1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
# Copyright (c) 2021-2022, PostgreSQL Global Development Group
# Test streaming of large transaction containing multiple subtransactions and rollbacks
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_decoding_work_mem = 64kB');
$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');
# large (streamed) transaction with DDL, DML and ROLLBACKs
$node_publisher->safe_psql(
'postgres', q{
BEGIN;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(3,500) s(i);
SAVEPOINT s1;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(501,1000) s(i);
SAVEPOINT s2;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(1001,1500) s(i);
SAVEPOINT s3;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(1501,2000) s(i);
ROLLBACK TO s2;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(2001,2500) s(i);
ROLLBACK TO s1;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(2501,3000) s(i);
SAVEPOINT s4;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(3001,3500) s(i);
SAVEPOINT s5;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(3501,4000) s(i);
COMMIT;
});
$node_publisher->wait_for_catchup($appname);
$result =
$node_subscriber->safe_psql('postgres',
"SELECT count(*), count(c) FROM test_tab");
is($result, qq(2000|0),
'check rollback to savepoint was reflected on subscriber and extra columns contain local defaults'
);
# large (streamed) transaction with subscriber receiving out of order
# subtransaction ROLLBACKs
$node_publisher->safe_psql(
'postgres', q{
BEGIN;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(4001,4500) s(i);
SAVEPOINT s1;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(5001,5500) s(i);
SAVEPOINT s2;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(6001,6500) s(i);
SAVEPOINT s3;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(7001,7500) s(i);
RELEASE s2;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(8001,8500) s(i);
ROLLBACK TO s1;
COMMIT;
});
$node_publisher->wait_for_catchup($appname);
$result =
$node_subscriber->safe_psql('postgres',
"SELECT count(*), count(c) FROM test_tab");
is($result, qq(2500|0),
'check rollback to savepoint was reflected on subscriber');
# large (streamed) transaction with subscriber receiving rollback
$node_publisher->safe_psql(
'postgres', q{
BEGIN;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(8501,9000) s(i);
SAVEPOINT s1;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(9001,9500) s(i);
SAVEPOINT s2;
INSERT INTO test_tab SELECT i, md5(i::text) FROM generate_series(9501,10000) s(i);
ROLLBACK;
});
$node_publisher->wait_for_catchup($appname);
$result =
$node_subscriber->safe_psql('postgres',
"SELECT count(*), count(c) FROM test_tab");
is($result, qq(2500|0), 'check rollback was reflected on subscriber');
$node_subscriber->stop;
$node_publisher->stop;
done_testing();
|
