class WorkbenchEmailProcessor in Workbench Email 8

Defines a class for processing a queue for a given entity ID.

Hierarchy

• class \Drupal\workbench_email\WorkbenchEmailProcessor

1 string reference to 'WorkbenchEmailProcessor'

workbench_email.services.yml in ./workbench_email.services.yml

workbench_email.services.yml

1 service uses WorkbenchEmailProcessor

workbench_email.processor in ./workbench_email.services.yml

Drupal\workbench_email\WorkbenchEmailProcessor

File

src/WorkbenchEmailProcessor.php, line 16

Namespace

Drupal\workbench_email

class WorkbenchEmailProcessor {

  /**
   * Time to process for.
   */
  const PROCESSING_TIME = 30;

  /**
   * The queue service.
   *
   * @var \Drupal\Core\Queue\QueueFactory
   */
  protected $queueFactory;

  /**
   * The queue plugin manager.
   *
   * @var \Drupal\Core\Queue\QueueWorkerManagerInterface
   */
  protected $queueManager;

  /**
   * Logger.
   *
   * @var \Drupal\Core\Logger\LoggerChannelInterface
   */
  protected $logger;

  /**
   * Constructs a WorkbencEmailProcessor object.
   *
   * @param \Drupal\Core\Queue\QueueFactory $queue_factory
   *   The queue service.
   * @param \Drupal\Core\Queue\QueueWorkerManagerInterface $queue_manager
   *   The queue plugin manager.
   * @param \Drupal\Core\Logger\LoggerChannelFactoryInterface $logger_factory
   *   Logger factory service.
   */
  public function __construct(QueueFactory $queue_factory, QueueWorkerManagerInterface $queue_manager, LoggerChannelFactoryInterface $logger_factory) {
    $this->queueFactory = $queue_factory;
    $this->queueManager = $queue_manager;
    $this->logger = $logger_factory
      ->get('workbench_email');
  }

  /**
   * Process the queue for a given entity.
   *
   * @param \Drupal\Core\Entity\EntityInterface $entity
   *   Entity to process.
   */
  public function processEntity(EntityInterface $entity) {

    // Make sure every queue exists. There is no harm in trying to recreate
    // an existing queue.
    $queue_name = 'workbench_email_send' . PluginBase::DERIVATIVE_SEPARATOR . $entity
      ->getEntityTypeId();
    $this->queueFactory
      ->get($queue_name)
      ->createQueue();
    $queue_worker = $this->queueManager
      ->createInstance($queue_name, [
      'entity_type' => $entity
        ->getEntityTypeId(),
    ]);
    $queue = $this->queueFactory
      ->get($queue_name);
    $to_release = [];
    $end = time() + static::PROCESSING_TIME;
    while (time() < $end && ($item = $queue
      ->claimItem())) {
      if ($item->data instanceof QueuedEmail) {

        // We populate and flush the queue in one request at present, so we
        // should only ever have matching items. However in theory we could
        // support sending in the background, in which case we are defensive
        // here in case there are items in the queue that don't match the entity
        // we're processing. Similarly, there may be an instance where two or
        // more entities are saved in the one request, and in that case there
        // would be more than one entity in the queue.
        if ($item->data
          ->getUuid() === $entity
          ->uuid()) {
          try {
            $queue_worker
              ->processItem($item->data);
            $queue
              ->deleteItem($item);
          } catch (\Exception $e) {

            // In case of any exception, just log it.
            $this->logger
              ->log(RfcLogLevel::ERROR, '%type: @message in %function (line %line of %file).', Error::decodeException($e));
          }
        }
        else {
          $to_release[] = $item;
        }
      }
      else {
        throw new \LogicException('Cannot perform queue processing on objects other than a QueuedEmail.');
      }
    }

    // Put these back into the queue.
    foreach ($to_release as $item) {
      $queue
        ->releaseItem($item);
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
WorkbenchEmailProcessor::$logger	protected	property	Logger.
WorkbenchEmailProcessor::$queueFactory	protected	property	The queue service.
WorkbenchEmailProcessor::$queueManager	protected	property	The queue plugin manager.
WorkbenchEmailProcessor::processEntity	public	function	Process the queue for a given entity.
WorkbenchEmailProcessor::PROCESSING_TIME		constant	Time to process for.
WorkbenchEmailProcessor::__construct	public	function	Constructs a WorkbencEmailProcessor object.