2018-03-24 14:39:13 -04:00
|
|
|
<?php
|
|
|
|
|
|
|
|
namespace Friendica\Core\Cache;
|
|
|
|
|
|
|
|
use Friendica\BaseObject;
|
|
|
|
use Friendica\Core\Cache;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Memcached Cache Driver
|
|
|
|
*
|
|
|
|
* @author Hypolite Petovan <mrpetovan@gmail.com>
|
|
|
|
*/
|
|
|
|
class MemcachedCacheDriver extends BaseObject implements ICacheDriver
|
|
|
|
{
|
|
|
|
/**
|
|
|
|
* @var Memcached
|
|
|
|
*/
|
|
|
|
private $memcached;
|
|
|
|
|
|
|
|
public function __construct(array $memcached_hosts)
|
|
|
|
{
|
|
|
|
if (!class_exists('Memcached', false)) {
|
|
|
|
throw new \Exception('Memcached class isn\'t available');
|
|
|
|
}
|
|
|
|
|
|
|
|
$this->memcached = new \Memcached();
|
|
|
|
|
|
|
|
$this->memcached->addServers($memcached_hosts);
|
|
|
|
|
|
|
|
if (count($this->memcached->getServerList()) == 0) {
|
|
|
|
throw new \Exception('Expected Memcached servers aren\'t available, config:' . var_export($memcached_hosts, true));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
public function get($key)
|
|
|
|
{
|
|
|
|
$return = null;
|
|
|
|
|
|
|
|
// We fetch with the hostname as key to avoid problems with other applications
|
|
|
|
$value = $this->memcached->get(self::getApp()->get_hostname() . ':' . $key);
|
|
|
|
|
|
|
|
if ($this->memcached->getResultCode() === \Memcached::RES_SUCCESS) {
|
|
|
|
$return = $value;
|
|
|
|
}
|
|
|
|
|
|
|
|
return $return;
|
|
|
|
}
|
|
|
|
|
|
|
|
public function set($key, $value, $duration = Cache::MONTH)
|
|
|
|
{
|
|
|
|
// We store with the hostname as key to avoid problems with other applications
|
|
|
|
return $this->memcached->set(
|
|
|
|
self::getApp()->get_hostname() . ":" . $key,
|
|
|
|
$value,
|
|
|
|
time() + $duration
|
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
public function delete($key)
|
|
|
|
{
|
|
|
|
return $this->memcached->delete($key);
|
|
|
|
}
|
|
|
|
|
|
|
|
public function clear()
|
|
|
|
{
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|