for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
<?php
/*
* This file is part of the FOSHttpCache package.
*
* (c) FriendsOfSymfony <http://friendsofsymfony.github.com/>
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace FOS\HttpCache\SymfonyCache;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
/**
* Debug handler for the symfony built-in HttpCache.
* Add debug information to the response for use in cache tests.
* @author David Buchmann <[email protected]>
* {@inheritdoc}
class DebugListener implements EventSubscriberInterface
{
public static function getSubscribedEvents(): array
return [
Events::POST_HANDLE => 'handleDebug',
];
}
* Extract the cache HIT/MISS information from the X-Symfony-Cache header.
* For this header to be present, the HttpCache must be created with the
* debug option set to true.
public function handleDebug(CacheEvent $event)
$response = $event->getResponse();
if ($response->headers->has('X-Symfony-Cache')) {
if (false !== strpos($response->headers->get('X-Symfony-Cache'), 'miss')) {
$state = 'MISS';
} elseif (false !== strpos($response->headers->get('X-Symfony-Cache'), 'fresh')) {
$state = 'HIT';
} else {
$state = 'UNDETERMINED';
$response->headers->set('X-Cache', $state);
FriendsOfSymfony /
FOSHttpCache
