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<?php
namespace Symfony\Component\HttpKernel\EventListener;
use Psr\Log\LoggerInterface;
use Symfony\Component\Debug\Exception\FlattenException;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Log\DebugLoggerInterface;
use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\HttpKernel\HttpKernelInterface;
use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
class ExceptionListener implements EventSubscriberInterface {
protected $controller;
protected $logger;
public function __construct($controller, LoggerInterface $logger = null) {
$this->controller = $controller;
$this->logger = $logger;
}
public function onKernelException(GetResponseForExceptionEvent $event) {
$exception = $event
->getException();
$request = $event
->getRequest();
$this
->logException($exception, sprintf('Uncaught PHP Exception %s: "%s" at %s line %s', get_class($exception), $exception
->getMessage(), $exception
->getFile(), $exception
->getLine()));
$request = $this
->duplicateRequest($exception, $request);
try {
$response = $event
->getKernel()
->handle($request, HttpKernelInterface::SUB_REQUEST, false);
} catch (\Exception $e) {
$this
->logException($e, sprintf('Exception thrown when handling an exception (%s: %s at %s line %s)', get_class($e), $e
->getMessage(), $e
->getFile(), $e
->getLine()), false);
$wrapper = $e;
while ($prev = $wrapper
->getPrevious()) {
if ($exception === ($wrapper = $prev)) {
throw $e;
}
}
$prev = new \ReflectionProperty('Exception', 'previous');
$prev
->setAccessible(true);
$prev
->setValue($wrapper, $exception);
throw $e;
}
$event
->setResponse($response);
}
public static function getSubscribedEvents() {
return array(
KernelEvents::EXCEPTION => array(
'onKernelException',
-128,
),
);
}
protected function logException(\Exception $exception, $message) {
if (null !== $this->logger) {
if (!$exception instanceof HttpExceptionInterface || $exception
->getStatusCode() >= 500) {
$this->logger
->critical($message, array(
'exception' => $exception,
));
}
else {
$this->logger
->error($message, array(
'exception' => $exception,
));
}
}
}
protected function duplicateRequest(\Exception $exception, Request $request) {
$attributes = array(
'_controller' => $this->controller,
'exception' => FlattenException::create($exception),
'logger' => $this->logger instanceof DebugLoggerInterface ? $this->logger : null,
'format' => $request
->getRequestFormat(),
);
$request = $request
->duplicate(null, null, $attributes);
$request
->setMethod('GET');
return $request;
}
}