src/EventSubscriber/MaintenanceSubscriber.php line 52

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  1. <?php
  3. namespace App\EventSubscriber;
  6. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  7. use Symfony\Component\HttpFoundation\Response;
  8. use Symfony\Component\HttpKernel\Event\RequestEvent;
  9. use Symfony\Component\HttpKernel\KernelEvents;
  10. use Twig\Environment;
  11. use Twig\Error\LoaderError;
  12. use Twig\Error\RuntimeError;
  13. use Twig\Error\SyntaxError;
  16. class MaintenanceSubscriber implements EventSubscriberInterface
  17. {
  18.     /**
  19.      * @var
  20.      */
  21.     private $maintenanceMode;
  22.     /**
  23.      * @var
  24.      */
  25.     private $maintenanceAuthorizedIp;
  26.     /**
  27.      * @var
  28.      */
  29.     private $twig;
  31.     /**
  32.      * MaintenanceListener constructor.
  33.      * @param $maintenanceMode
  34.      * @param $maintenanceAuthorizedIp
  35.      * @param $templating
  36.      */
  37.     public function __construct(Environment $twig)
  38.     {
  39.         $this->maintenanceMode = $_ENV['MAINTENANCE_MODE'];
  40.         $this->maintenanceAuthorizedIp = [$_ENV['IP_AUTHORIZED']];
  41.         $this->twig = $twig;
  42.     }
  45.     /**
  46.      * @param RequestEvent $event
  47.      * @return void
  48.      * @throws LoaderError
  49.      * @throws RuntimeError
  50.      * @throws SyntaxError
  51.      */
  52.     public function onKernelRequest(RequestEvent $event)
  53.     {
  55.         if (!$event->isMainRequest()) {
  56.             // don't do anything if it's not the master request
  57.             return;
  58.         }
  60.         if ($this->maintenanceMode === 'false')
  61.         {
  62.             return;
  63.         }
  65.         if (in_array($event->getRequest()->getClientIp(), $this->maintenanceAuthorizedIp))
  66.         {
  67.             return;
  68.         }
  71.         $maintenanceView = $this->twig->render(
  72.             'maintenance/index.html.twig'
  73.         );
  75.         $response = new Response(
  76.             $maintenanceView,
  77.             Response::HTTP_OK,
  78.             array('content-type' => 'text/html')
  79.         );
  81.         $event->setResponse(new Response($response->getContent()));
  83.     }
  87.     public static function getSubscribedEvents()
  88.     {
  89.         return [
  90.             KernelEvents::REQUEST=> [
  91.                 ['onKernelRequest',20]
  92.             ],
  93.         ];
  94.     }
  96. }