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104 lines
3.7 KiB
Plaintext
104 lines
3.7 KiB
Plaintext
-- 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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?column?
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----------
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init
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(1 row)
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot_t', 'test_decoding', true);
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?column?
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----------
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init
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(1 row)
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SELECT pg_drop_replication_slot('regression_slot_p');
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pg_drop_replication_slot
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--------------------------
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(1 row)
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot_p', 'test_decoding', false);
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?column?
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----------
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init
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(1 row)
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot_t2', 'test_decoding', true);
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?column?
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----------
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init
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(1 row)
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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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ERROR: replication slot "regression_slot_t" does not exist
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SELECT pg_drop_replication_slot('regression_slot_t2');
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ERROR: replication slot "regression_slot_t2" does not exist
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-- permanent slot has survived
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SELECT pg_drop_replication_slot('regression_slot_p');
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pg_drop_replication_slot
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--------------------------
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(1 row)
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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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?column?
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----------
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init
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(1 row)
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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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?column?
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----------
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init
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(1 row)
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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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data
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---------------------------------------------------------------------------------------------------------
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BEGIN
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table public.replication_example: INSERT: id[integer]:1 somedata[integer]:1 text[character varying]:'1'
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table public.replication_example: INSERT: id[integer]:2 somedata[integer]:1 text[character varying]:'2'
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COMMIT
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BEGIN
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table public.replication_example: INSERT: id[integer]:3 somedata[integer]:1 text[character varying]:'3'
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COMMIT
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(7 rows)
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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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data
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---------------------------------------------------------------------------------------------------------
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BEGIN
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table public.replication_example: INSERT: id[integer]:3 somedata[integer]:1 text[character varying]:'3'
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COMMIT
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(3 rows)
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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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ERROR: replication slot "regression_slot1" already exists
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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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ERROR: replication slot "regression_slot1" does not exist
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SELECT pg_drop_replication_slot('regression_slot2');
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ERROR: replication slot "regression_slot2" does not exist
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