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# Copyright (c) 2021-2022, PostgreSQL Global Development Group
# This test aims to verify that the client can decompress and extract
# a backup which was compressed by the server.
use strict;
use warnings;
use File::Path qw(rmtree);
use PostgreSQL::Test::Cluster;
use PostgreSQL::Test::Utils;
use Test::More;
my $primary = PostgreSQL::Test::Cluster->new('primary');
$primary->init(allows_streaming => 1);
$primary->start;
my @test_configuration = (
{
'compression_method' => 'none',
'backup_flags' => [],
'enabled' => 1
},
{
'compression_method' => 'gzip',
'backup_flags' => [ '--compress', 'server-gzip:5' ],
'enabled' => check_pg_config("#define HAVE_LIBZ 1")
},
{
'compression_method' => 'lz4',
'backup_flags' => [ '--compress', 'server-lz4:5' ],
'enabled' => check_pg_config("#define USE_LZ4 1")
},
{
'compression_method' => 'zstd',
'backup_flags' => [ '--compress', 'server-zstd:5' ],
'enabled' => check_pg_config("#define USE_ZSTD 1")
},
{
'compression_method' => 'parallel zstd',
'backup_flags' => [ '--compress', 'server-zstd:workers=3' ],
'enabled' => check_pg_config("#define USE_ZSTD 1"),
'possibly_unsupported' =>
qr/could not set compression worker count to 3: Unsupported parameter/
});
for my $tc (@test_configuration)
{
my $backup_path = $primary->backup_dir . '/' . 'extract_backup';
my $method = $tc->{'compression_method'};
SKIP:
{
skip "$method compression not supported by this build", 2
if !$tc->{'enabled'};
# Take backup with server compression enabled.
my @backup = (
'pg_basebackup', '-D', $backup_path,
'-Xfetch', '--no-sync', '-cfast', '-Fp');
push @backup, @{ $tc->{'backup_flags'} };
my @verify = ('pg_verifybackup', '-e', $backup_path);
# A backup with a valid compression method should work.
my $backup_stdout = '';
my $backup_stderr = '';
my $backup_result = $primary->run_log(\@backup, '>', \$backup_stdout,
'2>', \$backup_stderr);
if ($backup_stdout ne '')
{
print "# standard output was:\n$backup_stdout";
}
if ($backup_stderr ne '')
{
print "# standard error was:\n$backup_stderr";
}
if ( !$backup_result
&& $tc->{'possibly_unsupported'}
&& $backup_stderr =~ /$tc->{'possibly_unsupported'}/)
{
skip "compression with $method not supported by this build", 2;
}
else
{
ok($backup_result, "backup done, compression $method");
}
# Make sure that it verifies OK.
$primary->command_ok(\@verify,
"backup verified, compression method \"$method\"");
}
# Remove backup immediately to save disk space.
rmtree($backup_path);
}
done_testing();
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