interface QueueWorkerInterface in Drupal 8

Defines an interface for a QueueWorker plugin.

Hierarchy

• interface \Drupal\Component\Plugin\PluginInspectionInterface
  • interface \Drupal\Core\Queue\QueueWorkerInterface

See also

\Drupal\Core\Queue\QueueWorkerBase

\Drupal\Core\Queue\QueueWorkerManager

\Drupal\Core\Annotation\QueueWorker

Plugin API

File

core/lib/Drupal/Core/Queue/QueueWorkerInterface.php, line 15

Namespace

Drupal\Core\Queue

interface QueueWorkerInterface extends PluginInspectionInterface {

  /**
   * Works on a single queue item.
   *
   * @param mixed $data
   *   The data that was passed to
   *   \Drupal\Core\Queue\QueueInterface::createItem() when the item was queued.
   *
   * @throws \Drupal\Core\Queue\RequeueException
   *   Processing is not yet finished. This will allow another process to claim
   *   the item immediately.
   * @throws \Exception
   *   A QueueWorker plugin may throw an exception to indicate there was a
   *   problem. The cron process will log the exception, and leave the item in
   *   the queue to be processed again later.
   * @throws \Drupal\Core\Queue\SuspendQueueException
   *   More specifically, a SuspendQueueException should be thrown when a
   *   QueueWorker plugin is aware that the problem will affect all subsequent
   *   workers of its queue. For example, a callback that makes HTTP requests
   *   may find that the remote server is not responding. The cron process will
   *   behave as with a normal Exception, and in addition will not attempt to
   *   process further items from the current item's queue during the current
   *   cron run.
   *
   * @see \Drupal\Core\Cron::processQueues()
   */
  public function processItem($data);

}

Members

Name	Modifiers	Type	Description	Overrides
PluginInspectionInterface::getPluginDefinition	public	function	Gets the definition of the plugin implementation.	4
PluginInspectionInterface::getPluginId	public	function	Gets the plugin_id of the plugin instance.	2
QueueWorkerInterface::processItem	public	function	Works on a single queue item.	6