class DefaultExceptionSubscriber

Same name in this branch
  1. 8.9.x core/modules/jsonapi/src/EventSubscriber/DefaultExceptionSubscriber.php \Drupal\jsonapi\EventSubscriber\DefaultExceptionSubscriber
Same name in other branches
  1. 9 core/modules/jsonapi/src/EventSubscriber/DefaultExceptionSubscriber.php \Drupal\jsonapi\EventSubscriber\DefaultExceptionSubscriber
  2. 9 core/modules/serialization/src/EventSubscriber/DefaultExceptionSubscriber.php \Drupal\serialization\EventSubscriber\DefaultExceptionSubscriber
  3. 10 core/modules/jsonapi/src/EventSubscriber/DefaultExceptionSubscriber.php \Drupal\jsonapi\EventSubscriber\DefaultExceptionSubscriber
  4. 10 core/modules/serialization/src/EventSubscriber/DefaultExceptionSubscriber.php \Drupal\serialization\EventSubscriber\DefaultExceptionSubscriber
  5. 11.x core/modules/jsonapi/src/EventSubscriber/DefaultExceptionSubscriber.php \Drupal\jsonapi\EventSubscriber\DefaultExceptionSubscriber
  6. 11.x core/modules/serialization/src/EventSubscriber/DefaultExceptionSubscriber.php \Drupal\serialization\EventSubscriber\DefaultExceptionSubscriber

Handles default error responses in serialization formats.

Hierarchy

  • class \Drupal\Core\EventSubscriber\HttpExceptionSubscriberBase implements \Symfony\Component\EventDispatcher\EventSubscriberInterface
    • class \Drupal\serialization\EventSubscriber\DefaultExceptionSubscriber extends \Drupal\Core\EventSubscriber\HttpExceptionSubscriberBase

Expanded class hierarchy of DefaultExceptionSubscriber

2 files declare their use of DefaultExceptionSubscriber
DefaultExceptionSubscriber.php in core/modules/jsonapi/src/EventSubscriber/DefaultExceptionSubscriber.php
DefaultExceptionSubscriberTest.php in core/modules/serialization/tests/src/Unit/EventSubscriber/DefaultExceptionSubscriberTest.php
1 string reference to 'DefaultExceptionSubscriber'
serialization.services.yml in core/modules/serialization/serialization.services.yml
core/modules/serialization/serialization.services.yml
1 service uses DefaultExceptionSubscriber
serialization.exception.default in core/modules/serialization/serialization.services.yml
Drupal\serialization\EventSubscriber\DefaultExceptionSubscriber

File

core/modules/serialization/src/EventSubscriber/DefaultExceptionSubscriber.php, line 15

Namespace

Drupal\serialization\EventSubscriber
View source
class DefaultExceptionSubscriber extends HttpExceptionSubscriberBase {
    
    /**
     * The serializer.
     *
     * @var \Symfony\Component\Serializer\Serializer
     */
    protected $serializer;
    
    /**
     * The available serialization formats.
     *
     * @var array
     */
    protected $serializerFormats = [];
    
    /**
     * DefaultExceptionSubscriber constructor.
     *
     * @param \Symfony\Component\Serializer\SerializerInterface $serializer
     *   The serializer service.
     * @param array $serializer_formats
     *   The available serialization formats.
     */
    public function __construct(SerializerInterface $serializer, array $serializer_formats) {
        $this->serializer = $serializer;
        $this->serializerFormats = $serializer_formats;
    }
    
    /**
     * {@inheritdoc}
     */
    protected function getHandledFormats() {
        return $this->serializerFormats;
    }
    
    /**
     * {@inheritdoc}
     */
    protected static function getPriority() {
        // This will fire after the most common HTML handler, since HTML requests
        // are still more common than HTTP requests. But it has a lower priority
        // than \Drupal\Core\EventSubscriber\ExceptionJsonSubscriber::on4xx(), so
        // that this also handles the 'json' format. Then all serialization formats
        // (::getHandledFormats()) are handled by this exception subscriber, which
        // results in better consistency.
        return -70;
    }
    
    /**
     * Handles all 4xx errors for all serialization failures.
     *
     * @param \Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event
     *   The event to process.
     */
    public function on4xx(GetResponseForExceptionEvent $event) {
        
        /** @var \Symfony\Component\HttpKernel\Exception\HttpExceptionInterface $exception */
        $exception = $event->getException();
        $request = $event->getRequest();
        $format = $request->getRequestFormat();
        $content = [
            'message' => $exception->getMessage(),
        ];
        $encoded_content = $this->serializer
            ->serialize($content, $format);
        $headers = $exception->getHeaders();
        // Add the MIME type from the request to send back in the header.
        $headers['Content-Type'] = $request->getMimeType($format);
        // If the exception is cacheable, generate a cacheable response.
        if ($exception instanceof CacheableDependencyInterface) {
            $response = new CacheableResponse($encoded_content, $exception->getStatusCode(), $headers);
            $response->addCacheableDependency($exception);
        }
        else {
            $response = new Response($encoded_content, $exception->getStatusCode(), $headers);
        }
        $event->setResponse($response);
    }

}

Members

Title Sort descending Modifiers Object type Summary Overriden Title Overrides
DefaultExceptionSubscriber::$serializer protected property The serializer.
DefaultExceptionSubscriber::$serializerFormats protected property The available serialization formats.
DefaultExceptionSubscriber::getHandledFormats protected function Specifies the request formats this subscriber will respond to. Overrides HttpExceptionSubscriberBase::getHandledFormats 1
DefaultExceptionSubscriber::getPriority protected static function Specifies the priority of all listeners in this class. Overrides HttpExceptionSubscriberBase::getPriority 1
DefaultExceptionSubscriber::on4xx public function Handles all 4xx errors for all serialization failures.
DefaultExceptionSubscriber::__construct public function DefaultExceptionSubscriber constructor.
HttpExceptionSubscriberBase::getSubscribedEvents public static function Registers the methods in this class that should be listeners.
HttpExceptionSubscriberBase::onException public function Handles errors for this subscriber. 1

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