vendor/symfony/http-kernel/EventListener/ProfilerListener.php line 108
<?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\EventDispatcher\EventSubscriberInterface;use Symfony\Component\HttpFoundation\Request;use Symfony\Component\HttpFoundation\RequestMatcherInterface;use Symfony\Component\HttpFoundation\RequestStack;use Symfony\Component\HttpFoundation\Session\Session;use Symfony\Component\HttpKernel\Event\ExceptionEvent;use Symfony\Component\HttpKernel\Event\ResponseEvent;use Symfony\Component\HttpKernel\Event\TerminateEvent;use Symfony\Component\HttpKernel\KernelEvents;use Symfony\Component\HttpKernel\Profiler\Profile;use Symfony\Component\HttpKernel\Profiler\Profiler;/*** ProfilerListener collects data for the current request by listening to the kernel events.** @author Fabien Potencier <fabien@symfony.com>** @final*/class ProfilerListener implements EventSubscriberInterface{private Profiler $profiler;private ?RequestMatcherInterface $matcher;private bool $onlyException;private bool $onlyMainRequests;private ?\Throwable $exception = null;/** @var \SplObjectStorage<Request, Profile> */private \SplObjectStorage $profiles;private RequestStack $requestStack;private ?string $collectParameter;/** @var \SplObjectStorage<Request, Request|null> */private \SplObjectStorage $parents;/*** @param bool $onlyException True if the profiler only collects data when an exception occurs, false otherwise* @param bool $onlyMainRequests True if the profiler only collects data when the request is the main request, false otherwise*/public function __construct(Profiler $profiler, RequestStack $requestStack, RequestMatcherInterface $matcher = null, bool $onlyException = false, bool $onlyMainRequests = false, string $collectParameter = null){$this->profiler = $profiler;$this->matcher = $matcher;$this->onlyException = $onlyException;$this->onlyMainRequests = $onlyMainRequests;$this->profiles = new \SplObjectStorage();$this->parents = new \SplObjectStorage();$this->requestStack = $requestStack;$this->collectParameter = $collectParameter;}/*** Handles the onKernelException event.*/public function onKernelException(ExceptionEvent $event){if ($this->onlyMainRequests && !$event->isMainRequest()) {return;}$this->exception = $event->getThrowable();}/*** Handles the onKernelResponse event.*/public function onKernelResponse(ResponseEvent $event){if ($this->onlyMainRequests && !$event->isMainRequest()) {return;}if ($this->onlyException && null === $this->exception) {return;}$request = $event->getRequest();if (null !== $this->collectParameter && null !== $collectParameterValue = $request->get($this->collectParameter)) {true === $collectParameterValue || filter_var($collectParameterValue, \FILTER_VALIDATE_BOOL) ? $this->profiler->enable() : $this->profiler->disable();}$exception = $this->exception;$this->exception = null;if (null !== $this->matcher && !$this->matcher->matches($request)) {return;}$session = $request->hasPreviousSession() ? $request->getSession() : null;if ($session instanceof Session) {$usageIndexValue = $usageIndexReference = &$session->getUsageIndex();$usageIndexReference = \PHP_INT_MIN;}try {if (!$profile = $this->profiler->collect($request, $event->getResponse(), $exception)) {return;}} finally {if ($session instanceof Session) {$usageIndexReference = $usageIndexValue;}}$this->profiles[$request] = $profile;$this->parents[$request] = $this->requestStack->getParentRequest();}public function onKernelTerminate(TerminateEvent $event){// attach children to parentsforeach ($this->profiles as $request) {if (null !== $parentRequest = $this->parents[$request]) {if (isset($this->profiles[$parentRequest])) {$this->profiles[$parentRequest]->addChild($this->profiles[$request]);}}}// save profilesforeach ($this->profiles as $request) {$this->profiler->saveProfile($this->profiles[$request]);}$this->profiles = new \SplObjectStorage();$this->parents = new \SplObjectStorage();}public static function getSubscribedEvents(): array{return [KernelEvents::RESPONSE => ['onKernelResponse', -100],KernelEvents::EXCEPTION => ['onKernelException', 0],KernelEvents::TERMINATE => ['onKernelTerminate', -1024],];}}