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# Copyright (c) 2021-2023, PostgreSQL Global Development Group
# Test streaming of transaction with subtransactions, DDLs, DMLs, and
# rollbacks
#
# This file is mainly to test the DDL/DML interaction of the publisher side,
# so we didn't add a parallel apply version for the tests in this file.
use strict;
use warnings;
use PostgreSQL::Test::Cluster;
use PostgreSQL::Test::Utils;
use Test::More;
# Create publisher node
my $node_publisher = PostgreSQL::Test::Cluster->new('publisher');
$node_publisher->init(allows_streaming => 'logical');
$node_publisher->append_conf('postgresql.conf',
'logical_replication_mode = immediate');
$node_publisher->start;
# Create subscriber node
my $node_subscriber = PostgreSQL::Test::Cluster->new('subscriber');
$node_subscriber->init(allows_streaming => 'logical');
$node_subscriber->start;
# Create some preexisting content on publisher
$node_publisher->safe_psql('postgres',
"CREATE TABLE test_tab (a int primary key, b varchar)");
$node_publisher->safe_psql('postgres',
"INSERT INTO test_tab VALUES (1, 'foo'), (2, 'bar')");
# Setup structure on subscriber
$node_subscriber->safe_psql('postgres',
"CREATE TABLE test_tab (a int primary key, b text, c INT, d INT, e INT)");
# Setup logical replication
my $publisher_connstr = $node_publisher->connstr . ' dbname=postgres';
$node_publisher->safe_psql('postgres',
"CREATE PUBLICATION tap_pub FOR TABLE test_tab");
my $appname = 'tap_sub';
$node_subscriber->safe_psql('postgres',
"CREATE SUBSCRIPTION tap_sub CONNECTION '$publisher_connstr application_name=$appname' PUBLICATION tap_pub WITH (streaming = on)"
);
# Wait for initial table sync to finish
$node_subscriber->wait_for_subscription_sync($node_publisher, $appname);
my $result =
$node_subscriber->safe_psql('postgres',
"SELECT count(*), count(c) FROM test_tab");
is($result, qq(2|0), 'check initial data was copied to subscriber');
# streamed transaction with DDL, DML and ROLLBACKs
$node_publisher->safe_psql(
'postgres', q{
BEGIN;
INSERT INTO test_tab VALUES (3, md5(3::text));
ALTER TABLE test_tab ADD COLUMN c INT;
SAVEPOINT s1;
INSERT INTO test_tab VALUES (4, md5(4::text), -4);
ALTER TABLE test_tab ADD COLUMN d INT;
SAVEPOINT s2;
INSERT INTO test_tab VALUES (5, md5(5::text), -5, 5*2);
ALTER TABLE test_tab ADD COLUMN e INT;
SAVEPOINT s3;
INSERT INTO test_tab VALUES (6, md5(6::text), -6, 6*2, -6*3);
ALTER TABLE test_tab DROP COLUMN c;
ROLLBACK TO s1;
INSERT INTO test_tab VALUES (4, md5(4::text), 4);
COMMIT;
});
$node_publisher->wait_for_catchup($appname);
$result =
$node_subscriber->safe_psql('postgres',
"SELECT count(*), count(c) FROM test_tab");
is($result, qq(4|1),
'check rollback to savepoint was reflected on subscriber and extra columns contain local defaults'
);
$node_subscriber->stop;
$node_publisher->stop;
done_testing();
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