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<?php |
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namespace Mouf\Mvc\Splash\Routers; |
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use Interop\Http\ServerMiddleware\DelegateInterface; |
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use Interop\Http\ServerMiddleware\MiddlewareInterface; |
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use Mouf\Mvc\Splash\Controllers\Http500HandlerInterface; |
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use Psr\Http\Message\ResponseInterface as Response; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface as Request; |
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use Psr\Log\LoggerInterface; |
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use Mouf\Mvc\Splash\Services\SplashUtils; |
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/** |
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* This router transforms exceptions into HTTP 500 pages, based on the configured error controller. |
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* |
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* @author Kevin Nguyen |
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* @author David Négrier |
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*/ |
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class ExceptionRouter implements MiddlewareInterface |
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{ |
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/** |
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* The logger. |
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* |
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* @var LoggerInterface |
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*/ |
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private $log; |
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/** |
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* The controller that will display 500 errors. |
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* |
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* @var Http500HandlerInterface |
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*/ |
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private $errorController; |
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/** |
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* @Important |
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* |
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* @param Http500HandlerInterface $errorController The controller in charge of displaying the HTTP 500 error. |
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* @param LoggerInterface $log Logger to log errors. |
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*/ |
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public function __construct(Http500HandlerInterface $errorController, LoggerInterface $log = null) |
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{ |
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$this->errorController = $errorController; |
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$this->log = $log; |
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} |
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/** |
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* Actually handle the exception. |
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* |
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* @param \Throwable $t |
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* @param Request $request |
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* @return ResponseInterface |
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*/ |
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private function handleException(\Throwable $t, Request $request) |
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{ |
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if ($this->log !== null) { |
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$this->log->error('Exception thrown inside a controller.', array( |
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'exception' => $t, |
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)); |
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} else { |
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// If no logger is set, let's log in PHP error_log |
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error_log($t->getMessage().' - '.$t->getTraceAsString()); |
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} |
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$response = SplashUtils::buildControllerResponse( |
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function () use ($t, $request) { |
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return $this->errorController->serverError($t, $request); |
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} |
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); |
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return $response; |
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} |
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/** |
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* Process an incoming server request and return a response, optionally delegating |
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* to the next middleware component to create the response. |
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* |
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* @param Request $request |
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* @param DelegateInterface $delegate |
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* |
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* @return Response |
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*/ |
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public function process(Request $request, DelegateInterface $delegate) |
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{ |
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try { |
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return $delegate->process($request); |
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} catch (\Throwable $t) { |
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return $this->handleException($t, $request); |
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} |
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} |
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} |
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