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<?php |
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namespace App\EventSubscriber; |
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use App\Response\ErrorResponse; |
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use App\Response\Violation; |
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use App\Response\ViolationListResponse; |
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use App\Rest\ValidationFailedException; |
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use JMS\Serializer\SerializerInterface; |
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use Psr\Log\LoggerInterface; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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use Symfony\Component\HttpFoundation\Response; |
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use Symfony\Component\HttpKernel\Event\ExceptionEvent; |
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use Symfony\Component\HttpKernel\Exception\HttpException; |
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use Symfony\Component\HttpKernel\KernelEvents; |
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class ApiExceptionSubscriber implements EventSubscriberInterface { |
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private const JsonContentType = 'application/json'; |
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private $serializer; |
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private $logger; |
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public function __construct(SerializerInterface $serializer, LoggerInterface $logger) { |
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$this->serializer = $serializer; |
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$this->logger = $logger; |
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} |
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public function onKernelException(ExceptionEvent $event) { |
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$request = $event->getRequest(); |
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if(!in_array(static::JsonContentType, $request->getAcceptableContentTypes())) { |
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return; |
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} |
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$throwable = $event->getThrowable(); |
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$code = Response::HTTP_INTERNAL_SERVER_ERROR; |
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// Case 1: general HttpException (Authorization/Authentication) or BadRequest |
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if($throwable instanceof HttpException) { |
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$code = $throwable->getStatusCode(); |
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$message = new ErrorResponse($throwable->getMessage(), get_class($throwable)); |
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} else if($throwable instanceof ValidationFailedException) { // Case 2: validation failed |
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$code = Response::HTTP_BAD_REQUEST; |
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$violations = [ ]; |
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foreach($throwable->getConstraintViolations() as $violation) { |
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$violations[] = new Violation($violation->getPropertyPath(), (string)$violation->getMessage()); |
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} |
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$message = new ViolationListResponse($violations); |
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} else { // Case 3: General error |
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$message = new ErrorResponse( |
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'An unknown error occured.', |
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get_class($throwable) |
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); |
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$this->logger->error($throwable->getMessage(), [ |
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'e' => $throwable |
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]); |
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} |
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$validStatusCodes = array_keys(Response::$statusTexts); |
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if(!in_array($code, $validStatusCodes)) { |
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$code = Response::HTTP_INTERNAL_SERVER_ERROR; |
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} |
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$response = new Response( |
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$this->serializer->serialize($message, 'json'), |
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$code |
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); |
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$event->setResponse($response); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public static function getSubscribedEvents() { |
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return [ |
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KernelEvents::EXCEPTION => 'onKernelException' |
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]; |
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} |
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} |
SchulIT /
idp
