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b89e151054
This feature, building on previous commits, allows the write-ahead log stream to be decoded into a series of logical changes; that is, inserts, updates, and deletes and the transactions which contain them. It is capable of handling decoding even across changes to the schema of the effected tables. The output format is controlled by a so-called "output plugin"; an example is included. To make use of this in a real replication system, the output plugin will need to be modified to produce output in the format appropriate to that system, and to perform filtering. Currently, information can be extracted from the logical decoding system only via SQL; future commits will add the ability to stream changes via walsender. Andres Freund, with review and other contributions from many other people, including Álvaro Herrera, Abhijit Menon-Sen, Peter Gheogegan, Kevin Grittner, Robert Haas, Heikki Linnakangas, Fujii Masao, Abhijit Menon-Sen, Michael Paquier, Simon Riggs, Craig Ringer, and Steve Singer.
95 lines
6.7 KiB
Ruby
95 lines
6.7 KiB
Ruby
setup
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{
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DROP TABLE IF EXISTS tbl1;
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DROP TABLE IF EXISTS tbl2;
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CREATE TABLE tbl1(val1 integer, val2 integer);
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CREATE TABLE tbl2(val1 integer, val2 integer);
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}
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teardown
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{
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DROP TABLE tbl1;
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DROP TABLE tbl2;
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SELECT 'stop' FROM pg_drop_replication_slot('isolation_slot');
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}
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session "s1"
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step "s1_init" { SELECT 'init' FROM pg_create_logical_replication_slot('isolation_slot', 'test_decoding'); }
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step "s1_begin" { BEGIN; }
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step "s1_insert_tbl1" { INSERT INTO tbl1 (val1, val2) VALUES (1, 1); }
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step "s1_insert_tbl1_3col" { INSERT INTO tbl1 (val1, val2, val3) VALUES (1, 1, 1); }
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step "s1_insert_tbl2" { INSERT INTO tbl2 (val1, val2) VALUES (1, 1); }
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step "s1_insert_tbl2_3col" { INSERT INTO tbl2 (val1, val2, val3) VALUES (1, 1, 1); }
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step "s1_commit" { COMMIT; }
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session "s2"
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step "s2_alter_tbl1_float" { ALTER TABLE tbl1 ALTER COLUMN val2 TYPE float; }
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step "s2_alter_tbl1_char" { ALTER TABLE tbl1 ALTER COLUMN val2 TYPE character varying; }
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step "s2_alter_tbl1_text" { ALTER TABLE tbl1 ALTER COLUMN val2 TYPE text; }
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step "s2_alter_tbl1_boolean" { ALTER TABLE tbl1 ALTER COLUMN val2 TYPE boolean; }
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step "s2_alter_tbl1_add_int" { ALTER TABLE tbl1 ADD COLUMN val3 INTEGER; }
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step "s2_alter_tbl1_add_float" { ALTER TABLE tbl1 ADD COLUMN val3 FLOAT; }
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step "s2_alter_tbl1_add_char" { ALTER TABLE tbl1 ADD COLUMN val3 character varying; }
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step "s2_alter_tbl1_add_boolean" { ALTER TABLE tbl1 ADD COLUMN val3 BOOLEAN; }
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step "s2_alter_tbl1_add_text" { ALTER TABLE tbl1 ADD COLUMN val3 TEXT; }
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step "s2_alter_tbl2_float" { ALTER TABLE tbl2 ALTER COLUMN val2 TYPE float; }
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step "s2_alter_tbl2_char" { ALTER TABLE tbl2 ALTER COLUMN val2 TYPE character varying; }
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step "s2_alter_tbl2_text" { ALTER TABLE tbl2 ALTER COLUMN val2 TYPE text; }
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step "s2_alter_tbl2_boolean" { ALTER TABLE tbl2 ALTER COLUMN val2 TYPE boolean; }
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step "s2_alter_tbl2_text" { ALTER TABLE tbl2 ALTER COLUMN val2 TYPE boolean; }
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step "s2_alter_tbl2_add_int" { ALTER TABLE tbl2 ADD COLUMN val3 INTEGER; }
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step "s2_alter_tbl2_add_float" { ALTER TABLE tbl2 ADD COLUMN val3 FLOAT; }
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step "s2_alter_tbl2_add_char" { ALTER TABLE tbl2 ADD COLUMN val3 character varying; }
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step "s2_alter_tbl2_add_boolean" { ALTER TABLE tbl2 ADD COLUMN val3 BOOLEAN; }
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step "s2_alter_tbl2_add_text" { ALTER TABLE tbl2 ADD COLUMN val3 TEXT; }
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step "s2_alter_tbl2_drop_3rd_col" { ALTER TABLE tbl2 DROP COLUMN val3; }
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step "s2_alter_tbl2_3rd_char" { ALTER TABLE tbl2 ALTER COLUMN val3 TYPE character varying; }
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step "s2_alter_tbl2_3rd_text" { ALTER TABLE tbl2 ALTER COLUMN val3 TYPE text; }
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step "s2_alter_tbl2_3rd_int" { ALTER TABLE tbl2 ALTER COLUMN val3 TYPE int USING val3::integer; }
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step "s2_get_changes" { SELECT regexp_replace(data, 'temp_\d+', 'temp') AS data FROM pg_logical_slot_get_changes('isolation_slot', NULL, NULL, 'include-xids', '0'); }
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_float" "s1_insert_tbl2" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl1_float" "s1_insert_tbl2" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_char" "s1_insert_tbl2" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl1_char" "s1_insert_tbl2" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s1_insert_tbl2" "s2_alter_tbl1_float" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s1_insert_tbl2" "s2_alter_tbl1_char" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_float" "s1_insert_tbl2" "s2_alter_tbl1_float" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_char" "s1_insert_tbl2" "s2_alter_tbl1_char" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s2_alter_tbl2_char" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_text" "s1_insert_tbl2" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s2_alter_tbl2_char" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_text" "s1_insert_tbl2" "s2_alter_tbl1_char" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_boolean" "s1_insert_tbl2" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_boolean" "s1_insert_tbl2" "s2_alter_tbl1_boolean" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_add_int" "s1_insert_tbl2_3col" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s1_insert_tbl2" "s1_commit" "s1_begin" "s2_alter_tbl2_add_int" "s1_insert_tbl2_3col" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_add_float" "s1_insert_tbl2_3col" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s1_insert_tbl2" "s1_commit" "s1_begin" "s2_alter_tbl2_add_float" "s1_insert_tbl2_3col" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_add_char" "s1_insert_tbl2_3col" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s1_begin" "s1_insert_tbl1" "s1_insert_tbl2" "s1_commit" "s1_begin" "s2_alter_tbl2_add_char" "s1_insert_tbl2_3col" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s2_alter_tbl2_add_int" "s1_begin" "s1_insert_tbl2_3col" "s2_alter_tbl2_drop_3rd_col" "s1_commit" "s2_get_changes"
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permutation "s1_init" "s2_alter_tbl2_add_int" "s1_begin" "s1_insert_tbl2_3col" "s2_alter_tbl2_drop_3rd_col" "s1_insert_tbl2" "s1_commit" "s1_insert_tbl2" "s2_get_changes"
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permutation "s1_init" "s2_alter_tbl2_add_int" "s1_begin" "s1_insert_tbl2_3col" "s2_alter_tbl2_drop_3rd_col" "s1_commit" "s2_get_changes" "s2_alter_tbl2_add_text" "s1_begin" "s1_insert_tbl2_3col" "s2_alter_tbl2_3rd_char" "s1_insert_tbl2_3col" "s1_commit" "s2_get_changes" "s2_alter_tbl2_3rd_int" "s1_insert_tbl2_3col" "s2_get_changes"
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permutation "s1_init" "s2_alter_tbl2_add_char" "s1_begin" "s1_insert_tbl1" "s1_insert_tbl2_3col" "s2_alter_tbl2_3rd_text" "s1_insert_tbl2_3col" "s1_commit" "s1_insert_tbl2_3col" "s2_get_changes"
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permutation "s1_init" "s2_alter_tbl2_add_text" "s1_begin" "s1_insert_tbl1" "s1_insert_tbl2_3col" "s2_alter_tbl2_3rd_char" "s1_insert_tbl2_3col" "s1_commit" "s1_insert_tbl2_3col" "s2_get_changes"
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permutation "s1_init" "s2_alter_tbl2_add_char" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_3rd_text" "s1_insert_tbl2_3col" "s1_commit" "s2_alter_tbl2_drop_3rd_col" "s1_insert_tbl2" "s2_get_changes"
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permutation "s1_init" "s2_alter_tbl2_add_text" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_3rd_char" "s1_insert_tbl2_3col" "s1_commit" "s2_alter_tbl2_drop_3rd_col" "s1_insert_tbl2" "s2_get_changes"
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permutation "s1_init" "s2_alter_tbl2_add_char" "s1_begin" "s1_insert_tbl1" "s2_alter_tbl2_drop_3rd_col" "s1_insert_tbl1" "s1_commit" "s2_get_changes"
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