public function MaintenanceModeSubscriber::onKernelRequestMaintenance in Drupal 8

Same name in this branch

1. 8 core/lib/Drupal/Core/EventSubscriber/MaintenanceModeSubscriber.php \Drupal\Core\EventSubscriber\MaintenanceModeSubscriber::onKernelRequestMaintenance()
2. 8 core/modules/user/src/EventSubscriber/MaintenanceModeSubscriber.php \Drupal\user\EventSubscriber\MaintenanceModeSubscriber::onKernelRequestMaintenance()

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/EventSubscriber/MaintenanceModeSubscriber.php \Drupal\Core\EventSubscriber\MaintenanceModeSubscriber::onKernelRequestMaintenance()

Returns the site maintenance page if the site is offline.

Parameters

\Symfony\Component\HttpKernel\Event\GetResponseEvent $event: The event to process.

File

core/lib/Drupal/Core/EventSubscriber/MaintenanceModeSubscriber.php, line 103

Class

MaintenanceModeSubscriber

Maintenance mode subscriber for controller requests.

Namespace

Drupal\Core\EventSubscriber

Code

public function onKernelRequestMaintenance(GetResponseEvent $event) {
  $request = $event
    ->getRequest();
  $route_match = RouteMatch::createFromRequest($request);
  if ($this->maintenanceMode
    ->applies($route_match)) {

    // Don't cache maintenance mode pages.
    \Drupal::service('page_cache_kill_switch')
      ->trigger();
    if (!$this->maintenanceMode
      ->exempt($this->account)) {

      // Deliver the 503 page if the site is in maintenance mode and the
      // logged in user is not allowed to bypass it.
      // If the request format is not 'html' then show default maintenance
      // mode page else show a text/plain page with maintenance message.
      if ($request
        ->getRequestFormat() !== 'html') {
        $response = new Response($this
          ->getSiteMaintenanceMessage(), 503, [
          'Content-Type' => 'text/plain',
        ]);
        $event
          ->setResponse($response);
        return;
      }
      drupal_maintenance_theme();
      $response = $this->bareHtmlPageRenderer
        ->renderBarePage([
        '#markup' => $this
          ->getSiteMaintenanceMessage(),
      ], $this
        ->t('Site under maintenance'), 'maintenance_page');
      $response
        ->setStatusCode(503);
      $event
        ->setResponse($response);
    }
    else {

      // Display a message if the logged in user has access to the site in
      // maintenance mode. However, suppress it on the maintenance mode
      // settings page.
      if ($route_match
        ->getRouteName() != 'system.site_maintenance_mode') {
        if ($this->account
          ->hasPermission('administer site configuration')) {
          $this->messenger
            ->addMessage($this
            ->t('Operating in maintenance mode. <a href=":url">Go online.</a>', [
            ':url' => $this->urlGenerator
              ->generate('system.site_maintenance_mode'),
          ]), 'status', FALSE);
        }
        else {
          $this->messenger
            ->addMessage($this
            ->t('Operating in maintenance mode.'), 'status', FALSE);
        }
      }
    }
  }
}