[18.0][ADD] auditlog_clickhouse_read: add FDW read mode

auditlog_clickhouse_read/README.rst

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+===========================================
+Read auditlog records stored in clickhouse.
+===========================================
+
+.. 
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+
+This module extends the audit log integration with ClickHouse to let
+Odoo read audit log data through PostgreSQL Foreign Data Wrapper (FDW).
+
+When FDW read mode is enabled, standard Odoo audit log views continue to
+work without additional user tools or direct database access, while the
+data is read from ClickHouse. Audit log records become read-only in Odoo
+while this mode is active.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Use Cases / Context
+===================
+
+Business need:
+
+In some deployments, audit logs grow quickly and become expensive to
+keep and query only in PostgreSQL. At the same time, auditors and
+administrators still need to review audit trails from the standard Odoo
+interface without learning new tools or getting direct access to
+external databases.
+
+This module is useful in environments where audit log storage is moved
+to ClickHouse, but end users must continue working with the standard
+Odoo Audit Log screens.
+
+Approach:
+
+The module keeps the usual Odoo audit log interface while changing the
+read source behind it. Instead of reading audit log data from local
+PostgreSQL audit tables, Odoo can read it through PostgreSQL foreign
+tables backed by ClickHouse.
+
+This allows administrators to keep the familiar menus, forms, filters,
+and grouping options while using ClickHouse as the effective source for
+audit log reads.
+
+Useful information:
+
+The module is especially useful in databases with high audit log volumes
+or in setups where audit data should be stored outside the main
+PostgreSQL audit tables.
+
+When FDW read mode is enabled, audit log records are read-only in Odoo.
+If needed, administrators can disable FDW read mode and restore reading
+from the local PostgreSQL audit log tables.
+
+Configuration
+=============
+
+To configure this module, you need to:
+
+1.  Make sure the PostgreSQL extension ``pg_clickhouse`` is installed
+    and available on the PostgreSQL server used by Odoo.
+
+2.  Make sure the ClickHouse database is reachable from the Odoo server.
+
+3.  Make sure the audit log tables already exist in ClickHouse.
+
+4.  Activate developer mode in Odoo.
+
+5.  Go to *Settings > Technical > Auditlog > ClickHouse Configurations*.
+
+6.  Open the active ClickHouse configuration used for audit log export.
+
+7.  Fill in or verify the connection parameters:
+
+    - *Hostname or IP*
+    - *TCP Port*
+    - *Database name*
+    - *User*
+    - *Password*
+
+8.  Use *Test Connection* to verify that Odoo can connect to ClickHouse.
+
+9.  Use *Create Auditlog Tables* if the ClickHouse audit log tables have
+    not yet been created.
+
+10. Click *Enable FDW read* to switch standard Odoo audit log views to
+    ClickHouse-backed foreign tables.
+
+Important notes:
+
+- Only the active ClickHouse configuration can enable FDW read.
+- The PostgreSQL user used by Odoo must have the required privileges to
+  create and use FDW objects.
+- While FDW read is enabled, the active ClickHouse configuration cannot
+  be deactivated, deleted, or changed for connection-related fields
+  until FDW read is disabled.
+
+Usage
+=====
+
+To use this module, you need to:
+
+1. Go to *Settings > Technical > Auditlog > ClickHouse Configurations*.
+
+2. Open the active ClickHouse configuration.
+
+3. Click *Enable FDW read*.
+
+4. Open the standard audit log menus in Odoo:
+
+   - *Settings > Technical > Audit > Logs*
+
+5. Review audit log records as usual from the standard Odoo interface.
+
+6. Use the existing search, filters, and group by options in audit log
+   views to analyze audit data stored in ClickHouse.
+
+7. Open an audited record and use the standard *View Logs* action when
+   available. The action continues to open the related audit log entries
+   through the standard Odoo interface.
+
+Important notes:
+
+- While FDW read mode is enabled, audit log records are read-only in
+  Odoo.
+- To return to local PostgreSQL audit log tables, go back to the active
+  ClickHouse configuration and click *Disable FDW read*.
+
+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_read%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
+
+Contributors
+------------
+
+- `Cetmix <https://cetmix.com/>`__
+
+  - Ivan Sokolov
+  - George Smirnov
+  - Dmitry Meita
+
+Other credits
+-------------
+
+The development of this module has been financially supported by:
+
+- Geschäftsstelle Sozialinfo
+
+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_read>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

auditlog_clickhouse_read/__init__.py

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+# Copyright (C) 2026 Cetmix OÜ
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from . import models

auditlog_clickhouse_read/__manifest__.py

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+# Copyright (C) 2026 Cetmix OÜ
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+{
+    "name": "Read auditlog records stored in clickhouse.",
+    "version": "18.0.1.0.0",
+    "summary": "Read auditlog from clickhouse using FDW",
+    "category": "Tools",
+    "license": "AGPL-3",
+    "author": "Odoo Community Association (OCA), Cetmix",
+    "website": "https://github.com/OCA/server-tools",
+    "depends": [
+        "auditlog_clickhouse_write",
+    ],
+    "data": [
+        "views/auditlog_clickhouse_config_views.xml",
+    ],
+}