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<?php
namespace MailPoet\Doctrine;
if (!defined('ABSPATH')) exit;
use MailPoetVendor\Doctrine\Common\Cache\CacheProvider;
/**
* Array cache
* Based on https://github.com/doctrine/cache/blob/1.11.x/lib/Doctrine/Common/Cache/ArrayCache.php
* The cache implementation was removed from the doctrine/cache v2.0 so we need to provide own implementation.
*/
class ArrayCache extends CacheProvider
{
/** @var mixed[] */
private $data = [];
/** @var int */
private $hitsCount = 0;
/** @var int */
private $missesCount = 0;
/** @var int */
private $upTime;
/**
* {@inheritdoc}
*/
public function __construct()
{
$this->upTime = time();
}
/**
* {@inheritdoc}
*/
protected function doFetch($id) {
if (! $this->doContains($id)) {
$this->missesCount += 1;
return false;
}
$this->hitsCount += 1;
return $this->data[$id][0];
}
/**
* {@inheritdoc}
*/
protected function doContains($id) {
if (! isset($this->data[$id])) {
return false;
}
$expiration = $this->data[$id][1];
if ($expiration && $expiration < \time()) {
$this->doDelete($id);
return false;
}
return true;
}
/**
* {@inheritdoc}
*/
protected function doSave($id, $data, $lifeTime = 0) {
$this->data[$id] = [$data, $lifeTime ? \time() + $lifeTime : false];
return true;
}
/**
* {@inheritdoc}
*/
protected function doDelete($id) {
unset($this->data[$id]);
return true;
}
/**
* {@inheritdoc}
*/
protected function doFlush() {
$this->data = [];
return true;
}
/**
* {@inheritdoc}
*/
protected function doGetStats() {
return [
CacheProvider::STATS_HITS => $this->hitsCount,
CacheProvider::STATS_MISSES => $this->missesCount,
CacheProvider::STATS_UPTIME => $this->upTime,
CacheProvider::STATS_MEMORY_USAGE => null,
CacheProvider::STATS_MEMORY_AVAILABLE => null,
];
}
}