PsrCacheAdapter.php
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<?php
/*
* This file is part of twig-cache-extension.
*
* (c) Alexander <iam.asm89@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Asm89\Twig\CacheExtension\CacheProvider;
use Asm89\Twig\CacheExtension\CacheProviderInterface;
use Psr\Cache\CacheItemPoolInterface;
/**
* Adapter class to make extension interoperable with every PSR-6 adapter.
*
* @see http://php-cache.readthedocs.io/
*
* @author Rvanlaak <rvanlaak@gmail.com>
*/
class PsrCacheAdapter implements CacheProviderInterface
{
/**
* @var CacheItemPoolInterface
*/
private $cache;
/**
* @param CacheItemPoolInterface $cache
*/
public function __construct(CacheItemPoolInterface $cache)
{
$this->cache = $cache;
}
/**
* @param string $key
* @return mixed|false
*/
public function fetch($key)
{
// PSR-6 implementation returns null, CacheProviderInterface expects false
$item = $this->cache->getItem($key);
if ($item->isHit()) {
return $item->get();
}
return false;
}
/**
* @param string $key
* @param string $value
* @param int|\DateInterval $lifetime
* @return bool
*/
public function save($key, $value, $lifetime = 0)
{
$item = $this->cache->getItem($key);
$item->set($value);
$item->expiresAfter($lifetime);
return $this->cache->save($item);
}
}