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<?php
namespace Drupal\Core\Annotation;
use Drupal\Component\Annotation\Plugin;
/**
* Declare a worker class for processing a queue item.
*
* Worker plugins are used by some queues for processing the individual items
* in the queue. In that case, the ID of the worker plugin needs to match the
* machine name of a queue, so that you can retrieve the queue back end by
* calling \Drupal\Core\Queue\QueueFactory::get($plugin_id).
*
* \Drupal\Core\Cron::processQueues() processes queues that use workers; they
* can also be processed outside of the cron process.
*
* Some queues do not use worker plugins: you can create queues, add items to
* them, claim them, etc. without using a QueueWorker plugin. However, you will
* need to take care of processing the items in the queue in that case. You can
* look at \Drupal\Core\Cron::processQueues() for an example of how to process
* a queue that uses workers, and adapt it to your queue.
*
* Plugin Namespace: Plugin\QueueWorker
*
* For a working example, see
* \Drupal\aggregator\Plugin\QueueWorker\AggregatorRefresh.
*
* @see \Drupal\Core\Queue\QueueWorkerInterface
* @see \Drupal\Core\Queue\QueueWorkerBase
* @see \Drupal\Core\Queue\QueueWorkerManager
* @see plugin_api
*
* @Annotation
*/
class QueueWorker extends Plugin {
/**
* The plugin ID.
*
* @var string
*/
public $id;
/**
* The human-readable title of the plugin.
*
* @ingroup plugin_translatable
*
* @var \Drupal\Core\Annotation\Translation
*/
public $title;
/**
* An associative array containing the optional key:
* - time: (optional) How much time Drupal cron should spend on calling
* this worker in seconds. Defaults to 15.
*
* @var array (optional)
*/
public $cron;
}