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| 1 | +# Testing of commit timestamps preservation across clean restarts |
| 2 | +use strict; |
| 3 | +use warnings; |
| 4 | +use PostgresNode; |
| 5 | +use TestLib; |
| 6 | +use Test::More tests => 16; |
| 7 | + |
| 8 | +my $node_master = get_new_node('master'); |
| 9 | +$node_master->init(allows_streaming => 1); |
| 10 | +$node_master->append_conf( |
| 11 | + 'postgresql.conf', qq( |
| 12 | +track_commit_timestamp = on |
| 13 | +)); |
| 14 | +$node_master->start; |
| 15 | + |
| 16 | +my ($ret, $stdout, $stderr); |
| 17 | + |
| 18 | +($ret, $stdout, $stderr) = |
| 19 | + $node_master->psql('postgres', qq[SELECT pg_xact_commit_timestamp('0');]); |
| 20 | +is($ret, 3, 'getting ts of InvalidTransactionId reports error'); |
| 21 | +like( |
| 22 | + $stderr, |
| 23 | + qr/cannot retrieve commit timestamp for transaction/, |
| 24 | + 'expected error from InvalidTransactionId'); |
| 25 | + |
| 26 | +($ret, $stdout, $stderr) = |
| 27 | + $node_master->psql('postgres', qq[SELECT pg_xact_commit_timestamp('1');]); |
| 28 | +is($ret, 3, 'getting ts of BootstrapTransactionId reports error'); |
| 29 | +like( |
| 30 | + $stderr, |
| 31 | + qr/cannot retrieve commit timestamp for transaction/, |
| 32 | + 'expected error from BootstrapTransactionId'); |
| 33 | + |
| 34 | +($ret, $stdout, $stderr) = |
| 35 | + $node_master->psql('postgres', qq[SELECT pg_xact_commit_timestamp('2');]); |
| 36 | +is($ret, 3, 'getting ts of FrozenTransactionId reports error'); |
| 37 | +like( |
| 38 | + $stderr, |
| 39 | + qr/cannot retrieve commit timestamp for transaction/, |
| 40 | + 'expected error from FrozenTransactionId'); |
| 41 | + |
| 42 | +# Since FirstNormalTransactionId will've occurred during initdb, long before we |
| 43 | +# enabled commit timestamps, it'll be null since we have no cts data for it but |
| 44 | +# cts are enabled. |
| 45 | +is( $node_master->safe_psql( |
| 46 | + 'postgres', qq[SELECT pg_xact_commit_timestamp('3');]), |
| 47 | + '', |
| 48 | + 'committs for FirstNormalTransactionId is null'); |
| 49 | + |
| 50 | +$node_master->safe_psql('postgres', |
| 51 | + qq[CREATE TABLE committs_test(x integer, y timestamp with time zone);]); |
| 52 | + |
| 53 | +my $xid = $node_master->safe_psql( |
| 54 | + 'postgres', qq[ |
| 55 | + BEGIN; |
| 56 | + INSERT INTO committs_test(x, y) VALUES (1, current_timestamp); |
| 57 | + SELECT txid_current(); |
| 58 | + COMMIT; |
| 59 | +]); |
| 60 | + |
| 61 | +my $before_restart_ts = $node_master->safe_psql('postgres', |
| 62 | + qq[SELECT pg_xact_commit_timestamp('$xid');]); |
| 63 | +ok($before_restart_ts != '' && $before_restart_ts != 'null', |
| 64 | + 'commit timestamp recorded'); |
| 65 | + |
| 66 | +$node_master->stop('immediate'); |
| 67 | +$node_master->start; |
| 68 | + |
| 69 | +my $after_crash_ts = $node_master->safe_psql('postgres', |
| 70 | + qq[SELECT pg_xact_commit_timestamp('$xid');]); |
| 71 | +is($after_crash_ts, $before_restart_ts, |
| 72 | + 'timestamps before and after crash are equal'); |
| 73 | + |
| 74 | +$node_master->stop('fast'); |
| 75 | +$node_master->start; |
| 76 | + |
| 77 | +my $after_restart_ts = $node_master->safe_psql('postgres', |
| 78 | + qq[SELECT pg_xact_commit_timestamp('$xid');]); |
| 79 | +is($after_restart_ts, $before_restart_ts, |
| 80 | + 'timestamps before and after restart are equal'); |
| 81 | + |
| 82 | +# Now disable commit timestamps |
| 83 | + |
| 84 | +$node_master->append_conf( |
| 85 | + 'postgresql.conf', qq( |
| 86 | +track_commit_timestamp = off |
| 87 | +)); |
| 88 | + |
| 89 | +$node_master->stop('fast'); |
| 90 | +$node_master->start; |
| 91 | + |
| 92 | +($ret, $stdout, $stderr) = $node_master->psql('postgres', |
| 93 | + qq[SELECT pg_xact_commit_timestamp('$xid');]); |
| 94 | +is($ret, 3, 'no commit timestamp from enable tx when cts disabled'); |
| 95 | +like( |
| 96 | + $stderr, |
| 97 | + qr/could not get commit timestamp data/, |
| 98 | + 'expected error from enabled tx when committs disabled'); |
| 99 | + |
| 100 | +# Do a tx while cts disabled |
| 101 | +my $xid_disabled = $node_master->safe_psql( |
| 102 | + 'postgres', qq[ |
| 103 | + BEGIN; |
| 104 | + INSERT INTO committs_test(x, y) VALUES (2, current_timestamp); |
| 105 | + SELECT txid_current(); |
| 106 | + COMMIT; |
| 107 | +]); |
| 108 | + |
| 109 | +# Should be inaccessible |
| 110 | +($ret, $stdout, $stderr) = $node_master->psql('postgres', |
| 111 | + qq[SELECT pg_xact_commit_timestamp('$xid_disabled');]); |
| 112 | +is($ret, 3, 'no commit timestamp when disabled'); |
| 113 | +like( |
| 114 | + $stderr, |
| 115 | + qr/could not get commit timestamp data/, |
| 116 | + 'expected error from disabled tx when committs disabled'); |
| 117 | + |
| 118 | +# Re-enable, restart and ensure we can still get the old timestamps |
| 119 | +$node_master->append_conf( |
| 120 | + 'postgresql.conf', qq( |
| 121 | +track_commit_timestamp = on |
| 122 | +)); |
| 123 | + |
| 124 | +$node_master->stop('fast'); |
| 125 | +$node_master->start; |
| 126 | + |
| 127 | + |
| 128 | +my $after_enable_ts = $node_master->safe_psql('postgres', |
| 129 | + qq[SELECT pg_xact_commit_timestamp('$xid');]); |
| 130 | +is($after_enable_ts, '', 'timestamp of enabled tx null after re-enable'); |
| 131 | + |
| 132 | +my $after_enable_disabled_ts = $node_master->safe_psql('postgres', |
| 133 | + qq[SELECT pg_xact_commit_timestamp('$xid_disabled');]); |
| 134 | +is($after_enable_disabled_ts, '', |
| 135 | + 'timestamp of disabled tx null after re-enable'); |
| 136 | + |
| 137 | +$node_master->stop; |
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