postgresql/src/test/recovery/t/040_standby_failover_slots_...

101 lines
3.4 KiB
Perl

# Copyright (c) 2024, PostgreSQL Global Development Group
use strict;
use warnings;
use PostgreSQL::Test::Cluster;
use PostgreSQL::Test::Utils;
use Test::More;
##################################################
# Test that when a subscription with failover enabled is created, it will alter
# the failover property of the corresponding slot on the publisher.
##################################################
# Create publisher
my $publisher = PostgreSQL::Test::Cluster->new('publisher');
$publisher->init(allows_streaming => 'logical');
$publisher->start;
$publisher->safe_psql('postgres',
"CREATE PUBLICATION regress_mypub FOR ALL TABLES;");
my $publisher_connstr = $publisher->connstr . ' dbname=postgres';
# Create a subscriber node, wait for sync to complete
my $subscriber1 = PostgreSQL::Test::Cluster->new('subscriber1');
$subscriber1->init;
$subscriber1->start;
# Create a slot on the publisher with failover disabled
$publisher->safe_psql('postgres',
"SELECT 'init' FROM pg_create_logical_replication_slot('lsub1_slot', 'pgoutput', false, false, false);"
);
# Confirm that the failover flag on the slot is turned off
is( $publisher->safe_psql(
'postgres',
q{SELECT failover from pg_replication_slots WHERE slot_name = 'lsub1_slot';}
),
"f",
'logical slot has failover false on the publisher');
# Create a subscription (using the same slot created above) that enables
# failover.
$subscriber1->safe_psql('postgres',
"CREATE SUBSCRIPTION regress_mysub1 CONNECTION '$publisher_connstr' PUBLICATION regress_mypub WITH (slot_name = lsub1_slot, copy_data=false, failover = true, create_slot = false, enabled = false);"
);
# Confirm that the failover flag on the slot has now been turned on
is( $publisher->safe_psql(
'postgres',
q{SELECT failover from pg_replication_slots WHERE slot_name = 'lsub1_slot';}
),
"t",
'logical slot has failover true on the publisher');
##################################################
# Test that changing the failover property of a subscription updates the
# corresponding failover property of the slot.
##################################################
# Disable failover
$subscriber1->safe_psql('postgres',
"ALTER SUBSCRIPTION regress_mysub1 SET (failover = false)");
# Confirm that the failover flag on the slot has now been turned off
is( $publisher->safe_psql(
'postgres',
q{SELECT failover from pg_replication_slots WHERE slot_name = 'lsub1_slot';}
),
"f",
'logical slot has failover false on the publisher');
# Enable failover
$subscriber1->safe_psql('postgres',
"ALTER SUBSCRIPTION regress_mysub1 SET (failover = true)");
# Confirm that the failover flag on the slot has now been turned on
is( $publisher->safe_psql(
'postgres',
q{SELECT failover from pg_replication_slots WHERE slot_name = 'lsub1_slot';}
),
"t",
'logical slot has failover true on the publisher');
##################################################
# Test that the failover option cannot be changed for enabled subscriptions.
##################################################
# Enable subscription
$subscriber1->safe_psql('postgres',
"ALTER SUBSCRIPTION regress_mysub1 ENABLE");
# Disable failover for enabled subscription
my ($result, $stdout, $stderr) = $subscriber1->psql('postgres',
"ALTER SUBSCRIPTION regress_mysub1 SET (failover = false)");
ok( $stderr =~ /ERROR: cannot set failover for enabled subscription/,
"altering failover is not allowed for enabled subscription");
done_testing();