diff core/modules/node/src/EventSubscriber/NodeTranslationMigrateSubscriber.php @ 0:c75dbcec494b

Initial commit from drush-created site

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/node/src/EventSubscriber/NodeTranslationMigrateSubscriber.php	Thu Jul 05 14:24:15 2018 +0000
@@ -0,0 +1,113 @@
+<?php
+
+namespace Drupal\node\EventSubscriber;
+
+use Drupal\Core\KeyValueStore\KeyValueFactoryInterface;
+use Drupal\Core\State\StateInterface;
+use Drupal\migrate\Event\EventBase;
+use Drupal\migrate\Event\MigrateEvents;
+use Drupal\migrate\Event\MigrateImportEvent;
+use Drupal\migrate\Event\MigratePostRowSaveEvent;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * Creates a key value collection for migrated node translation redirections.
+ *
+ * If we are migrating node translations from Drupal 6 or 7, these nodes will be
+ * combined with their source node. Since there still might be references to the
+ * URLs of these now consolidated nodes, this service saves the mapping between
+ * the old nids to the new ones to be able to redirect them to the right node in
+ * the right language.
+ *
+ * The mapping is stored in the "node_translation_redirect" key/value collection
+ * and the redirection is made by the NodeTranslationExceptionSubscriber class.
+ *
+ * @see \Drupal\node\NodeServiceProvider
+ * @see \Drupal\node\EventSubscriber\NodeTranslationExceptionSubscriber
+ */
+class NodeTranslationMigrateSubscriber implements EventSubscriberInterface {
+
+  /**
+   * The key value factory.
+   *
+   * @var \Drupal\Core\KeyValueStore\KeyValueFactoryInterface
+   */
+  protected $keyValue;
+
+  /**
+   * The state service.
+   *
+   * @var \Drupal\Core\State\StateInterface
+   */
+  protected $state;
+
+  /**
+   * Constructs the NodeTranslationMigrateSubscriber.
+   *
+   * @param \Drupal\Core\KeyValueStore\KeyValueFactoryInterface $key_value
+   *   The key value factory.
+   * @param \Drupal\Core\State\StateInterface $state
+   *   The state service.
+   */
+  public function __construct(KeyValueFactoryInterface $key_value, StateInterface $state) {
+    $this->keyValue = $key_value;
+    $this->state = $state;
+  }
+
+  /**
+   * Helper method to check if we are migrating translated nodes.
+   *
+   * @param \Drupal\migrate\Event\EventBase $event
+   *   The migrate event.
+   *
+   * @return bool
+   *   True if we are migrating translated nodes, false otherwise.
+   */
+  protected function isNodeTranslationsMigration(EventBase $event) {
+    $migration = $event->getMigration();
+    $source_configuration = $migration->getSourceConfiguration();
+    $destination_configuration = $migration->getDestinationConfiguration();
+    return !empty($source_configuration['translations']) && $destination_configuration['plugin'] === 'entity:node';
+  }
+
+  /**
+   * Maps the old nid to the new one in the key value collection.
+   *
+   * @param \Drupal\migrate\Event\MigratePostRowSaveEvent $event
+   *   The migrate post row save event.
+   */
+  public function onPostRowSave(MigratePostRowSaveEvent $event) {
+    if ($this->isNodeTranslationsMigration($event)) {
+      $row = $event->getRow();
+      $source = $row->getSource();
+      $destination = $row->getDestination();
+      $collection = $this->keyValue->get('node_translation_redirect');
+      $collection->set($source['nid'], [$destination['nid'], $destination['langcode']]);
+    }
+  }
+
+  /**
+   * Set the node_translation_redirect state to enable the redirections.
+   *
+   * @param \Drupal\migrate\Event\MigrateImportEvent $event
+   *   The migrate import event.
+   */
+  public function onPostImport(MigrateImportEvent $event) {
+    if ($this->isNodeTranslationsMigration($event)) {
+      $this->state->set('node_translation_redirect', TRUE);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    $events = [];
+
+    $events[MigrateEvents::POST_ROW_SAVE] = ['onPostRowSave'];
+    $events[MigrateEvents::POST_IMPORT] = ['onPostImport'];
+
+    return $events;
+  }
+
+}