1. 8.5.x core/lib/Drupal/Core/Queue/QueueWorkerManager.php QueueWorkerManager
  2. 8.0.x core/lib/Drupal/Core/Queue/QueueWorkerManager.php QueueWorkerManager
  3. 8.1.x core/lib/Drupal/Core/Queue/QueueWorkerManager.php QueueWorkerManager
  4. 8.2.x core/lib/Drupal/Core/Queue/QueueWorkerManager.php QueueWorkerManager
  5. 8.3.x core/lib/Drupal/Core/Queue/QueueWorkerManager.php QueueWorkerManager
  6. 8.4.x core/lib/Drupal/Core/Queue/QueueWorkerManager.php QueueWorkerManager
  7. 8.6.x core/lib/Drupal/Core/Queue/QueueWorkerManager.php QueueWorkerManager

Defines the queue worker manager.


Expanded class hierarchy of QueueWorkerManager

See also




Plugin API

1 string reference to 'QueueWorkerManager'
core.services.yml in core/core.services.yml


core/lib/Drupal/Core/Queue/QueueWorkerManager.php, line 17


View source
class QueueWorkerManager extends DefaultPluginManager implements QueueWorkerManagerInterface {

   * Constructs an QueueWorkerManager object.
   * @param \Traversable $namespaces
   *   An object that implements \Traversable which contains the root paths
   *   keyed by the corresponding namespace to look for plugin implementations.
   * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
   *   Cache backend instance to use.
   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
   *   The module handler.
  public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
    parent::__construct('Plugin/QueueWorker', $namespaces, $module_handler, 'Drupal\\Core\\Queue\\QueueWorkerInterface', 'Drupal\\Core\\Annotation\\QueueWorker');
      ->setCacheBackend($cache_backend, 'queue_plugins');

   * {@inheritdoc}
  public function processDefinition(&$definition, $plugin_id) {
    parent::processDefinition($definition, $plugin_id);

    // Assign a default time if a cron is specified.
    if (isset($definition['cron'])) {
      $definition['cron'] += [
        'time' => 15,

   * {@inheritdoc}
   * @return \Drupal\Core\Queue\QueueWorkerInterface
  public function createInstance($plugin_id, array $configuration = []) {
    return parent::createInstance($plugin_id, $configuration);



Contains filters are case sensitive
Namesort descending Modifiers Type Description Overrides
DefaultPluginManager::$additionalAnnotationNamespaces protected property Additional namespaces the annotation discovery mechanism should scan for annotation definitions.
DefaultPluginManager::$alterHook protected property Name of the alter hook if one should be invoked.
DefaultPluginManager::$cacheKey protected property The cache key.
DefaultPluginManager::$cacheTags protected property An array of cache tags to use for the cached definitions.
DefaultPluginManager::$defaults protected property A set of defaults to be referenced by $this->processDefinition() if additional processing of plugins is necessary or helpful for development purposes.
DefaultPluginManager::$moduleHandler protected property The module handler to invoke the alter hook.
DefaultPluginManager::$namespaces protected property An object that implements \Traversable which contains the root paths keyed by the corresponding namespace to look for plugin implementations.
DefaultPluginManager::$pluginDefinitionAnnotationName protected property The name of the annotation that contains the plugin definition.
DefaultPluginManager::$pluginInterface protected property The interface each plugin should implement.
DefaultPluginManager::$subdir protected property The subdirectory within a namespace to look for plugins, or FALSE if the plugins are in the top level of the namespace.
DefaultPluginManager::alterDefinitions protected function Invokes the hook to alter the definitions if the alter hook is set.
DefaultPluginManager::alterInfo protected function Initializes the alter hook.
DefaultPluginManager::clearCachedDefinitions public function Clears static and persistent plugin definition caches. Overrides CachedDiscoveryInterface::clearCachedDefinitions
DefaultPluginManager::extractProviderFromDefinition protected function Extracts the provider from a plugin definition.
DefaultPluginManager::findDefinitions protected function Finds plugin definitions.
DefaultPluginManager::getCacheContexts public function The cache contexts associated with this object. Overrides CacheableDependencyInterface::getCacheContexts
DefaultPluginManager::getCachedDefinitions protected function Returns the cached plugin definitions of the decorated discovery class.
DefaultPluginManager::getCacheMaxAge public function The maximum age for which this object may be cached. Overrides CacheableDependencyInterface::getCacheMaxAge
DefaultPluginManager::getCacheTags public function The cache tags associated with this object. Overrides CacheableDependencyInterface::getCacheTags
DefaultPluginManager::getDefinitions public function Gets the definition of all plugins for this type. Overrides DiscoveryTrait::getDefinitions
DefaultPluginManager::getDiscovery protected function Gets the plugin discovery. Overrides PluginManagerBase::getDiscovery
DefaultPluginManager::getFactory protected function Gets the plugin factory. Overrides PluginManagerBase::getFactory
DefaultPluginManager::providerExists protected function Determines if the provider of a definition exists.
DefaultPluginManager::setCacheBackend public function Initialize the cache backend.
DefaultPluginManager::setCachedDefinitions protected function Sets a cache of plugin definitions for the decorated discovery class.
DefaultPluginManager::useCaches public function Disable the use of caches. Overrides CachedDiscoveryInterface::useCaches
DiscoveryCachedTrait::$definitions protected property Cached definitions array.
DiscoveryCachedTrait::getDefinition public function Gets a specific plugin definition. Overrides DiscoveryTrait::getDefinition
DiscoveryTrait::doGetDefinition protected function Gets a specific plugin definition.
DiscoveryTrait::hasDefinition public function Indicates if a specific plugin definition exists. Overrides DiscoveryInterface::hasDefinition
PluginManagerBase::$discovery protected property The object that discovers plugins managed by this manager.
PluginManagerBase::$factory protected property The object that instantiates plugins managed by this manager.
PluginManagerBase::$mapper protected property The object that returns the preconfigured plugin instance appropriate for a particular runtime condition.
PluginManagerBase::getInstance public function Gets a preconfigured instance of a plugin. Overrides MapperInterface::getInstance
QueueWorkerManager::createInstance public function Overrides PluginManagerBase::createInstance
QueueWorkerManager::processDefinition public function Performs extra processing on plugin definitions. Overrides DefaultPluginManager::processDefinition
QueueWorkerManager::__construct public function Constructs an QueueWorkerManager object. Overrides DefaultPluginManager::__construct
UseCacheBackendTrait::$cacheBackend protected property Cache backend instance.
UseCacheBackendTrait::$useCaches protected property Flag whether caches should be used or skipped.
UseCacheBackendTrait::cacheGet protected function Fetches from the cache backend, respecting the use caches flag.
UseCacheBackendTrait::cacheSet protected function Stores data in the persistent cache, respecting the use caches flag.