class PathAliasCreate

class PathAliasCreate extends RulesActionBase implements ContainerFactoryPluginInterface {
  
  /**
   * The alias storage service.
   *
   * @var \Drupal\Core\Entity\EntityStorageInterface
   */
  protected $aliasStorage;
  
  /**
   * Constructs a PathAliasCreate object.
   *
   * @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\EntityStorageInterface $alias_storage
   *   The alias storage service.
   */
  public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityStorageInterface $alias_storage) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
    $this->aliasStorage = $alias_storage;
  }
  
  /**
   * {@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')
      ->getStorage('path_alias'));
  }
  
  /**
   * Creates an alias for an existing path.
   *
   * @param string $source
   *   The existing path that should be aliased.
   * @param string $alias
   *   The alias path that should be created.
   * @param \Drupal\Core\Language\LanguageInterface $language
   *   (optional) The language.
   */
  protected function doExecute($source, $alias, LanguageInterface $language = NULL) {
    $langcode = isset($language) ? $language->getId() : LanguageInterface::LANGCODE_NOT_SPECIFIED;
    $path_alias = $this->aliasStorage
      ->create([
      'path' => $source,
      'alias' => $alias,
      'langcode' => $langcode,
    ]);
    $path_alias->save();
  }

}