Turning Kernel as compilerpass

Author: mmoreram

AsyncKernel.php

@@ -16,13 +16,15 @@
 namespace Symfony\Component\HttpKernel;
 
 use React\Promise\PromiseInterface;
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpKernel\Exception\AsyncHttpKernelNeededException;
 
 /**
  * Class AsyncKernel.
  */
-abstract class AsyncKernel extends Kernel
+abstract class AsyncKernel extends Kernel implements CompilerPassInterface
 {
     /**
      * Handles a Request to convert it to a Response.
@@ -57,4 +59,18 @@ public function handleAsync(
             $catch
         );
     }
+
+    /**
+     * You can modify the container here before it is dumped to PHP code.
+     */
+    public function process(ContainerBuilder $container)
+    {
+        $container
+            ->getDefinition('event_dispatcher')
+            ->setClass(AsyncEventDispatcher::class);
+
+        $container
+            ->getDefinition('http_kernel')
+            ->setClass(AsyncHttpKernel::class);
+    }
 }

CompilerPass/AsyncHttpKernelCompilerPass.php

@@ -12,6 +12,7 @@
         "php": ">=7.1",
 
         "symfony/http-kernel": "^4.0",
+        "symfony/dependency-injection": "^4.0",
         "react/promise": "*"
     },
     "require-dev": {