ContainerAwareHttpKernel.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Symfony\Component\HttpKernel\DependencyInjection;

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\HttpKernelInterface;
use Symfony\Component\HttpKernel\HttpKernel;
use Symfony\Component\HttpKernel\Controller\ControllerResolverInterface;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\DependencyInjection\Scope;

/**
 * Adds a managed request scope.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class ContainerAwareHttpKernel extends HttpKernel {
  protected $container;

  /**
   * Constructor.
   *
   * @param EventDispatcherInterface    $dispatcher         An EventDispatcherInterface instance
   * @param ContainerInterface          $container          A ContainerInterface instance
   * @param ControllerResolverInterface $controllerResolver A ControllerResolverInterface instance
   */
  public function __construct(EventDispatcherInterface $dispatcher, ContainerInterface $container, ControllerResolverInterface $controllerResolver) {
    parent::__construct($dispatcher, $controllerResolver);
    $this->container = $container;

    // the request scope might have been created before (see FrameworkBundle)
    if (!$container
      ->hasScope('request')) {
      $container
        ->addScope(new Scope('request'));
    }
  }

  /**
   * {@inheritdoc}
   */
  public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQUEST, $catch = true) {
    $request->headers
      ->set('X-Php-Ob-Level', ob_get_level());
    $this->container
      ->enterScope('request');
    $this->container
      ->set('request', $request, 'request');
    try {
      $response = parent::handle($request, $type, $catch);
    } catch (\Exception $e) {
      $this->container
        ->set('request', null, 'request');
      $this->container
        ->leaveScope('request');
      throw $e;
    }
    $this->container
      ->set('request', null, 'request');
    $this->container
      ->leaveScope('request');
    return $response;
  }

}