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Add support for temporary replication slots

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This allows creating temporary replication slots that are removed
automatically at the end of the session or on error.

From: Petr Jelinek <petr.jelinek@2ndquadrant.com>
This commit is contained in:
Peter Eisentraut
2016-12-08 12:00:00 -05:00
parent e7f051b8f9
commit a924c327e2
18 changed files with 237 additions and 51 deletions
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20
contrib/test_decoding/sql/slot.sql Normal file
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SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot_p', 'test_decoding');
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot_t', 'test_decoding', true);
SELECT pg_drop_replication_slot('regression_slot_p');
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot_p', 'test_decoding', false);
-- reconnect to clean temp slots
\c
SELECT pg_drop_replication_slot('regression_slot_p');
-- should fail because the temporary slot was dropped automatically
SELECT pg_drop_replication_slot('regression_slot_t');
-- test switching between slots in a session
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot1', 'test_decoding', true);
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot2', 'test_decoding', true);
SELECT * FROM pg_logical_slot_get_changes('regression_slot1', NULL, NULL);
SELECT * FROM pg_logical_slot_get_changes('regression_slot2', NULL, NULL);