Chris@0: <?php
Chris@0: 
Chris@0: namespace Stack;
Chris@0: 
Chris@0: use Symfony\Component\HttpKernel\HttpKernelInterface;
Chris@0: use Symfony\Component\HttpKernel\TerminableInterface;
Chris@0: use Symfony\Component\HttpFoundation\Request;
Chris@0: use Symfony\Component\HttpFoundation\Response;
Chris@0: 
Chris@0: class StackedHttpKernel implements HttpKernelInterface, TerminableInterface
Chris@0: {
Chris@0:     private $app;
Chris@0:     private $middlewares = array();
Chris@0: 
Chris@0:     public function __construct(HttpKernelInterface $app, array $middlewares)
Chris@0:     {
Chris@0:         $this->app = $app;
Chris@0:         $this->middlewares = $middlewares;
Chris@0:     }
Chris@0: 
Chris@0:     public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQUEST, $catch = true)
Chris@0:     {
Chris@0:         return $this->app->handle($request, $type, $catch);
Chris@0:     }
Chris@0: 
Chris@0:     public function terminate(Request $request, Response $response)
Chris@0:     {
Chris@0:         $prevKernel = null;
Chris@0:         foreach ($this->middlewares as $kernel) {
Chris@0:             // if prev kernel was terminable we can assume this middleware has already been called
Chris@0:             if (!$prevKernel instanceof TerminableInterface && $kernel instanceof TerminableInterface) {
Chris@0:                 $kernel->terminate($request, $response);
Chris@0:             }
Chris@0:             $prevKernel = $kernel;
Chris@0:         }
Chris@0:     }
Chris@0: }