getResponse(); if (!$response instanceof AttachmentsInterface) { return; } $attachments = $response->getAttachments(); if (!isset($attachments['big_pipe_placeholders']) && !isset($attachments['big_pipe_nojs_placeholders'])) { if (strpos($response->getContent(), static::CONTENT_TRIGGER_EXCEPTION) !== FALSE) { throw new \Exception('Oh noes!'); } } } /** * Exposes all BigPipe placeholders (JS and no-JS) via headers for testing. * * @param \Symfony\Component\HttpKernel\Event\FilterResponseEvent $event * The event to process. */ public function onRespondSetBigPipeDebugPlaceholderHeaders(FilterResponseEvent $event) { $response = $event->getResponse(); if (!$response instanceof HtmlResponse) { return; } $attachments = $response->getAttachments(); $response->headers->set('BigPipe-Test-Placeholders', ''); $response->headers->set('BigPipe-Test-No-Js-Placeholders', ''); if (!empty($attachments['big_pipe_placeholders'])) { $response->headers->set('BigPipe-Test-Placeholders', implode(' ', array_keys($attachments['big_pipe_placeholders']))); } if (!empty($attachments['big_pipe_nojs_placeholders'])) { $response->headers->set('BigPipe-Test-No-Js-Placeholders', implode(' ', array_map('rawurlencode', array_keys($attachments['big_pipe_nojs_placeholders'])))); } } /** * {@inheritdoc} */ public static function getSubscribedEvents() { // Run just before \Drupal\big_pipe\EventSubscriber\HtmlResponseBigPipeSubscriber::onRespond(). $events[KernelEvents::RESPONSE][] = ['onRespondSetBigPipeDebugPlaceholderHeaders', -9999]; // Run just after \Drupal\big_pipe\EventSubscriber\HtmlResponseBigPipeSubscriber::onRespond(). $events[KernelEvents::RESPONSE][] = ['onRespondTriggerException', -10001]; return $events; } }