diff core/lib/Drupal/Core/EventSubscriber/ExceptionLoggingSubscriber.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/EventSubscriber/ExceptionLoggingSubscriber.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,103 @@
+<?php
+
+namespace Drupal\Core\EventSubscriber;
+
+use Drupal\Core\Logger\LoggerChannelFactoryInterface;
+use Drupal\Core\Utility\Error;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
+use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface;
+use Symfony\Component\HttpKernel\KernelEvents;
+
+/**
+ * Log exceptions without further handling.
+ */
+class ExceptionLoggingSubscriber implements EventSubscriberInterface {
+
+  /**
+   * The logger channel factory.
+   *
+   * @var \Drupal\Core\Logger\LoggerChannelFactoryInterface
+   */
+  protected $logger;
+
+  /**
+   * Constructs a new ExceptionLoggingSubscriber.
+   *
+   * @param \Drupal\Core\Logger\LoggerChannelFactoryInterface $logger
+   *   The logger channel factory.
+   */
+  public function __construct(LoggerChannelFactoryInterface $logger) {
+    $this->logger = $logger;
+  }
+
+  /**
+   * Log 403 errors.
+   *
+   * @param \Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event
+   *   The event to process.
+   */
+  public function on403(GetResponseForExceptionEvent $event) {
+    $request = $event->getRequest();
+    $this->logger->get('access denied')->warning('@uri', ['@uri' => $request->getRequestUri()]);
+  }
+
+  /**
+   * Log 404 errors.
+   *
+   * @param \Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event
+   *   The event to process.
+   */
+  public function on404(GetResponseForExceptionEvent $event) {
+    $request = $event->getRequest();
+    $this->logger->get('page not found')->warning('@uri', ['@uri' => $request->getRequestUri()]);
+  }
+
+  /**
+   * Log not-otherwise-specified errors, including HTTP 500.
+   *
+   * @param \Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event
+   *   The event to process.
+   */
+  public function onError(GetResponseForExceptionEvent $event) {
+    $exception = $event->getException();
+    $error = Error::decodeException($exception);
+    $this->logger->get('php')->log($error['severity_level'], '%type: @message in %function (line %line of %file).', $error);
+
+    $is_critical = !$exception instanceof HttpExceptionInterface || $exception->getStatusCode() >= 500;
+    if ($is_critical) {
+      error_log(sprintf('Uncaught PHP Exception %s: "%s" at %s line %s', get_class($exception), $exception->getMessage(), $exception->getFile(), $exception->getLine()));
+    }
+  }
+
+  /**
+   * Log all exceptions.
+   *
+   * @param \Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent $event
+   *   The event to process.
+   */
+  public function onException(GetResponseForExceptionEvent $event) {
+    $exception = $event->getException();
+
+    $method = 'onError';
+
+    // Treat any non-HTTP exception as if it were one, so we log it the same.
+    if ($exception instanceof HttpExceptionInterface) {
+      $possible_method = 'on' . $exception->getStatusCode();
+      if (method_exists($this, $possible_method)) {
+        $method = $possible_method;
+      }
+    }
+
+    $this->$method($event);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    $events[KernelEvents::EXCEPTION][] = ['onException', 50];
+    return $events;
+  }
+
+}