Viewing file:  SelfCheckingResourceChecker.php (1.34 KB) -rwxr-x---
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<?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\Config\Resource;
use Symfony\Component\Config\ResourceCheckerInterface;
/**
* Resource checker for instances of SelfCheckingResourceInterface.
*
* As these resources perform the actual check themselves, we can provide
* this class as a standard way of validating them.
*
* @author Matthias Pigulla <mp@webfactory.de>
*/
class SelfCheckingResourceChecker implements ResourceCheckerInterface
{
// Common shared cache, because this checker can be used in different
// situations. For example, when using the full stack framework, the router
// and the container have their own cache. But they may check the very same
// resources
private static $cache = [];
public function supports(ResourceInterface $metadata)
{
return $metadata instanceof SelfCheckingResourceInterface;
}
/**
* @param SelfCheckingResourceInterface $resource
*/
public function isFresh(ResourceInterface $resource, int $timestamp)
{
$key = "$resource:$timestamp";
return self::$cache[$key] ?? self::$cache[$key] = $resource->isFresh($timestamp);
}
}
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