Issue #3379222: QueueProcessor cron getPluginDefinition() bug

src/Plugin/QueueWorker/QueueProcessor.php

@@ -4,7 +4,9 @@ declare(strict_types=1);
 
 namespace Drupal\mailchimp_transactional\Plugin\QueueWorker;
 
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
 use Drupal\Core\Queue\QueueWorkerBase;
+use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
  * Sends queued mail messages.
@@ -12,17 +14,19 @@ use Drupal\Core\Queue\QueueWorkerBase;
  * @QueueWorker(
  *   id = "mailchimp_transactional_queue",
  *   title = @Translation("Sends queued mail messages"),
- *   cron = {"time" = 60}
  * )
  */
-class QueueProcessor extends QueueWorkerBase {
+class QueueProcessor extends QueueWorkerBase implements ContainerFactoryPluginInterface {
 
   /**
-   * Constructor.
+   * {@inheritdoc}
    */
-  public function __construct() {
-    $config = \Drupal::service('config.factory')->get('mailchimp_transactional.settings');
-    $this->cron['time'] = $config->get('mailchimp_transactional_queue_worker_timeout', 60);
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    $config = $container->get('config.factory')->get('mailchimp_transactional.settings');
+    $timeout = $config->get('mailchimp_transactional_queue_worker_timeout');
+    $plugin_definition['cron']['time'] = $timeout ?? 60;
+
+    return new static($configuration, $plugin_id, $plugin_definition);
   }
 
   /**