class LocaleTranslation in Drupal 8

Executes interface translation queue tasks.

Plugin annotation

@QueueWorker(
  id = "locale_translation",
  title = @Translation("Update translations"),
  cron = {"time" = 30}
)

Hierarchy

• class \Drupal\Component\Plugin\PluginBase implements DerivativeInspectionInterface, PluginInspectionInterface
  • class \Drupal\Core\Queue\QueueWorkerBase implements QueueWorkerInterface
    • class \Drupal\locale\Plugin\QueueWorker\LocaleTranslation implements ContainerFactoryPluginInterface

File

core/modules/locale/src/Plugin/QueueWorker/LocaleTranslation.php, line 20

Namespace

Drupal\locale\Plugin\QueueWorker

class LocaleTranslation extends QueueWorkerBase implements ContainerFactoryPluginInterface {

  /**
   * The module handler.
   *
   * @var \Drupal\Core\Extension\ModuleHandlerInterface
   */
  protected $moduleHandler;

  /**
   * The queue object.
   *
   * @var \Drupal\Core\Queue\QueueInterface
   */
  protected $queue;

  /**
   * Constructs a new LocaleTranslation 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 array $plugin_definition
   *   The plugin implementation definition.
   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
   *   The module handler.
   * @param \Drupal\Core\Queue\QueueInterface $queue
   *   The queue object.
   */
  public function __construct(array $configuration, $plugin_id, array $plugin_definition, ModuleHandlerInterface $module_handler, QueueInterface $queue) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
    $this->moduleHandler = $module_handler;
    $this->queue = $queue;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static($configuration, $plugin_id, $plugin_definition, $container
      ->get('module_handler'), $container
      ->get('queue')
      ->get('locale_translation', TRUE));
  }

  /**
   * {@inheritdoc}
   *
   * The translation update functions executed here are batch operations which
   * are also used in translation update batches. The batch functions may need
   * to be executed multiple times to complete their task, typically this is the
   * translation import function. When a batch function is not finished, a new
   * queue task is created and added to the end of the queue. The batch context
   * data is needed to continue the batch task is stored in the queue with the
   * queue data.
   */
  public function processItem($data) {
    $this->moduleHandler
      ->loadInclude('locale', 'batch.inc');
    list($function, $args) = $data;

    // We execute batch operation functions here to check, download and import
    // the translation files. Batch functions use a context variable as last
    // argument which is passed by reference. When a batch operation is called
    // for the first time a default batch context is created. When called
    // iterative (usually the batch import function) the batch context is passed
    // through via the queue and is part of the $data.
    $last = count($args) - 1;
    if (!is_array($args[$last]) || !isset($args[$last]['finished'])) {
      $batch_context = [
        'sandbox' => [],
        'results' => [],
        'finished' => 1,
        'message' => '',
      ];
    }
    else {
      $batch_context = $args[$last];
      unset($args[$last]);
    }
    $args = array_merge($args, [
      &$batch_context,
    ]);

    // Call the batch operation function.
    call_user_func_array($function, $args);

    // If the batch operation is not finished we create a new queue task to
    // continue the task. This is typically the translation import task.
    if ($batch_context['finished'] < 1) {
      unset($batch_context['strings']);
      $this->queue
        ->createItem([
        $function,
        $args,
      ]);
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
LocaleTranslation::$moduleHandler	protected	property	The module handler.
LocaleTranslation::$queue	protected	property	The queue object.
LocaleTranslation::create	public static	function	Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create
LocaleTranslation::processItem	public	function	The translation update functions executed here are batch operations which are also used in translation update batches. The batch functions may need to be executed multiple times to complete their task, typically this is the translation import… Overrides QueueWorkerInterface::processItem
LocaleTranslation::__construct	public	function	Constructs a new LocaleTranslation object. Overrides PluginBase::__construct
PluginBase::$configuration	protected	property	Configuration information passed into the plugin.	1
PluginBase::$pluginDefinition	protected	property	The plugin implementation definition.	1
PluginBase::$pluginId	protected	property	The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR		constant	A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId	public	function	Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId	public	function	Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition	public	function	Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition	3
PluginBase::getPluginId	public	function	Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable	public	function	Determines if the plugin is configurable.