/**
* Look for any jobs which are running but the worker is dead.
* Meaning that they are also not running but left in limbo
*
* This is a form of garbage collection to handle cases where the
* server may have been killed and the workers did not die gracefully
* and therefore leave state information in Redis.
*
* @param array $queues list of queues to check
*/
public static function cleanup(array $queues = array('*'))
{
$cleaned = array('zombie' => 0, 'processed' => 0);
$redis = Redis::instance();
if (in_array('*', $queues)) {
$queues = (array) $redis->smembers(Queue::redisKey());
sort($queues);
}
$workers = $redis->smembers(Worker::redisKey());
foreach ($queues as $queue) {
$jobs = $redis->zrangebyscore(Queue::redisKey($queue, 'running'), 0, time());
foreach ($jobs as $payload) {
$job = self::loadPayload($queue, $payload);
$packet = $job->getPacket();
if (!in_array($packet['worker'], $workers)) {
$job->fail(new Exception\Zombie());
$cleaned['zombie']++;
}
}
$cleaned['processed'] = $redis->zremrangebyscore(Queue::redisKey($queue, 'processed'), 0, time() - \Resque::getConfig('default.expiry_time', \Resque::DEFAULT_EXPIRY_TIME));
}
return $cleaned;
}
/**
* Cleans up any dead hosts
*
* @return array List of cleaned hosts
*/
public function cleanup()
{
$hosts = $this->redis->smembers(self::redisKey());
$workers = $this->redis->smembers(Worker::redisKey());
$cleaned = array('hosts' => array(), 'workers' => array());
foreach ($hosts as $hostname) {
$host = new static($hostname);
if (!$this->redis->exists(self::redisKey($host))) {
$this->redis->srem(self::redisKey(), (string) $host);
$cleaned['hosts'][] = (string) $host;
} else {
$host_workers = $this->redis->smembers(self::redisKey($host));
foreach ($host_workers as $host_worker) {
if (!in_array($host_worker, $workers)) {
$cleaned['workers'][] = $host_worker;
$this->redis->srem(self::redisKey($host), $host_worker);
}
}
}
}
return $cleaned;
}
