192 lines
8.5 KiB
PL/PgSQL
192 lines
8.5 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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-- monitoring functions for slot directories
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SELECT count(*) >= 0 AS ok FROM pg_ls_logicalmapdir();
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SELECT count(*) >= 0 AS ok FROM pg_ls_logicalsnapdir();
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SELECT count(*) >= 0 AS ok FROM pg_ls_replslotdir('regression_slot_p');
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SELECT count(*) >= 0 AS ok FROM pg_ls_replslotdir('not_existing_slot'); -- fails
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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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--
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-- Test copy functions for logical replication slots
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--
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-- Create and copy logical slots
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SELECT 'init' FROM pg_create_logical_replication_slot('orig_slot1', 'test_decoding', false);
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SELECT 'copy' FROM pg_copy_logical_replication_slot('orig_slot1', 'copied_slot1_no_change');
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SELECT 'copy' FROM pg_copy_logical_replication_slot('orig_slot1', 'copied_slot1_change_plugin', false, 'pgoutput');
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SELECT 'copy' FROM pg_copy_logical_replication_slot('orig_slot1', 'copied_slot1_change_plugin_temp', true, 'pgoutput');
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-- Check all copied slots status
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SELECT
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o.slot_name, o.plugin, o.temporary, c.slot_name, c.plugin, c.temporary
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FROM
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(SELECT * FROM pg_replication_slots WHERE slot_name LIKE 'orig%') as o
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LEFT JOIN pg_replication_slots as c ON o.restart_lsn = c.restart_lsn AND o.confirmed_flush_lsn = c.confirmed_flush_lsn
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WHERE
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o.slot_name != c.slot_name
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ORDER BY o.slot_name, c.slot_name;
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-- Now we have maximum 4 replication slots. Check slots are properly
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-- released even when raise error during creating the target slot.
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SELECT 'copy' FROM pg_copy_logical_replication_slot('orig_slot1', 'failed'); -- error
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-- temporary slots were dropped automatically
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SELECT pg_drop_replication_slot('orig_slot1');
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SELECT pg_drop_replication_slot('copied_slot1_no_change');
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SELECT pg_drop_replication_slot('copied_slot1_change_plugin');
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-- Test based on the temporary logical slot
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SELECT 'init' FROM pg_create_logical_replication_slot('orig_slot2', 'test_decoding', true);
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SELECT 'copy' FROM pg_copy_logical_replication_slot('orig_slot2', 'copied_slot2_no_change');
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SELECT 'copy' FROM pg_copy_logical_replication_slot('orig_slot2', 'copied_slot2_change_plugin', true, 'pgoutput');
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SELECT 'copy' FROM pg_copy_logical_replication_slot('orig_slot2', 'copied_slot2_change_plugin_temp', false, 'pgoutput');
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-- Check all copied slots status
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SELECT
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o.slot_name, o.plugin, o.temporary, c.slot_name, c.plugin, c.temporary
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FROM
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(SELECT * FROM pg_replication_slots WHERE slot_name LIKE 'orig%') as o
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LEFT JOIN pg_replication_slots as c ON o.restart_lsn = c.restart_lsn AND o.confirmed_flush_lsn = c.confirmed_flush_lsn
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WHERE
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o.slot_name != c.slot_name
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ORDER BY o.slot_name, c.slot_name;
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-- Cannot copy a logical slot to a physical slot
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SELECT 'copy' FROM pg_copy_physical_replication_slot('orig_slot2', 'failed'); -- error
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-- temporary slots were dropped automatically
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SELECT pg_drop_replication_slot('copied_slot2_change_plugin_temp');
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--
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-- Test copy functions for physical replication slots
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--
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-- Create and copy physical slots
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SELECT 'init' FROM pg_create_physical_replication_slot('orig_slot1', true);
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SELECT 'init' FROM pg_create_physical_replication_slot('orig_slot2', false);
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SELECT 'copy' FROM pg_copy_physical_replication_slot('orig_slot1', 'copied_slot1_no_change');
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SELECT 'copy' FROM pg_copy_physical_replication_slot('orig_slot1', 'copied_slot1_temp', true);
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-- Check all copied slots status. Since all slots don't reserve WAL we check only other fields.
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SELECT slot_name, slot_type, temporary FROM pg_replication_slots;
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-- Cannot copy a physical slot to a logical slot
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SELECT 'copy' FROM pg_copy_logical_replication_slot('orig_slot1', 'failed'); -- error
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-- Cannot copy a physical slot that doesn't reserve WAL
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SELECT 'copy' FROM pg_copy_physical_replication_slot('orig_slot2', 'failed'); -- error
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-- temporary slots were dropped automatically
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SELECT pg_drop_replication_slot('orig_slot1');
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SELECT pg_drop_replication_slot('orig_slot2');
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SELECT pg_drop_replication_slot('copied_slot1_no_change');
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-- Test based on the temporary physical slot
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SELECT 'init' FROM pg_create_physical_replication_slot('orig_slot2', true, true);
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SELECT 'copy' FROM pg_copy_physical_replication_slot('orig_slot2', 'copied_slot2_no_change');
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SELECT 'copy' FROM pg_copy_physical_replication_slot('orig_slot2', 'copied_slot2_notemp', false);
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-- Check all copied slots status
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SELECT
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o.slot_name, o.temporary, c.slot_name, c.temporary
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FROM
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(SELECT * FROM pg_replication_slots WHERE slot_name LIKE 'orig%') as o
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LEFT JOIN pg_replication_slots as c ON o.restart_lsn = c.restart_lsn
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WHERE
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o.slot_name != c.slot_name
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ORDER BY o.slot_name, c.slot_name;
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SELECT pg_drop_replication_slot('orig_slot2');
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SELECT pg_drop_replication_slot('copied_slot2_no_change');
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SELECT pg_drop_replication_slot('copied_slot2_notemp');
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-- Test failover option of slots.
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SELECT 'init' FROM pg_create_logical_replication_slot('failover_true_slot', 'test_decoding', false, false, true);
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SELECT 'init' FROM pg_create_logical_replication_slot('failover_false_slot', 'test_decoding', false, false, false);
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SELECT 'init' FROM pg_create_logical_replication_slot('failover_default_slot', 'test_decoding', false, false);
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SELECT 'init' FROM pg_create_physical_replication_slot('physical_slot');
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SELECT slot_name, slot_type, failover FROM pg_replication_slots;
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SELECT pg_drop_replication_slot('failover_true_slot');
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SELECT pg_drop_replication_slot('failover_false_slot');
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SELECT pg_drop_replication_slot('failover_default_slot');
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SELECT pg_drop_replication_slot('physical_slot');
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