--- /dev/null
+<?php
+
+namespace Drupal\media\Plugin\QueueWorker;
+
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\Core\Queue\QueueWorkerBase;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Process a queue of media items to fetch their thumbnails.
+ *
+ * @QueueWorker(
+ * id = "media_entity_thumbnail",
+ * title = @Translation("Thumbnail downloader"),
+ * cron = {"time" = 60}
+ * )
+ */
+class ThumbnailDownloader extends QueueWorkerBase implements ContainerFactoryPluginInterface {
+
+ /**
+ * The entity type manager service.
+ *
+ * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+ */
+ protected $entityTypeManager;
+
+ /**
+ * Constructs a new class instance.
+ *
+ * @param array $configuration
+ * A configuration array containing information about the plugin instance.
+ * @param string $plugin_id
+ * The plugin_id for the plugin instance.
+ * @param mixed $plugin_definition
+ * The plugin implementation definition.
+ * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+ * Entity type manager service.
+ */
+ public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityTypeManagerInterface $entity_type_manager) {
+ parent::__construct($configuration, $plugin_id, $plugin_definition);
+ $this->entityTypeManager = $entity_type_manager;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+ return new static(
+ $configuration,
+ $plugin_id,
+ $plugin_definition,
+ $container->get('entity_type.manager')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function processItem($data) {
+ /** @var \Drupal\media\Entity\Media $media */
+ if ($media = $this->entityTypeManager->getStorage('media')->load($data['id'])) {
+ $media->updateQueuedThumbnail();
+ $media->save();
+ }
+ }
+
+}