Version 1

[yaffs-website] / vendor / symfony / http-kernel / EventListener / ProfilerListener.php

diff --git a/vendor/symfony/http-kernel/EventListener/ProfilerListener.php b/vendor/symfony/http-kernel/EventListener/ProfilerListener.php
new file mode 100644 (file)
index 0000000..f73f325
--- /dev/null
+++ b/vendor/symfony/http-kernel/EventListener/ProfilerListener.php
@@ -0,0 +1,177 @@
+<?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\EventListener;
+
+use Symfony\Component\HttpKernel\Event\GetResponseEvent;
+use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
+use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
+use Symfony\Component\HttpKernel\Event\PostResponseEvent;
+use Symfony\Component\HttpKernel\KernelEvents;
+use Symfony\Component\HttpKernel\Profiler\Profiler;
+use Symfony\Component\HttpFoundation\RequestMatcherInterface;
+use Symfony\Component\HttpFoundation\RequestStack;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * ProfilerListener collects data for the current request by listening to the kernel events.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class ProfilerListener implements EventSubscriberInterface
+{
+    protected $profiler;
+    protected $matcher;
+    protected $onlyException;
+    protected $onlyMasterRequests;
+    protected $exception;
+    protected $requests = array();
+    protected $profiles;
+    protected $requestStack;
+    protected $parents;
+
+    /**
+     * Constructor.
+     *
+     * @param Profiler                     $profiler           A Profiler instance
+     * @param RequestStack                 $requestStack       A RequestStack instance
+     * @param RequestMatcherInterface|null $matcher            A RequestMatcher instance
+     * @param bool                         $onlyException      true if the profiler only collects data when an exception occurs, false otherwise
+     * @param bool                         $onlyMasterRequests true if the profiler only collects data when the request is a master request, false otherwise
+     */
+    public function __construct(Profiler $profiler, $requestStack = null, $matcher = null, $onlyException = false, $onlyMasterRequests = false)
+    {
+        if ($requestStack instanceof RequestMatcherInterface || (null !== $matcher && !$matcher instanceof RequestMatcherInterface) || $onlyMasterRequests instanceof RequestStack) {
+            $tmp = $onlyMasterRequests;
+            $onlyMasterRequests = $onlyException;
+            $onlyException = $matcher;
+            $matcher = $requestStack;
+            $requestStack = func_num_args() < 5 ? null : $tmp;
+
+            @trigger_error('The '.__METHOD__.' method now requires a RequestStack to be given as second argument as '.__CLASS__.'::onKernelRequest method will be removed in 3.0.', E_USER_DEPRECATED);
+        } elseif (!$requestStack instanceof RequestStack) {
+            @trigger_error('The '.__METHOD__.' method now requires a RequestStack instance as '.__CLASS__.'::onKernelRequest method will be removed in 3.0.', E_USER_DEPRECATED);
+        }
+
+        if (null !== $requestStack && !$requestStack instanceof RequestStack) {
+            throw new \InvalidArgumentException('RequestStack instance expected.');
+        }
+        if (null !== $matcher && !$matcher instanceof RequestMatcherInterface) {
+            throw new \InvalidArgumentException('Matcher must implement RequestMatcherInterface.');
+        }
+
+        $this->profiler = $profiler;
+        $this->matcher = $matcher;
+        $this->onlyException = (bool) $onlyException;
+        $this->onlyMasterRequests = (bool) $onlyMasterRequests;
+        $this->profiles = new \SplObjectStorage();
+        $this->parents = new \SplObjectStorage();
+        $this->requestStack = $requestStack;
+    }
+
+    /**
+     * Handles the onKernelException event.
+     *
+     * @param GetResponseForExceptionEvent $event A GetResponseForExceptionEvent instance
+     */
+    public function onKernelException(GetResponseForExceptionEvent $event)
+    {
+        if ($this->onlyMasterRequests && !$event->isMasterRequest()) {
+            return;
+        }
+
+        $this->exception = $event->getException();
+    }
+
+    /**
+     * @deprecated since version 2.4, to be removed in 3.0.
+     */
+    public function onKernelRequest(GetResponseEvent $event)
+    {
+        if (null === $this->requestStack) {
+            $this->requests[] = $event->getRequest();
+        }
+    }
+
+    /**
+     * Handles the onKernelResponse event.
+     *
+     * @param FilterResponseEvent $event A FilterResponseEvent instance
+     */
+    public function onKernelResponse(FilterResponseEvent $event)
+    {
+        $master = $event->isMasterRequest();
+        if ($this->onlyMasterRequests && !$master) {
+            return;
+        }
+
+        if ($this->onlyException && null === $this->exception) {
+            return;
+        }
+
+        $request = $event->getRequest();
+        $exception = $this->exception;
+        $this->exception = null;
+
+        if (null !== $this->matcher && !$this->matcher->matches($request)) {
+            return;
+        }
+
+        if (!$profile = $this->profiler->collect($request, $event->getResponse(), $exception)) {
+            return;
+        }
+
+        $this->profiles[$request] = $profile;
+
+        if (null !== $this->requestStack) {
+            $this->parents[$request] = $this->requestStack->getParentRequest();
+        } elseif (!$master) {
+            // to be removed when requestStack is required
+            array_pop($this->requests);
+
+            $this->parents[$request] = end($this->requests);
+        }
+    }
+
+    public function onKernelTerminate(PostResponseEvent $event)
+    {
+        // attach children to parents
+        foreach ($this->profiles as $request) {
+            // isset call should be removed when requestStack is required
+            if (isset($this->parents[$request]) && null !== $parentRequest = $this->parents[$request]) {
+                if (isset($this->profiles[$parentRequest])) {
+                    $this->profiles[$parentRequest]->addChild($this->profiles[$request]);
+                }
+            }
+        }
+
+        // save profiles
+        foreach ($this->profiles as $request) {
+            $this->profiler->saveProfile($this->profiles[$request]);
+        }
+
+        $this->profiles = new \SplObjectStorage();
+        $this->parents = new \SplObjectStorage();
+        $this->requests = array();
+    }
+
+    public static function getSubscribedEvents()
+    {
+        return array(
+            // kernel.request must be registered as early as possible to not break
+            // when an exception is thrown in any other kernel.request listener
+            KernelEvents::REQUEST => array('onKernelRequest', 1024),
+            KernelEvents::RESPONSE => array('onKernelResponse', -100),
+            KernelEvents::EXCEPTION => 'onKernelException',
+            KernelEvents::TERMINATE => array('onKernelTerminate', -1024),
+        );
+    }
+}