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<?php
/**
*
* @package acm
* @copyright (c) 2011 phpBB Group
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
*
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
exit;
}
if (!defined('PHPBB_ACM_REDIS_PORT'))
{
define('PHPBB_ACM_REDIS_PORT', 6379);
}
if (!defined('PHPBB_ACM_REDIS_HOST'))
{
define('PHPBB_ACM_REDIS_HOST', 'localhost');
}
/**
* ACM for Redis
*
* Compatible with the php extension phpredis available
* at https://github.com/nicolasff/phpredis
*
* @package acm
*/
class phpbb_cache_driver_redis extends phpbb_cache_driver_memory
{
var $extension = 'redis';
var $redis;
function __construct()
{
// Call the parent constructor
parent::__construct();
$this->redis = new Redis();
$this->redis->connect(PHPBB_ACM_REDIS_HOST, PHPBB_ACM_REDIS_PORT);
if (defined('PHPBB_ACM_REDIS_PASSWORD'))
{
if (!$this->redis->auth(PHPBB_ACM_REDIS_PASSWORD))
{
global $acm_type;
trigger_error("Incorrect password for the ACM module $acm_type.", E_USER_ERROR);
}
}
$this->redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP);
$this->redis->setOption(Redis::OPT_PREFIX, $this->key_prefix);
if (defined('PHPBB_ACM_REDIS_DB'))
{
if (!$this->redis->select(PHPBB_ACM_REDIS_DB))
{
global $acm_type;
trigger_error("Incorrect database for the ACM module $acm_type.", E_USER_ERROR);
}
}
}
/**
* Unload the cache resources
*
* @return void
*/
function unload()
{
parent::unload();
$this->redis->close();
}
/**
* Purge cache data
*
* @return void
*/
function purge()
{
$this->redis->flushDB();
parent::purge();
}
/**
* Fetch an item from the cache
*
* @access protected
* @param string $var Cache key
* @return mixed Cached data
*/
function _read($var)
{
return $this->redis->get($var);
}
/**
* Store data in the cache
*
* @access protected
* @param string $var Cache key
* @param mixed $data Data to store
* @param int $ttl Time-to-live of cached data
* @return bool True if the operation succeeded
*/
function _write($var, $data, $ttl = 2592000)
{
return $this->redis->setex($var, $ttl, $data);
}
/**
* Remove an item from the cache
*
* @access protected
* @param string $var Cache key
* @return bool True if the operation succeeded
*/
function _delete($var)
{
if ($this->redis->delete($var) > 0)
{
return true;
}
return false;
}
}
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