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366283961a
This patch adds a new SUBSCRIPTION parameter "origin". It specifies whether the subscription will request the publisher to only send changes that don't have an origin or send changes regardless of origin. Setting it to "none" means that the subscription will request the publisher to only send changes that have no origin associated. Setting it to "any" means that the publisher sends changes regardless of their origin. The default is "any". Usage: CREATE SUBSCRIPTION sub1 CONNECTION 'dbname=postgres port=9999' PUBLICATION pub1 WITH (origin = none); This can be used to avoid loops (infinite replication of the same data) among replication nodes. This feature allows filtering only the replication data originating from WAL but for initial sync (initial copy of table data) we don't have such a facility as we can only distinguish the data based on origin from WAL. As a follow-up patch, we are planning to forbid the initial sync if the origin is specified as none and we notice that the publication tables were also replicated from other publishers to avoid duplicate data or loops. We forbid to allow creating origin with names 'none' and 'any' to avoid confusion with the same name options. Author: Vignesh C, Amit Kapila Reviewed-By: Peter Smith, Amit Kapila, Dilip Kumar, Shi yu, Ashutosh Bapat, Hayato Kuroda Discussion: https://postgr.es/m/CALDaNm0gwjY_4HFxvvty01BOT01q_fJLKQ3pWP9=9orqubhjcQ@mail.gmail.com
270 lines
9.8 KiB
PL/PgSQL
270 lines
9.8 KiB
PL/PgSQL
--
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-- SUBSCRIPTION
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--
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CREATE ROLE regress_subscription_user LOGIN SUPERUSER;
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CREATE ROLE regress_subscription_user2;
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CREATE ROLE regress_subscription_user_dummy LOGIN NOSUPERUSER;
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SET SESSION AUTHORIZATION 'regress_subscription_user';
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-- fail - no publications
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'foo';
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-- fail - no connection
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CREATE SUBSCRIPTION regress_testsub PUBLICATION foo;
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-- fail - cannot do CREATE SUBSCRIPTION CREATE SLOT inside transaction block
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BEGIN;
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'testconn' PUBLICATION testpub WITH (create_slot);
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COMMIT;
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-- fail - invalid connection string
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'testconn' PUBLICATION testpub;
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-- fail - duplicate publications
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist' PUBLICATION foo, testpub, foo WITH (connect = false);
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-- ok
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false);
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COMMENT ON SUBSCRIPTION regress_testsub IS 'test subscription';
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SELECT obj_description(s.oid, 'pg_subscription') FROM pg_subscription s;
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-- fail - name already exists
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false);
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-- fail - must be superuser
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SET SESSION AUTHORIZATION 'regress_subscription_user2';
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CREATE SUBSCRIPTION regress_testsub2 CONNECTION 'dbname=regress_doesnotexist' PUBLICATION foo WITH (connect = false);
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SET SESSION AUTHORIZATION 'regress_subscription_user';
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-- fail - invalid option combinations
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CREATE SUBSCRIPTION regress_testsub2 CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false, copy_data = true);
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CREATE SUBSCRIPTION regress_testsub2 CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false, enabled = true);
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CREATE SUBSCRIPTION regress_testsub2 CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false, create_slot = true);
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CREATE SUBSCRIPTION regress_testsub2 CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (slot_name = NONE, enabled = true);
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CREATE SUBSCRIPTION regress_testsub2 CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (slot_name = NONE, enabled = false, create_slot = true);
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CREATE SUBSCRIPTION regress_testsub2 CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (slot_name = NONE);
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CREATE SUBSCRIPTION regress_testsub2 CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (slot_name = NONE, enabled = false);
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CREATE SUBSCRIPTION regress_testsub2 CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (slot_name = NONE, create_slot = false);
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-- ok - with slot_name = NONE
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CREATE SUBSCRIPTION regress_testsub3 CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (slot_name = NONE, connect = false);
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-- fail
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ALTER SUBSCRIPTION regress_testsub3 ENABLE;
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ALTER SUBSCRIPTION regress_testsub3 REFRESH PUBLICATION;
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-- fail - origin must be either none or any
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CREATE SUBSCRIPTION regress_testsub4 CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (slot_name = NONE, connect = false, origin = foo);
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-- now it works
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CREATE SUBSCRIPTION regress_testsub4 CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (slot_name = NONE, connect = false, origin = none);
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\dRs+ regress_testsub4
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ALTER SUBSCRIPTION regress_testsub4 SET (origin = any);
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\dRs+ regress_testsub4
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DROP SUBSCRIPTION regress_testsub3;
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DROP SUBSCRIPTION regress_testsub4;
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-- fail - invalid connection string
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ALTER SUBSCRIPTION regress_testsub CONNECTION 'foobar';
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\dRs+
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ALTER SUBSCRIPTION regress_testsub SET PUBLICATION testpub2, testpub3 WITH (refresh = false);
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ALTER SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist2';
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ALTER SUBSCRIPTION regress_testsub SET (slot_name = 'newname');
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-- fail
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ALTER SUBSCRIPTION regress_testsub SET (slot_name = '');
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-- fail
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ALTER SUBSCRIPTION regress_doesnotexist CONNECTION 'dbname=regress_doesnotexist2';
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ALTER SUBSCRIPTION regress_testsub SET (create_slot = false);
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-- ok
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ALTER SUBSCRIPTION regress_testsub SKIP (lsn = '0/12345');
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\dRs+
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-- ok - with lsn = NONE
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ALTER SUBSCRIPTION regress_testsub SKIP (lsn = NONE);
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-- fail
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ALTER SUBSCRIPTION regress_testsub SKIP (lsn = '0/0');
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\dRs+
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BEGIN;
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ALTER SUBSCRIPTION regress_testsub ENABLE;
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\dRs
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ALTER SUBSCRIPTION regress_testsub DISABLE;
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\dRs
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COMMIT;
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-- fail - must be owner of subscription
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SET ROLE regress_subscription_user_dummy;
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ALTER SUBSCRIPTION regress_testsub RENAME TO regress_testsub_dummy;
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RESET ROLE;
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ALTER SUBSCRIPTION regress_testsub RENAME TO regress_testsub_foo;
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ALTER SUBSCRIPTION regress_testsub_foo SET (synchronous_commit = local);
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ALTER SUBSCRIPTION regress_testsub_foo SET (synchronous_commit = foobar);
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\dRs+
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-- rename back to keep the rest simple
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ALTER SUBSCRIPTION regress_testsub_foo RENAME TO regress_testsub;
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-- fail - new owner must be superuser
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ALTER SUBSCRIPTION regress_testsub OWNER TO regress_subscription_user2;
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ALTER ROLE regress_subscription_user2 SUPERUSER;
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-- now it works
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ALTER SUBSCRIPTION regress_testsub OWNER TO regress_subscription_user2;
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-- fail - cannot do DROP SUBSCRIPTION inside transaction block with slot name
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BEGIN;
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DROP SUBSCRIPTION regress_testsub;
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COMMIT;
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ALTER SUBSCRIPTION regress_testsub SET (slot_name = NONE);
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-- now it works
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BEGIN;
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DROP SUBSCRIPTION regress_testsub;
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COMMIT;
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DROP SUBSCRIPTION IF EXISTS regress_testsub;
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DROP SUBSCRIPTION regress_testsub; -- fail
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-- fail - binary must be boolean
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false, binary = foo);
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-- now it works
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false, binary = true);
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\dRs+
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ALTER SUBSCRIPTION regress_testsub SET (binary = false);
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ALTER SUBSCRIPTION regress_testsub SET (slot_name = NONE);
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\dRs+
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DROP SUBSCRIPTION regress_testsub;
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-- fail - streaming must be boolean
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false, streaming = foo);
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-- now it works
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false, streaming = true);
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\dRs+
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ALTER SUBSCRIPTION regress_testsub SET (streaming = false);
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ALTER SUBSCRIPTION regress_testsub SET (slot_name = NONE);
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\dRs+
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-- fail - publication already exists
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ALTER SUBSCRIPTION regress_testsub ADD PUBLICATION testpub WITH (refresh = false);
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-- fail - publication used more than once
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ALTER SUBSCRIPTION regress_testsub ADD PUBLICATION testpub1, testpub1 WITH (refresh = false);
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-- ok - add two publications into subscription
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ALTER SUBSCRIPTION regress_testsub ADD PUBLICATION testpub1, testpub2 WITH (refresh = false);
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-- fail - publications already exist
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ALTER SUBSCRIPTION regress_testsub ADD PUBLICATION testpub1, testpub2 WITH (refresh = false);
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\dRs+
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-- fail - publication used more then once
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ALTER SUBSCRIPTION regress_testsub DROP PUBLICATION testpub1, testpub1 WITH (refresh = false);
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-- fail - all publications are deleted
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ALTER SUBSCRIPTION regress_testsub DROP PUBLICATION testpub, testpub1, testpub2 WITH (refresh = false);
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-- fail - publication does not exist in subscription
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ALTER SUBSCRIPTION regress_testsub DROP PUBLICATION testpub3 WITH (refresh = false);
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-- ok - delete publications
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ALTER SUBSCRIPTION regress_testsub DROP PUBLICATION testpub1, testpub2 WITH (refresh = false);
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\dRs+
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DROP SUBSCRIPTION regress_testsub;
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist' PUBLICATION mypub
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WITH (connect = false, create_slot = false, copy_data = false);
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ALTER SUBSCRIPTION regress_testsub ENABLE;
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-- fail - ALTER SUBSCRIPTION with refresh is not allowed in a transaction
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-- block or function
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BEGIN;
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ALTER SUBSCRIPTION regress_testsub SET PUBLICATION mypub WITH (refresh = true);
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END;
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BEGIN;
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ALTER SUBSCRIPTION regress_testsub REFRESH PUBLICATION;
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END;
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CREATE FUNCTION func() RETURNS VOID AS
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$$ ALTER SUBSCRIPTION regress_testsub SET PUBLICATION mypub WITH (refresh = true) $$ LANGUAGE SQL;
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SELECT func();
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ALTER SUBSCRIPTION regress_testsub DISABLE;
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ALTER SUBSCRIPTION regress_testsub SET (slot_name = NONE);
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DROP SUBSCRIPTION regress_testsub;
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DROP FUNCTION func;
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-- fail - two_phase must be boolean
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false, two_phase = foo);
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-- now it works
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false, two_phase = true);
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\dRs+
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--fail - alter of two_phase option not supported.
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ALTER SUBSCRIPTION regress_testsub SET (two_phase = false);
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-- but can alter streaming when two_phase enabled
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ALTER SUBSCRIPTION regress_testsub SET (streaming = true);
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\dRs+
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ALTER SUBSCRIPTION regress_testsub SET (slot_name = NONE);
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DROP SUBSCRIPTION regress_testsub;
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-- two_phase and streaming are compatible.
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false, streaming = true, two_phase = true);
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\dRs+
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ALTER SUBSCRIPTION regress_testsub SET (slot_name = NONE);
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DROP SUBSCRIPTION regress_testsub;
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-- fail - disable_on_error must be boolean
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false, disable_on_error = foo);
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-- now it works
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CREATE SUBSCRIPTION regress_testsub CONNECTION 'dbname=regress_doesnotexist' PUBLICATION testpub WITH (connect = false, disable_on_error = false);
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\dRs+
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ALTER SUBSCRIPTION regress_testsub SET (disable_on_error = true);
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\dRs+
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ALTER SUBSCRIPTION regress_testsub SET (slot_name = NONE);
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DROP SUBSCRIPTION regress_testsub;
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RESET SESSION AUTHORIZATION;
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DROP ROLE regress_subscription_user;
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DROP ROLE regress_subscription_user2;
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DROP ROLE regress_subscription_user_dummy;
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