protected function Cron::processQueues in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Cron.php \Drupal\Core\Cron::processQueues()
2. 10 core/lib/Drupal/Core/Cron.php \Drupal\Core\Cron::processQueues()

Processes cron queues.

1 call to Cron::processQueues()

Cron::run in core/lib/Drupal/Core/Cron.php

Executes a cron run.

File

core/lib/Drupal/Core/Cron.php, line 166

Class

Cron

The Drupal core Cron service.

Namespace

Drupal\Core

Code

protected function processQueues() {

  // Grab the defined cron queues.
  foreach ($this->queueManager
    ->getDefinitions() as $queue_name => $info) {
    if (isset($info['cron'])) {

      // Make sure every queue exists. There is no harm in trying to recreate
      // an existing queue.
      $this->queueFactory
        ->get($queue_name)
        ->createQueue();
      $queue_worker = $this->queueManager
        ->createInstance($queue_name);
      $end = time() + (isset($info['cron']['time']) ? $info['cron']['time'] : 15);
      $queue = $this->queueFactory
        ->get($queue_name);
      $lease_time = isset($info['cron']['time']) ?: NULL;
      while (time() < $end && ($item = $queue
        ->claimItem($lease_time))) {
        try {
          $queue_worker
            ->processItem($item->data);
          $queue
            ->deleteItem($item);
        } catch (RequeueException $e) {

          // The worker requested the task be immediately requeued.
          $queue
            ->releaseItem($item);
        } catch (SuspendQueueException $e) {

          // If the worker indicates there is a problem with the whole queue,
          // release the item and skip to the next queue.
          $queue
            ->releaseItem($item);
          watchdog_exception('cron', $e);

          // Skip to the next queue.
          continue 2;
        } catch (\Exception $e) {

          // In case of any other kind of exception, log it and leave the item
          // in the queue to be processed again later.
          watchdog_exception('cron', $e);
        }
      }
    }
  }
}