#!/usr/bin/perl

use strict;

use warnings;

use Test::More tests => 222;

use FindBin qw($Bin);

use lib "$Bin/lib";

use MemcachedTest;

my $server = new_memcached('-m 32 -o no_modern');

{

    my $stats = mem_stats($server->sock, ' settings');

    is($stats->{lru_crawler}, "no");

}

my $sock = $server->sock;

# Fill a slab a bit.

# Some immortal items, some long expiring items, some short expiring items.

# Done so the immortals end up at the tail.

for (1 .. 30) {

    print $sock "set ifoo$_ 0 0 2\r\nok\r\n";

    is(scalar <$sock>, "STORED\r\n", "stored key");

}

for (1 .. 30) {

    print $sock "set lfoo$_ 0 3600 2\r\nok\r\n";

    is(scalar <$sock>, "STORED\r\n", "stored key");

}

for (1 .. 30) {

    print $sock "set sfoo$_ 0 1 2\r\nok\r\n";

    is(scalar <$sock>, "STORED\r\n", "stored key");

}

{

    my $slabs = mem_stats($sock, "slabs");

    is($slabs->{"1:used_chunks"}, 90, "slab1 has 90 used chunks");

}

sleep 3;

print $sock "lru_crawler enable\r\n";

is(scalar <$sock>, "OK\r\n", "enabled lru crawler");

{

    my $stats = mem_stats($server->sock, ' settings');

    is($stats->{lru_crawler}, "yes");

}

print $sock "lru_crawler crawl 1\r\n";

is(scalar <$sock>, "OK\r\n", "kicked lru crawler");

while (1) {

    my $stats = mem_stats($sock);

    last unless $stats->{lru_crawler_running};

    sleep 1;

}

{

    my $slabs = mem_stats($sock, "slabs");

    is($slabs->{"1:used_chunks"}, 60, "slab1 now has 60 used chunks");

    my $items = mem_stats($sock, "items");

    is($items->{"items:1:crawler_reclaimed"}, 30, "slab1 has 30 reclaims");

}

# Check that crawler metadump works correctly.

{

    print $sock "lru_crawler metadump all\r\n";

    my $count = 0;

    while (<$sock>) {

        last if /^(\.|END)/;

        /^(key=) (\S+).*([^\r\n]+)/;

        $count++;

    }

    is ($count, 60);

}

for (1 .. 30) {

    mem_get_is($sock, "ifoo$_", "ok");

    mem_get_is($sock, "lfoo$_", "ok");

    mem_get_is($sock, "sfoo$_", undef);

}

print $sock "lru_crawler disable\r\n";

is(scalar <$sock>, "OK\r\n", "disabled lru crawler");

{

    my $stats = mem_stats($server->sock, ' settings');

    is($stats->{lru_crawler}, "no");

}

$server->stop;

# Test initializing crawler from starttime.

$server = new_memcached('-m 32 -o no_modern,lru_crawler');

$sock = $server->sock;

for (1 .. 30) {

    print $sock "set sfoo$_ 0 1 2\r\nok\r\n";

    is(scalar <$sock>, "STORED\r\n", "stored key");

}

sleep 3;

print $sock "lru_crawler crawl 1\r\n";

is(scalar <$sock>, "OK\r\n", "kicked lru crawler");

while (1) {

    my $stats = mem_stats($sock);

    last unless $stats->{lru_crawler_running};

    sleep 1;

}

{

    my $slabs = mem_stats($sock, "slabs");

    is($slabs->{"1:used_chunks"}, 0, "slab1 now has 0 used chunks");

}