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Fix logical replication slot initialization

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This was broken in commit 9c7d06d606, which inadvertently gave the
wrong value to fast_forward in one StartupDecodingContext call.  Fix by
flipping the value.  Add a test for the obvious error, namely trying to
initialize a replication slot with an nonexistent output plugin.

While at it, move the CreateDecodingContext call earlier, so that any
errors are reported before sending the CopyBoth message.

Author: Dave Cramer <davecramer@gmail.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/CADK3HHLVkeRe1v4P02-5hj55H3_yJg3AEtpXyEY5T3wuzO2jSg@mail.gmail.com
This commit is contained in:
Alvaro Herrera
2018-08-01 17:39:07 -04:00
parent 91bc213d90
commit c40489e449
4 changed files with 18 additions and 11 deletions
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2
contrib/test_decoding/sql/slot.sql
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@ -9,6 +9,8 @@ SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot_p', 'test
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot_t2', 'test_decoding', true);
SELECT pg_create_logical_replication_slot('foo', 'nonexistent');
-- here we want to start a new session and wait till old one is gone
select pg_backend_pid() as oldpid \gset
\c -