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34 lines
1.1 KiB
ReStructuredText
34 lines
1.1 KiB
ReStructuredText
.. meta::
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:description: Audit actions on tables in Postgres with Hasura
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:keywords: hasura, docs, guide, postgres, audit table
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.. _guides_auditing:
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Auditing actions on tables in Postgres
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======================================
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.. contents:: Table of contents
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:backlinks: none
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:depth: 1
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:local:
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Typically audit logging is added to some of the tables to comply with various certifications.
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You may want to capture the user information (role and the session variables) for every change in Postgres that is done through the GraphQL engine.
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For every mutation, Hasura roughly executes the following transaction:
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.. code-block:: sql
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BEGIN;
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SET local "hasura.user" = '{"x-hasura-role": "role", ... various session variables}'
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SQL related to the mutation
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COMMIT;
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This information can therefore be captured in any trigger on the underlying tables by using the ``current_setting`` function as follows:
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.. code-block:: sql
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current_setting('hasura.user');
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We've set up some utility functions that'll let you quickly get started with auditing in this `repo <https://github.com/hasura/audit-trigger>`__.
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