Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Core\EventSubscriber;
Chris@0: 
Chris@0: use Drupal\Core\Logger\LoggerChannelFactoryInterface;
Chris@0: use Drupal\Core\Utility\Error;
Chris@0: use Symfony\Component\EventDispatcher\EventSubscriberInterface;
Chris@0: use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
Chris@0: use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
Chris@0: use Symfony\Component\HttpKernel\KernelEvents;
Chris@0: 
Chris@0: /**
Chris@0:  * Log exceptions without further handling.
Chris@0:  */
Chris@0: class ExceptionLoggingSubscriber implements EventSubscriberInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * The logger channel factory.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Logger\LoggerChannelFactoryInterface
Chris@0:    */
Chris@0:   protected $logger;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a new ExceptionLoggingSubscriber.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Logger\LoggerChannelFactoryInterface $logger
Chris@0:    *   The logger channel factory.
Chris@0:    */
Chris@0:   public function __construct(LoggerChannelFactoryInterface $logger) {
Chris@0:     $this->logger = $logger;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Log 403 errors.
Chris@0:    *
Chris@0:    * @param \Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event
Chris@0:    *   The event to process.
Chris@0:    */
Chris@0:   public function on403(GetResponseForExceptionEvent $event) {
Chris@0:     $request = $event->getRequest();
Chris@0:     $this->logger->get('access denied')->warning('@uri', ['@uri' => $request->getRequestUri()]);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Log 404 errors.
Chris@0:    *
Chris@0:    * @param \Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event
Chris@0:    *   The event to process.
Chris@0:    */
Chris@0:   public function on404(GetResponseForExceptionEvent $event) {
Chris@0:     $request = $event->getRequest();
Chris@0:     $this->logger->get('page not found')->warning('@uri', ['@uri' => $request->getRequestUri()]);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Log not-otherwise-specified errors, including HTTP 500.
Chris@0:    *
Chris@0:    * @param \Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event
Chris@0:    *   The event to process.
Chris@0:    */
Chris@0:   public function onError(GetResponseForExceptionEvent $event) {
Chris@0:     $exception = $event->getException();
Chris@0:     $error = Error::decodeException($exception);
Chris@0:     $this->logger->get('php')->log($error['severity_level'], '%type: @message in %function (line %line of %file).', $error);
Chris@0: 
Chris@0:     $is_critical = !$exception instanceof HttpExceptionInterface || $exception->getStatusCode() >= 500;
Chris@0:     if ($is_critical) {
Chris@0:       error_log(sprintf('Uncaught PHP Exception %s: "%s" at %s line %s', get_class($exception), $exception->getMessage(), $exception->getFile(), $exception->getLine()));
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Log all exceptions.
Chris@0:    *
Chris@0:    * @param \Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event
Chris@0:    *   The event to process.
Chris@0:    */
Chris@0:   public function onException(GetResponseForExceptionEvent $event) {
Chris@0:     $exception = $event->getException();
Chris@0: 
Chris@0:     $method = 'onError';
Chris@0: 
Chris@0:     // Treat any non-HTTP exception as if it were one, so we log it the same.
Chris@0:     if ($exception instanceof HttpExceptionInterface) {
Chris@0:       $possible_method = 'on' . $exception->getStatusCode();
Chris@0:       if (method_exists($this, $possible_method)) {
Chris@0:         $method = $possible_method;
Chris@0:       }
Chris@0:     }
Chris@0: 
Chris@0:     $this->$method($event);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public static function getSubscribedEvents() {
Chris@0:     $events[KernelEvents::EXCEPTION][] = ['onException', 50];
Chris@0:     return $events;
Chris@0:   }
Chris@0: 
Chris@0: }