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# Copyright (c) 2021-2025, PostgreSQL Global Development Group
use strict;
use warnings FATAL => 'all';
use PostgreSQL::Test::Cluster;
use PostgreSQL::Test::Utils;
use Test::More;
my $node = PostgreSQL::Test::Cluster->new('main');
$node->init;
$node->append_conf(
'postgresql.conf',
qq{shared_preload_libraries = 'pg_prewarm'
pg_prewarm.autoprewarm = true
pg_prewarm.autoprewarm_interval = 0});
$node->start;
# setup
$node->safe_psql("postgres",
"CREATE EXTENSION pg_prewarm;\n"
. "CREATE TABLE test(c1 int);\n"
. "INSERT INTO test SELECT generate_series(1, 100);\n"
. "CREATE INDEX test_idx ON test(c1);\n"
. "CREATE ROLE test_user LOGIN;");
# test read mode
my $result =
$node->safe_psql("postgres", "SELECT pg_prewarm('test', 'read');");
like($result, qr/^[1-9][0-9]*$/, 'read mode succeeded');
# test buffer_mode
$result =
$node->safe_psql("postgres", "SELECT pg_prewarm('test', 'buffer');");
like($result, qr/^[1-9][0-9]*$/, 'buffer mode succeeded');
# prefetch mode might or might not be available
my ($cmdret, $stdout, $stderr) =
$node->psql("postgres", "SELECT pg_prewarm('test', 'prefetch');");
ok( ( $stdout =~ qr/^[1-9][0-9]*$/
or $stderr =~ qr/prefetch is not supported by this build/),
'prefetch mode succeeded');
# test_user should be unable to prewarm table/index without privileges
($cmdret, $stdout, $stderr) =
$node->psql(
"postgres", "SELECT pg_prewarm('test');",
extra_params => [ '--username' => 'test_user' ]);
ok($stderr =~ /permission denied for table test/, 'pg_prewarm failed as expected');
($cmdret, $stdout, $stderr) =
$node->psql(
"postgres", "SELECT pg_prewarm('test_idx');",
extra_params => [ '--username' => 'test_user' ]);
ok($stderr =~ /permission denied for index test_idx/, 'pg_prewarm failed as expected');
# test_user should be able to prewarm table/index with privileges
$node->safe_psql("postgres", "GRANT SELECT ON test TO test_user;");
$result =
$node->safe_psql(
"postgres", "SELECT pg_prewarm('test');",
extra_params => [ '--username' => 'test_user' ]);
like($result, qr/^[1-9][0-9]*$/, 'pg_prewarm succeeded as expected');
$result =
$node->safe_psql(
"postgres", "SELECT pg_prewarm('test_idx');",
extra_params => [ '--username' => 'test_user' ]);
like($result, qr/^[1-9][0-9]*$/, 'pg_prewarm succeeded as expected');
# test autoprewarm_dump_now()
$result = $node->safe_psql("postgres", "SELECT autoprewarm_dump_now();");
like($result, qr/^[1-9][0-9]*$/, 'autoprewarm_dump_now succeeded');
# restart, to verify that auto prewarm actually works
$node->restart;
$node->wait_for_log(
"autoprewarm successfully prewarmed [1-9][0-9]* of [0-9]+ previously-loaded blocks"
);
$node->stop;
# control file should indicate normal shut down
command_like(
[ 'pg_controldata', $node->data_dir() ],
qr/Database cluster state:\s*shut down/,
'cluster shut down normally');
done_testing();
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