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<?php |
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declare(strict_types=1); |
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namespace Saikootau\ApiBundle\Event\Listener; |
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use Saikootau\ApiBundle\MediaType\Exception\NonNegotiableMediaTypeException; |
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use Saikootau\ApiBundle\MediaType\MediaTypeNegotiator; |
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use Saikootau\ApiBundle\MediaType\MediaTypes; |
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use Saikootau\ApiBundle\Resource\Builder\ErrorResourceBuilder; |
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use Saikootau\ApiBundle\Resource\Builder\ServiceResourceBuilder; |
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use Saikootau\ApiBundle\Serializer\Serializer; |
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use Symfony\Component\HttpFoundation\Response; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent; |
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use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface; |
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use Throwable; |
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class ExceptionResponseListener |
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{ |
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private $defaultContentType; |
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private $mediaTypeNegotiator; |
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private $exposeErrors; |
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public function __construct(MediaTypeNegotiator $mediaTypeNegotiator, string $defaultContentType, bool $exposeErrors = false) |
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{ |
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$this->mediaTypeNegotiator = $mediaTypeNegotiator; |
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$this->defaultContentType = $defaultContentType; |
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$this->exposeErrors = $exposeErrors; |
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} |
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public function onKernelException(GetResponseForExceptionEvent $event): void |
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{ |
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if ($event->getResponse()) { |
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// Another listener already added a response, skip |
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return; |
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} |
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if (($request = $event->getRequest()) && $request instanceof Request) { |
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$response = $this->getResponse($request, $event->getException()); |
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$event->setResponse($response); |
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} |
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} |
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private function getResponse(Request $request, Throwable $exception): Response |
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{ |
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$errors = $this->createErrorResourceBuilder()->build($exception); |
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$service = (new ServiceResourceBuilder($request)) |
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->addError(...$errors) |
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->build() |
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; |
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$serializer = $this->getSerializer($request); |
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return new Response( |
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$serializer->serialize($service), |
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$this->getResponseStatusCodeByException($exception), |
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$this->getResponseHeadersByException($serializer->getContentType(), $exception) |
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); |
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} |
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private function createErrorResourceBuilder(): ErrorResourceBuilder |
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{ |
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$errorResourceBuilder = new ErrorResourceBuilder(); |
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if ($this->exposeErrors) { |
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$errorResourceBuilder->exposeStack(); |
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} else { |
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$errorResourceBuilder->doNotExposeStack(); |
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} |
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return $errorResourceBuilder; |
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} |
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private function getResponseStatusCodeByException(Throwable $exception): int |
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{ |
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if ($exception instanceof HttpExceptionInterface) { |
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return $exception->getStatusCode(); |
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} |
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return Response::HTTP_INTERNAL_SERVER_ERROR; |
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} |
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private function getResponseHeadersByException(string $contentType, Throwable $exception): array |
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{ |
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$headers = []; |
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if ($exception instanceof HttpExceptionInterface) { |
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$headers = array_merge($headers, $exception->getHeaders()); |
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} |
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$headers['Content-Type'] = $contentType; |
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return $headers; |
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} |
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/** |
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* Get a matching serializer for the given request's acceptable content types. |
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* |
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* @param Request $request |
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* |
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* @return Serializer |
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* |
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* @throws NonNegotiableMediaTypeException |
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*/ |
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private function getSerializer(Request $request): Serializer |
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{ |
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try { |
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/** @var Serializer $serializer */ |
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$serializer = $this->mediaTypeNegotiator->negotiate(...$this->getRequestAcceptableContentTypes($request)); |
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} catch (NonNegotiableMediaTypeException $exception) { |
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/** @var Serializer $serializer */ |
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$serializer = $this->mediaTypeNegotiator->negotiate($this->defaultContentType); |
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} |
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return $serializer; |
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} |
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/** |
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* Returns an array of acceptable content types for the given request. |
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* |
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* @param Request $request |
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* |
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* @return string[] |
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*/ |
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private function getRequestAcceptableContentTypes(Request $request): array |
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{ |
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$acceptableContentTypes = $request->getAcceptableContentTypes(); |
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if (false !== ($anyIndex = array_search(MediaTypes::TYPE_APPLICATION_ANY, $acceptableContentTypes))) { |
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$acceptableContentTypes[$anyIndex] = $this->defaultContentType; |
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} |
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return $acceptableContentTypes; |
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} |
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} |
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hikaru-shindo /
api-bundle
