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Add decoding of sequences to test_decoding

Browse Source 
Commit 0da92dc530 improved the logical decoding infrastructure to handle
sequences, and did various changes to related parts (WAL logging etc.).
But it did not include any implementation of the new callbacks added to
OutputPluginCallbacks.

This extends test_decoding with two callbacks to decode sequences. The
decoding of sequences may be disabled using 'include-sequences', a new
option of the output plugin.

Author: Tomas Vondra, Cary Huang
Reviewed-by: Peter Eisentraut, Hannu Krosing, Andres Freund
Discussion: https://postgr.es/m/d045f3c2-6cfb-06d3-5540-e63c320df8bc@enterprisedb.com
Discussion: https://postgr.es/m/1710ed7e13b.cd7177461430746.3372264562543607781@highgo.ca
This commit is contained in:
Tomas Vondra
2022-02-12 00:46:07 +01:00
parent 44fa84881f
commit 80901b3291
24 changed files with 567 additions and 55 deletions
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119
contrib/test_decoding/sql/sequence.sql Normal file
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-- predictability
SET synchronous_commit = on;
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
CREATE SEQUENCE test_sequence;
-- test the sequence changes by several nextval() calls
SELECT nextval('test_sequence');
SELECT nextval('test_sequence');
SELECT nextval('test_sequence');
SELECT nextval('test_sequence');
-- test the sequence changes by several ALTER commands
ALTER SEQUENCE test_sequence INCREMENT BY 10;
SELECT nextval('test_sequence');
ALTER SEQUENCE test_sequence START WITH 3000;
ALTER SEQUENCE test_sequence MAXVALUE 10000;
ALTER SEQUENCE test_sequence RESTART WITH 4000;
SELECT nextval('test_sequence');
-- test the sequence changes by several setval() calls
SELECT setval('test_sequence', 3500);
SELECT nextval('test_sequence');
SELECT setval('test_sequence', 3500, true);
SELECT nextval('test_sequence');
SELECT setval('test_sequence', 3500, false);
SELECT nextval('test_sequence');
-- show results and drop sequence
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '0');
DROP SEQUENCE test_sequence;
-- rollback on sequence creation and update
BEGIN;
CREATE SEQUENCE test_sequence;
CREATE TABLE test_table (a INT);
SELECT nextval('test_sequence');
SELECT nextval('test_sequence');
SELECT nextval('test_sequence');
SELECT setval('test_sequence', 3000);
SELECT nextval('test_sequence');
SELECT nextval('test_sequence');
SELECT nextval('test_sequence');
ALTER SEQUENCE test_sequence RESTART WITH 6000;
INSERT INTO test_table VALUES( (SELECT nextval('test_sequence')) );
SELECT nextval('test_sequence');
ROLLBACK;
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
-- rollback on table creation with serial column
BEGIN;
CREATE TABLE test_table (a SERIAL, b INT);
INSERT INTO test_table (b) VALUES (100);
INSERT INTO test_table (b) VALUES (200);
INSERT INTO test_table (b) VALUES (300);
SELECT setval('test_table_a_seq', 3000);
INSERT INTO test_table (b) VALUES (400);
INSERT INTO test_table (b) VALUES (500);
INSERT INTO test_table (b) VALUES (600);
ALTER SEQUENCE test_table_a_seq RESTART WITH 6000;
INSERT INTO test_table (b) VALUES (700);
INSERT INTO test_table (b) VALUES (800);
INSERT INTO test_table (b) VALUES (900);
ROLLBACK;
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');
-- rollback on table with serial column
CREATE TABLE test_table (a SERIAL, b INT);
BEGIN;
INSERT INTO test_table (b) VALUES (100);
INSERT INTO test_table (b) VALUES (200);
INSERT INTO test_table (b) VALUES (300);
SELECT setval('test_table_a_seq', 3000);
INSERT INTO test_table (b) VALUES (400);
INSERT INTO test_table (b) VALUES (500);
INSERT INTO test_table (b) VALUES (600);
ALTER SEQUENCE test_table_a_seq RESTART WITH 6000;
INSERT INTO test_table (b) VALUES (700);
INSERT INTO test_table (b) VALUES (800);
INSERT INTO test_table (b) VALUES (900);
ROLLBACK;
-- check table and sequence values after rollback
SELECT * from test_table_a_seq;
SELECT nextval('test_table_a_seq');
DROP TABLE test_table;
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '0');
-- savepoint test on table with serial column
BEGIN;
CREATE TABLE test_table (a SERIAL, b INT);
INSERT INTO test_table (b) VALUES (100);
INSERT INTO test_table (b) VALUES (200);
SAVEPOINT a;
INSERT INTO test_table (b) VALUES (300);
ROLLBACK TO SAVEPOINT a;
DROP TABLE test_table;
COMMIT;
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '0');
-- savepoint test on table with serial column
BEGIN;
CREATE SEQUENCE test_sequence;
SELECT nextval('test_sequence');
SELECT setval('test_sequence', 3000);
SELECT nextval('test_sequence');
SAVEPOINT a;
ALTER SEQUENCE test_sequence START WITH 7000;
SELECT setval('test_sequence', 5000);
ROLLBACK TO SAVEPOINT a;
SELECT * FROM test_sequence;
DROP SEQUENCE test_sequence;
COMMIT;
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '0');
SELECT pg_drop_replication_slot('regression_slot');