mirror of
https://github.com/postgres/postgres.git
synced 2025-11-04 00:02:52 -05:00
7cdfeee320
This module provides SQL functions that allow to inspect logical decoding components. It currently allows to inspect the contents of serialized logical snapshots of a running database cluster, which is useful for debugging or educational purposes. Author: Bertrand Drouvot Reviewed-by: Amit Kapila, Shveta Malik, Peter Smith, Peter Eisentraut Reviewed-by: David G. Johnston Discussion: https://postgr.es/m/ZscuZ92uGh3wm4tW%40ip-10-97-1-34.eu-west-3.compute.internal
44 lines
1.4 KiB
SQL
44 lines
1.4 KiB
SQL
/* contrib/pg_logicalinspect/pg_logicalinspect--1.0.sql */
|
|
|
|
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
|
|
\echo Use "CREATE EXTENSION pg_logicalinspect" to load this file. \quit
|
|
|
|
--
|
|
-- pg_get_logical_snapshot_meta()
|
|
--
|
|
CREATE FUNCTION pg_get_logical_snapshot_meta(IN filename text,
|
|
OUT magic int4,
|
|
OUT checksum int8,
|
|
OUT version int4
|
|
)
|
|
AS 'MODULE_PATHNAME', 'pg_get_logical_snapshot_meta'
|
|
LANGUAGE C STRICT PARALLEL SAFE;
|
|
|
|
REVOKE EXECUTE ON FUNCTION pg_get_logical_snapshot_meta(text) FROM PUBLIC;
|
|
GRANT EXECUTE ON FUNCTION pg_get_logical_snapshot_meta(text) TO pg_read_server_files;
|
|
|
|
--
|
|
-- pg_get_logical_snapshot_info()
|
|
--
|
|
CREATE FUNCTION pg_get_logical_snapshot_info(IN filename text,
|
|
OUT state text,
|
|
OUT xmin xid,
|
|
OUT xmax xid,
|
|
OUT start_decoding_at pg_lsn,
|
|
OUT two_phase_at pg_lsn,
|
|
OUT initial_xmin_horizon xid,
|
|
OUT building_full_snapshot boolean,
|
|
OUT in_slot_creation boolean,
|
|
OUT last_serialized_snapshot pg_lsn,
|
|
OUT next_phase_at xid,
|
|
OUT committed_count int4,
|
|
OUT committed_xip xid[],
|
|
OUT catchange_count int4,
|
|
OUT catchange_xip xid[]
|
|
)
|
|
AS 'MODULE_PATHNAME', 'pg_get_logical_snapshot_info'
|
|
LANGUAGE C STRICT PARALLEL SAFE;
|
|
|
|
REVOKE EXECUTE ON FUNCTION pg_get_logical_snapshot_info(text) FROM PUBLIC;
|
|
GRANT EXECUTE ON FUNCTION pg_get_logical_snapshot_info(text) TO pg_read_server_files;
|