src/EventSubscriber/PressSite/ExceptionSubscriber.php line 86

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  1. <?php
  3. namespace App\EventSubscriber\PressSite;
  5. use App\Service\PressSite\AppContext;
  6. use App\Service\PressSite\DomainAwareManager;
  7. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  8. use Symfony\Component\HttpFoundation\Response;
  9. use Symfony\Component\HttpKernel\Event\ExceptionEvent;
  10. use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
  11. use Twig\Environment;
  13. /**
  14.  * Class ExceptionSubscriber.
  15.  */
  16. class ExceptionSubscriber implements EventSubscriberInterface
  17. {
  18.     /**
  19.      * The twig templating environment.
  20.      *
  21.      * @var \Twig\Environment
  22.      */
  23.     private $twig;
  25.     /**
  26.      * The custom context helper.
  27.      *
  28.      * @var \App\Service\PressSite\AppContext
  29.      */
  30.     private $appContext;
  32.     /**
  33.      * The custom service providing helper domain related methods.
  34.      *
  35.      * @var \App\Service\PressSite\DomainAwareManager
  36.      */
  37.     private $domainAwareManager;
  39.     /**
  40.      * The current environment value.
  41.      *
  42.      * @var string
  43.      */
  44.     private $currentEnvironment;
  46.     /**
  47.      * ExceptionSubscriber constructor.
  48.      *
  49.      * @param \Twig\Environment $twig
  50.      *   The twig templating environment
  51.      * @param \App\Service\PressSite\AppContext $appContext
  52.      *   The custom context helper
  53.      * @param \App\Service\PressSite\DomainAwareManager $domainAwareManager
  54.      *   The domain aware manager
  55.      * @param string $currentEnvironment
  56.      *   The current environment value - either "dev", "test" or "prod"
  57.      */
  58.     public function __construct(
  59.         Environment $twig,
  60.         AppContext $appContext,
  61.         DomainAwareManager $domainAwareManager,
  62.         string $currentEnvironment
  63.     ) {
  64.         $this->twig = $twig;
  65.         $this->appContext = $appContext;
  66.         $this->domainAwareManager = $domainAwareManager;
  67.         $this->currentEnvironment = $currentEnvironment;
  68.     }
  71.     public static function getSubscribedEvents()
  72.     {
  73.         return [
  74.             ExceptionEvent::class => 'onKernelException',
  75.         ];
  76.     }
  78.     /**
  79.      * Public callback for the exception event.
  80.      *
  81.      * Responsible for providing friendly "Not Found" page, only for the PR sites.
  82.      *
  83.      * @param \Symfony\Component\HttpKernel\Event\ExceptionEvent $event
  84.      *   The instance of the dispatched event
  85.      */
  86.     public function onKernelException(ExceptionEvent $event): void
  87.     {
  88.         // If the exception is occurring on site other than a PR one, then we do not provide custom template.
  89.         // If the exception is different than the Not Found one, then we do not provide custom template.
  90.         // If the current environment is not a production one, then we keep the default verbose template.
  91.         // If we don't have a valid domain instance (one that would indicate that we are currently on a
  92.         // PR site, then we keep the default template. That case will occur on AWS, because there we use
  93.         // one container with both PR and VOD API feature flags enabled).
  94.         if (
  95.             !$this->appContext->isPressSiteEnabled()
  96.             || !$this->domainAwareManager->getCurrentByHostnameAndLocale()
  97.             || !$event->getThrowable() instanceof NotFoundHttpException
  98.             || 'dev' === $this->currentEnvironment
  99.         ) {
  100.             return;
  101.         }
  103.         $request = $event->getRequest();
  105.         // The request locale could fallback to the default one "en" when an exception
  106.         // is being throw, since the route is not recognized, it may not intercept
  107.         // correctly the locale in the address bar.
  108.         if (!$this->domainAwareManager->supportsLanguage($request->getLocale())) {
  109.             $request->setLocale(
  110.                 $this->domainAwareManager
  111.                     ->getCurrentByHostnameAndLocale()
  112.                     ->getLanguageCode()
  113.             );
  114.         }
  116.         $response = new Response();
  117.         $response->setContent($this->twig->render('press_site/exception/error404.html.twig'));
  119.         $event->setResponse($response);
  120.     }
  121. }