src/EventSubscriber/RateLimiterSubscriber.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\RequestEvent;
  7. use Symfony\Component\HttpKernel\Exception\TooManyRequestsHttpException;
  8. use Symfony\Component\RateLimiter\RateLimiterFactory;
  10. class RateLimiterSubscriber implements EventSubscriberInterface
  11. {
  12.     public function __construct(
  13.         private RateLimiterFactory $anonymousApiLimiter,
  14.     ) {}
  16.     public static function getSubscribedEvents(): array
  17.     {
  18.         return [
  19.             RequestEvent::class => 'onKernelRequest',
  20.         ];
  21.     }
  23.     public function onKernelRequest(RequestEvent $event): void
  24.     {
  25.         $request = $event->getRequest();
  27.         if ($request->isMethod('GET') || $request->isMethod('POST')) {
  28.             $limiter = $this->anonymousApiLimiter->create($request->getClientIp());
  30.             if (false === $limiter->consume(1)->isAccepted()) {
  31.                 throw new TooManyRequestsHttpException();
  32.             }
  33.         }
  34.     }
  35. }