postgresql/contrib/test_decoding/expected/permissions.out
Robert Haas b89e151054 Introduce logical decoding.
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.
2014-03-03 16:32:18 -05:00

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-- predictability
SET synchronous_commit = on;
-- setup
CREATE ROLE lr_normal;
CREATE ROLE lr_superuser SUPERUSER;
CREATE ROLE lr_replication REPLICATION;
CREATE TABLE lr_test(data text);
-- superuser can control replication
SET ROLE lr_superuser;
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
?column?
----------
init
(1 row)
INSERT INTO lr_test VALUES('lr_superuser_init');
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0');
data
--------------------------------------------------------------
BEGIN
table public.lr_test: INSERT: data[text]:'lr_superuser_init'
COMMIT
(3 rows)
SELECT pg_drop_replication_slot('regression_slot');
pg_drop_replication_slot
--------------------------
(1 row)
RESET ROLE;
-- replication user can control replication
SET ROLE lr_replication;
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
?column?
----------
init
(1 row)
INSERT INTO lr_test VALUES('lr_superuser_init');
ERROR: permission denied for relation lr_test
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0');
data
------
(0 rows)
SELECT pg_drop_replication_slot('regression_slot');
pg_drop_replication_slot
--------------------------
(1 row)
RESET ROLE;
-- plain user *can't* can control replication
SET ROLE lr_normal;
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
ERROR: must be superuser or replication role to use replication slots
INSERT INTO lr_test VALUES('lr_superuser_init');
ERROR: permission denied for relation lr_test
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL, 'include-xids', '0');
ERROR: must be superuser or replication role to use replication slots
SELECT pg_drop_replication_slot('regression_slot');
ERROR: must be superuser or replication role to use replication slots
RESET ROLE;
-- replication users can drop superuser created slots
SET ROLE lr_superuser;
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
?column?
----------
init
(1 row)
RESET ROLE;
SET ROLE lr_replication;
SELECT pg_drop_replication_slot('regression_slot');
pg_drop_replication_slot
--------------------------
(1 row)
RESET ROLE;
-- normal users can't drop existing slots
SET ROLE lr_superuser;
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot', 'test_decoding');
?column?
----------
init
(1 row)
RESET ROLE;
SET ROLE lr_normal;
SELECT pg_drop_replication_slot('regression_slot');
ERROR: must be superuser or replication role to use replication slots
RESET ROLE;
-- all users can see existing slots
SET ROLE lr_superuser;
SELECT slot_name, plugin FROM pg_replication_slots;
slot_name | plugin
-----------------+---------------
regression_slot | test_decoding
(1 row)
RESET ROLE;
SET ROLE lr_replication;
SELECT slot_name, plugin FROM pg_replication_slots;
slot_name | plugin
-----------------+---------------
regression_slot | test_decoding
(1 row)
RESET ROLE;
SET ROLE lr_normal;
SELECT slot_name, plugin FROM pg_replication_slots;
slot_name | plugin
-----------------+---------------
regression_slot | test_decoding
(1 row)
RESET ROLE;
-- cleanup
SELECT pg_drop_replication_slot('regression_slot');
pg_drop_replication_slot
--------------------------
(1 row)
DROP ROLE lr_normal;
DROP ROLE lr_superuser;
DROP ROLE lr_replication;
DROP TABLE lr_test;