Issue #2303673 by dawehner, damiankloip, effulgentsia, Fabianx: Implement...

Issue #2303673 by dawehner, damiankloip, effulgentsia, Fabianx: Implement stackphp; cleanup handlePageCache() and preHandle()

composer.json

@@ -26,7 +26,8 @@
     "phpunit/phpunit": "4.1.*",
     "phpunit/phpunit-mock-objects": "dev-master#e60bb929c50ae4237aaf680a4f6773f4ee17f0a2",
     "zendframework/zend-feed": "2.2.*",
-    "mikey179/vfsStream": "1.*"
+    "mikey179/vfsStream": "1.*",
+    "stack/builder": "1.0.*"
   },
   "autoload": {
     "psr-4": {

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "6a7a4ba69644c6cf110d03b1a5346e3e",
+    "hash": "8afb97667c2791fec2fb1fc43853da24",
     "packages": [
         {
             "name": "doctrine/annotations",
@@ -1413,6 +1413,56 @@
             "homepage": "https://github.com/sebastianbergmann/version",
             "time": "2014-03-07 15:35:33"
         },
+        {
+            "name": "stack/builder",
+            "version": "v1.0.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/stackphp/builder.git",
+                "reference": "b4af43e7b7f3f7fac919ff475b29f7c5dc7b23b7"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/stackphp/builder/zipball/b4af43e7b7f3f7fac919ff475b29f7c5dc7b23b7",
+                "reference": "b4af43e7b7f3f7fac919ff475b29f7c5dc7b23b7",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0",
+                "symfony/http-foundation": "~2.1",
+                "symfony/http-kernel": "~2.1"
+            },
+            "require-dev": {
+                "silex/silex": "~1.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "Stack": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Igor Wiedler",
+                    "email": "igor@wiedler.ch",
+                    "homepage": "http://wiedler.ch/igor/"
+                }
+            ],
+            "description": "Builder for stack middlewares based on HttpKernelInterface.",
+            "keywords": [
+                "stack"
+            ],
+            "time": "2014-01-28 19:42:24"
+        },
         {
             "name": "symfony-cmf/routing",
             "version": "1.2.0",

core/core.services.yml

@@ -370,8 +370,30 @@ services:
     class: Drupal\Core\Controller\TitleResolver
     arguments: ['@controller_resolver', '@string_translation']
   http_kernel:
+    class: Symfony\Component\HttpKernel\HttpKernel
+    factory_method: resolve
+    factory_service: http_kernel_factory
+    arguments: ['@http_kernel.basic']
+  http_kernel_factory:
+    class: Stack\Builder
+  http_kernel.basic:
     class: Symfony\Component\HttpKernel\HttpKernel
     arguments: ['@event_dispatcher', '@controller_resolver', '@request_stack']
+  http_middleware.reverse_proxy:
+    class: Drupal\Core\StackMiddleware\ReverseProxyMiddleware
+    arguments: ['@settings']
+    tags:
+      - { name: http_middleware, priority: 300 }
+  http_middleware.page_cache:
+    class: Drupal\Core\StackMiddleware\PageCache
+    arguments: ['@kernel']
+    tags:
+      - { name: http_middleware, priority: 200 }
+  http_middleware.kernel_pre_handle:
+    class: Drupal\Core\StackMiddleware\KernelPreHandle
+    arguments: ['@kernel']
+    tags:
+      - { name: http_middleware, priority: 100 }
   language_manager:
     class: Drupal\Core\Language\LanguageManager
     arguments: ['@language.default']
@@ -560,11 +582,6 @@ services:
     tags:
       - { name: event_subscriber }
     arguments: ['@resolver_manager.entity']
-  reverse_proxy_subscriber:
-    class: Drupal\Core\EventSubscriber\ReverseProxySubscriber
-    tags:
-      - { name: event_subscriber }
-    arguments: ['@settings']
   ajax_subscriber:
     class: Drupal\Core\EventSubscriber\AjaxSubscriber
     tags:

core/lib/Drupal/Core/Authentication/AuthenticationManager.php

@@ -183,7 +183,7 @@ public function handleException(GetResponseForExceptionEvent $event) {
     $active_providers = ($route && $route->getOption('_auth')) ? $route->getOption('_auth') : array($this->defaultProviderId());
 
     // Get the sorted list of active providers for the given route.
-    $providers = array_intersect($active_providers, array_keys($this->providers));
+    $providers = array_intersect($active_providers, array_keys($this->getSortedProviders()));
 
     foreach ($providers as $provider_id) {
       if ($this->providers[$provider_id]->handleException($event) == TRUE) {

core/lib/Drupal/Core/CoreServiceProvider.php

@@ -10,6 +10,7 @@
 use Drupal\Core\Cache\CacheContextsPass;
 use Drupal\Core\Cache\ListCacheBinsPass;
 use Drupal\Core\DependencyInjection\Compiler\BackendCompilerPass;
+use Drupal\Core\DependencyInjection\Compiler\StackedKernelPass;
 use Drupal\Core\DependencyInjection\ServiceProviderInterface;
 use Drupal\Core\DependencyInjection\ContainerBuilder;
 use Drupal\Core\DependencyInjection\Compiler\ModifyServiceDefinitionsPass;
@@ -50,6 +51,8 @@ public function register(ContainerBuilder $container) {
 
     $container->addCompilerPass(new BackendCompilerPass());
 
+    $container->addCompilerPass(new StackedKernelPass());
+
     // Collect tagged handler services as method calls on consumer services.
     $container->addCompilerPass(new TaggedHandlersPass());
 

core/lib/Drupal/Core/DependencyInjection/Compiler/StackedKernelPass.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\DependencyInjection\Compiler\StackedKernelPass.
+ */
+
+namespace Drupal\Core\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+/**
+ * Provides a compiler pass for stacked HTTP kernels.
+ *
+ * @see \Stack\Builder
+ */
+class StackedKernelPass implements CompilerPassInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function process(ContainerBuilder $container) {
+    if (!$container->hasDefinition('http_kernel_factory')) {
+      return;
+    }
+
+    $http_kernel_factory = $container->getDefinition('http_kernel_factory');
+    $middleware_priorities = array();
+    $middleware_arguments = array();
+    foreach ($container->findTaggedServiceIds('http_middleware') as $id => $attributes) {
+      $priority = isset($attributes[0]['priority']) ? $attributes[0]['priority'] : 0;
+      $middleware_priorities[$id] = $priority;
+      $definition = $container->getDefinition($id);
+      $middleware_arguments[$id] = $definition->getArguments();
+      array_unshift($middleware_arguments[$id], $definition->getClass());
+    }
+    array_multisort($middleware_priorities, SORT_DESC, $middleware_arguments, SORT_DESC);
+
+    foreach ($middleware_arguments as $id => $push_arguments) {
+      $http_kernel_factory->addMethodCall('push', $push_arguments);
+    }
+  }
+
+}

core/lib/Drupal/Core/DrupalKernel.php

@@ -418,12 +418,9 @@ public function getContainer() {
   }
 
   /**
-   * Helper method that does request related initialization.
-   *
-   * @param \Symfony\Component\HttpFoundation\Request $request
-   *   The current request.
+   * {@inheritdoc}
    */
-  protected function preHandle(Request $request) {
+  public function preHandle(Request $request) {
     // Load all enabled modules.
     $this->container->get('module_handler')->loadAll();
 
@@ -568,7 +565,6 @@ public function terminate(Request $request, Response $response) {
    */
   public function handle(Request $request, $type = self::MASTER_REQUEST, $catch = TRUE) {
     $this->boot();
-    $this->preHandle($request);
     return $this->getHttpKernel()->handle($request, $type, $catch);
   }
 

core/lib/Drupal/Core/DrupalKernelInterface.php

@@ -108,4 +108,12 @@ public function handlePageCache(Request $request);
    */
   public function prepareLegacyRequest(Request $request);
 
+  /**
+   * Helper method that does request related initialization.
+   *
+   * @param \Symfony\Component\HttpFoundation\Request $request
+   *   The current request.
+   */
+  public function preHandle(Request $request);
+
 }

core/lib/Drupal/Core/EventSubscriber/ReverseProxySubscriber.php

-<?php
-
-/**
- * @file
- * Contains \Drupal\Core\EventSubscriber\ReverseProxySubscriber.
- */
-
-namespace Drupal\Core\EventSubscriber;
-
-use Drupal\Core\Site\Settings;
-use Symfony\Component\HttpKernel\KernelEvents;
-use Symfony\Component\HttpKernel\Event\GetResponseEvent;
-use Symfony\Component\EventDispatcher\EventSubscriberInterface;
-
-/**
- * Reverse proxy subscriber for controller requests.
- */
-class ReverseProxySubscriber implements EventSubscriberInterface {
-
-  /**
-   * A settings object.
-   *
-   * @var \Drupal\Core\Site\Settings
-   */
-  protected $settings;
-
-  /**
-   * Construct the ReverseProxySubscriber.
-   *
-   * @param \Drupal\Core\Site\Settings $settings
-   *   The read-only settings object of this request.
-   */
-  public function __construct(Settings $settings) {
-    $this->settings = $settings;
-  }
-
-  /**
-   * Passes reverse proxy settings to current request.
-   *
-   * @param \Symfony\Component\HttpKernel\Event\GetResponseEvent $event
-   *   The Event to process.
-   */
-  public function onKernelRequestReverseProxyCheck(GetResponseEvent $event) {
-    $request = $event->getRequest();
-    if ($this->settings->get('reverse_proxy', 0)) {
-      $reverse_proxy_header = $this->settings->get('reverse_proxy_header', 'HTTP_X_FORWARDED_FOR');
-      $request::setTrustedHeaderName($request::HEADER_CLIENT_IP, $reverse_proxy_header);
-      $reverse_proxy_addresses = $this->settings->get('reverse_proxy_addresses', array());
-      $request::setTrustedProxies($reverse_proxy_addresses);
-    }
-  }
-
-  /**
-   * Registers the methods in this class that should be listeners.
-   *
-   * @return array
-   *   An array of event listener definitions.
-   */
-  static function getSubscribedEvents() {
-    $events[KernelEvents::REQUEST][] = array('onKernelRequestReverseProxyCheck', 10);
-    return $events;
-  }
-}

core/lib/Drupal/Core/Form/FormBuilder.php

@@ -22,7 +22,6 @@
 use Symfony\Component\HttpFoundation\RequestStack;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
-use Symfony\Component\HttpKernel\HttpKernel;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
 use Symfony\Component\HttpKernel\KernelEvents;
 
@@ -127,10 +126,10 @@ class FormBuilder implements FormBuilderInterface, FormValidatorInterface, FormS
    *   The theme manager.
    * @param \Drupal\Core\Access\CsrfTokenGenerator $csrf_token
    *   The CSRF token generator.
-   * @param \Symfony\Component\HttpKernel\HttpKernel $http_kernel
+   * @param \Symfony\Component\HttpKernel\HttpKernelInterface $http_kernel
    *   The HTTP kernel.
    */
-  public function __construct(FormValidatorInterface $form_validator, FormSubmitterInterface $form_submitter, FormCacheInterface $form_cache, ModuleHandlerInterface $module_handler, EventDispatcherInterface $event_dispatcher, RequestStack $request_stack, ClassResolverInterface $class_resolver, ThemeManagerInterface $theme_manager, CsrfTokenGenerator $csrf_token = NULL, HttpKernel $http_kernel = NULL) {
+  public function __construct(FormValidatorInterface $form_validator, FormSubmitterInterface $form_submitter, FormCacheInterface $form_cache, ModuleHandlerInterface $module_handler, EventDispatcherInterface $event_dispatcher, RequestStack $request_stack, ClassResolverInterface $class_resolver, ThemeManagerInterface $theme_manager, CsrfTokenGenerator $csrf_token = NULL, HttpKernelInterface $http_kernel = NULL) {
     $this->formValidator = $form_validator;
     $this->formSubmitter = $form_submitter;
     $this->formCache = $form_cache;

core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\StackMiddleware\KernelBoot.
+ */
+
+namespace Drupal\Core\StackMiddleware;
+
+use Drupal\Core\DrupalKernelInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+
+/**
+ * Prepares the environment after page caching ran.
+ */
+class KernelPreHandle implements HttpKernelInterface {
+
+  /**
+   * The wrapped HTTP kernel.
+   *
+   * @var \Symfony\Component\HttpKernel\HttpKernelInterface
+   */
+  protected $httpKernel;
+
+  /**
+   * The main Drupal kernel.
+   *
+   * @var \Drupal\Core\DrupalKernelInterface
+   */
+  protected $drupalKernel;
+
+  /**
+   * Constructs a new KernelPreHandle instance.
+   *
+   * @param \Symfony\Component\HttpKernel\HttpKernelInterface $http_kernel
+   *   The wrapped HTTP kernel.
+   *
+   * @param \Drupal\Core\DrupalKernelInterface $drupal_kernel
+   *   The main Drupal kernel.
+   */
+  public function __construct(HttpKernelInterface $http_kernel, DrupalKernelInterface $drupal_kernel) {
+    $this->httpKernel = $http_kernel;
+    $this->drupalKernel = $drupal_kernel;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function handle(Request $request, $type = self::MASTER_REQUEST, $catch = TRUE) {
+    $this->drupalKernel->preHandle($request);
+
+    return $this->httpKernel->handle($request, $type, $catch);
+  }
+
+}
+

core/lib/Drupal/Core/StackMiddleware/PageCache.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\StackMiddleware\PageCache.
+ */
+
+namespace Drupal\Core\StackMiddleware;
+
+use Drupal\Core\DrupalKernelInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+
+/**
+ * Executes the page caching before the main kernel takes over the request.
+ */
+class PageCache implements HttpKernelInterface {
+
+  /**
+   * The wrapped HTTP kernel.
+   *
+   * @var \Symfony\Component\HttpKernel\HttpKernelInterface
+   */
+  protected $httpKernel;
+
+  /**
+   * The main Drupal kernel.
+   *
+   * @var \Drupal\Core\DrupalKernelInterface
+   */
+  protected $drupalKernel;
+
+  /**
+   * Constructs a ReverseProxyMiddleware object.
+   *
+   * @param \Symfony\Component\HttpKernel\HttpKernelInterface $http_kernel
+   *   The decorated kernel.
+   * @param \Drupal\Core\DrupalKernelInterface $drupal_kernel
+   *   The main Drupal kernel.
+   */
+  public function __construct(HttpKernelInterface $http_kernel, DrupalKernelInterface $drupal_kernel) {
+    $this->httpKernel = $http_kernel;
+    $this->drupalKernel = $drupal_kernel;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function handle(Request $request, $type = self::MASTER_REQUEST, $catch = TRUE) {
+    $this->drupalKernel->handlePageCache($request);
+
+    return $this->httpKernel->handle($request, $type, $catch);
+  }
+
+}

core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php

+<?php
+/**
+ * @file
+ * Contains \Drupal\Core\StackMiddleware\ReverseProxyMiddleware
+ */
+
+namespace Drupal\Core\StackMiddleware;
+
+use Drupal\Core\Site\Settings;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+
+/**
+ *
+ */
+class ReverseProxyMiddleware implements HttpKernelInterface {
+
+  /**
+   * The decorated kernel.
+   *
+   * @var \Symfony\Component\HttpKernel\HttpKernelInterface
+   */
+  protected $httpKernel;
+
+  /**
+   * The site settings.
+   *
+   * @var \Drupal\Core\Site\Settings
+   */
+  protected $settings;
+
+  /**
+   * Constructs a ReverseProxyMiddleware object.
+   *
+   * @param \Symfony\Component\HttpKernel\HttpKernelInterface $http_kernel
+   *   The decorated kernel.
+   * @param \Drupal\Core\Site\Settings $settings
+   *   The site settings.
+   */
+  public function __construct(HttpKernelInterface $http_kernel, Settings $settings) {
+    $this->httpKernel = $http_kernel;
+    $this->settings = $settings;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function handle(Request $request, $type = self::MASTER_REQUEST, $catch = TRUE) {
+    // Initialize proxy settings.
+    if ($this->settings->get('reverse_proxy', FALSE)) {
+      $reverse_proxy_header = $this->settings->get('reverse_proxy_header', 'X_FORWARDED_FOR');
+      $request::setTrustedHeaderName($request::HEADER_CLIENT_IP, $reverse_proxy_header);
+      $proxies = $this->settings->get('reverse_proxy_addresses', array());
+      if (count($proxies) > 0) {
+        $request::setTrustedProxies($proxies);
+      }
+    }
+    return $this->httpKernel->handle($request, $type, $catch);
+  }
+
+}

core/modules/system/src/Tests/HttpKernel/StackKernelIntegrationTest.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\system\Tests\HttpKernel\StackKernelIntegrationTest.
+ */
+
+namespace Drupal\system\Tests\HttpKernel;
+
+use Drupal\simpletest\KernelTestBase;
+use Symfony\Component\HttpFoundation\Request;
+
+/**
+ * Tests the stacked kernel functionality.
+ *
+ * @group Routing.
+ */
+class StackKernelIntegrationTest extends KernelTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = array('httpkernel_test', 'system');
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    $this->installSchema('system', 'router');
+  }
+
+  /**
+   * Tests a request.
+   */
+  public function testRequest() {
+    $request = new Request();
+    /** @var \Symfony\Component\HttpKernel\HttpKernelInterface $http_kernel */
+    $http_kernel = \Drupal::service('http_kernel');
+    $http_kernel->handle($request);
+
+    $this->assertEqual($request->attributes->get('_hello'), 'world');
+    $this->assertEqual($request->attributes->get('_previous_optional_argument'), 'test_argument');
+  }
+
+}
+

core/modules/system/tests/modules/httpkernel_test/httpkernel_test.info.yml

+name: 'HttpKernel test'
+type: module
+description: 'Support module for httpkernel tests.'
+package: Testing
+version: VERSION
+core: 8.x

core/modules/system/tests/modules/httpkernel_test/httpkernel_test.services.yml

+services:
+  httpkernel_test.test_middleware:
+    class: Drupal\httpkernel_test\HttpKernel\TestMiddleware
+    tags:
+      - { name: http_middleware }
+  httpkernel_test.test_middleware2:
+    class: Drupal\httpkernel_test\HttpKernel\TestMiddleware
+    arguments: ['test_argument']
+    tags:
+      - { name: http_middleware, priority: 20 }

core/modules/system/tests/modules/httpkernel_test/src/HttpKernel/TestMiddleware.php

+<?php
+
+/**
+ * @file
+ * Contains \Drupal\httpkernel_test\HttpKernel\TestMiddleware.
+ */
+
+namespace Drupal\httpkernel_test\HttpKernel;
+
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+
+/**
+ * Provides a test middleware.
+ */
+class TestMiddleware implements HttpKernelInterface {
+
+ /**
+  * The decorated kernel.
+  *
+  * @var \Symfony\Component\HttpKernel\HttpKernelInterface
+  */
+ protected $kernel;
+
+  /**
+   * An optional argument.
+   *
+   * @var mixed
+   */
+  protected $optionalArgument;
+
+  /**
+   * Constructs a new TestMiddleware object.
+   *
+   * @param \Symfony\Component\HttpKernel\HttpKernelInterface $kernel