[SoapBundle] Enhanced exception management with Symfony2

composer.json

@@ -25,6 +25,7 @@
         "ext-curl": "*",
         "ass/xmlsecurity": "~1.0",
         "symfony/framework-bundle": "~2.0",
+        "symfony/twig-bundle": "~2.0",
         "zendframework/zend-mail": "2.1.*",
         "zendframework/zend-mime": "2.1.*",
         "zendframework/zend-soap": "2.1.*"

src/BeSimple/SoapBundle/Controller/SoapWebServiceController.php

@@ -12,14 +12,18 @@
 
 namespace BeSimple\SoapBundle\Controller;
 
+use BeSimple\SoapBundle\Handler\ExceptionHandler;
 use BeSimple\SoapBundle\Soap\SoapRequest;
 use BeSimple\SoapBundle\Soap\SoapResponse;
 use BeSimple\SoapServer\Exception as SoapException;
 
 use Symfony\Component\DependencyInjection\ContainerAware;
+use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\Exception\FlattenException;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
+use Symfony\Component\HttpKernel\Log\DebugLoggerInterface;
 
 /**
  * @author Christian Kerl <christian-kerl@web.de>
@@ -100,6 +104,46 @@ class SoapWebServiceController extends ContainerAware
         return $response;
     }
 
+    /**
+     * Converts an Exception to a SoapFault Response.
+     *
+     * @param Request              $request   The request
+     * @param FlattenException     $exception A FlattenException instance
+     * @param DebugLoggerInterface $logger    A DebugLoggerInterface instance
+     *
+     * @return Response
+     *
+     * @throws \LogicException When the request query parameter "_besimple_soap_webservice" does not exist
+     */
+    public function exceptionAction(Request $request, FlattenException $exception, DebugLoggerInterface $logger = null)
+    {
+        if (!$webservice = $request->query->get('_besimple_soap_webservice')) {
+            throw new \LogicException(sprintf('The parameter "%s" is required in Request::$query parameter bag to generate the SoapFault.', '_besimple_soap_webservice'), null, $e);
+        }
+
+        $view = 'TwigBundle:Exception:'.($this->container->get('kernel')->isDebug() ? 'exception' : 'error').'.txt.twig';
+        $code = $exception->getStatusCode();
+        $details = $this->container->get('templating')->render($view, array(
+            'status_code' => $code,
+            'status_text' => isset(Response::$statusTexts[$code]) ? Response::$statusTexts[$code] : '',
+            'exception'   => $exception,
+            'logger'      => $logger,
+        ));
+
+        $server = $this
+            ->container
+            ->get(sprintf('besimple.soap.context.%s', $webservice))
+            ->getServerBuilder()
+            ->withHandler(new ExceptionHandler($exception, $details))
+            ->build()
+        ;
+
+        ob_start();
+        $server->handle($request->getContent());
+
+        return new Response(ob_get_clean());
+    }
+
     /**
      * This method gets called once for every SOAP header the \SoapServer received
      * and afterwards once for the called SOAP operation.
@@ -125,13 +169,7 @@ class SoapWebServiceController extends ContainerAware
             );
 
             // forward to controller
-            try {
             $response = $this->container->get('http_kernel')->handle($this->soapRequest, HttpKernelInterface::SUB_REQUEST, false);
-            } catch (\Exception $e) {
-                $this->soapResponse = new Response(null, 500);
-
-                throw $e instanceof \SoapFault || $this->container->getParameter('kernel.debug') ? $e : new SoapException\ReceiverSoapFault($e->getMessage());
-            }
 
             $this->setResponse($response);
 

src/BeSimple/SoapBundle/DependencyInjection/BeSimpleSoapExtension.php

@@ -63,6 +63,8 @@ class BeSimpleSoapExtension extends Extension
             $serviceConfig['name'] = $name;
             $this->createWebServiceContext($serviceConfig, $container);
         }
+
+        $container->setParameter('besimple.soap.exception_listener.controller', $config['exception_controller']);
     }
 
     private function registerCacheConfiguration(array $config, ContainerBuilder $container, XmlFileLoader $loader)

src/BeSimple/SoapBundle/DependencyInjection/Configuration.php

@@ -40,6 +40,12 @@ class Configuration
         $this->addServicesSection($rootNode);
         $this->addWsdlDumperSection($rootNode);
 
+        $rootNode
+            ->children()
+                ->scalarNode('exception_controller')->defaultValue('BeSimpleSoapBundle:SoapWebService:exception')->end()
+            ->end()
+        ;
+
         return $treeBuilder->buildTree();
     }
 

src/BeSimple/SoapBundle/EventListener/SoapExceptionListener.php

@@ -0,0 +1,79 @@
+<?php
+
+/*
+ * This file is part of the BeSimpleSoapBundle.
+ *
+ * (c) Christian Kerl <christian-kerl@web.de>
+ * (c) Francis Besset <francis.besset@gmail.com>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace BeSimple\SoapBundle\EventListener;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
+use Symfony\Component\HttpKernel\EventListener\ExceptionListener;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+use Symfony\Component\HttpKernel\KernelEvents;
+
+/**
+ * @author Francis Besset <francis.besset@gmail.com>
+ */
+class SoapExceptionListener extends ExceptionListener
+{
+    /**
+     * @var ContainerInterface
+     */
+    protected $container;
+
+    /**
+     * To avoid conflict between , the logger param is not typed:
+     *  The parent class needs and instance of `Psr\Log\LoggerInterface` from Symfony 2.2,
+     *  before logger is an instance of `Symfony\Component\HttpKernel\Log\LoggerInterface`.
+     *
+     * @param ContainerInterface $container  A ContainerInterface instance
+     * @param string             $controller The controller name to call
+     * @param LoggerInterface    $logger     A logger instance
+     */
+    public function __construct(ContainerInterface $container, $controller, $logger)
+    {
+        parent::__construct($controller, $logger);
+
+        $this->container = $container;
+    }
+
+    public function onKernelException(GetResponseForExceptionEvent $event)
+    {
+        if (HttpKernelInterface::MASTER_REQUEST !== $event->getRequestType()) {
+            return;
+        }
+
+        $request = $event->getRequest();
+        if ('soap' !== $request->getRequestFormat()) {
+            return;
+        }
+
+        $attributes = $request->attributes;
+        if (!$webservice = $attributes->get('webservice')) {
+            return;
+        }
+
+        if (!$this->container->has(sprintf('besimple.soap.context.%s', $webservice))) {
+            return;
+        }
+
+        // hack to retrieve the current WebService name in the controller
+        $request->query->set('_besimple_soap_webservice', $webservice);
+
+        parent::onKernelException($event);
+    }
+
+    public static function getSubscribedEvents()
+    {
+        return array(
+            KernelEvents::EXCEPTION => array('onKernelException', -64),
+        );
+    }
+}

src/BeSimple/SoapBundle/Handler/ExceptionHandler.php

@@ -0,0 +1,43 @@
+<?php
+
+/*
+ * This file is part of the BeSimpleSoapBundle.
+ *
+ * (c) Christian Kerl <christian-kerl@web.de>
+ * (c) Francis Besset <francis.besset@gmail.com>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace BeSimple\SoapBundle\Handler;
+
+use BeSimple\SoapServer\Exception\ReceiverSoapFault;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\Exception\FlattenException;
+
+/**
+ * @author Francis Besset <francis.besset@gmail.com>
+ */
+class ExceptionHandler
+{
+    protected $exception;
+    protected $details;
+
+    public function __construct(FlattenException $exception, $details = null)
+    {
+        $this->exception = $exception;
+        $this->details = $details;
+    }
+
+    public function __call($method, $arguments)
+    {
+        $code = $this->exception->getStatusCode();
+
+        throw new ReceiverSoapFault(
+            isset(Response::$statusTexts[$code]) ? Response::$statusTexts[$code] : '',
+            null,
+            $this->details
+        );
+    }
+}

src/BeSimple/SoapBundle/Resources/config/webservice.xml

@@ -6,6 +6,7 @@
     <parameters>
         <parameter key="besimple.soap.response.class">BeSimple\SoapBundle\Soap\SoapResponse</parameter>
         <parameter key="besimple.soap.response.listener.class">BeSimple\SoapBundle\EventListener\SoapResponseListener</parameter>
+        <parameter key="besimple.soap.exception_listener.class">BeSimple\SoapBundle\EventListener\SoapExceptionListener</parameter>
         <parameter key="besimple.soap.context.class">BeSimple\SoapBundle\WebServiceContext</parameter>
         <parameter key="besimple.soap.binder.request_header.rpcliteral.class">BeSimple\SoapBundle\ServiceBinding\RpcLiteralRequestHeaderMessageBinder</parameter>
         <parameter key="besimple.soap.binder.request.rpcliteral.class">BeSimple\SoapBundle\ServiceBinding\RpcLiteralRequestMessageBinder</parameter>
@@ -25,6 +26,14 @@
             <argument type="service" id="besimple.soap.response" />
         </service>
 
+        <service id="besimple.soap.exception_listener" class="%besimple.soap.exception_listener.class%">
+            <tag name="kernel.event_subscriber" />
+            <tag name="monolog.logger" channel="request" />
+            <argument type="service" id="service_container" />
+            <argument>%besimple.soap.exception_listener.controller%</argument>
+            <argument type="service" id="logger" on-invalid="null" />
+        </service>
+
         <service id="besimple.soap.context.rpcliteral" class="%besimple.soap.context.class%" abstract="true">
             <argument type="service" id="besimple.soap.definition.loader" />
             <argument type="service" id="besimple.soap.converter.collection" />

src/BeSimple/SoapBundle/composer.json

@@ -25,10 +25,11 @@
         "besimple/soap-common": "0.2.*",
         "besimple/soap-wsdl": "0.2.*",
         "ass/xmlsecurity": "~1.0",
+        "symfony/framework-bundle": "~2.0",
+        "symfony/twig-bundle": "~2.0",
         "zendframework/zend-mail": "2.1.*",
         "zendframework/zend-mime": "2.1.*",
-        "zendframework/zend-soap": "2.1.*",
+        "zendframework/zend-soap": "2.1.*"
-        "symfony/framework-bundle": "~2.0"
     },
     "suggest": {
         "besimple/soap-client": "0.2.*",