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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\Data\Collection\Db\FetchStrategy;
use Magento\Framework\App\ObjectManager;
use Magento\Framework\DB\Select;
use Magento\Framework\Serialize\SerializerInterface;
/**
* Retrieve collection data from cache, fail over to another fetch strategy, if cache does not exist yet
*/
class Cache implements \Magento\Framework\Data\Collection\Db\FetchStrategyInterface
{
/**
* @var \Magento\Framework\Cache\FrontendInterface
*/
private $_cache;
/**
* @var \Magento\Framework\Data\Collection\Db\FetchStrategyInterface
*/
private $_fetchStrategy;
/**
* @var string
*/
protected $_cacheIdPrefix = '';
/**
* @var array
*/
protected $_cacheTags = [];
/**
* @var int|bool|null
*/
protected $_cacheLifetime = null;
/**
* @var SerializerInterface
*/
private $serializer;
/**
* Constructor
*
* @param \Magento\Framework\Cache\FrontendInterface $cache
* @param \Magento\Framework\Data\Collection\Db\FetchStrategyInterface $fetchStrategy
* @param string $cacheIdPrefix
* @param array $cacheTags
* @param int|bool|null $cacheLifetime
* @param SerializerInterface|null $serializer
*/
public function __construct(
\Magento\Framework\Cache\FrontendInterface $cache,
\Magento\Framework\Data\Collection\Db\FetchStrategyInterface $fetchStrategy,
$cacheIdPrefix = '',
array $cacheTags = [],
$cacheLifetime = null,
SerializerInterface $serializer = null
) {
$this->_cache = $cache;
$this->_fetchStrategy = $fetchStrategy;
$this->_cacheIdPrefix = $cacheIdPrefix;
$this->_cacheTags = $cacheTags;
$this->_cacheLifetime = $cacheLifetime;
$this->serializer = $serializer ?: ObjectManager::getInstance()->get(SerializerInterface::class);
}
/**
* {@inheritdoc}
*/
public function fetchAll(Select $select, array $bindParams = [])
{
$cacheId = $this->_getSelectCacheId($select);
$result = $this->_cache->load($cacheId);
if ($result) {
$result = $this->serializer->unserialize($result);
} else {
$result = $this->_fetchStrategy->fetchAll($select, $bindParams);
$this->_cache->save(
$this->serializer->serialize($result),
$cacheId,
$this->_cacheTags,
$this->_cacheLifetime
);
}
return $result;
}
/**
* Determine cache identifier based on select query
*
* @param \Magento\Framework\DB\Select|string $select
* @return string
*/
protected function _getSelectCacheId($select)
{
// md5() here is not for cryptographic use.
// phpcs:ignore Magento2.Security.InsecureFunction
return $this->_cacheIdPrefix . md5((string)$select);
}
}