friendica/src/Core/Session/MemcacheSessionHandler.php

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<?php
namespace Friendica\Core\Session;
use Friendica\BaseObject;
use Friendica\Core\Session;
use SessionHandlerInterface;
use Memcache;
require_once 'boot.php';
require_once 'include/text.php';
/**
* SessionHandler using Memcache
*
* @author Hypolite Petovan <mrpetovan@gmail.com>
*/
class MemcacheSessionHandler extends BaseObject implements SessionHandlerInterface
{
/**
* @var Memcache
*/
private $memcache = null;
/**
*
* @param Memcache $memcache
*/
public function __construct(Memcache $memcache)
{
$this->memcache = $memcache;
}
public function open($save_path, $session_name)
{
return true;
}
public function read($session_id)
{
if (!x($session_id)) {
return '';
}
$data = $this->memcache->get(self::getApp()->get_hostname() . ":session:" . $session_id);
if (!is_bool($data)) {
Session::$exists = true;
return $data;
}
logger("no data for session $session_id", LOGGER_TRACE);
return '';
}
/**
* @brief Standard PHP session write callback
*
* This callback updates the stored session data and/or the expiration depending
* on the case. Uses the Session::expire for existing session, 5 minutes
* for newly created session.
*
* @param string $session_id Session ID with format: [a-z0-9]{26}
* @param string $session_data Serialized session data
* @return boolean Returns false if parameters are missing, true otherwise
*/
public function write($session_id, $session_data)
{
if (!$session_id) {
return false;
}
if (!$session_data) {
return true;
}
$expire = time() + Session::$expire;
$this->memcache->set(
self::getApp()->get_hostname() . ":session:" . $session_id,
$session_data,
MEMCACHE_COMPRESSED,
$expire
);
return true;
}
public function close()
{
return true;
}
public function destroy($id)
{
$this->memcache->delete(self::getApp()->get_hostname() . ":session:" . $id);
return true;
}
public function gc($maxlifetime)
{
return true;
}
}