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# Test for recovery targets: name, timestamp, XID
use strict;
use warnings;
use PostgresNode;
use TestLib;
use Test::More tests => 7;
# Create and test a standby from given backup, with a certain
# recovery target.
sub test_recovery_standby
{
my $test_name = shift;
my $node_name = shift;
my $node_master = shift;
my $recovery_params = shift;
my $num_rows = shift;
my $until_lsn = shift;
my $node_standby = get_new_node($node_name);
$node_standby->init_from_backup($node_master, 'my_backup',
has_restoring => 1);
foreach my $param_item (@$recovery_params)
{
$node_standby->append_conf(
'recovery.conf',
qq($param_item
));
}
$node_standby->start;
# Wait until standby has replayed enough data
my $caughtup_query =
"SELECT '$until_lsn'::pg_lsn <= pg_last_xlog_replay_location()";
$node_standby->poll_query_until('postgres', $caughtup_query)
or die "Timed out while waiting for standby to catch up";
# Create some content on master and check its presence in standby
my $result =
$node_standby->safe_psql('postgres', "SELECT count(*) FROM tab_int");
is($result, qq($num_rows), "check standby content for $test_name");
# Stop standby node
$node_standby->teardown_node;
}
# Initialize master node
my $node_master = get_new_node('master');
$node_master->init(has_archiving => 1, allows_streaming => 1);
# Start it
$node_master->start;
# Create data before taking the backup, aimed at testing
# recovery_target = 'immediate'
$node_master->safe_psql('postgres',
"CREATE TABLE tab_int AS SELECT generate_series(1,1000) AS a");
my $lsn1 =
$node_master->safe_psql('postgres', "SELECT pg_current_xlog_location();");
# Take backup from which all operations will be run
$node_master->backup('my_backup');
# Insert some data with used as a replay reference, with a recovery
# target TXID.
$node_master->safe_psql('postgres',
"INSERT INTO tab_int VALUES (generate_series(1001,2000))");
my $recovery_txid = $node_master->safe_psql('postgres', "SELECT txid_current()");
my $lsn2 =
$node_master->safe_psql('postgres', "SELECT pg_current_xlog_location();");
# More data, with recovery target timestamp
$node_master->safe_psql('postgres',
"INSERT INTO tab_int VALUES (generate_series(2001,3000))");
my $recovery_time = $node_master->safe_psql('postgres', "SELECT now()");
my $lsn3 =
$node_master->safe_psql('postgres', "SELECT pg_current_xlog_location();");
# Even more data, this time with a recovery target name
$node_master->safe_psql('postgres',
"INSERT INTO tab_int VALUES (generate_series(3001,4000))");
my $recovery_name = "my_target";
my $lsn4 =
$node_master->safe_psql('postgres', "SELECT pg_current_xlog_location();");
$node_master->safe_psql('postgres',
"SELECT pg_create_restore_point('$recovery_name');");
# Force archiving of WAL file
$node_master->safe_psql('postgres', "SELECT pg_switch_xlog()");
# Test recovery targets
my @recovery_params = ("recovery_target = 'immediate'");
test_recovery_standby('immediate target',
'standby_1', $node_master, \@recovery_params, "1000", $lsn1);
@recovery_params = ("recovery_target_xid = '$recovery_txid'");
test_recovery_standby('XID', 'standby_2', $node_master, \@recovery_params,
"2000", $lsn2);
@recovery_params = ("recovery_target_time = '$recovery_time'");
test_recovery_standby('Time', 'standby_3', $node_master, \@recovery_params,
"3000", $lsn3);
@recovery_params = ("recovery_target_name = '$recovery_name'");
test_recovery_standby('Name', 'standby_4', $node_master, \@recovery_params,
"4000", $lsn4);
# Multiple targets
# Last entry has priority (note that an array respects the order of items
# not hashes).
@recovery_params = (
"recovery_target_name = '$recovery_name'",
"recovery_target_xid = '$recovery_txid'",
"recovery_target_time = '$recovery_time'");
test_recovery_standby('Name + XID + Time',
'standby_5', $node_master, \@recovery_params, "3000", $lsn3);
@recovery_params = (
"recovery_target_time = '$recovery_time'",
"recovery_target_name = '$recovery_name'",
"recovery_target_xid = '$recovery_txid'");
test_recovery_standby('Time + Name + XID',
'standby_6', $node_master, \@recovery_params, "2000", $lsn2);
@recovery_params = (
"recovery_target_xid = '$recovery_txid'",
"recovery_target_time = '$recovery_time'",
"recovery_target_name = '$recovery_name'");
test_recovery_standby('XID + Time + Name',
'standby_7', $node_master, \@recovery_params, "4000", $lsn4);
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