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<?php
declare(strict_types=1);
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Core\RateLimiter\Storage;
use Symfony\Component\RateLimiter\LimiterStateInterface;
use Symfony\Component\RateLimiter\Policy\SlidingWindow;
use Symfony\Component\RateLimiter\Policy\TokenBucket;
use Symfony\Component\RateLimiter\Policy\Window;
use Symfony\Component\RateLimiter\Storage\StorageInterface;
use TYPO3\CMS\Core\Cache\CacheManager;
use TYPO3\CMS\Core\Cache\Frontend\FrontendInterface;
/**
* A rate limiter storage utilizing TYPO3's Caching Framework.
*
* @internal This is not part of the official TYPO3 Core API due to a limitation of the experimental Symfony Rate Limiter API.
*/
class CachingFrameworkStorage implements StorageInterface
{
private FrontendInterface $cacheInstance;
public function __construct(CacheManager $cacheInstance)
{
$this->cacheInstance = $cacheInstance->getCache('ratelimiter');
$this->cacheInstance->collectGarbage();
}
public function save(LimiterStateInterface $limiterState): void
{
$this->cacheInstance->set(
sha1($limiterState->getId()),
serialize($limiterState),
[],
$limiterState->getExpirationTime()
);
}
public function fetch(string $limiterStateId): ?LimiterStateInterface
{
$cacheItem = $this->cacheInstance->get(sha1($limiterStateId));
if ($cacheItem) {
$value = unserialize($cacheItem, ['allowed_classes' => [Window::class, SlidingWindow::class, TokenBucket::class]]);
if ($value instanceof LimiterStateInterface) {
return $value;
}
}
return null;
}
public function delete(string $limiterStateId): void
{
$this->cacheInstance->remove(sha1($limiterStateId));
}
}