src/EventSubscriber/GlobalHttpCacheSubscriber.php line 23

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  1. <?php
  3. namespace App\EventSubscriber;
  5. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  6. use Symfony\Component\HttpKernel\Event\ResponseEvent;
  7. use Symfony\Component\HttpKernel\KernelEvents;
  8. use Symfony\Component\Security\Core\Security;
  10. class GlobalHttpCacheSubscriber implements EventSubscriberInterface
  11. {
  12.     public function __construct(private Security $security)
  13.     {
  14.     }
  16.     public static function getSubscribedEvents(): array
  17.     {
  18.         return [
  19.             KernelEvents::RESPONSE => ['onResponse', -10],
  20.         ];
  21.     }
  23.     public function onResponse(ResponseEvent $event): void
  24.     {
  25.         if (!$event->isMainRequest()) {
  26.             return;
  27.         }
  29.         $request = $event->getRequest();
  30.         if ($request->getMethod() !== 'GET') {
  31.             return;
  32.         }
  34.         $response = $event->getResponse();
  35.         if ($response->getStatusCode() < 200 || $response->getStatusCode() >= 300) {
  36.             return;
  37.         }
  39.         $cacheControl = $response->headers->get('Cache-Control');
  40.         if ($cacheControl && (str_contains($cacheControl, 'no-store') || str_contains($cacheControl, 'no-cache'))) {
  41.             return;
  42.         }
  44.         if ($cacheControl) {
  45.             return;
  46.         }
  48.         $isAuthenticated = (bool) $this->security->getUser();
  49.         if ($isAuthenticated) {
  50.             $response->setPrivate();
  51.             $response->setMaxAge(30);
  52.             $response->setSharedMaxAge(0);
  53.             $response->headers->set('Vary', 'Cookie, Authorization', false);
  54.         } else {
  55.             $response->setPublic();
  56.             $response->setMaxAge(300);
  57.             $response->setSharedMaxAge(600);
  58.             $response->headers->set('Vary', 'Accept-Encoding, Accept-Language', false);
  59.             $response->headers->set(
  60.                 'Cache-Control',
  61.                 trim($response->headers->get('Cache-Control') . ', stale-while-revalidate=30, stale-if-error=600')
  62.             );
  63.             $contentType = (string) $response->headers->get('Content-Type');
  64.             if (str_contains($contentType, 'application/json') && !$response->getEtag()) {
  65.                 $response->setEtag(sha1((string) $response->getContent()));
  66.             }
  67.         }
  68.     }
  69. }