Re: [Proposal] Adding callback support for custom statistics kinds

Sami Imseih <samimseih@gmail.com>

From: Sami Imseih <samimseih@gmail.com>

To: Michael Paquier <michael@paquier.xyz>

Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>

Date: 2025-11-20T02:10:43Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Fix const correctness in pgstat data serialization callbacks
- 167cb26718e3 19 (unreleased) landed
test_custom_stats: Add tests with read/write of auxiliary data
- 481783e69f14 19 (unreleased) landed
Allow cumulative statistics to read/write auxiliary data from/to disk
- 4ba012a8ed9c 19 (unreleased) landed
test_custom_stats: Test module for custom cumulative statistics
- 31280d96a648 19 (unreleased) landed
injection_points: Remove portions related to custom pgstats
- d52c24b0f808 19 (unreleased) landed
Rename routines for write/read of pgstats file
- ed823da12891 19 (unreleased) landed

It just occurred to me that the documentation [0] should be
updated to describe the callbacks. I will do that in the next
revision.

[0] https://www.postgresql.org/docs/current/xfunc-c.html#XFUNC-ADDIN-CUSTOM-CUMULATIVE-STATISTICS

--
Sami Imseih
Amazon Web Services (AWS)