vendor/symfony/http-kernel/EventListener/ProfilerListener.php line 66
- <?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 $event)
- {
- // attach children to parents
- foreach ($this->profiles as $request) {
- if (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();
- }
- public static function getSubscribedEvents(): array
- {
- return [
- KernelEvents::RESPONSE => ['onKernelResponse', -100],
- KernelEvents::EXCEPTION => ['onKernelException', 0],
- KernelEvents::TERMINATE => ['onKernelTerminate', -1024],
- ];
- }
- }