Scalr\System\Zmq\Cron\AbstractTask::run PHP Метод

    public function run()
    {
        $config = $this->config();
        $payloadClass = $this->payloadClass;
        if (!$config || !$config->enabled) {
            //This task has not been enabled to run
            return;
        }
        //Preparing task queue
        $this->queue = $this->enqueue();
        $this->getScalrService()->numTasks = count($this->queue);
        //Checking whether queue returns negotiated object type
        if (!$this->queue instanceof ArrayObject) {
            throw new TaskException(sprintf("%s::enqueue() should return ArrayObject.", get_class($this)));
        }
        if (!$config->daemon && $config->workers <= 1) {
            $this->getScalrService()->update(['numTasks']);
            //As the number of workers is one, we may process task queue in the same process
            foreach ($this->queue as $request) {
                /* @var $payload \Scalr\System\Zmq\Cron\AbstractPayload */
                $payload = (new $payloadClass())->setId();
                try {
                    $payload->setBody($this->worker($request));
                    $payload->code = 200;
                } catch (Exception $e) {
                    $this->getLogger()->error("Worker %s failed with exeption:%s - %s", $this->getName(), get_class($e), $e->getMessage());
                    $payload = $payload->error(500, $e->getMessage());
                }
                $this->onResponse($payload);
                unset($payload);
            }
            $this->onCompleted();
        } else {
            //Processing task queue with ZMQ MDP
            //If queue is empty nothing to do
            if (!$config->daemon && $this->queue->count() == 0) {
                $this->getScalrService()->update(['numTasks']);
                return;
            }
            try {
                $numberWorkers = $this->launchWorkers();
                $this->getScalrService()->update(['numTasks', 'numWorkers' => $numberWorkers]);
                $this->launchClient();
            } catch (Exception $e) {
                // Kills all workers
                $this->shutdown();
                throw $e;
            }
        }
    }