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7326a7d638
This was broken in commit 9c7d06d606, which inadvertently gave the
wrong value to fast_forward in one StartupDecodingContext call. Fix by
flipping the value. Add a test for the obvious error, namely trying to
initialize a replication slot with an nonexistent output plugin.
While at it, move the CreateDecodingContext call earlier, so that any
errors are reported before sending the CopyBoth message.
Author: Dave Cramer <davecramer@gmail.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/CADK3HHLVkeRe1v4P02-5hj55H3_yJg3AEtpXyEY5T3wuzO2jSg@mail.gmail.com
79 lines
3.3 KiB
PL/PgSQL
79 lines
3.3 KiB
PL/PgSQL
-- predictability
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SET synchronous_commit = on;
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot_p', 'test_decoding');
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot_t', 'test_decoding', true);
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SELECT pg_drop_replication_slot('regression_slot_p');
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot_p', 'test_decoding', false);
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot_t2', 'test_decoding', true);
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SELECT pg_create_logical_replication_slot('foo', 'nonexistent');
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-- here we want to start a new session and wait till old one is gone
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select pg_backend_pid() as oldpid \gset
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\c -
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SET synchronous_commit = on;
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do 'declare c int = 0;
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begin
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while (select count(*) from pg_replication_slots where active_pid = '
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:'oldpid'
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') > 0 loop c := c + 1; perform pg_sleep(0.01); end loop;
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raise log ''slot test looped % times'', c;
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end';
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-- should fail because the temporary slots were dropped automatically
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SELECT pg_drop_replication_slot('regression_slot_t');
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SELECT pg_drop_replication_slot('regression_slot_t2');
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-- permanent slot has survived
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SELECT pg_drop_replication_slot('regression_slot_p');
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-- test switching between slots in a session
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot1', 'test_decoding', true);
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CREATE TABLE replication_example(id SERIAL PRIMARY KEY, somedata int, text varchar(120));
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BEGIN;
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INSERT INTO replication_example(somedata, text) VALUES (1, 1);
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INSERT INTO replication_example(somedata, text) VALUES (1, 2);
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COMMIT;
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot2', 'test_decoding', true);
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INSERT INTO replication_example(somedata, text) VALUES (1, 3);
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SELECT data FROM pg_logical_slot_get_changes('regression_slot1', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
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SELECT data FROM pg_logical_slot_get_changes('regression_slot2', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
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INSERT INTO replication_example(somedata, text) VALUES (1, 4);
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INSERT INTO replication_example(somedata, text) VALUES (1, 5);
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SELECT pg_current_wal_lsn() AS wal_lsn \gset
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INSERT INTO replication_example(somedata, text) VALUES (1, 6);
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SELECT end_lsn FROM pg_replication_slot_advance('regression_slot1', :'wal_lsn') \gset
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SELECT slot_name FROM pg_replication_slot_advance('regression_slot2', pg_current_wal_lsn());
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SELECT :'wal_lsn' = :'end_lsn';
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SELECT data FROM pg_logical_slot_get_changes('regression_slot1', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
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SELECT data FROM pg_logical_slot_get_changes('regression_slot2', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
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DROP TABLE replication_example;
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-- error
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot1', 'test_decoding', true);
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-- both should error as they should be dropped on error
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SELECT pg_drop_replication_slot('regression_slot1');
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SELECT pg_drop_replication_slot('regression_slot2');
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-- slot advance with physical slot, error with non-reserved slot
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SELECT slot_name FROM pg_create_physical_replication_slot('regression_slot3');
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SELECT pg_replication_slot_advance('regression_slot3', '0/0'); -- invalid LSN
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SELECT pg_replication_slot_advance('regression_slot3', '0/1'); -- error
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SELECT pg_drop_replication_slot('regression_slot3');
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