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<?php |
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declare(strict_types=1); |
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namespace Acelaya\ExpressiveErrorHandler\ErrorHandler; |
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use Acelaya\ExpressiveErrorHandler\Exception\InvalidArgumentException; |
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use Acelaya\ExpressiveErrorHandler\Log\LogMessageBuilderInterface; |
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use Psr\Http\Message\ResponseInterface as Response; |
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use Psr\Http\Message\ServerRequestInterface as Request; |
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use Psr\Log\LoggerInterface; |
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use Throwable; |
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use function explode; |
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use function implode; |
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use function sprintf; |
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class ContentBasedErrorResponseGenerator implements ErrorResponseGeneratorInterface |
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{ |
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private const DEFAULT_CONTENT = 'text/html'; |
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/** @var ErrorResponseGeneratorManagerInterface */ |
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private $errorHandlerManager; |
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/** @var LoggerInterface */ |
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private $logger; |
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/** @var LogMessageBuilderInterface */ |
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private $logMessageBuilder; |
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/** @var string */ |
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private $defaultContentType; |
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/** |
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* ContentBasedErrorResponseGenerator constructor. |
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* @param ErrorResponseGeneratorManagerInterface $errorHandlerManager |
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* @param LoggerInterface $logger |
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* @param LogMessageBuilderInterface $logMessageBuilder |
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* @param string $defaultContentType |
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*/ |
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public function __construct( |
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ErrorResponseGeneratorManagerInterface $errorHandlerManager, |
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LoggerInterface $logger, |
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LogMessageBuilderInterface $logMessageBuilder, |
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string $defaultContentType = self::DEFAULT_CONTENT |
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) { |
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$this->errorHandlerManager = $errorHandlerManager; |
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$this->logger = $logger; |
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$this->logMessageBuilder = $logMessageBuilder; |
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$this->defaultContentType = $defaultContentType; |
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} |
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/** |
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* Final handler for an application. |
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* |
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* @param \Throwable|null $e |
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* @param Request $request |
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* @param Response $response |
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* @return Response |
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* @throws InvalidArgumentException |
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*/ |
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public function __invoke(?Throwable $e, Request $request, Response $response): Response |
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{ |
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// Try to get an error handler for provided request accepted type |
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$errorHandler = $this->resolveErrorHandlerFromAcceptHeader($request); |
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$this->logger->error($this->logMessageBuilder->buildMessage($request, $response, $e)); |
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return $errorHandler($e, $request, $response); |
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} |
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/** |
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* Tries to resolve an error response generator based on request's accept header |
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* |
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* @param Request $request |
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* @return callable |
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* @throws InvalidArgumentException |
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*/ |
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private function resolveErrorHandlerFromAcceptHeader(Request $request): callable |
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{ |
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// Try to find an error handler for one of the accepted content types |
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$accepts = $request->hasHeader('Accept') ? $request->getHeaderLine('Accept') : $this->defaultContentType; |
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/** @var array $accepts */ |
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$accepts = explode(',', $accepts); |
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foreach ($accepts as $accept) { |
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if (! $this->errorHandlerManager->has($accept)) { |
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continue; |
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} |
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return $this->errorHandlerManager->get($accept); |
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} |
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// If it wasn't possible to find an error handler for accepted content type, use default one if registered |
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if ($this->errorHandlerManager->has($this->defaultContentType)) { |
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return $this->errorHandlerManager->get($this->defaultContentType); |
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} |
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// It wasn't possible to find an error handler |
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throw new InvalidArgumentException(sprintf( |
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'It wasn\'t possible to find an error handler for ["%s"] content types. ' |
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. 'Make sure you have registered at least the default "%s" content type', |
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implode('", "', $accepts), |
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$this->defaultContentType |
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)); |
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} |
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} |
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acelaya /
ze-content-based-error-handler
