[18.0][IMP] auditlog_clickhouse: add read via pg_clickhouse

auditlog_clickhouse/README.rst

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+===================================
+Audit Log ClickHouse store and read
+===================================
+
+.. 
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+   !! This file is generated by oca-gen-addon-readme !!
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+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Beta
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-OCA%2Fserver--tools-lightgray.png?logo=github
+    :target: https://github.com/OCA/server-tools/tree/18.0/auditlog_clickhouse
+    :alt: OCA/server-tools
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+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module implements buffered asynchronous transfers of audit logs
+from PostgreSQL to ClickHouse. Storing audit data in a columnar database
+that is write-only prevents database bloat, makes audit records
+effectively immutable, and allows for scaling to very large volumes of
+logs without slowing down normal transactions. Audit logs are written
+asynchronously to reduce the load on business operations. Audit logs
+stored in ClickHouse are displayed in standard Odoo audit log views
+(logs, log lines, forms with detailed log information) without any
+changes to existing view definitions.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Use Cases / Context
+===================
+
+The auditlog module stores audit data in PostgreSQL. In production
+systems with extensive audit rules, these tables grow without limits,
+causing three issues:
+
+- Database bloat;
+- Immutability gap: Members of group_auditlog_manager (implied by
+  base.group_system) have full CRUD access to audit tables, allowing
+  audit records to be altered or deleted via UI, ORM, or SQL;
+- Performance overhead: Audit logging runs synchronously in the same
+  transaction and performs multiple ORM create() calls, adding latency
+  to audited operations.
+
+Configuration
+=============
+
+This module requires:
+
+- A reachable ClickHouse server.
+- Python dependency ``clickhouse-driver`` available in the Odoo
+  environment.
+- A ClickHouse database created in advance (the module does **not**
+  create databases/users/grants).
+- A ClickHouse user with at least:
+
+  - ``INSERT`` and ``CREATE TABLE`` privileges on the target database.
+
+- The ``pg_clickhouse`` extension installed on the PostgreSQL server.
+
+Steps:
+
+- Make sure ``clickhouse-driver`` is available in your system.
+- Install the module.
+- Configure the connection parameters in Odoo:
+
+  - **Settings > Technical > Auditlog > Clickhouse configuration**
+  - Fill in the following parameters:
+
++---------------------------------------+
+| Field                                 |
++=======================================+
+| Hostname or IP                        |
++---------------------------------------+
+| TCP port                              |
++---------------------------------------+
+| ClickHouse database name              |
++---------------------------------------+
+| ClickHouse user                       |
++---------------------------------------+
+| ClickHouse Password                   |
++---------------------------------------+
+| queue_job_batch_size (default = 1000) |
++---------------------------------------+
+| channel_id (default root)             |
++---------------------------------------+
+
+- Click **Test connection**.
+- Optionally, click **Create Auditlog Tables** to create the tables in
+  the target database.
+- Click **Setup FDW read** to configure the Foreign Data Wrapper so that
+  standard Odoo audit log views read data directly from ClickHouse.
+
+Usage
+=====
+
+Once auditlog_clickhouse is installed and configured:
+
+- Users perform tracked operations (create, write, unlink, read, export)
+  on models with active auditlog.rule subscriptions. This behavior is
+  unchanged from the base auditlog module.
+- Log data is serialized and stored in the local auditlog.log.buffer
+  table instantly. The standard auditlog tables are not populated.
+- Every 5 minutes (default), the Cron job runs, pushes data to
+  ClickHouse, and cleans the local buffer.
+- Data is permanently stored in ClickHouse and cannot be modified or
+  deleted via Odoo.
+
+All standard Odoo audit log views work as expected - logs, log lines,
+and forms with detailed log data display data from ClickHouse. Search,
+filtering, and grouping (by user, model, date, session, query) work
+through FDW with the query being forwarded to ClickHouse. The “View
+logs” quick access button in audited model forms works as expected.
+Audit logs are read-only. Attempting to modify or delete a log entry
+from the user interface raises an error.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/server-tools/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us to smash it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/server-tools/issues/new?body=module:%20auditlog_clickhouse%0Aversion:%2018.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+-------
+
+* Cetmix
+
+Maintainers
+-----------
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+This module is part of the `OCA/server-tools <https://github.com/OCA/server-tools/tree/18.0/auditlog_clickhouse>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

auditlog_clickhouse/__init__.py

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+from . import models

auditlog_clickhouse/__manifest__.py

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+{
+    "name": "Audit Log ClickHouse store and read",
+    "version": "18.0.1.0.0",
+    "summary": "Asynchronous audit log storage in ClickHouse",
+    "category": "Tools",
+    "license": "AGPL-3",
+    "author": "Odoo Community Association (OCA), Cetmix",
+    "website": "https://github.com/OCA/server-tools",
+    "depends": [
+        "auditlog",
+        "queue_job",
+    ],
+    "external_dependencies": {
+        "python": ["clickhouse-driver"],
+    },
+    "data": [
+        "security/ir.model.access.csv",
+        "data/auditlog_clickhouse_queue.xml",
+        "views/auditlog_clickhouse_config_views.xml",
+    ],
+}

auditlog_clickhouse/data/auditlog_clickhouse_queue.xml

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+<odoo noupdate="1">
+    <record id="ir_cron_auditlog_clickhouse_enqueue_flush" model="ir.cron">
+        <field name="name">Auditlog ClickHouse: enqueue buffer flush</field>
+        <field name="model_id" ref="model_auditlog_log_buffer" />
+        <field name="state">code</field>
+        <field name="code">model._cron_flush_to_clickhouse()</field>
+        <field name="interval_number">5</field>
+        <field name="interval_type">minutes</field>
+        <field name="active">True</field>
+        <field name="user_id" ref="base.user_root" />
+    </record>
+
+    <record
+        id="action_configure_auditlog_clickhouse_cron"
+        model="ir.actions.act_window"
+    >
+        <field name="name">Edit buffer flush schedule</field>
+        <field name="res_model">ir.cron</field>
+        <field
+            name="res_id"
+            ref="auditlog_clickhouse.ir_cron_auditlog_clickhouse_enqueue_flush"
+        />
+        <field name="type">ir.actions.act_window</field>
+        <field name="view_mode">form</field>
+        <field name="target">new</field>
+    </record>
+</odoo>