order": "DESC", + "states": [], + "track_changes": 1 +} +``` + +- [ ] **Step 5: Create Python controller with cardinality validation** + +File: `pos_next/pos_next/doctype/sync_site_config/sync_site_config.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe import _ +from frappe.model.document import Document + + +class SyncSiteConfig(Document): + """ + Sync configuration record. + + Cardinality depends on site_role: + - Branch: singleton (only one record allowed per site) + - Central: multi-record (one per registered branch) + """ + + def validate(self): + self._validate_cardinality() + self._validate_https_url() + self._validate_branch_code() + + def _validate_cardinality(self): + """A Branch-role record must be singleton; Central allows many.""" + if self.site_role != "Branch": + return + # Count other Branch-role records (excluding self on update) + existing = frappe.db.sql( + """ + SELECT name FROM `tabSync Site Config` + WHERE site_role = 'Branch' AND name != %s + """, + (self.name or "",), + ) + if existing: + frappe.throw( + _( + "Only one Sync Site Config with site_role=Branch is allowed " + "per site. Existing record: {0}" + ).format(existing[0][0]), + title=_("Branch Config Already Exists"), + ) + + def _validate_https_url(self): + """central_url must use https:// scheme.""" + if self.site_role != "Branch": + return + if not self.central_url: + return + if not self.central_url.startswith("https://"): + frappe.throw( + _("central_url must use https:// scheme, got: {0}").format(self.central_url), + title=_("Insecure URL"), + ) + + def _validate_branch_code(self): + """branch_code must match [A-Z0-9]{2,16}.""" + import re + if not self.branch_code: + return + if not re.match(r"^[A-Z0-9]{2,16}$", self.branch_code): + frappe.throw( + _("branch_code must be 2-16 uppercase letters/digits, got: {0}").format( + self.branch_code + ), + title=_("Invalid Branch Code"), + ) +``` + +- [ ] **Step 6: Create minimal JS file (required by Frappe)** + +File: `pos_next/pos_next/doctype/sync_site_config/sync_site_config.js` + +```javascript +// Copyright (c) 2026, BrainWise and contributors +// For license information, please see license.txt + +frappe.ui.form.on("Sync Site Config", { + refresh(frm) { + // Test Sync Connection button will be added in Task 11 + } +}); +``` + +- [ ] **Step 7: Run `bench migrate` to install the DocTypes** + +```bash +cd /home/ubuntu/frappe-bench +bench --site migrate +``` + +Expected: DocTypes "Sync DocType Rule", "Sync Sibling Branch", "Sync Site Config" created. + +- [ ] **Step 8: Run tests to verify they pass** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_sync_site_config.run_all +``` + +Expected output: +``` +PASS: test_branch_is_singleton +PASS: test_central_allows_multiple +PASS: test_branch_code_unique +PASS: test_https_enforced + +All Sync Site Config tests PASSED +``` + +- [ ] **Step 9: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/pos_next/doctype/sync_site_config/ pos_next/sync/ +git commit -m "feat(sync): add Sync Site Config doctype with cardinality validation" +``` + +--- + +### Task 4: Create `Sync Outbox` DocType with compaction on insert + +**Files:** +- Create: `pos_next/pos_next/doctype/sync_outbox/__init__.py` +- Create: `pos_next/pos_next/doctype/sync_outbox/sync_outbox.json` +- Create: `pos_next/pos_next/doctype/sync_outbox/sync_outbox.py` +- Create: `pos_next/sync/tests/test_outbox.py` + +- [ ] **Step 1: Write failing tests for outbox** + +File: `pos_next/sync/tests/test_outbox.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +def _cleanup(): + frappe.db.delete("Sync Outbox") + frappe.db.commit() + + +def test_insert_creates_row(): + """Creating an outbox row is straightforward.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + row = SyncOutbox.enqueue( + reference_doctype="Sales Invoice", + reference_name="SINV-CAI-2026-00001", + operation="insert", + payload='{"name":"SINV-CAI-2026-00001","total":100}', + priority=50, + ) + assert row.sync_status == "pending" + assert row.attempts == 0 + print("PASS: test_insert_creates_row") + finally: + _cleanup() + + +def test_compaction_on_update(): + """Multiple updates to same (doctype, name, 'update') collapse to one pending row.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + SyncOutbox.enqueue( + reference_doctype="Customer", + reference_name="Walk-In Cairo", + operation="update", + payload='{"name":"Walk-In Cairo","v":1}', + priority=50, + ) + SyncOutbox.enqueue( + reference_doctype="Customer", + reference_name="Walk-In Cairo", + operation="update", + payload='{"name":"Walk-In Cairo","v":2}', + priority=50, + ) + SyncOutbox.enqueue( + reference_doctype="Customer", + reference_name="Walk-In Cairo", + operation="update", + payload='{"name":"Walk-In Cairo","v":3}', + priority=50, + ) + count = frappe.db.count( + "Sync Outbox", + {"reference_doctype": "Customer", "reference_name": "Walk-In Cairo", "sync_status": "pending"}, + ) + assert count == 1, f"Expected 1 compacted row, got {count}" + + payload = frappe.db.get_value( + "Sync Outbox", + {"reference_doctype": "Customer", "reference_name": "Walk-In Cairo"}, + "payload", + ) + assert '"v":3' in payload, f"Latest payload should win, got: {payload}" + print("PASS: test_compaction_on_update") + finally: + _cleanup() + + +def test_terminal_ops_always_insert(): + """submit/cancel/delete never compact — they always insert new rows.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + for op in ("submit", "cancel", "delete"): + SyncOutbox.enqueue( + reference_doctype="Sales Invoice", + reference_name="SINV-CAI-2026-00001", + operation=op, + payload='{"name":"SINV-CAI-2026-00001"}', + priority=50, + ) + count = frappe.db.count( + "Sync Outbox", + {"reference_doctype": "Sales Invoice", "reference_name": "SINV-CAI-2026-00001"}, + ) + assert count == 3, f"Expected 3 terminal rows, got {count}" + print("PASS: test_terminal_ops_always_insert") + finally: + _cleanup() + + +def test_acked_row_not_compacted(): + """An acked row is ignored by compaction; new update creates a fresh pending row.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + row = SyncOutbox.enqueue( + reference_doctype="Customer", + reference_name="C1", + operation="update", + payload='{"v":1}', + priority=50, + ) + # Simulate successful sync + frappe.db.set_value("Sync Outbox", row.name, "sync_status", "acked") + frappe.db.commit() + + SyncOutbox.enqueue( + reference_doctype="Customer", + reference_name="C1", + operation="update", + payload='{"v":2}', + priority=50, + ) + pending = frappe.db.count( + "Sync Outbox", + {"reference_doctype": "Customer", "reference_name": "C1", "sync_status": "pending"}, + ) + acked = frappe.db.count( + "Sync Outbox", + {"reference_doctype": "Customer", "reference_name": "C1", "sync_status": "acked"}, + ) + assert pending == 1 and acked == 1, f"Expected pending=1, acked=1, got pending={pending}, acked={acked}" + print("PASS: test_acked_row_not_compacted") + finally: + _cleanup() + + +def run_all(): + test_insert_creates_row() + test_compaction_on_update() + test_terminal_ops_always_insert() + test_acked_row_not_compacted() + print("\nAll Sync Outbox tests PASSED") +``` + +- [ ] **Step 2: Run tests to confirm they fail** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_outbox.run_all +``` + +Expected: FAIL — "DocType Sync Outbox not found" or ImportError. + +- [ ] **Step 3: Create Sync Outbox DocType directory** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_outbox +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_outbox/__init__.py +``` + +- [ ] **Step 4: Create Sync Outbox DocType JSON** + +File: `pos_next/pos_next/doctype/sync_outbox/sync_outbox.json` + +```json +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "reference_doctype", + "reference_name", + "operation", + "sync_status", + "priority", + "attempts", + "next_attempt_at", + "acked_at", + "last_error", + "payload" + ], + "fields": [ + { + "fieldname": "reference_doctype", + "fieldtype": "Link", + "in_list_view": 1, + "in_standard_filter": 1, + "label": "Reference DocType", + "options": "DocType", + "reqd": 1 + }, + { + "fieldname": "reference_name", + "fieldtype": "Data", + "in_list_view": 1, + "in_standard_filter": 1, + "label": "Reference Name", + "reqd": 1 + }, + { + "fieldname": "operation", + "fieldtype": "Select", + "in_list_view": 1, + "in_standard_filter": 1, + "label": "Operation", + "options": "insert\nupdate\nsubmit\ncancel\ndelete", + "reqd": 1 + }, + { + "default": "pending", + "fieldname": "sync_status", + "fieldtype": "Select", + "in_list_view": 1, + "in_standard_filter": 1, + "label": "Sync Status", + "options": "pending\nsyncing\nacked\nfailed\ndead" + }, + { + "default": "100", + "fieldname": "priority", + "fieldtype": "Int", + "in_list_view": 1, + "label": "Priority" + }, + { + "default": "0", + "fieldname": "attempts", + "fieldtype": "Int", + "label": "Attempts" + }, + { + "fieldname": "next_attempt_at", + "fieldtype": "Datetime", + "label": "Next Attempt At" + }, + { + "fieldname": "acked_at", + "fieldtype": "Datetime", + "label": "Acked At", + "read_only": 1 + }, + { + "fieldname": "last_error", + "fieldtype": "Small Text", + "label": "Last Error" + }, + { + "fieldname": "payload", + "fieldtype": "Long Text", + "label": "Payload (JSON)" + } + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Outbox", + "owner": "Administrator", + "permissions": [ + { + "create": 1, + "delete": 1, + "email": 1, + "export": 1, + "print": 1, + "read": 1, + "report": 1, + "role": "System Manager", + "share": 1, + "write": 1 + } + ], + "row_format": "Dynamic", + "sort_field": "creation", + "sort_order": "DESC", + "states": [], + "track_changes": 0 +} +``` + +- [ ] **Step 5: Create Sync Outbox Python controller with `enqueue` classmethod** + +File: `pos_next/pos_next/doctype/sync_outbox/sync_outbox.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.model.document import Document + + +TERMINAL_OPERATIONS = {"submit", "cancel", "delete"} + + +class SyncOutbox(Document): + """Pending change event awaiting push to central.""" + + @classmethod + def enqueue(cls, reference_doctype, reference_name, operation, payload, priority=100): + """ + Add a change event to the outbox, compacting pending updates to the same record. + + For terminal operations (submit/cancel/delete), always insert. + For insert/update, if a pending row already exists for this + (reference_doctype, reference_name, operation), update its payload in place. + + Returns the created or updated Sync Outbox document. + """ + if operation not in TERMINAL_OPERATIONS: + existing = frappe.db.get_value( + "Sync Outbox", + { + "reference_doctype": reference_doctype, + "reference_name": reference_name, + "operation": operation, + "sync_status": "pending", + }, + "name", + ) + if existing: + doc = frappe.get_doc("Sync Outbox", existing) + doc.payload = payload + doc.priority = priority + doc.save(ignore_permissions=True) + return doc + + doc = frappe.get_doc({ + "doctype": "Sync Outbox", + "reference_doctype": reference_doctype, + "reference_name": reference_name, + "operation": operation, + "payload": payload, + "priority": priority, + "sync_status": "pending", + "attempts": 0, + }) + doc.insert(ignore_permissions=True) + return doc +``` + +- [ ] **Step 6: Run `bench migrate` to install** + +```bash +cd /home/ubuntu/frappe-bench +bench --site migrate +``` + +- [ ] **Step 7: Run tests to verify they pass** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_outbox.run_all +``` + +Expected: all 4 tests PASS. + +- [ ] **Step 8: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/pos_next/doctype/sync_outbox/ pos_next/sync/tests/test_outbox.py +git commit -m "feat(sync): add Sync Outbox with compaction on pending updates" +``` + +--- + +### Task 5: Create `Sync Watermark` + `Sync Tombstone` DocTypes + +**Files:** +- Create: `pos_next/pos_next/doctype/sync_watermark/` (init, json, py) +- Create: `pos_next/pos_next/doctype/sync_tombstone/` (init, json, py) +- Create: `pos_next/sync/tests/test_watermark.py` + +- [ ] **Step 1: Write failing tests** + +File: `pos_next/sync/tests/test_watermark.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.utils import now_datetime + + +def _cleanup(): + frappe.db.delete("Sync Watermark") + frappe.db.delete("Sync Tombstone") + frappe.db.commit() + + +def test_watermark_upsert(): + """Watermark CRUD via upsert helper.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_watermark.sync_watermark import SyncWatermark + ts = now_datetime() + row = SyncWatermark.upsert("Item", ts, records_pulled=10) + assert row.doctype_name == "Item" + assert row.records_pulled == 10 + + ts2 = now_datetime() + row2 = SyncWatermark.upsert("Item", ts2, records_pulled=5) + assert row2.name == row.name, "upsert should update existing row, not create new" + assert row2.records_pulled == 5 + print("PASS: test_watermark_upsert") + finally: + _cleanup() + + +def test_watermark_unique_per_doctype(): + """Only one Sync Watermark row per DocType.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_watermark.sync_watermark import SyncWatermark + ts = now_datetime() + SyncWatermark.upsert("Item", ts) + SyncWatermark.upsert("Customer", ts) + SyncWatermark.upsert("Item", ts) # should update, not insert + count = frappe.db.count("Sync Watermark") + assert count == 2, f"Expected 2 rows (Item, Customer), got {count}" + print("PASS: test_watermark_unique_per_doctype") + finally: + _cleanup() + + +def test_tombstone_record(): + """Creating tombstones is simple.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_tombstone.sync_tombstone import SyncTombstone + t = SyncTombstone.record("Item", "ITEM-001") + assert t.reference_doctype == "Item" + assert t.reference_name == "ITEM-001" + assert t.deleted_at is not None + print("PASS: test_tombstone_record") + finally: + _cleanup() + + +def run_all(): + test_watermark_upsert() + test_watermark_unique_per_doctype() + test_tombstone_record() + print("\nAll Watermark/Tombstone tests PASSED") +``` + +- [ ] **Step 2: Run test to confirm failure** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_watermark.run_all +``` + +Expected: FAIL — doctypes missing. + +- [ ] **Step 3: Create Sync Watermark DocType** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_watermark +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_watermark/__init__.py +``` + +File: `pos_next/pos_next/doctype/sync_watermark/sync_watermark.json` + +```json +{ + "actions": [], + "autoname": "field:doctype_name", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "doctype_name", + "last_modified", + "last_pulled_at", + "records_pulled" + ], + "fields": [ + { + "fieldname": "doctype_name", + "fieldtype": "Link", + "in_list_view": 1, + "label": "DocType", + "options": "DocType", + "reqd": 1, + "unique": 1 + }, + { + "fieldname": "last_modified", + "fieldtype": "Datetime", + "in_list_view": 1, + "label": "Last Modified" + }, + { + "fieldname": "last_pulled_at", + "fieldtype": "Datetime", + "in_list_view": 1, + "label": "Last Pulled At" + }, + { + "default": "0", + "fieldname": "records_pulled", + "fieldtype": "Int", + "in_list_view": 1, + "label": "Records Pulled" + } + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Watermark", + "naming_rule": "By fieldname", + "owner": "Administrator", + "permissions": [ + { + "create": 1, + "delete": 1, + "read": 1, + "report": 1, + "role": "System Manager", + "write": 1 + } + ], + "row_format": "Dynamic", + "sort_field": "modified", + "sort_order": "DESC", + "states": [], + "track_changes": 0 +} +``` + +File: `pos_next/pos_next/doctype/sync_watermark/sync_watermark.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.model.document import Document +from frappe.utils import now_datetime + + +class SyncWatermark(Document): + """Per-DocType watermark for master pull cycles.""" + + @classmethod + def upsert(cls, doctype_name, last_modified, records_pulled=0): + """Insert or update the watermark row for a DocType.""" + existing = frappe.db.get_value("Sync Watermark", {"doctype_name": doctype_name}, "name") + if existing: + doc = frappe.get_doc("Sync Watermark", existing) + doc.last_modified = last_modified + doc.last_pulled_at = now_datetime() + doc.records_pulled = records_pulled + doc.save(ignore_permissions=True) + return doc + doc = frappe.get_doc({ + "doctype": "Sync Watermark", + "doctype_name": doctype_name, + "last_modified": last_modified, + "last_pulled_at": now_datetime(), + "records_pulled": records_pulled, + }) + doc.insert(ignore_permissions=True) + return doc + + @classmethod + def get_for(cls, doctype_name): + """Fetch the watermark row for a DocType, or None.""" + name = frappe.db.get_value("Sync Watermark", {"doctype_name": doctype_name}, "name") + return frappe.get_doc("Sync Watermark", name) if name else None +``` + +- [ ] **Step 4: Create Sync Tombstone DocType** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_tombstone +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_tombstone/__init__.py +``` + +File: `pos_next/pos_next/doctype/sync_tombstone/sync_tombstone.json` + +```json +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "reference_doctype", + "reference_name", + "deleted_at" + ], + "fields": [ + { + "fieldname": "reference_doctype", + "fieldtype": "Link", + "in_list_view": 1, + "in_standard_filter": 1, + "label": "Reference DocType", + "options": "DocType", + "reqd": 1 + }, + { + "fieldname": "reference_name", + "fieldtype": "Data", + "in_list_view": 1, + "in_standard_filter": 1, + "label": "Reference Name", + "reqd": 1 + }, + { + "fieldname": "deleted_at", + "fieldtype": "Datetime", + "in_list_view": 1, + "label": "Deleted At", + "reqd": 1 + } + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Tombstone", + "owner": "Administrator", + "permissions": [ + { + "create": 1, + "delete": 1, + "read": 1, + "report": 1, + "role": "System Manager", + "write": 1 + } + ], + "row_format": "Dynamic", + "sort_field": "deleted_at", + "sort_order": "DESC", + "states": [], + "track_changes": 0 +} +``` + +File: `pos_next/pos_next/doctype/sync_tombstone/sync_tombstone.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.model.document import Document +from frappe.utils import now_datetime + + +class SyncTombstone(Document): + """Record that a master was deleted on central, so branches can replay the delete.""" + + @classmethod + def record(cls, reference_doctype, reference_name): + """Create a tombstone for a deleted record.""" + doc = frappe.get_doc({ + "doctype": "Sync Tombstone", + "reference_doctype": reference_doctype, + "reference_name": reference_name, + "deleted_at": now_datetime(), + }) + doc.insert(ignore_permissions=True) + return doc +``` + +- [ ] **Step 5: Run migrate and tests** + +```bash +cd /home/ubuntu/frappe-bench +bench --site migrate +bench --site execute pos_next.sync.tests.test_watermark.run_all +``` + +Expected: all 3 tests PASS. + +- [ ] **Step 6: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/pos_next/doctype/sync_watermark/ pos_next/pos_next/doctype/sync_tombstone/ pos_next/sync/tests/test_watermark.py +git commit -m "feat(sync): add Sync Watermark and Sync Tombstone doctypes" +``` + +--- + +### Task 6: Create remaining tracking DocTypes (`Sync Record State`, `Sync Field Timestamp`, `Sync Conflict`, `Sync Log`, `Sync Dead Letter`, `Sync History`) + +**Files:** +- Create: `pos_next/pos_next/doctype/sync_record_state/` (init, json, py) +- Create: `pos_next/pos_next/doctype/sync_field_timestamp/` (init, json, py) +- Create: `pos_next/pos_next/doctype/sync_conflict/` (init, json, py) +- Create: `pos_next/pos_next/doctype/sync_log/` (init, json, py) +- Create: `pos_next/pos_next/doctype/sync_dead_letter/` (init, json, py) +- Create: `pos_next/pos_next/doctype/sync_history/` (init, json, py) + +- [ ] **Step 1: Create `Sync Record State` DocType** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_record_state +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_record_state/__init__.py +``` + +File: `pos_next/pos_next/doctype/sync_record_state/sync_record_state.json` + +```json +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "reference_doctype", + "reference_name", + "last_synced_hash", + "last_synced_at", + "last_synced_from" + ], + "fields": [ + { + "fieldname": "reference_doctype", + "fieldtype": "Link", + "in_list_view": 1, + "label": "Reference DocType", + "options": "DocType", + "reqd": 1 + }, + { + "fieldname": "reference_name", + "fieldtype": "Data", + "in_list_view": 1, + "label": "Reference Name", + "reqd": 1 + }, + { + "fieldname": "last_synced_hash", + "fieldtype": "Data", + "label": "Last Synced Hash" + }, + { + "fieldname": "last_synced_at", + "fieldtype": "Datetime", + "label": "Last Synced At" + }, + { + "fieldname": "last_synced_from", + "fieldtype": "Data", + "label": "Last Synced From" + } + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Record State", + "owner": "Administrator", + "permissions": [ + {"create": 1, "delete": 1, "read": 1, "report": 1, "role": "System Manager", "write": 1} + ], + "row_format": "Dynamic", + "sort_field": "modified", + "sort_order": "DESC", + "states": [], + "track_changes": 0 +} +``` + +File: `pos_next/pos_next/doctype/sync_record_state/sync_record_state.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.model.document import Document +from frappe.utils import now_datetime + + +class SyncRecordState(Document): + """Per-record sync tracking: hash + source + timestamp of last successful sync.""" + + @classmethod + def upsert(cls, reference_doctype, reference_name, payload_hash, source): + """Record that a record was just synced; store hash + source.""" + existing = frappe.db.get_value( + "Sync Record State", + {"reference_doctype": reference_doctype, "reference_name": reference_name}, + "name", + ) + if existing: + doc = frappe.get_doc("Sync Record State", existing) + doc.last_synced_hash = payload_hash + doc.last_synced_at = now_datetime() + doc.last_synced_from = source + doc.save(ignore_permissions=True) + return doc + doc = frappe.get_doc({ + "doctype": "Sync Record State", + "reference_doctype": reference_doctype, + "reference_name": reference_name, + "last_synced_hash": payload_hash, + "last_synced_at": now_datetime(), + "last_synced_from": source, + }) + doc.insert(ignore_permissions=True) + return doc + + @classmethod + def get_hash(cls, reference_doctype, reference_name): + """Return the last-synced hash, or None.""" + return frappe.db.get_value( + "Sync Record State", + {"reference_doctype": reference_doctype, "reference_name": reference_name}, + "last_synced_hash", + ) +``` + +- [ ] **Step 2: Create `Sync Field Timestamp` DocType** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_field_timestamp +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_field_timestamp/__init__.py +``` + +File: `pos_next/pos_next/doctype/sync_field_timestamp/sync_field_timestamp.json` + +```json +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "reference_doctype", + "reference_name", + "fieldname", + "modified_at" + ], + "fields": [ + { + "fieldname": "reference_doctype", + "fieldtype": "Link", + "label": "Reference DocType", + "options": "DocType", + "reqd": 1 + }, + { + "fieldname": "reference_name", + "fieldtype": "Data", + "label": "Reference Name", + "reqd": 1 + }, + { + "fieldname": "fieldname", + "fieldtype": "Data", + "label": "Fieldname", + "reqd": 1 + }, + { + "fieldname": "modified_at", + "fieldtype": "Datetime", + "label": "Modified At", + "reqd": 1 + } + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Field Timestamp", + "owner": "Administrator", + "permissions": [ + {"create": 1, "delete": 1, "read": 1, "role": "System Manager", "write": 1} + ], + "row_format": "Dynamic", + "sort_field": "modified", + "sort_order": "DESC", + "states": [], + "track_changes": 0 +} +``` + +File: `pos_next/pos_next/doctype/sync_field_timestamp/sync_field_timestamp.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from frappe.model.document import Document + + +class SyncFieldTimestamp(Document): + """Per-field modification timestamp for Field-Level-LWW conflict resolution.""" + pass +``` + +- [ ] **Step 3: Create `Sync Conflict` DocType** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_conflict +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_conflict/__init__.py +``` + +File: `pos_next/pos_next/doctype/sync_conflict/sync_conflict.json` + +```json +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "reference_doctype", + "reference_name", + "status", + "incoming_from", + "detected_at", + "local_payload", + "incoming_payload", + "resolved_by", + "resolution_notes" + ], + "fields": [ + {"fieldname": "reference_doctype", "fieldtype": "Link", "in_list_view": 1, "label": "Reference DocType", "options": "DocType", "reqd": 1}, + {"fieldname": "reference_name", "fieldtype": "Data", "in_list_view": 1, "label": "Reference Name", "reqd": 1}, + {"fieldname": "status", "fieldtype": "Select", "in_list_view": 1, "label": "Status", "options": "pending\nresolved_local\nresolved_incoming\nresolved_merged", "default": "pending"}, + {"fieldname": "incoming_from", "fieldtype": "Data", "in_list_view": 1, "label": "Incoming From"}, + {"fieldname": "detected_at", "fieldtype": "Datetime", "label": "Detected At"}, + {"fieldname": "local_payload", "fieldtype": "Long Text", "label": "Local Payload"}, + {"fieldname": "incoming_payload", "fieldtype": "Long Text", "label": "Incoming Payload"}, + {"fieldname": "resolved_by", "fieldtype": "Link", "label": "Resolved By", "options": "User"}, + {"fieldname": "resolution_notes", "fieldtype": "Text", "label": "Resolution Notes"} + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Conflict", + "owner": "Administrator", + "permissions": [ + {"create": 1, "delete": 1, "read": 1, "report": 1, "role": "System Manager", "write": 1} + ], + "row_format": "Dynamic", + "sort_field": "detected_at", + "sort_order": "DESC", + "states": [], + "track_changes": 1 +} +``` + +File: `pos_next/pos_next/doctype/sync_conflict/sync_conflict.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from frappe.model.document import Document + + +class SyncConflict(Document): + """Manual-resolution queue entry for sync conflicts.""" + pass +``` + +- [ ] **Step 4: Create `Sync Log` DocType** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_log +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_log/__init__.py +``` + +File: `pos_next/pos_next/doctype/sync_log/sync_log.json` + +```json +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "operation", + "status", + "duration_ms", + "records_touched", + "error", + "context" + ], + "fields": [ + {"fieldname": "operation", "fieldtype": "Data", "in_list_view": 1, "in_standard_filter": 1, "label": "Operation"}, + {"fieldname": "status", "fieldtype": "Select", "in_list_view": 1, "in_standard_filter": 1, "label": "Status", "options": "success\nfailure\npartial"}, + {"fieldname": "duration_ms", "fieldtype": "Int", "in_list_view": 1, "label": "Duration (ms)"}, + {"fieldname": "records_touched", "fieldtype": "Int", "in_list_view": 1, "label": "Records Touched"}, + {"fieldname": "error", "fieldtype": "Small Text", "label": "Error"}, + {"fieldname": "context", "fieldtype": "Long Text", "label": "Context (JSON)"} + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Log", + "owner": "Administrator", + "permissions": [ + {"read": 1, "report": 1, "role": "System Manager"} + ], + "row_format": "Dynamic", + "sort_field": "creation", + "sort_order": "DESC", + "states": [], + "track_changes": 0 +} +``` + +File: `pos_next/pos_next/doctype/sync_log/sync_log.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.model.document import Document + + +class SyncLog(Document): + """Append-only log of sync operations.""" + + @classmethod + def record(cls, operation, status, duration_ms=0, records_touched=0, error=None, context=None): + """Write a log entry. Safe to call from anywhere.""" + import json + doc = frappe.get_doc({ + "doctype": "Sync Log", + "operation": operation, + "status": status, + "duration_ms": duration_ms, + "records_touched": records_touched, + "error": (error or "")[:500], + "context": json.dumps(context) if context else None, + }) + doc.insert(ignore_permissions=True) + return doc +``` + +- [ ] **Step 5: Create `Sync Dead Letter` DocType** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_dead_letter +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_dead_letter/__init__.py +``` + +File: `pos_next/pos_next/doctype/sync_dead_letter/sync_dead_letter.json` + +```json +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "reference_doctype", + "reference_name", + "operation", + "last_error", + "attempts", + "payload", + "moved_at" + ], + "fields": [ + {"fieldname": "reference_doctype", "fieldtype": "Link", "in_list_view": 1, "label": "Reference DocType", "options": "DocType"}, + {"fieldname": "reference_name", "fieldtype": "Data", "in_list_view": 1, "label": "Reference Name"}, + {"fieldname": "operation", "fieldtype": "Data", "in_list_view": 1, "label": "Operation"}, + {"fieldname": "last_error", "fieldtype": "Small Text", "label": "Last Error"}, + {"fieldname": "attempts", "fieldtype": "Int", "label": "Attempts"}, + {"fieldname": "payload", "fieldtype": "Long Text", "label": "Payload"}, + {"fieldname": "moved_at", "fieldtype": "Datetime", "label": "Moved At"} + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Dead Letter", + "owner": "Administrator", + "permissions": [ + {"create": 1, "delete": 1, "read": 1, "report": 1, "role": "System Manager", "write": 1} + ], + "row_format": "Dynamic", + "sort_field": "moved_at", + "sort_order": "DESC", + "states": [], + "track_changes": 0 +} +``` + +File: `pos_next/pos_next/doctype/sync_dead_letter/sync_dead_letter.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from frappe.model.document import Document + + +class SyncDeadLetter(Document): + """Outbox rows that exceeded max retries; awaiting human handling.""" + pass +``` + +- [ ] **Step 6: Create `Sync History` DocType** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_history +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/pos_next/doctype/sync_history/__init__.py +``` + +File: `pos_next/pos_next/doctype/sync_history/sync_history.json` + +```json +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "reference_doctype", + "reference_name", + "operation", + "acked_at", + "attempts", + "payload_hash" + ], + "fields": [ + {"fieldname": "reference_doctype", "fieldtype": "Link", "in_list_view": 1, "label": "Reference DocType", "options": "DocType"}, + {"fieldname": "reference_name", "fieldtype": "Data", "in_list_view": 1, "label": "Reference Name"}, + {"fieldname": "operation", "fieldtype": "Data", "in_list_view": 1, "label": "Operation"}, + {"fieldname": "acked_at", "fieldtype": "Datetime", "in_list_view": 1, "label": "Acked At"}, + {"fieldname": "attempts", "fieldtype": "Int", "label": "Attempts"}, + {"fieldname": "payload_hash", "fieldtype": "Data", "label": "Payload Hash"} + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync History", + "owner": "Administrator", + "permissions": [ + {"read": 1, "report": 1, "role": "System Manager"} + ], + "row_format": "Dynamic", + "sort_field": "acked_at", + "sort_order": "DESC", + "states": [], + "track_changes": 0 +} +``` + +File: `pos_next/pos_next/doctype/sync_history/sync_history.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from frappe.model.document import Document + + +class SyncHistory(Document): + """Archived acknowledged Sync Outbox rows.""" + pass +``` + +- [ ] **Step 7: Run migrate** + +```bash +cd /home/ubuntu/frappe-bench +bench --site migrate +``` + +Expected: all 6 new DocTypes created. + +- [ ] **Step 8: Quick smoke test** + +```bash +bench --site execute 'frappe.db.sql("SELECT COUNT(*) FROM `tabSync Log`")' +``` + +Expected: `((0,),)` — table exists. + +- [ ] **Step 9: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/pos_next/doctype/sync_record_state/ pos_next/pos_next/doctype/sync_field_timestamp/ pos_next/pos_next/doctype/sync_conflict/ pos_next/pos_next/doctype/sync_log/ pos_next/pos_next/doctype/sync_dead_letter/ pos_next/pos_next/doctype/sync_history/ +git commit -m "feat(sync): add tracking doctypes (record state, field timestamp, conflict, log, dead letter, history)" +``` + +--- + +### Task 7: Create `pos_next/sync/` module skeleton — defaults, exceptions, payload helpers + +**Files:** +- Create: `pos_next/sync/defaults.py` +- Create: `pos_next/sync/exceptions.py` +- Create: `pos_next/sync/payload.py` +- Create: `pos_next/sync/tests/test_payload.py` + +- [ ] **Step 1: Create `defaults.py`** + +File: `pos_next/sync/defaults.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Centralized defaults for the sync engine.""" + +DEFAULT_PUSH_INTERVAL_SECONDS = 60 +DEFAULT_PULL_MASTERS_INTERVAL_SECONDS = 300 +DEFAULT_PULL_FAILOVER_INTERVAL_SECONDS = 120 + +DEFAULT_BATCH_SIZE = 100 +MAX_ATTEMPTS_BEFORE_DEAD = 10 +REPLAY_REJECT_HOURS = 24 + +HTTP_TIMEOUT_SECONDS = 30 +LOGIN_TIMEOUT_SECONDS = 10 + +# Outbox back-pressure thresholds +OUTBOX_WARN_DEPTH = 1000 +OUTBOX_CRITICAL_DEPTH = 10000 + +# Retention +HISTORY_ARCHIVE_AFTER_DAYS = 7 +HISTORY_PURGE_AFTER_DAYS = 90 +TOMBSTONE_RETAIN_DAYS = 90 + +# Conflict rules +CONFLICT_RULES = { + "Last-Write-Wins", + "Central-Wins", + "Branch-Wins", + "Field-Level-LWW", + "Manual", +} +CDC_STRATEGIES = {"Outbox", "Watermark"} +DIRECTIONS = {"Central→Branch", "Branch→Central", "Bidirectional"} +``` + +- [ ] **Step 2: Create `exceptions.py`** + +File: `pos_next/sync/exceptions.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Sync engine exception hierarchy.""" + + +class SyncError(Exception): + """Base class for all sync engine errors.""" + pass + + +class SyncAuthError(SyncError): + """Authentication against central failed (bad credentials, expired session).""" + pass + + +class SyncTransportError(SyncError): + """HTTP/network-level failure talking to central.""" + pass + + +class SyncConflictError(SyncError): + """A conflict was detected and resolution is deferred to human review.""" + pass + + +class SyncValidationError(SyncError): + """Incoming payload failed adapter.validate_incoming().""" + pass + + +class SyncReplayRejected(SyncError): + """Payload rejected because created_at is older than the replay window.""" + pass +``` + +- [ ] **Step 3: Write failing tests for `payload.py`** + +File: `pos_next/sync/tests/test_payload.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +def test_compute_hash_stable(): + """Same payload (order-independent) produces same hash.""" + from pos_next.sync.payload import compute_hash + a = {"name": "ITEM-001", "item_name": "Apple", "price": 100} + b = {"price": 100, "name": "ITEM-001", "item_name": "Apple"} + assert compute_hash(a) == compute_hash(b) + print("PASS: test_compute_hash_stable") + + +def test_compute_hash_different_on_change(): + from pos_next.sync.payload import compute_hash + a = {"name": "ITEM-001", "price": 100} + b = {"name": "ITEM-001", "price": 101} + assert compute_hash(a) != compute_hash(b) + print("PASS: test_compute_hash_different_on_change") + + +def test_compute_hash_ignores_meta_fields(): + """modified, modified_by, owner, creation are excluded from hash.""" + from pos_next.sync.payload import compute_hash + a = {"name": "ITEM-001", "price": 100, "modified": "2026-04-05 10:00:00", "modified_by": "a@x.com"} + b = {"name": "ITEM-001", "price": 100, "modified": "2026-04-05 11:00:00", "modified_by": "b@x.com"} + assert compute_hash(a) == compute_hash(b) + print("PASS: test_compute_hash_ignores_meta_fields") + + +def test_strip_meta(): + """strip_meta removes server-side meta fields.""" + from pos_next.sync.payload import strip_meta + payload = { + "name": "ITEM-001", + "price": 100, + "modified": "2026-04-05", + "modified_by": "a@x.com", + "owner": "admin", + "creation": "2026-01-01", + "docstatus": 0, + } + stripped = strip_meta(payload) + assert "modified" not in stripped + assert "modified_by" not in stripped + assert "owner" not in stripped + assert "creation" not in stripped + assert stripped["name"] == "ITEM-001" + assert stripped["price"] == 100 + assert "docstatus" in stripped # docstatus is kept — it's semantic + print("PASS: test_strip_meta") + + +def run_all(): + test_compute_hash_stable() + test_compute_hash_different_on_change() + test_compute_hash_ignores_meta_fields() + test_strip_meta() + print("\nAll Payload tests PASSED") +``` + +- [ ] **Step 4: Run test to confirm failure** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_payload.run_all +``` + +Expected: FAIL — ImportError (no `payload` module). + +- [ ] **Step 5: Create `payload.py`** + +File: `pos_next/sync/payload.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Payload serialization, hashing, and meta-stripping helpers.""" + +import hashlib +import json + + +# Fields we strip before hashing (they change on every save, aren't semantic) +META_FIELDS = { + "modified", + "modified_by", + "owner", + "creation", + "idx", + "_user_tags", + "_comments", + "_assign", + "_liked_by", +} + + +def strip_meta(payload): + """Return a copy of payload with server-side meta fields removed.""" + return {k: v for k, v in payload.items() if k not in META_FIELDS} + + +def compute_hash(payload): + """ + Return SHA256 hex of a canonical JSON serialization of the payload, + excluding meta fields. Key order does not affect the hash. + """ + clean = strip_meta(payload) + canonical = json.dumps(clean, sort_keys=True, default=str, ensure_ascii=True) + return hashlib.sha256(canonical.encode("utf-8")).hexdigest() + + +def to_payload(doc): + """ + Convert a Frappe Document to a sync payload dict. + Includes children via Frappe's as_dict(); caller strips meta as needed. + """ + if hasattr(doc, "as_dict"): + return doc.as_dict(convert_dates_to_str=True) + return dict(doc) +``` + +- [ ] **Step 6: Run tests to verify they pass** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_payload.run_all +``` + +Expected: all 4 tests PASS. + +- [ ] **Step 7: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/defaults.py pos_next/sync/exceptions.py pos_next/sync/payload.py pos_next/sync/tests/test_payload.py +git commit -m "feat(sync): add defaults, exceptions, and payload helpers" +``` + +--- + +### Task 8: Create `BaseSyncAdapter` abstract class and adapter registry + +**Files:** +- Create: `pos_next/sync/adapters/__init__.py` +- Create: `pos_next/sync/adapters/base.py` +- Create: `pos_next/sync/registry.py` +- Create: `pos_next/sync/tests/test_base_adapter.py` +- Create: `pos_next/sync/tests/test_registry.py` + +- [ ] **Step 1: Create adapters directory** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/sync/adapters +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/sync/adapters/__init__.py +``` + +- [ ] **Step 2: Write failing tests for BaseSyncAdapter and registry** + +File: `pos_next/sync/tests/test_base_adapter.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + + +def test_base_adapter_interface(): + """BaseSyncAdapter has the expected methods.""" + from pos_next.sync.adapters.base import BaseSyncAdapter + required = {"serialize", "apply_incoming", "conflict_key", "validate_incoming", "pre_apply_transform"} + for method in required: + assert hasattr(BaseSyncAdapter, method), f"Missing: {method}" + print("PASS: test_base_adapter_interface") + + +def test_base_adapter_default_conflict_key(): + """Default conflict_key returns ('name',).""" + from pos_next.sync.adapters.base import BaseSyncAdapter + + class DummyAdapter(BaseSyncAdapter): + doctype = "Item" + + adapter = DummyAdapter() + assert adapter.conflict_key({"name": "ITEM-001"}) == ("name",) + print("PASS: test_base_adapter_default_conflict_key") + + +def test_base_adapter_default_validate_passes(): + """Default validate_incoming does nothing (no raise).""" + from pos_next.sync.adapters.base import BaseSyncAdapter + + class DummyAdapter(BaseSyncAdapter): + doctype = "Item" + + adapter = DummyAdapter() + adapter.validate_incoming({"name": "ITEM-001"}) # should not raise + print("PASS: test_base_adapter_default_validate_passes") + + +def test_base_adapter_default_pre_apply_transform_identity(): + """Default pre_apply_transform returns payload unchanged.""" + from pos_next.sync.adapters.base import BaseSyncAdapter + + class DummyAdapter(BaseSyncAdapter): + doctype = "Item" + + adapter = DummyAdapter() + p = {"name": "ITEM-001", "price": 100} + result = adapter.pre_apply_transform(p) + assert result == p + print("PASS: test_base_adapter_default_pre_apply_transform_identity") + + +def run_all(): + test_base_adapter_interface() + test_base_adapter_default_conflict_key() + test_base_adapter_default_validate_passes() + test_base_adapter_default_pre_apply_transform_identity() + print("\nAll BaseSyncAdapter tests PASSED") +``` + +File: `pos_next/sync/tests/test_registry.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + + +def test_registry_register_and_lookup(): + from pos_next.sync.adapters.base import BaseSyncAdapter + from pos_next.sync import registry + + class FakeItemAdapter(BaseSyncAdapter): + doctype = "Fake Item" + + registry.register(FakeItemAdapter) + got = registry.get_adapter("Fake Item") + assert isinstance(got, FakeItemAdapter) + print("PASS: test_registry_register_and_lookup") + + +def test_registry_unknown_returns_none(): + from pos_next.sync import registry + got = registry.get_adapter("Does Not Exist") + assert got is None + print("PASS: test_registry_unknown_returns_none") + + +def test_registry_list_registered(): + from pos_next.sync.adapters.base import BaseSyncAdapter + from pos_next.sync import registry + + class A(BaseSyncAdapter): + doctype = "Alpha" + + class B(BaseSyncAdapter): + doctype = "Beta" + + registry.register(A) + registry.register(B) + registered = registry.list_registered() + assert "Alpha" in registered + assert "Beta" in registered + print("PASS: test_registry_list_registered") + + +def run_all(): + test_registry_register_and_lookup() + test_registry_unknown_returns_none() + test_registry_list_registered() + print("\nAll Registry tests PASSED") +``` + +- [ ] **Step 3: Run tests to confirm they fail** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_base_adapter.run_all +bench --site execute pos_next.sync.tests.test_registry.run_all +``` + +Expected: FAIL — modules missing. + +- [ ] **Step 4: Create `BaseSyncAdapter`** + +File: `pos_next/sync/adapters/base.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Base class for per-DocType sync adapters.""" + +import frappe +from pos_next.sync.payload import to_payload + + +class BaseSyncAdapter: + """ + Subclass per synced DocType. Override methods as needed. + + Each subclass MUST set the class attribute `doctype`. + """ + doctype: str = "" + + def serialize(self, doc): + """Build a sync payload dict from a Frappe Document.""" + return to_payload(doc) + + def apply_incoming(self, payload, operation): + """ + Apply an incoming payload locally. Default implementation: + - delete operation → delete local record if exists + - insert/update/submit/cancel → upsert + + Returns the local document name. + """ + name = payload.get("name") + if not name: + raise ValueError(f"{self.doctype}: payload missing 'name' field") + + if operation == "delete": + if frappe.db.exists(self.doctype, name): + frappe.delete_doc(self.doctype, name, ignore_permissions=True, force=True) + return name + + payload = self.pre_apply_transform(payload) + + if frappe.db.exists(self.doctype, name): + doc = frappe.get_doc(self.doctype, name) + doc.update(payload) + doc.save(ignore_permissions=True) + else: + payload_with_doctype = {"doctype": self.doctype, **payload} + doc = frappe.get_doc(payload_with_doctype) + doc.insert(ignore_permissions=True) + return doc.name + + def conflict_key(self, payload): + """Tuple of fieldnames that identify this record across sites.""" + return ("name",) + + def validate_incoming(self, payload): + """Raise on invalid payload. Default: accept everything.""" + return None + + def pre_apply_transform(self, payload): + """Transform payload before apply. Default: identity.""" + return payload +``` + +- [ ] **Step 5: Create registry** + +File: `pos_next/sync/registry.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Sync adapter registry. Adapters register themselves at import time.""" + +_REGISTRY = {} + + +def register(adapter_class): + """Register an adapter class. adapter_class.doctype must be set.""" + if not getattr(adapter_class, "doctype", None): + raise ValueError(f"Adapter {adapter_class.__name__} has no doctype attribute") + _REGISTRY[adapter_class.doctype] = adapter_class + + +def get_adapter(doctype): + """Return an instance of the adapter for a DocType, or None.""" + cls = _REGISTRY.get(doctype) + return cls() if cls else None + + +def list_registered(): + """Return a list of DocType names that have registered adapters.""" + return list(_REGISTRY.keys()) + + +def clear(): + """Clear the registry. For tests only.""" + _REGISTRY.clear() +``` + +- [ ] **Step 6: Run tests to verify they pass** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_base_adapter.run_all +bench --site execute pos_next.sync.tests.test_registry.run_all +``` + +Expected: all tests PASS. + +- [ ] **Step 7: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/adapters/ pos_next/sync/registry.py pos_next/sync/tests/test_base_adapter.py pos_next/sync/tests/test_registry.py +git commit -m "feat(sync): add BaseSyncAdapter and adapter registry" +``` + +--- + +### Task 9: Create conflict resolution engine + +**Files:** +- Create: `pos_next/sync/conflict.py` +- Create: `pos_next/sync/tests/test_conflict.py` + +- [ ] **Step 1: Write failing tests** + +File: `pos_next/sync/tests/test_conflict.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from datetime import datetime + + +def test_last_write_wins_incoming_newer(): + from pos_next.sync.conflict import resolve + local = {"name": "X", "v": 1, "modified": "2026-04-05 10:00:00"} + incoming = {"name": "X", "v": 2, "modified": "2026-04-05 11:00:00"} + winner, verdict = resolve(local, incoming, "Last-Write-Wins") + assert winner is incoming + assert verdict == "incoming" + print("PASS: test_last_write_wins_incoming_newer") + + +def test_last_write_wins_local_newer(): + from pos_next.sync.conflict import resolve + local = {"name": "X", "v": 1, "modified": "2026-04-05 12:00:00"} + incoming = {"name": "X", "v": 2, "modified": "2026-04-05 11:00:00"} + winner, verdict = resolve(local, incoming, "Last-Write-Wins") + assert winner is local + assert verdict == "local" + print("PASS: test_last_write_wins_local_newer") + + +def test_last_write_wins_tie_goes_to_incoming(): + from pos_next.sync.conflict import resolve + ts = "2026-04-05 10:00:00" + local = {"name": "X", "v": 1, "modified": ts} + incoming = {"name": "X", "v": 2, "modified": ts} + winner, verdict = resolve(local, incoming, "Last-Write-Wins") + assert winner is incoming + print("PASS: test_last_write_wins_tie_goes_to_incoming") + + +def test_central_wins(): + from pos_next.sync.conflict import resolve + local = {"name": "X", "v": 1} + incoming = {"name": "X", "v": 2} + winner, verdict = resolve(local, incoming, "Central-Wins") + assert winner is incoming + assert verdict == "incoming" + print("PASS: test_central_wins") + + +def test_branch_wins(): + from pos_next.sync.conflict import resolve + local = {"name": "X", "v": 1} + incoming = {"name": "X", "v": 2} + winner, verdict = resolve(local, incoming, "Branch-Wins") + assert winner is incoming + assert verdict == "incoming" + print("PASS: test_branch_wins") + + +def test_manual_rule_raises(): + from pos_next.sync.conflict import resolve + from pos_next.sync.exceptions import SyncConflictError + local = {"name": "X", "v": 1} + incoming = {"name": "X", "v": 2} + raised = False + try: + resolve(local, incoming, "Manual") + except SyncConflictError: + raised = True + assert raised, "Manual rule should raise SyncConflictError" + print("PASS: test_manual_rule_raises") + + +def test_field_level_lww_merges_per_field(): + from pos_next.sync.conflict import resolve + local = { + "name": "X", + "field_a": "local-a", + "field_b": "local-b", + "__field_ts": {"field_a": "2026-04-05 10:00:00", "field_b": "2026-04-05 12:00:00"}, + } + incoming = { + "name": "X", + "field_a": "incoming-a", + "field_b": "incoming-b", + "__field_ts": {"field_a": "2026-04-05 11:00:00", "field_b": "2026-04-05 11:00:00"}, + } + winner, verdict = resolve(local, incoming, "Field-Level-LWW") + assert verdict == "merged" + assert winner["field_a"] == "incoming-a" # incoming had newer ts + assert winner["field_b"] == "local-b" # local had newer ts + print("PASS: test_field_level_lww_merges_per_field") + + +def test_unknown_rule_raises(): + from pos_next.sync.conflict import resolve + raised = False + try: + resolve({}, {}, "NotARealRule") + except ValueError: + raised = True + assert raised + print("PASS: test_unknown_rule_raises") + + +def run_all(): + test_last_write_wins_incoming_newer() + test_last_write_wins_local_newer() + test_last_write_wins_tie_goes_to_incoming() + test_central_wins() + test_branch_wins() + test_manual_rule_raises() + test_field_level_lww_merges_per_field() + test_unknown_rule_raises() + print("\nAll Conflict tests PASSED") +``` + +- [ ] **Step 2: Run tests to confirm failure** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_conflict.run_all +``` + +Expected: FAIL — module missing. + +- [ ] **Step 3: Create `conflict.py`** + +File: `pos_next/sync/conflict.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Conflict resolution strategies.""" + +from pos_next.sync.defaults import CONFLICT_RULES +from pos_next.sync.exceptions import SyncConflictError + + +def resolve(local, incoming, rule): + """ + Apply a conflict resolution rule to two payloads. + + Returns (winner_payload, verdict) where verdict is one of: + "local", "incoming", "merged". + + Raises: + SyncConflictError if rule is "Manual". + ValueError if rule is not recognized. + """ + if rule not in CONFLICT_RULES: + raise ValueError(f"Unknown conflict rule: {rule}") + + if rule == "Manual": + raise SyncConflictError( + f"Manual resolution required for {incoming.get('name', '')}" + ) + + if rule == "Central-Wins": + return incoming, "incoming" + + if rule == "Branch-Wins": + return incoming, "incoming" + + if rule == "Last-Write-Wins": + local_ts = str(local.get("modified") or "") + incoming_ts = str(incoming.get("modified") or "") + if incoming_ts >= local_ts: + return incoming, "incoming" + return local, "local" + + if rule == "Field-Level-LWW": + return _merge_field_level(local, incoming), "merged" + + raise ValueError(f"Unimplemented conflict rule: {rule}") + + +def _merge_field_level(local, incoming): + """ + Merge two payloads field-by-field based on per-field timestamps. + + Both payloads must carry a `__field_ts` dict mapping fieldname → timestamp. + For each field, the value from whichever payload has the newer timestamp wins. + Fields with no timestamp entry default to local's value. + """ + local_ts = local.get("__field_ts", {}) or {} + incoming_ts = incoming.get("__field_ts", {}) or {} + + merged = dict(local) + all_fields = set(local.keys()) | set(incoming.keys()) + all_fields.discard("__field_ts") + + for field in all_fields: + l_ts = str(local_ts.get(field, "")) + i_ts = str(incoming_ts.get(field, "")) + if i_ts and i_ts > l_ts: + merged[field] = incoming.get(field) + + # Merge the timestamp maps too — keep max per field + merged_ts = dict(local_ts) + for f, ts in incoming_ts.items(): + if str(ts) > str(merged_ts.get(f, "")): + merged_ts[f] = ts + merged["__field_ts"] = merged_ts + return merged +``` + +- [ ] **Step 4: Run tests to verify they pass** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_conflict.run_all +``` + +Expected: all 8 tests PASS. + +- [ ] **Step 5: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/conflict.py pos_next/sync/tests/test_conflict.py +git commit -m "feat(sync): add conflict resolution engine with 5 strategies" +``` + +--- + +### Task 10: Create HTTP transport + auth helper (`auth.py`, `transport.py`) + +**Files:** +- Create: `pos_next/sync/auth.py` +- Create: `pos_next/sync/transport.py` +- Create: `pos_next/sync/tests/test_auth.py` + +- [ ] **Step 1: Write failing tests** + +File: `pos_next/sync/tests/test_auth.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from unittest.mock import patch, MagicMock + + +def test_session_login_caches_sid(): + """After login, the session cookie (sid) is held in memory.""" + from pos_next.sync.auth import SyncSession + + fake_response = MagicMock() + fake_response.status_code = 200 + fake_response.cookies = {"sid": "test-sid-xyz"} + fake_response.raise_for_status = MagicMock() + + with patch("pos_next.sync.auth.requests.post", return_value=fake_response) as mock_post: + session = SyncSession( + central_url="https://central.test", + username="sync@test.com", + password="pw", + ) + session.login() + assert session._sid == "test-sid-xyz" + # Second call does NOT re-login + session.login() + assert mock_post.call_count == 1 + print("PASS: test_session_login_caches_sid") + + +def test_session_login_failure_raises(): + """Failed login raises SyncAuthError.""" + from pos_next.sync.auth import SyncSession + from pos_next.sync.exceptions import SyncAuthError + import requests + + fake_response = MagicMock() + fake_response.status_code = 401 + fake_response.raise_for_status = MagicMock( + side_effect=requests.HTTPError("401 Unauthorized") + ) + + with patch("pos_next.sync.auth.requests.post", return_value=fake_response): + session = SyncSession( + central_url="https://central.test", + username="sync@test.com", + password="bad", + ) + raised = False + try: + session.login() + except SyncAuthError: + raised = True + assert raised + print("PASS: test_session_login_failure_raises") + + +def test_session_auto_relogin_on_401(): + """A 401 response from an authenticated request triggers one re-login + retry.""" + from pos_next.sync.auth import SyncSession + + # First login succeeds + login_resp = MagicMock() + login_resp.status_code = 200 + login_resp.cookies = {"sid": "sid-1"} + login_resp.raise_for_status = MagicMock() + + # First authenticated call returns 401 + call_resp_401 = MagicMock() + call_resp_401.status_code = 401 + + # Re-login produces new sid + login_resp_2 = MagicMock() + login_resp_2.status_code = 200 + login_resp_2.cookies = {"sid": "sid-2"} + login_resp_2.raise_for_status = MagicMock() + + # Retry succeeds + call_resp_ok = MagicMock() + call_resp_ok.status_code = 200 + call_resp_ok.json = MagicMock(return_value={"message": "ok"}) + call_resp_ok.raise_for_status = MagicMock() + + with patch("pos_next.sync.auth.requests.post") as mock_post: + mock_post.side_effect = [login_resp, call_resp_401, login_resp_2, call_resp_ok] + session = SyncSession( + central_url="https://central.test", + username="sync@test.com", + password="pw", + ) + session.login() + result = session.post("/api/method/something", data={"x": 1}) + assert result.status_code == 200 + assert session._sid == "sid-2" + print("PASS: test_session_auto_relogin_on_401") + + +def run_all(): + test_session_login_caches_sid() + test_session_login_failure_raises() + test_session_auto_relogin_on_401() + print("\nAll Auth tests PASSED") +``` + +- [ ] **Step 2: Run tests to confirm failure** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_auth.run_all +``` + +Expected: FAIL — module missing. + +- [ ] **Step 3: Create `auth.py`** + +File: `pos_next/sync/auth.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Username/password session login against central.""" + +import requests + +from pos_next.sync.defaults import HTTP_TIMEOUT_SECONDS, LOGIN_TIMEOUT_SECONDS +from pos_next.sync.exceptions import SyncAuthError, SyncTransportError + + +class SyncSession: + """ + Holds a logged-in session against central. + + Login happens lazily on first use. On a 401 response, we automatically + re-log in once and retry the original request. + """ + + def __init__(self, central_url, username, password): + self.central_url = central_url.rstrip("/") + self.username = username + self.password = password + self._sid = None + + def login(self): + """POST /api/method/login. Cache sid in memory.""" + if self._sid: + return + url = f"{self.central_url}/api/method/login" + try: + resp = requests.post( + url, + data={"usr": self.username, "pwd": self.password}, + timeout=LOGIN_TIMEOUT_SECONDS, + ) + resp.raise_for_status() + except requests.HTTPError as e: + raise SyncAuthError(f"Login failed for {self.username}: {e}") + except requests.RequestException as e: + raise SyncTransportError(f"Login request failed: {e}") + sid = resp.cookies.get("sid") + if not sid: + raise SyncAuthError("Login response did not include sid cookie") + self._sid = sid + + def _cookies(self): + return {"sid": self._sid} if self._sid else {} + + def post(self, path, data=None, json=None): + """Authenticated POST. On 401, re-login and retry once.""" + self.login() + url = f"{self.central_url}{path}" + resp = requests.post( + url, + data=data, + json=json, + cookies=self._cookies(), + timeout=HTTP_TIMEOUT_SECONDS, + ) + if resp.status_code == 401: + self._sid = None + self.login() + resp = requests.post( + url, + data=data, + json=json, + cookies=self._cookies(), + timeout=HTTP_TIMEOUT_SECONDS, + ) + return resp + + def get(self, path, params=None): + """Authenticated GET. On 401, re-login and retry once.""" + self.login() + url = f"{self.central_url}{path}" + resp = requests.get( + url, + params=params, + cookies=self._cookies(), + timeout=HTTP_TIMEOUT_SECONDS, + ) + if resp.status_code == 401: + self._sid = None + self.login() + resp = requests.get( + url, + params=params, + cookies=self._cookies(), + timeout=HTTP_TIMEOUT_SECONDS, + ) + return resp + + def logout(self): + """POST /api/method/logout. Best-effort; ignore errors.""" + if not self._sid: + return + try: + requests.post( + f"{self.central_url}/api/method/logout", + cookies=self._cookies(), + timeout=LOGIN_TIMEOUT_SECONDS, + ) + except requests.RequestException: + pass + self._sid = None +``` + +- [ ] **Step 4: Create `transport.py`** + +File: `pos_next/sync/transport.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""HTTP transport helpers wrapping SyncSession. + +Provides a factory that builds a SyncSession from the Sync Site Config record. +""" + +import frappe + +from pos_next.sync.auth import SyncSession +from pos_next.sync.exceptions import SyncAuthError + + +def build_session_from_config(): + """ + Read the (singleton) Branch Sync Site Config and return a SyncSession. + + Raises SyncAuthError if no Branch config exists or credentials are missing. + """ + name = frappe.db.get_value("Sync Site Config", {"site_role": "Branch"}, "name") + if not name: + raise SyncAuthError("No Branch Sync Site Config found on this site") + cfg = frappe.get_doc("Sync Site Config", name) + if not (cfg.central_url and cfg.sync_username and cfg.sync_password): + raise SyncAuthError("Branch Sync Site Config missing credentials") + password = cfg.get_password("sync_password") + return SyncSession( + central_url=cfg.central_url, + username=cfg.sync_username, + password=password, + ) +``` + +- [ ] **Step 5: Run tests to verify they pass** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_auth.run_all +``` + +Expected: all 3 tests PASS. + +- [ ] **Step 6: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/auth.py pos_next/sync/transport.py pos_next/sync/tests/test_auth.py +git commit -m "feat(sync): add SyncSession auth + transport factory" +``` + +--- + +### Task 11: Add "Test Sync Connection" button on Sync Site Config form + +**Files:** +- Modify: `pos_next/pos_next/doctype/sync_site_config/sync_site_config.js` +- Modify: `pos_next/pos_next/doctype/sync_site_config/sync_site_config.py` (add whitelisted method) + +- [ ] **Step 1: Add whitelisted `test_connection` method to the DocType controller** + +File: `pos_next/pos_next/doctype/sync_site_config/sync_site_config.py` + +Append to the class: + +```python + @frappe.whitelist() + def test_connection(self): + """ + Attempt login against central and return a short status message. + Only meaningful on Branch-role configs. + """ + if self.site_role != "Branch": + return {"ok": False, "message": "Test Connection only applies to Branch role"} + if not (self.central_url and self.sync_username and self.sync_password): + return {"ok": False, "message": "Fill central_url, sync_username, sync_password first"} + + from pos_next.sync.auth import SyncSession + from pos_next.sync.exceptions import SyncAuthError, SyncTransportError + + password = self.get_password("sync_password") + session = SyncSession( + central_url=self.central_url, + username=self.sync_username, + password=password, + ) + try: + session.login() + except SyncAuthError as e: + return {"ok": False, "message": f"Auth failed: {e}"} + except SyncTransportError as e: + return {"ok": False, "message": f"Network error: {e}"} + except Exception as e: + return {"ok": False, "message": f"Unexpected error: {e}"} + finally: + session.logout() + return {"ok": True, "message": f"Connected to {self.central_url} as {self.sync_username}"} +``` + +Also add the `frappe` import at the top if not already there. + +- [ ] **Step 2: Add button in the JS form** + +File: `pos_next/pos_next/doctype/sync_site_config/sync_site_config.js` + +```javascript +// Copyright (c) 2026, BrainWise and contributors +// For license information, please see license.txt + +frappe.ui.form.on("Sync Site Config", { + refresh(frm) { + if (frm.doc.site_role === "Branch" && !frm.is_new()) { + frm.add_custom_button(__("Test Sync Connection"), () => { + frappe.call({ + doc: frm.doc, + method: "test_connection", + freeze: true, + freeze_message: __("Testing connection..."), + callback(r) { + if (!r.message) return; + const msg = r.message.message; + const ok = r.message.ok; + frappe.msgprint({ + title: ok ? __("Connection OK") : __("Connection Failed"), + message: msg, + indicator: ok ? "green" : "red", + }); + }, + }); + }); + } + }, +}); +``` + +- [ ] **Step 3: Manual smoke test — create a branch config and click the button** + +Via UI or bench command: + +```bash +bench --site execute 'frappe.get_doc({"doctype":"Sync Site Config","site_role":"Branch","branch_code":"TEST","enabled":0,"central_url":"https://nonexistent.test","sync_username":"x@x.com","sync_password":"x"}).insert(ignore_permissions=True)' +``` + +Open the form in the desk, click "Test Sync Connection". Expect a red "Network error" dialog (host doesn't exist). Delete the test record afterward: + +```bash +bench --site execute 'frappe.delete_doc("Sync Site Config", "TEST", force=1)' +``` + +- [ ] **Step 4: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/pos_next/doctype/sync_site_config/sync_site_config.py pos_next/pos_next/doctype/sync_site_config/sync_site_config.js +git commit -m "feat(sync): add Test Sync Connection button on Sync Site Config form" +``` + +--- + +### Task 12: Install custom fields (`sync_uuid`, `origin_branch`, `synced_from_failover`) via patch + +**Files:** +- Create: `pos_next/patches/v2_0_0/__init__.py` (if missing) +- Create: `pos_next/patches/v2_0_0/add_sync_custom_fields.py` +- Modify: `pos_next/patches.txt` +- Create: `pos_next/sync/tests/test_custom_fields.py` + +- [ ] **Step 1: Ensure patches dir exists** + +```bash +ls /home/ubuntu/frappe-bench/apps/pos_next/pos_next/patches/v2_0_0/ || mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/patches/v2_0_0 +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/patches/v2_0_0/__init__.py +``` + +- [ ] **Step 2: Write failing test for custom fields** + +File: `pos_next/sync/tests/test_custom_fields.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +TARGET_DOCTYPES = [ + "Sales Invoice", + "Payment Entry", + "Stock Ledger Entry", + "POS Opening Shift", + "POS Closing Shift", + "Customer", +] + +EXPECTED_FIELDS = {"sync_uuid", "origin_branch", "synced_from_failover"} + + +def test_custom_fields_installed(): + """All three sync custom fields are installed on every target DocType.""" + for dt in TARGET_DOCTYPES: + for fieldname in EXPECTED_FIELDS: + exists = frappe.db.exists( + "Custom Field", {"dt": dt, "fieldname": fieldname} + ) + assert exists, f"Missing custom field {fieldname} on {dt}" + print("PASS: test_custom_fields_installed") + + +def test_sync_uuid_is_unique(): + """sync_uuid has unique=1 on target DocTypes.""" + for dt in TARGET_DOCTYPES: + cf = frappe.db.get_value( + "Custom Field", + {"dt": dt, "fieldname": "sync_uuid"}, + ["fieldtype", "unique"], + as_dict=True, + ) + assert cf is not None, f"sync_uuid missing on {dt}" + assert cf.fieldtype == "Data", f"sync_uuid should be Data on {dt}" + assert cf.unique == 1, f"sync_uuid should be unique on {dt}" + print("PASS: test_sync_uuid_is_unique") + + +def run_all(): + test_custom_fields_installed() + test_sync_uuid_is_unique() + print("\nAll Custom Fields tests PASSED") +``` + +- [ ] **Step 3: Run test to confirm failure** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_custom_fields.run_all +``` + +Expected: FAIL — custom fields don't exist yet. + +- [ ] **Step 4: Write the patch** + +File: `pos_next/patches/v2_0_0/add_sync_custom_fields.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Install sync_uuid, origin_branch, synced_from_failover custom fields.""" + +import frappe +from frappe.custom.doctype.custom_field.custom_field import create_custom_fields + + +TARGET_DOCTYPES = [ + "Sales Invoice", + "Payment Entry", + "Stock Ledger Entry", + "POS Opening Shift", + "POS Closing Shift", + "Customer", +] + + +def execute(): + fields_per_doctype = {} + for dt in TARGET_DOCTYPES: + fields_per_doctype[dt] = [ + { + "fieldname": "sync_uuid", + "label": "Sync UUID", + "fieldtype": "Data", + "unique": 1, + "read_only": 1, + "no_copy": 1, + "description": "Cross-site dedup key; set at creation", + "insert_after": "name" if dt == "Customer" else None, + }, + { + "fieldname": "origin_branch", + "label": "Origin Branch", + "fieldtype": "Data", + "read_only": 1, + "no_copy": 1, + "description": "branch_code of the site that originated this record", + }, + { + "fieldname": "synced_from_failover", + "label": "Synced From Failover", + "fieldtype": "Check", + "read_only": 1, + "no_copy": 1, + "default": "0", + "description": "1 when central wrote this record as a failover proxy for a branch", + }, + ] + create_custom_fields(fields_per_doctype, update=True) + frappe.db.commit() + print(f"Installed sync custom fields on {len(TARGET_DOCTYPES)} doctypes") +``` + +- [ ] **Step 5: Register the patch** + +Append to `pos_next/patches.txt` under `[post_model_sync]`: + +``` +pos_next.patches.v2_0_0.add_sync_custom_fields +``` + +- [ ] **Step 6: Run the patch** + +```bash +cd /home/ubuntu/frappe-bench +bench --site migrate +``` + +Expected: patch output "Installed sync custom fields on 6 doctypes". + +- [ ] **Step 7: Run test to verify it passes** + +```bash +bench --site execute pos_next.sync.tests.test_custom_fields.run_all +``` + +Expected: both tests PASS. + +- [ ] **Step 8: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/patches/v2_0_0/ pos_next/patches.txt pos_next/sync/tests/test_custom_fields.py +git commit -m "feat(sync): install sync_uuid, origin_branch, synced_from_failover custom fields" +``` + +--- + +### Task 13: Backfill `sync_uuid` on existing transaction rows (idempotent patch) + +**Files:** +- Create: `pos_next/patches/v2_0_0/backfill_sync_uuid.py` +- Modify: `pos_next/patches.txt` +- Create: `pos_next/sync/tests/test_backfill.py` + +- [ ] **Step 1: Write failing test** + +File: `pos_next/sync/tests/test_backfill.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +TARGET_DOCTYPES = [ + "Sales Invoice", + "Payment Entry", + "Stock Ledger Entry", + "POS Opening Shift", + "POS Closing Shift", + "Customer", +] + + +def test_no_null_sync_uuids_after_backfill(): + """After the backfill runs, no rows in target DocTypes have NULL sync_uuid.""" + from pos_next.patches.v2_0_0.backfill_sync_uuid import execute + + execute() # idempotent + + for dt in TARGET_DOCTYPES: + # Some tables may be empty on a fresh install — skip those + total = frappe.db.count(dt) + if total == 0: + continue + null_count = frappe.db.sql( + f"SELECT COUNT(*) FROM `tab{dt}` WHERE sync_uuid IS NULL OR sync_uuid = ''" + )[0][0] + assert null_count == 0, f"{dt}: {null_count} rows have NULL sync_uuid" + print("PASS: test_no_null_sync_uuids_after_backfill") + + +def test_backfill_is_idempotent(): + """Running the backfill twice does not change existing UUIDs.""" + from pos_next.patches.v2_0_0.backfill_sync_uuid import execute + + execute() + # Snapshot a few + rows_before = frappe.db.sql( + "SELECT name, sync_uuid FROM `tabCustomer` WHERE sync_uuid IS NOT NULL LIMIT 5", + as_dict=True, + ) + execute() + rows_after = frappe.db.sql( + "SELECT name, sync_uuid FROM `tabCustomer` WHERE sync_uuid IS NOT NULL LIMIT 5", + as_dict=True, + ) + # Map both for direct comparison + before = {r.name: r.sync_uuid for r in rows_before} + after = {r.name: r.sync_uuid for r in rows_after} + for name, uuid in before.items(): + assert after.get(name) == uuid, f"Customer {name}: uuid changed" + print("PASS: test_backfill_is_idempotent") + + +def run_all(): + test_no_null_sync_uuids_after_backfill() + test_backfill_is_idempotent() + print("\nAll Backfill tests PASSED") +``` + +- [ ] **Step 2: Write the patch** + +File: `pos_next/patches/v2_0_0/backfill_sync_uuid.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Backfill sync_uuid on existing rows in sync-tracked doctypes. Idempotent.""" + +import uuid + +import frappe + + +TARGET_DOCTYPES = [ + "Sales Invoice", + "Payment Entry", + "Stock Ledger Entry", + "POS Opening Shift", + "POS Closing Shift", + "Customer", +] + +BATCH_SIZE = 500 + + +def execute(): + total_updated = 0 + for dt in TARGET_DOCTYPES: + updated = _backfill_doctype(dt) + total_updated += updated + print(f"Backfilled sync_uuid: {dt} — {updated} rows") + print(f"Total rows backfilled: {total_updated}") + frappe.db.commit() + + +def _backfill_doctype(doctype_name): + """Fill sync_uuid where NULL or empty, in batches.""" + updated = 0 + while True: + rows = frappe.db.sql( + f""" + SELECT name FROM `tab{doctype_name}` + WHERE sync_uuid IS NULL OR sync_uuid = '' + LIMIT {BATCH_SIZE} + """, + as_dict=True, + ) + if not rows: + break + for row in rows: + new_uuid = str(uuid.uuid4()) + frappe.db.sql( + f"UPDATE `tab{doctype_name}` SET sync_uuid = %s WHERE name = %s", + (new_uuid, row.name), + ) + frappe.db.commit() + updated += len(rows) + if len(rows) < BATCH_SIZE: + break + return updated +``` + +- [ ] **Step 3: Register the patch** + +Append to `pos_next/patches.txt`: + +``` +pos_next.patches.v2_0_0.backfill_sync_uuid +``` + +- [ ] **Step 4: Run migrate** + +```bash +cd /home/ubuntu/frappe-bench +bench --site migrate +``` + +- [ ] **Step 5: Run tests** + +```bash +bench --site execute pos_next.sync.tests.test_backfill.run_all +``` + +Expected: both tests PASS. + +- [ ] **Step 6: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/patches/v2_0_0/backfill_sync_uuid.py pos_next/patches.txt pos_next/sync/tests/test_backfill.py +git commit -m "feat(sync): backfill sync_uuid on existing transaction rows" +``` + +--- + +### Task 14: Create `POS Next Sync Agent` role and permission query condition + +**Files:** +- Create: `pos_next/patches/v2_0_0/create_sync_agent_role.py` +- Modify: `pos_next/patches.txt` + +- [ ] **Step 1: Write the patch** + +File: `pos_next/patches/v2_0_0/create_sync_agent_role.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Create the POS Next Sync Agent role.""" + +import frappe + + +ROLE_NAME = "POS Next Sync Agent" + + +def execute(): + if not frappe.db.exists("Role", ROLE_NAME): + role = frappe.get_doc({ + "doctype": "Role", + "role_name": ROLE_NAME, + "desk_access": 0, + "is_custom": 1, + }) + role.insert(ignore_permissions=True) + print(f"Created role: {ROLE_NAME}") + else: + print(f"Role already exists: {ROLE_NAME}") + frappe.db.commit() +``` + +- [ ] **Step 2: Register the patch** + +Append to `pos_next/patches.txt`: + +``` +pos_next.patches.v2_0_0.create_sync_agent_role +``` + +- [ ] **Step 3: Run migrate and verify** + +```bash +cd /home/ubuntu/frappe-bench +bench --site migrate +bench --site execute 'print(frappe.db.exists("Role", "POS Next Sync Agent"))' +``` + +Expected: prints `POS Next Sync Agent` (the role name itself — Frappe `exists` returns the name). + +- [ ] **Step 4: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/patches/v2_0_0/create_sync_agent_role.py pos_next/patches.txt +git commit -m "feat(sync): create POS Next Sync Agent role" +``` + +--- + +### Task 15: Create seeds module with default `synced_doctypes` rules + +**Files:** +- Create: `pos_next/sync/seeds.py` +- Create: `pos_next/sync/tests/test_seeds.py` + +- [ ] **Step 1: Write failing test** + +File: `pos_next/sync/tests/test_seeds.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +def _cleanup(): + frappe.db.delete("Sync Site Config") + frappe.db.commit() + + +def test_seeds_populate_registry(): + """seed_default_rules returns a list of Sync DocType Rule dicts.""" + from pos_next.sync.seeds import DEFAULT_SYNC_RULES + + assert isinstance(DEFAULT_SYNC_RULES, list) + assert len(DEFAULT_SYNC_RULES) >= 20, f"Expected at least 20 seeded rules, got {len(DEFAULT_SYNC_RULES)}" + required_keys = {"doctype_name", "direction", "cdc_strategy", "conflict_rule", "priority"} + for rule in DEFAULT_SYNC_RULES: + missing = required_keys - set(rule.keys()) + assert not missing, f"Rule {rule.get('doctype_name')} missing keys: {missing}" + print("PASS: test_seeds_populate_registry") + + +def test_seeds_include_required_doctypes(): + """Seeds include the core DocTypes from the spec.""" + from pos_next.sync.seeds import DEFAULT_SYNC_RULES + names = {r["doctype_name"] for r in DEFAULT_SYNC_RULES} + required = { + "Item", + "Item Price", + "POS Profile", + "Warehouse", + "Customer", + "Sales Invoice", + "Payment Entry", + "POS Opening Shift", + "POS Closing Shift", + "Stock Ledger Entry", + "User", + "Mode of Payment", + } + missing = required - names + assert not missing, f"Missing from seeds: {missing}" + print("PASS: test_seeds_include_required_doctypes") + + +def test_apply_seeds_to_config(): + """apply_seeds_to_config populates synced_doctypes on a config row.""" + _cleanup() + try: + from pos_next.sync.seeds import apply_seeds_to_config + + doc = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Central", + "branch_code": "HQ", + "enabled": 1, + }) + doc.insert(ignore_permissions=True) + + apply_seeds_to_config(doc) + doc.reload() + assert len(doc.synced_doctypes) >= 20, f"Expected >=20 rules, got {len(doc.synced_doctypes)}" + print("PASS: test_apply_seeds_to_config") + finally: + _cleanup() + + +def test_priorities_are_sorted_correctly(): + """POS Opening Shift has lowest priority (synced first).""" + from pos_next.sync.seeds import DEFAULT_SYNC_RULES + by_name = {r["doctype_name"]: r for r in DEFAULT_SYNC_RULES} + opening_prio = by_name["POS Opening Shift"]["priority"] + invoice_prio = by_name["Sales Invoice"]["priority"] + assert opening_prio < invoice_prio, ( + f"POS Opening Shift priority ({opening_prio}) should be < " + f"Sales Invoice priority ({invoice_prio})" + ) + print("PASS: test_priorities_are_sorted_correctly") + + +def run_all(): + test_seeds_populate_registry() + test_seeds_include_required_doctypes() + test_apply_seeds_to_config() + test_priorities_are_sorted_correctly() + print("\nAll Seeds tests PASSED") +``` + +- [ ] **Step 2: Run test to confirm failure** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_seeds.run_all +``` + +Expected: FAIL — module missing. + +- [ ] **Step 3: Create `seeds.py`** + +File: `pos_next/sync/seeds.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Default Sync DocType Rule seeds applied to new Sync Site Config records.""" + + +DEFAULT_SYNC_RULES = [ + # --- Masters pulled central → branch, Central-Wins --- + {"doctype_name": "Item", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 100, "batch_size": 100}, + {"doctype_name": "Item Price", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + {"doctype_name": "Item Group", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 100, "batch_size": 100}, + {"doctype_name": "Item Barcode", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 100, "batch_size": 100}, + {"doctype_name": "UOM", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 100, "batch_size": 100}, + {"doctype_name": "Price List", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 100, "batch_size": 100}, + {"doctype_name": "POS Profile", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 90, "batch_size": 100}, + {"doctype_name": "POS Settings", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 90, "batch_size": 100}, + {"doctype_name": "POS Offer", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 120, "batch_size": 100}, + {"doctype_name": "POS Coupon", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 120, "batch_size": 100}, + {"doctype_name": "Loyalty Program", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 120, "batch_size": 100}, + {"doctype_name": "Warehouse", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 90, "batch_size": 100}, + {"doctype_name": "Branch", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 90, "batch_size": 100}, + {"doctype_name": "Company", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 80, "batch_size": 100}, + {"doctype_name": "Currency", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 80, "batch_size": 100}, + {"doctype_name": "Mode of Payment", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + {"doctype_name": "Sales Taxes and Charges Template", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + {"doctype_name": "Item Tax Template", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + {"doctype_name": "User", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 80, "batch_size": 100}, + {"doctype_name": "Role Profile", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 80, "batch_size": 100}, + {"doctype_name": "Employee", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + {"doctype_name": "Sales Person", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + {"doctype_name": "Customer Group", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + + # --- Customer: bidirectional, mobile-no Field-Level-LWW --- + {"doctype_name": "Customer", "direction": "Bidirectional", "cdc_strategy": "Outbox", "conflict_rule": "Field-Level-LWW", "priority": 50, "batch_size": 100}, + + # --- Transactions branch → central, Branch-Wins --- + {"doctype_name": "POS Opening Shift", "direction": "Branch→Central", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 10, "batch_size": 50}, + {"doctype_name": "POS Closing Shift", "direction": "Branch→Central", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 20, "batch_size": 50}, + {"doctype_name": "Sales Invoice", "direction": "Branch→Central", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 50, "batch_size": 100}, + {"doctype_name": "Payment Entry", "direction": "Branch→Central", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 50, "batch_size": 100}, + {"doctype_name": "Stock Ledger Entry", "direction": "Branch→Central", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 60, "batch_size": 200}, + {"doctype_name": "Offline Invoice Sync","direction": "Branch→Central", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 70, "batch_size": 100}, + + # --- Wallet bidirectional --- + {"doctype_name": "Wallet", "direction": "Bidirectional", "cdc_strategy": "Outbox", "conflict_rule": "Field-Level-LWW", "priority": 60, "batch_size": 100}, + {"doctype_name": "Wallet Transaction", "direction": "Bidirectional", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 60, "batch_size": 100}, +] + + +def apply_seeds_to_config(config_doc): + """ + Populate synced_doctypes on a Sync Site Config doc with DEFAULT_SYNC_RULES. + + Only adds rules that don't already exist on the config (by doctype_name). + """ + existing = {row.doctype_name for row in (config_doc.synced_doctypes or [])} + added = 0 + for rule in DEFAULT_SYNC_RULES: + if rule["doctype_name"] in existing: + continue + config_doc.append("synced_doctypes", { + **rule, + "enabled": 1, + }) + added += 1 + if added: + config_doc.save(ignore_permissions=True) + return added +``` + +- [ ] **Step 4: Run tests to verify they pass** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.test_seeds.run_all +``` + +Expected: all 4 tests PASS. + +- [ ] **Step 5: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/seeds.py pos_next/sync/tests/test_seeds.py +git commit -m "feat(sync): add default Sync DocType Rule seeds" +``` + +--- + +### Task 16: Auto-apply seeds on Sync Site Config creation + +**Files:** +- Modify: `pos_next/pos_next/doctype/sync_site_config/sync_site_config.py` + +- [ ] **Step 1: Extend SyncSiteConfig with after_insert hook** + +In `pos_next/pos_next/doctype/sync_site_config/sync_site_config.py`, add method: + +```python + def after_insert(self): + """Seed the synced_doctypes registry with default rules.""" + from pos_next.sync.seeds import apply_seeds_to_config + apply_seeds_to_config(self) +``` + +- [ ] **Step 2: Verify via smoke test** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute ' +import frappe +frappe.db.delete("Sync Site Config") +doc = frappe.get_doc({"doctype":"Sync Site Config","site_role":"Central","branch_code":"SEEDTEST","enabled":1}).insert(ignore_permissions=True) +doc.reload() +print(f"Rules seeded: {len(doc.synced_doctypes)}") +frappe.db.delete("Sync Site Config", {"name": "SEEDTEST"}) +frappe.db.commit() +' +``` + +Expected: `Rules seeded: 32` (or similar count matching DEFAULT_SYNC_RULES). + +- [ ] **Step 3: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/pos_next/doctype/sync_site_config/sync_site_config.py +git commit -m "feat(sync): auto-apply default rules when creating Sync Site Config" +``` + +--- + +### Task 17: Install custom fields hooks for fixtures (so they migrate on deploy) + +**Files:** +- Modify: `pos_next/hooks.py` + +- [ ] **Step 1: Add fixtures entry for custom fields** + +In `pos_next/hooks.py`, find or add the `fixtures` list. If none exists yet, add: + +```python +fixtures = [ + { + "doctype": "Custom Field", + "filters": [ + [ + "fieldname", "in", ["sync_uuid", "origin_branch", "synced_from_failover"] + ] + ] + }, + { + "doctype": "Role", + "filters": [ + ["role_name", "=", "POS Next Sync Agent"] + ] + }, +] +``` + +If `fixtures` exists, merge these entries into it. + +- [ ] **Step 2: Export fixtures to verify** + +```bash +cd /home/ubuntu/frappe-bench +bench --site export-fixtures --app pos_next +ls /home/ubuntu/frappe-bench/apps/pos_next/pos_next/fixtures/ +``` + +Expected: files `custom_field.json` and `role.json` contain the sync-related entries. + +- [ ] **Step 3: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/hooks.py pos_next/fixtures/ +git commit -m "feat(sync): add sync custom fields and role to fixtures" +``` + +--- + +### Task 18: Create `sync_uuid` auto-fill hook on target DocTypes + +**Files:** +- Create: `pos_next/sync/hooks_uuid.py` +- Modify: `pos_next/hooks.py` + +- [ ] **Step 1: Create `hooks_uuid.py`** + +File: `pos_next/sync/hooks_uuid.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Auto-fill sync_uuid on creation of sync-tracked documents.""" + +import uuid + +import frappe + + +def set_sync_uuid_if_missing(doc, method=None): + """Before-insert hook: set sync_uuid to a fresh UUID4 if not already set.""" + if getattr(doc, "sync_uuid", None): + return + doc.sync_uuid = str(uuid.uuid4()) + + +def set_origin_branch_if_missing(doc, method=None): + """Before-insert hook: set origin_branch to this site's branch_code if empty.""" + if getattr(doc, "origin_branch", None): + return + branch_code = frappe.db.get_value( + "Sync Site Config", {"site_role": "Branch"}, "branch_code" + ) + if branch_code: + doc.origin_branch = branch_code +``` + +- [ ] **Step 2: Wire hooks in `hooks.py`** + +In `pos_next/hooks.py`, add (or extend): + +```python +doc_events = { + "Sales Invoice": { + "before_insert": [ + "pos_next.sync.hooks_uuid.set_sync_uuid_if_missing", + "pos_next.sync.hooks_uuid.set_origin_branch_if_missing", + ], + }, + "Payment Entry": { + "before_insert": [ + "pos_next.sync.hooks_uuid.set_sync_uuid_if_missing", + "pos_next.sync.hooks_uuid.set_origin_branch_if_missing", + ], + }, + "Stock Ledger Entry": { + "before_insert": [ + "pos_next.sync.hooks_uuid.set_sync_uuid_if_missing", + "pos_next.sync.hooks_uuid.set_origin_branch_if_missing", + ], + }, + "POS Opening Shift": { + "before_insert": [ + "pos_next.sync.hooks_uuid.set_sync_uuid_if_missing", + "pos_next.sync.hooks_uuid.set_origin_branch_if_missing", + ], + }, + "POS Closing Shift": { + "before_insert": [ + "pos_next.sync.hooks_uuid.set_sync_uuid_if_missing", + "pos_next.sync.hooks_uuid.set_origin_branch_if_missing", + ], + }, + "Customer": { + "before_insert": [ + "pos_next.sync.hooks_uuid.set_sync_uuid_if_missing", + "pos_next.sync.hooks_uuid.set_origin_branch_if_missing", + ], + }, +} +``` + +If `doc_events` already exists in hooks.py, merge these entries carefully. + +- [ ] **Step 3: Restart bench to pick up hook changes** + +```bash +cd /home/ubuntu/frappe-bench +bench restart +``` + +- [ ] **Step 4: Smoke test — create a Customer and verify sync_uuid is populated** + +```bash +bench --site execute ' +import frappe +c = frappe.get_doc({"doctype":"Customer","customer_name":"TEST SYNC UUID","customer_type":"Individual","customer_group":"Individual","territory":"All Territories"}).insert(ignore_permissions=True) +print(f"sync_uuid: {c.sync_uuid}") +print(f"origin_branch: {c.origin_branch}") +frappe.delete_doc("Customer", c.name, force=1) +frappe.db.commit() +' +``` + +Expected: `sync_uuid: ` (not empty), `origin_branch` either empty (no Branch config) or a branch_code. + +- [ ] **Step 5: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/hooks_uuid.py pos_next/hooks.py +git commit -m "feat(sync): auto-fill sync_uuid + origin_branch on before_insert" +``` + +--- + +### Task 19: Full test-suite runner + +**Files:** +- Create: `pos_next/sync/tests/run_all_tests.py` + +- [ ] **Step 1: Write the runner** + +File: `pos_next/sync/tests/run_all_tests.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Run every Plan 1 test module and report PASS/FAIL counts.""" + +import traceback + + +TEST_MODULES = [ + "pos_next.sync.tests.test_sync_site_config", + "pos_next.sync.tests.test_outbox", + "pos_next.sync.tests.test_watermark", + "pos_next.sync.tests.test_payload", + "pos_next.sync.tests.test_base_adapter", + "pos_next.sync.tests.test_registry", + "pos_next.sync.tests.test_conflict", + "pos_next.sync.tests.test_auth", + "pos_next.sync.tests.test_custom_fields", + "pos_next.sync.tests.test_backfill", + "pos_next.sync.tests.test_seeds", +] + + +def run(): + passed = 0 + failed = 0 + for mod_name in TEST_MODULES: + print(f"\n=== {mod_name} ===") + try: + mod = __import__(mod_name, fromlist=["run_all"]) + mod.run_all() + passed += 1 + except Exception: + failed += 1 + print(f"FAILED: {mod_name}") + traceback.print_exc() + print(f"\n\n=== SUMMARY: {passed} passed, {failed} failed ===") + if failed: + raise SystemExit(1) +``` + +- [ ] **Step 2: Run it** + +```bash +cd /home/ubuntu/frappe-bench +bench --site execute pos_next.sync.tests.run_all_tests.run +``` + +Expected: `=== SUMMARY: 11 passed, 0 failed ===`. + +- [ ] **Step 3: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/tests/run_all_tests.py +git commit -m "test(sync): add full Plan 1 test-suite runner" +``` + +--- + +## Done — What Plan 1 Delivers + +After completing all 19 tasks: + +- **All foundation DocTypes exist:** Sync Site Config, Sync DocType Rule, Sync Sibling Branch, Sync Outbox, Sync Watermark, Sync Tombstone, Sync Record State, Sync Field Timestamp, Sync Conflict, Sync Log, Sync Dead Letter, Sync History. +- **Custom fields installed** on Sales Invoice, Payment Entry, SLE, POS Opening/Closing Shift, Customer. +- **Existing rows backfilled** with sync_uuid. +- **POS Next Sync Agent role** created. +- **Seeded default rules** populated on new Sync Site Config. +- **`pos_next/sync/` module skeleton** with auth, transport, registry, BaseSyncAdapter, conflict resolver, payload helpers, defaults, exceptions. +- **"Test Sync Connection" button** works and verifies login against central. +- **Automatic sync_uuid + origin_branch generation** on document creation. +- **11 test modules, all passing.** +- **No data flows yet** — that's Plan 2 (Masters pull) and Plan 3 (Transactions + failover). + +## Self-Review Checklist (do not skip) + +Before considering Plan 1 complete, verify: + +- [ ] All 19 tasks committed. +- [ ] `bench --site migrate` runs clean. +- [ ] `bench --site execute pos_next.sync.tests.run_all_tests.run` reports 0 failures. +- [ ] A test Branch Sync Site Config can be created (fill central_url=`https://bogus.test`) and "Test Sync Connection" shows red "Network error" (proves wiring). +- [ ] A new Customer gets a sync_uuid and origin_branch set automatically. +- [ ] `bench --site migrate` a second time is a no-op (idempotent). diff --git a/docs/superpowers/plans/2026-04-06-masters-pull-plan-2.md b/docs/superpowers/plans/2026-04-06-masters-pull-plan-2.md new file mode 100644 index 00000000..a834ddb8 --- /dev/null +++ b/docs/superpowers/plans/2026-04-06-masters-pull-plan-2.md @@ -0,0 +1,1701 @@ +# Masters Pull — Implementation Plan (Plan 2 of 3) + +> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking. + +**Goal:** Implement the first real sync data flow — branch pulls master data from central via watermark-based pagination, applies through adapters, tracks state, and handles tombstones. + +**Architecture:** Central exposes a `changes_since` API that returns upserts + tombstones since a watermark. Branch runs a `MastersPuller` on a cron schedule that iterates the Sync DocType Rule registry, pulls each Central→Branch DocType, applies via adapter, and advances the watermark. Adapters handle per-DocType logic (child tables, dedup, composite keys). + +**Tech Stack:** Frappe Framework (Python 3.10+/3.14), Frappe ORM, `requests` for HTTP, `bench execute` for tests, Frappe scheduler for cron. + +**Spec:** `docs/superpowers/specs/2026-04-06-masters-pull-design.md` + +**Prerequisites:** +- Plan 1 fully complete (all 19 tasks, 11 test modules passing). +- Two-bench dev environment running (frappe-bench port 8000 as central, frappe-bench-16 port 8001 as branch). +- Testing uses `bench execute` — never `bench run-tests` (wipes data). +- Use tabs for indentation in Python and JS. + +--- + +## File Structure + +### New files + +| File | Responsibility | +|------|----------------| +| `pos_next/sync/api/__init__.py` | API package marker | +| `pos_next/sync/api/changes.py` | Central endpoint: `changes_since` — paginated upserts + tombstones | +| `pos_next/sync/api/health.py` | Central endpoint: server time + version info | +| `pos_next/sync/masters_puller.py` | Branch job: `pull_if_due` entry point + `MastersPuller` class | +| `pos_next/sync/hooks.py` | Tombstone `on_trash` hook for synced masters | +| `pos_next/sync/adapters/item.py` | Item adapter — handles child tables | +| `pos_next/sync/adapters/item_price.py` | Item Price adapter — composite conflict key | +| `pos_next/sync/adapters/customer.py` | Customer adapter — mobile_no dedup | +| `pos_next/sync/adapters/generic_master.py` | Default adapter for ~20 simple masters | +| `pos_next/sync/tests/test_changes_api.py` | Tests for changes_since endpoint | +| `pos_next/sync/tests/test_masters_puller.py` | Tests for MastersPuller | +| `pos_next/sync/tests/test_item_adapter.py` | Tests for ItemAdapter | +| `pos_next/sync/tests/test_item_price_adapter.py` | Tests for ItemPriceAdapter | +| `pos_next/sync/tests/test_customer_adapter.py` | Tests for CustomerAdapter | +| `pos_next/sync/tests/test_generic_adapter.py` | Tests for GenericMasterAdapter | +| `pos_next/sync/tests/run_plan2_tests.py` | Plan 2 test runner | + +### Modified files + +| File | What changes | +|------|--------------| +| `pos_next/hooks.py` | Add `on_trash` hooks for synced masters, add `cron` scheduler for `pull_if_due` | + +--- + +## Running Tests + +All tests are run via `bench execute`: + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-central execute pos_next.sync.tests.test_changes_api.run_all +``` + +Each test module exposes a `run_all()` function. + +--- + +## Tasks + +### Task 1: Create `changes_since` API endpoint + +**Files:** +- Create: `pos_next/sync/api/__init__.py` +- Create: `pos_next/sync/api/changes.py` +- Create: `pos_next/sync/tests/test_changes_api.py` + +- [ ] **Step 1: Create API package** + +```bash +mkdir -p /home/ubuntu/frappe-bench/apps/pos_next/pos_next/sync/api +touch /home/ubuntu/frappe-bench/apps/pos_next/pos_next/sync/api/__init__.py +``` + +- [ ] **Step 2: Write failing tests** + +File: `pos_next/sync/tests/test_changes_api.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +import json + + +def _cleanup(): + frappe.db.delete("Sync Tombstone") + frappe.db.commit() + + +def test_changes_since_returns_upserts(): + """changes_since returns records modified after the given watermark.""" + from pos_next.sync.api.changes import changes_since + + # Use a DocType that definitely has rows — DocType itself + result = changes_since(doctype="DocType", since="2000-01-01 00:00:00", limit=5) + assert "upserts" in result + assert "tombstones" in result + assert "next_since" in result + assert "has_more" in result + assert len(result["upserts"]) <= 5 + assert isinstance(result["upserts"], list) + if result["upserts"]: + assert "name" in result["upserts"][0] + assert "modified" in result["upserts"][0] + print("PASS: test_changes_since_returns_upserts") + + +def test_changes_since_pagination(): + """has_more=True when more records exist beyond the limit.""" + from pos_next.sync.api.changes import changes_since + + result = changes_since(doctype="DocType", since="2000-01-01 00:00:00", limit=2) + # There are certainly more than 2 DocTypes + assert result["has_more"] is True + assert len(result["upserts"]) == 2 + assert result["next_since"] is not None + print("PASS: test_changes_since_pagination") + + +def test_changes_since_includes_tombstones(): + """Tombstones for the given doctype are included.""" + _cleanup() + try: + from pos_next.sync.api.changes import changes_since + from pos_next.pos_next.doctype.sync_tombstone.sync_tombstone import SyncTombstone + + SyncTombstone.record("Item", "FAKE-ITEM-001") + SyncTombstone.record("Item", "FAKE-ITEM-002") + SyncTombstone.record("Customer", "FAKE-CUST-001") # different doctype + + result = changes_since(doctype="Item", since="2000-01-01 00:00:00", limit=100) + item_tombstones = [t for t in result["tombstones"] if t["reference_name"].startswith("FAKE-ITEM")] + assert len(item_tombstones) == 2, f"Expected 2 Item tombstones, got {len(item_tombstones)}" + + # Customer tombstone should NOT appear in Item query + cust_tombstones = [t for t in result["tombstones"] if t["reference_name"].startswith("FAKE-CUST")] + assert len(cust_tombstones) == 0 + print("PASS: test_changes_since_includes_tombstones") + finally: + _cleanup() + + +def test_changes_since_empty_result(): + """Future watermark returns empty result.""" + from pos_next.sync.api.changes import changes_since + + result = changes_since(doctype="DocType", since="2099-01-01 00:00:00", limit=100) + assert len(result["upserts"]) == 0 + assert result["has_more"] is False + print("PASS: test_changes_since_empty_result") + + +def run_all(): + test_changes_since_returns_upserts() + test_changes_since_pagination() + test_changes_since_includes_tombstones() + test_changes_since_empty_result() + print("\nAll changes_since API tests PASSED") +``` + +- [ ] **Step 3: Run tests to confirm failure** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-central execute pos_next.sync.tests.test_changes_api.run_all +``` + +Expected: FAIL — module missing. + +- [ ] **Step 4: Create `changes.py`** + +File: `pos_next/sync/api/changes.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Central-side API: serve upserts + tombstones since a watermark.""" + +import frappe + + +@frappe.whitelist() +def changes_since(doctype, since, limit=100): + """ + Return records modified after `since` for the given DocType, + plus any tombstones recorded after `since`. + + Response shape: + { + "upserts": [{...}, ...], + "tombstones": [{"reference_name": ..., "deleted_at": ...}, ...], + "next_since": "2026-04-06 10:00:00", + "has_more": true|false + } + """ + limit = int(limit) + + # Fetch limit+1 to detect has_more + records = frappe.get_all( + doctype, + filters={"modified": (">", since)}, + order_by="modified asc", + limit_page_length=limit + 1, + fields=["name"], + ) + + has_more = len(records) > limit + records = records[:limit] + + # Serialize each record fully (with children) + upserts = [] + for row in records: + try: + doc = frappe.get_doc(doctype, row.name) + payload = doc.as_dict(convert_dates_to_str=True) + upserts.append(payload) + except Exception: + # Record may have been deleted between listing and fetching + continue + + # Compute next_since from the last upsert's modified + next_since = None + if upserts: + next_since = upserts[-1].get("modified") + + # Fetch tombstones + tombstones = frappe.get_all( + "Sync Tombstone", + filters={ + "reference_doctype": doctype, + "deleted_at": (">", since), + }, + fields=["reference_name", "deleted_at"], + order_by="deleted_at asc", + ) + # Convert to plain dicts + tombstones = [{"reference_name": t.reference_name, "deleted_at": str(t.deleted_at)} for t in tombstones] + + return { + "upserts": upserts, + "tombstones": tombstones, + "next_since": next_since, + "has_more": has_more, + } +``` + +- [ ] **Step 5: Run tests to verify they pass** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-central execute pos_next.sync.tests.test_changes_api.run_all +``` + +Expected: all 4 tests PASS. + +- [ ] **Step 6: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/api/ pos_next/sync/tests/test_changes_api.py +git commit -m "feat(sync): add changes_since API endpoint for masters pull + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 2: Create `health` API endpoint + +**Files:** +- Create: `pos_next/sync/api/health.py` + +- [ ] **Step 1: Create `health.py`** + +File: `pos_next/sync/api/health.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Health endpoint for sync connectivity checks.""" + +import frappe +from frappe.utils import now_datetime + + +@frappe.whitelist(allow_guest=True) +def health(): + """ + Return server time, version info, and site role. + Public — no auth required. Used by branch to check connectivity. + """ + frappe_version = frappe.__version__ + pos_next_version = "unknown" + try: + import pos_next + pos_next_version = getattr(pos_next, "__version__", "unknown") + except Exception: + pass + + site_role = frappe.db.get_value( + "Sync Site Config", {}, "site_role" + ) or "unconfigured" + + return { + "server_time": str(now_datetime()), + "frappe_version": frappe_version, + "pos_next_version": pos_next_version, + "site_role": site_role, + } +``` + +- [ ] **Step 2: Smoke test** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-central execute pos_next.sync.api.health.health +``` + +Expected: prints dict with `server_time`, `frappe_version`, `pos_next_version`, `site_role`. + +- [ ] **Step 3: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/api/health.py +git commit -m "feat(sync): add health API endpoint + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 3: Create `GenericMasterAdapter` for simple masters + +**Files:** +- Create: `pos_next/sync/adapters/generic_master.py` +- Create: `pos_next/sync/tests/test_generic_adapter.py` + +- [ ] **Step 1: Write failing tests** + +File: `pos_next/sync/tests/test_generic_adapter.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + + +def test_generic_adapter_registered_for_all_masters(): + """GenericMasterAdapter registers for all simple master DocTypes.""" + from pos_next.sync.adapters import generic_master # triggers registration + from pos_next.sync import registry + + expected = [ + "POS Profile", "Warehouse", "Mode of Payment", "Item Group", + "UOM", "Price List", "Company", "Currency", "Branch", + "Customer Group", "Sales Person", "Employee", "User", + "Role Profile", "Sales Taxes and Charges Template", + "Item Tax Template", "POS Settings", "Loyalty Program", + "Item Barcode", + ] + registered = registry.list_registered() + for dt in expected: + assert dt in registered, f"{dt} not registered by GenericMasterAdapter" + print("PASS: test_generic_adapter_registered_for_all_masters") + + +def test_generic_adapter_uses_default_behavior(): + """GenericMasterAdapter has default conflict_key and validate_incoming.""" + from pos_next.sync.adapters.generic_master import GenericMasterAdapter + + adapter = GenericMasterAdapter() + adapter.doctype = "Warehouse" + assert adapter.conflict_key({"name": "WH-001"}) == ("name",) + adapter.validate_incoming({"name": "WH-001"}) # should not raise + print("PASS: test_generic_adapter_uses_default_behavior") + + +def run_all(): + test_generic_adapter_registered_for_all_masters() + test_generic_adapter_uses_default_behavior() + print("\nAll GenericMasterAdapter tests PASSED") +``` + +- [ ] **Step 2: Run test to confirm failure** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-central execute pos_next.sync.tests.test_generic_adapter.run_all +``` + +Expected: FAIL — module missing. + +- [ ] **Step 3: Create `generic_master.py`** + +File: `pos_next/sync/adapters/generic_master.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Generic adapter for simple master DocTypes that need no special logic.""" + +from pos_next.sync.adapters.base import BaseSyncAdapter +from pos_next.sync import registry + + +GENERIC_MASTER_DOCTYPES = [ + "POS Profile", + "Warehouse", + "Mode of Payment", + "Item Group", + "UOM", + "Price List", + "Company", + "Currency", + "Branch", + "Customer Group", + "Sales Person", + "Employee", + "User", + "Role Profile", + "Sales Taxes and Charges Template", + "Item Tax Template", + "POS Settings", + "Loyalty Program", + "Item Barcode", +] + + +class GenericMasterAdapter(BaseSyncAdapter): + """ + Default adapter for masters that need only standard upsert-by-name. + One class registered for many DocTypes. + """ + pass + + +# Register for all generic masters +for _dt in GENERIC_MASTER_DOCTYPES: + # Create a unique class per DocType so registry stores distinct entries + _cls = type(f"GenericMasterAdapter_{_dt.replace(' ', '_')}", (GenericMasterAdapter,), {"doctype": _dt}) + registry.register(_cls) +``` + +- [ ] **Step 4: Run tests to verify they pass** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-central execute pos_next.sync.tests.test_generic_adapter.run_all +``` + +Expected: both tests PASS. + +- [ ] **Step 5: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/adapters/generic_master.py pos_next/sync/tests/test_generic_adapter.py +git commit -m "feat(sync): add GenericMasterAdapter for simple masters + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 4: Create `ItemAdapter` + +**Files:** +- Create: `pos_next/sync/adapters/item.py` +- Create: `pos_next/sync/tests/test_item_adapter.py` + +- [ ] **Step 1: Write failing tests** + +File: `pos_next/sync/tests/test_item_adapter.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +def _cleanup(): + for name in frappe.get_all("Item", filters={"name": ("like", "SYNCTEST-%")}, pluck="name"): + frappe.delete_doc("Item", name, force=True, ignore_permissions=True) + frappe.db.commit() + + +def test_item_adapter_registered(): + """ItemAdapter is registered for 'Item'.""" + from pos_next.sync.adapters import item # triggers registration + from pos_next.sync import registry + adapter = registry.get_adapter("Item") + assert adapter is not None, "Item adapter not registered" + assert adapter.doctype == "Item" + print("PASS: test_item_adapter_registered") + + +def test_item_adapter_apply_creates_item(): + """apply_incoming creates an Item from payload.""" + _cleanup() + try: + from pos_next.sync.adapters.item import ItemAdapter + adapter = ItemAdapter() + + # Minimal Item payload + payload = { + "name": "SYNCTEST-APPLE", + "item_code": "SYNCTEST-APPLE", + "item_name": "Apple", + "item_group": "All Item Groups", + "stock_uom": "Nos", + "is_stock_item": 1, + } + result = adapter.apply_incoming(payload, "update") + assert result == "SYNCTEST-APPLE" + assert frappe.db.exists("Item", "SYNCTEST-APPLE") + print("PASS: test_item_adapter_apply_creates_item") + finally: + _cleanup() + + +def test_item_adapter_apply_updates_item(): + """apply_incoming updates an existing Item.""" + _cleanup() + try: + from pos_next.sync.adapters.item import ItemAdapter + adapter = ItemAdapter() + + # Create first + payload = { + "name": "SYNCTEST-BANANA", + "item_code": "SYNCTEST-BANANA", + "item_name": "Banana", + "item_group": "All Item Groups", + "stock_uom": "Nos", + } + adapter.apply_incoming(payload, "update") + + # Update + payload["item_name"] = "Banana (Updated)" + adapter.apply_incoming(payload, "update") + + doc = frappe.get_doc("Item", "SYNCTEST-BANANA") + assert doc.item_name == "Banana (Updated)" + print("PASS: test_item_adapter_apply_updates_item") + finally: + _cleanup() + + +def test_item_adapter_serialize_includes_children(): + """serialize returns payload with child tables.""" + _cleanup() + try: + from pos_next.sync.adapters.item import ItemAdapter + adapter = ItemAdapter() + + doc = frappe.get_doc({ + "doctype": "Item", + "item_code": "SYNCTEST-WITH-CHILD", + "item_name": "With Children", + "item_group": "All Item Groups", + "stock_uom": "Nos", + }) + doc.insert(ignore_permissions=True) + doc.reload() + + payload = adapter.serialize(doc) + assert "name" in payload + # as_dict includes child tables as lists + assert isinstance(payload, dict) + print("PASS: test_item_adapter_serialize_includes_children") + finally: + _cleanup() + + +def run_all(): + test_item_adapter_registered() + test_item_adapter_apply_creates_item() + test_item_adapter_apply_updates_item() + test_item_adapter_serialize_includes_children() + print("\nAll ItemAdapter tests PASSED") +``` + +- [ ] **Step 2: Run test to confirm failure** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-central execute pos_next.sync.tests.test_item_adapter.run_all +``` + +Expected: FAIL — module missing. + +- [ ] **Step 3: Create `item.py`** + +File: `pos_next/sync/adapters/item.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for Item DocType — handles child tables and variant awareness.""" + +import frappe +from pos_next.sync.adapters.base import BaseSyncAdapter +from pos_next.sync.payload import to_payload, strip_meta +from pos_next.sync import registry + + +class ItemAdapter(BaseSyncAdapter): + doctype = "Item" + + def serialize(self, doc): + """Include child tables (barcodes, defaults, etc.).""" + return to_payload(doc) + + def pre_apply_transform(self, payload): + """Strip meta fields and remove server-only keys from children.""" + cleaned = strip_meta(payload) + # Strip meta from child table rows too + for key, val in cleaned.items(): + if isinstance(val, list): + cleaned[key] = [strip_meta(row) if isinstance(row, dict) else row for row in val] + return cleaned + + def apply_incoming(self, payload, operation): + """ + Upsert Item. Special handling: + - Don't delete template items that have local variants referencing them. + - On update, handle child table replacement carefully. + """ + name = payload.get("name") + if not name: + raise ValueError("Item payload missing 'name'") + + if operation == "delete": + # Don't delete templates that have local variants + if frappe.db.exists("Item", name): + has_variants = frappe.db.get_value("Item", name, "has_variants") + if has_variants: + variant_count = frappe.db.count("Item", {"variant_of": name}) + if variant_count > 0: + frappe.log_error( + f"Skipping delete of template Item {name}: {variant_count} variants exist", + "Sync Item Adapter", + ) + return name + frappe.delete_doc("Item", name, ignore_permissions=True, force=True) + return name + + payload = self.pre_apply_transform(payload) + + if frappe.db.exists("Item", name): + doc = frappe.get_doc("Item", name) + # Update simple fields + for key, val in payload.items(): + if not isinstance(val, list) and key not in ("doctype", "name"): + doc.set(key, val) + doc.save(ignore_permissions=True) + else: + doc = frappe.get_doc({"doctype": "Item", **payload}) + doc.insert(ignore_permissions=True) + return doc.name + + +registry.register(ItemAdapter) +``` + +- [ ] **Step 4: Run tests to verify they pass** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-central execute pos_next.sync.tests.test_item_adapter.run_all +``` + +Expected: all 4 tests PASS. + +- [ ] **Step 5: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/adapters/item.py pos_next/sync/tests/test_item_adapter.py +git commit -m "feat(sync): add ItemAdapter with child table and variant handling + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 5: Create `ItemPriceAdapter` + +**Files:** +- Create: `pos_next/sync/adapters/item_price.py` +- Create: `pos_next/sync/tests/test_item_price_adapter.py` + +- [ ] **Step 1: Write failing tests** + +File: `pos_next/sync/tests/test_item_price_adapter.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +def _cleanup(): + for name in frappe.get_all("Item Price", filters={"item_code": ("like", "SYNCTEST-%")}, pluck="name"): + frappe.delete_doc("Item Price", name, force=True, ignore_permissions=True) + for name in frappe.get_all("Item", filters={"name": ("like", "SYNCTEST-%")}, pluck="name"): + frappe.delete_doc("Item", name, force=True, ignore_permissions=True) + frappe.db.commit() + + +def _ensure_test_item(): + """Create a test item if not exists.""" + if not frappe.db.exists("Item", "SYNCTEST-IP-ITEM"): + frappe.get_doc({ + "doctype": "Item", + "item_code": "SYNCTEST-IP-ITEM", + "item_name": "IP Test Item", + "item_group": "All Item Groups", + "stock_uom": "Nos", + }).insert(ignore_permissions=True) + + +def test_item_price_adapter_registered(): + """ItemPriceAdapter is registered for 'Item Price'.""" + from pos_next.sync.adapters import item_price # triggers registration + from pos_next.sync import registry + adapter = registry.get_adapter("Item Price") + assert adapter is not None, "Item Price adapter not registered" + print("PASS: test_item_price_adapter_registered") + + +def test_item_price_adapter_conflict_key(): + """Conflict key is composite: (item_code, price_list, uom).""" + from pos_next.sync.adapters.item_price import ItemPriceAdapter + adapter = ItemPriceAdapter() + payload = {"item_code": "ITEM-001", "price_list": "Standard Selling", "uom": "Nos"} + assert adapter.conflict_key(payload) == ("item_code", "price_list", "uom") + print("PASS: test_item_price_adapter_conflict_key") + + +def test_item_price_adapter_apply_by_composite_key(): + """apply_incoming looks up by composite key, not by name.""" + _cleanup() + try: + _ensure_test_item() + from pos_next.sync.adapters.item_price import ItemPriceAdapter + adapter = ItemPriceAdapter() + + # First insert — payload has a name from central + payload = { + "name": "CENTRAL-IP-001", + "item_code": "SYNCTEST-IP-ITEM", + "price_list": "Standard Selling", + "price_list_rate": 100, + "uom": "Nos", + "currency": frappe.defaults.get_global_default("currency") or "USD", + } + result = adapter.apply_incoming(payload, "update") + assert frappe.db.exists("Item Price", {"item_code": "SYNCTEST-IP-ITEM", "price_list": "Standard Selling"}) + + # Second apply with updated price — should update, not create duplicate + payload["price_list_rate"] = 150 + result2 = adapter.apply_incoming(payload, "update") + count = frappe.db.count("Item Price", {"item_code": "SYNCTEST-IP-ITEM", "price_list": "Standard Selling"}) + assert count == 1, f"Expected 1 Item Price, got {count}" + + rate = frappe.db.get_value("Item Price", {"item_code": "SYNCTEST-IP-ITEM", "price_list": "Standard Selling"}, "price_list_rate") + assert float(rate) == 150.0, f"Expected 150, got {rate}" + print("PASS: test_item_price_adapter_apply_by_composite_key") + finally: + _cleanup() + + +def run_all(): + test_item_price_adapter_registered() + test_item_price_adapter_conflict_key() + test_item_price_adapter_apply_by_composite_key() + print("\nAll ItemPriceAdapter tests PASSED") +``` + +- [ ] **Step 2: Create `item_price.py`** + +File: `pos_next/sync/adapters/item_price.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for Item Price — uses composite conflict key.""" + +import frappe +from pos_next.sync.adapters.base import BaseSyncAdapter +from pos_next.sync.payload import strip_meta +from pos_next.sync import registry + + +class ItemPriceAdapter(BaseSyncAdapter): + doctype = "Item Price" + + def conflict_key(self, payload): + """Item Price identity is by item_code + price_list + uom.""" + return ("item_code", "price_list", "uom") + + def apply_incoming(self, payload, operation): + """Look up by composite key first. If found, update. If not, insert.""" + if operation == "delete": + return super().apply_incoming(payload, operation) + + payload = self.pre_apply_transform(payload) + cleaned = strip_meta(payload) + + # Look up by composite key + filters = { + "item_code": cleaned.get("item_code"), + "price_list": cleaned.get("price_list"), + } + if cleaned.get("uom"): + filters["uom"] = cleaned["uom"] + + existing = frappe.db.get_value("Item Price", filters, "name") + + if existing: + doc = frappe.get_doc("Item Price", existing) + for key, val in cleaned.items(): + if key not in ("doctype", "name") and not isinstance(val, list): + doc.set(key, val) + doc.save(ignore_permissions=True) + return doc.name + else: + # Remove central's name — let local auto-generate + cleaned.pop("name", None) + doc = frappe.get_doc({"doctype": "Item Price", **cleaned}) + doc.insert(ignore_permissions=True) + return doc.name + + +registry.register(ItemPriceAdapter) +``` + +- [ ] **Step 3: Run tests to verify they pass** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-central execute pos_next.sync.tests.test_item_price_adapter.run_all +``` + +Expected: all 3 tests PASS. + +- [ ] **Step 4: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/adapters/item_price.py pos_next/sync/tests/test_item_price_adapter.py +git commit -m "feat(sync): add ItemPriceAdapter with composite conflict key + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 6: Create `CustomerAdapter` + +**Files:** +- Create: `pos_next/sync/adapters/customer.py` +- Create: `pos_next/sync/tests/test_customer_adapter.py` + +- [ ] **Step 1: Write failing tests** + +File: `pos_next/sync/tests/test_customer_adapter.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +def _cleanup(): + for name in frappe.get_all("Customer", filters={"name": ("like", "SYNCTEST-%")}, pluck="name"): + frappe.delete_doc("Customer", name, force=True, ignore_permissions=True) + frappe.db.commit() + + +def test_customer_adapter_registered(): + """CustomerAdapter is registered for 'Customer'.""" + from pos_next.sync.adapters import customer # triggers registration + from pos_next.sync import registry + adapter = registry.get_adapter("Customer") + assert adapter is not None + assert adapter.doctype == "Customer" + print("PASS: test_customer_adapter_registered") + + +def test_customer_adapter_conflict_key(): + """Conflict key is mobile_no for dedup.""" + from pos_next.sync.adapters.customer import CustomerAdapter + adapter = CustomerAdapter() + assert adapter.conflict_key({"mobile_no": "01234567890"}) == ("mobile_no",) + print("PASS: test_customer_adapter_conflict_key") + + +def test_customer_adapter_dedup_by_mobile(): + """If a customer with same mobile_no exists under a different name, return existing.""" + _cleanup() + try: + from pos_next.sync.adapters.customer import CustomerAdapter + adapter = CustomerAdapter() + + # Create local customer + local = frappe.get_doc({ + "doctype": "Customer", + "customer_name": "SYNCTEST-Local Guy", + "customer_type": "Individual", + "customer_group": frappe.db.get_single_value("Selling Settings", "customer_group") or "All Customer Groups", + "territory": frappe.db.get_single_value("Selling Settings", "territory") or "All Territories", + "mobile_no": "01099999999", + }) + local.insert(ignore_permissions=True) + frappe.db.commit() + + # Incoming from central with SAME mobile but different name + payload = { + "name": "SYNCTEST-Central Guy", + "customer_name": "Central Guy", + "customer_type": "Individual", + "customer_group": local.customer_group, + "territory": local.territory, + "mobile_no": "01099999999", + } + result = adapter.apply_incoming(payload, "update") + # Should return local's name (dedup), not create a new one + assert result == local.name, f"Expected {local.name}, got {result}" + + # Verify no duplicate + count = frappe.db.count("Customer", {"mobile_no": "01099999999"}) + assert count == 1, f"Expected 1 customer with this mobile, got {count}" + print("PASS: test_customer_adapter_dedup_by_mobile") + finally: + _cleanup() + + +def test_customer_adapter_creates_new_when_no_match(): + """If no mobile_no match, create normally.""" + _cleanup() + try: + from pos_next.sync.adapters.customer import CustomerAdapter + adapter = CustomerAdapter() + + payload = { + "name": "SYNCTEST-NewCust", + "customer_name": "New Customer", + "customer_type": "Individual", + "customer_group": frappe.db.get_single_value("Selling Settings", "customer_group") or "All Customer Groups", + "territory": frappe.db.get_single_value("Selling Settings", "territory") or "All Territories", + "mobile_no": "01055555555", + } + result = adapter.apply_incoming(payload, "update") + assert frappe.db.exists("Customer", result) + print("PASS: test_customer_adapter_creates_new_when_no_match") + finally: + _cleanup() + + +def run_all(): + test_customer_adapter_registered() + test_customer_adapter_conflict_key() + test_customer_adapter_dedup_by_mobile() + test_customer_adapter_creates_new_when_no_match() + print("\nAll CustomerAdapter tests PASSED") +``` + +- [ ] **Step 2: Create `customer.py`** + +File: `pos_next/sync/adapters/customer.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for Customer — bidirectional with mobile_no dedup.""" + +import frappe +from pos_next.sync.adapters.base import BaseSyncAdapter +from pos_next.sync.payload import strip_meta +from pos_next.sync import registry + + +class CustomerAdapter(BaseSyncAdapter): + doctype = "Customer" + + def conflict_key(self, payload): + return ("mobile_no",) + + def apply_incoming(self, payload, operation): + """ + Dedup by mobile_no: if a local customer has the same mobile_no, + return the existing name rather than creating a duplicate. + """ + if operation == "delete": + return super().apply_incoming(payload, operation) + + payload = self.pre_apply_transform(payload) + cleaned = strip_meta(payload) + name = cleaned.get("name") + mobile_no = cleaned.get("mobile_no") + + # Dedup: check if local customer with same mobile_no exists + if mobile_no: + existing = frappe.db.get_value( + "Customer", + {"mobile_no": mobile_no}, + "name", + ) + if existing and existing != name: + # Local record exists under a different name — return it (dedup) + return existing + + # Standard upsert by name + if name and frappe.db.exists("Customer", name): + doc = frappe.get_doc("Customer", name) + for key, val in cleaned.items(): + if key not in ("doctype", "name") and not isinstance(val, list): + doc.set(key, val) + doc.save(ignore_permissions=True) + return doc.name + else: + doc = frappe.get_doc({"doctype": "Customer", **cleaned}) + doc.insert(ignore_permissions=True) + return doc.name + + +registry.register(CustomerAdapter) +``` + +- [ ] **Step 3: Run tests to verify they pass** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-central execute pos_next.sync.tests.test_customer_adapter.run_all +``` + +Expected: all 4 tests PASS. + +- [ ] **Step 4: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/adapters/customer.py pos_next/sync/tests/test_customer_adapter.py +git commit -m "feat(sync): add CustomerAdapter with mobile_no dedup + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 7: Create `MastersPuller` — the branch-side pull engine + +**Files:** +- Create: `pos_next/sync/masters_puller.py` +- Create: `pos_next/sync/tests/test_masters_puller.py` + +- [ ] **Step 1: Write failing tests** + +File: `pos_next/sync/tests/test_masters_puller.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +import json +from unittest.mock import patch, MagicMock + + +def test_pull_if_due_noop_on_central(): + """pull_if_due does nothing on a Central-role site.""" + from pos_next.sync.masters_puller import pull_if_due + + # If no Branch config exists, it's a no-op + original_count = frappe.db.count("Sync Log") + pull_if_due() + # Should not have created any sync log (no branch config on this site) + # This test runs on pos-central which is Central role + new_count = frappe.db.count("Sync Log") + # May or may not create a log depending on config — just verify no crash + print("PASS: test_pull_if_due_noop_on_central") + + +def test_masters_puller_processes_upserts(): + """MastersPuller applies upserts from changes_since response.""" + from pos_next.sync.masters_puller import MastersPuller + + fake_session = MagicMock() + fake_response = MagicMock() + fake_response.status_code = 200 + fake_response.json.return_value = { + "message": { + "upserts": [ + {"name": "TEST-PULLER-WH", "warehouse_name": "Test Puller WH", "company": "", "modified": "2026-04-06 10:00:00"}, + ], + "tombstones": [], + "next_since": "2026-04-06 10:00:00", + "has_more": False, + } + } + fake_session.get.return_value = fake_response + + puller = MastersPuller(fake_session) + upserted, deleted, errors = puller._pull_one_doctype("Warehouse", "2000-01-01 00:00:00", 100) + assert upserted >= 0 # may be 0 if hash matches or apply fails on test site + assert errors >= 0 + print("PASS: test_masters_puller_processes_upserts") + + +def test_masters_puller_advances_watermark(): + """After a successful pull, the watermark is advanced.""" + from pos_next.sync.masters_puller import MastersPuller + from pos_next.pos_next.doctype.sync_watermark.sync_watermark import SyncWatermark + + # Clean watermark + frappe.db.delete("Sync Watermark", {"doctype_name": "Test Puller DT"}) + frappe.db.commit() + + fake_session = MagicMock() + fake_response = MagicMock() + fake_response.status_code = 200 + fake_response.json.return_value = { + "message": { + "upserts": [], + "tombstones": [], + "next_since": "2026-04-06 12:00:00", + "has_more": False, + } + } + fake_session.get.return_value = fake_response + + puller = MastersPuller(fake_session) + puller._pull_one_doctype("Test Puller DT", "2000-01-01 00:00:00", 100) + + wm = SyncWatermark.get_for("Test Puller DT") + assert wm is not None, "Watermark should have been created" + assert str(wm.last_modified) == "2026-04-06 12:00:00" + print("PASS: test_masters_puller_advances_watermark") + + # Cleanup + frappe.db.delete("Sync Watermark", {"doctype_name": "Test Puller DT"}) + frappe.db.commit() + + +def test_masters_puller_handles_http_error(): + """HTTP errors are caught and don't crash the puller.""" + from pos_next.sync.masters_puller import MastersPuller + import requests + + fake_session = MagicMock() + fake_session.get.side_effect = requests.ConnectionError("test error") + + puller = MastersPuller(fake_session) + upserted, deleted, errors = puller._pull_one_doctype("Warehouse", "2000-01-01 00:00:00", 100) + assert errors > 0 + print("PASS: test_masters_puller_handles_http_error") + + +def run_all(): + test_pull_if_due_noop_on_central() + test_masters_puller_processes_upserts() + test_masters_puller_advances_watermark() + test_masters_puller_handles_http_error() + print("\nAll MastersPuller tests PASSED") +``` + +- [ ] **Step 2: Create `masters_puller.py`** + +File: `pos_next/sync/masters_puller.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Branch-side masters puller — pulls Central→Branch DocTypes via watermark.""" + +import frappe +from frappe.utils import now_datetime, time_diff_in_seconds + +from pos_next.sync.defaults import DEFAULT_PULL_MASTERS_INTERVAL_SECONDS, DEFAULT_BATCH_SIZE +from pos_next.sync.payload import compute_hash + + +def pull_if_due(): + """ + Scheduler entry point (called every minute). + Checks if this site is a Branch and if enough time has passed since last pull. + """ + cfg_name = frappe.db.get_value("Sync Site Config", {"site_role": "Branch", "enabled": 1}, "name") + if not cfg_name: + return # Not a branch or not enabled + + cfg = frappe.get_doc("Sync Site Config", cfg_name) + interval = cfg.pull_masters_interval_seconds or DEFAULT_PULL_MASTERS_INTERVAL_SECONDS + + if cfg.last_pull_masters_at: + elapsed = time_diff_in_seconds(now_datetime(), cfg.last_pull_masters_at) + if elapsed < interval: + return # Not due yet + + # Build session and run pull + try: + from pos_next.sync.transport import build_session_from_config + session = build_session_from_config() + puller = MastersPuller(session) + puller.run(cfg) + except Exception as e: + frappe.db.set_value("Sync Site Config", cfg_name, "last_sync_error", str(e)[:500]) + frappe.db.commit() + _log("pull_masters", "failure", error=str(e)) + + +class MastersPuller: + """Pulls master data from central for all Central→Branch DocTypes.""" + + def __init__(self, session): + self.session = session + + def run(self, cfg): + """Execute a full pull cycle for all enabled Central→Branch rules.""" + import time + start = time.time() + + rules = self._get_pull_rules(cfg) + total_upserted = 0 + total_deleted = 0 + total_errors = 0 + + for rule in rules: + dt = rule.doctype_name + batch_size = rule.batch_size or DEFAULT_BATCH_SIZE + watermark = self._get_watermark(dt) + + upserted, deleted, errors = self._pull_one_doctype(dt, watermark, batch_size) + total_upserted += upserted + total_deleted += deleted + total_errors += errors + + # Update last pull timestamp + frappe.db.set_value("Sync Site Config", cfg.name, "last_pull_masters_at", now_datetime()) + frappe.db.commit() + + duration_ms = int((time.time() - start) * 1000) + _log( + "pull_masters", "success" if total_errors == 0 else "partial", + duration_ms=duration_ms, + records_touched=total_upserted + total_deleted, + context={"upserted": total_upserted, "deleted": total_deleted, "errors": total_errors}, + ) + + def _get_pull_rules(self, cfg): + """Get enabled Central→Branch rules sorted by priority.""" + rules = [] + for rule in (cfg.synced_doctypes or []): + if not rule.enabled: + continue + if rule.direction in ("Central→Branch", "Bidirectional"): + rules.append(rule) + rules.sort(key=lambda r: r.priority or 100) + return rules + + def _get_watermark(self, doctype_name): + """Get last_modified watermark for a DocType, or epoch.""" + from pos_next.pos_next.doctype.sync_watermark.sync_watermark import SyncWatermark + wm = SyncWatermark.get_for(doctype_name) + if wm and wm.last_modified: + return str(wm.last_modified) + return "2000-01-01 00:00:00" + + def _pull_one_doctype(self, doctype_name, since, batch_size): + """ + Pull all pages for one DocType. Returns (upserted, deleted, errors). + """ + total_upserted = 0 + total_deleted = 0 + total_errors = 0 + current_since = since + + while True: + try: + resp = self.session.get( + "/api/method/pos_next.sync.api.changes.changes_since", + params={ + "doctype": doctype_name, + "since": current_since, + "limit": batch_size, + }, + ) + if resp.status_code != 200: + total_errors += 1 + break + + data = resp.json().get("message", {}) + if not data: + break + + except Exception as e: + total_errors += 1 + frappe.log_error(f"Pull {doctype_name}: {e}", "MastersPuller") + break + + # Apply upserts + for payload in data.get("upserts", []): + try: + self._apply_upsert(doctype_name, payload) + total_upserted += 1 + except Exception as e: + total_errors += 1 + frappe.log_error( + f"Apply {doctype_name}/{payload.get('name')}: {e}", + "MastersPuller", + ) + + # Apply tombstones + for tomb in data.get("tombstones", []): + try: + self._apply_tombstone(doctype_name, tomb["reference_name"]) + total_deleted += 1 + except Exception as e: + total_errors += 1 + + # Advance watermark + next_since = data.get("next_since") + if next_since: + from pos_next.pos_next.doctype.sync_watermark.sync_watermark import SyncWatermark + SyncWatermark.upsert( + doctype_name, next_since, + records_pulled=total_upserted, + ) + frappe.db.commit() + current_since = next_since + + if not data.get("has_more"): + break + + return total_upserted, total_deleted, total_errors + + def _apply_upsert(self, doctype_name, payload): + """Apply a single upsert via the adapter.""" + from pos_next.sync import registry + from pos_next.pos_next.doctype.sync_record_state.sync_record_state import SyncRecordState + + adapter = registry.get_adapter(doctype_name) + + # Check hash — skip if unchanged + payload_hash = compute_hash(payload) + existing_hash = SyncRecordState.get_hash(doctype_name, payload.get("name", "")) + if existing_hash == payload_hash: + return # No change + + if adapter: + adapter.validate_incoming(payload) + adapter.apply_incoming(payload, "update") + else: + # No adapter — use default BaseSyncAdapter behavior + from pos_next.sync.adapters.base import BaseSyncAdapter + default = BaseSyncAdapter() + default.doctype = doctype_name + default.apply_incoming(payload, "update") + + # Record state + SyncRecordState.upsert(doctype_name, payload.get("name", ""), payload_hash, "central") + frappe.db.commit() + + def _apply_tombstone(self, doctype_name, reference_name): + """Delete a local record that was deleted on central.""" + if frappe.db.exists(doctype_name, reference_name): + frappe.delete_doc(doctype_name, reference_name, ignore_permissions=True, force=True) + # Remove record state + state_name = frappe.db.get_value( + "Sync Record State", + {"reference_doctype": doctype_name, "reference_name": reference_name}, + "name", + ) + if state_name: + frappe.delete_doc("Sync Record State", state_name, ignore_permissions=True, force=True) + frappe.db.commit() + + +def _log(operation, status, duration_ms=0, records_touched=0, error=None, context=None): + """Write a Sync Log entry.""" + try: + from pos_next.pos_next.doctype.sync_log.sync_log import SyncLog + SyncLog.record( + operation=operation, + status=status, + duration_ms=duration_ms, + records_touched=records_touched, + error=error, + context=context, + ) + frappe.db.commit() + except Exception: + pass # Don't let logging failure crash the puller +``` + +- [ ] **Step 3: Run tests to verify they pass** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-central execute pos_next.sync.tests.test_masters_puller.run_all +``` + +Expected: all 4 tests PASS. + +- [ ] **Step 4: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/masters_puller.py pos_next/sync/tests/test_masters_puller.py +git commit -m "feat(sync): add MastersPuller engine for branch-side masters pull + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 8: Add tombstone hooks + scheduler to `hooks.py` + +**Files:** +- Create: `pos_next/sync/hooks.py` +- Modify: `pos_next/hooks.py` + +- [ ] **Step 1: Create `pos_next/sync/hooks.py`** + +File: `pos_next/sync/hooks.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Sync doc_event hooks — tombstone recording on master deletion.""" + +import frappe + + +def write_tombstone_on_trash(doc, method=None): + """ + on_trash hook for synced master DocTypes. + Records a tombstone so branches can replay the delete. + """ + from pos_next.pos_next.doctype.sync_tombstone.sync_tombstone import SyncTombstone + try: + SyncTombstone.record(doc.doctype, doc.name) + frappe.db.commit() + except Exception: + # Don't block the delete if tombstone creation fails + frappe.log_error(f"Tombstone write failed for {doc.doctype}/{doc.name}", "Sync Hooks") +``` + +- [ ] **Step 2: Add `on_trash` hooks and scheduler to `pos_next/hooks.py`** + +Read `pos_next/hooks.py` first. Then: + +1. Add `on_trash` hook for synced master DocTypes that don't already have one. +2. Add `cron` section to `scheduler_events`. + +In `doc_events`, add `on_trash` for these DocTypes: Item, Item Price, Item Group, Item Barcode, UOM, Price List, POS Profile, Warehouse, Mode of Payment, Company, Currency, Branch, Customer Group, Sales Person, Employee, User, Role Profile, Sales Taxes and Charges Template, Item Tax Template, POS Settings, POS Offer, POS Coupon, Loyalty Program. + +For DocTypes already in `doc_events` (like Item, Customer), add `on_trash` to the existing entry. For new ones, add a new entry. + +The hook path is: `"pos_next.sync.hooks.write_tombstone_on_trash"` + +In `scheduler_events`, add: +```python +"cron": { + "* * * * *": [ + "pos_next.sync.masters_puller.pull_if_due", + ] +}, +``` + +- [ ] **Step 3: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/hooks.py pos_next/hooks.py +git commit -m "feat(sync): add tombstone on_trash hooks + masters pull scheduler + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 9: Plan 2 test runner + full integration test + +**Files:** +- Create: `pos_next/sync/tests/run_plan2_tests.py` + +- [ ] **Step 1: Create the runner** + +File: `pos_next/sync/tests/run_plan2_tests.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Run every Plan 2 test module and report PASS/FAIL counts.""" + +import traceback + + +TEST_MODULES = [ + "pos_next.sync.tests.test_changes_api", + "pos_next.sync.tests.test_generic_adapter", + "pos_next.sync.tests.test_item_adapter", + "pos_next.sync.tests.test_item_price_adapter", + "pos_next.sync.tests.test_customer_adapter", + "pos_next.sync.tests.test_masters_puller", +] + + +def run(): + passed = 0 + failed = 0 + for mod_name in TEST_MODULES: + print(f"\n=== {mod_name} ===") + try: + mod = __import__(mod_name, fromlist=["run_all"]) + mod.run_all() + passed += 1 + except Exception: + failed += 1 + print(f"FAILED: {mod_name}") + traceback.print_exc() + print(f"\n\n=== PLAN 2 SUMMARY: {passed} passed, {failed} failed ===") + if failed: + raise SystemExit(1) +``` + +- [ ] **Step 2: Run the full Plan 2 test suite** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-central execute pos_next.sync.tests.run_plan2_tests.run +``` + +Expected: `=== PLAN 2 SUMMARY: 6 passed, 0 failed ===` + +- [ ] **Step 3: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/tests/run_plan2_tests.py +git commit -m "test(sync): add Plan 2 test runner + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 10: Cross-bench integration test — end-to-end masters pull + +**Files:** +- Create: `pos_next/sync/tests/_test_e2e_masters_pull.py` + +- [ ] **Step 1: Create the integration test** + +File: `pos_next/sync/tests/_test_e2e_masters_pull.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +""" +End-to-end integration test: create Item on central → pull on branch → verify. + +Run from the BRANCH site (dev.pos on frappe-bench-16): + bench --site dev.pos execute pos_next.sync.tests._test_e2e_masters_pull.run_all + +Prerequisites: + - Both benches running (port 8000 central, port 8001 branch) + - Sync Site Config configured on both (use _setup_multi_site helpers) + - Adapters imported (generic_master, item, etc.) +""" + +import frappe +from pos_next.sync.transport import build_session_from_config +from pos_next.sync.masters_puller import MastersPuller + + +def test_pull_items_from_central(): + """Pull Items from central and verify they arrive.""" + session = build_session_from_config() + + # First, check how many Items we have locally + local_count_before = frappe.db.count("Item") + + puller = MastersPuller(session) + + # Pull just Items + watermark = "2000-01-01 00:00:00" + upserted, deleted, errors = puller._pull_one_doctype("Item", watermark, 50) + + print(f"Pulled: upserted={upserted}, deleted={deleted}, errors={errors}") + assert errors == 0 or upserted > 0, "Expected some items to sync or no errors" + + local_count_after = frappe.db.count("Item") + print(f"Items before={local_count_before}, after={local_count_after}") + + session.logout() + print("PASS: test_pull_items_from_central") + + +def test_pull_creates_watermark(): + """After pulling, a Sync Watermark record exists for the DocType.""" + from pos_next.pos_next.doctype.sync_watermark.sync_watermark import SyncWatermark + + wm = SyncWatermark.get_for("Item") + if wm: + print(f"Watermark for Item: last_modified={wm.last_modified}, records_pulled={wm.records_pulled}") + assert wm.last_modified is not None + print("PASS: test_pull_creates_watermark") + else: + print("SKIP: test_pull_creates_watermark (no watermark — pull may have returned empty)") + + +def run_all(): + # Import adapters to register them + import pos_next.sync.adapters.item + import pos_next.sync.adapters.item_price + import pos_next.sync.adapters.customer + import pos_next.sync.adapters.generic_master + + test_pull_items_from_central() + test_pull_creates_watermark() + print("\nAll E2E Masters Pull tests PASSED") +``` + +- [ ] **Step 2: Push to remote and pull on bench-16** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/tests/_test_e2e_masters_pull.py +git commit -m "test(sync): add end-to-end masters pull integration test + +Co-Authored-By: Claude Opus 4.6 (1M context) " +git push community feat/sync-foundation +``` + +Then on bench-16: +```bash +cd /home/ubuntu/frappe-bench-16/apps/pos_next +git pull origin feat/sync-foundation +bench --site dev.pos migrate +``` + +- [ ] **Step 3: Run the integration test from branch** + +```bash +cd /home/ubuntu/frappe-bench-16 +bench --site dev.pos execute pos_next.sync.tests._test_e2e_masters_pull.run_all +``` + +Expected: Items pulled from central, watermark created. + +--- + +## Done — What Plan 2 Delivers + +After completing all 10 tasks: + +- **Central exposes `changes_since` + `health` API endpoints.** +- **Branch runs `MastersPuller`** on a cron schedule, pulling all Central→Branch DocTypes. +- **4 adapter types:** ItemAdapter (child tables + variant protection), ItemPriceAdapter (composite key), CustomerAdapter (mobile_no dedup), GenericMasterAdapter (~20 simple masters). +- **Tombstone hooks** on central record deletions for branch replay. +- **Scheduler integration** — `pull_if_due` runs every minute, self-throttled. +- **Watermark tracking** — per-DocType pull progress, survives restarts. +- **Hash-based skip** — unchanged records are not re-applied. +- **Sync Log** — every pull cycle logged. +- **6 test modules, all passing + 1 cross-bench integration test.** + +## Self-Review Checklist + +Before considering Plan 2 complete, verify: + +- [ ] All 10 tasks committed. +- [ ] `bench --site pos-central execute pos_next.sync.tests.run_plan2_tests.run` reports 0 failures. +- [ ] `bench --site pos-central execute pos_next.sync.tests.run_all_tests.run` still reports 0 failures (Plan 1 tests). +- [ ] Cross-bench integration test passes from bench-16. +- [ ] `bench --site pos-central migrate` runs clean. +- [ ] Create an Item on pos-central → manually trigger pull on dev.pos → Item appears. diff --git a/docs/superpowers/plans/2026-04-06-transactions-push-plan-3.md b/docs/superpowers/plans/2026-04-06-transactions-push-plan-3.md new file mode 100644 index 00000000..b61bf86c --- /dev/null +++ b/docs/superpowers/plans/2026-04-06-transactions-push-plan-3.md @@ -0,0 +1,1363 @@ +# Transactions Push — Implementation Plan (Plan 3 of 3) + +> **For agentic workers:** REQUIRED SUB-SKILL: Use superpowers:subagent-driven-development (recommended) or superpowers:executing-plans to implement this plan task-by-task. Steps use checkbox (`- [ ]`) syntax for tracking. + +**Goal:** Implement branch → central transaction push via the Outbox: capture transaction events, drain to central, apply as read-only replicas. + +**Architecture:** Transaction doc_events (submit/cancel/update) enqueue payloads into the Sync Outbox (Plan 1). An `OutboxDrainer` scheduled job batches pending rows by DocType and POSTs to central's ingest API. Central applies via `SubmittableAdapter` subclasses that handle docstatus-aware insert (no re-submission). Exponential backoff on failure, dead letter after 10 attempts. + +**Tech Stack:** Frappe Framework (Python 3.10+/3.14), Frappe ORM, `requests` for HTTP, `bench execute` for tests. + +**Spec:** `docs/superpowers/specs/2026-04-06-transactions-push-design.md` + +**Prerequisites:** +- Plan 1 + Plan 2 complete (all tests passing). +- Two-bench dev environment running. +- Use `bench --site pos-dev execute ...` for adapter tests (pos-dev has ERPNext data). +- Use tabs for indentation. NEVER `bench run-tests`. + +--- + +## File Structure + +### New files + +| File | Responsibility | +|------|----------------| +| `pos_next/sync/adapters/submittable.py` | `SubmittableAdapter` base — docstatus-aware insert/cancel for submitted docs | +| `pos_next/sync/adapters/sales_invoice.py` | Sales Invoice adapter — naming validation, child tables | +| `pos_next/sync/adapters/payment_entry.py` | Payment Entry adapter | +| `pos_next/sync/adapters/pos_opening_shift.py` | POS Opening Shift adapter (priority 10) | +| `pos_next/sync/adapters/pos_closing_shift.py` | POS Closing Shift adapter (priority 20) | +| `pos_next/sync/adapters/stock_ledger_entry.py` | SLE adapter — insert-only | +| `pos_next/sync/hooks_outbox.py` | Outbox hooks — enqueue on submit/cancel/update | +| `pos_next/sync/outbox_drainer.py` | `OutboxDrainer` + `push_if_due` entry point | +| `pos_next/sync/api/ingest.py` | Central ingest endpoint | +| `pos_next/sync/tests/test_hooks_outbox.py` | Tests for outbox hooks | +| `pos_next/sync/tests/test_outbox_drainer.py` | Tests for OutboxDrainer | +| `pos_next/sync/tests/test_ingest_api.py` | Tests for ingest endpoint | +| `pos_next/sync/tests/test_submittable_adapter.py` | Tests for SubmittableAdapter | +| `pos_next/sync/tests/run_plan3_tests.py` | Plan 3 test runner | +| `pos_next/sync/tests/_test_e2e_push.py` | Cross-bench integration test | + +### Modified files + +| File | What changes | +|------|--------------| +| `pos_next/hooks.py` | Add outbox `doc_events` for transaction DocTypes, add `push_if_due` to cron | + +--- + +## Tasks + +### Task 1: Create `SubmittableAdapter` base class + +**Files:** +- Create: `pos_next/sync/adapters/submittable.py` +- Create: `pos_next/sync/tests/test_submittable_adapter.py` + +- [ ] **Step 1: Write failing tests** + +File: `pos_next/sync/tests/test_submittable_adapter.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + + +def test_submittable_adapter_interface(): + """SubmittableAdapter has apply_incoming that handles docstatus.""" + from pos_next.sync.adapters.submittable import SubmittableAdapter + assert hasattr(SubmittableAdapter, "apply_incoming") + assert hasattr(SubmittableAdapter, "doctype") + print("PASS: test_submittable_adapter_interface") + + +def test_submittable_adapter_is_base_adapter(): + """SubmittableAdapter inherits from BaseSyncAdapter.""" + from pos_next.sync.adapters.submittable import SubmittableAdapter + from pos_next.sync.adapters.base import BaseSyncAdapter + assert issubclass(SubmittableAdapter, BaseSyncAdapter) + print("PASS: test_submittable_adapter_is_base_adapter") + + +def run_all(): + test_submittable_adapter_interface() + test_submittable_adapter_is_base_adapter() + print("\nAll SubmittableAdapter tests PASSED") +``` + +- [ ] **Step 2: Create `submittable.py`** + +File: `pos_next/sync/adapters/submittable.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Base adapter for submitted documents — docstatus-aware insert/cancel.""" + +import frappe +from pos_next.sync.adapters.base import BaseSyncAdapter, SKIP_ON_UPSERT, _set_sync_flags + + +class SubmittableAdapter(BaseSyncAdapter): + """ + Adapter for DocTypes that use docstatus (submit/cancel workflow). + + On central, submitted docs are inserted as read-only replicas + with docstatus already set — no doc.submit() is called. + Cancel sets docstatus=2 via db_update — no doc.cancel() is called. + """ + + def apply_incoming(self, payload, operation): + name = payload.get("name") + if not name: + raise ValueError(f"{self.doctype}: payload missing 'name' field") + + if operation == "delete": + if frappe.db.exists(self.doctype, name): + frappe.delete_doc(self.doctype, name, ignore_permissions=True, force=True) + return name + + if operation == "cancel": + if frappe.db.exists(self.doctype, name): + doc = frappe.get_doc(self.doctype, name) + doc.docstatus = 2 + doc.db_update() + return name + + payload = self.pre_apply_transform(payload) + + try: + doc = frappe.get_doc(self.doctype, name) + for key, val in payload.items(): + if key not in SKIP_ON_UPSERT and not isinstance(val, list): + doc.set(key, val) + doc.db_update() + except frappe.DoesNotExistError: + doc = frappe.get_doc({"doctype": self.doctype, **payload}) + _set_sync_flags(doc) + doc.insert(ignore_permissions=True) + return doc.name +``` + +- [ ] **Step 3: Run tests** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-dev execute pos_next.sync.tests.test_submittable_adapter.run_all +``` + +- [ ] **Step 4: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/adapters/submittable.py pos_next/sync/tests/test_submittable_adapter.py +git commit -m "feat(sync): add SubmittableAdapter base for docstatus-aware sync + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 2: Create transaction adapters (Sales Invoice, Payment Entry, POS Shifts, SLE) + +**Files:** +- Create: `pos_next/sync/adapters/sales_invoice.py` +- Create: `pos_next/sync/adapters/payment_entry.py` +- Create: `pos_next/sync/adapters/pos_opening_shift.py` +- Create: `pos_next/sync/adapters/pos_closing_shift.py` +- Create: `pos_next/sync/adapters/stock_ledger_entry.py` + +- [ ] **Step 1: Create all 5 adapter files** + +File: `pos_next/sync/adapters/sales_invoice.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for Sales Invoice — naming series validation, child tables.""" + +import frappe +from pos_next.sync.adapters.submittable import SubmittableAdapter +from pos_next.sync.payload import strip_meta +from pos_next.sync.exceptions import SyncValidationError +from pos_next.sync import registry + + +class SalesInvoiceAdapter(SubmittableAdapter): + doctype = "Sales Invoice" + + def validate_incoming(self, payload): + origin_branch = payload.get("origin_branch") + if not origin_branch: + frappe.log_error( + f"Sales Invoice {payload.get('name')} missing origin_branch", + "Sync Sales Invoice Adapter", + ) + return + + # Validate naming series matches the origin branch code. + # Branch POS Profiles use branch-coded naming series (e.g. SINV-CAI-.#####). + name = payload.get("name", "") + naming_series = payload.get("naming_series", "") + if naming_series and origin_branch not in naming_series: + raise SyncValidationError( + f"Sales Invoice {name}: naming series '{naming_series}' " + f"does not contain origin branch code '{origin_branch}'" + ) + + def pre_apply_transform(self, payload): + cleaned = strip_meta(payload) + for key, val in cleaned.items(): + if isinstance(val, list): + cleaned[key] = [strip_meta(row) if isinstance(row, dict) else row for row in val] + return cleaned + + +registry.register(SalesInvoiceAdapter) +``` + +**Naming series convention:** Each branch's POS Profile carries a naming series that encodes the branch code (e.g., `SINV-CAI-.#####` for Cairo Downtown). When a Sales Invoice is pushed to central, `validate_incoming` verifies the naming series matches the `origin_branch` field. This prevents cross-branch naming collisions and ensures traceability. + +File: `pos_next/sync/adapters/payment_entry.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for Payment Entry.""" + +from pos_next.sync.adapters.submittable import SubmittableAdapter +from pos_next.sync.payload import strip_meta +from pos_next.sync import registry + + +class PaymentEntryAdapter(SubmittableAdapter): + doctype = "Payment Entry" + + def pre_apply_transform(self, payload): + cleaned = strip_meta(payload) + for key, val in cleaned.items(): + if isinstance(val, list): + cleaned[key] = [strip_meta(row) if isinstance(row, dict) else row for row in val] + return cleaned + + +registry.register(PaymentEntryAdapter) +``` + +File: `pos_next/sync/adapters/pos_opening_shift.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for POS Opening Shift — priority 10, synced first.""" + +from pos_next.sync.adapters.submittable import SubmittableAdapter +from pos_next.sync import registry + + +class POSOpeningShiftAdapter(SubmittableAdapter): + doctype = "POS Opening Shift" + + +registry.register(POSOpeningShiftAdapter) +``` + +File: `pos_next/sync/adapters/pos_closing_shift.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for POS Closing Shift — priority 20.""" + +from pos_next.sync.adapters.submittable import SubmittableAdapter +from pos_next.sync import registry + + +class POSClosingShiftAdapter(SubmittableAdapter): + doctype = "POS Closing Shift" + + +registry.register(POSClosingShiftAdapter) +``` + +File: `pos_next/sync/adapters/stock_ledger_entry.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for Stock Ledger Entry — insert-only, no updates.""" + +import frappe +from pos_next.sync.adapters.base import BaseSyncAdapter, _set_sync_flags +from pos_next.sync import registry + + +class StockLedgerEntryAdapter(BaseSyncAdapter): + doctype = "Stock Ledger Entry" + + def apply_incoming(self, payload, operation): + """Insert-only: SLEs are never updated after creation.""" + name = payload.get("name") + if not name: + raise ValueError("SLE payload missing 'name'") + + if operation == "delete": + if frappe.db.exists(self.doctype, name): + frappe.delete_doc(self.doctype, name, ignore_permissions=True, force=True) + return name + + # Skip if already exists (insert-only) + if frappe.db.exists(self.doctype, name): + return name + + payload = self.pre_apply_transform(payload) + doc = frappe.get_doc({"doctype": self.doctype, **payload}) + _set_sync_flags(doc) + doc.insert(ignore_permissions=True) + return doc.name + + +registry.register(StockLedgerEntryAdapter) +``` + +- [ ] **Step 2: Verify adapters are auto-discovered** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-dev execute 'from pos_next.sync.masters_puller import _ensure_adapters_loaded; _ensure_adapters_loaded(); from pos_next.sync import registry; registered = registry.list_registered(); print(f"Registered: {len(registered)}"); [print(f" {r}") for r in sorted(registered) if r in ("Sales Invoice","Payment Entry","POS Opening Shift","POS Closing Shift","Stock Ledger Entry")]' +``` + +Expected: all 5 new adapters listed. + +- [ ] **Step 3: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/adapters/sales_invoice.py pos_next/sync/adapters/payment_entry.py pos_next/sync/adapters/pos_opening_shift.py pos_next/sync/adapters/pos_closing_shift.py pos_next/sync/adapters/stock_ledger_entry.py +git commit -m "feat(sync): add transaction adapters (Sales Invoice, Payment Entry, POS shifts, SLE) + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 3: Create outbox hooks — capture transaction events + +**Files:** +- Create: `pos_next/sync/hooks_outbox.py` +- Create: `pos_next/sync/tests/test_hooks_outbox.py` + +- [ ] **Step 1: Write failing tests** + +File: `pos_next/sync/tests/test_hooks_outbox.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +import json + + +def _cleanup(): + frappe.db.delete("Sync Outbox") + frappe.db.commit() + + +def test_method_to_operation(): + """Maps Frappe doc_event method names to outbox operations.""" + from pos_next.sync.hooks_outbox import _method_to_operation + assert _method_to_operation("on_submit") == "submit" + assert _method_to_operation("on_cancel") == "cancel" + assert _method_to_operation("on_update") == "update" + assert _method_to_operation("on_update_after_submit") == "update" + assert _method_to_operation("after_insert") == "insert" + assert _method_to_operation("on_trash") == "delete" + print("PASS: test_method_to_operation") + + +def test_enqueue_guard_skips_on_central(): + """On a site with no Branch config, enqueue is a no-op.""" + from pos_next.sync.hooks_outbox import _is_branch_site + # pos-dev has a Branch config so this may return True + # Just verify the function exists and returns a bool + result = _is_branch_site() + assert isinstance(result, bool) + print("PASS: test_enqueue_guard_skips_on_central") + + +def test_enqueue_creates_outbox_row(): + """enqueue_to_outbox creates a Sync Outbox row.""" + _cleanup() + try: + from pos_next.sync.hooks_outbox import enqueue_to_outbox + from unittest.mock import MagicMock + + # Create a fake doc + doc = MagicMock() + doc.doctype = "Sales Invoice" + doc.name = "TEST-SINV-001" + doc.as_dict.return_value = {"name": "TEST-SINV-001", "total": 100} + + enqueue_to_outbox(doc, method="on_submit") + + count = frappe.db.count("Sync Outbox", {"reference_doctype": "Sales Invoice", "reference_name": "TEST-SINV-001"}) + assert count == 1, f"Expected 1 outbox row, got {count}" + + row = frappe.get_all( + "Sync Outbox", + filters={"reference_name": "TEST-SINV-001"}, + fields=["operation", "sync_status"], + )[0] + assert row.operation == "submit" + assert row.sync_status == "pending" + print("PASS: test_enqueue_creates_outbox_row") + finally: + _cleanup() + + +def run_all(): + test_method_to_operation() + test_enqueue_guard_skips_on_central() + test_enqueue_creates_outbox_row() + print("\nAll Outbox Hooks tests PASSED") +``` + +- [ ] **Step 2: Create `hooks_outbox.py`** + +File: `pos_next/sync/hooks_outbox.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Outbox hooks — capture transaction doc_events into Sync Outbox.""" + +import json + +import frappe + +from pos_next.sync.payload import to_payload + + +_METHOD_MAP = { + "on_submit": "submit", + "on_cancel": "cancel", + "on_update": "update", + "on_update_after_submit": "update", + "after_insert": "insert", + "on_trash": "delete", +} + + +def _method_to_operation(method): + """Convert Frappe doc_event method name to outbox operation.""" + return _METHOD_MAP.get(method, "update") + + +def _is_branch_site(): + """Check if this site has an enabled Branch Sync Site Config.""" + cache_key = "pos_next_is_branch" + result = frappe.cache().get_value(cache_key) + if result is None: + result = bool(frappe.db.get_value( + "Sync Site Config", {"site_role": "Branch", "enabled": 1}, "name" + )) + frappe.cache().set_value(cache_key, result, expires_in_sec=300) + return result + + +def _get_priority(doctype_name): + """Get sync priority for a DocType from cache or registry.""" + cache_key = f"pos_next_sync_priority_{doctype_name}" + prio = frappe.cache().get_value(cache_key) + if prio is None: + prio = frappe.db.get_value( + "Sync DocType Rule", + {"doctype_name": doctype_name, "parenttype": "Sync Site Config"}, + "priority", + ) or 100 + frappe.cache().set_value(cache_key, int(prio), expires_in_sec=300) + return int(prio) + + +def enqueue_to_outbox(doc, method=None): + """ + Generic doc_event hook: capture document change into Sync Outbox. + Only fires on Branch sites with sync enabled. + """ + if not _is_branch_site(): + return + + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + + operation = _method_to_operation(method) + payload = json.dumps(to_payload(doc), default=str) + priority = _get_priority(doc.doctype) + + SyncOutbox.enqueue( + reference_doctype=doc.doctype, + reference_name=doc.name, + operation=operation, + payload=payload, + priority=priority, + ) +``` + +- [ ] **Step 3: Run tests** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-dev execute pos_next.sync.tests.test_hooks_outbox.run_all +``` + +- [ ] **Step 4: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/hooks_outbox.py pos_next/sync/tests/test_hooks_outbox.py +git commit -m "feat(sync): add outbox hooks for transaction event capture + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 4: Create central ingest API + +**Files:** +- Create: `pos_next/sync/api/ingest.py` +- Create: `pos_next/sync/tests/test_ingest_api.py` + +- [ ] **Step 1: Write failing tests** + +File: `pos_next/sync/tests/test_ingest_api.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +import json + + +def _cleanup(): + frappe.db.delete("Sync Record State") + frappe.db.commit() + + +def test_ingest_returns_results(): + """Ingest endpoint returns per-record results.""" + from pos_next.sync.api.ingest import ingest + + # Import adapters for registration + from pos_next.sync.masters_puller import _ensure_adapters_loaded + _ensure_adapters_loaded() + + result = ingest( + doctype="Warehouse", + branch_code="CAI", + records=json.dumps([ + {"operation": "update", "payload": {"name": "FAKE-WH-INGEST", "warehouse_name": "Test"}}, + ]), + ) + assert "results" in result + assert len(result["results"]) == 1 + # May be ok or error depending on site data — just verify structure + assert "name" in result["results"][0] + assert "status" in result["results"][0] + print("PASS: test_ingest_returns_results") + + +def test_ingest_idempotent_by_sync_uuid(): + """Records with existing sync_uuid are skipped.""" + _cleanup() + try: + from pos_next.sync.api.ingest import ingest + from pos_next.sync.masters_puller import _ensure_adapters_loaded + _ensure_adapters_loaded() + + uuid_val = "test-uuid-idempotent-001" + records = json.dumps([ + {"operation": "update", "payload": {"name": "FAKE-IDEMP", "sync_uuid": uuid_val}}, + ]) + + # First call + result1 = ingest(doctype="Warehouse", branch_code="CAI", records=records) + # Second call — should skip + result2 = ingest(doctype="Warehouse", branch_code="CAI", records=records) + # Both should succeed (first applies, second skips as idempotent) + assert result2["results"][0]["status"] == "skipped" + print("PASS: test_ingest_idempotent_by_sync_uuid") + finally: + _cleanup() + + +def test_ingest_empty_records(): + """Empty records list returns empty results.""" + from pos_next.sync.api.ingest import ingest + result = ingest(doctype="Warehouse", branch_code="CAI", records=json.dumps([])) + assert result["results"] == [] + print("PASS: test_ingest_empty_records") + + +def run_all(): + test_ingest_returns_results() + test_ingest_idempotent_by_sync_uuid() + test_ingest_empty_records() + print("\nAll Ingest API tests PASSED") +``` + +- [ ] **Step 2: Create `ingest.py`** + +File: `pos_next/sync/api/ingest.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Central-side API: receive and apply pushed transactions from branches.""" + +import json + +import frappe + +from pos_next.sync import registry +from pos_next.sync.adapters.base import BaseSyncAdapter +from pos_next.sync.payload import compute_hash +from pos_next.sync.masters_puller import _ensure_adapters_loaded +from pos_next.pos_next.doctype.sync_record_state.sync_record_state import SyncRecordState + + +@frappe.whitelist() +def ingest(doctype, branch_code, records): + """ + Receive a batch of records pushed from a branch. + + Args: + doctype: The DocType being pushed + branch_code: The branch_code of the pushing site + records: JSON string of [{operation, payload}, ...] + + Returns: {"results": [{name, sync_uuid, status, error?}, ...]} + """ + _ensure_adapters_loaded() + + if isinstance(records, str): + records = json.loads(records) + + adapter = registry.get_adapter(doctype) + if not adapter: + adapter = BaseSyncAdapter() + adapter.doctype = doctype + + results = [] + for record in records: + operation = record.get("operation", "update") + payload = record.get("payload", {}) + name = payload.get("name", "") + sync_uuid = payload.get("sync_uuid", "") + + try: + # Idempotency: skip if sync_uuid already exists locally + if sync_uuid and frappe.db.exists(doctype, {"sync_uuid": sync_uuid}): + results.append({"name": name, "sync_uuid": sync_uuid, "status": "skipped"}) + continue + + adapter.validate_incoming(payload) + adapter.apply_incoming(payload, operation) + + # Record state + payload_hash = compute_hash(payload) + SyncRecordState.upsert(doctype, name, payload_hash, branch_code) + + results.append({"name": name, "sync_uuid": sync_uuid, "status": "ok"}) + except Exception as e: + frappe.log_error(f"Ingest {doctype}/{name}: {e}", "Sync Ingest") + results.append({"name": name, "sync_uuid": sync_uuid, "status": "error", "error": str(e)[:500]}) + + frappe.db.commit() + return {"results": results} +``` + +- [ ] **Step 3: Run tests** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-dev execute pos_next.sync.tests.test_ingest_api.run_all +``` + +- [ ] **Step 4: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/api/ingest.py pos_next/sync/tests/test_ingest_api.py +git commit -m "feat(sync): add central ingest API for transaction push + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 5: Create `OutboxDrainer` — push engine + +**Files:** +- Create: `pos_next/sync/outbox_drainer.py` +- Create: `pos_next/sync/tests/test_outbox_drainer.py` + +- [ ] **Step 1: Write failing tests** + +File: `pos_next/sync/tests/test_outbox_drainer.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +import json +from unittest.mock import MagicMock + + +def _cleanup(): + frappe.db.delete("Sync Outbox") + frappe.db.delete("Sync Dead Letter") + frappe.db.commit() + + +def test_push_if_due_noop_on_central(): + """push_if_due does nothing when no Branch config exists.""" + from pos_next.sync.outbox_drainer import push_if_due + push_if_due() + print("PASS: test_push_if_due_noop_on_central") + + +def test_drainer_processes_pending_rows(): + """OutboxDrainer sends pending outbox rows to central.""" + _cleanup() + try: + from pos_next.sync.outbox_drainer import OutboxDrainer + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + + # Create a pending outbox row + SyncOutbox.enqueue( + reference_doctype="Sales Invoice", + reference_name="TEST-SINV-DRAIN", + operation="submit", + payload='{"name":"TEST-SINV-DRAIN","docstatus":1}', + priority=50, + ) + + # Mock session — central returns ok + fake_session = MagicMock() + fake_resp = MagicMock() + fake_resp.status_code = 200 + fake_resp.json.return_value = { + "message": { + "results": [{"name": "TEST-SINV-DRAIN", "sync_uuid": "", "status": "ok"}] + } + } + fake_session.post.return_value = fake_resp + + drainer = OutboxDrainer(fake_session, branch_code="CAI") + acked, failed, dead = drainer.drain() + + assert acked >= 1, f"Expected at least 1 acked, got {acked}" + # Verify outbox row is now acked + status = frappe.db.get_value( + "Sync Outbox", + {"reference_name": "TEST-SINV-DRAIN"}, + "sync_status", + ) + assert status == "acked", f"Expected acked, got {status}" + print("PASS: test_drainer_processes_pending_rows") + finally: + _cleanup() + + +def test_drainer_handles_failure(): + """On failure, outbox row gets attempts incremented and backoff set.""" + _cleanup() + try: + from pos_next.sync.outbox_drainer import OutboxDrainer + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + + SyncOutbox.enqueue( + reference_doctype="Sales Invoice", + reference_name="TEST-SINV-FAIL", + operation="submit", + payload='{"name":"TEST-SINV-FAIL"}', + priority=50, + ) + + # Mock session — central returns error + fake_session = MagicMock() + fake_resp = MagicMock() + fake_resp.status_code = 200 + fake_resp.json.return_value = { + "message": { + "results": [{"name": "TEST-SINV-FAIL", "sync_uuid": "", "status": "error", "error": "test error"}] + } + } + fake_session.post.return_value = fake_resp + + drainer = OutboxDrainer(fake_session, branch_code="CAI") + acked, failed, dead = drainer.drain() + + assert failed >= 1 + row = frappe.get_all( + "Sync Outbox", + filters={"reference_name": "TEST-SINV-FAIL"}, + fields=["sync_status", "attempts", "last_error"], + )[0] + assert row.sync_status == "failed" + assert row.attempts == 1 + assert "test error" in (row.last_error or "") + print("PASS: test_drainer_handles_failure") + finally: + _cleanup() + + +def test_drainer_dead_letters_after_max_attempts(): + """After MAX_ATTEMPTS_BEFORE_DEAD, row moves to dead letter.""" + _cleanup() + try: + from pos_next.sync.outbox_drainer import OutboxDrainer + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + from pos_next.sync.defaults import MAX_ATTEMPTS_BEFORE_DEAD + + row = SyncOutbox.enqueue( + reference_doctype="Sales Invoice", + reference_name="TEST-SINV-DEAD", + operation="submit", + payload='{"name":"TEST-SINV-DEAD"}', + priority=50, + ) + # Set attempts to just below threshold + frappe.db.set_value("Sync Outbox", row.name, { + "attempts": MAX_ATTEMPTS_BEFORE_DEAD, + "sync_status": "failed", + }) + frappe.db.commit() + + # Mock session — central returns error again + fake_session = MagicMock() + fake_resp = MagicMock() + fake_resp.status_code = 200 + fake_resp.json.return_value = { + "message": { + "results": [{"name": "TEST-SINV-DEAD", "sync_uuid": "", "status": "error", "error": "persistent error"}] + } + } + fake_session.post.return_value = fake_resp + + drainer = OutboxDrainer(fake_session, branch_code="CAI") + acked, failed, dead = drainer.drain() + + assert dead >= 1 + # Verify outbox row is gone + assert not frappe.db.exists("Sync Outbox", {"reference_name": "TEST-SINV-DEAD"}) + # Verify dead letter exists + assert frappe.db.exists("Sync Dead Letter", {"reference_name": "TEST-SINV-DEAD"}) + print("PASS: test_drainer_dead_letters_after_max_attempts") + finally: + _cleanup() + frappe.db.delete("Sync Dead Letter") + frappe.db.commit() + + +def run_all(): + test_push_if_due_noop_on_central() + test_drainer_processes_pending_rows() + test_drainer_handles_failure() + test_drainer_dead_letters_after_max_attempts() + print("\nAll OutboxDrainer tests PASSED") +``` + +- [ ] **Step 2: Create `outbox_drainer.py`** + +File: `pos_next/sync/outbox_drainer.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Branch-side outbox drainer — pushes transactions to central.""" + +import json +import time +from datetime import timedelta + +import frappe +from frappe.utils import now_datetime, time_diff_in_seconds + +from pos_next.sync.defaults import ( + DEFAULT_BATCH_SIZE, + DEFAULT_PUSH_INTERVAL_SECONDS, + MAX_ATTEMPTS_BEFORE_DEAD, +) +from pos_next.sync.masters_puller import _ensure_adapters_loaded +from pos_next.pos_next.doctype.sync_log.sync_log import SyncLog + + +def push_if_due(): + """ + Scheduler entry point (called every minute by cron). + Checks if this site is a Branch and if enough time has passed since last push. + """ + cfg_name = frappe.db.get_value("Sync Site Config", {"site_role": "Branch", "enabled": 1}, "name") + if not cfg_name: + return + + cfg = frappe.get_doc("Sync Site Config", cfg_name) + interval = cfg.push_interval_seconds or DEFAULT_PUSH_INTERVAL_SECONDS + + if cfg.last_push_at: + elapsed = time_diff_in_seconds(now_datetime(), cfg.last_push_at) + if elapsed < interval: + return + + _ensure_adapters_loaded() + + try: + from pos_next.sync.transport import build_session_from_config + session = build_session_from_config() + drainer = OutboxDrainer(session, branch_code=cfg.branch_code) + acked, failed, dead = drainer.drain() + + frappe.db.set_value("Sync Site Config", cfg_name, "last_push_at", now_datetime()) + frappe.db.commit() + + _log( + "push_outbox", "success" if (failed + dead) == 0 else "partial", + records_touched=acked + failed + dead, + context={"acked": acked, "failed": failed, "dead": dead}, + ) + except Exception as e: + frappe.db.set_value("Sync Site Config", cfg_name, "last_sync_error", str(e)[:500]) + frappe.db.commit() + _log("push_outbox", "failure", error=str(e)) + + +class OutboxDrainer: + """Drains pending Sync Outbox rows by POSTing to central's ingest API.""" + + def __init__(self, session, branch_code): + self.session = session + self.branch_code = branch_code + + def drain(self): + """ + Process all drainable outbox rows. Returns (acked, failed, dead). + """ + total_acked = 0 + total_failed = 0 + total_dead = 0 + + # Get pending/failed rows ready for retry + rows = frappe.get_all( + "Sync Outbox", + filters={ + "sync_status": ("in", ["pending", "failed"]), + "next_attempt_at": ("is", "not set"), + }, + or_filters={ + "next_attempt_at": ("<=", now_datetime()), + }, + fields=["name", "reference_doctype", "reference_name", "operation", "payload", "attempts"], + order_by="priority asc, creation asc", + limit_page_length=DEFAULT_BATCH_SIZE, + ) + + # Also get failed rows whose next_attempt_at has passed + retry_rows = frappe.get_all( + "Sync Outbox", + filters={ + "sync_status": "failed", + "next_attempt_at": ("<=", now_datetime()), + }, + fields=["name", "reference_doctype", "reference_name", "operation", "payload", "attempts"], + order_by="priority asc, creation asc", + limit_page_length=DEFAULT_BATCH_SIZE, + ) + + # Merge and deduplicate + seen = {r.name for r in rows} + for r in retry_rows: + if r.name not in seen: + rows.append(r) + seen.add(r.name) + + if not rows: + return 0, 0, 0 + + # Group by doctype + by_doctype = {} + for row in rows: + by_doctype.setdefault(row.reference_doctype, []).append(row) + + # Push each doctype batch + for dt, dt_rows in by_doctype.items(): + records = [] + for row in dt_rows: + payload = row.payload + if isinstance(payload, str): + try: + payload = json.loads(payload) + except json.JSONDecodeError: + payload = {} + records.append({ + "operation": row.operation, + "payload": payload, + }) + + try: + resp = self.session.post( + "/api/method/pos_next.sync.api.ingest.ingest", + json={ + "doctype": dt, + "branch_code": self.branch_code, + "records": records, + }, + ) + if resp.status_code != 200: + # Entire batch failed + for row in dt_rows: + self._mark_failed(row, f"HTTP {resp.status_code}") + total_failed += 1 + continue + + results = resp.json().get("message", {}).get("results", []) + # Map results back to rows by index + for i, row in enumerate(dt_rows): + if i < len(results): + result = results[i] + if result.get("status") in ("ok", "skipped"): + self._mark_acked(row) + total_acked += 1 + else: + error = result.get("error", "Unknown error") + if self._should_dead_letter(row): + self._move_to_dead_letter(row, error) + total_dead += 1 + else: + self._mark_failed(row, error) + total_failed += 1 + else: + self._mark_failed(row, "No result from central") + total_failed += 1 + + except Exception as e: + for row in dt_rows: + self._mark_failed(row, str(e)) + total_failed += 1 + + frappe.db.commit() + return total_acked, total_failed, total_dead + + def _mark_acked(self, row): + frappe.db.set_value("Sync Outbox", row.name, { + "sync_status": "acked", + "acked_at": now_datetime(), + }) + + def _mark_failed(self, row, error): + attempts = (row.attempts or 0) + 1 + backoff_seconds = min(2 ** attempts, 3600) # cap at 1 hour + frappe.db.set_value("Sync Outbox", row.name, { + "sync_status": "failed", + "attempts": attempts, + "last_error": str(error)[:500], + "next_attempt_at": now_datetime() + timedelta(seconds=backoff_seconds), + }) + + def _should_dead_letter(self, row): + return (row.attempts or 0) >= MAX_ATTEMPTS_BEFORE_DEAD + + def _move_to_dead_letter(self, row, error): + frappe.get_doc({ + "doctype": "Sync Dead Letter", + "reference_doctype": row.reference_doctype, + "reference_name": row.reference_name, + "operation": row.operation, + "last_error": str(error)[:500], + "attempts": (row.attempts or 0) + 1, + "payload": row.payload, + "moved_at": now_datetime(), + }).insert(ignore_permissions=True) + frappe.delete_doc("Sync Outbox", row.name, ignore_permissions=True, force=True) + + +def _log(operation, status, duration_ms=0, records_touched=0, error=None, context=None): + try: + SyncLog.record( + operation=operation, status=status, duration_ms=duration_ms, + records_touched=records_touched, error=error, context=context, + ) + frappe.db.commit() + except Exception: + pass +``` + +- [ ] **Step 3: Run tests** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-dev execute pos_next.sync.tests.test_outbox_drainer.run_all +``` + +- [ ] **Step 4: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/outbox_drainer.py pos_next/sync/tests/test_outbox_drainer.py +git commit -m "feat(sync): add OutboxDrainer with backoff and dead letter handling + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 6: Wire outbox hooks + push scheduler into `hooks.py` + +**Files:** +- Modify: `pos_next/hooks.py` + +- [ ] **Step 1: Add outbox hooks to doc_events** + +Read `pos_next/hooks.py`. Add `enqueue_to_outbox` hook to transaction DocTypes: + +For `Sales Invoice`, add to existing entry: +```python +"on_submit": [...existing..., "pos_next.sync.hooks_outbox.enqueue_to_outbox"], +"on_cancel": "pos_next.sync.hooks_outbox.enqueue_to_outbox", +"on_update_after_submit": "pos_next.sync.hooks_outbox.enqueue_to_outbox", +``` + +For `Payment Entry`, add: +```python +"on_submit": "pos_next.sync.hooks_outbox.enqueue_to_outbox", +"on_cancel": "pos_next.sync.hooks_outbox.enqueue_to_outbox", +``` + +For `POS Opening Shift` and `POS Closing Shift`, add: +```python +"on_submit": "pos_next.sync.hooks_outbox.enqueue_to_outbox", +``` + +For `Stock Ledger Entry`, add: +```python +"after_insert": "pos_next.sync.hooks_outbox.enqueue_to_outbox", +``` + +For `Customer`, add to existing entry: +```python +"on_update": [...existing..., "pos_next.sync.hooks_outbox.enqueue_to_outbox"], +``` + +- [ ] **Step 2: Add `push_if_due` to cron scheduler** + +In `scheduler_events.cron`, add to the `* * * * *` list: +```python +"pos_next.sync.outbox_drainer.push_if_due", +``` + +- [ ] **Step 3: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/hooks.py +git commit -m "feat(sync): wire outbox hooks + push scheduler into hooks.py + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 7: Plan 3 test runner + +**Files:** +- Create: `pos_next/sync/tests/run_plan3_tests.py` + +- [ ] **Step 1: Create the runner** + +File: `pos_next/sync/tests/run_plan3_tests.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Run every Plan 3 test module and report PASS/FAIL counts.""" + +import traceback + + +TEST_MODULES = [ + "pos_next.sync.tests.test_submittable_adapter", + "pos_next.sync.tests.test_hooks_outbox", + "pos_next.sync.tests.test_ingest_api", + "pos_next.sync.tests.test_outbox_drainer", +] + + +def run(): + passed = 0 + failed = 0 + for mod_name in TEST_MODULES: + print(f"\n=== {mod_name} ===") + try: + mod = __import__(mod_name, fromlist=["run_all"]) + mod.run_all() + passed += 1 + except Exception: + failed += 1 + print(f"FAILED: {mod_name}") + traceback.print_exc() + print(f"\n\n=== PLAN 3 SUMMARY: {passed} passed, {failed} failed ===") + if failed: + raise SystemExit(1) +``` + +- [ ] **Step 2: Run full Plan 3 suite** + +```bash +cd /home/ubuntu/frappe-bench +bench --site pos-dev execute pos_next.sync.tests.run_plan3_tests.run +``` + +Expected: `=== PLAN 3 SUMMARY: 4 passed, 0 failed ===` + +- [ ] **Step 3: Verify Plan 1 + 2 still pass** + +```bash +bench --site pos-dev execute pos_next.sync.tests.run_all_tests.run +bench --site pos-dev execute pos_next.sync.tests.run_plan2_tests.run +``` + +- [ ] **Step 4: Commit** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/tests/run_plan3_tests.py +git commit -m "test(sync): add Plan 3 test runner + +Co-Authored-By: Claude Opus 4.6 (1M context) " +``` + +--- + +### Task 8: Cross-bench e2e push test + +**Files:** +- Create: `pos_next/sync/tests/_test_e2e_push.py` + +- [ ] **Step 1: Create integration test** + +File: `pos_next/sync/tests/_test_e2e_push.py` + +```python +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +""" +E2E: enqueue an outbox row on branch → drain to central → verify on central. + +Run from BRANCH site (dev.pos on frappe-bench-16): + bench --site dev.pos execute pos_next.sync.tests._test_e2e_push.run_all +""" + +import frappe +import json +from pos_next.sync.transport import build_session_from_config +from pos_next.sync.outbox_drainer import OutboxDrainer +from pos_next.sync.masters_puller import _ensure_adapters_loaded + + +def test_push_outbox_to_central(): + """Enqueue a fake outbox row and drain it to central.""" + _ensure_adapters_loaded() + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + + # Clean up any previous test rows + frappe.db.delete("Sync Outbox", {"reference_name": "E2E-PUSH-TEST"}) + frappe.db.commit() + + # Enqueue a test row (using Warehouse since it's simple) + SyncOutbox.enqueue( + reference_doctype="Warehouse", + reference_name="E2E-PUSH-TEST", + operation="update", + payload=json.dumps({"name": "E2E-PUSH-TEST", "warehouse_name": "E2E Push Test WH"}), + priority=50, + ) + + # Drain to central + session = build_session_from_config() + branch_code = frappe.db.get_value("Sync Site Config", {"site_role": "Branch"}, "branch_code") + drainer = OutboxDrainer(session, branch_code=branch_code) + acked, failed, dead = drainer.drain() + + print(f"Drain result: acked={acked}, failed={failed}, dead={dead}") + assert acked >= 1, f"Expected at least 1 acked, got {acked}" + + # Verify outbox row is acked + status = frappe.db.get_value("Sync Outbox", {"reference_name": "E2E-PUSH-TEST"}, "sync_status") + assert status == "acked", f"Expected acked, got {status}" + + session.logout() + print("PASS: test_push_outbox_to_central") + + +def run_all(): + test_push_outbox_to_central() + print("\nAll E2E Push tests PASSED") +``` + +- [ ] **Step 2: Push to remote, pull on bench-16, run** + +```bash +cd /home/ubuntu/frappe-bench/apps/pos_next +git add pos_next/sync/tests/_test_e2e_push.py +git commit -m "test(sync): add e2e push integration test + +Co-Authored-By: Claude Opus 4.6 (1M context) " +git push community feat/sync-foundation +``` + +On bench-16: +```bash +cd /home/ubuntu/frappe-bench-16/apps/pos_next && git pull origin feat/sync-foundation +bench --site dev.pos migrate +bench --site dev.pos execute pos_next.sync.tests._test_e2e_push.run_all +``` + +--- + +## Done — What Plan 3 Delivers + +After completing all 8 tasks: + +- **Outbox hooks** capture `on_submit`/`on_cancel`/`on_update` for Sales Invoice, Payment Entry, POS shifts, SLE, Customer. +- **OutboxDrainer** batches and POSTs pending rows to central every 60 seconds. +- **Central ingest API** applies received records via adapters, with `sync_uuid` idempotency. +- **SubmittableAdapter** base class handles docstatus-aware insert (no re-submission on central). +- **5 transaction adapters** registered: Sales Invoice, Payment Entry, POS Opening/Closing Shift, SLE. +- **Exponential backoff** on failure, **dead letter** after 10 attempts. +- **4 test modules + 1 e2e integration test.** +- Combined with Plan 2: **complete bidirectional sync** for all DocTypes. + +## Self-Review Checklist + +- [ ] All 8 tasks committed. +- [ ] `bench --site pos-dev execute pos_next.sync.tests.run_plan3_tests.run` — 0 failures. +- [ ] Plan 1 tests still pass (11/11). +- [ ] Plan 2 tests still pass (6/6). +- [ ] E2E push test passes from bench-16. +- [ ] `bench --site pos-dev migrate` runs clean. diff --git a/docs/superpowers/specs/2026-04-05-branch-central-architecture-design.md b/docs/superpowers/specs/2026-04-05-branch-central-architecture-design.md new file mode 100644 index 00000000..c8389967 --- /dev/null +++ b/docs/superpowers/specs/2026-04-05-branch-central-architecture-design.md @@ -0,0 +1,856 @@ +# Branch ↔ Central Sync — Umbrella Architecture Design + +**Status:** Draft for review +**Date:** 2026-04-05 +**Scope:** Cross-cutting architecture. Sub-specs cover per-entity sync (masters, stock, transactions, conflict reconciliation) in separate documents. + +--- + +## 1. Purpose + +Enable POS Next to run as a two-tier deployment: a **central** ERPNext site that holds authoritative master data and an aggregate view of all branches, plus one or more **branch** ERPNext sites that run independently, keep selling when disconnected, and reconcile bidirectionally with central when connectivity returns. + +The POS Vue client can additionally **fail over** to central when its branch ERPNext is unreachable, writing invoices directly to central as a proxy, with branch catching up on recovery. + +This umbrella document fixes the architecture decisions shared across all entity-level sync work: topology, transport, change capture, identity, conflict resolution, failover semantics, observability, and security. Each entity type (Item, Customer, Sales Invoice, Stock Ledger Entry, …) will get its own sub-spec reusing these decisions. + +--- + +## 2. Goals and non-goals + +### Goals + +- Two full ERPNext installs, both operational independently, reconciling bidirectionally. +- Bidirectional sync for every synced entity, with **per-entity conflict resolution rules** chosen by ops. +- POS client failover to central when branch ERPNext is down, preserving naming series and origin tagging. +- Three-source data durability during failover: central, POS client IndexedDB, branch. +- Background-worker driven; sync never blocks the POS UI. +- Branches behind NAT: all HTTPS initiated by branch; no inbound to branch required. +- Identical naming for masters across sites; branch-coded naming series for transactions. +- Observable: dashboard, alerts, dead-letter queue, conflict queue. + +### Non-goals + +- Syncing GL Entries (each site computes its own GL from synced source documents). +- Multi-company per branch (one branch = one company, initially). +- Print format syncing. +- User password reset UI across sites (standard Frappe reset flow at the relevant site). +- Offline-writing at branch when central is down — branch keeps running and queues; covered implicitly. + +--- + +## 3. Topology + +Two full ERPNext sites, asymmetric roles: + +``` +┌────────────────────────────────────────────────────────────────────────────┐ +│ CENTRAL ERPNext (cloud) │ +│ • Authoritative for masters │ +│ • Aggregate view of all branches' transactions (read-only replicas) │ +│ • Failover backend when a branch ERPNext is unreachable │ +│ • Holds Sync Site Config records: one per registered branch │ +└────────────────────────────────────────────────────────────────────────────┘ + ▲ ▲ + HTTPS push │ │ HTTPS (failover writes) + (branch→central)│ │ (POS client→central) + │ │ +┌────────────────────────┴────┐ ┌────────────┴────────────────────────┐ +│ BRANCH ERPNext (on-prem) │ │ POS Vue Client │ +│ • Local POS backend │ │ Primary: current origin (branch) │ +│ • Own stock, own GL │ │ Failover: central_api_url │ +│ • Owns branch warehouses │ │ Offline: IndexedDB queue │ +│ • Pulls masters │ │ │ +│ • Pulls own failover txns │ │ Health-checks per request │ +│ • Pushes transactions up │ │ (not sticky) │ +└─────────────────────────────┘ └──────────────────────────────────────┘ +``` + +**Invariant:** Every HTTPS call between sites is initiated by the branch. Central is passive — it exposes endpoints and waits. Branches behind consumer-grade internet need only outbound HTTPS. + +**POS client configuration:** Bootstrap API serves `central_api_url` and `origin_branch_code` to the Vue app. `branch_api_url` is the current origin (the Vue app's host), so no additional URL config is needed for the primary path. + +**Three sync flows, all background-scheduled:** + +| Flow | Direction | Driver | Default Interval | Payload | +|------|-----------|--------|------------------|---------| +| Push Transactions | Branch → Central | Branch cron | 60s | Outbox rows: Sales Invoice, Payment Entry, Shifts, SLEs, new Customers | +| Pull Masters | Central → Branch | Branch cron | 300s | Items, Item Prices, POS Profiles, Warehouses, Customers, Users, etc. | +| Pull Failover | Central → Branch | Branch cron | 120s | Transactions central wrote on the branch's behalf during outage | + +Intervals are stored in Sync Site Config and read each cron tick; ops can retune without redeploy. + +--- + +## 4. Sync Site Config DocType + +Single DocType, **role-dependent cardinality** — singleton on a branch, multi-row on central. + +### 4.1 Fields + +``` +site_role Select "Branch" | "Central" +branch_code Data e.g. "CAI", "ALX", "HQ"; unique per site +branch Link ERPNext Branch +enabled Check + +─── Branch-only (when site_role=Branch) ─── +central_url Data https://hq.example.com +sync_username Data real Frappe User at central +sync_password Password encrypted at rest +push_interval_seconds Int default 60 +pull_masters_interval_seconds Int default 300 +pull_failover_interval_seconds Int default 120 +last_push_at Datetime +last_pull_masters_at Datetime +last_pull_failover_at Datetime +outbox_depth Int read-only, live +last_sync_error Small Text read-only +sibling_branches Table (ro) list of other branches, synced down from central + +─── Central-only (when site_role=Central) ─── +registered_branch_url Data optional, for central→branch health ping +notes Small Text + +─── Both roles (central is authoritative for the registry) ─── +synced_doctypes Table → Sync DocType Rule +``` + +### 4.2 Sync DocType Rule (child) + +``` +doctype Link the DocType to sync +direction Select "Central→Branch" | "Branch→Central" | "Bidirectional" +cdc_strategy Select "Outbox" | "Watermark" +conflict_rule Select "Last-Write-Wins" | "Central-Wins" | "Branch-Wins" | "Field-Level-LWW" | "Manual" +priority Int lower = synced earlier +enabled Check +batch_size Int default 100 +``` + +### 4.3 Cardinality enforcement + +In `validate`/`before_insert`: + +- If `site_role == "Branch"` and `frappe.db.count("Sync Site Config") > 0`: reject with a clear error. +- If `site_role == "Central"`: unlimited rows (one per registered branch). + +### 4.4 Seeded defaults + +On install, `synced_doctypes` is populated with the default list in §8. Operators can add/remove rows later. + +### 4.5 Credentials & session login + +Machine-to-machine auth uses **username + password session login** against central — no API keys. + +Flow: + +1. Sync worker reads `central_url`, `sync_username`, `sync_password` from Sync Site Config. +2. `POST {central_url}/api/method/login` with form-encoded `{usr, pwd}`. +3. Receives `sid` cookie; stores in-memory for worker process lifetime. +4. All subsequent sync requests include the `sid` cookie. +5. On 401/403, worker re-logs in and retries once. + +A helper `pos_next/sync/auth.py` wraps login/session/retry so adapters never see login mechanics. + +The sync user is a real Frappe User with the `POS Next Sync Agent` role (§9.2), one dedicated user per branch. + +--- + +## 5. Change capture + +### 5.1 Outbox (for transactions) + +Every DocType with `cdc_strategy = "Outbox"` in the registry gets hooked through generic Frappe doc_events (`on_update`, `on_submit`, `on_cancel`, `on_trash`). Each event inserts a row into: + +``` +DocType: Sync Outbox +reference_doctype Link e.g. "Sales Invoice" +reference_name Data +operation Select "insert" | "update" | "submit" | "cancel" | "delete" +payload Long Text JSON snapshot at event time +priority Int from Sync DocType Rule.priority +sync_status Select "pending" | "syncing" | "acked" | "failed" | "dead" +attempts Int +last_error Small Text +next_attempt_at Datetime for exponential backoff +created_at Datetime +acked_at Datetime + +Indexes: (sync_status, priority, next_attempt_at), (reference_doctype, reference_name) +``` + +**Auto-compaction on write** (back-pressure defense): before insert, check for an existing `pending` row on `(reference_doctype, reference_name, operation)`. If found, update that row in place instead of inserting a new one. Terminal-state operations (`submit`, `cancel`, `delete`) are never compacted — they always insert. + +**Draining** (`push_outbox` scheduled job): + +- Select rows ordered by `(priority ASC, created_at ASC)` where `sync_status IN ('pending','failed') AND next_attempt_at <= now()`. +- POST each to central's ingest endpoint, batching by DocType up to `batch_size`. +- On 2xx: set `sync_status='acked'`, `acked_at=now()`. +- On failure: `attempts += 1`, `next_attempt_at = now() + 2^attempts seconds`, `sync_status='failed'` with `last_error`. +- After `attempts > 10`: set `sync_status='dead'`, move to Sync Dead Letter list, alert ops. + +### 5.2 Watermark + Tombstones (for masters pulled from central) + +``` +DocType: Sync Watermark +doctype Link unique; one row per pulled DocType +last_modified Datetime max(modified) seen on last successful pull +last_pulled_at Datetime +records_pulled Int + +DocType: Sync Tombstone (lives on central; written by on_trash hook) +reference_doctype Link +reference_name Data +deleted_at Datetime +``` + +**Pull flow** (`pull_masters` scheduled job on branch): + +For each `synced_doctypes` row where `direction` includes `Central→Branch` and `cdc_strategy='Watermark'`: + +``` +GET {central_url}/api/method/pos_next.sync.api.changes.changes_since + ?doctype=Item&since=&limit= +``` + +Central returns `{upserts: [...], tombstones: [...], next_since: ""}`. Branch applies upserts/deletes via the adapter, then advances its watermark to `next_since`. + +**Why tombstones:** a deleted row cannot be found by `modified > watermark`. Central writes a tombstone on `on_trash`; branches receive and apply it. + +**Clock skew:** watermarks are set from timestamps reported by central, not branch, so branch↔central clock skew cannot cause missed records. + +### 5.3 Retention + +- Acknowledged outbox rows: archived to `Sync History` after 7 days; purged from history after 90 days (both configurable in Sync Site Config). +- Tombstones: retained for 90 days (long enough for any branch with a reasonable outage to catch the delete). + +--- + +## 6. Sync engine — pluggable adapter architecture + +### 6.1 Module layout + +``` +pos_next/sync/ +├── __init__.py +├── engine.py # SyncEngine — orchestrates push/pull cycles +├── auth.py # login/session/retry helper +├── outbox.py # OutboxDrainer — push_outbox job +├── masters_puller.py # MasterPuller — pull_masters job +├── failover_puller.py # FailoverPuller — pull_failover job +├── hooks.py # generic doc_events handlers +├── registry.py # reads Sync DocType Rule, returns adapter for a doctype +├── transport.py # HTTP client + auth + retries +├── conflict.py # resolve(local, incoming, rule) → winner +├── adapters/ +│ ├── base.py # BaseSyncAdapter (abstract) +│ ├── item.py +│ ├── item_price.py +│ ├── customer.py # mobile-dedup logic +│ ├── pos_profile.py +│ ├── warehouse.py +│ ├── user.py +│ ├── sales_invoice.py # validates naming series/origin_branch +│ ├── payment_entry.py +│ ├── pos_opening_shift.py # priority=10, synced-first +│ ├── pos_closing_shift.py +│ ├── stock_ledger_entry.py +│ └── ... +└── api/ + ├── ingest.py # central: POST endpoint for branch pushes + ├── changes.py # central: GET changes_since(doctype, watermark) + ├── failover_txns.py # central: GET failover_transactions_for_branch + ├── metadata.py # central: GET metadata_summary (uuid-only integrity check) + ├── health.py # central: GET health + server time; branch: GET reconciliation_status + ├── confirm.py # branch: POST confirm_sync_uuid (POS client dedup dropper) + └── client_report.py # branch: POST inventory (periodic uuid list) + storage_loss_event +``` + +### 6.2 BaseSyncAdapter interface + +```python +class BaseSyncAdapter: + doctype: str + + def serialize(self, doc) -> dict: + """Build the sync payload. Default: doc.as_dict() including children.""" + + def apply_incoming(self, payload: dict, operation: str) -> str: + """Create/update/delete the local record. Returns local name.""" + + def conflict_key(self, payload: dict) -> tuple: + """What identifies this record across sites. Default: ('name',).""" + + def validate_incoming(self, payload: dict) -> None: + """Raise if payload is invalid (e.g., naming series mismatch).""" + + def pre_apply_transform(self, payload: dict) -> dict: + """Adapter hook for payload rewrites (strip server-only fields, etc.).""" +``` + +**The engine never special-cases a DocType.** All per-entity knowledge lives in the adapter. Engine iterates the registry, dispatches. + +### 6.3 Adapter discovery + +`registry.py` exposes `get_adapter(doctype) -> BaseSyncAdapter`. Adapters register themselves at import time via a decorator or module-level dict. Adding a new synced DocType = write adapter + register + add Sync DocType Rule row. + +### 6.4 Two worked examples + +**Customer adapter — mobile de-dup (§8):** + +```python +class CustomerSyncAdapter(BaseSyncAdapter): + doctype = "Customer" + + def conflict_key(self, payload): + return ("mobile_no",) + + def apply_incoming(self, payload, operation): + existing = frappe.db.get_value( + "Customer", + {"mobile_no": payload["mobile_no"]}, + "name", + ) + if existing and existing != payload["name"]: + # Canonical record exists locally under a different name; + # caller is responsible for re-pointing any invoices. + return existing + return super().apply_incoming(payload, operation) +``` + +**Sales Invoice adapter — naming series validation (§8):** + +```python +class SalesInvoiceSyncAdapter(BaseSyncAdapter): + doctype = "Sales Invoice" + + def validate_incoming(self, payload): + expected_branch = payload["origin_branch"] + naming_series = payload["naming_series"] + if expected_branch not in naming_series: + raise ValidationError( + f"Invoice {payload['name']}: naming series " + f"{naming_series} does not encode origin branch {expected_branch}" + ) +``` + +### 6.5 Scheduler + +```python +# pos_next/hooks.py +scheduler_events = { + "cron": { + "* * * * *": [ + "pos_next.sync.outbox.drain_if_due", + "pos_next.sync.masters_puller.pull_if_due", + "pos_next.sync.failover_puller.pull_if_due", + ] + } +} +``` + +Jobs self-throttle by comparing `now() - last_*_at` against the configured interval. Interval changes in Sync Site Config take effect on the next tick without redeploy. + +--- + +## 7. Identity and naming + +### 7.1 Master data: identical naming across sites + +All masters (Item, Customer, POS Profile, Warehouse, User, …) have **identical `name`** on branch and central. Central is the naming authority; branches apply names exactly as received. + +### 7.2 Transactions: branch-coded naming series + +Transaction DocTypes (Sales Invoice, Payment Entry, POS Opening Shift, POS Closing Shift, Stock Ledger Entry, …) use **naming series that encode the origin branch code**: + +- Cairo Downtown → `SINV-CAI-.#####` +- Alex Port → `SINV-ALX-.#####` + +The naming series is configured on the POS Profile (a master), so it is identical on both sites. When central writes failover invoices, it uses the same series the branch's POS Profile specifies — no renaming needed on branch recovery. + +### 7.3 `sync_uuid` as the cross-site dedup key + +Every record in a **synced transaction DocType** carries a `sync_uuid` custom field set at creation by whichever side originates the record: + +- Branch-created → branch generates the UUID. +- Central-failover-created → central generates the UUID. +- POS-client IndexedDB → client generates the UUID. + +Dedup check on apply: + +```python +if frappe.db.exists(doctype, {"sync_uuid": payload["sync_uuid"]}): + return # already present via another path +``` + +This makes every sync operation idempotent. A record can arrive at branch via pull_failover, via IndexedDB flush, or via a POS client re-push — the first wins, others are no-ops. + +### 7.4 Custom fields added + +On `Sales Invoice`, `Payment Entry`, `Stock Ledger Entry`, `POS Opening Shift`, `POS Closing Shift`, `Customer`: + +- `sync_uuid` — Data, unique indexed, set at creation. +- `origin_branch` — Data, never mutated after creation (the `branch_code` of the site that created it). +- `synced_from_failover` — Check, set only on central when it writes as proxy for a branch. + +A one-time backfill patch populates `sync_uuid` on existing rows (idempotent: fills only where NULL). + +--- + +## 8. Synced DocTypes registry (seeded defaults) + +Populated into `Sync DocType Rule` on install. Ops can add/remove rows later. + +| DocType | Direction | CDC | Conflict Rule | Priority | +|---------|-----------|-----|---------------|----------| +| Item | Central→Branch | Watermark | Central-Wins | 100 | +| Item Price | Central→Branch | Watermark | Central-Wins | 110 | +| Item Group | Central→Branch | Watermark | Central-Wins | 100 | +| Item Barcode | Central→Branch | Watermark | Central-Wins | 100 | +| UOM, UOM Conversion Detail | Central→Branch | Watermark | Central-Wins | 100 | +| Price List | Central→Branch | Watermark | Central-Wins | 100 | +| POS Profile | Central→Branch | Watermark | Central-Wins | 90 | +| POS Settings | Central→Branch | Watermark | Central-Wins | 90 | +| POS Barcode Rules | Central→Branch | Watermark | Central-Wins | 90 | +| POS Offer / POS Coupon | Central→Branch | Watermark | Central-Wins | 120 | +| Loyalty Program | Central→Branch | Watermark | Central-Wins | 120 | +| Warehouse | Central→Branch | Watermark | Central-Wins | 90 | +| Branch | Central→Branch | Watermark | Central-Wins | 90 | +| Company, Currency, Exchange Rate | Central→Branch | Watermark | Central-Wins | 80 | +| Tax Templates, Item Tax Template | Central→Branch | Watermark | Central-Wins | 110 | +| Mode of Payment, MOP Account | Central→Branch | Watermark | Central-Wins | 110 | +| User, Role Profile | Central→Branch | Watermark | Central-Wins | 80 | +| Employee, Sales Person | Central→Branch | Watermark | Central-Wins | 110 | +| Customer Group | Central→Branch | Watermark | Central-Wins | 110 | +| Customer | Bidirectional | Outbox | Field-Level-LWW (key: mobile_no) | 50 | +| POS Opening Shift | Branch→Central | Outbox | Branch-Wins | 10 | +| POS Closing Shift | Branch→Central | Outbox | Branch-Wins | 20 | +| Sales Invoice | Branch→Central | Outbox | Branch-Wins | 50 | +| Payment Entry | Branch→Central | Outbox | Branch-Wins | 50 | +| Stock Ledger Entry | Branch→Central | Outbox | Branch-Wins | 60 | +| Offline Invoice Sync | Branch→Central | Outbox | Branch-Wins | 70 | +| Wallet, Wallet Transaction | Bidirectional | Outbox | Field-Level-LWW | 60 | + +Low priority number = synced earlier. POS Opening Shift (10) is synced-first so central has the shift record before failover invoices reference it. + +--- + +## 9. Conflict resolution + +### 9.1 Resolution strategies + +| Rule | Behavior | +|------|----------| +| Last-Write-Wins | Compare `modified`; newest wins; ties go to incoming. | +| Central-Wins | Incoming from central always wins. Incoming from branch accepted only if no local edit since last sync. | +| Branch-Wins | Incoming from branch always wins. | +| Field-Level-LWW | Per-field `modified` tracking; each field takes the newer value independently. | +| Manual | Both versions stored; Sync Conflict record created; neither applied until human resolves. | + +### 9.2 Detection + +On incoming apply, engine: + +1. Loads local version (by `conflict_key()`). +2. Computes hash of local payload vs. incoming. +3. Hashes match → no-op. +4. Local absent → insert. +5. Local present, hashes differ → consult `Sync Record State.last_synced_hash`: + - Local hash == `last_synced_hash` → local untouched since last sync, apply incoming directly. + - Local hash != `last_synced_hash` → true conflict; resolve per entity's `conflict_rule`. + +``` +DocType: Sync Record State +reference_doctype Link +reference_name Data +last_synced_hash Data SHA256 of last-synced payload +last_synced_at Datetime +last_synced_from Data "central" | branch_code +Unique: (reference_doctype, reference_name) +``` + +### 9.3 Manual resolution + +``` +DocType: Sync Conflict +reference_doctype Link +reference_name Data +local_payload Long Text JSON snapshot +incoming_payload Long Text JSON snapshot +incoming_from Data +detected_at Datetime +status Select "pending" | "resolved_local" | "resolved_incoming" | "resolved_merged" +resolved_by Link → User +resolution_notes Text +``` + +A resolver form shows a field-level diff and lets operators pick a winner or edit the merged record. + +### 9.4 Field-Level-LWW implementation + +Requires per-field timestamps. Stored as a child table `Sync Field Timestamp` keyed off (`reference_doctype`, `reference_name`, `fieldname`). Written whenever a field changes locally. Engine's field-level merge picks the newer timestamp per field. + +This has storage overhead (N fields × M records × 2 rows). Applied only where `conflict_rule = Field-Level-LWW` (Customer, Wallet). + +--- + +## 10. POS client failover to central + +### 10.1 Failover decision + +POS client's API wrapper tries backends in order, per request (not sticky): + +``` +1. Branch (current origin) — timeout 500ms +2. Central (central_api_url) — timeout 1000ms +3. IndexedDB offline queue (existing behavior) +``` + +### 10.2 Client behavior — write to IndexedDB first, always + +**Invariant:** every record the POS client creates exists in IndexedDB the instant the client generates it. Backend writes are layered on top. + +``` +POS creates invoice (with sync_uuid) + │ + ├──▶ Write to IndexedDB first (local source of truth) + │ + └──▶ Attempt backend write (branch → central → give up) + │ + ▼ + update IndexedDB row with ack + backend identifier +``` + +IndexedDB record states: + +- `queued` — created locally, no backend write attempted yet. +- `sent_to_branch` — branch ack'd. +- `sent_to_central` — central ack'd (failover path). +- `confirmed_at_branch` — branch confirmed it has the record; safe to drop. +- `failed` — exhausted retries; needs ops attention. + +**Dropping records from IndexedDB:** only when branch explicitly confirms via the `confirm_sync_uuid` endpoint. Central-ack alone is NOT enough — the client must know branch has the record before discarding. + +### 10.3 Central-side failover endpoint behavior + +When a POS client POSTs a write request (invoice submit, payment, etc.) to central: + +1. Identify origin branch from the POS Profile in the payload. +2. Write as the branch's sync user, with `origin_branch=`, `synced_from_failover=1`. +3. Use the branch's naming series (carried by POS Profile → same on both sides). +4. Stock availability: check `block_on_failover_stock_unknown` on the POS Profile: + - `true` and central's stock view is stale → reject with clear error. + - `false` → allow, proceed. +5. Write SLE to the branch's warehouse (as proxy), tagged `synced_from_failover=1`. +6. Link to the POS Opening Shift (central already has it — shifts are priority-10 synced-first). + +### 10.4 Branch recovery — three-source reconciliation + +When branch comes back up, its `pull_failover` cron pulls records central wrote as proxy: + +``` +GET {central_url}/api/method/pos_next.sync.api.failover_txns.get_failover_transactions + ?branch_code=CAI&since= +``` + +Response grouped by DocType in dependency order: + +1. Customer (new walk-ins created during failover) +2. POS Opening Shift updates (if any) +3. Sales Invoice + children +4. Payment Entry +5. Stock Ledger Entry +6. POS Closing Shift (if closed during failover) + +Branch applies each via adapter. Idempotency via `sync_uuid`. + +### 10.5 Reconciliation-gated IndexedDB flush + +**Rule:** POS clients may NOT flush historical IndexedDB records to branch until branch is **provably fully reconciled with central** for branch-originated records. Otherwise branch could receive a record via IndexedDB that central doesn't have yet — violating "central is the aggregate." + +Branch exposes: + +``` +GET /api/method/pos_next.sync.api.health.reconciliation_status +→ { + "branch_code": "CAI", + "reconciled_with_central": true|false, + "pending_failover_pulls": 0, + "last_reconciled_at": "...", + "last_central_check_at": "..." +} +``` + +Branch computes `reconciled_with_central` on each pull_failover cycle by asking central for its metadata_summary (uuid-only) for `origin_branch=CAI` and comparing to local. Empty diff → reconciled. + +POS client checks this flag before flushing; if false, client holds IndexedDB records passively. New invoices still flow normally to branch when branch is up. + +### 10.6 Metadata integrity check + +``` +GET {central_url}/api/method/pos_next.sync.api.metadata.metadata_summary + ?branch_code=CAI&opening_shift=POS-OPE-CAI-00042 +→ [{"doctype": "Sales Invoice", "name": "SINV-CAI-...", "sync_uuid": "..."}, ...] +``` + +Returns uuid-only metadata for lightweight cross-checking without full payloads. + +### 10.7 Close-shift guard (three-source agreement) + +```python +def can_close_shift(opening_shift): + central_uuids = fetch_central_metadata_summary(opening_shift.name) + client_uuids = fetch_pending_indexeddb_uuids_for_shift(opening_shift.name) + local_uuids = frappe.get_all(..., pluck="sync_uuid") + + expected = set(central_uuids) | set(client_uuids) + missing = expected - set(local_uuids) + + if missing: + raise ValidationError( + f"Cannot close: {len(missing)} failover invoices still missing. " + f"Retry in a minute." + ) + if pending_indexeddb_flushes_for_shift(opening_shift): + raise ValidationError("Cannot close: POS clients still flushing offline queue.") + return branch_side_reconciliation(opening_shift) +``` + +### 10.8 Client-side protections against IndexedDB loss + +| Protection | Prevents | UX | +|------------|----------|------| +| Block incognito/private mode | Tab-close wipe | Blocking screen on POS boot | +| `navigator.storage.persist()` | Quota eviction | Silent on success; warn on fail | +| Failover banner | Accidental clear | Persistent header banner when IndexedDB has unconfirmed rows | +| `beforeunload` guard | Accidental tab close | Native browser confirmation dialog | +| Health indicator | Awareness | Header widget with backend + IndexedDB state | +| Size-drop detector | Detect loss after fact | Compare current vs. `posnext_idb_size` in localStorage on boot; alert on large drop | +| Periodic inventory ping (60s during failover) | Server-side visibility | Background POST; no user UI | + +Failover banner example: + +``` +┌──────────────────────────────────────────────────────┐ +│ ⚠ FAILOVER MODE — DO NOT CLOSE THIS TAB │ +│ Branch ERPNext offline. 23 invoices held locally. │ +│ Status: writing to central | IndexedDB: 23 pending │ +└──────────────────────────────────────────────────────┘ +``` + +--- + +## 11. Observability + +### 11.1 Sync Status dashboard + +New Frappe page at `/app/sync-status`: + +- Outbox depth (pending / failed / dead). +- Last push_outbox, pull_masters, pull_failover timestamps. +- `reconciled_with_central` flag. +- Active POS client count + total IndexedDB pending across clients. +- Recent Sync Log errors (last 10). +- Conflict Queue count. + +### 11.2 Supporting DocTypes + +- `Sync Log` — append-only, one row per sync operation (push/pull) with status, duration, records touched, error. +- `Sync Conflict` — manual-resolution queue (§9.3). +- `Sync Dead Letter` — outbox rows that exceeded max retries, awaiting ops. +- `Sync History` — archived acknowledged outbox rows (§5.3). + +### 11.3 Alerts + +| Condition | Severity | +|-----------|----------| +| Outbox depth > 1000 for > 10 min | Warning | +| Outbox depth > 10000 | Critical | +| Last push older than 5 × push_interval_seconds | Warning | +| Last push older than 30 min | Critical | +| Any Sync Dead Letter row | Warning | +| New Sync Conflict row | Warning (notify conflict-resolver role) | +| Branch reports reconciled_with_central=false for > 30 min post-failover | Critical | +| POS client reports suspicious_storage_loss event | Critical | + +Recipients configured in Sync Site Config (Link to User or Role). + +--- + +## 12. Security + +- **Transport:** HTTPS only. `central_url` with scheme other than `https` rejected at save. +- **Authentication:** Session login (username + password) using a real Frappe User per branch; `sync_password` stored as Frappe Password fieldtype (at-rest encrypted via site key). +- **Authorization:** Dedicated role `POS Next Sync Agent`, granted only read/write on registry-listed DocTypes. A Permission Query Condition restricts the sync user to records where `origin_branch = ` on branch-scoped DocTypes — prevents a compromised branch from writing records tagged as another branch's. +- **Replay protection:** Ingest endpoint rejects payloads whose `created_at` is older than 24 hours (configurable) or whose `sync_uuid` has already been processed. +- **Audit:** Sync Log is append-only; `owner` is always the sync user. +- **Secret handling:** `sync_password` never appears in logs, API responses, or error messages. Rotation = update Sync Site Config; takes effect on next worker cycle (re-login). + +--- + +## 13. Testing strategy + +### 13.1 Unit tests (per adapter) + +Each `BaseSyncAdapter` subclass has test cases for `serialize`, `apply_incoming`, `conflict_key`, `validate_incoming`, `pre_apply_transform`, using mocked Frappe ORM. Fast, isolated. + +### 13.2 Integration tests (per sync flow) + +Dual-site fixture: two Frappe sites on the same bench (`branch.test` + `central.test`), real HTTP between them. Test suites cover push-transactions, pull-masters, pull-failover independently. + +### 13.3 End-to-end scenario tests + +1. **Happy path:** branch creates invoice → push → central has it with correct sync_uuid, origin_branch. +2. **Master update:** central updates Item Price → pull on branch → branch has it; no conflict. +3. **Conflict — Field-Level-LWW:** both sides edit Customer different fields → merged record has both edits. +4. **Conflict — Central-Wins:** both sides edit Item Price → central wins; branch's change appears in Sync Conflict only if configured. +5. **Failover write:** POS writes to central → branch pulls → branch has it → sync_uuid matches. +6. **Three-source recovery:** POS wrote to central AND stored in IndexedDB → branch recovers → pull_failover → client flushes → all sync_uuids present exactly once on branch. +7. **Close-shift guard:** missing failover records → close refused; complete → close succeeds. +8. **Outbox back-pressure:** 5000 outbox rows + compaction → drain completes, no duplicates. +9. **Reconciliation gate:** branch not yet reconciled → client refuses to flush IndexedDB. +10. **IndexedDB loss detection:** simulate storage clear → size-drop alert fires → report reaches central. + +### 13.4 Test environment + +Bench script stands up `branch.test` + `central.test` sites; seed fixtures install reciprocal Sync Site Config on both. A single `bench run-sync-tests` entry point runs all suites. + +### 13.5 Load/soak (post-MVP) + +- 10k outbox rows × hourly push cycles for 24h. +- 50 concurrent POS clients during simulated failover. + +--- + +## 14. Install & rollout + +### 14.1 Install tasks + +1. Create DocTypes: Sync Site Config, Sync DocType Rule, Sync Outbox, Sync Watermark, Sync Tombstone, Sync Record State, Sync Field Timestamp, Sync Conflict, Sync Log, Sync Dead Letter, Sync History. +2. Seed default `synced_doctypes` rules. +3. Add custom fields: `sync_uuid`, `origin_branch`, `synced_from_failover` on target DocTypes. +4. Backfill `sync_uuid` on existing transaction rows (idempotent patch). +5. Create role `POS Next Sync Agent` with seeded permissions + permission query conditions. +6. Register scheduled jobs in hooks.py. + +### 14.2 First-run UX + +1. System Manager opens Sync Site Config. +2. Selects `site_role` (Branch or Central). +3. Fills central URL + sync user + sync password (branch) OR fills registered branches (central). +4. Clicks **"Test Sync Connection"** — sync worker calls `health` endpoint immediately and shows result. +5. Saves. Sync workers begin at next cron tick. + +--- + +## 15. Dev Environment Topology + +### 15.1 Two-bench setup + +Development and integration testing uses two separate Frappe benches on the same machine, each on its own port: + +``` +┌─────────────────────────────────────────┐ ┌─────────────────────────────────────────┐ +│ frappe-bench (port 8000) │ │ frappe-bench-16 (port 8001) │ +│ Frappe v15 · Python 3.10 │ │ Frappe v16+ · Python 3.14 │ +│ │ │ │ +│ Site: pos-central │ │ Site: dev.pos │ +│ Role: CENTRAL │ │ Role: BRANCH │ +│ ERPNext: v15 │ │ ERPNext: v16 │ +│ pos_next: feat/sync-foundation │ │ pos_next: feat/sync-foundation │ +│ │ │ │ +│ Sync Site Config: │ │ Sync Site Config: │ +│ site_role = Central │ │ site_role = Branch │ +│ branch_code = CAI │ │ branch_code = CAI │ +│ registered_branch_url = │ │ central_url = http://localhost:8000 │ +│ http://localhost:8001 │ │ sync_username = Administrator │ +└─────────────────────────────────────────┘ └─────────────────────────────────────────┘ + ▲ │ + │ HTTP (localhost, different ports) │ + └────────────────────────────────────────────────┘ +``` + +**Why two benches, not two sites on one bench:** Different Frappe/ERPNext major versions (v15 vs v16) cannot coexist on a single bench. Two benches also give us separate Redis, separate workers, and separate ports — closer to production topology. + +**No Host header routing needed:** Each bench binds a different port (`webserver_port` in `common_site_config.json`), so `http://localhost:8000` always resolves to frappe-bench and `http://localhost:8001` to frappe-bench-16. + +**`POS_NEXT_SYNC_ALLOW_HTTP=1`:** Required in dev since transport is `http://localhost`. This env var bypasses the HTTPS enforcement on `central_url` in Sync Site Config validation. Never set in production. + +### 15.2 Version-agnostic sync protocol + +The sync HTTP API is a **stable contract** independent of Frappe/ERPNext version. The same pos_next codebase runs on both v15 and v16. + +**Design principles:** + +- **Single codebase:** pos_next already handles v15/v16 differences at runtime (e.g., `fix: support ERPNext v15/v16 change amount GL entry method`). The sync module follows the same pattern — no version-specific forks. +- **pos_next-owned endpoints:** All sync API lives under `pos_next.sync.api.*`, not Frappe's generic `/api/resource/`. This isolates the protocol from Frappe ORM version differences. +- **Explicit payload schema:** Adapters serialize using explicit field lists defined by pos_next, not Frappe's `as_dict()`. Internal/version-specific fields are stripped. +- **Runtime version detection:** Where Frappe/ERPNext field names or behaviors differ between versions, pos_next detects the running version at runtime and adapts (e.g., `hasattr(doc, 'field_v16') or doc.field_v15`). + +This means a v15 central can sync with a v16 branch and vice versa — branches in the field may upgrade at different times. + +### 15.3 Bootstrap procedure + +To set up a new branch site for sync testing: + +```bash +# 1. Ensure the bench has Frappe + ERPNext + pos_next installed +# pos_next must be on the feat/sync-foundation branch (or later) + +# 2. Run migrate to create Sync DocTypes +bench --site migrate + +# 3. Configure as branch (pointing at central) +POS_NEXT_SYNC_ALLOW_HTTP=1 bench --site execute \ + pos_next.sync.tests._setup_multi_site.setup_as_branch + +# 4. Configure central to know about this branch +POS_NEXT_SYNC_ALLOW_HTTP=1 bench --site execute \ + pos_next.sync.tests._setup_multi_site.setup_as_central +``` + +Helper functions in `pos_next/sync/tests/_setup_multi_site.py`: +- `setup_as_branch()` — creates Branch Sync Site Config pointing at `http://localhost:8000` +- `setup_as_central()` — creates Central Sync Site Config registering branch at `http://localhost:8001` +- `show_current()` — prints current Sync Site Config state +- `cleanup()` — removes all Sync Site Config rows + +### 15.4 Running both benches + +```bash +# Terminal 1 — Central (port 8000) +cd /home/ubuntu/frappe-bench && bench start + +# Terminal 2 — Branch (port 8001) +cd /home/ubuntu/frappe-bench-16 && bench start +``` + +Both must be running for cross-site sync operations. + +--- + +## 16. Open items for sub-specs + +These are intentionally left to per-entity sub-specs: + +- **Masters sub-spec:** exact fields serialized per master, handling of child tables (e.g. Item Barcodes, POS Profile payments), tombstone semantics per entity. +- **Stock sub-spec:** exact SLE payload shape, failover-SLE reconciliation rules, Material Transfer handling. +- **Transactions sub-spec:** Sales Invoice child table handling, Payment Entry references, POS Opening/Closing Shift details. +- **Conflict reconciliation sub-spec:** Sync Conflict resolver UI, manual-merge UX, bulk-resolve tooling. + +--- + +## 17. Glossary + +- **Branch:** a branch ERPNext site (on-prem, behind consumer internet). +- **Central:** the cloud ERPNext site; authoritative for masters, aggregate for transactions. +- **Failover:** POS Vue client bypassing its branch and writing directly to central. +- **Failover pull:** branch retrieving its own records from central post-recovery. +- **Outbox:** table of pending change events at the source site. +- **Watermark:** the per-DocType `last_modified` marker for pull cycles. +- **Tombstone:** record of a delete that pulled-from sites need to replay. +- **sync_uuid:** globally unique identifier for a synced transaction record; generated at creation. +- **origin_branch:** the `branch_code` of the site that originated the record. +- **Reconciled with central:** branch's local view of its own records equals central's view (by uuid set). +- **Sync user:** dedicated real Frappe User whose credentials machine-to-machine sync uses. diff --git a/docs/superpowers/specs/2026-04-06-masters-pull-design.md b/docs/superpowers/specs/2026-04-06-masters-pull-design.md new file mode 100644 index 00000000..e0082f97 --- /dev/null +++ b/docs/superpowers/specs/2026-04-06-masters-pull-design.md @@ -0,0 +1,248 @@ +# Masters Pull — Sub-Spec (Plan 2) + +**Status:** Approved +**Date:** 2026-04-06 +**Parent Spec:** `docs/superpowers/specs/2026-04-05-branch-central-architecture-design.md` +**Scope:** Central-side API endpoints, branch-side masters puller, first adapters, tombstone hooks, scheduler integration. First real data flow — branch pulls master data from central. + +--- + +## 1. Purpose + +After Plan 1 laid the foundation (DocTypes, module skeleton, custom fields, registry), Plan 2 delivers the first real sync flow: branch pulls master data from central. After Plan 2, changing an Item on central will automatically appear on the branch within 5 minutes. + +--- + +## 2. Components + +| Component | Location | Purpose | +|-----------|----------|---------| +| `changes_since` API | `pos_next/sync/api/changes.py` | Central endpoint: returns upserts + tombstones since watermark | +| `health` API | `pos_next/sync/api/health.py` | Central endpoint: server time, version info | +| `MastersPuller` | `pos_next/sync/masters_puller.py` | Branch job: iterates registry, calls changes_since, applies via adapter | +| Tombstone hooks | `pos_next/sync/hooks.py` | Central: on_trash writes tombstones for synced masters | +| Item adapter | `pos_next/sync/adapters/item.py` | Serialize/apply Item with children (barcodes, etc.) | +| Item Price adapter | `pos_next/sync/adapters/item_price.py` | Composite conflict key | +| Customer adapter | `pos_next/sync/adapters/customer.py` | Bidirectional, mobile-no dedup | +| Generic master adapter | `pos_next/sync/adapters/generic_master.py` | Default upsert for ~20 simple masters | +| Scheduler | `pos_next/hooks.py` | `pull_if_due` cron every minute | + +**Not in scope:** Push transactions (Plan 3), failover (Plan 3), POS client changes, Sync Status dashboard. + +--- + +## 3. Central-side API + +### 3.1 `changes_since` endpoint + +**Endpoint:** `GET /api/method/pos_next.sync.api.changes.changes_since` + +**Parameters:** +- `doctype` — e.g. "Item" +- `since` — ISO datetime (the branch's watermark) +- `limit` — batch size (default 100) + +**Response:** +```json +{ + "upserts": [ + {"name": "ITEM-001", "item_name": "Apple", "modified": "2026-04-06 10:00:00", "...": "..."}, + ], + "tombstones": [ + {"reference_name": "ITEM-OLD", "deleted_at": "2026-04-06 09:00:00"} + ], + "next_since": "2026-04-06 10:00:00", + "has_more": true +} +``` + +**Logic:** +1. Query `tab{doctype}` where `modified > since` ordered by `modified ASC`, limit + 1 (to detect `has_more`). +2. Query `Sync Tombstone` where `reference_doctype = doctype` and `deleted_at > since`. +3. `next_since` = max `modified` from returned upserts (branch advances its watermark to this). +4. Serialize each record via the adapter's `serialize()` method if an adapter is registered, otherwise `doc.as_dict()`. + +**Security:** Whitelisted endpoint. Requires authentication — only accessible to users with `POS Next Sync Agent` role or System Manager. No branch-specific filtering needed for masters (all branches get the same masters). + +### 3.2 `health` endpoint + +**Endpoint:** `GET /api/method/pos_next.sync.api.health.health` + +**Response:** +```json +{ + "server_time": "2026-04-06 10:00:00", + "frappe_version": "15.97.0", + "pos_next_version": "1.16.0", + "site_role": "Central" +} +``` + +Used by branch to check connectivity and clock reference. No auth required (public). + +--- + +## 4. Branch-side MastersPuller + +**Class:** `MastersPuller` in `pos_next/sync/masters_puller.py` + +### 4.1 Entry point + +`pull_if_due()` — called every minute by the scheduler. Checks: +1. Is this site a Branch? (read Sync Site Config). If not, return. +2. Is `now() - last_pull_masters_at >= pull_masters_interval_seconds`? If not, return. +3. Is sync enabled? If not, return. +4. Run the pull cycle. + +### 4.2 Pull cycle + +1. Build a `SyncSession` via `transport.build_session_from_config()`. +2. Read Sync DocType Rules where `direction` includes `Central→Branch` and `enabled=1`, sorted by `priority ASC`. +3. For each rule: + - Get adapter from registry (or use `BaseSyncAdapter` default). + - Read `Sync Watermark` for this DocType (or `"2000-01-01 00:00:00"` if first pull). + - Loop: + - Call `changes_since(doctype, since=watermark, limit=batch_size)` via `SyncSession.get()`. + - Apply upserts via adapter. + - Delete tombstoned records. + - Advance watermark to `next_since`. + - Break when `has_more=false`. +4. Update `last_pull_masters_at` on the Sync Site Config. +5. Log result to `Sync Log`. + +### 4.3 Applying upserts + +For each record in the upserts list: +1. Call `adapter.validate_incoming(payload)` — skip if raises, log warning. +2. Compute hash via `payload.compute_hash(payload_dict)`. +3. Check `Sync Record State` — if hash matches `last_synced_hash`, skip (no change since last sync). +4. Call `adapter.apply_incoming(payload, "update")` — creates or updates locally. +5. Update `Sync Record State` with new hash and source="central". + +### 4.4 Applying tombstones + +For each tombstone: +- If the local record exists, delete it via `frappe.delete_doc(doctype, name, ignore_permissions=True, force=True)`. +- Tombstones don't go through the adapter (delete is universal). +- Remove the corresponding `Sync Record State` row if it exists. + +### 4.5 Error handling + +- **Single record fails to apply:** Log to `Sync Log` with error details, skip it, continue with the rest of the batch. Don't advance watermark past the failed record's `modified` — it will be retried next cycle. +- **HTTP call to central fails:** Log error, set `last_sync_error` on Sync Site Config, stop the pull cycle. Retry next tick. +- **Network errors don't advance the watermark** — so no records are missed. + +--- + +## 5. Adapters + +### 5.1 ItemAdapter + +**File:** `pos_next/sync/adapters/item.py` + +- Serializes Item with child tables: Item Barcode, Item Default. +- On apply: standard upsert by name. Handles `has_variants` flag — doesn't delete template items that have local variants referencing them. +- Conflict key: `("name",)` (default). + +### 5.2 ItemPriceAdapter + +**File:** `pos_next/sync/adapters/item_price.py` + +- Standard upsert. +- Conflict key: `("item_code", "price_list", "uom")` — Item Price names are auto-generated and may differ between sites, so identity is by the composite key. +- On apply: look up existing by composite key first. If found, update. If not, insert. + +### 5.3 CustomerAdapter + +**File:** `pos_next/sync/adapters/customer.py` + +- Bidirectional (but in Plan 2 we only implement the pull direction — central→branch). +- Conflict key: `("mobile_no",)`. +- On apply: if a customer with the same `mobile_no` exists under a different name, return existing name (dedup — don't create duplicate). Otherwise standard upsert. + +### 5.4 GenericMasterAdapter + +**File:** `pos_next/sync/adapters/generic_master.py` + +Covers all remaining Central→Branch masters with default `BaseSyncAdapter` behavior (upsert by name, no special logic): + +POS Profile, Warehouse, Mode of Payment, Item Group, UOM, Price List, Company, Currency, Branch, Customer Group, Sales Person, Employee, User, Role Profile, Sales Taxes and Charges Template, Item Tax Template, POS Settings, POS Offer, POS Coupon, Loyalty Program, Item Barcode. + +One class, registered for all these DocTypes at import time. If any later needs custom logic, extract into its own adapter file. + +--- + +## 6. Tombstone Hooks + +**File:** `pos_next/sync/hooks.py` + +Register `on_trash` for every Central→Branch synced DocType: + +```python +def write_tombstone_on_trash(doc, method=None): + """on_trash hook: record deletion for branch replication.""" + from pos_next.sync.registry import get_adapter + if not get_adapter(doc.doctype): + return # not a synced DocType + SyncTombstone.record(doc.doctype, doc.name) +``` + +Registered via `doc_events` in `pos_next/hooks.py`. Only fires on sites where the DocType's adapter is registered (both central and branch — tombstones are useful on both sides for different flows). + +--- + +## 7. Scheduler + +Add to `pos_next/hooks.py` `scheduler_events`: + +```python +scheduler_events = { + "cron": { + "* * * * *": [ + "pos_next.sync.masters_puller.pull_if_due", + ] + } +} +``` + +`pull_if_due` is self-throttled: compares `now() - last_pull_masters_at` against `pull_masters_interval_seconds` from Sync Site Config. On Central sites, it's a no-op (no Branch config exists). + +--- + +## 8. Testing Strategy + +### 8.1 Unit tests + +- `test_changes_api.py` — mock Frappe ORM, verify `changes_since` returns correct upserts/tombstones/pagination. +- `test_masters_puller.py` — mock SyncSession HTTP responses, verify watermark advancement, error handling, skip-on-hash-match. +- `test_item_adapter.py` — verify serialize includes children, apply creates/updates correctly. +- `test_item_price_adapter.py` — verify composite conflict key lookup. +- `test_customer_adapter.py` — verify mobile_no dedup. +- `test_generic_adapter.py` — verify registration covers all expected DocTypes. + +### 8.2 Integration tests (two-bench) + +Using the dev environment (frappe-bench port 8000 as central, frappe-bench-16 port 8001 as branch): + +1. **Happy path:** Create an Item on central → trigger pull on branch → verify Item exists on branch with correct data. +2. **Update propagation:** Update Item name/price on central → pull → verify updated on branch. +3. **Tombstone:** Delete Item on central → pull → verify deleted on branch. +4. **Pagination:** Create 150 Items on central → pull with batch_size=100 → verify all 150 arrive (two pages). +5. **Idempotency:** Pull twice → verify no duplicate records, hash-match skip works. +6. **Customer dedup:** Create Customer with same mobile_no on both sites → pull → verify single record (not duplicated). + +### 8.3 Test runner + +Add a `pos_next/sync/tests/run_plan2_tests.py` that runs all Plan 2 test modules. + +--- + +## 9. End Result + +After Plan 2 is implemented and deployed: + +- Create/edit/delete an Item on central → within `pull_masters_interval_seconds` (default 5 min) → appears/updates/disappears on branch. +- Same for all 23+ master DocTypes in the Synced DocTypes Registry. +- Pull is paginated, idempotent, and resilient to transient network errors. +- Every pull cycle is logged to Sync Log. +- Watermarks track progress per DocType — if the branch goes offline for a day, it catches up on reconnect without missing records. diff --git a/docs/superpowers/specs/2026-04-06-transactions-push-design.md b/docs/superpowers/specs/2026-04-06-transactions-push-design.md new file mode 100644 index 00000000..dbfee2e0 --- /dev/null +++ b/docs/superpowers/specs/2026-04-06-transactions-push-design.md @@ -0,0 +1,275 @@ +# Transactions Push — Sub-Spec (Plan 3) + +**Status:** Approved +**Date:** 2026-04-06 +**Parent Spec:** `docs/superpowers/specs/2026-04-05-branch-central-architecture-design.md` +**Scope:** Outbox hooks, outbox drainer, central ingest API, transaction adapters, scheduler integration. Branch pushes transaction data to central. + +--- + +## 1. Purpose + +Plan 2 delivered the pull direction (central → branch masters). Plan 3 delivers the push direction: branch pushes transaction data to central via the Outbox. After Plan 3, submitting a Sales Invoice on branch will automatically appear on central within 60 seconds as a read-only replica. + +--- + +## 2. Components + +| Component | Location | Purpose | +|-----------|----------|---------| +| Outbox hooks | `pos_next/sync/hooks_outbox.py` | Capture transaction events into Sync Outbox | +| `OutboxDrainer` | `pos_next/sync/outbox_drainer.py` | Branch job: drain pending outbox rows, POST to central | +| Ingest API | `pos_next/sync/api/ingest.py` | Central endpoint: receive and apply pushed transactions | +| Sales Invoice adapter | `pos_next/sync/adapters/sales_invoice.py` | Naming validation, child tables, docstatus-aware insert | +| Payment Entry adapter | `pos_next/sync/adapters/payment_entry.py` | Standard with references child table | +| POS Opening Shift adapter | `pos_next/sync/adapters/pos_opening_shift.py` | Simple upsert, priority 10 | +| POS Closing Shift adapter | `pos_next/sync/adapters/pos_closing_shift.py` | Simple upsert, priority 20 | +| Stock Ledger Entry adapter | `pos_next/sync/adapters/stock_ledger_entry.py` | Insert-only, no updates | +| Scheduler | `pos_next/hooks.py` | `push_if_due` cron every minute | + +**Already built (Plan 1):** Sync Outbox DocType with `enqueue()` + compaction, Sync Dead Letter, Sync History, Sync Log. + +**Not in scope:** POS client failover (separate plan), Sync Status dashboard (already shows outbox stats from Plan 2). + +--- + +## 3. Outbox Hooks — Capturing Transaction Events + +### 3.1 Hook function + +File: `pos_next/sync/hooks_outbox.py` + +A generic doc_event hook that captures document changes into the Sync Outbox: + +```python +def enqueue_to_outbox(doc, method=None): + operation = _method_to_operation(method) + SyncOutbox.enqueue( + reference_doctype=doc.doctype, + reference_name=doc.name, + operation=operation, + payload=json.dumps(to_payload(doc)), + priority=_get_priority(doc.doctype), + ) +``` + +`_method_to_operation` maps Frappe doc_event method names to outbox operations: +- `on_submit` → `"submit"` +- `on_cancel` → `"cancel"` +- `on_update` / `on_update_after_submit` → `"update"` +- `after_insert` → `"insert"` +- `on_trash` → `"delete"` + +`_get_priority` reads from the Sync DocType Rule registry, cached per process. + +### 3.2 Registered events + +| DocType | Events | Why | +|---------|--------|-----| +| Sales Invoice | `on_submit`, `on_cancel`, `on_update_after_submit` | Core transaction | +| Payment Entry | `on_submit`, `on_cancel` | Payment records | +| POS Opening Shift | `on_submit` | Shift lifecycle | +| POS Closing Shift | `on_submit` | Shift lifecycle | +| Stock Ledger Entry | `after_insert` | SLEs are auto-created, never manually submitted | +| Customer | `on_update` | Bidirectional — branch edits push up | + +These are added to `doc_events` in `pos_next/hooks.py`, merged with existing entries. + +### 3.3 Guard: only enqueue on Branch sites + +The hook checks if a Branch Sync Site Config exists and is enabled before enqueueing. On Central sites, the hook is a no-op. + +--- + +## 4. OutboxDrainer — Pushing to Central + +### 4.1 Entry point + +`push_if_due()` — cron every minute, self-throttled by `push_interval_seconds` (default 60s from Sync Site Config). + +### 4.2 Drain cycle + +1. Select outbox rows: `sync_status IN ('pending', 'failed') AND (next_attempt_at IS NULL OR next_attempt_at <= now())`, ordered by `priority ASC, creation ASC`, limit to `batch_size` per DocType. +2. Group rows by `reference_doctype`. +3. For each DocType batch, POST to central's ingest endpoint: + ``` + POST /api/method/pos_next.sync.api.ingest.ingest + Body: {"doctype": "Sales Invoice", "branch_code": "CAI", "records": [...]} + ``` +4. Process central's per-record response: + - `status: "ok"` → set `sync_status='acked'`, `acked_at=now()` + - `status: "error"` → increment attempts, set backoff, record error +5. After `attempts > MAX_ATTEMPTS_BEFORE_DEAD` (10): move row to `Sync Dead Letter`, delete from outbox. +6. Update `last_push_at` on Sync Site Config. +7. Log to `Sync Log`. + +### 4.3 Exponential backoff + +On failure: `next_attempt_at = now() + 2^attempts seconds`. This gives: +- Attempt 1: retry after 2s +- Attempt 2: after 4s +- Attempt 5: after 32s +- Attempt 10: after ~17 minutes (then dead-lettered) + +### 4.4 Dead letter handling + +When a row exceeds `MAX_ATTEMPTS_BEFORE_DEAD`: +1. Copy key fields to `Sync Dead Letter` (reference_doctype, reference_name, operation, last_error, attempts, payload, moved_at). +2. Delete the outbox row. +3. The Sync Status dashboard already shows dead letter count. + +--- + +## 5. Central Ingest API + +### 5.1 Endpoint + +`POST /api/method/pos_next.sync.api.ingest.ingest` + +### 5.2 Request format + +```json +{ + "doctype": "Sales Invoice", + "branch_code": "CAI", + "records": [ + {"operation": "submit", "payload": {"name": "SINV-CAI-001", "sync_uuid": "...", ...}}, + {"operation": "cancel", "payload": {"name": "SINV-CAI-002", "sync_uuid": "...", ...}} + ] +} +``` + +### 5.3 Processing logic per record + +1. **Branch validation:** Verify `branch_code` in request matches the authenticated sync user's configured branch code. +2. **Idempotency check:** If `sync_uuid` exists locally for this DocType, skip (return `status: "ok"` — already processed). +3. **Adapter lookup:** Get adapter for the DocType. +4. **Validate:** Call `adapter.validate_incoming(payload)`. +5. **Apply:** Call `adapter.apply_incoming(payload, operation)`. +6. **Record state:** Update `Sync Record State` with hash and source=branch_code. + +### 5.4 Response format + +```json +{ + "results": [ + {"name": "SINV-CAI-001", "sync_uuid": "...", "status": "ok"}, + {"name": "SINV-CAI-002", "sync_uuid": "...", "status": "error", "error": "Validation failed: ..."} + ] +} +``` + +### 5.5 Security + +- Requires authentication (sync user session). +- `branch_code` in request must match the sync user's branch — prevents cross-branch impersonation. +- Replay protection: `sync_uuid` dedup makes every push idempotent. + +--- + +## 6. Transaction Adapters + +### 6.1 SalesInvoiceAdapter + +File: `pos_next/sync/adapters/sales_invoice.py` + +- **Validate:** Check `origin_branch` is present. Optionally check naming series matches branch code. +- **Apply on central:** Insert as read-only replica with `docstatus=1`. Do NOT call `doc.submit()` — that would trigger GL entries and stock updates on central. Use `_set_sync_flags` + insert with the `docstatus` already set in payload. +- **Child tables:** Include Sales Invoice Item, Sales Taxes and Charges, Payment Schedule. +- **Cancel:** Set `docstatus=2` via `db_update`, don't call `doc.cancel()`. + +### 6.2 PaymentEntryAdapter + +File: `pos_next/sync/adapters/payment_entry.py` + +- Standard adapter. Include Payment Entry Reference child table. +- Same docstatus-aware pattern: insert with `docstatus=1`, cancel with `docstatus=2` via `db_update`. + +### 6.3 POSOpeningShiftAdapter + +File: `pos_next/sync/adapters/pos_opening_shift.py` + +- Simple upsert by name. Priority 10 (synced first so other records can reference the shift). +- Docstatus-aware: insert with `docstatus=1`. + +### 6.4 POSClosingShiftAdapter + +File: `pos_next/sync/adapters/pos_closing_shift.py` + +- Simple upsert. Priority 20. +- Docstatus-aware. + +### 6.5 StockLedgerEntryAdapter + +File: `pos_next/sync/adapters/stock_ledger_entry.py` + +- **Insert-only:** SLEs are never updated after creation. If `sync_uuid` already exists locally, skip. +- SLEs don't have docstatus (they're not submittable). +- Use `db_insert` directly — SLEs should not trigger stock balance recomputation on central. + +### 6.6 Common pattern: docstatus-aware insert + +All submitted-document adapters (Sales Invoice, Payment Entry, POS Opening/Closing Shift) share a common pattern: + +```python +def apply_incoming(self, payload, operation): + if operation == "cancel": + # Set docstatus=2 without triggering cancel hooks + doc = frappe.get_doc(self.doctype, payload["name"]) + doc.docstatus = 2 + doc.db_update() + return doc.name + # For submit: insert with docstatus already set in payload + return super().apply_incoming(payload, operation) +``` + +This is extracted into a `SubmittableAdapter` base class that all transaction adapters inherit from. + +--- + +## 7. Scheduler + +Add to `pos_next/hooks.py` `scheduler_events.cron`: + +```python +"* * * * *": [ + "pos_next.sync.masters_puller.pull_if_due", + "pos_next.sync.outbox_drainer.push_if_due", +] +``` + +Both run every minute, self-throttled by their respective interval settings. + +--- + +## 8. Testing Strategy + +### 8.1 Unit tests + +- `test_hooks_outbox.py` — verify events are captured into outbox with correct operation/priority. +- `test_outbox_drainer.py` — mock HTTP, verify drain cycle, backoff, dead letter. +- `test_ingest_api.py` — verify idempotency, branch validation, per-record response. +- `test_sales_invoice_adapter.py` — verify docstatus-aware insert, cancel handling. +- `test_sle_adapter.py` — verify insert-only behavior, sync_uuid skip. + +### 8.2 Integration test (two-bench) + +1. Submit a Sales Invoice on branch (dev.pos) → trigger push → verify appears on central (pos-dev) with `docstatus=1`. +2. Cancel the invoice on branch → push → verify `docstatus=2` on central. +3. Submit POS Opening Shift → push → verify on central. +4. Idempotency: push same invoice twice → only one record on central. +5. Dead letter: mock central returning errors 11 times → verify outbox row moved to dead letter. + +--- + +## 9. End Result + +After Plan 3: +- Submit Sales Invoice on branch → within 60 seconds → read-only replica on central +- Cancel invoice on branch → reflected on central +- POS shifts synced to central (Opening first, then Closing) +- Payment Entries synced +- Stock Ledger Entries synced (insert-only replicas) +- Customer updates pushed bidirectionally +- Full outbox lifecycle: pending → syncing → acked (or failed → dead letter) +- Combined with Plan 2: **complete bidirectional sync** for all DocTypes in the registry diff --git a/docs/sync/README.md b/docs/sync/README.md new file mode 100644 index 00000000..e5eed973 --- /dev/null +++ b/docs/sync/README.md @@ -0,0 +1,574 @@ +# POS Next Branch-Central Sync System + +## Overview + +POS Next Sync enables **two-way data synchronization** between a central ERPNext server and one or more branch ERPNext servers. This allows each branch to operate independently (even offline) while keeping data consistent across all sites. + +``` + CENTRAL ERPNext (cloud) + Authoritative for master data + Aggregate view of all branches + | + +------------+------------+ + | | + BRANCH (Cairo) BRANCH (Alex) + Local POS backend Local POS backend + Own stock, own GL Own stock, own GL +``` + +### What Gets Synced + +| Direction | What | Examples | +|-----------|------|---------| +| Central --> Branch | **Master data** | Items, Prices, Warehouses, POS Profiles, Users, Customers | +| Branch --> Central | **Transactions** | Sales Invoices, Payments, POS Shifts, Stock Ledger Entries | +| Both ways | **Customers** | New customers created at branch push to central; central edits pull to branch | + +### Key Design Principles + +1. **Branch initiates all communication** — Central is passive. Branches behind NAT/firewall only need outbound HTTPS. +2. **Eventually consistent** — Not real-time. Default intervals: masters pull every 5 minutes, transaction push every 60 seconds. +3. **Idempotent** — Every sync operation can be safely retried. `sync_uuid` on each record prevents duplicates. +4. **Version-agnostic** — The same pos_next codebase runs on both Frappe v15 and v16. A v15 central can sync with a v16 branch. + +--- + +## Glossary + +| Term | Definition | +|------|-----------| +| **Central** | The cloud/HQ ERPNext site. Authoritative source for master data (Items, Prices, etc.). Receives transaction replicas from branches. | +| **Branch** | An on-premise ERPNext site running POS. Creates transactions locally, pulls masters from central. | +| **Branch Code** | Short uppercase identifier for a branch (e.g., `CAI` for Cairo, `ALX` for Alexandria). Encoded in naming series. | +| **Sync Site Config** | The configuration DocType that defines a site's role (Branch/Central), connection settings, and sync rules. | +| **Synced DocTypes Registry** | The child table on Sync Site Config listing which DocTypes to sync, in which direction, with what strategy. | +| **Watermark** | A per-DocType timestamp marking "I've pulled all records up to this point." Used for incremental pull. | +| **Outbox** | A queue of pending changes (submit, cancel, update) waiting to be pushed from branch to central. | +| **Tombstone** | A record of a deletion. When a master is deleted on central, a tombstone tells branches to delete it too. | +| **sync_uuid** | A UUID on every synced transaction record. The global dedup key — prevents the same record from being applied twice. | +| **origin_branch** | The `branch_code` of the site that created a record. Never changes after creation. | +| **Adapter** | A Python class that knows how to serialize, validate, and apply a specific DocType during sync. | +| **Dead Letter** | An outbox row that failed too many times (default: 10). Moved to a separate queue for manual inspection. | +| **Naming Series** | Branch-coded invoice numbering (e.g., `SINV-CAI-.#####`). Set on the POS Profile. Ensures unique names across branches. | + +--- + +## Architecture + +### System Topology + +``` ++-----------------------------------------+ +-----------------------------------------+ +| CENTRAL (e.g., hq.example.com) | | BRANCH (e.g., cairo-store.local) | +| | | | +| Sync Site Config: role=Central | | Sync Site Config: role=Branch | +| | | central_url = https://hq.example.com | +| API Endpoints: | | branch_code = CAI | +| /api/method/pos_next.sync.api. | | | +| changes.changes_since | | Scheduled Jobs (every minute): | +| ingest.ingest | | pull_if_due (masters, every 5 min) | +| health.health | | push_if_due (transactions, every 1m) | +| status.get_sync_status | | | +| | | Outbox: queued transaction changes | +| Tombstone hooks: on_trash for masters | | Watermarks: per-DocType pull progress | ++-----------------------------------------+ +-----------------------------------------+ + ^ | + | HTTPS (branch initiates) | + +--------------------------------------------------+ +``` + +### Data Flow: Masters Pull (Central -> Branch) + +``` +Central Branch + | | + | GET changes_since | + | ?doctype=Item | + | &since=2026-04-05 | + | &limit=100 | + |<-------------------------------| + | | + | {upserts: [...], | + | tombstones: [...], | + | next_since: "...", | + | has_more: true} | + |------------------------------->| + | | + | Apply upserts via adapter + | Delete tombstoned records + | Advance watermark + | Repeat if has_more=true +``` + +**How it works:** +1. The `MastersPuller` runs every minute on the branch (self-throttled to the configured interval, default 5 minutes). +2. It reads the Synced DocTypes Registry for all `Central->Branch` rules, sorted by priority. +3. For each DocType, it calls the central's `changes_since` API with the current watermark. +4. Central returns records modified after the watermark, plus tombstones for deleted records. +5. Branch applies each record through the appropriate adapter, then advances the watermark. +6. If `has_more=true`, it fetches the next page. This continues until all changes are pulled. + +### Data Flow: Transaction Push (Branch -> Central) + +``` +Branch Central + | | + | [Sales Invoice submitted] | + | -> Outbox hook fires | + | -> Row added to Sync Outbox | + | | + | [OutboxDrainer runs] | + | POST ingest | + | {doctype: "Sales Invoice", | + | branch_code: "CAI", | + | records: [{operation, payload}]} + |------------------------------->| + | | + | Check sync_uuid (idempotent) + | Apply via SalesInvoiceAdapter + | Insert as read-only replica + | | + | {results: [{status: "ok"}]} | + |<-------------------------------| + | | + | Mark outbox row as "acked" | +``` + +**How it works:** +1. When a transaction document is submitted/cancelled on the branch, a `doc_event` hook captures it into the Sync Outbox. +2. The `OutboxDrainer` runs every minute, picks up pending outbox rows, groups them by DocType, and POSTs them to central's ingest API. +3. Central receives the batch, checks `sync_uuid` for idempotency, and applies each record via the appropriate adapter. +4. Submitted documents are inserted on central as **read-only replicas** — no `doc.submit()` is called (which would trigger GL entries, stock updates, etc.). +5. Central returns per-record status. Branch marks successful rows as "acked" and increments retry count on failures. +6. After 10 consecutive failures, the row is moved to the Dead Letter queue. + +--- + +## Configuration + +### Setting Up Central + +1. Install POS Next on the central site. +2. Run `bench --site migrate` to create Sync DocTypes. +3. Open **Sync Site Config** in the desk. +4. Set **Site Role** = `Central`, **Branch Code** = a code for the branch you're registering (e.g., `CAI`). +5. Save. The Synced DocTypes Registry will auto-populate with 32 default rules. + +### Setting Up a Branch + +1. Install POS Next on the branch site. +2. Run `bench --site migrate`. +3. Open **Sync Site Config**. +4. Set: + - **Site Role** = `Branch` + - **Branch Code** = e.g., `CAI` + - **Central URL** = `https://your-central-site.com` + - **Sync Username** = a Frappe user on central with the `POS Next Sync Agent` role + - **Sync Password** = that user's password +5. Click **Test Sync Connection** to verify. +6. Save. Sync will begin automatically on the next scheduler tick. + +### Naming Series Convention + +Each branch must use a **branch-coded naming series** for transactions. This is set on the branch's POS Profile: + +| Branch | Sales Invoice Series | Payment Entry Series | +|--------|---------------------|---------------------| +| Cairo Downtown | `SINV-CAI-.#####` | `PE-CAI-.#####` | +| Alexandria Port | `SINV-ALX-.#####` | `PE-ALX-.#####` | +| HQ | `SINV-HQ-.#####` | `PE-HQ-.#####` | + +This ensures: +- No naming collisions between branches +- Every invoice on central can be traced back to its origin branch +- The `SalesInvoiceAdapter` validates that the naming series matches the `origin_branch` + +### Sync Intervals + +| Setting | Default | Where Set | +|---------|---------|-----------| +| Pull Masters Interval | 300 seconds (5 min) | Sync Site Config | +| Push Interval | 60 seconds (1 min) | Sync Site Config | +| Max Retry Attempts | 10 | `pos_next/sync/defaults.py` | + +Intervals can be changed on the Sync Site Config form without restarting the server. + +--- + +## Synced DocTypes Registry + +The registry is a child table on Sync Site Config that controls which DocTypes sync and how. + +### Fields + +| Field | Description | +|-------|-------------| +| **DocType** | The Frappe DocType to sync (e.g., `Item`, `Sales Invoice`) | +| **Direction** | `Central->Branch` (masters), `Branch->Central` (transactions), or `Bidirectional` | +| **CDC Strategy** | `Watermark` (for pull — track by modified timestamp) or `Outbox` (for push — queue changes) | +| **Conflict Rule** | How to resolve conflicts: `Central-Wins`, `Branch-Wins`, `Last-Write-Wins`, `Field-Level-LWW`, or `Manual` | +| **Priority** | Lower number = synced first. POS Opening Shift (10) syncs before Sales Invoice (50). | +| **Batch Size** | Records per API call (default 100) | +| **Enabled** | Toggle sync for this DocType on/off | + +### Default Rules (32 total) + +**Masters (Central -> Branch, Watermark, Central-Wins):** +Item, Item Price, Item Group, Item Barcode, UOM, Price List, POS Profile, POS Settings, POS Offer, POS Coupon, Loyalty Program, Warehouse, Branch, Company, Currency, Mode of Payment, Sales Taxes Template, Item Tax Template, User, Role Profile, Employee, Sales Person, Customer Group + +**Transactions (Branch -> Central, Outbox, Branch-Wins):** +POS Opening Shift (priority 10), POS Closing Shift (20), Sales Invoice (50), Payment Entry (50), Stock Ledger Entry (60), Offline Invoice Sync (70) + +**Bidirectional:** +Customer (Outbox, Field-Level-LWW, priority 50), Wallet (60), Wallet Transaction (60) + +--- + +## Adapters + +Adapters are the per-DocType logic that handles how a record is serialized, validated, and applied during sync. Every synced DocType has an adapter registered in the adapter registry. + +### Adapter Hierarchy + +``` +BaseSyncAdapter — Default: upsert by name, db_update for updates + | + +-- GenericMasterAdapter — No special logic (19 simple masters) + | + +-- ItemAdapter — Child table handling, variant-aware delete + | + +-- ItemPriceAdapter — Composite conflict key (item_code + price_list + uom) + | + +-- CustomerAdapter — mobile_no dedup for bidirectional sync + | + +-- SubmittableAdapter — docstatus-aware insert/cancel (no re-submission) + | + +-- SalesInvoiceAdapter — Naming series validation, child tables + | + +-- PaymentEntryAdapter — Include references child table + | + +-- POSOpeningShiftAdapter — Priority 10 (synced first) + | + +-- POSClosingShiftAdapter — Priority 20 + | + +-- StockLedgerEntryAdapter — Insert-only (SLEs never updated) +``` + +### How Adapters Work + +1. **serialize(doc)** — Convert a Frappe document to a sync payload dict. +2. **validate_incoming(payload)** — Check if the incoming payload is valid (e.g., naming series matches branch). +3. **pre_apply_transform(payload)** — Clean up the payload before applying (strip meta fields, handle child tables). +4. **apply_incoming(payload, operation)** — Create or update the local record. +5. **conflict_key(payload)** — What uniquely identifies this record (default: `name`). + +### Key Patterns + +**db_update for updates:** When updating an existing record, adapters use `doc.db_update()` instead of `doc.save()`. This bypasses all Frappe hooks and validations — synced data was already validated on the source site. This prevents issues like: +- Cross-version method differences (v15 vs v16) +- NestedSet recursion on tree DocTypes (Item Group) +- Link validation failures for records not yet pulled + +**Docstatus-aware insert:** Submitted documents (Sales Invoice, Payment Entry) arrive at central with `docstatus=1`. The `SubmittableAdapter` inserts them directly with the docstatus already set — it never calls `doc.submit()`, which would trigger GL entries and stock updates. Central holds these as **read-only replicas**. + +**sync_uuid dedup:** The ingest API checks if a record with the same `sync_uuid` already exists before applying. This makes every push idempotent — safe to retry after timeouts. + +--- + +## DocTypes Reference + +### Sync Site Config +The main configuration record. Singleton on Branch sites, one-per-branch on Central. + +| Field | Branch | Central | +|-------|--------|---------| +| site_role | "Branch" | "Central" | +| branch_code | e.g., "CAI" | e.g., "CAI" (the branch being registered) | +| central_url | https://hq.example.com | — | +| sync_username | sync user on central | — | +| sync_password | encrypted | — | +| push_interval_seconds | 60 | — | +| pull_masters_interval_seconds | 300 | — | +| pull_failover_interval_seconds | 120 | — | +| synced_doctypes | 32 default rules | 32 default rules | + +### Sync Outbox +Queue of pending changes to push from branch to central. + +| Field | Description | +|-------|-------------| +| reference_doctype | e.g., "Sales Invoice" | +| reference_name | e.g., "SINV-CAI-00001" | +| operation | insert / update / submit / cancel / delete | +| sync_status | pending / syncing / acked / failed / dead | +| payload | Full JSON snapshot of the document | +| priority | From Sync DocType Rule | +| attempts | Number of push attempts | +| next_attempt_at | Exponential backoff: 2^attempts seconds | +| last_error | Error message from last failed attempt | + +**Compaction:** Multiple updates to the same record collapse into one pending row (back-pressure defense). Terminal operations (submit, cancel, delete) always create new rows. + +### Sync Watermark +One row per DocType, tracks pull progress. + +| Field | Description | +|-------|-------------| +| doctype_name | e.g., "Item" | +| last_modified | Max `modified` from the last successful pull | +| last_pulled_at | When the pull happened | +| records_pulled | Count of records in last pull | + +### Sync Tombstone +Records of master deletions on central, so branches can replay the delete. + +### Sync Record State +Per-record tracking: stores the hash of the last synced version. If the hash matches, the record is skipped (no change). + +### Sync Conflict +Manual resolution queue. When `conflict_rule = "Manual"`, both versions are stored here for human review. + +### Sync Log +Append-only log of every sync operation (pull/push) with status, duration, record count, and errors. + +### Sync Dead Letter +Outbox rows that exceeded the max retry count. Awaiting manual inspection and retry. + +### Sync History +Archived acknowledged outbox rows (for audit trail). + +--- + +## API Endpoints + +### `changes_since` (Central) + +``` +GET /api/method/pos_next.sync.api.changes.changes_since + ?doctype=Item + &since=2026-04-05 00:00:00 + &limit=100 +``` + +Returns modified records + tombstones since the given timestamp. Used by `MastersPuller`. + +### `ingest` (Central) + +``` +POST /api/method/pos_next.sync.api.ingest.ingest +Body: { + "doctype": "Sales Invoice", + "branch_code": "CAI", + "records": [{"operation": "submit", "payload": {...}}] +} +``` + +Receives pushed transactions from branches. Returns per-record status. + +### `health` (Central) + +``` +GET /api/method/pos_next.sync.api.health.health +``` + +Public endpoint. Returns server time, Frappe version, POS Next version, site role. Used for connectivity checks. + +### `get_sync_status` (Both) + +``` +GET /api/method/pos_next.sync.api.status.get_sync_status +``` + +Returns dashboard data: outbox stats, watermarks, recent logs, conflict count. + +--- + +## Conflict Resolution + +When the same record is modified on both central and branch, a conflict occurs. The resolution strategy is configured per DocType in the Synced DocTypes Registry. + +| Strategy | Behavior | +|----------|----------| +| **Central-Wins** | Central's version always wins. Used for masters (Items, Prices). | +| **Branch-Wins** | Branch's version always wins. Used for transactions. | +| **Last-Write-Wins** | The version with the newer `modified` timestamp wins. Ties go to incoming. | +| **Field-Level-LWW** | Each field is resolved independently by timestamp. Used for Customers — if central edits the email and branch edits the phone, both changes are kept. | +| **Manual** | Neither version is applied. Both are stored in the Sync Conflict queue for human review. | + +--- + +## Custom Fields + +The sync system adds three custom fields to tracked DocTypes (Sales Invoice, Payment Entry, Stock Ledger Entry, POS Opening Shift, POS Closing Shift, Customer): + +| Field | Type | Purpose | +|-------|------|---------| +| `sync_uuid` | Data (unique) | Cross-site dedup key. Auto-generated UUID4 on creation. | +| `origin_branch` | Data | The `branch_code` of the site that created this record. Never changes. | +| `synced_from_failover` | Check | Set to 1 when central writes a record as a proxy during branch outage (future feature). | + +--- + +## Security + +- **Transport:** HTTPS required for `central_url` (enforced at save time). A `POS_NEXT_SYNC_ALLOW_HTTP=1` env var bypasses this for local development only. +- **Authentication:** Session login (username + password) using a real Frappe User per branch. The `sync_password` is stored using Frappe's Password field type (encrypted at rest). +- **Authorization:** Dedicated `POS Next Sync Agent` role. Sync users should only have this role. +- **Replay protection:** `sync_uuid` dedup prevents the same record from being applied twice. +- **Branch isolation:** The ingest API validates that `branch_code` matches the authenticated user's branch. + +--- + +## Monitoring + +### Sync Status Dashboard + +Open any Sync Site Config record in the desk to see: +- **Last Masters Pull** — when the last pull happened +- **Outbox** — pending, failed, dead letter counts +- **Watermarks** — per-DocType pull progress (collapsible table) +- **Recent Sync Logs** — last 10 operations with status, duration, record count + +### Sync Log + +Navigate to `/app/sync-log` to see the full history of sync operations. + +### Sync Dead Letter + +Navigate to `/app/sync-dead-letter` to see failed outbox rows that need manual attention. + +### Sync Conflict + +Navigate to `/app/sync-conflict` to review and resolve conflicts (when using Manual conflict rule). + +--- + +## Troubleshooting + +### "Test Sync Connection" shows "Network error" + +- Verify `central_url` is correct and reachable from the branch server. +- Check that the sync user exists on central and has the `POS Next Sync Agent` role. +- If using HTTP locally, ensure `POS_NEXT_SYNC_ALLOW_HTTP=1` is set in the environment. + +### Masters not pulling + +1. Check Sync Site Config: is `enabled` checked? Is `pull_masters_interval_seconds` reasonable? +2. Check Sync Log for errors: `/app/sync-log` +3. Check if the scheduler is running: `bench --site scheduler enable` +4. After adding the cron job, run `bench --site migrate` to register it. +5. Restart bench: `bench restart` or `Ctrl+C && bench start` + +### Transactions not pushing + +1. Check Sync Outbox: `/app/sync-outbox` — are rows pending or failed? +2. Check `last_error` on failed rows for the specific error. +3. Check if the central's ingest endpoint is reachable. +4. Dead-lettered rows need manual attention: `/app/sync-dead-letter` + +### Outbox rows stuck as "failed" + +Each failed row has exponential backoff (`next_attempt_at`). It will retry automatically: +- Attempt 1: retry after 2 seconds +- Attempt 5: retry after 32 seconds +- Attempt 10: dead-lettered (~17 minutes total) + +### Cross-version errors + +The sync system uses `db_update()` for updates and `_set_sync_flags()` for inserts to bypass Frappe validations. If you see validation errors during sync, it may be a field that exists on one Frappe version but not the other. Check the Error Log for details. + +--- + +## File Structure + +``` +pos_next/sync/ + __init__.py + defaults.py # Constants: intervals, batch sizes, retry limits + exceptions.py # SyncError hierarchy + payload.py # Serialize, hash, strip meta fields + registry.py # Adapter registry: register/get/list + auth.py # SyncSession: login, session management, auto-relogin + transport.py # Build SyncSession from Sync Site Config + conflict.py # Conflict resolution: 5 strategies + seeds.py # Default Synced DocTypes Registry rules + masters_puller.py # Branch: pull masters from central + outbox_drainer.py # Branch: push transactions to central + hooks.py # Tombstone on_trash hooks + hooks_uuid.py # Auto-fill sync_uuid + origin_branch + hooks_outbox.py # Enqueue transaction events to outbox + adapters/ + base.py # BaseSyncAdapter + _set_sync_flags + submittable.py # SubmittableAdapter: docstatus-aware + generic_master.py # 19 simple masters + item.py # Item: variant-aware + item_price.py # Item Price: composite key + customer.py # Customer: mobile_no dedup + sales_invoice.py # Sales Invoice: naming series validation + payment_entry.py # Payment Entry + pos_opening_shift.py + pos_closing_shift.py + stock_ledger_entry.py # Insert-only + api/ + changes.py # Central: changes_since endpoint + ingest.py # Central: receive pushed transactions + health.py # Public: server info + status.py # Dashboard: sync status summary + tests/ + run_all_tests.py # Plan 1 test runner (11 modules) + run_plan2_tests.py # Plan 2 test runner (6 modules) + run_plan3_tests.py # Plan 3 test runner (4 modules) + ... (21 test modules total) + +pos_next/pos_next/doctype/ + sync_site_config/ # Main config DocType + sync_doctype_rule/ # Child: per-DocType sync rules + sync_sibling_branch/ # Child: read-only branch list + sync_outbox/ # Pending push queue + sync_watermark/ # Pull progress tracking + sync_tombstone/ # Deletion records + sync_record_state/ # Per-record hash tracking + sync_field_timestamp/ # Per-field timestamps (for Field-Level-LWW) + sync_conflict/ # Manual resolution queue + sync_log/ # Operation log + sync_dead_letter/ # Failed push queue + sync_history/ # Archived acknowledged rows +``` + +--- + +## Development Setup + +For development with two local benches: + +``` +frappe-bench (port 8000) = Central (site: pos-central) +frappe-bench-16 (port 8001) = Branch (site: dev.pos) +``` + +### Quick Setup + +```bash +# On frappe-bench (central): +POS_NEXT_SYNC_ALLOW_HTTP=1 bench --site pos-central execute \ + pos_next.sync.tests._setup_multi_site.setup_as_central + +# On frappe-bench-16 (branch): +POS_NEXT_SYNC_ALLOW_HTTP=1 bench --site dev.pos execute \ + pos_next.sync.tests._setup_multi_site.setup_as_branch +``` + +### Running Tests + +```bash +# All Plan 1 tests (foundation): +bench --site pos-dev execute pos_next.sync.tests.run_all_tests.run + +# All Plan 2 tests (masters pull): +bench --site pos-dev execute pos_next.sync.tests.run_plan2_tests.run + +# All Plan 3 tests (transaction push): +bench --site pos-dev execute pos_next.sync.tests.run_plan3_tests.run +``` + +Never use `bench run-tests` — it wipes site data. diff --git a/pos_next/fixtures/role.json b/pos_next/fixtures/role.json index 74984386..d814b3cb 100644 --- a/pos_next/fixtures/role.json +++ b/pos_next/fixtures/role.json @@ -24,5 +24,18 @@ "restrict_to_domain": null, "role_name": "Nexus POS Manager", "two_factor_auth": 0 + }, + { + "desk_access": 0, + "disabled": 0, + "docstatus": 0, + "doctype": "Role", + "home_page": null, + "is_custom": 1, + "modified": "2026-04-06 18:36:41.765664", + "name": "POS Next Sync Agent", + "restrict_to_domain": null, + "role_name": "POS Next Sync Agent", + "two_factor_auth": 0 } -] \ No newline at end of file +] diff --git a/pos_next/hooks.py b/pos_next/hooks.py index 84ba7867..5bd4334a 100644 --- a/pos_next/hooks.py +++ b/pos_next/hooks.py @@ -87,18 +87,18 @@ # Fixtures # -------- fixtures = [ - { - "dt": "Role", - "filters": [ - ["role_name", "in", ["POSNext Cashier","Nexus POS Manager"]] - ] - }, - { - "dt": "Custom DocPerm", - "filters": [ - ["role", "in", ["POSNext Cashier"]] - ] - } + { + "dt": "Role", + "filters": [ + ["role_name", "in", ["POSNext Cashier", "Nexus POS Manager", "POS Next Sync Agent"]] + ] + }, + { + "dt": "Custom DocPerm", + "filters": [ + ["role", "in", ["POSNext Cashier"]] + ] + } ] # Installation @@ -169,18 +169,33 @@ doc_events = { "Item": { - "validate": "pos_next.validations.validate_item" + "validate": "pos_next.validations.validate_item", + "on_trash": "pos_next.sync.hooks.write_tombstone_on_trash", }, "Customer": { + "before_insert": [ + "pos_next.sync.hooks_uuid.set_sync_uuid_if_missing", + "pos_next.sync.hooks_uuid.set_origin_branch_if_missing", + ], "after_insert": [ "pos_next.api.customers.auto_assign_loyalty_program", "pos_next.realtime_events.emit_customer_event", "pos_next.api.wallet.create_wallet_on_customer_insert" ], - "on_update": "pos_next.realtime_events.emit_customer_event", - "on_trash": "pos_next.realtime_events.emit_customer_event" + "on_update": [ + "pos_next.realtime_events.emit_customer_event", + "pos_next.sync.hooks_outbox.enqueue_to_outbox", + ], + "on_trash": [ + "pos_next.realtime_events.emit_customer_event", + "pos_next.sync.hooks.write_tombstone_on_trash", + ], }, "Sales Invoice": { + "before_insert": [ + "pos_next.sync.hooks_uuid.set_sync_uuid_if_missing", + "pos_next.sync.hooks_uuid.set_origin_branch_if_missing", + ], "validate": [ "pos_next.api.sales_invoice_hooks.validate", "pos_next.api.wallet.validate_wallet_payment" @@ -188,23 +203,81 @@ "before_cancel": "pos_next.api.sales_invoice_hooks.before_cancel", "on_submit": [ "pos_next.realtime_events.emit_stock_update_event", - "pos_next.api.wallet.process_loyalty_to_wallet" + "pos_next.api.wallet.process_loyalty_to_wallet", + "pos_next.sync.hooks_outbox.enqueue_to_outbox", ], - "on_cancel": "pos_next.realtime_events.emit_stock_update_event", + "on_cancel": [ + "pos_next.realtime_events.emit_stock_update_event", + "pos_next.sync.hooks_outbox.enqueue_to_outbox", + ], + "on_update_after_submit": "pos_next.sync.hooks_outbox.enqueue_to_outbox", "after_insert": "pos_next.realtime_events.emit_invoice_created_event" }, + "Payment Entry": { + "before_insert": [ + "pos_next.sync.hooks_uuid.set_sync_uuid_if_missing", + "pos_next.sync.hooks_uuid.set_origin_branch_if_missing", + ], + "on_submit": "pos_next.sync.hooks_outbox.enqueue_to_outbox", + "on_cancel": "pos_next.sync.hooks_outbox.enqueue_to_outbox", + }, + "Stock Ledger Entry": { + "before_insert": [ + "pos_next.sync.hooks_uuid.set_sync_uuid_if_missing", + "pos_next.sync.hooks_uuid.set_origin_branch_if_missing", + ], + "after_insert": "pos_next.sync.hooks_outbox.enqueue_to_outbox", + }, + "POS Opening Shift": { + "before_insert": [ + "pos_next.sync.hooks_uuid.set_sync_uuid_if_missing", + "pos_next.sync.hooks_uuid.set_origin_branch_if_missing", + ], + "on_submit": "pos_next.sync.hooks_outbox.enqueue_to_outbox", + }, + "POS Closing Shift": { + "before_insert": [ + "pos_next.sync.hooks_uuid.set_sync_uuid_if_missing", + "pos_next.sync.hooks_uuid.set_origin_branch_if_missing", + ], + "on_submit": "pos_next.sync.hooks_outbox.enqueue_to_outbox", + }, "POS Profile": { - "on_update": "pos_next.realtime_events.emit_pos_profile_updated_event" + "on_update": "pos_next.realtime_events.emit_pos_profile_updated_event", + "on_trash": "pos_next.sync.hooks.write_tombstone_on_trash", }, "Promotional Scheme": { "on_update": "pos_next.overrides.pricing_rule.sync_pos_only_to_pricing_rules" - } + }, + # Sync tombstone hooks for synced masters + "Item Price": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Item Group": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Item Barcode": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "UOM": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Price List": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Warehouse": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Mode of Payment": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Company": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Currency": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Branch": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Customer Group": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Sales Person": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Employee": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Sales Taxes and Charges Template": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Item Tax Template": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, + "Loyalty Program": {"on_trash": "pos_next.sync.hooks.write_tombstone_on_trash"}, } # Scheduled Tasks # --------------- scheduler_events = { + "cron": { + "* * * * *": [ + "pos_next.sync.masters_puller.pull_if_due", + "pos_next.sync.outbox_drainer.push_if_due", + ] + }, "hourly": [ "pos_next.tasks.branding_monitor.monitor_branding_integrity", ], diff --git a/pos_next/patches.txt b/pos_next/patches.txt index 6c51d983..594067fd 100644 --- a/pos_next/patches.txt +++ b/pos_next/patches.txt @@ -4,4 +4,7 @@ [post_model_sync] # Patches added in this section will be executed after doctypes are migrated -pos_next.patches.v1_7_0.reinstall_workspace \ No newline at end of file +pos_next.patches.v1_7_0.reinstall_workspace +pos_next.patches.v2_0_0.add_sync_custom_fields +pos_next.patches.v2_0_0.backfill_sync_uuid +pos_next.patches.v2_0_0.create_sync_agent_role \ No newline at end of file diff --git a/pos_next/patches/v2_0_0/add_sync_custom_fields.py b/pos_next/patches/v2_0_0/add_sync_custom_fields.py new file mode 100644 index 00000000..3fc75f98 --- /dev/null +++ b/pos_next/patches/v2_0_0/add_sync_custom_fields.py @@ -0,0 +1,54 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Install sync_uuid, origin_branch, synced_from_failover custom fields.""" + +import frappe +from frappe.custom.doctype.custom_field.custom_field import create_custom_fields + + +TARGET_DOCTYPES = [ + "Sales Invoice", + "Payment Entry", + "Stock Ledger Entry", + "POS Opening Shift", + "POS Closing Shift", + "Customer", +] + + +def execute(): + fields_per_doctype = {} + for dt in TARGET_DOCTYPES: + fields_per_doctype[dt] = [ + { + "fieldname": "sync_uuid", + "label": "Sync UUID", + "fieldtype": "Data", + "unique": 1, + "read_only": 1, + "no_copy": 1, + "description": "Cross-site dedup key; set at creation", + "insert_after": "name" if dt == "Customer" else None, + }, + { + "fieldname": "origin_branch", + "label": "Origin Branch", + "fieldtype": "Data", + "read_only": 1, + "no_copy": 1, + "description": "branch_code of the site that originated this record", + }, + { + "fieldname": "synced_from_failover", + "label": "Synced From Failover", + "fieldtype": "Check", + "read_only": 1, + "no_copy": 1, + "default": "0", + "description": "1 when central wrote this record as a failover proxy for a branch", + }, + ] + create_custom_fields(fields_per_doctype, update=True) + frappe.db.commit() + print(f"Installed sync custom fields on {len(TARGET_DOCTYPES)} doctypes") diff --git a/pos_next/patches/v2_0_0/backfill_sync_uuid.py b/pos_next/patches/v2_0_0/backfill_sync_uuid.py new file mode 100644 index 00000000..50f5b63a --- /dev/null +++ b/pos_next/patches/v2_0_0/backfill_sync_uuid.py @@ -0,0 +1,57 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Backfill sync_uuid on existing rows in sync-tracked doctypes. Idempotent.""" + +import uuid + +import frappe + + +TARGET_DOCTYPES = [ + "Sales Invoice", + "Payment Entry", + "Stock Ledger Entry", + "POS Opening Shift", + "POS Closing Shift", + "Customer", +] + +BATCH_SIZE = 500 + + +def execute(): + total_updated = 0 + for dt in TARGET_DOCTYPES: + updated = _backfill_doctype(dt) + total_updated += updated + print(f"Backfilled sync_uuid: {dt} — {updated} rows") + print(f"Total rows backfilled: {total_updated}") + frappe.db.commit() + + +def _backfill_doctype(doctype_name): + """Fill sync_uuid where NULL or empty, in batches.""" + updated = 0 + while True: + rows = frappe.db.sql( + f""" + SELECT name FROM `tab{doctype_name}` + WHERE sync_uuid IS NULL OR sync_uuid = '' + LIMIT {BATCH_SIZE} + """, + as_dict=True, + ) + if not rows: + break + for row in rows: + new_uuid = str(uuid.uuid4()) + frappe.db.sql( + f"UPDATE `tab{doctype_name}` SET sync_uuid = %s WHERE name = %s", + (new_uuid, row.name), + ) + frappe.db.commit() + updated += len(rows) + if len(rows) < BATCH_SIZE: + break + return updated diff --git a/pos_next/patches/v2_0_0/create_sync_agent_role.py b/pos_next/patches/v2_0_0/create_sync_agent_role.py new file mode 100644 index 00000000..ebbc3b15 --- /dev/null +++ b/pos_next/patches/v2_0_0/create_sync_agent_role.py @@ -0,0 +1,24 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Create the POS Next Sync Agent role.""" + +import frappe + + +ROLE_NAME = "POS Next Sync Agent" + + +def execute(): + if not frappe.db.exists("Role", ROLE_NAME): + role = frappe.get_doc({ + "doctype": "Role", + "role_name": ROLE_NAME, + "desk_access": 0, + "is_custom": 1, + }) + role.insert(ignore_permissions=True) + print(f"Created role: {ROLE_NAME}") + else: + print(f"Role already exists: {ROLE_NAME}") + frappe.db.commit() diff --git a/pos_next/pos_next/custom/customer.json b/pos_next/pos_next/custom/customer.json new file mode 100644 index 00000000..cb883426 --- /dev/null +++ b/pos_next/pos_next/custom/customer.json @@ -0,0 +1,301 @@ +{ + "custom_fields": [ + { + "_assign": null, + "_comments": null, + "_liked_by": null, + "_user_tags": null, + "allow_in_quick_entry": 0, + "allow_on_submit": 0, + "bold": 0, + "collapsible": 0, + "collapsible_depends_on": null, + "columns": 0, + "creation": "2026-04-12 14:59:37.608365", + "default": null, + "depends_on": null, + "description": "branch_code of the site that originated this record", + "docstatus": 0, + "dt": "Customer", + "fetch_from": null, + "fetch_if_empty": 0, + "fieldname": "origin_branch", + "fieldtype": "Data", + "hidden": 0, + "hide_border": 0, + "hide_days": 0, + "hide_seconds": 0, + "idx": 0, + "ignore_user_permissions": 0, + "ignore_xss_filter": 0, + "in_global_search": 0, + "in_list_view": 0, + "in_preview": 0, + "in_standard_filter": 0, + "insert_after": null, + "is_system_generated": 1, + "is_virtual": 0, + "label": "Origin Branch", + "length": 0, + "link_filters": null, + "mandatory_depends_on": null, + "modified": "2026-04-06 18:35:20.679363", + "modified_by": "Administrator", + "module": null, + "name": "Customer-origin_branch", + "no_copy": 1, + "non_negative": 0, + "options": null, + "owner": "Administrator", + "permlevel": 0, + "placeholder": null, + "precision": "", + "print_hide": 0, + "print_hide_if_no_value": 0, + "print_width": null, + "read_only": 1, + "read_only_depends_on": null, + "report_hide": 0, + "reqd": 0, + "search_index": 0, + "show_dashboard": 0, + "sort_options": 0, + "translatable": 0, + "unique": 0, + "width": null + }, + { + "_assign": null, + "_comments": null, + "_liked_by": null, + "_user_tags": null, + "allow_in_quick_entry": 0, + "allow_on_submit": 0, + "bold": 0, + "collapsible": 0, + "collapsible_depends_on": null, + "columns": 0, + "creation": "2026-04-12 14:59:37.493556", + "default": null, + "depends_on": null, + "description": "Cross-site dedup key; set at creation", + "docstatus": 0, + "dt": "Customer", + "fetch_from": null, + "fetch_if_empty": 0, + "fieldname": "sync_uuid", + "fieldtype": "Data", + "hidden": 0, + "hide_border": 0, + "hide_days": 0, + "hide_seconds": 0, + "idx": 0, + "ignore_user_permissions": 0, + "ignore_xss_filter": 0, + "in_global_search": 0, + "in_list_view": 0, + "in_preview": 0, + "in_standard_filter": 0, + "insert_after": "name", + "is_system_generated": 1, + "is_virtual": 0, + "label": "Sync UUID", + "length": 0, + "link_filters": null, + "mandatory_depends_on": null, + "modified": "2026-04-06 18:35:20.634429", + "modified_by": "Administrator", + "module": null, + "name": "Customer-sync_uuid", + "no_copy": 1, + "non_negative": 0, + "options": null, + "owner": "Administrator", + "permlevel": 0, + "placeholder": null, + "precision": "", + "print_hide": 0, + "print_hide_if_no_value": 0, + "print_width": null, + "read_only": 1, + "read_only_depends_on": null, + "report_hide": 0, + "reqd": 0, + "search_index": 0, + "show_dashboard": 0, + "sort_options": 0, + "translatable": 0, + "unique": 1, + "width": null + }, + { + "_assign": null, + "_comments": null, + "_liked_by": null, + "_user_tags": null, + "allow_in_quick_entry": 0, + "allow_on_submit": 0, + "bold": 0, + "collapsible": 0, + "collapsible_depends_on": null, + "columns": 0, + "creation": "2026-04-12 14:59:37.692020", + "default": "0", + "depends_on": null, + "description": "1 when central wrote this record as a failover proxy for a branch", + "docstatus": 0, + "dt": "Customer", + "fetch_from": null, + "fetch_if_empty": 0, + "fieldname": "synced_from_failover", + "fieldtype": "Check", + "hidden": 0, + "hide_border": 0, + "hide_days": 0, + "hide_seconds": 0, + "idx": 0, + "ignore_user_permissions": 0, + "ignore_xss_filter": 0, + "in_global_search": 0, + "in_list_view": 0, + "in_preview": 0, + "in_standard_filter": 0, + "insert_after": null, + "is_system_generated": 1, + "is_virtual": 0, + "label": "Synced From Failover", + "length": 0, + "link_filters": null, + "mandatory_depends_on": null, + "modified": "2026-04-06 18:35:20.721977", + "modified_by": "Administrator", + "module": null, + "name": "Customer-synced_from_failover", + "no_copy": 1, + "non_negative": 0, + "options": null, + "owner": "Administrator", + "permlevel": 0, + "placeholder": null, + "precision": "", + "print_hide": 0, + "print_hide_if_no_value": 0, + "print_width": null, + "read_only": 1, + "read_only_depends_on": null, + "report_hide": 0, + "reqd": 0, + "search_index": 0, + "show_dashboard": 0, + "sort_options": 0, + "translatable": 0, + "unique": 0, + "width": null + } + ], + "custom_perms": [ + { + "_assign": null, + "_comments": null, + "_liked_by": null, + "_user_tags": null, + "amend": 0, + "cancel": 0, + "create": 1, + "creation": "2026-04-12 14:59:35.091076", + "delete": 0, + "docstatus": 0, + "email": 0, + "export": 1, + "idx": 0, + "if_owner": 0, + "import": 0, + "modified": "2025-12-28 12:00:00", + "modified_by": "Administrator", + "name": "customer_perm_posnext", + "owner": "Administrator", + "parent": "Customer", + "permlevel": 0, + "print": 1, + "read": 1, + "report": 1, + "role": "POSNext Cashier", + "select": 1, + "share": 0, + "submit": 0, + "write": 1 + } + ], + "doctype": "Customer", + "links": [ + { + "creation": "2013-06-11 14:26:44", + "custom": 0, + "docstatus": 0, + "group": "Allowed Items", + "hidden": 0, + "idx": 1, + "is_child_table": 0, + "link_doctype": "Party Specific Item", + "link_fieldname": "party", + "modified": "2026-01-22 17:25:20.668834", + "modified_by": "Administrator", + "name": "8cm5usms1e", + "owner": "Administrator", + "parent": "Customer", + "parent_doctype": null, + "parentfield": "links", + "parenttype": "DocType", + "table_fieldname": null + } + ], + "property_setters": [ + { + "_assign": null, + "_comments": null, + "_liked_by": null, + "_user_tags": null, + "creation": "2026-01-22 14:02:30.642162", + "default_value": null, + "doc_type": "Customer", + "docstatus": 0, + "doctype_or_field": "DocField", + "field_name": "naming_series", + "idx": 0, + "is_system_generated": 1, + "modified": "2026-01-22 14:02:30.642162", + "modified_by": "Administrator", + "module": null, + "name": "Customer-naming_series-hidden", + "owner": "Administrator", + "property": "hidden", + "property_type": "Check", + "row_name": null, + "value": "1" + }, + { + "_assign": null, + "_comments": null, + "_liked_by": null, + "_user_tags": null, + "creation": "2026-01-22 14:02:30.536039", + "default_value": null, + "doc_type": "Customer", + "docstatus": 0, + "doctype_or_field": "DocField", + "field_name": "naming_series", + "idx": 0, + "is_system_generated": 1, + "modified": "2026-01-22 14:02:30.536039", + "modified_by": "Administrator", + "module": null, + "name": "Customer-naming_series-reqd", + "owner": "Administrator", + "property": "reqd", + "property_type": "Check", + "row_name": null, + "value": "0" + } + ], + "sync_on_migrate": 1 +} \ No newline at end of file diff --git a/pos_next/pos_next/custom/payment_entry.json b/pos_next/pos_next/custom/payment_entry.json new file mode 100644 index 00000000..238311bd --- /dev/null +++ b/pos_next/pos_next/custom/payment_entry.json @@ -0,0 +1,222 @@ +{ + "custom_fields": [ + { + "_assign": null, + "_comments": null, + "_liked_by": null, + "_user_tags": null, + "allow_in_quick_entry": 0, + "allow_on_submit": 0, + "bold": 0, + "collapsible": 0, + "collapsible_depends_on": null, + "columns": 0, + "creation": "2026-04-12 14:59:36.630264", + "default": null, + "depends_on": null, + "description": "branch_code of the site that originated this record", + "docstatus": 0, + "dt": "Payment Entry", + "fetch_from": null, + "fetch_if_empty": 0, + "fieldname": "origin_branch", + "fieldtype": "Data", + "hidden": 0, + "hide_border": 0, + "hide_days": 0, + "hide_seconds": 0, + "idx": 0, + "ignore_user_permissions": 0, + "ignore_xss_filter": 0, + "in_global_search": 0, + "in_list_view": 0, + "in_preview": 0, + "in_standard_filter": 0, + "insert_after": null, + 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UUID", + "length": 0, + "link_filters": null, + "mandatory_depends_on": null, + "modified": "2026-04-06 18:35:19.914515", + "modified_by": "Administrator", + "module": null, + "name": "Sales Invoice-sync_uuid", + "no_copy": 1, + "non_negative": 0, + "options": null, + "owner": "Administrator", + "permlevel": 0, + "placeholder": null, + "precision": "", + "print_hide": 0, + "print_hide_if_no_value": 0, + "print_width": null, + "read_only": 1, + "read_only_depends_on": null, + "report_hide": 0, + "reqd": 0, + "search_index": 0, + "show_dashboard": 0, + "sort_options": 0, + "translatable": 0, + "unique": 1, + "width": null + }, + { + "_assign": null, + "_comments": null, + "_liked_by": null, + "_user_tags": null, + "allow_in_quick_entry": 0, + "allow_on_submit": 0, + "bold": 0, + "collapsible": 0, + "collapsible_depends_on": null, + "columns": 0, + "creation": "2026-04-12 14:59:36.428976", + "default": "0", + "depends_on": null, + "description": "1 when central wrote this record as a failover proxy for a branch", + "docstatus": 0, + "dt": "Sales Invoice", + "fetch_from": null, + "fetch_if_empty": 0, + "fieldname": "synced_from_failover", + "fieldtype": "Check", + "hidden": 0, + "hide_border": 0, + "hide_days": 0, + "hide_seconds": 0, + "idx": 0, + "ignore_user_permissions": 0, + "ignore_xss_filter": 0, + "in_global_search": 0, + "in_list_view": 0, + "in_preview": 0, + "in_standard_filter": 0, + "insert_after": null, + "is_system_generated": 1, + "is_virtual": 0, + "label": "Synced From Failover", + "length": 0, + "link_filters": null, + "mandatory_depends_on": null, + "modified": "2026-04-06 18:35:20.093039", + "modified_by": "Administrator", + "module": null, + "name": "Sales Invoice-synced_from_failover", + "no_copy": 1, + "non_negative": 0, + "options": null, + "owner": "Administrator", + "permlevel": 0, + "placeholder": null, + "precision": "", + "print_hide": 0, + "print_hide_if_no_value": 0, + "print_width": null, + "read_only": 1, + "read_only_depends_on": null, + "report_hide": 0, + "reqd": 0, + "search_index": 0, + "show_dashboard": 0, + "sort_options": 0, + "translatable": 0, + "unique": 0, + "width": null } ], "custom_perms": [], diff --git a/pos_next/pos_next/custom/stock_ledger_entry.json b/pos_next/pos_next/custom/stock_ledger_entry.json new file mode 100644 index 00000000..2cf390c4 --- /dev/null +++ b/pos_next/pos_next/custom/stock_ledger_entry.json @@ -0,0 +1,201 @@ +{ + "custom_fields": [ + { + "_assign": null, + "_comments": null, + "_liked_by": null, + "_user_tags": null, + "allow_in_quick_entry": 0, + "allow_on_submit": 0, + "bold": 0, + "collapsible": 0, + "collapsible_depends_on": null, + "columns": 0, + "creation": "2026-04-12 14:59:36.866469", + "default": null, + "depends_on": null, + "description": "branch_code of the site that originated this record", + "docstatus": 0, + "dt": "Stock Ledger Entry", + "fetch_from": null, + "fetch_if_empty": 0, + "fieldname": "origin_branch", + "fieldtype": "Data", + "hidden": 0, + "hide_border": 0, + "hide_days": 0, + "hide_seconds": 0, + "idx": 0, + "ignore_user_permissions": 0, + "ignore_xss_filter": 0, + "in_global_search": 0, + "in_list_view": 0, + "in_preview": 0, + "in_standard_filter": 0, + "insert_after": null, + "is_system_generated": 1, + "is_virtual": 0, + "label": "Origin Branch", + "length": 0, + "link_filters": null, + "mandatory_depends_on": null, + "modified": "2026-04-06 18:35:20.346678", + "modified_by": "Administrator", + "module": null, + "name": "Stock Ledger Entry-origin_branch", + "no_copy": 1, + "non_negative": 0, + "options": null, + "owner": "Administrator", + "permlevel": 0, + "placeholder": null, + "precision": "", + "print_hide": 0, + "print_hide_if_no_value": 0, + "print_width": null, + "read_only": 1, + "read_only_depends_on": null, + "report_hide": 0, + "reqd": 0, + "search_index": 0, + "show_dashboard": 0, + "sort_options": 0, + "translatable": 0, + "unique": 0, + "width": null + }, + { + "_assign": null, + "_comments": null, + "_liked_by": null, + "_user_tags": null, + "allow_in_quick_entry": 0, + "allow_on_submit": 0, + "bold": 0, + "collapsible": 0, + "collapsible_depends_on": null, + "columns": 0, + "creation": "2026-04-12 14:59:36.796301", + "default": null, + "depends_on": null, + "description": "Cross-site dedup key; set at creation", + "docstatus": 0, + "dt": "Stock Ledger Entry", + "fetch_from": null, + "fetch_if_empty": 0, + "fieldname": "sync_uuid", + "fieldtype": "Data", + "hidden": 0, + "hide_border": 0, + "hide_days": 0, + "hide_seconds": 0, + "idx": 0, + "ignore_user_permissions": 0, + "ignore_xss_filter": 0, + "in_global_search": 0, + "in_list_view": 0, + "in_preview": 0, + "in_standard_filter": 0, + "insert_after": null, + "is_system_generated": 1, + "is_virtual": 0, + "label": "Sync UUID", + "length": 0, + "link_filters": null, + "mandatory_depends_on": null, + "modified": "2026-04-06 18:35:20.309802", + "modified_by": "Administrator", + "module": null, + "name": "Stock Ledger Entry-sync_uuid", + "no_copy": 1, + "non_negative": 0, + "options": null, + "owner": "Administrator", + "permlevel": 0, + "placeholder": null, + "precision": "", + "print_hide": 0, + "print_hide_if_no_value": 0, + "print_width": null, + "read_only": 1, + "read_only_depends_on": null, + "report_hide": 0, + "reqd": 0, + "search_index": 0, + "show_dashboard": 0, + "sort_options": 0, + "translatable": 0, + "unique": 1, + "width": null + }, + { + "_assign": null, + "_comments": null, + "_liked_by": null, + "_user_tags": null, + "allow_in_quick_entry": 0, + "allow_on_submit": 0, + "bold": 0, + "collapsible": 0, + "collapsible_depends_on": null, + "columns": 0, + "creation": "2026-04-12 14:59:36.935182", + "default": "0", + "depends_on": null, + "description": "1 when central wrote this record as a failover proxy for a branch", + "docstatus": 0, + "dt": "Stock Ledger Entry", + "fetch_from": null, + "fetch_if_empty": 0, + "fieldname": "synced_from_failover", + "fieldtype": "Check", + "hidden": 0, + "hide_border": 0, + "hide_days": 0, + "hide_seconds": 0, + "idx": 0, + "ignore_user_permissions": 0, + "ignore_xss_filter": 0, + "in_global_search": 0, + "in_list_view": 0, + "in_preview": 0, + "in_standard_filter": 0, + "insert_after": null, + "is_system_generated": 1, + "is_virtual": 0, + "label": "Synced From Failover", + "length": 0, + "link_filters": null, + "mandatory_depends_on": null, + "modified": "2026-04-06 18:35:20.384827", + "modified_by": "Administrator", + "module": null, + "name": "Stock Ledger Entry-synced_from_failover", + "no_copy": 1, + "non_negative": 0, + "options": null, + "owner": "Administrator", + "permlevel": 0, + "placeholder": null, + "precision": "", + "print_hide": 0, + "print_hide_if_no_value": 0, + "print_width": null, + "read_only": 1, + "read_only_depends_on": null, + "report_hide": 0, + "reqd": 0, + "search_index": 0, + "show_dashboard": 0, + "sort_options": 0, + "translatable": 0, + "unique": 0, + "width": null + } + ], + "custom_perms": [], + "doctype": "Stock Ledger Entry", + "links": [], + "property_setters": [], + "sync_on_migrate": 1 +} \ No newline at end of file diff --git a/pos_next/pos_next/doctype/sync_conflict/__init__.py b/pos_next/pos_next/doctype/sync_conflict/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/pos_next/doctype/sync_conflict/sync_conflict.json b/pos_next/pos_next/doctype/sync_conflict/sync_conflict.json new file mode 100644 index 00000000..11b6dbb4 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_conflict/sync_conflict.json @@ -0,0 +1,24 @@ +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": ["reference_doctype", "reference_name", "status", "incoming_from", "detected_at", "local_payload", "incoming_payload", "resolved_by", "resolution_notes"], + "fields": [ + {"fieldname": "reference_doctype", "fieldtype": "Link", "in_list_view": 1, "label": "Reference DocType", "options": "DocType", "reqd": 1}, + {"fieldname": "reference_name", "fieldtype": "Data", "in_list_view": 1, "label": "Reference Name", "reqd": 1}, + {"fieldname": "status", "fieldtype": "Select", "in_list_view": 1, "label": "Status", "options": "pending\nresolved_local\nresolved_incoming\nresolved_merged", "default": "pending"}, + {"fieldname": "incoming_from", "fieldtype": "Data", "in_list_view": 1, "label": "Incoming From"}, + {"fieldname": "detected_at", "fieldtype": "Datetime", "label": "Detected At"}, + {"fieldname": "local_payload", "fieldtype": "Long Text", "label": "Local Payload"}, + {"fieldname": "incoming_payload", "fieldtype": "Long Text", "label": "Incoming Payload"}, + {"fieldname": "resolved_by", "fieldtype": "Link", "label": "Resolved By", "options": "User"}, + {"fieldname": "resolution_notes", "fieldtype": "Text", "label": "Resolution Notes"} + ], + "index_web_pages_for_search": 0, "links": [], + "modified": "2026-04-05 00:00:00", "modified_by": "Administrator", + "module": "POS Next", "name": "Sync Conflict", "owner": "Administrator", + "permissions": [{"create": 1, "delete": 1, "read": 1, "report": 1, "role": "System Manager", "write": 1}], + "row_format": "Dynamic", "sort_field": "detected_at", "sort_order": "DESC", "states": [], "track_changes": 1 +} diff --git a/pos_next/pos_next/doctype/sync_conflict/sync_conflict.py b/pos_next/pos_next/doctype/sync_conflict/sync_conflict.py new file mode 100644 index 00000000..abc69654 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_conflict/sync_conflict.py @@ -0,0 +1,9 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from frappe.model.document import Document + + +class SyncConflict(Document): + """Manual-resolution queue entry for sync conflicts.""" + pass diff --git a/pos_next/pos_next/doctype/sync_dead_letter/__init__.py b/pos_next/pos_next/doctype/sync_dead_letter/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/pos_next/doctype/sync_dead_letter/sync_dead_letter.json b/pos_next/pos_next/doctype/sync_dead_letter/sync_dead_letter.json new file mode 100644 index 00000000..9b1b5cce --- /dev/null +++ b/pos_next/pos_next/doctype/sync_dead_letter/sync_dead_letter.json @@ -0,0 +1,22 @@ +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": ["reference_doctype", "reference_name", "operation", "last_error", "attempts", "payload", "moved_at"], + "fields": [ + {"fieldname": "reference_doctype", "fieldtype": "Link", "in_list_view": 1, "label": "Reference DocType", "options": "DocType"}, + {"fieldname": "reference_name", "fieldtype": "Data", "in_list_view": 1, "label": "Reference Name"}, + {"fieldname": "operation", "fieldtype": "Data", "in_list_view": 1, "label": "Operation"}, + {"fieldname": "last_error", "fieldtype": "Small Text", "label": "Last Error"}, + {"fieldname": "attempts", "fieldtype": "Int", "label": "Attempts"}, + {"fieldname": "payload", "fieldtype": "Long Text", "label": "Payload"}, + {"fieldname": "moved_at", "fieldtype": "Datetime", "label": "Moved At"} + ], + "index_web_pages_for_search": 0, "links": [], + "modified": "2026-04-05 00:00:00", "modified_by": "Administrator", + "module": "POS Next", "name": "Sync Dead Letter", "owner": "Administrator", + "permissions": [{"create": 1, "delete": 1, "read": 1, "report": 1, "role": "System Manager", "write": 1}], + "row_format": "Dynamic", "sort_field": "moved_at", "sort_order": "DESC", "states": [], "track_changes": 0 +} diff --git a/pos_next/pos_next/doctype/sync_dead_letter/sync_dead_letter.py b/pos_next/pos_next/doctype/sync_dead_letter/sync_dead_letter.py new file mode 100644 index 00000000..2611427e --- /dev/null +++ b/pos_next/pos_next/doctype/sync_dead_letter/sync_dead_letter.py @@ -0,0 +1,9 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from frappe.model.document import Document + + +class SyncDeadLetter(Document): + """Outbox rows that exceeded max retries; awaiting human handling.""" + pass diff --git a/pos_next/pos_next/doctype/sync_doctype_rule/__init__.py b/pos_next/pos_next/doctype/sync_doctype_rule/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/pos_next/doctype/sync_doctype_rule/sync_doctype_rule.json b/pos_next/pos_next/doctype/sync_doctype_rule/sync_doctype_rule.json new file mode 100644 index 00000000..87298210 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_doctype_rule/sync_doctype_rule.json @@ -0,0 +1,81 @@ +{ + "actions": [], + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "doctype_name", + "direction", + "cdc_strategy", + "conflict_rule", + "priority", + "batch_size", + "enabled" + ], + "fields": [ + { + "fieldname": "doctype_name", + "fieldtype": "Link", + "in_list_view": 1, + "label": "DocType", + "options": "DocType", + "reqd": 1 + }, + { + "fieldname": "direction", + "fieldtype": "Select", + "in_list_view": 1, + "label": "Direction", + "options": "Central→Branch\nBranch→Central\nBidirectional", + "reqd": 1 + }, + { + "fieldname": "cdc_strategy", + "fieldtype": "Select", + "in_list_view": 1, + "label": "CDC Strategy", + "options": "Outbox\nWatermark", + "reqd": 1 + }, + { + "fieldname": "conflict_rule", + "fieldtype": "Select", + "label": "Conflict Rule", + "options": "Last-Write-Wins\nCentral-Wins\nBranch-Wins\nField-Level-LWW\nManual", + "reqd": 1 + }, + { + "default": "100", + "fieldname": "priority", + "fieldtype": "Int", + "in_list_view": 1, + "label": "Priority" + }, + { + "default": "100", + "fieldname": "batch_size", + "fieldtype": "Int", + "label": "Batch Size" + }, + { + "default": "1", + "fieldname": "enabled", + "fieldtype": "Check", + "in_list_view": 1, + "label": "Enabled" + } + ], + "index_web_pages_for_search": 0, + "istable": 1, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync DocType Rule", + "owner": "Administrator", + "permissions": [], + "sort_field": "priority", + "sort_order": "ASC", + "states": [], + "track_changes": 0 +} diff --git a/pos_next/pos_next/doctype/sync_doctype_rule/sync_doctype_rule.py b/pos_next/pos_next/doctype/sync_doctype_rule/sync_doctype_rule.py new file mode 100644 index 00000000..bfc56ac6 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_doctype_rule/sync_doctype_rule.py @@ -0,0 +1,9 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from frappe.model.document import Document + + +class SyncDocTypeRule(Document): + """Child table row describing how one DocType participates in sync.""" + pass diff --git a/pos_next/pos_next/doctype/sync_field_timestamp/__init__.py b/pos_next/pos_next/doctype/sync_field_timestamp/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/pos_next/doctype/sync_field_timestamp/sync_field_timestamp.json b/pos_next/pos_next/doctype/sync_field_timestamp/sync_field_timestamp.json new file mode 100644 index 00000000..3f0e2920 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_field_timestamp/sync_field_timestamp.json @@ -0,0 +1,19 @@ +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": ["reference_doctype", "reference_name", "fieldname", "modified_at"], + "fields": [ + {"fieldname": "reference_doctype", "fieldtype": "Link", "label": "Reference DocType", "options": "DocType", "reqd": 1}, + {"fieldname": "reference_name", "fieldtype": "Data", "label": "Reference Name", "reqd": 1}, + {"fieldname": "fieldname", "fieldtype": "Data", "label": "Fieldname", "reqd": 1}, + {"fieldname": "modified_at", "fieldtype": "Datetime", "label": "Modified At", "reqd": 1} + ], + "index_web_pages_for_search": 0, "links": [], + "modified": "2026-04-05 00:00:00", "modified_by": "Administrator", + "module": "POS Next", "name": "Sync Field Timestamp", "owner": "Administrator", + "permissions": [{"create": 1, "delete": 1, "read": 1, "role": "System Manager", "write": 1}], + "row_format": "Dynamic", "sort_field": "modified", "sort_order": "DESC", "states": [], "track_changes": 0 +} diff --git a/pos_next/pos_next/doctype/sync_field_timestamp/sync_field_timestamp.py b/pos_next/pos_next/doctype/sync_field_timestamp/sync_field_timestamp.py new file mode 100644 index 00000000..15b68190 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_field_timestamp/sync_field_timestamp.py @@ -0,0 +1,9 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from frappe.model.document import Document + + +class SyncFieldTimestamp(Document): + """Per-field modification timestamp for Field-Level-LWW conflict resolution.""" + pass diff --git a/pos_next/pos_next/doctype/sync_history/__init__.py b/pos_next/pos_next/doctype/sync_history/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/pos_next/doctype/sync_history/sync_history.json b/pos_next/pos_next/doctype/sync_history/sync_history.json new file mode 100644 index 00000000..ea933a6a --- /dev/null +++ b/pos_next/pos_next/doctype/sync_history/sync_history.json @@ -0,0 +1,21 @@ +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": ["reference_doctype", "reference_name", "operation", "acked_at", "attempts", "payload_hash"], + "fields": [ + {"fieldname": "reference_doctype", "fieldtype": "Link", "in_list_view": 1, "label": "Reference DocType", "options": "DocType"}, + {"fieldname": "reference_name", "fieldtype": "Data", "in_list_view": 1, "label": "Reference Name"}, + {"fieldname": "operation", "fieldtype": "Data", "in_list_view": 1, "label": "Operation"}, + {"fieldname": "acked_at", "fieldtype": "Datetime", "in_list_view": 1, "label": "Acked At"}, + {"fieldname": "attempts", "fieldtype": "Int", "label": "Attempts"}, + {"fieldname": "payload_hash", "fieldtype": "Data", "label": "Payload Hash"} + ], + "index_web_pages_for_search": 0, "links": [], + "modified": "2026-04-05 00:00:00", "modified_by": "Administrator", + "module": "POS Next", "name": "Sync History", "owner": "Administrator", + "permissions": [{"read": 1, "report": 1, "role": "System Manager"}], + "row_format": "Dynamic", "sort_field": "acked_at", "sort_order": "DESC", "states": [], "track_changes": 0 +} diff --git a/pos_next/pos_next/doctype/sync_history/sync_history.py b/pos_next/pos_next/doctype/sync_history/sync_history.py new file mode 100644 index 00000000..0d675acf --- /dev/null +++ b/pos_next/pos_next/doctype/sync_history/sync_history.py @@ -0,0 +1,9 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from frappe.model.document import Document + + +class SyncHistory(Document): + """Archived acknowledged Sync Outbox rows.""" + pass diff --git a/pos_next/pos_next/doctype/sync_log/__init__.py b/pos_next/pos_next/doctype/sync_log/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/pos_next/doctype/sync_log/sync_log.json b/pos_next/pos_next/doctype/sync_log/sync_log.json new file mode 100644 index 00000000..8469a90c --- /dev/null +++ b/pos_next/pos_next/doctype/sync_log/sync_log.json @@ -0,0 +1,21 @@ +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": ["operation", "status", "duration_ms", "records_touched", "error", "context"], + "fields": [ + {"fieldname": "operation", "fieldtype": "Data", "in_list_view": 1, "in_standard_filter": 1, "label": "Operation"}, + {"fieldname": "status", "fieldtype": "Select", "in_list_view": 1, "in_standard_filter": 1, "label": "Status", "options": "success\nfailure\npartial"}, + {"fieldname": "duration_ms", "fieldtype": "Int", "in_list_view": 1, "label": "Duration (ms)"}, + {"fieldname": "records_touched", "fieldtype": "Int", "in_list_view": 1, "label": "Records Touched"}, + {"fieldname": "error", "fieldtype": "Small Text", "label": "Error"}, + {"fieldname": "context", "fieldtype": "Long Text", "label": "Context (JSON)"} + ], + "index_web_pages_for_search": 0, "links": [], + "modified": "2026-04-05 00:00:00", "modified_by": "Administrator", + "module": "POS Next", "name": "Sync Log", "owner": "Administrator", + "permissions": [{"read": 1, "report": 1, "role": "System Manager"}], + "row_format": "Dynamic", "sort_field": "creation", "sort_order": "DESC", "states": [], "track_changes": 0 +} diff --git a/pos_next/pos_next/doctype/sync_log/sync_log.py b/pos_next/pos_next/doctype/sync_log/sync_log.py new file mode 100644 index 00000000..b19d96c5 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_log/sync_log.py @@ -0,0 +1,25 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.model.document import Document + + +class SyncLog(Document): + """Append-only log of sync operations.""" + + @classmethod + def record(cls, operation, status, duration_ms=0, records_touched=0, error=None, context=None): + """Write a log entry. Safe to call from anywhere.""" + import json + doc = frappe.get_doc({ + "doctype": "Sync Log", + "operation": operation, + "status": status, + "duration_ms": duration_ms, + "records_touched": records_touched, + "error": (error or "")[:500], + "context": json.dumps(context) if context else None, + }) + doc.insert(ignore_permissions=True) + return doc diff --git a/pos_next/pos_next/doctype/sync_outbox/__init__.py b/pos_next/pos_next/doctype/sync_outbox/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/pos_next/doctype/sync_outbox/sync_outbox.json b/pos_next/pos_next/doctype/sync_outbox/sync_outbox.json new file mode 100644 index 00000000..59e3a49f --- /dev/null +++ b/pos_next/pos_next/doctype/sync_outbox/sync_outbox.json @@ -0,0 +1,116 @@ +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "reference_doctype", + "reference_name", + "operation", + "sync_status", + "priority", + "attempts", + "next_attempt_at", + "acked_at", + "last_error", + "payload" + ], + "fields": [ + { + "fieldname": "reference_doctype", + "fieldtype": "Link", + "in_list_view": 1, + "in_standard_filter": 1, + "label": "Reference DocType", + "options": "DocType", + "reqd": 1 + }, + { + "fieldname": "reference_name", + "fieldtype": "Data", + "in_list_view": 1, + "in_standard_filter": 1, + "label": "Reference Name", + "reqd": 1 + }, + { + "fieldname": "operation", + "fieldtype": "Select", + "in_list_view": 1, + "in_standard_filter": 1, + "label": "Operation", + "options": "insert\nupdate\nsubmit\ncancel\ndelete", + "reqd": 1 + }, + { + "default": "pending", + "fieldname": "sync_status", + "fieldtype": "Select", + "in_list_view": 1, + "in_standard_filter": 1, + "label": "Sync Status", + "options": "pending\nsyncing\nacked\nfailed\ndead" + }, + { + "default": "100", + "fieldname": "priority", + "fieldtype": "Int", + "in_list_view": 1, + "label": "Priority" + }, + { + "default": "0", + "fieldname": "attempts", + "fieldtype": "Int", + "label": "Attempts" + }, + { + "fieldname": "next_attempt_at", + "fieldtype": "Datetime", + "label": "Next Attempt At" + }, + { + "fieldname": "acked_at", + "fieldtype": "Datetime", + "label": "Acked At", + "read_only": 1 + }, + { + "fieldname": "last_error", + "fieldtype": "Small Text", + "label": "Last Error" + }, + { + "fieldname": "payload", + "fieldtype": "Long Text", + "label": "Payload (JSON)" + } + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Outbox", + "owner": "Administrator", + "permissions": [ + { + "create": 1, + "delete": 1, + "email": 1, + "export": 1, + "print": 1, + "read": 1, + "report": 1, + "role": "System Manager", + "share": 1, + "write": 1 + } + ], + "row_format": "Dynamic", + "sort_field": "creation", + "sort_order": "DESC", + "states": [], + "track_changes": 0 +} diff --git a/pos_next/pos_next/doctype/sync_outbox/sync_outbox.py b/pos_next/pos_next/doctype/sync_outbox/sync_outbox.py new file mode 100644 index 00000000..422fc01a --- /dev/null +++ b/pos_next/pos_next/doctype/sync_outbox/sync_outbox.py @@ -0,0 +1,54 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.model.document import Document + + +TERMINAL_OPERATIONS = {"submit", "cancel", "delete"} + + +class SyncOutbox(Document): + """Pending change event awaiting push to central.""" + + @classmethod + def enqueue(cls, reference_doctype, reference_name, operation, payload, priority=100): + """ + Add a change event to the outbox, compacting pending updates to the same record. + + For terminal operations (submit/cancel/delete), always insert. + For insert/update, if a pending row already exists for this + (reference_doctype, reference_name, operation), update its payload in place. + + Returns the created or updated Sync Outbox document. + """ + if operation not in TERMINAL_OPERATIONS: + existing = frappe.db.get_value( + "Sync Outbox", + { + "reference_doctype": reference_doctype, + "reference_name": reference_name, + "operation": operation, + "sync_status": "pending", + }, + "name", + ) + if existing: + doc = frappe.get_doc("Sync Outbox", existing) + doc.payload = payload + doc.priority = priority + doc.save(ignore_permissions=True) + return doc + + doc = frappe.get_doc({ + "doctype": "Sync Outbox", + "reference_doctype": reference_doctype, + "reference_name": reference_name, + "operation": operation, + "payload": payload, + "priority": priority, + "sync_status": "pending", + "attempts": 0, + }) + doc.insert(ignore_permissions=True) + return doc diff --git a/pos_next/pos_next/doctype/sync_record_state/__init__.py b/pos_next/pos_next/doctype/sync_record_state/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/pos_next/doctype/sync_record_state/sync_record_state.json b/pos_next/pos_next/doctype/sync_record_state/sync_record_state.json new file mode 100644 index 00000000..06f1ae44 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_record_state/sync_record_state.json @@ -0,0 +1,20 @@ +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": ["reference_doctype", "reference_name", "last_synced_hash", "last_synced_at", "last_synced_from"], + "fields": [ + {"fieldname": "reference_doctype", "fieldtype": "Link", "in_list_view": 1, "label": "Reference DocType", "options": "DocType", "reqd": 1}, + {"fieldname": "reference_name", "fieldtype": "Data", "in_list_view": 1, "label": "Reference Name", "reqd": 1}, + {"fieldname": "last_synced_hash", "fieldtype": "Data", "label": "Last Synced Hash"}, + {"fieldname": "last_synced_at", "fieldtype": "Datetime", "label": "Last Synced At"}, + {"fieldname": "last_synced_from", "fieldtype": "Data", "label": "Last Synced From"} + ], + "index_web_pages_for_search": 0, "links": [], + "modified": "2026-04-05 00:00:00", "modified_by": "Administrator", + "module": "POS Next", "name": "Sync Record State", "owner": "Administrator", + "permissions": [{"create": 1, "delete": 1, "read": 1, "report": 1, "role": "System Manager", "write": 1}], + "row_format": "Dynamic", "sort_field": "modified", "sort_order": "DESC", "states": [], "track_changes": 0 +} diff --git a/pos_next/pos_next/doctype/sync_record_state/sync_record_state.py b/pos_next/pos_next/doctype/sync_record_state/sync_record_state.py new file mode 100644 index 00000000..8fb73cd2 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_record_state/sync_record_state.py @@ -0,0 +1,45 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.model.document import Document +from frappe.utils import now_datetime + + +class SyncRecordState(Document): + """Per-record sync tracking: hash + source + timestamp of last successful sync.""" + + @classmethod + def upsert(cls, reference_doctype, reference_name, payload_hash, source): + """Record that a record was just synced; store hash + source.""" + existing = frappe.db.get_value( + "Sync Record State", + {"reference_doctype": reference_doctype, "reference_name": reference_name}, + "name", + ) + if existing: + doc = frappe.get_doc("Sync Record State", existing) + doc.last_synced_hash = payload_hash + doc.last_synced_at = now_datetime() + doc.last_synced_from = source + doc.save(ignore_permissions=True) + return doc + doc = frappe.get_doc({ + "doctype": "Sync Record State", + "reference_doctype": reference_doctype, + "reference_name": reference_name, + "last_synced_hash": payload_hash, + "last_synced_at": now_datetime(), + "last_synced_from": source, + }) + doc.insert(ignore_permissions=True) + return doc + + @classmethod + def get_hash(cls, reference_doctype, reference_name): + """Return the last-synced hash, or None.""" + return frappe.db.get_value( + "Sync Record State", + {"reference_doctype": reference_doctype, "reference_name": reference_name}, + "last_synced_hash", + ) diff --git a/pos_next/pos_next/doctype/sync_sibling_branch/__init__.py b/pos_next/pos_next/doctype/sync_sibling_branch/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/pos_next/doctype/sync_sibling_branch/sync_sibling_branch.json b/pos_next/pos_next/doctype/sync_sibling_branch/sync_sibling_branch.json new file mode 100644 index 00000000..f4479da4 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_sibling_branch/sync_sibling_branch.json @@ -0,0 +1,48 @@ +{ + "actions": [], + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "branch_code", + "branch", + "branch_url" + ], + "fields": [ + { + "fieldname": "branch_code", + "fieldtype": "Data", + "in_list_view": 1, + "label": "Branch Code", + "read_only": 1, + "reqd": 1 + }, + { + "fieldname": "branch", + "fieldtype": "Link", + "in_list_view": 1, + "label": "Branch", + "options": "Branch", + "read_only": 1 + }, + { + "fieldname": "branch_url", + "fieldtype": "Data", + "label": "Branch URL", + "read_only": 1 + } + ], + "index_web_pages_for_search": 0, + "istable": 1, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Sibling Branch", + "owner": "Administrator", + "permissions": [], + "sort_field": "branch_code", + "sort_order": "ASC", + "states": [], + "track_changes": 0 +} diff --git a/pos_next/pos_next/doctype/sync_sibling_branch/sync_sibling_branch.py b/pos_next/pos_next/doctype/sync_sibling_branch/sync_sibling_branch.py new file mode 100644 index 00000000..d429edc0 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_sibling_branch/sync_sibling_branch.py @@ -0,0 +1,9 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from frappe.model.document import Document + + +class SyncSiblingBranch(Document): + """Read-only list entry for another branch, synced down from central.""" + pass diff --git a/pos_next/pos_next/doctype/sync_site_config/__init__.py b/pos_next/pos_next/doctype/sync_site_config/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/pos_next/doctype/sync_site_config/sync_site_config.js b/pos_next/pos_next/doctype/sync_site_config/sync_site_config.js new file mode 100644 index 00000000..ab7f31e0 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_site_config/sync_site_config.js @@ -0,0 +1,126 @@ +// Copyright (c) 2026, BrainWise and contributors +// For license information, please see license.txt + +frappe.ui.form.on("Sync Site Config", { + refresh(frm) { + if (frm.doc.site_role === "Branch" && !frm.is_new()) { + frm.add_custom_button(__("Test Sync Connection"), () => { + frappe.call({ + doc: frm.doc, + method: "test_connection", + freeze: true, + freeze_message: __("Testing connection..."), + callback(r) { + if (!r.message) return; + const msg = r.message.message; + const ok = r.message.ok; + frappe.msgprint({ + title: ok ? __("Connection OK") : __("Connection Failed"), + message: msg, + indicator: ok ? "green" : "red", + }); + }, + }); + }); + } + + // Show sync status dashboard + if (!frm.is_new()) { + frm.trigger("load_sync_dashboard"); + } + }, + + load_sync_dashboard(frm) { + frappe.call({ + method: "pos_next.sync.api.status.get_sync_status", + callback(r) { + if (!r.message || !r.message.configured) return; + const data = r.message; + frm.dashboard.clear_headline(); + + // Build status HTML + let html = `
`; + + // Last pull info + if (data.last_pull_masters_at) { + html += `
+ ${__("Last Masters Pull")}: + ${frappe.datetime.prettyDate(data.last_pull_masters_at)} +
`; + } + + // Error banner + if (data.last_sync_error) { + html += `
+ ${__("Last Error")}: ${data.last_sync_error} +
`; + } + + // Outbox stats + html += `
+ ${__("Outbox")}: + ${data.outbox.pending} ${__("pending")}, + ${data.outbox.failed} ${__("failed")}, + ${data.outbox.dead} ${__("dead letter")} +
`; + + // Conflicts + if (data.conflicts_pending > 0) { + html += `
+ ${data.conflicts_pending} ${__("unresolved sync conflicts")} +
`; + } + + // Watermarks table + if (data.watermarks && data.watermarks.length > 0) { + html += `
+ ${__("Watermarks")} (${data.watermarks.length} ${__("DocTypes")}) + + + + + + + `; + data.watermarks.forEach(w => { + html += ` + + + + + `; + }); + html += `
${__("DocType")}${__("Last Modified")}${__("Last Pulled")}${__("Records")}
${w.doctype_name}${w.last_modified ? frappe.datetime.prettyDate(w.last_modified) : "-"}${w.last_pulled_at ? frappe.datetime.prettyDate(w.last_pulled_at) : "-"}${w.records_pulled || 0}
`; + } + + // Recent logs + if (data.recent_logs && data.recent_logs.length > 0) { + html += `
+ ${__("Recent Sync Logs")} (${data.recent_logs.length}) + + + + + + + + `; + data.recent_logs.forEach(log => { + const indicator = log.status === "success" ? "green" : log.status === "failure" ? "red" : "orange"; + html += ` + + + + + + `; + }); + html += `
${__("Operation")}${__("Status")}${__("Duration")}${__("Records")}${__("When")}
${log.operation}${log.status}${log.duration_ms || 0}ms${log.records_touched || 0}${frappe.datetime.prettyDate(log.creation)}
`; + } + + html += `
`; + frm.dashboard.set_headline_alert(html); + }, + }); + }, +}); diff --git a/pos_next/pos_next/doctype/sync_site_config/sync_site_config.json b/pos_next/pos_next/doctype/sync_site_config/sync_site_config.json new file mode 100644 index 00000000..d6113df7 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_site_config/sync_site_config.json @@ -0,0 +1,224 @@ +{ + "actions": [], + "autoname": "field:branch_code", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": [ + "site_role", + "branch_code", + "branch", + "enabled", + "section_break_central", + "central_url", + "sync_username", + "sync_password", + "column_break_central", + "push_interval_seconds", + "pull_masters_interval_seconds", + "pull_failover_interval_seconds", + "section_break_status", + "last_push_at", + "last_pull_masters_at", + "last_pull_failover_at", + "column_break_status", + "outbox_depth", + "last_sync_error", + "section_break_siblings", + "sibling_branches", + "section_break_central_only", + "registered_branch_url", + "notes", + "section_break_registry", + "synced_doctypes" + ], + "fields": [ + { + "fieldname": "site_role", + "fieldtype": "Select", + "in_list_view": 1, + "label": "Site Role", + "options": "Branch\nCentral", + "reqd": 1 + }, + { + "fieldname": "branch_code", + "fieldtype": "Data", + "in_list_view": 1, + "label": "Branch Code", + "reqd": 1, + "unique": 1 + }, + { + "fieldname": "branch", + "fieldtype": "Link", + "label": "Branch", + "options": "Branch" + }, + { + "default": "1", + "fieldname": "enabled", + "fieldtype": "Check", + "label": "Enabled" + }, + { + "depends_on": "eval:doc.site_role==\"Branch\"", + "fieldname": "section_break_central", + "fieldtype": "Section Break", + "label": "Central Connection" + }, + { + "depends_on": "eval:doc.site_role==\"Branch\"", + "fieldname": "central_url", + "fieldtype": "Data", + "label": "Central URL", + "mandatory_depends_on": "eval:doc.site_role==\"Branch\"" + }, + { + "depends_on": "eval:doc.site_role==\"Branch\"", + "fieldname": "sync_username", + "fieldtype": "Data", + "label": "Sync Username", + "mandatory_depends_on": "eval:doc.site_role==\"Branch\"" + }, + { + "depends_on": "eval:doc.site_role==\"Branch\"", + "fieldname": "sync_password", + "fieldtype": "Password", + "label": "Sync Password", + "mandatory_depends_on": "eval:doc.site_role==\"Branch\"" + }, + { + "fieldname": "column_break_central", + "fieldtype": "Column Break" + }, + { + "default": "60", + "fieldname": "push_interval_seconds", + "fieldtype": "Int", + "label": "Push Interval (seconds)" + }, + { + "default": "300", + "fieldname": "pull_masters_interval_seconds", + "fieldtype": "Int", + "label": "Pull Masters Interval (seconds)" + }, + { + "default": "120", + "fieldname": "pull_failover_interval_seconds", + "fieldtype": "Int", + "label": "Pull Failover Interval (seconds)" + }, + { + "collapsible": 1, + "fieldname": "section_break_status", + "fieldtype": "Section Break", + "label": "Status" + }, + { + "fieldname": "last_push_at", + "fieldtype": "Datetime", + "label": "Last Push At", + "read_only": 1 + }, + { + "fieldname": "last_pull_masters_at", + "fieldtype": "Datetime", + "label": "Last Pull Masters At", + "read_only": 1 + }, + { + "fieldname": "last_pull_failover_at", + "fieldtype": "Datetime", + "label": "Last Pull Failover At", + "read_only": 1 + }, + { + "fieldname": "column_break_status", + "fieldtype": "Column Break" + }, + { + "fieldname": "outbox_depth", + "fieldtype": "Int", + "label": "Outbox Depth", + "read_only": 1 + }, + { + "fieldname": "last_sync_error", + "fieldtype": "Small Text", + "label": "Last Sync Error", + "read_only": 1 + }, + { + "collapsible": 1, + "depends_on": "eval:doc.site_role==\"Branch\"", + "fieldname": "section_break_siblings", + "fieldtype": "Section Break", + "label": "Sibling Branches (Read-Only)" + }, + { + "fieldname": "sibling_branches", + "fieldtype": "Table", + "label": "Sibling Branches", + "options": "Sync Sibling Branch", + "read_only": 1 + }, + { + "collapsible": 1, + "depends_on": "eval:doc.site_role==\"Central\"", + "fieldname": "section_break_central_only", + "fieldtype": "Section Break", + "label": "Central-Only" + }, + { + "fieldname": "registered_branch_url", + "fieldtype": "Data", + "label": "Registered Branch URL" + }, + { + "fieldname": "notes", + "fieldtype": "Small Text", + "label": "Notes" + }, + { + "collapsible": 1, + "fieldname": "section_break_registry", + "fieldtype": "Section Break", + "label": "Synced DocTypes Registry" + }, + { + "fieldname": "synced_doctypes", + "fieldtype": "Table", + "label": "Synced DocTypes", + "options": "Sync DocType Rule" + } + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Site Config", + "naming_rule": "By fieldname", + "owner": "Administrator", + "permissions": [ + { + "create": 1, + "delete": 1, + "email": 1, + "export": 1, + "print": 1, + "read": 1, + "report": 1, + "role": "System Manager", + "share": 1, + "write": 1 + } + ], + "row_format": "Dynamic", + "sort_field": "modified", + "sort_order": "DESC", + "states": [], + "track_changes": 1 +} diff --git a/pos_next/pos_next/doctype/sync_site_config/sync_site_config.py b/pos_next/pos_next/doctype/sync_site_config/sync_site_config.py new file mode 100644 index 00000000..1477dc80 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_site_config/sync_site_config.py @@ -0,0 +1,114 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import os +import re + +import frappe +from frappe import _ +from frappe.model.document import Document + + +# Dev escape hatch: set POS_NEXT_SYNC_ALLOW_HTTP=1 in the environment to +# permit http:// central URLs (for local multi-site bench testing). +# Never set this in production. +_ALLOW_HTTP = os.environ.get("POS_NEXT_SYNC_ALLOW_HTTP") == "1" + + +class SyncSiteConfig(Document): + """ + Sync configuration record. + + Cardinality depends on site_role: + - Branch: singleton (only one record allowed per site) + - Central: multi-record (one per registered branch) + """ + + def validate(self): + self._validate_cardinality() + self._validate_https_url() + self._validate_branch_code() + + def _validate_cardinality(self): + """A Branch-role record must be singleton; Central allows many.""" + if self.site_role != "Branch": + return + # On insert self.name may not yet be set (before autoname runs); + # on update self.name is the existing record's name. Either way, + # we look for other Branch rows excluding this exact name. + filters = {"site_role": "Branch"} + if self.name: + filters["name"] = ("!=", self.name) + existing = frappe.db.get_value("Sync Site Config", filters, "name") + if existing: + frappe.throw( + _( + "Only one Sync Site Config with site_role=Branch is allowed " + "per site. Existing record: {0}" + ).format(existing), + title=_("Branch Config Already Exists"), + ) + + def _validate_https_url(self): + """central_url must use https:// scheme (unless dev bypass is set).""" + if self.site_role != "Branch": + return + if not self.central_url: + return + if self.central_url.startswith("https://"): + return + if _ALLOW_HTTP and self.central_url.startswith("http://"): + return + frappe.throw( + _("central_url must use https:// scheme, got: {0}").format(self.central_url), + title=_("Insecure URL"), + ) + + def _validate_branch_code(self): + """branch_code must match [A-Z0-9]{2,16}.""" + if not self.branch_code: + return + if not re.match(r"^[A-Z0-9]{2,16}$", self.branch_code): + frappe.throw( + _("branch_code must be 2-16 uppercase letters/digits, got: {0}").format( + self.branch_code + ), + title=_("Invalid Branch Code"), + ) + + def after_insert(self): + """Seed the synced_doctypes registry with default rules.""" + from pos_next.sync.seeds import apply_seeds_to_config + apply_seeds_to_config(self) + + @frappe.whitelist() + def test_connection(self): + """ + Attempt login against central and return a short status message. + Only meaningful on Branch-role configs. + """ + if self.site_role != "Branch": + return {"ok": False, "message": "Test Connection only applies to Branch role"} + if not (self.central_url and self.sync_username and self.sync_password): + return {"ok": False, "message": "Fill central_url, sync_username, sync_password first"} + + from pos_next.sync.auth import SyncSession + from pos_next.sync.exceptions import SyncAuthError, SyncTransportError + + password = self.get_password("sync_password") + session = SyncSession( + central_url=self.central_url, + username=self.sync_username, + password=password, + ) + try: + session.login() + except SyncAuthError as e: + return {"ok": False, "message": f"Auth failed: {e}"} + except SyncTransportError as e: + return {"ok": False, "message": f"Network error: {e}"} + except Exception as e: + return {"ok": False, "message": f"Unexpected error: {e}"} + finally: + session.logout() + return {"ok": True, "message": f"Connected to {self.central_url} as {self.sync_username}"} diff --git a/pos_next/pos_next/doctype/sync_tombstone/__init__.py b/pos_next/pos_next/doctype/sync_tombstone/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/pos_next/doctype/sync_tombstone/sync_tombstone.json b/pos_next/pos_next/doctype/sync_tombstone/sync_tombstone.json new file mode 100644 index 00000000..522fe7fd --- /dev/null +++ b/pos_next/pos_next/doctype/sync_tombstone/sync_tombstone.json @@ -0,0 +1,28 @@ +{ + "actions": [], + "autoname": "hash", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": ["reference_doctype", "reference_name", "deleted_at"], + "fields": [ + {"fieldname": "reference_doctype", "fieldtype": "Link", "in_list_view": 1, "in_standard_filter": 1, "label": "Reference DocType", "options": "DocType", "reqd": 1}, + {"fieldname": "reference_name", "fieldtype": "Data", "in_list_view": 1, "in_standard_filter": 1, "label": "Reference Name", "reqd": 1}, + {"fieldname": "deleted_at", "fieldtype": "Datetime", "in_list_view": 1, "label": "Deleted At", "reqd": 1} + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Tombstone", + "owner": "Administrator", + "permissions": [ + {"create": 1, "delete": 1, "read": 1, "report": 1, "role": "System Manager", "write": 1} + ], + "row_format": "Dynamic", + "sort_field": "deleted_at", + "sort_order": "DESC", + "states": [], + "track_changes": 0 +} diff --git a/pos_next/pos_next/doctype/sync_tombstone/sync_tombstone.py b/pos_next/pos_next/doctype/sync_tombstone/sync_tombstone.py new file mode 100644 index 00000000..573e0238 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_tombstone/sync_tombstone.py @@ -0,0 +1,22 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.model.document import Document +from frappe.utils import now_datetime + + +class SyncTombstone(Document): + """Record that a master was deleted on central, so branches can replay the delete.""" + + @classmethod + def record(cls, reference_doctype, reference_name): + """Create a tombstone for a deleted record.""" + doc = frappe.get_doc({ + "doctype": "Sync Tombstone", + "reference_doctype": reference_doctype, + "reference_name": reference_name, + "deleted_at": now_datetime(), + }) + doc.insert(ignore_permissions=True) + return doc diff --git a/pos_next/pos_next/doctype/sync_watermark/__init__.py b/pos_next/pos_next/doctype/sync_watermark/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/pos_next/doctype/sync_watermark/sync_watermark.json b/pos_next/pos_next/doctype/sync_watermark/sync_watermark.json new file mode 100644 index 00000000..ef4cc3c1 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_watermark/sync_watermark.json @@ -0,0 +1,30 @@ +{ + "actions": [], + "autoname": "field:doctype_name", + "creation": "2026-04-05 00:00:00", + "doctype": "DocType", + "engine": "InnoDB", + "field_order": ["doctype_name", "last_modified", "last_pulled_at", "records_pulled"], + "fields": [ + {"fieldname": "doctype_name", "fieldtype": "Link", "in_list_view": 1, "label": "DocType", "options": "DocType", "reqd": 1, "unique": 1}, + {"fieldname": "last_modified", "fieldtype": "Datetime", "in_list_view": 1, "label": "Last Modified"}, + {"fieldname": "last_pulled_at", "fieldtype": "Datetime", "in_list_view": 1, "label": "Last Pulled At"}, + {"default": "0", "fieldname": "records_pulled", "fieldtype": "Int", "in_list_view": 1, "label": "Records Pulled"} + ], + "index_web_pages_for_search": 0, + "links": [], + "modified": "2026-04-05 00:00:00", + "modified_by": "Administrator", + "module": "POS Next", + "name": "Sync Watermark", + "naming_rule": "By fieldname", + "owner": "Administrator", + "permissions": [ + {"create": 1, "delete": 1, "read": 1, "report": 1, "role": "System Manager", "write": 1} + ], + "row_format": "Dynamic", + "sort_field": "modified", + "sort_order": "DESC", + "states": [], + "track_changes": 0 +} diff --git a/pos_next/pos_next/doctype/sync_watermark/sync_watermark.py b/pos_next/pos_next/doctype/sync_watermark/sync_watermark.py new file mode 100644 index 00000000..6ab0d193 --- /dev/null +++ b/pos_next/pos_next/doctype/sync_watermark/sync_watermark.py @@ -0,0 +1,37 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.model.document import Document +from frappe.utils import now_datetime + + +class SyncWatermark(Document): + """Per-DocType watermark for master pull cycles.""" + + @classmethod + def upsert(cls, doctype_name, last_modified, records_pulled=0): + """Insert or update the watermark row for a DocType.""" + existing = frappe.db.get_value("Sync Watermark", {"doctype_name": doctype_name}, "name") + if existing: + doc = frappe.get_doc("Sync Watermark", existing) + doc.last_modified = last_modified + doc.last_pulled_at = now_datetime() + doc.records_pulled = records_pulled + doc.save(ignore_permissions=True) + return doc + doc = frappe.get_doc({ + "doctype": "Sync Watermark", + "doctype_name": doctype_name, + "last_modified": last_modified, + "last_pulled_at": now_datetime(), + "records_pulled": records_pulled, + }) + doc.insert(ignore_permissions=True) + return doc + + @classmethod + def get_for(cls, doctype_name): + """Fetch the watermark row for a DocType, or None.""" + name = frappe.db.get_value("Sync Watermark", {"doctype_name": doctype_name}, "name") + return frappe.get_doc("Sync Watermark", name) if name else None diff --git a/pos_next/sync/__init__.py b/pos_next/sync/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/sync/adapters/__init__.py b/pos_next/sync/adapters/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/sync/adapters/base.py b/pos_next/sync/adapters/base.py new file mode 100644 index 00000000..605367f3 --- /dev/null +++ b/pos_next/sync/adapters/base.py @@ -0,0 +1,75 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Base class for per-DocType sync adapters.""" + +import frappe +from pos_next.sync.payload import to_payload + +# Fields to skip when setting values on an existing doc during sync upsert +SKIP_ON_UPSERT = frozenset({"doctype", "name", "modified", "modified_by", "creation", "owner"}) + + +class BaseSyncAdapter: + """ + Subclass per synced DocType. Override methods as needed. + + Each subclass MUST set the class attribute `doctype`. + """ + doctype: str = "" + + def serialize(self, doc): + """Build a sync payload dict from a Frappe Document.""" + return to_payload(doc) + + def apply_incoming(self, payload, operation): + """ + Apply an incoming payload locally. Default implementation: + - delete → delete local record if exists + - insert/update/submit/cancel → upsert via db_update (bypasses hooks) + + Returns the local document name. + """ + name = payload.get("name") + if not name: + raise ValueError(f"{self.doctype}: payload missing 'name' field") + + if operation == "delete": + if frappe.db.exists(self.doctype, name): + frappe.delete_doc(self.doctype, name, ignore_permissions=True, force=True) + return name + + payload = self.pre_apply_transform(payload) + + try: + doc = frappe.get_doc(self.doctype, name) + # db_update bypasses all hooks/validations — synced data is pre-validated + for key, val in payload.items(): + if key not in SKIP_ON_UPSERT and not isinstance(val, list): + doc.set(key, val) + doc.db_update() + except frappe.DoesNotExistError: + doc = frappe.get_doc({"doctype": self.doctype, **payload}) + _set_sync_flags(doc) + doc.insert(ignore_permissions=True) + return doc.name + + def conflict_key(self, payload): + """Tuple of fieldnames that identify this record across sites.""" + return ("name",) + + def validate_incoming(self, payload): + """Raise on invalid payload. Default: accept everything.""" + return None + + def pre_apply_transform(self, payload): + """Transform payload before apply. Default: identity.""" + return payload + + +def _set_sync_flags(doc): + """Bypass validations for synced data — it was valid on the source site.""" + doc.flags.ignore_validate = True + doc.flags.ignore_links = True + doc.flags.ignore_mandatory = True + doc.flags.ignore_conflict = True diff --git a/pos_next/sync/adapters/customer.py b/pos_next/sync/adapters/customer.py new file mode 100644 index 00000000..4bc6dbae --- /dev/null +++ b/pos_next/sync/adapters/customer.py @@ -0,0 +1,49 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for Customer — bidirectional with mobile_no dedup.""" + +import frappe +from pos_next.sync.adapters.base import BaseSyncAdapter, SKIP_ON_UPSERT, _set_sync_flags +from pos_next.sync import registry + + +class CustomerAdapter(BaseSyncAdapter): + doctype = "Customer" + + def conflict_key(self, payload): + return ("mobile_no",) + + def apply_incoming(self, payload, operation): + """Dedup by mobile_no before standard upsert.""" + if operation == "delete": + return super().apply_incoming(payload, operation) + + payload = self.pre_apply_transform(payload) + mobile_no = payload.get("mobile_no") + name = payload.get("name") + + # Dedup: if local customer with same mobile_no exists, return it + if mobile_no: + existing = frappe.db.get_value("Customer", {"mobile_no": mobile_no}, "name") + if existing and existing != name: + return existing + + # Update existing by name + if name and frappe.db.exists("Customer", name): + doc = frappe.get_doc("Customer", name) + for key, val in payload.items(): + if key not in SKIP_ON_UPSERT and not isinstance(val, list): + doc.set(key, val) + doc.db_update() + return doc.name + + # Insert new — Customer uses autoname, don't force central's name + payload.pop("name", None) + doc = frappe.get_doc({"doctype": "Customer", **payload}) + _set_sync_flags(doc) + doc.insert(ignore_permissions=True) + return doc.name + + +registry.register(CustomerAdapter) diff --git a/pos_next/sync/adapters/generic_master.py b/pos_next/sync/adapters/generic_master.py new file mode 100644 index 00000000..ddd2f23d --- /dev/null +++ b/pos_next/sync/adapters/generic_master.py @@ -0,0 +1,44 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Generic adapter for simple master DocTypes that need no special logic.""" + +from pos_next.sync.adapters.base import BaseSyncAdapter +from pos_next.sync import registry + + +GENERIC_MASTER_DOCTYPES = [ + "POS Profile", + "Warehouse", + "Mode of Payment", + "Item Group", + "UOM", + "Price List", + "Company", + "Currency", + "Branch", + "Customer Group", + "Sales Person", + "Employee", + "User", + "Role Profile", + "Sales Taxes and Charges Template", + "Item Tax Template", + "POS Settings", + "Loyalty Program", + "Item Barcode", +] + + +class GenericMasterAdapter(BaseSyncAdapter): + """ + Default adapter for masters that need only standard upsert-by-name. + One class registered for many DocTypes. + """ + pass + + +# Register for all generic masters +for _dt in GENERIC_MASTER_DOCTYPES: + _cls = type(f"GenericMasterAdapter_{_dt.replace(' ', '_')}", (GenericMasterAdapter,), {"doctype": _dt}) + registry.register(_cls) diff --git a/pos_next/sync/adapters/item.py b/pos_next/sync/adapters/item.py new file mode 100644 index 00000000..5c86e1e0 --- /dev/null +++ b/pos_next/sync/adapters/item.py @@ -0,0 +1,38 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for Item DocType — variant-aware delete guard.""" + +import frappe +from pos_next.sync.adapters.base import BaseSyncAdapter +from pos_next.sync.payload import strip_meta +from pos_next.sync import registry + + +class ItemAdapter(BaseSyncAdapter): + doctype = "Item" + + def pre_apply_transform(self, payload): + """Strip meta fields from children too.""" + cleaned = strip_meta(payload) + for key, val in cleaned.items(): + if isinstance(val, list): + cleaned[key] = [strip_meta(row) if isinstance(row, dict) else row for row in val] + return cleaned + + def apply_incoming(self, payload, operation): + """Don't delete template Items that have local variants.""" + if operation == "delete": + name = payload.get("name") + if name and frappe.db.exists("Item", name): + has_variants = frappe.db.get_value("Item", name, "has_variants") + if has_variants and frappe.db.count("Item", {"variant_of": name}) > 0: + frappe.log_error( + f"Skipping delete of template Item {name}: variants exist", + "Sync Item Adapter", + ) + return name + return super().apply_incoming(payload, operation) + + +registry.register(ItemAdapter) diff --git a/pos_next/sync/adapters/item_price.py b/pos_next/sync/adapters/item_price.py new file mode 100644 index 00000000..138b3add --- /dev/null +++ b/pos_next/sync/adapters/item_price.py @@ -0,0 +1,44 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for Item Price — uses composite conflict key.""" + +import frappe +from pos_next.sync.adapters.base import BaseSyncAdapter, SKIP_ON_UPSERT, _set_sync_flags +from pos_next.sync import registry + + +class ItemPriceAdapter(BaseSyncAdapter): + doctype = "Item Price" + + def conflict_key(self, payload): + """Item Price identity is by item_code + price_list + uom.""" + return ("item_code", "price_list", "uom") + + def apply_incoming(self, payload, operation): + """Look up by composite key first. If found, update. If not, insert.""" + if operation == "delete": + return super().apply_incoming(payload, operation) + + payload = self.pre_apply_transform(payload) + filters = {"item_code": payload.get("item_code"), "price_list": payload.get("price_list")} + if payload.get("uom"): + filters["uom"] = payload["uom"] + + existing = frappe.db.get_value("Item Price", filters, "name") + if existing: + doc = frappe.get_doc("Item Price", existing) + for key, val in payload.items(): + if key not in SKIP_ON_UPSERT and not isinstance(val, list): + doc.set(key, val) + doc.db_update() + return doc.name + + payload.pop("name", None) + doc = frappe.get_doc({"doctype": "Item Price", **payload}) + _set_sync_flags(doc) + doc.insert(ignore_permissions=True) + return doc.name + + +registry.register(ItemPriceAdapter) diff --git a/pos_next/sync/adapters/payment_entry.py b/pos_next/sync/adapters/payment_entry.py new file mode 100644 index 00000000..ef0ab066 --- /dev/null +++ b/pos_next/sync/adapters/payment_entry.py @@ -0,0 +1,22 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for Payment Entry.""" + +from pos_next.sync.adapters.submittable import SubmittableAdapter +from pos_next.sync.payload import strip_meta +from pos_next.sync import registry + + +class PaymentEntryAdapter(SubmittableAdapter): + doctype = "Payment Entry" + + def pre_apply_transform(self, payload): + cleaned = strip_meta(payload) + for key, val in cleaned.items(): + if isinstance(val, list): + cleaned[key] = [strip_meta(row) if isinstance(row, dict) else row for row in val] + return cleaned + + +registry.register(PaymentEntryAdapter) diff --git a/pos_next/sync/adapters/pos_closing_shift.py b/pos_next/sync/adapters/pos_closing_shift.py new file mode 100644 index 00000000..832fac93 --- /dev/null +++ b/pos_next/sync/adapters/pos_closing_shift.py @@ -0,0 +1,14 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for POS Closing Shift — priority 20.""" + +from pos_next.sync.adapters.submittable import SubmittableAdapter +from pos_next.sync import registry + + +class POSClosingShiftAdapter(SubmittableAdapter): + doctype = "POS Closing Shift" + + +registry.register(POSClosingShiftAdapter) diff --git a/pos_next/sync/adapters/pos_opening_shift.py b/pos_next/sync/adapters/pos_opening_shift.py new file mode 100644 index 00000000..6a6e20a6 --- /dev/null +++ b/pos_next/sync/adapters/pos_opening_shift.py @@ -0,0 +1,14 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for POS Opening Shift — priority 10, synced first.""" + +from pos_next.sync.adapters.submittable import SubmittableAdapter +from pos_next.sync import registry + + +class POSOpeningShiftAdapter(SubmittableAdapter): + doctype = "POS Opening Shift" + + +registry.register(POSOpeningShiftAdapter) diff --git a/pos_next/sync/adapters/sales_invoice.py b/pos_next/sync/adapters/sales_invoice.py new file mode 100644 index 00000000..1a6f9003 --- /dev/null +++ b/pos_next/sync/adapters/sales_invoice.py @@ -0,0 +1,42 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for Sales Invoice — naming series validation, child tables.""" + +import frappe +from pos_next.sync.adapters.submittable import SubmittableAdapter +from pos_next.sync.payload import strip_meta +from pos_next.sync.exceptions import SyncValidationError +from pos_next.sync import registry + + +class SalesInvoiceAdapter(SubmittableAdapter): + doctype = "Sales Invoice" + + def validate_incoming(self, payload): + origin_branch = payload.get("origin_branch") + if not origin_branch: + frappe.log_error( + f"Sales Invoice {payload.get('name')} missing origin_branch", + "Sync Sales Invoice Adapter", + ) + return + + # Naming series must contain the branch code (e.g. SINV-CAI-.#####) + name = payload.get("name", "") + naming_series = payload.get("naming_series", "") + if naming_series and origin_branch not in naming_series: + raise SyncValidationError( + f"Sales Invoice {name}: naming series '{naming_series}' " + f"does not contain origin branch code '{origin_branch}'" + ) + + def pre_apply_transform(self, payload): + cleaned = strip_meta(payload) + for key, val in cleaned.items(): + if isinstance(val, list): + cleaned[key] = [strip_meta(row) if isinstance(row, dict) else row for row in val] + return cleaned + + +registry.register(SalesInvoiceAdapter) diff --git a/pos_next/sync/adapters/stock_ledger_entry.py b/pos_next/sync/adapters/stock_ledger_entry.py new file mode 100644 index 00000000..b4eda793 --- /dev/null +++ b/pos_next/sync/adapters/stock_ledger_entry.py @@ -0,0 +1,36 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Adapter for Stock Ledger Entry — insert-only, no updates.""" + +import frappe +from pos_next.sync.adapters.base import BaseSyncAdapter, _set_sync_flags +from pos_next.sync import registry + + +class StockLedgerEntryAdapter(BaseSyncAdapter): + doctype = "Stock Ledger Entry" + + def apply_incoming(self, payload, operation): + """Insert-only: SLEs are never updated after creation.""" + name = payload.get("name") + if not name: + raise ValueError("SLE payload missing 'name'") + + if operation == "delete": + if frappe.db.exists(self.doctype, name): + frappe.delete_doc(self.doctype, name, ignore_permissions=True, force=True) + return name + + # Skip if already exists (insert-only) + if frappe.db.exists(self.doctype, name): + return name + + payload = self.pre_apply_transform(payload) + doc = frappe.get_doc({"doctype": self.doctype, **payload}) + _set_sync_flags(doc) + doc.insert(ignore_permissions=True) + return doc.name + + +registry.register(StockLedgerEntryAdapter) diff --git a/pos_next/sync/adapters/submittable.py b/pos_next/sync/adapters/submittable.py new file mode 100644 index 00000000..3773e07d --- /dev/null +++ b/pos_next/sync/adapters/submittable.py @@ -0,0 +1,48 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Base adapter for submitted documents — docstatus-aware insert/cancel.""" + +import frappe +from pos_next.sync.adapters.base import BaseSyncAdapter, SKIP_ON_UPSERT, _set_sync_flags + + +class SubmittableAdapter(BaseSyncAdapter): + """ + Adapter for DocTypes that use docstatus (submit/cancel workflow). + + On central, submitted docs are inserted as read-only replicas + with docstatus already set — no doc.submit() is called. + Cancel sets docstatus=2 via db_update — no doc.cancel() is called. + """ + + def apply_incoming(self, payload, operation): + name = payload.get("name") + if not name: + raise ValueError(f"{self.doctype}: payload missing 'name' field") + + if operation == "delete": + if frappe.db.exists(self.doctype, name): + frappe.delete_doc(self.doctype, name, ignore_permissions=True, force=True) + return name + + if operation == "cancel": + if frappe.db.exists(self.doctype, name): + doc = frappe.get_doc(self.doctype, name) + doc.docstatus = 2 + doc.db_update() + return name + + payload = self.pre_apply_transform(payload) + + try: + doc = frappe.get_doc(self.doctype, name) + for key, val in payload.items(): + if key not in SKIP_ON_UPSERT and not isinstance(val, list): + doc.set(key, val) + doc.db_update() + except frappe.DoesNotExistError: + doc = frappe.get_doc({"doctype": self.doctype, **payload}) + _set_sync_flags(doc) + doc.insert(ignore_permissions=True) + return doc.name diff --git a/pos_next/sync/api/__init__.py b/pos_next/sync/api/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/sync/api/changes.py b/pos_next/sync/api/changes.py new file mode 100644 index 00000000..ab68fa07 --- /dev/null +++ b/pos_next/sync/api/changes.py @@ -0,0 +1,59 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Central-side API: serve upserts + tombstones since a watermark.""" + +import frappe +from pos_next.sync.payload import to_payload + + +@frappe.whitelist() +def changes_since(doctype, since, limit=100): + """ + Return records modified after `since` for the given DocType, + plus any tombstones recorded after `since`. + """ + limit = int(limit) + + # Fetch limit+1 to detect has_more + records = frappe.get_all( + doctype, + filters={"modified": (">", since)}, + order_by="modified asc", + limit_page_length=limit + 1, + fields=["name"], + ) + + has_more = len(records) > limit + records = records[:limit] + + # N+1 is unavoidable here — we need full doc with children for each record. + # The adapter's serialize() may need child tables. + upserts = [] + for row in records: + try: + doc = frappe.get_doc(doctype, row.name) + upserts.append(to_payload(doc)) + except frappe.DoesNotExistError: + continue + except Exception as e: + frappe.log_error(f"changes_since serialize {doctype}/{row.name}: {e}", "Sync API") + continue + + next_since = upserts[-1].get("modified") if upserts else None + + # Tombstones — bounded by same limit to prevent unbounded response + tombstones = frappe.get_all( + "Sync Tombstone", + filters={"reference_doctype": doctype, "deleted_at": (">", since)}, + fields=["reference_name", "deleted_at"], + order_by="deleted_at asc", + limit_page_length=limit, + ) + + return { + "upserts": upserts, + "tombstones": [{"reference_name": t.reference_name, "deleted_at": str(t.deleted_at)} for t in tombstones], + "next_since": next_since, + "has_more": has_more, + } diff --git a/pos_next/sync/api/health.py b/pos_next/sync/api/health.py new file mode 100644 index 00000000..2c0c671a --- /dev/null +++ b/pos_next/sync/api/health.py @@ -0,0 +1,33 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Health endpoint for sync connectivity checks.""" + +import frappe +from frappe.utils import now_datetime + + +@frappe.whitelist(allow_guest=True) +def health(): + """ + Return server time, version info, and site role. + Public — no auth required. Used by branch to check connectivity. + """ + frappe_version = frappe.__version__ + pos_next_version = "unknown" + try: + import pos_next + pos_next_version = getattr(pos_next, "__version__", "unknown") + except Exception: + pass + + site_role = frappe.db.get_value( + "Sync Site Config", {"enabled": 1}, "site_role" + ) or "unconfigured" + + return { + "server_time": str(now_datetime()), + "frappe_version": frappe_version, + "pos_next_version": pos_next_version, + "site_role": site_role, + } diff --git a/pos_next/sync/api/ingest.py b/pos_next/sync/api/ingest.py new file mode 100644 index 00000000..c1566efd --- /dev/null +++ b/pos_next/sync/api/ingest.py @@ -0,0 +1,59 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Central-side API: receive and apply pushed transactions from branches.""" + +import json + +import frappe + +from pos_next.sync import registry +from pos_next.sync.adapters.base import BaseSyncAdapter +from pos_next.sync.payload import compute_hash +from pos_next.sync.masters_puller import _ensure_adapters_loaded +from pos_next.pos_next.doctype.sync_record_state.sync_record_state import SyncRecordState + + +@frappe.whitelist() +def ingest(doctype, branch_code, records): + """ + Receive a batch of records pushed from a branch. + + Returns: {"results": [{name, sync_uuid, status, error?}, ...]} + """ + _ensure_adapters_loaded() + + if isinstance(records, str): + records = json.loads(records) + + adapter = registry.get_adapter(doctype) + if not adapter: + adapter = BaseSyncAdapter() + adapter.doctype = doctype + + results = [] + for record in records: + operation = record.get("operation", "update") + payload = record.get("payload", {}) + name = payload.get("name", "") + sync_uuid = payload.get("sync_uuid", "") + + try: + # Idempotency: skip if sync_uuid already exists locally + if sync_uuid and frappe.db.exists(doctype, {"sync_uuid": sync_uuid}): + results.append({"name": name, "sync_uuid": sync_uuid, "status": "skipped"}) + continue + + adapter.validate_incoming(payload) + adapter.apply_incoming(payload, operation) + + payload_hash = compute_hash(payload) + SyncRecordState.upsert(doctype, name, payload_hash, branch_code) + + results.append({"name": name, "sync_uuid": sync_uuid, "status": "ok"}) + except Exception as e: + frappe.log_error(f"Ingest {doctype}/{name}: {e}", "Sync Ingest") + results.append({"name": name, "sync_uuid": sync_uuid, "status": "error", "error": str(e)[:500]}) + + frappe.db.commit() + return {"results": results} diff --git a/pos_next/sync/api/status.py b/pos_next/sync/api/status.py new file mode 100644 index 00000000..30a6b1f9 --- /dev/null +++ b/pos_next/sync/api/status.py @@ -0,0 +1,61 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Sync status API — returns dashboard data for the Sync Site Config form.""" + +import frappe + + +@frappe.whitelist() +def get_sync_status(): + """ + Return sync status summary for the current site. + Used by the Sync Site Config form to show a live dashboard. + """ + cfg = frappe.db.get_value( + "Sync Site Config", + {"enabled": 1}, + ["name", "site_role", "branch_code", "last_pull_masters_at", "last_sync_error"], + as_dict=True, + ) + if not cfg: + return {"configured": False} + + # Outbox stats + outbox_pending = frappe.db.count("Sync Outbox", {"sync_status": "pending"}) + outbox_failed = frappe.db.count("Sync Outbox", {"sync_status": "failed"}) + outbox_dead = frappe.db.count("Sync Dead Letter") + + # Conflict queue + conflicts_pending = frappe.db.count("Sync Conflict", {"status": "pending"}) + + # Recent sync logs + recent_logs = frappe.get_all( + "Sync Log", + fields=["operation", "status", "duration_ms", "records_touched", "error", "creation"], + order_by="creation desc", + limit_page_length=10, + ) + + # Watermarks + watermarks = frappe.get_all( + "Sync Watermark", + fields=["doctype_name", "last_modified", "last_pulled_at", "records_pulled"], + order_by="doctype_name asc", + ) + + return { + "configured": True, + "site_role": cfg.site_role, + "branch_code": cfg.branch_code, + "last_pull_masters_at": str(cfg.last_pull_masters_at) if cfg.last_pull_masters_at else None, + "last_sync_error": cfg.last_sync_error, + "outbox": { + "pending": outbox_pending, + "failed": outbox_failed, + "dead": outbox_dead, + }, + "conflicts_pending": conflicts_pending, + "recent_logs": recent_logs, + "watermarks": watermarks, + } diff --git a/pos_next/sync/auth.py b/pos_next/sync/auth.py new file mode 100644 index 00000000..57e3bd33 --- /dev/null +++ b/pos_next/sync/auth.py @@ -0,0 +1,106 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Username/password session login against central.""" + +import requests + +from pos_next.sync.defaults import HTTP_TIMEOUT_SECONDS, LOGIN_TIMEOUT_SECONDS +from pos_next.sync.exceptions import SyncAuthError, SyncTransportError + + +class SyncSession: + """ + Holds a logged-in session against central. + + Login happens lazily on first use. On a 401 response, we automatically + re-log in once and retry the original request. + """ + + def __init__(self, central_url, username, password): + self.central_url = central_url.rstrip("/") + self.username = username + self.password = password + self._sid = None + + def login(self): + """POST /api/method/login. Cache sid in memory.""" + if self._sid: + return + url = f"{self.central_url}/api/method/login" + try: + resp = requests.post( + url, + data={"usr": self.username, "pwd": self.password}, + timeout=LOGIN_TIMEOUT_SECONDS, + ) + resp.raise_for_status() + except requests.HTTPError as e: + raise SyncAuthError(f"Login failed for {self.username}: {e}") + except requests.RequestException as e: + raise SyncTransportError(f"Login request failed: {e}") + sid = resp.cookies.get("sid") + if not sid: + raise SyncAuthError("Login response did not include sid cookie") + self._sid = sid + + def _cookies(self): + return {"sid": self._sid} if self._sid else {} + + def post(self, path, data=None, json=None): + """Authenticated POST. On 401, re-login and retry once.""" + self.login() + url = f"{self.central_url}{path}" + resp = requests.post( + url, + data=data, + json=json, + cookies=self._cookies(), + timeout=HTTP_TIMEOUT_SECONDS, + ) + if resp.status_code == 401: + self._sid = None + self.login() + resp = requests.post( + url, + data=data, + json=json, + cookies=self._cookies(), + timeout=HTTP_TIMEOUT_SECONDS, + ) + return resp + + def get(self, path, params=None): + """Authenticated GET. On 401, re-login and retry once.""" + self.login() + url = f"{self.central_url}{path}" + resp = requests.get( + url, + params=params, + cookies=self._cookies(), + timeout=HTTP_TIMEOUT_SECONDS, + ) + if resp.status_code == 401: + self._sid = None + self.login() + resp = requests.get( + url, + params=params, + cookies=self._cookies(), + timeout=HTTP_TIMEOUT_SECONDS, + ) + return resp + + def logout(self): + """POST /api/method/logout. Best-effort; ignore errors.""" + if not self._sid: + return + try: + requests.post( + f"{self.central_url}/api/method/logout", + cookies=self._cookies(), + timeout=LOGIN_TIMEOUT_SECONDS, + ) + except requests.RequestException: + pass + self._sid = None diff --git a/pos_next/sync/conflict.py b/pos_next/sync/conflict.py new file mode 100644 index 00000000..b0daa159 --- /dev/null +++ b/pos_next/sync/conflict.py @@ -0,0 +1,75 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Conflict resolution strategies.""" + +from pos_next.sync.defaults import CONFLICT_RULES +from pos_next.sync.exceptions import SyncConflictError + + +def resolve(local, incoming, rule): + """ + Apply a conflict resolution rule to two payloads. + + Returns (winner_payload, verdict) where verdict is one of: + "local", "incoming", "merged". + + Raises: + SyncConflictError if rule is "Manual". + ValueError if rule is not recognized. + """ + if rule not in CONFLICT_RULES: + raise ValueError(f"Unknown conflict rule: {rule}") + + if rule == "Manual": + raise SyncConflictError( + f"Manual resolution required for {incoming.get('name', '')}" + ) + + if rule == "Central-Wins": + return incoming, "incoming" + + if rule == "Branch-Wins": + return incoming, "incoming" + + if rule == "Last-Write-Wins": + local_ts = str(local.get("modified") or "") + incoming_ts = str(incoming.get("modified") or "") + if incoming_ts >= local_ts: + return incoming, "incoming" + return local, "local" + + if rule == "Field-Level-LWW": + return _merge_field_level(local, incoming), "merged" + + raise ValueError(f"Unimplemented conflict rule: {rule}") + + +def _merge_field_level(local, incoming): + """ + Merge two payloads field-by-field based on per-field timestamps. + + Both payloads must carry a `__field_ts` dict mapping fieldname → timestamp. + For each field, the value from whichever payload has the newer timestamp wins. + Fields with no timestamp entry default to local's value. + """ + local_ts = local.get("__field_ts", {}) or {} + incoming_ts = incoming.get("__field_ts", {}) or {} + + merged = dict(local) + all_fields = set(local.keys()) | set(incoming.keys()) + all_fields.discard("__field_ts") + + for field in all_fields: + l_ts = str(local_ts.get(field, "")) + i_ts = str(incoming_ts.get(field, "")) + if i_ts and i_ts > l_ts: + merged[field] = incoming.get(field) + + # Merge the timestamp maps too — keep max per field + merged_ts = dict(local_ts) + for f, ts in incoming_ts.items(): + if str(ts) > str(merged_ts.get(f, "")): + merged_ts[f] = ts + merged["__field_ts"] = merged_ts + return merged diff --git a/pos_next/sync/defaults.py b/pos_next/sync/defaults.py new file mode 100644 index 00000000..68c90b52 --- /dev/null +++ b/pos_next/sync/defaults.py @@ -0,0 +1,39 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Centralized defaults for the sync engine.""" + +DEFAULT_PUSH_INTERVAL_SECONDS = 60 +DEFAULT_PULL_MASTERS_INTERVAL_SECONDS = 300 +DEFAULT_PULL_FAILOVER_INTERVAL_SECONDS = 120 + +DEFAULT_BATCH_SIZE = 100 +MAX_ATTEMPTS_BEFORE_DEAD = 10 +REPLAY_REJECT_HOURS = 24 + +HTTP_TIMEOUT_SECONDS = 30 +LOGIN_TIMEOUT_SECONDS = 10 + +# Outbox back-pressure thresholds +OUTBOX_WARN_DEPTH = 1000 +OUTBOX_CRITICAL_DEPTH = 10000 + +# Retention +HISTORY_ARCHIVE_AFTER_DAYS = 7 +HISTORY_PURGE_AFTER_DAYS = 90 +TOMBSTONE_RETAIN_DAYS = 90 + +# Conflict rules +CONFLICT_RULES = { + "Last-Write-Wins", + "Central-Wins", + "Branch-Wins", + "Field-Level-LWW", + "Manual", +} +CDC_STRATEGIES = {"Outbox", "Watermark"} +DIRECTIONS = {"Central→Branch", "Branch→Central", "Bidirectional"} + +# Direction subsets for filtering rules +DIRECTIONS_PULL = frozenset({"Central→Branch", "Bidirectional"}) +DIRECTIONS_PUSH = frozenset({"Branch→Central", "Bidirectional"}) diff --git a/pos_next/sync/exceptions.py b/pos_next/sync/exceptions.py new file mode 100644 index 00000000..90ce3f1a --- /dev/null +++ b/pos_next/sync/exceptions.py @@ -0,0 +1,34 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Sync engine exception hierarchy.""" + + +class SyncError(Exception): + """Base class for all sync engine errors.""" + pass + + +class SyncAuthError(SyncError): + """Authentication against central failed (bad credentials, expired session).""" + pass + + +class SyncTransportError(SyncError): + """HTTP/network-level failure talking to central.""" + pass + + +class SyncConflictError(SyncError): + """A conflict was detected and resolution is deferred to human review.""" + pass + + +class SyncValidationError(SyncError): + """Incoming payload failed adapter.validate_incoming().""" + pass + + +class SyncReplayRejected(SyncError): + """Payload rejected because created_at is older than the replay window.""" + pass diff --git a/pos_next/sync/hooks.py b/pos_next/sync/hooks.py new file mode 100644 index 00000000..273a48e7 --- /dev/null +++ b/pos_next/sync/hooks.py @@ -0,0 +1,20 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Sync doc_event hooks — tombstone recording on master deletion.""" + +import frappe + + +def write_tombstone_on_trash(doc, method=None): + """ + on_trash hook for synced master DocTypes. + Records a tombstone so branches can replay the delete. + """ + from pos_next.pos_next.doctype.sync_tombstone.sync_tombstone import SyncTombstone + try: + SyncTombstone.record(doc.doctype, doc.name) + frappe.db.commit() + except Exception: + # Don't block the delete if tombstone creation fails + frappe.log_error(f"Tombstone write failed for {doc.doctype}/{doc.name}", "Sync Hooks") diff --git a/pos_next/sync/hooks_outbox.py b/pos_next/sync/hooks_outbox.py new file mode 100644 index 00000000..1cabfb10 --- /dev/null +++ b/pos_next/sync/hooks_outbox.py @@ -0,0 +1,74 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Outbox hooks — capture transaction doc_events into Sync Outbox.""" + +import json + +import frappe + +from pos_next.sync.payload import to_payload + + +_METHOD_MAP = { + "on_submit": "submit", + "on_cancel": "cancel", + "on_update": "update", + "on_update_after_submit": "update", + "after_insert": "insert", + "on_trash": "delete", +} + + +def _method_to_operation(method): + """Convert Frappe doc_event method name to outbox operation.""" + return _METHOD_MAP.get(method, "update") + + +def _is_branch_site(): + """Check if this site has an enabled Branch Sync Site Config.""" + cache_key = "pos_next_is_branch" + result = frappe.cache().get_value(cache_key) + if result is None: + result = bool(frappe.db.get_value( + "Sync Site Config", {"site_role": "Branch", "enabled": 1}, "name" + )) + frappe.cache().set_value(cache_key, result, expires_in_sec=300) + return result + + +def _get_priority(doctype_name): + """Get sync priority for a DocType from cache or registry.""" + cache_key = f"pos_next_sync_priority_{doctype_name}" + prio = frappe.cache().get_value(cache_key) + if prio is None: + prio = frappe.db.get_value( + "Sync DocType Rule", + {"doctype_name": doctype_name, "parenttype": "Sync Site Config"}, + "priority", + ) or 100 + frappe.cache().set_value(cache_key, int(prio), expires_in_sec=300) + return int(prio) + + +def enqueue_to_outbox(doc, method=None): + """ + Generic doc_event hook: capture document change into Sync Outbox. + Only fires on Branch sites with sync enabled. + """ + if not _is_branch_site(): + return + + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + + operation = _method_to_operation(method) + payload = json.dumps(to_payload(doc), default=str) + priority = _get_priority(doc.doctype) + + SyncOutbox.enqueue( + reference_doctype=doc.doctype, + reference_name=doc.name, + operation=operation, + payload=payload, + priority=priority, + ) diff --git a/pos_next/sync/hooks_uuid.py b/pos_next/sync/hooks_uuid.py new file mode 100644 index 00000000..8febc46e --- /dev/null +++ b/pos_next/sync/hooks_uuid.py @@ -0,0 +1,34 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Auto-fill sync_uuid on creation of sync-tracked documents.""" + +import uuid + +import frappe + + +def set_sync_uuid_if_missing(doc, method=None): + """Before-insert hook: set sync_uuid to a fresh UUID4 if not already set.""" + if getattr(doc, "sync_uuid", None): + return + doc.sync_uuid = str(uuid.uuid4()) + + +def set_origin_branch_if_missing(doc, method=None): + """Before-insert hook: set origin_branch to this site's branch_code if empty.""" + if getattr(doc, "origin_branch", None): + return + branch_code = _get_branch_code() + if branch_code: + doc.origin_branch = branch_code + + +def _get_branch_code(): + """Get this site's branch_code, cached for the process lifetime.""" + cache_key = "pos_next_branch_code" + code = frappe.cache().get_value(cache_key) + if code is None: + code = frappe.db.get_value("Sync Site Config", {"site_role": "Branch"}, "branch_code") or "" + frappe.cache().set_value(cache_key, code, expires_in_sec=300) + return code or None diff --git a/pos_next/sync/masters_puller.py b/pos_next/sync/masters_puller.py new file mode 100644 index 00000000..b7bed3b4 --- /dev/null +++ b/pos_next/sync/masters_puller.py @@ -0,0 +1,209 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Branch-side masters puller — pulls Central→Branch DocTypes via watermark.""" + +import importlib +import pkgutil +import time + +import frappe +from frappe.utils import now_datetime, time_diff_in_seconds + +from pos_next.sync import registry +from pos_next.sync.defaults import ( + DEFAULT_BATCH_SIZE, + DEFAULT_PULL_MASTERS_INTERVAL_SECONDS, + DIRECTIONS_PULL, +) +from pos_next.sync.payload import compute_hash +from pos_next.pos_next.doctype.sync_log.sync_log import SyncLog +from pos_next.pos_next.doctype.sync_record_state.sync_record_state import SyncRecordState +from pos_next.pos_next.doctype.sync_watermark.sync_watermark import SyncWatermark + + +def _ensure_adapters_loaded(): + """Auto-discover and import all adapter modules so they register with the registry.""" + import pos_next.sync.adapters as _pkg + for info in pkgutil.iter_modules(_pkg.__path__, _pkg.__name__ + "."): + if not info.name.endswith(".base"): + importlib.import_module(info.name) + + +def pull_if_due(): + """ + Scheduler entry point (called every minute by cron). + Checks if this site is a Branch and if enough time has passed since last pull. + """ + cfg_name = frappe.db.get_value("Sync Site Config", {"site_role": "Branch", "enabled": 1}, "name") + if not cfg_name: + return + + cfg = frappe.get_doc("Sync Site Config", cfg_name) + interval = cfg.pull_masters_interval_seconds or DEFAULT_PULL_MASTERS_INTERVAL_SECONDS + + if cfg.last_pull_masters_at: + elapsed = time_diff_in_seconds(now_datetime(), cfg.last_pull_masters_at) + if elapsed < interval: + return + + _ensure_adapters_loaded() + + try: + from pos_next.sync.transport import build_session_from_config + session = build_session_from_config() + puller = MastersPuller(session) + puller.run(cfg) + except Exception as e: + frappe.db.set_value("Sync Site Config", cfg_name, "last_sync_error", str(e)[:500]) + frappe.db.commit() + _log("pull_masters", "failure", error=str(e)) + + +class MastersPuller: + """Pulls master data from central for all Central→Branch DocTypes.""" + + def __init__(self, session): + self.session = session + + def run(self, cfg): + """Execute a full pull cycle for all enabled Central→Branch rules.""" + start = time.time() + + rules = self._get_pull_rules(cfg) + total_upserted = 0 + total_deleted = 0 + total_errors = 0 + + for rule in rules: + dt = rule.doctype_name + batch_size = rule.batch_size or DEFAULT_BATCH_SIZE + watermark = self._get_watermark(dt) + adapter = registry.get_adapter(dt) + + upserted, deleted, errors = self._pull_one_doctype(dt, watermark, batch_size, adapter) + total_upserted += upserted + total_deleted += deleted + total_errors += errors + + frappe.db.set_value("Sync Site Config", cfg.name, "last_pull_masters_at", now_datetime()) + frappe.db.commit() + + duration_ms = int((time.time() - start) * 1000) + _log( + "pull_masters", "success" if total_errors == 0 else "partial", + duration_ms=duration_ms, + records_touched=total_upserted + total_deleted, + context={"upserted": total_upserted, "deleted": total_deleted, "errors": total_errors}, + ) + + def _get_pull_rules(self, cfg): + """Get enabled Central→Branch rules sorted by priority.""" + rules = [ + rule for rule in (cfg.synced_doctypes or []) + if rule.enabled and rule.direction in DIRECTIONS_PULL + ] + rules.sort(key=lambda r: r.priority or 100) + return rules + + def _get_watermark(self, doctype_name): + """Get last_modified watermark for a DocType, or epoch.""" + wm = SyncWatermark.get_for(doctype_name) + if wm and wm.last_modified: + return str(wm.last_modified) + return "2000-01-01 00:00:00" + + def _pull_one_doctype(self, doctype_name, since, batch_size, adapter=None): + """Pull all pages for one DocType. Returns (upserted, deleted, errors).""" + total_upserted = 0 + total_deleted = 0 + total_errors = 0 + current_since = since + + # Fall back to default adapter if none registered + if not adapter: + from pos_next.sync.adapters.base import BaseSyncAdapter + adapter = BaseSyncAdapter() + adapter.doctype = doctype_name + + while True: + try: + resp = self.session.get( + "/api/method/pos_next.sync.api.changes.changes_since", + params={"doctype": doctype_name, "since": current_since, "limit": batch_size}, + ) + if resp.status_code != 200: + total_errors += 1 + break + data = resp.json().get("message", {}) + if not data: + break + except Exception as e: + total_errors += 1 + frappe.log_error(f"Pull {doctype_name}: {e}", "MastersPuller") + break + + # Apply upserts + for payload in data.get("upserts", []): + try: + if self._apply_upsert(doctype_name, payload, adapter): + total_upserted += 1 + except Exception as e: + total_errors += 1 + frappe.log_error(f"Apply {doctype_name}/{payload.get('name')}: {e}", "MastersPuller") + + # Apply tombstones + for tomb in data.get("tombstones", []): + try: + self._apply_tombstone(doctype_name, tomb["reference_name"]) + total_deleted += 1 + except Exception as e: + total_errors += 1 + frappe.log_error(f"Tombstone {doctype_name}/{tomb.get('reference_name')}: {e}", "MastersPuller") + + # Advance watermark and commit the batch + next_since = data.get("next_since") + if next_since: + SyncWatermark.upsert(doctype_name, next_since, records_pulled=total_upserted) + current_since = next_since + + frappe.db.commit() + + if not data.get("has_more"): + break + + return total_upserted, total_deleted, total_errors + + def _apply_upsert(self, doctype_name, payload, adapter): + """Apply a single upsert via the adapter. Returns True if applied, False if skipped.""" + payload_hash = compute_hash(payload) + existing_hash = SyncRecordState.get_hash(doctype_name, payload.get("name", "")) + if existing_hash == payload_hash: + return False + + adapter.validate_incoming(payload) + adapter.apply_incoming(payload, "update") + SyncRecordState.upsert(doctype_name, payload.get("name", ""), payload_hash, "central") + return True + + def _apply_tombstone(self, doctype_name, reference_name): + """Delete a local record that was deleted on central.""" + if frappe.db.exists(doctype_name, reference_name): + frappe.delete_doc(doctype_name, reference_name, ignore_permissions=True, force=True) + # Clean up record state + frappe.db.delete("Sync Record State", { + "reference_doctype": doctype_name, + "reference_name": reference_name, + }) + + +def _log(operation, status, duration_ms=0, records_touched=0, error=None, context=None): + """Write a Sync Log entry.""" + try: + SyncLog.record( + operation=operation, status=status, duration_ms=duration_ms, + records_touched=records_touched, error=error, context=context, + ) + frappe.db.commit() + except Exception: + pass diff --git a/pos_next/sync/outbox_drainer.py b/pos_next/sync/outbox_drainer.py new file mode 100644 index 00000000..f0c144c7 --- /dev/null +++ b/pos_next/sync/outbox_drainer.py @@ -0,0 +1,196 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Branch-side outbox drainer — pushes transactions to central.""" + +import json +from datetime import timedelta + +import frappe +from frappe.utils import now_datetime, time_diff_in_seconds + +from pos_next.sync.defaults import ( + DEFAULT_BATCH_SIZE, + DEFAULT_PUSH_INTERVAL_SECONDS, + MAX_ATTEMPTS_BEFORE_DEAD, +) +from pos_next.sync.masters_puller import _ensure_adapters_loaded +from pos_next.pos_next.doctype.sync_log.sync_log import SyncLog + + +def push_if_due(): + """ + Scheduler entry point (called every minute by cron). + Checks if this site is a Branch and if enough time has passed since last push. + """ + cfg_name = frappe.db.get_value("Sync Site Config", {"site_role": "Branch", "enabled": 1}, "name") + if not cfg_name: + return + + cfg = frappe.get_doc("Sync Site Config", cfg_name) + interval = cfg.push_interval_seconds or DEFAULT_PUSH_INTERVAL_SECONDS + + if cfg.last_push_at: + elapsed = time_diff_in_seconds(now_datetime(), cfg.last_push_at) + if elapsed < interval: + return + + _ensure_adapters_loaded() + + try: + from pos_next.sync.transport import build_session_from_config + session = build_session_from_config() + drainer = OutboxDrainer(session, branch_code=cfg.branch_code) + acked, failed, dead = drainer.drain() + + frappe.db.set_value("Sync Site Config", cfg_name, "last_push_at", now_datetime()) + frappe.db.commit() + + _log( + "push_outbox", "success" if (failed + dead) == 0 else "partial", + records_touched=acked + failed + dead, + context={"acked": acked, "failed": failed, "dead": dead}, + ) + except Exception as e: + frappe.db.set_value("Sync Site Config", cfg_name, "last_sync_error", str(e)[:500]) + frappe.db.commit() + _log("push_outbox", "failure", error=str(e)) + + +class OutboxDrainer: + """Drains pending Sync Outbox rows by POSTing to central's ingest API.""" + + def __init__(self, session, branch_code): + self.session = session + self.branch_code = branch_code + + def drain(self): + """Process all drainable outbox rows. Returns (acked, failed, dead).""" + total_acked = 0 + total_failed = 0 + total_dead = 0 + + rows = self._get_drainable_rows() + if not rows: + return 0, 0, 0 + + # Group by doctype + by_doctype = {} + for row in rows: + by_doctype.setdefault(row.reference_doctype, []).append(row) + + for dt, dt_rows in by_doctype.items(): + acked, failed, dead = self._push_batch(dt, dt_rows) + total_acked += acked + total_failed += failed + total_dead += dead + + frappe.db.commit() + return total_acked, total_failed, total_dead + + def _get_drainable_rows(self): + """Get outbox rows ready for push (pending or failed with backoff expired).""" + return frappe.db.sql(""" + SELECT name, reference_doctype, reference_name, operation, payload, attempts + FROM `tabSync Outbox` + WHERE sync_status IN ('pending', 'failed') + AND (next_attempt_at IS NULL OR next_attempt_at <= %(now)s) + ORDER BY priority ASC, creation ASC + LIMIT %(limit)s + """, {"now": now_datetime(), "limit": DEFAULT_BATCH_SIZE}, as_dict=True) + + def _push_batch(self, doctype, rows): + """Push a batch of rows for one DocType to central. Returns (acked, failed, dead).""" + acked = 0 + failed = 0 + dead = 0 + + records = [] + for row in rows: + payload = row.payload + if isinstance(payload, str): + try: + payload = json.loads(payload) + except json.JSONDecodeError: + payload = {} + records.append({"operation": row.operation, "payload": payload}) + + try: + resp = self.session.post( + "/api/method/pos_next.sync.api.ingest.ingest", + json={"doctype": doctype, "branch_code": self.branch_code, "records": records}, + ) + if resp.status_code != 200: + for row in rows: + self._mark_failed(row, f"HTTP {resp.status_code}") + failed += 1 + return acked, failed, dead + + results = resp.json().get("message", {}).get("results", []) + for i, row in enumerate(rows): + if i < len(results): + result = results[i] + if result.get("status") in ("ok", "skipped"): + self._mark_acked(row) + acked += 1 + else: + error = result.get("error", "Unknown error") + if self._should_dead_letter(row): + self._move_to_dead_letter(row, error) + dead += 1 + else: + self._mark_failed(row, error) + failed += 1 + else: + self._mark_failed(row, "No result from central") + failed += 1 + + except Exception as e: + for row in rows: + self._mark_failed(row, str(e)) + failed += 1 + + return acked, failed, dead + + def _mark_acked(self, row): + frappe.db.set_value("Sync Outbox", row.name, { + "sync_status": "acked", + "acked_at": now_datetime(), + }) + + def _mark_failed(self, row, error): + attempts = (row.attempts or 0) + 1 + backoff_seconds = min(2 ** attempts, 3600) + frappe.db.set_value("Sync Outbox", row.name, { + "sync_status": "failed", + "attempts": attempts, + "last_error": str(error)[:500], + "next_attempt_at": now_datetime() + timedelta(seconds=backoff_seconds), + }) + + def _should_dead_letter(self, row): + return (row.attempts or 0) >= MAX_ATTEMPTS_BEFORE_DEAD + + def _move_to_dead_letter(self, row, error): + frappe.get_doc({ + "doctype": "Sync Dead Letter", + "reference_doctype": row.reference_doctype, + "reference_name": row.reference_name, + "operation": row.operation, + "last_error": str(error)[:500], + "attempts": (row.attempts or 0) + 1, + "payload": row.payload, + "moved_at": now_datetime(), + }).insert(ignore_permissions=True) + frappe.delete_doc("Sync Outbox", row.name, ignore_permissions=True, force=True) + + +def _log(operation, status, duration_ms=0, records_touched=0, error=None, context=None): + try: + SyncLog.record( + operation=operation, status=status, duration_ms=duration_ms, + records_touched=records_touched, error=error, context=context, + ) + frappe.db.commit() + except Exception: + pass diff --git a/pos_next/sync/payload.py b/pos_next/sync/payload.py new file mode 100644 index 00000000..dca7bf1f --- /dev/null +++ b/pos_next/sync/payload.py @@ -0,0 +1,46 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Payload serialization, hashing, and meta-stripping helpers.""" + +import hashlib +import json + + +# Fields we strip before hashing (they change on every save, aren't semantic) +META_FIELDS = { + "modified", + "modified_by", + "owner", + "creation", + "idx", + "_user_tags", + "_comments", + "_assign", + "_liked_by", +} + + +def strip_meta(payload): + """Return a copy of payload with server-side meta fields removed.""" + return {k: v for k, v in payload.items() if k not in META_FIELDS} + + +def compute_hash(payload): + """ + Return SHA256 hex of a canonical JSON serialization of the payload, + excluding meta fields. Key order does not affect the hash. + """ + clean = strip_meta(payload) + canonical = json.dumps(clean, sort_keys=True, default=str, ensure_ascii=True) + return hashlib.sha256(canonical.encode("utf-8")).hexdigest() + + +def to_payload(doc): + """ + Convert a Frappe Document to a sync payload dict. + Includes children via Frappe's as_dict(); caller strips meta as needed. + """ + if hasattr(doc, "as_dict"): + return doc.as_dict(convert_dates_to_str=True) + return dict(doc) diff --git a/pos_next/sync/registry.py b/pos_next/sync/registry.py new file mode 100644 index 00000000..179e0f78 --- /dev/null +++ b/pos_next/sync/registry.py @@ -0,0 +1,29 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Sync adapter registry. Adapters register themselves at import time.""" + +_REGISTRY = {} + + +def register(adapter_class): + """Register an adapter class. adapter_class.doctype must be set.""" + if not getattr(adapter_class, "doctype", None): + raise ValueError(f"Adapter {adapter_class.__name__} has no doctype attribute") + _REGISTRY[adapter_class.doctype] = adapter_class + + +def get_adapter(doctype): + """Return an instance of the adapter for a DocType, or None.""" + cls = _REGISTRY.get(doctype) + return cls() if cls else None + + +def list_registered(): + """Return a list of DocType names that have registered adapters.""" + return list(_REGISTRY.keys()) + + +def clear(): + """Clear the registry. For tests only.""" + _REGISTRY.clear() diff --git a/pos_next/sync/seeds.py b/pos_next/sync/seeds.py new file mode 100644 index 00000000..55479c1d --- /dev/null +++ b/pos_next/sync/seeds.py @@ -0,0 +1,64 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Default Sync DocType Rule seeds applied to new Sync Site Config records.""" + + +DEFAULT_SYNC_RULES = [ + # --- Masters pulled central → branch, Central-Wins --- + {"doctype_name": "Item", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 100, "batch_size": 100}, + {"doctype_name": "Item Price", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + {"doctype_name": "Item Group", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 100, "batch_size": 100}, + {"doctype_name": "Item Barcode", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 100, "batch_size": 100}, + {"doctype_name": "UOM", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 100, "batch_size": 100}, + {"doctype_name": "Price List", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 100, "batch_size": 100}, + {"doctype_name": "POS Profile", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 90, "batch_size": 100}, + {"doctype_name": "POS Settings", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 90, "batch_size": 100}, + {"doctype_name": "POS Offer", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 120, "batch_size": 100}, + {"doctype_name": "POS Coupon", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 120, "batch_size": 100}, + {"doctype_name": "Loyalty Program", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 120, "batch_size": 100}, + {"doctype_name": "Warehouse", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 90, "batch_size": 100}, + {"doctype_name": "Branch", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 90, "batch_size": 100}, + {"doctype_name": "Company", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 80, "batch_size": 100}, + {"doctype_name": "Currency", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 80, "batch_size": 100}, + {"doctype_name": "Mode of Payment", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + {"doctype_name": "Sales Taxes and Charges Template", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + {"doctype_name": "Item Tax Template", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + {"doctype_name": "User", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 80, "batch_size": 100}, + {"doctype_name": "Role Profile", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 80, "batch_size": 100}, + {"doctype_name": "Employee", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + {"doctype_name": "Sales Person", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + {"doctype_name": "Customer Group", "direction": "Central→Branch", "cdc_strategy": "Watermark", "conflict_rule": "Central-Wins", "priority": 110, "batch_size": 100}, + # --- Customer: bidirectional, Field-Level-LWW --- + {"doctype_name": "Customer", "direction": "Bidirectional", "cdc_strategy": "Outbox", "conflict_rule": "Field-Level-LWW", "priority": 50, "batch_size": 100}, + # --- Transactions branch → central, Branch-Wins --- + {"doctype_name": "POS Opening Shift", "direction": "Branch→Central", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 10, "batch_size": 50}, + {"doctype_name": "POS Closing Shift", "direction": "Branch→Central", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 20, "batch_size": 50}, + {"doctype_name": "Sales Invoice", "direction": "Branch→Central", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 50, "batch_size": 100}, + {"doctype_name": "Payment Entry", "direction": "Branch→Central", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 50, "batch_size": 100}, + {"doctype_name": "Stock Ledger Entry", "direction": "Branch→Central", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 60, "batch_size": 200}, + {"doctype_name": "Offline Invoice Sync","direction": "Branch→Central", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 70, "batch_size": 100}, + # --- Wallet bidirectional --- + {"doctype_name": "Wallet", "direction": "Bidirectional", "cdc_strategy": "Outbox", "conflict_rule": "Field-Level-LWW", "priority": 60, "batch_size": 100}, + {"doctype_name": "Wallet Transaction", "direction": "Bidirectional", "cdc_strategy": "Outbox", "conflict_rule": "Branch-Wins", "priority": 60, "batch_size": 100}, +] + + +def apply_seeds_to_config(config_doc): + """ + Populate synced_doctypes on a Sync Site Config doc with DEFAULT_SYNC_RULES. + Only adds rules that don't already exist on the config (by doctype_name). + """ + existing = {row.doctype_name for row in (config_doc.synced_doctypes or [])} + added = 0 + for rule in DEFAULT_SYNC_RULES: + if rule["doctype_name"] in existing: + continue + config_doc.append("synced_doctypes", { + **rule, + "enabled": 1, + }) + added += 1 + if added: + config_doc.save(ignore_permissions=True) + return added diff --git a/pos_next/sync/tests/__init__.py b/pos_next/sync/tests/__init__.py new file mode 100644 index 00000000..e69de29b diff --git a/pos_next/sync/tests/_setup_multi_site.py b/pos_next/sync/tests/_setup_multi_site.py new file mode 100644 index 00000000..b9b5bc70 --- /dev/null +++ b/pos_next/sync/tests/_setup_multi_site.py @@ -0,0 +1,86 @@ +""" +Setup helpers for the two-bench dev sync environment. + +Topology: + frappe-bench (port 8000) → Central (site: pos-central) + frappe-bench-16 (port 8001) → Branch (site: dev.pos) + +Usage from each bench: + # On frappe-bench (central): + bench --site pos-central execute pos_next.sync.tests._setup_multi_site.setup_as_central + + # On frappe-bench-16 (branch): + bench --site dev.pos execute pos_next.sync.tests._setup_multi_site.setup_as_branch + + # Show current config on either site: + bench --site execute pos_next.sync.tests._setup_multi_site.show_current + + # Cleanup: + bench --site execute pos_next.sync.tests._setup_multi_site.cleanup +""" +import frappe + + +CENTRAL_URL = "http://localhost:8000" +BRANCH_URL = "http://localhost:8001" +BRANCH_CODE = "CAI" + + +def setup_as_branch(): + """Install Branch Sync Site Config on dev.pos pointing at pos-central.""" + frappe.db.delete("Sync Site Config") + frappe.db.commit() + doc = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Branch", + "branch_code": BRANCH_CODE, + "enabled": 1, + "central_url": CENTRAL_URL, + "sync_username": "Administrator", + "sync_password": "admin", + "push_interval_seconds": 60, + "pull_masters_interval_seconds": 300, + "pull_failover_interval_seconds": 120, + }) + doc.insert(ignore_permissions=True) + frappe.db.commit() + print(f"Branch config created: name={doc.name}, branch_code={BRANCH_CODE}, central={CENTRAL_URL}") + + +def setup_as_central(): + """Install Central Sync Site Config on pos-central registering the CAI branch.""" + frappe.db.delete("Sync Site Config") + frappe.db.commit() + doc = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Central", + "branch_code": BRANCH_CODE, + "enabled": 1, + "registered_branch_url": BRANCH_URL, + "notes": f"Branch {BRANCH_CODE} (Cairo), running on frappe-bench-16 port 8001", + }) + doc.insert(ignore_permissions=True) + frappe.db.commit() + print(f"Central config created: name={doc.name}, branch_code={BRANCH_CODE}, branch_url={BRANCH_URL}") + + +def show_current(): + """Print current Sync Site Config state.""" + rows = frappe.get_all( + "Sync Site Config", + fields=["name", "site_role", "branch_code", "enabled", "central_url", "registered_branch_url"], + ) + print(f"Sync Site Configs on this site: {len(rows)}") + for r in rows: + print(f" - {r.name}: role={r.site_role}, branch_code={r.branch_code}, enabled={r.enabled}") + if r.central_url: + print(f" central_url={r.central_url}") + if r.registered_branch_url: + print(f" registered_branch_url={r.registered_branch_url}") + + +def cleanup(): + """Remove all Sync Site Config rows.""" + frappe.db.delete("Sync Site Config") + frappe.db.commit() + print("Cleaned up all Sync Site Config rows") diff --git a/pos_next/sync/tests/_test_cross_bench.py b/pos_next/sync/tests/_test_cross_bench.py new file mode 100644 index 00000000..38e9f018 --- /dev/null +++ b/pos_next/sync/tests/_test_cross_bench.py @@ -0,0 +1,59 @@ +"""Test cross-bench connectivity: branch (dev.pos) → central (pos-central).""" + +from pos_next.sync.auth import SyncSession + + +def test_login_to_central(): + """Branch logs into central via SyncSession and makes an authenticated API call.""" + session = SyncSession( + central_url="http://localhost:8000", + username="Administrator", + password="admin", + ) + try: + session.login() + print(f"LOGIN OK — sid={session._sid[:20]}...") + + # Authenticated GET to central + resp = session.get( + "/api/method/frappe.client.get_count", + params={"doctype": "Sync Site Config"}, + ) + print(f"GET response: status={resp.status_code}, body={resp.json()}") + assert resp.status_code == 200, f"Expected 200, got {resp.status_code}" + + data = resp.json() + assert "message" in data, f"Expected 'message' key, got: {data}" + print(f"Central has {data['message']} Sync Site Config row(s)") + + print("PASS: test_login_to_central") + finally: + session.logout() + print("LOGOUT OK") + + +def test_transport_from_config(): + """Build session from Sync Site Config and verify it works.""" + from pos_next.sync.transport import build_session_from_config + + session = build_session_from_config() + try: + session.login() + print(f"LOGIN via config OK — central_url={session.central_url}") + + resp = session.get( + "/api/method/frappe.client.get_count", + params={"doctype": "Item"}, + ) + assert resp.status_code == 200 + print(f"Central has {resp.json().get('message', '?')} Item(s)") + + print("PASS: test_transport_from_config") + finally: + session.logout() + + +def run_all(): + test_login_to_central() + test_transport_from_config() + print("\nAll Cross-Bench tests PASSED") diff --git a/pos_next/sync/tests/_test_e2e_full_pull.py b/pos_next/sync/tests/_test_e2e_full_pull.py new file mode 100644 index 00000000..f0f98fff --- /dev/null +++ b/pos_next/sync/tests/_test_e2e_full_pull.py @@ -0,0 +1,49 @@ +""" +E2E test: full masters pull cycle respecting priority ordering. + +Run from BRANCH site (dev.pos on frappe-bench-16): + bench --site dev.pos execute pos_next.sync.tests._test_e2e_full_pull.run_all +""" + +import frappe +from pos_next.sync.transport import build_session_from_config +from pos_next.sync.masters_puller import MastersPuller + + +def test_full_pull_cycle(): + """Run a complete pull cycle — Company first, then Warehouse, then Items.""" + # Import adapters to register them + import pos_next.sync.adapters.item + import pos_next.sync.adapters.item_price + import pos_next.sync.adapters.customer + import pos_next.sync.adapters.generic_master + + session = build_session_from_config() + puller = MastersPuller(session) + + # Pull in priority order (like MastersPuller.run does) + priority_order = [ + ("Company", 80), + ("Currency", 80), + ("Warehouse", 90), + ("UOM", 100), + ("Item Group", 100), + ("Item", 100), + ] + + for dt, prio in priority_order: + upserted, deleted, errors = puller._pull_one_doctype(dt, "2000-01-01 00:00:00", 100) + status = "OK" if errors == 0 else f"ERRORS={errors}" + print(f" {dt} (prio {prio}): upserted={upserted}, deleted={deleted}, {status}") + + session.logout() + + # Verify Warehouses arrived (they depend on Company being pulled first) + wh_count = frappe.db.count("Warehouse") + print(f"\nWarehouses on branch after full pull: {wh_count}") + print("PASS: test_full_pull_cycle") + + +def run_all(): + test_full_pull_cycle() + print("\nAll E2E Full Pull tests PASSED") diff --git a/pos_next/sync/tests/_test_e2e_masters_pull.py b/pos_next/sync/tests/_test_e2e_masters_pull.py new file mode 100644 index 00000000..b67aeeb9 --- /dev/null +++ b/pos_next/sync/tests/_test_e2e_masters_pull.py @@ -0,0 +1,87 @@ +""" +End-to-end integration test: pull Items from central → verify on branch. + +Run from the BRANCH site (dev.pos on frappe-bench-16): + bench --site dev.pos execute pos_next.sync.tests._test_e2e_masters_pull.run_all + +Prerequisites: + - Both benches running (port 8000 central, port 8001 branch) + - Sync Site Config configured on both +""" + +import frappe +from pos_next.sync.transport import build_session_from_config +from pos_next.sync.masters_puller import MastersPuller + + +def test_pull_items_from_central(): + """Pull Items from central and verify they arrive.""" + # Import adapters to register them + import pos_next.sync.adapters.item + import pos_next.sync.adapters.item_price + import pos_next.sync.adapters.customer + import pos_next.sync.adapters.generic_master + + session = build_session_from_config() + + local_count_before = frappe.db.count("Item") + + puller = MastersPuller(session) + watermark = "2000-01-01 00:00:00" + upserted, deleted, errors = puller._pull_one_doctype("Item", watermark, 50) + + print(f"Pulled: upserted={upserted}, deleted={deleted}, errors={errors}") + + local_count_after = frappe.db.count("Item") + print(f"Items before={local_count_before}, after={local_count_after}") + + session.logout() + print("PASS: test_pull_items_from_central") + + +def test_pull_creates_watermark(): + """After pulling, a Sync Watermark record exists for Item.""" + from pos_next.pos_next.doctype.sync_watermark.sync_watermark import SyncWatermark + + wm = SyncWatermark.get_for("Item") + if wm: + print(f"Watermark for Item: last_modified={wm.last_modified}, records_pulled={wm.records_pulled}") + assert wm.last_modified is not None + print("PASS: test_pull_creates_watermark") + else: + print("SKIP: test_pull_creates_watermark (no watermark — central may have no Items)") + + +def test_pull_warehouses_from_central(): + """Pull Warehouses from central via GenericMasterAdapter.""" + import pos_next.sync.adapters.generic_master + + session = build_session_from_config() + puller = MastersPuller(session) + + upserted, deleted, errors = puller._pull_one_doctype("Warehouse", "2000-01-01 00:00:00", 50) + print(f"Warehouses pulled: upserted={upserted}, deleted={deleted}, errors={errors}") + + session.logout() + print("PASS: test_pull_warehouses_from_central") + + +def test_health_endpoint_reachable(): + """Branch can reach central's health endpoint.""" + session = build_session_from_config() + resp = session.get("/api/method/pos_next.sync.api.health.health") + assert resp.status_code == 200, f"Expected 200, got {resp.status_code}" + data = resp.json().get("message", {}) + print(f"Central health: {data}") + assert "server_time" in data + assert "frappe_version" in data + session.logout() + print("PASS: test_health_endpoint_reachable") + + +def run_all(): + test_health_endpoint_reachable() + test_pull_items_from_central() + test_pull_creates_watermark() + test_pull_warehouses_from_central() + print("\nAll E2E Masters Pull tests PASSED") diff --git a/pos_next/sync/tests/_test_e2e_push.py b/pos_next/sync/tests/_test_e2e_push.py new file mode 100644 index 00000000..7169c403 --- /dev/null +++ b/pos_next/sync/tests/_test_e2e_push.py @@ -0,0 +1,51 @@ +""" +E2E: enqueue an outbox row on branch → drain to central → verify on central. + +Run from BRANCH site (dev.pos on frappe-bench-16): + bench --site dev.pos execute pos_next.sync.tests._test_e2e_push.run_all +""" + +import frappe +import json +from pos_next.sync.transport import build_session_from_config +from pos_next.sync.outbox_drainer import OutboxDrainer +from pos_next.sync.masters_puller import _ensure_adapters_loaded + + +def test_push_outbox_to_central(): + """Enqueue a fake outbox row and drain it to central.""" + _ensure_adapters_loaded() + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + + # Clean up previous test rows + frappe.db.delete("Sync Outbox", {"reference_name": "E2E-PUSH-TEST"}) + frappe.db.commit() + + # Enqueue a test row (Warehouse — simple, exists on central) + SyncOutbox.enqueue( + reference_doctype="Warehouse", + reference_name="E2E-PUSH-TEST", + operation="update", + payload=json.dumps({"name": "E2E-PUSH-TEST", "warehouse_name": "E2E Push Test WH"}), + priority=50, + ) + + # Drain to central + session = build_session_from_config() + branch_code = frappe.db.get_value("Sync Site Config", {"site_role": "Branch"}, "branch_code") + drainer = OutboxDrainer(session, branch_code=branch_code) + acked, failed, dead = drainer.drain() + + print(f"Drain result: acked={acked}, failed={failed}, dead={dead}") + assert acked >= 1, f"Expected at least 1 acked, got {acked}" + + status = frappe.db.get_value("Sync Outbox", {"reference_name": "E2E-PUSH-TEST"}, "sync_status") + assert status == "acked", f"Expected acked, got {status}" + + session.logout() + print("PASS: test_push_outbox_to_central") + + +def run_all(): + test_push_outbox_to_central() + print("\nAll E2E Push tests PASSED") diff --git a/pos_next/sync/tests/run_all_tests.py b/pos_next/sync/tests/run_all_tests.py new file mode 100644 index 00000000..b600672c --- /dev/null +++ b/pos_next/sync/tests/run_all_tests.py @@ -0,0 +1,39 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Run every Plan 1 test module and report PASS/FAIL counts.""" + +import traceback + + +TEST_MODULES = [ + "pos_next.sync.tests.test_sync_site_config", + "pos_next.sync.tests.test_outbox", + "pos_next.sync.tests.test_watermark", + "pos_next.sync.tests.test_payload", + "pos_next.sync.tests.test_base_adapter", + "pos_next.sync.tests.test_registry", + "pos_next.sync.tests.test_conflict", + "pos_next.sync.tests.test_auth", + "pos_next.sync.tests.test_custom_fields", + "pos_next.sync.tests.test_backfill", + "pos_next.sync.tests.test_seeds", +] + + +def run(): + passed = 0 + failed = 0 + for mod_name in TEST_MODULES: + print(f"\n=== {mod_name} ===") + try: + mod = __import__(mod_name, fromlist=["run_all"]) + mod.run_all() + passed += 1 + except Exception: + failed += 1 + print(f"FAILED: {mod_name}") + traceback.print_exc() + print(f"\n\n=== SUMMARY: {passed} passed, {failed} failed ===") + if failed: + raise SystemExit(1) diff --git a/pos_next/sync/tests/run_plan2_tests.py b/pos_next/sync/tests/run_plan2_tests.py new file mode 100644 index 00000000..df0b7970 --- /dev/null +++ b/pos_next/sync/tests/run_plan2_tests.py @@ -0,0 +1,34 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Run every Plan 2 test module and report PASS/FAIL counts.""" + +import traceback + + +TEST_MODULES = [ + "pos_next.sync.tests.test_changes_api", + "pos_next.sync.tests.test_generic_adapter", + "pos_next.sync.tests.test_item_adapter", + "pos_next.sync.tests.test_item_price_adapter", + "pos_next.sync.tests.test_customer_adapter", + "pos_next.sync.tests.test_masters_puller", +] + + +def run(): + passed = 0 + failed = 0 + for mod_name in TEST_MODULES: + print(f"\n=== {mod_name} ===") + try: + mod = __import__(mod_name, fromlist=["run_all"]) + mod.run_all() + passed += 1 + except Exception: + failed += 1 + print(f"FAILED: {mod_name}") + traceback.print_exc() + print(f"\n\n=== PLAN 2 SUMMARY: {passed} passed, {failed} failed ===") + if failed: + raise SystemExit(1) diff --git a/pos_next/sync/tests/run_plan3_tests.py b/pos_next/sync/tests/run_plan3_tests.py new file mode 100644 index 00000000..d74d591c --- /dev/null +++ b/pos_next/sync/tests/run_plan3_tests.py @@ -0,0 +1,32 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""Run every Plan 3 test module and report PASS/FAIL counts.""" + +import traceback + + +TEST_MODULES = [ + "pos_next.sync.tests.test_submittable_adapter", + "pos_next.sync.tests.test_hooks_outbox", + "pos_next.sync.tests.test_ingest_api", + "pos_next.sync.tests.test_outbox_drainer", +] + + +def run(): + passed = 0 + failed = 0 + for mod_name in TEST_MODULES: + print(f"\n=== {mod_name} ===") + try: + mod = __import__(mod_name, fromlist=["run_all"]) + mod.run_all() + passed += 1 + except Exception: + failed += 1 + print(f"FAILED: {mod_name}") + traceback.print_exc() + print(f"\n\n=== PLAN 3 SUMMARY: {passed} passed, {failed} failed ===") + if failed: + raise SystemExit(1) diff --git a/pos_next/sync/tests/test_auth.py b/pos_next/sync/tests/test_auth.py new file mode 100644 index 00000000..ede24336 --- /dev/null +++ b/pos_next/sync/tests/test_auth.py @@ -0,0 +1,101 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from unittest.mock import patch, MagicMock + + +def test_session_login_caches_sid(): + """After login, the session cookie (sid) is held in memory.""" + from pos_next.sync.auth import SyncSession + + fake_response = MagicMock() + fake_response.status_code = 200 + fake_response.cookies = {"sid": "test-sid-xyz"} + fake_response.raise_for_status = MagicMock() + + with patch("pos_next.sync.auth.requests.post", return_value=fake_response) as mock_post: + session = SyncSession( + central_url="https://central.test", + username="sync@test.com", + password="pw", + ) + session.login() + assert session._sid == "test-sid-xyz" + # Second call does NOT re-login + session.login() + assert mock_post.call_count == 1 + print("PASS: test_session_login_caches_sid") + + +def test_session_login_failure_raises(): + """Failed login raises SyncAuthError.""" + from pos_next.sync.auth import SyncSession + from pos_next.sync.exceptions import SyncAuthError + import requests + + fake_response = MagicMock() + fake_response.status_code = 401 + fake_response.raise_for_status = MagicMock( + side_effect=requests.HTTPError("401 Unauthorized") + ) + + with patch("pos_next.sync.auth.requests.post", return_value=fake_response): + session = SyncSession( + central_url="https://central.test", + username="sync@test.com", + password="bad", + ) + raised = False + try: + session.login() + except SyncAuthError: + raised = True + assert raised + print("PASS: test_session_login_failure_raises") + + +def test_session_auto_relogin_on_401(): + """A 401 response from an authenticated request triggers one re-login + retry.""" + from pos_next.sync.auth import SyncSession + + # First login succeeds + login_resp = MagicMock() + login_resp.status_code = 200 + login_resp.cookies = {"sid": "sid-1"} + login_resp.raise_for_status = MagicMock() + + # First authenticated call returns 401 + call_resp_401 = MagicMock() + call_resp_401.status_code = 401 + + # Re-login produces new sid + login_resp_2 = MagicMock() + login_resp_2.status_code = 200 + login_resp_2.cookies = {"sid": "sid-2"} + login_resp_2.raise_for_status = MagicMock() + + # Retry succeeds + call_resp_ok = MagicMock() + call_resp_ok.status_code = 200 + call_resp_ok.json = MagicMock(return_value={"message": "ok"}) + call_resp_ok.raise_for_status = MagicMock() + + with patch("pos_next.sync.auth.requests.post") as mock_post: + mock_post.side_effect = [login_resp, call_resp_401, login_resp_2, call_resp_ok] + session = SyncSession( + central_url="https://central.test", + username="sync@test.com", + password="pw", + ) + session.login() + result = session.post("/api/method/something", data={"x": 1}) + assert result.status_code == 200 + assert session._sid == "sid-2" + print("PASS: test_session_auto_relogin_on_401") + + +def run_all(): + test_session_login_caches_sid() + test_session_login_failure_raises() + test_session_auto_relogin_on_401() + print("\nAll Auth tests PASSED") diff --git a/pos_next/sync/tests/test_backfill.py b/pos_next/sync/tests/test_backfill.py new file mode 100644 index 00000000..d0b0142c --- /dev/null +++ b/pos_next/sync/tests/test_backfill.py @@ -0,0 +1,58 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +TARGET_DOCTYPES = [ + "Sales Invoice", + "Payment Entry", + "Stock Ledger Entry", + "POS Opening Shift", + "POS Closing Shift", + "Customer", +] + + +def test_no_null_sync_uuids_after_backfill(): + """After the backfill runs, no rows in target DocTypes have NULL sync_uuid.""" + from pos_next.patches.v2_0_0.backfill_sync_uuid import execute + + execute() # idempotent + + for dt in TARGET_DOCTYPES: + total = frappe.db.count(dt) + if total == 0: + continue + null_count = frappe.db.sql( + f"SELECT COUNT(*) FROM `tab{dt}` WHERE sync_uuid IS NULL OR sync_uuid = ''" + )[0][0] + assert null_count == 0, f"{dt}: {null_count} rows have NULL sync_uuid" + print("PASS: test_no_null_sync_uuids_after_backfill") + + +def test_backfill_is_idempotent(): + """Running the backfill twice does not change existing UUIDs.""" + from pos_next.patches.v2_0_0.backfill_sync_uuid import execute + + execute() + rows_before = frappe.db.sql( + "SELECT name, sync_uuid FROM `tabCustomer` WHERE sync_uuid IS NOT NULL LIMIT 5", + as_dict=True, + ) + execute() + rows_after = frappe.db.sql( + "SELECT name, sync_uuid FROM `tabCustomer` WHERE sync_uuid IS NOT NULL LIMIT 5", + as_dict=True, + ) + before = {r.name: r.sync_uuid for r in rows_before} + after = {r.name: r.sync_uuid for r in rows_after} + for name, uuid_val in before.items(): + assert after.get(name) == uuid_val, f"Customer {name}: uuid changed" + print("PASS: test_backfill_is_idempotent") + + +def run_all(): + test_no_null_sync_uuids_after_backfill() + test_backfill_is_idempotent() + print("\nAll Backfill tests PASSED") diff --git a/pos_next/sync/tests/test_base_adapter.py b/pos_next/sync/tests/test_base_adapter.py new file mode 100644 index 00000000..40528358 --- /dev/null +++ b/pos_next/sync/tests/test_base_adapter.py @@ -0,0 +1,57 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + + +def test_base_adapter_interface(): + """BaseSyncAdapter has the expected methods.""" + from pos_next.sync.adapters.base import BaseSyncAdapter + required = {"serialize", "apply_incoming", "conflict_key", "validate_incoming", "pre_apply_transform"} + for method in required: + assert hasattr(BaseSyncAdapter, method), f"Missing: {method}" + print("PASS: test_base_adapter_interface") + + +def test_base_adapter_default_conflict_key(): + """Default conflict_key returns ('name',).""" + from pos_next.sync.adapters.base import BaseSyncAdapter + + class DummyAdapter(BaseSyncAdapter): + doctype = "Item" + + adapter = DummyAdapter() + assert adapter.conflict_key({"name": "ITEM-001"}) == ("name",) + print("PASS: test_base_adapter_default_conflict_key") + + +def test_base_adapter_default_validate_passes(): + """Default validate_incoming does nothing (no raise).""" + from pos_next.sync.adapters.base import BaseSyncAdapter + + class DummyAdapter(BaseSyncAdapter): + doctype = "Item" + + adapter = DummyAdapter() + adapter.validate_incoming({"name": "ITEM-001"}) # should not raise + print("PASS: test_base_adapter_default_validate_passes") + + +def test_base_adapter_default_pre_apply_transform_identity(): + """Default pre_apply_transform returns payload unchanged.""" + from pos_next.sync.adapters.base import BaseSyncAdapter + + class DummyAdapter(BaseSyncAdapter): + doctype = "Item" + + adapter = DummyAdapter() + p = {"name": "ITEM-001", "price": 100} + result = adapter.pre_apply_transform(p) + assert result == p + print("PASS: test_base_adapter_default_pre_apply_transform_identity") + + +def run_all(): + test_base_adapter_interface() + test_base_adapter_default_conflict_key() + test_base_adapter_default_validate_passes() + test_base_adapter_default_pre_apply_transform_identity() + print("\nAll BaseSyncAdapter tests PASSED") diff --git a/pos_next/sync/tests/test_changes_api.py b/pos_next/sync/tests/test_changes_api.py new file mode 100644 index 00000000..ca0ec072 --- /dev/null +++ b/pos_next/sync/tests/test_changes_api.py @@ -0,0 +1,81 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +import json + + +def _cleanup(): + frappe.db.delete("Sync Tombstone") + frappe.db.commit() + + +def test_changes_since_returns_upserts(): + """changes_since returns records modified after the given watermark.""" + from pos_next.sync.api.changes import changes_since + + # Use a DocType that definitely has rows — DocType itself + result = changes_since(doctype="DocType", since="2000-01-01 00:00:00", limit=5) + assert "upserts" in result + assert "tombstones" in result + assert "next_since" in result + assert "has_more" in result + assert len(result["upserts"]) <= 5 + assert isinstance(result["upserts"], list) + if result["upserts"]: + assert "name" in result["upserts"][0] + assert "modified" in result["upserts"][0] + print("PASS: test_changes_since_returns_upserts") + + +def test_changes_since_pagination(): + """has_more=True when more records exist beyond the limit.""" + from pos_next.sync.api.changes import changes_since + + result = changes_since(doctype="DocType", since="2000-01-01 00:00:00", limit=2) + # There are certainly more than 2 DocTypes + assert result["has_more"] is True + assert len(result["upserts"]) == 2 + assert result["next_since"] is not None + print("PASS: test_changes_since_pagination") + + +def test_changes_since_includes_tombstones(): + """Tombstones for the given doctype are included.""" + _cleanup() + try: + from pos_next.sync.api.changes import changes_since + from pos_next.pos_next.doctype.sync_tombstone.sync_tombstone import SyncTombstone + + SyncTombstone.record("Item", "FAKE-ITEM-001") + SyncTombstone.record("Item", "FAKE-ITEM-002") + SyncTombstone.record("Customer", "FAKE-CUST-001") # different doctype + + result = changes_since(doctype="Item", since="2000-01-01 00:00:00", limit=100) + item_tombstones = [t for t in result["tombstones"] if t["reference_name"].startswith("FAKE-ITEM")] + assert len(item_tombstones) == 2, f"Expected 2 Item tombstones, got {len(item_tombstones)}" + + # Customer tombstone should NOT appear in Item query + cust_tombstones = [t for t in result["tombstones"] if t["reference_name"].startswith("FAKE-CUST")] + assert len(cust_tombstones) == 0 + print("PASS: test_changes_since_includes_tombstones") + finally: + _cleanup() + + +def test_changes_since_empty_result(): + """Future watermark returns empty result.""" + from pos_next.sync.api.changes import changes_since + + result = changes_since(doctype="DocType", since="2099-01-01 00:00:00", limit=100) + assert len(result["upserts"]) == 0 + assert result["has_more"] is False + print("PASS: test_changes_since_empty_result") + + +def run_all(): + test_changes_since_returns_upserts() + test_changes_since_pagination() + test_changes_since_includes_tombstones() + test_changes_since_empty_result() + print("\nAll changes_since API tests PASSED") diff --git a/pos_next/sync/tests/test_conflict.py b/pos_next/sync/tests/test_conflict.py new file mode 100644 index 00000000..42895d46 --- /dev/null +++ b/pos_next/sync/tests/test_conflict.py @@ -0,0 +1,112 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +from datetime import datetime + + +def test_last_write_wins_incoming_newer(): + from pos_next.sync.conflict import resolve + local = {"name": "X", "v": 1, "modified": "2026-04-05 10:00:00"} + incoming = {"name": "X", "v": 2, "modified": "2026-04-05 11:00:00"} + winner, verdict = resolve(local, incoming, "Last-Write-Wins") + assert winner is incoming + assert verdict == "incoming" + print("PASS: test_last_write_wins_incoming_newer") + + +def test_last_write_wins_local_newer(): + from pos_next.sync.conflict import resolve + local = {"name": "X", "v": 1, "modified": "2026-04-05 12:00:00"} + incoming = {"name": "X", "v": 2, "modified": "2026-04-05 11:00:00"} + winner, verdict = resolve(local, incoming, "Last-Write-Wins") + assert winner is local + assert verdict == "local" + print("PASS: test_last_write_wins_local_newer") + + +def test_last_write_wins_tie_goes_to_incoming(): + from pos_next.sync.conflict import resolve + ts = "2026-04-05 10:00:00" + local = {"name": "X", "v": 1, "modified": ts} + incoming = {"name": "X", "v": 2, "modified": ts} + winner, verdict = resolve(local, incoming, "Last-Write-Wins") + assert winner is incoming + print("PASS: test_last_write_wins_tie_goes_to_incoming") + + +def test_central_wins(): + from pos_next.sync.conflict import resolve + local = {"name": "X", "v": 1} + incoming = {"name": "X", "v": 2} + winner, verdict = resolve(local, incoming, "Central-Wins") + assert winner is incoming + assert verdict == "incoming" + print("PASS: test_central_wins") + + +def test_branch_wins(): + from pos_next.sync.conflict import resolve + local = {"name": "X", "v": 1} + incoming = {"name": "X", "v": 2} + winner, verdict = resolve(local, incoming, "Branch-Wins") + assert winner is incoming + assert verdict == "incoming" + print("PASS: test_branch_wins") + + +def test_manual_rule_raises(): + from pos_next.sync.conflict import resolve + from pos_next.sync.exceptions import SyncConflictError + local = {"name": "X", "v": 1} + incoming = {"name": "X", "v": 2} + raised = False + try: + resolve(local, incoming, "Manual") + except SyncConflictError: + raised = True + assert raised, "Manual rule should raise SyncConflictError" + print("PASS: test_manual_rule_raises") + + +def test_field_level_lww_merges_per_field(): + from pos_next.sync.conflict import resolve + local = { + "name": "X", + "field_a": "local-a", + "field_b": "local-b", + "__field_ts": {"field_a": "2026-04-05 10:00:00", "field_b": "2026-04-05 12:00:00"}, + } + incoming = { + "name": "X", + "field_a": "incoming-a", + "field_b": "incoming-b", + "__field_ts": {"field_a": "2026-04-05 11:00:00", "field_b": "2026-04-05 11:00:00"}, + } + winner, verdict = resolve(local, incoming, "Field-Level-LWW") + assert verdict == "merged" + assert winner["field_a"] == "incoming-a" # incoming had newer ts + assert winner["field_b"] == "local-b" # local had newer ts + print("PASS: test_field_level_lww_merges_per_field") + + +def test_unknown_rule_raises(): + from pos_next.sync.conflict import resolve + raised = False + try: + resolve({}, {}, "NotARealRule") + except ValueError: + raised = True + assert raised + print("PASS: test_unknown_rule_raises") + + +def run_all(): + test_last_write_wins_incoming_newer() + test_last_write_wins_local_newer() + test_last_write_wins_tie_goes_to_incoming() + test_central_wins() + test_branch_wins() + test_manual_rule_raises() + test_field_level_lww_merges_per_field() + test_unknown_rule_raises() + print("\nAll Conflict tests PASSED") diff --git a/pos_next/sync/tests/test_custom_fields.py b/pos_next/sync/tests/test_custom_fields.py new file mode 100644 index 00000000..5fa20990 --- /dev/null +++ b/pos_next/sync/tests/test_custom_fields.py @@ -0,0 +1,48 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +TARGET_DOCTYPES = [ + "Sales Invoice", + "Payment Entry", + "Stock Ledger Entry", + "POS Opening Shift", + "POS Closing Shift", + "Customer", +] + +EXPECTED_FIELDS = {"sync_uuid", "origin_branch", "synced_from_failover"} + + +def test_custom_fields_installed(): + """All three sync custom fields are installed on every target DocType.""" + for dt in TARGET_DOCTYPES: + for fieldname in EXPECTED_FIELDS: + exists = frappe.db.exists( + "Custom Field", {"dt": dt, "fieldname": fieldname} + ) + assert exists, f"Missing custom field {fieldname} on {dt}" + print("PASS: test_custom_fields_installed") + + +def test_sync_uuid_is_unique(): + """sync_uuid has unique=1 on target DocTypes.""" + for dt in TARGET_DOCTYPES: + cf = frappe.db.get_value( + "Custom Field", + {"dt": dt, "fieldname": "sync_uuid"}, + ["fieldtype", "unique"], + as_dict=True, + ) + assert cf is not None, f"sync_uuid missing on {dt}" + assert cf.fieldtype == "Data", f"sync_uuid should be Data on {dt}" + assert cf.unique == 1, f"sync_uuid should be unique on {dt}" + print("PASS: test_sync_uuid_is_unique") + + +def run_all(): + test_custom_fields_installed() + test_sync_uuid_is_unique() + print("\nAll Custom Fields tests PASSED") diff --git a/pos_next/sync/tests/test_customer_adapter.py b/pos_next/sync/tests/test_customer_adapter.py new file mode 100644 index 00000000..ffe99880 --- /dev/null +++ b/pos_next/sync/tests/test_customer_adapter.py @@ -0,0 +1,103 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +def _cleanup(): + for name in frappe.get_all("Customer", filters={"name": ("like", "SYNCTEST-%")}, pluck="name"): + frappe.delete_doc("Customer", name, force=True, ignore_permissions=True) + frappe.db.commit() + + +def _get_customer_defaults(): + """Get customer_group and territory for test fixtures.""" + cg = frappe.db.get_single_value("Selling Settings", "customer_group") or frappe.db.get_value("Customer Group", {}, "name") or "All Customer Groups" + territory = frappe.db.get_single_value("Selling Settings", "territory") or frappe.db.get_value("Territory", {}, "name") or "All Territories" + return cg, territory + + +def test_customer_adapter_registered(): + """CustomerAdapter is registered for 'Customer'.""" + from pos_next.sync.adapters import customer # triggers registration + from pos_next.sync import registry + adapter = registry.get_adapter("Customer") + assert adapter is not None + assert adapter.doctype == "Customer" + print("PASS: test_customer_adapter_registered") + + +def test_customer_adapter_conflict_key(): + """Conflict key is mobile_no for dedup.""" + from pos_next.sync.adapters.customer import CustomerAdapter + adapter = CustomerAdapter() + assert adapter.conflict_key({"mobile_no": "01234567890"}) == ("mobile_no",) + print("PASS: test_customer_adapter_conflict_key") + + +def test_customer_adapter_dedup_by_mobile(): + """If a customer with same mobile_no exists under a different name, return existing.""" + _cleanup() + try: + from pos_next.sync.adapters.customer import CustomerAdapter + adapter = CustomerAdapter() + cg, territory = _get_customer_defaults() + + local = frappe.get_doc({ + "doctype": "Customer", + "customer_name": "SYNCTEST-Local Guy", + "customer_type": "Individual", + "customer_group": cg, + "territory": territory, + "mobile_no": "01099999999", + }) + local.insert(ignore_permissions=True) + frappe.db.commit() + + payload = { + "name": "SYNCTEST-Central Guy", + "customer_name": "Central Guy", + "customer_type": "Individual", + "customer_group": cg, + "territory": territory, + "mobile_no": "01099999999", + } + result = adapter.apply_incoming(payload, "update") + assert result == local.name, f"Expected {local.name}, got {result}" + + count = frappe.db.count("Customer", {"mobile_no": "01099999999"}) + assert count == 1, f"Expected 1 customer with this mobile, got {count}" + print("PASS: test_customer_adapter_dedup_by_mobile") + finally: + _cleanup() + + +def test_customer_adapter_creates_new(): + """If no mobile_no match, create normally.""" + _cleanup() + try: + from pos_next.sync.adapters.customer import CustomerAdapter + adapter = CustomerAdapter() + cg, territory = _get_customer_defaults() + + payload = { + "name": "SYNCTEST-NewCust", + "customer_name": "SYNCTEST-NewCust", + "customer_type": "Individual", + "customer_group": cg, + "territory": territory, + "mobile_no": "01055555555", + } + result = adapter.apply_incoming(payload, "update") + assert frappe.db.exists("Customer", result) + print("PASS: test_customer_adapter_creates_new") + finally: + _cleanup() + + +def run_all(): + test_customer_adapter_registered() + test_customer_adapter_conflict_key() + test_customer_adapter_dedup_by_mobile() + test_customer_adapter_creates_new() + print("\nAll CustomerAdapter tests PASSED") diff --git a/pos_next/sync/tests/test_generic_adapter.py b/pos_next/sync/tests/test_generic_adapter.py new file mode 100644 index 00000000..29e4717b --- /dev/null +++ b/pos_next/sync/tests/test_generic_adapter.py @@ -0,0 +1,38 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + + +def test_generic_adapter_registered_for_all_masters(): + """GenericMasterAdapter registers for all simple master DocTypes.""" + from pos_next.sync.adapters import generic_master # triggers registration + from pos_next.sync import registry + + expected = [ + "POS Profile", "Warehouse", "Mode of Payment", "Item Group", + "UOM", "Price List", "Company", "Currency", "Branch", + "Customer Group", "Sales Person", "Employee", "User", + "Role Profile", "Sales Taxes and Charges Template", + "Item Tax Template", "POS Settings", "Loyalty Program", + "Item Barcode", + ] + registered = registry.list_registered() + for dt in expected: + assert dt in registered, f"{dt} not registered by GenericMasterAdapter" + print("PASS: test_generic_adapter_registered_for_all_masters") + + +def test_generic_adapter_uses_default_behavior(): + """GenericMasterAdapter has default conflict_key and validate_incoming.""" + from pos_next.sync.adapters.generic_master import GenericMasterAdapter + + adapter = GenericMasterAdapter() + adapter.doctype = "Warehouse" + assert adapter.conflict_key({"name": "WH-001"}) == ("name",) + adapter.validate_incoming({"name": "WH-001"}) # should not raise + print("PASS: test_generic_adapter_uses_default_behavior") + + +def run_all(): + test_generic_adapter_registered_for_all_masters() + test_generic_adapter_uses_default_behavior() + print("\nAll GenericMasterAdapter tests PASSED") diff --git a/pos_next/sync/tests/test_hooks_outbox.py b/pos_next/sync/tests/test_hooks_outbox.py new file mode 100644 index 00000000..47eb7b38 --- /dev/null +++ b/pos_next/sync/tests/test_hooks_outbox.py @@ -0,0 +1,71 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +def _cleanup(): + frappe.db.delete("Sync Outbox") + frappe.db.commit() + + +def test_method_to_operation(): + """Maps Frappe doc_event method names to outbox operations.""" + from pos_next.sync.hooks_outbox import _method_to_operation + assert _method_to_operation("on_submit") == "submit" + assert _method_to_operation("on_cancel") == "cancel" + assert _method_to_operation("on_update") == "update" + assert _method_to_operation("on_update_after_submit") == "update" + assert _method_to_operation("after_insert") == "insert" + assert _method_to_operation("on_trash") == "delete" + print("PASS: test_method_to_operation") + + +def test_enqueue_guard(): + """_is_branch_site returns a bool.""" + from pos_next.sync.hooks_outbox import _is_branch_site + result = _is_branch_site() + assert isinstance(result, bool) + print("PASS: test_enqueue_guard") + + +def test_enqueue_creates_outbox_row(): + """enqueue_to_outbox creates a Sync Outbox row when on a Branch site.""" + _cleanup() + try: + from pos_next.sync.hooks_outbox import _is_branch_site + + if not _is_branch_site(): + print("SKIP: test_enqueue_creates_outbox_row (not a Branch site)") + return + + from pos_next.sync.hooks_outbox import enqueue_to_outbox + from unittest.mock import MagicMock + + doc = MagicMock() + doc.doctype = "Sales Invoice" + doc.name = "TEST-SINV-001" + doc.as_dict.return_value = {"name": "TEST-SINV-001", "total": 100} + + enqueue_to_outbox(doc, method="on_submit") + + count = frappe.db.count("Sync Outbox", {"reference_doctype": "Sales Invoice", "reference_name": "TEST-SINV-001"}) + assert count == 1, f"Expected 1 outbox row, got {count}" + + row = frappe.get_all( + "Sync Outbox", + filters={"reference_name": "TEST-SINV-001"}, + fields=["operation", "sync_status"], + )[0] + assert row.operation == "submit" + assert row.sync_status == "pending" + print("PASS: test_enqueue_creates_outbox_row") + finally: + _cleanup() + + +def run_all(): + test_method_to_operation() + test_enqueue_guard() + test_enqueue_creates_outbox_row() + print("\nAll Outbox Hooks tests PASSED") diff --git a/pos_next/sync/tests/test_ingest_api.py b/pos_next/sync/tests/test_ingest_api.py new file mode 100644 index 00000000..7b04bf1b --- /dev/null +++ b/pos_next/sync/tests/test_ingest_api.py @@ -0,0 +1,42 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +import json + + +def _cleanup(): + frappe.db.delete("Sync Record State") + frappe.db.commit() + + +def test_ingest_returns_results(): + """Ingest endpoint returns per-record results.""" + from pos_next.sync.api.ingest import ingest + + result = ingest( + doctype="Warehouse", + branch_code="CAI", + records=json.dumps([ + {"operation": "update", "payload": {"name": "FAKE-WH-INGEST", "warehouse_name": "Test"}}, + ]), + ) + assert "results" in result + assert len(result["results"]) == 1 + assert "name" in result["results"][0] + assert "status" in result["results"][0] + print("PASS: test_ingest_returns_results") + + +def test_ingest_empty_records(): + """Empty records list returns empty results.""" + from pos_next.sync.api.ingest import ingest + result = ingest(doctype="Warehouse", branch_code="CAI", records=json.dumps([])) + assert result["results"] == [] + print("PASS: test_ingest_empty_records") + + +def run_all(): + test_ingest_returns_results() + test_ingest_empty_records() + print("\nAll Ingest API tests PASSED") diff --git a/pos_next/sync/tests/test_item_adapter.py b/pos_next/sync/tests/test_item_adapter.py new file mode 100644 index 00000000..d53cb612 --- /dev/null +++ b/pos_next/sync/tests/test_item_adapter.py @@ -0,0 +1,128 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +def _get_item_group(): + """Get the first available Item Group, or create one.""" + name = frappe.db.get_value("Item Group", {}, "name") + if name: + return name + doc = frappe.get_doc({"doctype": "Item Group", "item_group_name": "SYNCTEST Group", "parent_item_group": ""}) + doc.insert(ignore_permissions=True) + return doc.name + + +def _get_uom(): + """Get the first available UOM, or create one.""" + name = frappe.db.get_value("UOM", {}, "name") + if name: + return name + doc = frappe.get_doc({"doctype": "UOM", "uom_name": "SYNCTEST Unit"}) + doc.insert(ignore_permissions=True) + return doc.name + + +def _cleanup(): + for name in frappe.get_all("Item", filters={"name": ("like", "SYNCTEST-%")}, pluck="name"): + frappe.delete_doc("Item", name, force=True, ignore_permissions=True) + frappe.db.commit() + + +def test_item_adapter_registered(): + """ItemAdapter is registered for 'Item'.""" + from pos_next.sync.adapters import item # triggers registration + from pos_next.sync import registry + adapter = registry.get_adapter("Item") + assert adapter is not None, "Item adapter not registered" + assert adapter.doctype == "Item" + print("PASS: test_item_adapter_registered") + + +def test_item_adapter_apply_creates_item(): + """apply_incoming creates an Item from payload.""" + _cleanup() + try: + from pos_next.sync.adapters.item import ItemAdapter + adapter = ItemAdapter() + item_group = _get_item_group() + uom = _get_uom() + + payload = { + "name": "SYNCTEST-APPLE", + "item_code": "SYNCTEST-APPLE", + "item_name": "Apple", + "item_group": item_group, + "stock_uom": uom, + "is_stock_item": 1, + } + result = adapter.apply_incoming(payload, "update") + assert result == "SYNCTEST-APPLE" + assert frappe.db.exists("Item", "SYNCTEST-APPLE") + print("PASS: test_item_adapter_apply_creates_item") + finally: + _cleanup() + + +def test_item_adapter_apply_updates_item(): + """apply_incoming updates an existing Item.""" + _cleanup() + try: + from pos_next.sync.adapters.item import ItemAdapter + adapter = ItemAdapter() + item_group = _get_item_group() + uom = _get_uom() + + payload = { + "name": "SYNCTEST-BANANA", + "item_code": "SYNCTEST-BANANA", + "item_name": "Banana", + "item_group": item_group, + "stock_uom": uom, + } + adapter.apply_incoming(payload, "update") + + payload["item_name"] = "Banana (Updated)" + adapter.apply_incoming(payload, "update") + + doc = frappe.get_doc("Item", "SYNCTEST-BANANA") + assert doc.item_name == "Banana (Updated)" + print("PASS: test_item_adapter_apply_updates_item") + finally: + _cleanup() + + +def test_item_adapter_serialize(): + """serialize returns a dict payload.""" + _cleanup() + try: + from pos_next.sync.adapters.item import ItemAdapter + adapter = ItemAdapter() + item_group = _get_item_group() + uom = _get_uom() + + doc = frappe.get_doc({ + "doctype": "Item", + "item_code": "SYNCTEST-SERIALIZE", + "item_name": "Serialize Test", + "item_group": item_group, + "stock_uom": uom, + }) + doc.insert(ignore_permissions=True) + doc.reload() + + payload = adapter.serialize(doc) + assert "name" in payload + assert isinstance(payload, dict) + print("PASS: test_item_adapter_serialize") + finally: + _cleanup() + + +def run_all(): + test_item_adapter_registered() + test_item_adapter_apply_creates_item() + test_item_adapter_apply_updates_item() + test_item_adapter_serialize() + print("\nAll ItemAdapter tests PASSED") diff --git a/pos_next/sync/tests/test_item_price_adapter.py b/pos_next/sync/tests/test_item_price_adapter.py new file mode 100644 index 00000000..1910e83f --- /dev/null +++ b/pos_next/sync/tests/test_item_price_adapter.py @@ -0,0 +1,86 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +def _cleanup(): + for name in frappe.get_all("Item Price", filters={"item_code": ("like", "SYNCTEST-%")}, pluck="name"): + frappe.delete_doc("Item Price", name, force=True, ignore_permissions=True) + for name in frappe.get_all("Item", filters={"name": ("like", "SYNCTEST-%")}, pluck="name"): + frappe.delete_doc("Item", name, force=True, ignore_permissions=True) + frappe.db.commit() + + +def _ensure_test_item(): + """Create a test item if not exists.""" + if not frappe.db.exists("Item", "SYNCTEST-IP-ITEM"): + item_group = frappe.db.get_value("Item Group", {}, "name") + uom = frappe.db.get_value("UOM", {}, "name") + frappe.get_doc({ + "doctype": "Item", + "item_code": "SYNCTEST-IP-ITEM", + "item_name": "IP Test Item", + "item_group": item_group, + "stock_uom": uom, + }).insert(ignore_permissions=True) + + +def test_item_price_adapter_registered(): + """ItemPriceAdapter is registered for 'Item Price'.""" + from pos_next.sync.adapters import item_price # triggers registration + from pos_next.sync import registry + adapter = registry.get_adapter("Item Price") + assert adapter is not None, "Item Price adapter not registered" + print("PASS: test_item_price_adapter_registered") + + +def test_item_price_adapter_conflict_key(): + """Conflict key is composite: (item_code, price_list, uom).""" + from pos_next.sync.adapters.item_price import ItemPriceAdapter + adapter = ItemPriceAdapter() + payload = {"item_code": "ITEM-001", "price_list": "Standard Selling", "uom": "Nos"} + assert adapter.conflict_key(payload) == ("item_code", "price_list", "uom") + print("PASS: test_item_price_adapter_conflict_key") + + +def test_item_price_adapter_apply_by_composite_key(): + """apply_incoming looks up by composite key, not by name.""" + _cleanup() + try: + _ensure_test_item() + from pos_next.sync.adapters.item_price import ItemPriceAdapter + adapter = ItemPriceAdapter() + + uom = frappe.db.get_value("UOM", {}, "name") + currency = frappe.defaults.get_global_default("currency") or "USD" + + payload = { + "name": "CENTRAL-IP-001", + "item_code": "SYNCTEST-IP-ITEM", + "price_list": "Standard Selling", + "price_list_rate": 100, + "uom": uom, + "currency": currency, + } + adapter.apply_incoming(payload, "update") + assert frappe.db.exists("Item Price", {"item_code": "SYNCTEST-IP-ITEM", "price_list": "Standard Selling"}) + + # Second apply with updated price — should update, not create duplicate + payload["price_list_rate"] = 150 + adapter.apply_incoming(payload, "update") + count = frappe.db.count("Item Price", {"item_code": "SYNCTEST-IP-ITEM", "price_list": "Standard Selling"}) + assert count == 1, f"Expected 1 Item Price, got {count}" + + rate = frappe.db.get_value("Item Price", {"item_code": "SYNCTEST-IP-ITEM", "price_list": "Standard Selling"}, "price_list_rate") + assert float(rate) == 150.0, f"Expected 150, got {rate}" + print("PASS: test_item_price_adapter_apply_by_composite_key") + finally: + _cleanup() + + +def run_all(): + test_item_price_adapter_registered() + test_item_price_adapter_conflict_key() + test_item_price_adapter_apply_by_composite_key() + print("\nAll ItemPriceAdapter tests PASSED") diff --git a/pos_next/sync/tests/test_masters_puller.py b/pos_next/sync/tests/test_masters_puller.py new file mode 100644 index 00000000..7076f45b --- /dev/null +++ b/pos_next/sync/tests/test_masters_puller.py @@ -0,0 +1,94 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from unittest.mock import patch, MagicMock + + +def test_pull_if_due_noop_on_central(): + """pull_if_due does nothing when no Branch config exists.""" + from pos_next.sync.masters_puller import pull_if_due + # Should not crash — just returns silently + pull_if_due() + print("PASS: test_pull_if_due_noop_on_central") + + +def test_masters_puller_processes_upserts(): + """MastersPuller applies upserts from changes_since response.""" + from pos_next.sync.masters_puller import MastersPuller + + fake_session = MagicMock() + fake_response = MagicMock() + fake_response.status_code = 200 + fake_response.json.return_value = { + "message": { + "upserts": [ + {"name": "TEST-PULLER-WH", "warehouse_name": "Test Puller WH", "company": "", "modified": "2026-04-06 10:00:00"}, + ], + "tombstones": [], + "next_since": "2026-04-06 10:00:00", + "has_more": False, + } + } + fake_session.get.return_value = fake_response + + puller = MastersPuller(fake_session) + upserted, deleted, errors = puller._pull_one_doctype("Warehouse", "2000-01-01 00:00:00", 100) + assert upserted >= 0 + assert errors >= 0 + print("PASS: test_masters_puller_processes_upserts") + + +def test_masters_puller_advances_watermark(): + """After a successful pull, the watermark is advanced.""" + from pos_next.sync.masters_puller import MastersPuller + from pos_next.pos_next.doctype.sync_watermark.sync_watermark import SyncWatermark + + frappe.db.delete("Sync Watermark", {"doctype_name": "ToDo"}) + frappe.db.commit() + + fake_session = MagicMock() + fake_response = MagicMock() + fake_response.status_code = 200 + fake_response.json.return_value = { + "message": { + "upserts": [], + "tombstones": [], + "next_since": "2026-04-06 12:00:00", + "has_more": False, + } + } + fake_session.get.return_value = fake_response + + puller = MastersPuller(fake_session) + puller._pull_one_doctype("ToDo", "2000-01-01 00:00:00", 100) + + wm = SyncWatermark.get_for("ToDo") + assert wm is not None, "Watermark should have been created" + assert str(wm.last_modified) == "2026-04-06 12:00:00" + print("PASS: test_masters_puller_advances_watermark") + + frappe.db.delete("Sync Watermark", {"doctype_name": "ToDo"}) + frappe.db.commit() + + +def test_masters_puller_handles_http_error(): + """HTTP errors are caught and don't crash the puller.""" + from pos_next.sync.masters_puller import MastersPuller + import requests + + fake_session = MagicMock() + fake_session.get.side_effect = requests.ConnectionError("test error") + + puller = MastersPuller(fake_session) + upserted, deleted, errors = puller._pull_one_doctype("Warehouse", "2000-01-01 00:00:00", 100) + assert errors > 0 + print("PASS: test_masters_puller_handles_http_error") + + +def run_all(): + test_pull_if_due_noop_on_central() + test_masters_puller_processes_upserts() + test_masters_puller_advances_watermark() + test_masters_puller_handles_http_error() + print("\nAll MastersPuller tests PASSED") diff --git a/pos_next/sync/tests/test_outbox.py b/pos_next/sync/tests/test_outbox.py new file mode 100644 index 00000000..0ab64823 --- /dev/null +++ b/pos_next/sync/tests/test_outbox.py @@ -0,0 +1,139 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +def _cleanup(): + frappe.db.delete("Sync Outbox") + frappe.db.commit() + + +def test_insert_creates_row(): + """Creating an outbox row is straightforward.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + row = SyncOutbox.enqueue( + reference_doctype="Sales Invoice", + reference_name="SINV-CAI-2026-00001", + operation="insert", + payload='{"name":"SINV-CAI-2026-00001","total":100}', + priority=50, + ) + assert row.sync_status == "pending" + assert row.attempts == 0 + print("PASS: test_insert_creates_row") + finally: + _cleanup() + + +def test_compaction_on_update(): + """Multiple updates to same (doctype, name, 'update') collapse to one pending row.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + SyncOutbox.enqueue( + reference_doctype="Customer", + reference_name="Walk-In Cairo", + operation="update", + payload='{"name":"Walk-In Cairo","v":1}', + priority=50, + ) + SyncOutbox.enqueue( + reference_doctype="Customer", + reference_name="Walk-In Cairo", + operation="update", + payload='{"name":"Walk-In Cairo","v":2}', + priority=50, + ) + SyncOutbox.enqueue( + reference_doctype="Customer", + reference_name="Walk-In Cairo", + operation="update", + payload='{"name":"Walk-In Cairo","v":3}', + priority=50, + ) + count = frappe.db.count( + "Sync Outbox", + {"reference_doctype": "Customer", "reference_name": "Walk-In Cairo", "sync_status": "pending"}, + ) + assert count == 1, f"Expected 1 compacted row, got {count}" + + payload = frappe.db.get_value( + "Sync Outbox", + {"reference_doctype": "Customer", "reference_name": "Walk-In Cairo"}, + "payload", + ) + assert '"v":3' in payload, f"Latest payload should win, got: {payload}" + print("PASS: test_compaction_on_update") + finally: + _cleanup() + + +def test_terminal_ops_always_insert(): + """submit/cancel/delete never compact — they always insert new rows.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + for op in ("submit", "cancel", "delete"): + SyncOutbox.enqueue( + reference_doctype="Sales Invoice", + reference_name="SINV-CAI-2026-00001", + operation=op, + payload='{"name":"SINV-CAI-2026-00001"}', + priority=50, + ) + count = frappe.db.count( + "Sync Outbox", + {"reference_doctype": "Sales Invoice", "reference_name": "SINV-CAI-2026-00001"}, + ) + assert count == 3, f"Expected 3 terminal rows, got {count}" + print("PASS: test_terminal_ops_always_insert") + finally: + _cleanup() + + +def test_acked_row_not_compacted(): + """An acked row is ignored by compaction; new update creates a fresh pending row.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + row = SyncOutbox.enqueue( + reference_doctype="Customer", + reference_name="C1", + operation="update", + payload='{"v":1}', + priority=50, + ) + # Simulate successful sync + frappe.db.set_value("Sync Outbox", row.name, "sync_status", "acked") + frappe.db.commit() + + SyncOutbox.enqueue( + reference_doctype="Customer", + reference_name="C1", + operation="update", + payload='{"v":2}', + priority=50, + ) + pending = frappe.db.count( + "Sync Outbox", + {"reference_doctype": "Customer", "reference_name": "C1", "sync_status": "pending"}, + ) + acked = frappe.db.count( + "Sync Outbox", + {"reference_doctype": "Customer", "reference_name": "C1", "sync_status": "acked"}, + ) + assert pending == 1 and acked == 1, f"Expected pending=1, acked=1, got pending={pending}, acked={acked}" + print("PASS: test_acked_row_not_compacted") + finally: + _cleanup() + + +def run_all(): + test_insert_creates_row() + test_compaction_on_update() + test_terminal_ops_always_insert() + test_acked_row_not_compacted() + print("\nAll Sync Outbox tests PASSED") diff --git a/pos_next/sync/tests/test_outbox_drainer.py b/pos_next/sync/tests/test_outbox_drainer.py new file mode 100644 index 00000000..95c58176 --- /dev/null +++ b/pos_next/sync/tests/test_outbox_drainer.py @@ -0,0 +1,142 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from unittest.mock import MagicMock + + +def _cleanup(): + frappe.db.delete("Sync Outbox") + frappe.db.delete("Sync Dead Letter") + frappe.db.commit() + + +def test_push_if_due_noop_without_branch(): + """push_if_due does nothing when no Branch config exists or not due.""" + from pos_next.sync.outbox_drainer import push_if_due + push_if_due() + print("PASS: test_push_if_due_noop_without_branch") + + +def test_drainer_processes_pending_rows(): + """OutboxDrainer sends pending outbox rows to central.""" + _cleanup() + try: + from pos_next.sync.outbox_drainer import OutboxDrainer + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + + SyncOutbox.enqueue( + reference_doctype="Sales Invoice", + reference_name="TEST-SINV-DRAIN", + operation="submit", + payload='{"name":"TEST-SINV-DRAIN","docstatus":1}', + priority=50, + ) + + fake_session = MagicMock() + fake_resp = MagicMock() + fake_resp.status_code = 200 + fake_resp.json.return_value = { + "message": {"results": [{"name": "TEST-SINV-DRAIN", "sync_uuid": "", "status": "ok"}]} + } + fake_session.post.return_value = fake_resp + + drainer = OutboxDrainer(fake_session, branch_code="CAI") + acked, failed, dead = drainer.drain() + + assert acked >= 1, f"Expected at least 1 acked, got {acked}" + status = frappe.db.get_value("Sync Outbox", {"reference_name": "TEST-SINV-DRAIN"}, "sync_status") + assert status == "acked", f"Expected acked, got {status}" + print("PASS: test_drainer_processes_pending_rows") + finally: + _cleanup() + + +def test_drainer_handles_failure(): + """On failure, outbox row gets attempts incremented.""" + _cleanup() + try: + from pos_next.sync.outbox_drainer import OutboxDrainer + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + + SyncOutbox.enqueue( + reference_doctype="Sales Invoice", + reference_name="TEST-SINV-FAIL", + operation="submit", + payload='{"name":"TEST-SINV-FAIL"}', + priority=50, + ) + + fake_session = MagicMock() + fake_resp = MagicMock() + fake_resp.status_code = 200 + fake_resp.json.return_value = { + "message": {"results": [{"name": "TEST-SINV-FAIL", "sync_uuid": "", "status": "error", "error": "test error"}]} + } + fake_session.post.return_value = fake_resp + + drainer = OutboxDrainer(fake_session, branch_code="CAI") + acked, failed, dead = drainer.drain() + + assert failed >= 1 + row = frappe.get_all( + "Sync Outbox", + filters={"reference_name": "TEST-SINV-FAIL"}, + fields=["sync_status", "attempts", "last_error"], + )[0] + assert row.sync_status == "failed" + assert row.attempts == 1 + assert "test error" in (row.last_error or "") + print("PASS: test_drainer_handles_failure") + finally: + _cleanup() + + +def test_drainer_dead_letters(): + """After MAX_ATTEMPTS, row moves to dead letter.""" + _cleanup() + try: + from pos_next.sync.outbox_drainer import OutboxDrainer + from pos_next.pos_next.doctype.sync_outbox.sync_outbox import SyncOutbox + from pos_next.sync.defaults import MAX_ATTEMPTS_BEFORE_DEAD + + row = SyncOutbox.enqueue( + reference_doctype="Sales Invoice", + reference_name="TEST-SINV-DEAD", + operation="submit", + payload='{"name":"TEST-SINV-DEAD"}', + priority=50, + ) + frappe.db.set_value("Sync Outbox", row.name, { + "attempts": MAX_ATTEMPTS_BEFORE_DEAD, + "sync_status": "failed", + }) + frappe.db.commit() + + fake_session = MagicMock() + fake_resp = MagicMock() + fake_resp.status_code = 200 + fake_resp.json.return_value = { + "message": {"results": [{"name": "TEST-SINV-DEAD", "sync_uuid": "", "status": "error", "error": "persistent"}]} + } + fake_session.post.return_value = fake_resp + + drainer = OutboxDrainer(fake_session, branch_code="CAI") + acked, failed, dead = drainer.drain() + + assert dead >= 1 + assert not frappe.db.exists("Sync Outbox", {"reference_name": "TEST-SINV-DEAD"}) + assert frappe.db.exists("Sync Dead Letter", {"reference_name": "TEST-SINV-DEAD"}) + print("PASS: test_drainer_dead_letters") + finally: + _cleanup() + frappe.db.delete("Sync Dead Letter") + frappe.db.commit() + + +def run_all(): + test_push_if_due_noop_without_branch() + test_drainer_processes_pending_rows() + test_drainer_handles_failure() + test_drainer_dead_letters() + print("\nAll OutboxDrainer tests PASSED") diff --git a/pos_next/sync/tests/test_payload.py b/pos_next/sync/tests/test_payload.py new file mode 100644 index 00000000..dbf4aa09 --- /dev/null +++ b/pos_next/sync/tests/test_payload.py @@ -0,0 +1,61 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +def test_compute_hash_stable(): + """Same payload (order-independent) produces same hash.""" + from pos_next.sync.payload import compute_hash + a = {"name": "ITEM-001", "item_name": "Apple", "price": 100} + b = {"price": 100, "name": "ITEM-001", "item_name": "Apple"} + assert compute_hash(a) == compute_hash(b) + print("PASS: test_compute_hash_stable") + + +def test_compute_hash_different_on_change(): + from pos_next.sync.payload import compute_hash + a = {"name": "ITEM-001", "price": 100} + b = {"name": "ITEM-001", "price": 101} + assert compute_hash(a) != compute_hash(b) + print("PASS: test_compute_hash_different_on_change") + + +def test_compute_hash_ignores_meta_fields(): + """modified, modified_by, owner, creation are excluded from hash.""" + from pos_next.sync.payload import compute_hash + a = {"name": "ITEM-001", "price": 100, "modified": "2026-04-05 10:00:00", "modified_by": "a@x.com"} + b = {"name": "ITEM-001", "price": 100, "modified": "2026-04-05 11:00:00", "modified_by": "b@x.com"} + assert compute_hash(a) == compute_hash(b) + print("PASS: test_compute_hash_ignores_meta_fields") + + +def test_strip_meta(): + """strip_meta removes server-side meta fields.""" + from pos_next.sync.payload import strip_meta + payload = { + "name": "ITEM-001", + "price": 100, + "modified": "2026-04-05", + "modified_by": "a@x.com", + "owner": "admin", + "creation": "2026-01-01", + "docstatus": 0, + } + stripped = strip_meta(payload) + assert "modified" not in stripped + assert "modified_by" not in stripped + assert "owner" not in stripped + assert "creation" not in stripped + assert stripped["name"] == "ITEM-001" + assert stripped["price"] == 100 + assert "docstatus" in stripped # docstatus is kept — it's semantic + print("PASS: test_strip_meta") + + +def run_all(): + test_compute_hash_stable() + test_compute_hash_different_on_change() + test_compute_hash_ignores_meta_fields() + test_strip_meta() + print("\nAll Payload tests PASSED") diff --git a/pos_next/sync/tests/test_registry.py b/pos_next/sync/tests/test_registry.py new file mode 100644 index 00000000..5d9c9ac0 --- /dev/null +++ b/pos_next/sync/tests/test_registry.py @@ -0,0 +1,47 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + + +def test_registry_register_and_lookup(): + from pos_next.sync.adapters.base import BaseSyncAdapter + from pos_next.sync import registry + + class FakeItemAdapter(BaseSyncAdapter): + doctype = "Fake Item" + + registry.register(FakeItemAdapter) + got = registry.get_adapter("Fake Item") + assert isinstance(got, FakeItemAdapter) + print("PASS: test_registry_register_and_lookup") + + +def test_registry_unknown_returns_none(): + from pos_next.sync import registry + got = registry.get_adapter("Does Not Exist") + assert got is None + print("PASS: test_registry_unknown_returns_none") + + +def test_registry_list_registered(): + from pos_next.sync.adapters.base import BaseSyncAdapter + from pos_next.sync import registry + + class A(BaseSyncAdapter): + doctype = "Alpha" + + class B(BaseSyncAdapter): + doctype = "Beta" + + registry.register(A) + registry.register(B) + registered = registry.list_registered() + assert "Alpha" in registered + assert "Beta" in registered + print("PASS: test_registry_list_registered") + + +def run_all(): + test_registry_register_and_lookup() + test_registry_unknown_returns_none() + test_registry_list_registered() + print("\nAll Registry tests PASSED") diff --git a/pos_next/sync/tests/test_seeds.py b/pos_next/sync/tests/test_seeds.py new file mode 100644 index 00000000..66be2195 --- /dev/null +++ b/pos_next/sync/tests/test_seeds.py @@ -0,0 +1,76 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe + + +def _cleanup(): + frappe.db.delete("Sync Site Config") + frappe.db.commit() + + +def test_seeds_populate_registry(): + """seed_default_rules returns a list of Sync DocType Rule dicts.""" + from pos_next.sync.seeds import DEFAULT_SYNC_RULES + assert isinstance(DEFAULT_SYNC_RULES, list) + assert len(DEFAULT_SYNC_RULES) >= 20, f"Expected at least 20 seeded rules, got {len(DEFAULT_SYNC_RULES)}" + required_keys = {"doctype_name", "direction", "cdc_strategy", "conflict_rule", "priority"} + for rule in DEFAULT_SYNC_RULES: + missing = required_keys - set(rule.keys()) + assert not missing, f"Rule {rule.get('doctype_name')} missing keys: {missing}" + print("PASS: test_seeds_populate_registry") + + +def test_seeds_include_required_doctypes(): + """Seeds include the core DocTypes from the spec.""" + from pos_next.sync.seeds import DEFAULT_SYNC_RULES + names = {r["doctype_name"] for r in DEFAULT_SYNC_RULES} + required = { + "Item", "Item Price", "POS Profile", "Warehouse", "Customer", + "Sales Invoice", "Payment Entry", "POS Opening Shift", + "POS Closing Shift", "Stock Ledger Entry", "User", "Mode of Payment", + } + missing = required - names + assert not missing, f"Missing from seeds: {missing}" + print("PASS: test_seeds_include_required_doctypes") + + +def test_apply_seeds_to_config(): + """apply_seeds_to_config populates synced_doctypes on a config row.""" + _cleanup() + try: + from pos_next.sync.seeds import apply_seeds_to_config + doc = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Central", + "branch_code": "HQ", + "enabled": 1, + }) + doc.insert(ignore_permissions=True) + apply_seeds_to_config(doc) + doc.reload() + assert len(doc.synced_doctypes) >= 20, f"Expected >=20 rules, got {len(doc.synced_doctypes)}" + print("PASS: test_apply_seeds_to_config") + finally: + _cleanup() + + +def test_priorities_are_sorted_correctly(): + """POS Opening Shift has lowest priority (synced first).""" + from pos_next.sync.seeds import DEFAULT_SYNC_RULES + by_name = {r["doctype_name"]: r for r in DEFAULT_SYNC_RULES} + opening_prio = by_name["POS Opening Shift"]["priority"] + invoice_prio = by_name["Sales Invoice"]["priority"] + assert opening_prio < invoice_prio, ( + f"POS Opening Shift priority ({opening_prio}) should be < " + f"Sales Invoice priority ({invoice_prio})" + ) + print("PASS: test_priorities_are_sorted_correctly") + + +def run_all(): + test_seeds_populate_registry() + test_seeds_include_required_doctypes() + test_apply_seeds_to_config() + test_priorities_are_sorted_correctly() + print("\nAll Seeds tests PASSED") diff --git a/pos_next/sync/tests/test_submittable_adapter.py b/pos_next/sync/tests/test_submittable_adapter.py new file mode 100644 index 00000000..f8cb4c97 --- /dev/null +++ b/pos_next/sync/tests/test_submittable_adapter.py @@ -0,0 +1,24 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + + +def test_submittable_adapter_interface(): + """SubmittableAdapter has apply_incoming that handles docstatus.""" + from pos_next.sync.adapters.submittable import SubmittableAdapter + assert hasattr(SubmittableAdapter, "apply_incoming") + assert hasattr(SubmittableAdapter, "doctype") + print("PASS: test_submittable_adapter_interface") + + +def test_submittable_adapter_is_base_adapter(): + """SubmittableAdapter inherits from BaseSyncAdapter.""" + from pos_next.sync.adapters.submittable import SubmittableAdapter + from pos_next.sync.adapters.base import BaseSyncAdapter + assert issubclass(SubmittableAdapter, BaseSyncAdapter) + print("PASS: test_submittable_adapter_is_base_adapter") + + +def run_all(): + test_submittable_adapter_interface() + test_submittable_adapter_is_base_adapter() + print("\nAll SubmittableAdapter tests PASSED") diff --git a/pos_next/sync/tests/test_sync_site_config.py b/pos_next/sync/tests/test_sync_site_config.py new file mode 100644 index 00000000..15509c04 --- /dev/null +++ b/pos_next/sync/tests/test_sync_site_config.py @@ -0,0 +1,136 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.exceptions import ValidationError + + +def _cleanup(): + """Remove all Sync Site Config rows (for test isolation).""" + frappe.db.delete("Sync Site Config") + frappe.db.commit() + + +def test_branch_is_singleton(): + """A Branch-role Sync Site Config can only exist once per site.""" + _cleanup() + try: + doc1 = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Branch", + "branch_code": "CAI", + "enabled": 1, + "central_url": "https://central.test", + "sync_username": "sync@test.com", + "sync_password": "secret123", + }) + doc1.insert(ignore_permissions=True) + + doc2 = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Branch", + "branch_code": "ALX", + "enabled": 1, + "central_url": "https://central.test", + "sync_username": "sync2@test.com", + "sync_password": "secret456", + }) + + raised = False + try: + doc2.insert(ignore_permissions=True) + except ValidationError as e: + raised = True + assert "Branch" in str(e), f"Expected branch-singleton error, got: {e}" + + assert raised, "Second Branch-role config should have been rejected" + print("PASS: test_branch_is_singleton") + finally: + _cleanup() + + +def test_central_allows_multiple(): + """Central-role allows multiple Sync Site Config rows (one per branch).""" + _cleanup() + try: + for code in ("CAI", "ALX", "HQ"): + doc = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Central", + "branch_code": code, + "enabled": 1, + }) + doc.insert(ignore_permissions=True) + count = frappe.db.count("Sync Site Config") + assert count == 3, f"Expected 3 Central rows, got {count}" + print("PASS: test_central_allows_multiple") + finally: + _cleanup() + + +def test_branch_code_unique(): + """branch_code must be unique across Sync Site Config rows.""" + _cleanup() + try: + doc1 = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Central", + "branch_code": "CAI", + "enabled": 1, + }) + doc1.insert(ignore_permissions=True) + + doc2 = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Central", + "branch_code": "CAI", + "enabled": 1, + }) + raised = False + try: + doc2.insert(ignore_permissions=True) + except frappe.exceptions.DuplicateEntryError: + raised = True + except frappe.exceptions.UniqueValidationError: + raised = True + assert raised, "Duplicate branch_code should be rejected" + print("PASS: test_branch_code_unique") + finally: + _cleanup() + + +def test_https_enforced(): + """central_url must use https:// scheme (unless POS_NEXT_SYNC_ALLOW_HTTP=1).""" + import os + if os.environ.get("POS_NEXT_SYNC_ALLOW_HTTP") == "1": + print("SKIP: test_https_enforced (POS_NEXT_SYNC_ALLOW_HTTP=1 set)") + return + _cleanup() + try: + doc = frappe.get_doc({ + "doctype": "Sync Site Config", + "site_role": "Branch", + "branch_code": "CAI", + "enabled": 1, + "central_url": "http://insecure.test", + "sync_username": "sync@test.com", + "sync_password": "secret", + }) + raised = False + try: + doc.insert(ignore_permissions=True) + except ValidationError as e: + raised = True + assert "https" in str(e).lower() + assert raised, "http:// URL should have been rejected" + print("PASS: test_https_enforced") + finally: + _cleanup() + + +def run_all(): + test_branch_is_singleton() + test_central_allows_multiple() + test_branch_code_unique() + test_https_enforced() + print("\nAll Sync Site Config tests PASSED") diff --git a/pos_next/sync/tests/test_watermark.py b/pos_next/sync/tests/test_watermark.py new file mode 100644 index 00000000..ecdab0f4 --- /dev/null +++ b/pos_next/sync/tests/test_watermark.py @@ -0,0 +1,67 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +import frappe +from frappe.utils import now_datetime + + +def _cleanup(): + frappe.db.delete("Sync Watermark") + frappe.db.delete("Sync Tombstone") + frappe.db.commit() + + +def test_watermark_upsert(): + """Watermark CRUD via upsert helper.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_watermark.sync_watermark import SyncWatermark + ts = now_datetime() + row = SyncWatermark.upsert("Item", ts, records_pulled=10) + assert row.doctype_name == "Item" + assert row.records_pulled == 10 + + ts2 = now_datetime() + row2 = SyncWatermark.upsert("Item", ts2, records_pulled=5) + assert row2.name == row.name, "upsert should update existing row, not create new" + assert row2.records_pulled == 5 + print("PASS: test_watermark_upsert") + finally: + _cleanup() + + +def test_watermark_unique_per_doctype(): + """Only one Sync Watermark row per DocType.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_watermark.sync_watermark import SyncWatermark + ts = now_datetime() + SyncWatermark.upsert("Item", ts) + SyncWatermark.upsert("Customer", ts) + SyncWatermark.upsert("Item", ts) # should update, not insert + count = frappe.db.count("Sync Watermark") + assert count == 2, f"Expected 2 rows (Item, Customer), got {count}" + print("PASS: test_watermark_unique_per_doctype") + finally: + _cleanup() + + +def test_tombstone_record(): + """Creating tombstones is simple.""" + _cleanup() + try: + from pos_next.pos_next.doctype.sync_tombstone.sync_tombstone import SyncTombstone + t = SyncTombstone.record("Item", "ITEM-001") + assert t.reference_doctype == "Item" + assert t.reference_name == "ITEM-001" + assert t.deleted_at is not None + print("PASS: test_tombstone_record") + finally: + _cleanup() + + +def run_all(): + test_watermark_upsert() + test_watermark_unique_per_doctype() + test_tombstone_record() + print("\nAll Watermark/Tombstone tests PASSED") diff --git a/pos_next/sync/transport.py b/pos_next/sync/transport.py new file mode 100644 index 00000000..3316c8d9 --- /dev/null +++ b/pos_next/sync/transport.py @@ -0,0 +1,32 @@ +# Copyright (c) 2026, BrainWise and contributors +# For license information, please see license.txt + +"""HTTP transport helpers wrapping SyncSession. + +Provides a factory that builds a SyncSession from the Sync Site Config record. +""" + +import frappe + +from pos_next.sync.auth import SyncSession +from pos_next.sync.exceptions import SyncAuthError + + +def build_session_from_config(): + """ + Read the (singleton) Branch Sync Site Config and return a SyncSession. + + Raises SyncAuthError if no Branch config exists or credentials are missing. + """ + name = frappe.db.get_value("Sync Site Config", {"site_role": "Branch"}, "name") + if not name: + raise SyncAuthError("No Branch Sync Site Config found on this site") + cfg = frappe.get_doc("Sync Site Config", name) + if not (cfg.central_url and cfg.sync_username and cfg.sync_password): + raise SyncAuthError("Branch Sync Site Config missing credentials") + password = cfg.get_password("sync_password") + return SyncSession( + central_url=cfg.central_url, + username=cfg.sync_username, + password=password, + )