mirror of
https://github.com/postgres/postgres.git
synced 2026-06-20 15:41:09 -04:00
Michael Paquier
b1e48bbe64
This includes two changes:
- Addition of a new function pg_xact_commit_timestamp_origin() able, for
a given transaction ID, to return the commit timestamp and replication
origin of this transaction. An equivalent function existed in
pglogical.
- Addition of the replication origin to pg_last_committed_xact().
The commit timestamp manager includes already APIs able to return the
replication origin of a transaction on top of its commit timestamp, but
the code paths for replication origins were never stressed as those
functions have never looked for a replication origin, and the SQL
functions available have never included this information since their
introduction in 73c986a.
While on it, refactor a test of modules/commit_ts/ to use tstzrange() to
check that a transaction timestamp is within the wanted range, making
the test a bit easier to read.
Bump catalog version.
Author: Movead Li
Reviewed-by: Madan Kumar, Michael Paquier
Discussion: https://postgr.es/m/2020051116430836450630@highgo.ca
58 lines
2.3 KiB
SQL
58 lines
2.3 KiB
SQL
--
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-- Commit Timestamp
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--
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SHOW track_commit_timestamp;
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CREATE TABLE committs_test(id serial, ts timestamptz default now());
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INSERT INTO committs_test DEFAULT VALUES;
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INSERT INTO committs_test DEFAULT VALUES;
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INSERT INTO committs_test DEFAULT VALUES;
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SELECT id,
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pg_xact_commit_timestamp(xmin) >= ts,
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pg_xact_commit_timestamp(xmin) <= now(),
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pg_xact_commit_timestamp(xmin) - ts < '60s' -- 60s should give a lot of reserve
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FROM committs_test
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ORDER BY id;
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DROP TABLE committs_test;
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SELECT pg_xact_commit_timestamp('0'::xid);
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SELECT pg_xact_commit_timestamp('1'::xid);
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SELECT pg_xact_commit_timestamp('2'::xid);
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SELECT x.xid::text::bigint > 0 as xid_valid,
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x.timestamp <@ tstzrange('-infinity'::timestamptz, now()) AS ts_in_range,
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roident != 0 AS valid_roident
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FROM pg_last_committed_xact() x;
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-- Test non-normal transaction ids.
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SELECT * FROM pg_xact_commit_timestamp_origin(NULL); -- ok, NULL
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SELECT * FROM pg_xact_commit_timestamp_origin('0'::xid); -- error
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SELECT * FROM pg_xact_commit_timestamp_origin('1'::xid); -- ok, NULL
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SELECT * FROM pg_xact_commit_timestamp_origin('2'::xid); -- ok, NULL
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-- Test transaction without replication origin
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SELECT txid_current() as txid_no_origin \gset
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SELECT x.timestamp <@ tstzrange('-infinity'::timestamptz, now()) AS ts_in_range,
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roident != 0 AS valid_roident
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FROM pg_last_committed_xact() x;
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SELECT x.timestamp <@ tstzrange('-infinity'::timestamptz, now()) AS ts_in_range,
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roident != 0 AS valid_roident
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FROM pg_xact_commit_timestamp_origin(:'txid_no_origin') x;
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-- Test transaction with replication origin
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SELECT pg_replication_origin_create('test_commit_ts: get_origin') != 0
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AS valid_roident;
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SELECT pg_replication_origin_session_setup('test_commit_ts: get_origin');
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SELECT txid_current() as txid_with_origin \gset
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SELECT x.timestamp <@ tstzrange('-infinity'::timestamptz, now()) AS ts_in_range, r.roname
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FROM pg_last_committed_xact() x, pg_replication_origin r
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WHERE r.roident = x.roident;
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SELECT x.timestamp <@ tstzrange('-infinity'::timestamptz, now()) AS ts_in_range, r.roname
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FROM pg_xact_commit_timestamp_origin(:'txid_with_origin') x, pg_replication_origin r
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WHERE r.roident = x.roident;
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SELECT pg_replication_origin_session_reset();
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SELECT pg_replication_origin_drop('test_commit_ts: get_origin');
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