Example #1
0
 /**
  * Look for any workers which should be running on this server and if
  * they're not, remove them from Redis.
  *
  * 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.
  */
 public function cleanup()
 {
     $workers = self::allWorkers();
     $hosts = $this->redis->smembers(Host::redisKey());
     $cleaned = array();
     foreach ($workers as $worker) {
         list($host, $pid) = explode(':', (string) $worker, 2);
         if ($host != (string) $this->host and in_array($host, $hosts) or $host == (string) $this->host and posix_kill((int) $pid, 0)) {
             continue;
         }
         $this->log('Pruning dead worker: ' . $worker, Logger::DEBUG);
         $worker->unregister();
         $cleaned[] = (string) $worker;
     }
     $workerIds = array_map(function ($w) {
         return (string) $w;
     }, $workers);
     $keys = (array) $this->redis->keys('worker:' . $this->host . ':*');
     foreach ($keys as $key) {
         $key = $this->redis->removeNamespace($key);
         $id = substr($key, strlen('worker:'));
         if (!in_array($id, $workerIds)) {
             if ($this->redis->ttl($key) < 0) {
                 $this->log('Expiring worker data: ' . $key, Logger::DEBUG);
                 $this->redis->expire($key, \Resque::getConfig('default.expiry_time', \Resque::DEFAULT_EXPIRY_TIME));
             }
         }
     }
     Event::fire(Event::WORKER_CLEANUP, array($this, $cleaned));
     return $cleaned;
 }