158 lines
3.1 KiB
PHP
158 lines
3.1 KiB
PHP
<?php
|
|
/**
|
|
* MyBB 1.8
|
|
* Copyright 2014 MyBB Group, All Rights Reserved
|
|
*
|
|
* Website: http://www.mybb.com
|
|
* License: http://www.mybb.com/about/license
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* Memcached Cache Handler
|
|
*/
|
|
class memcachedCacheHandler implements CacheHandlerInterface
|
|
{
|
|
/**
|
|
* The memcached server resource
|
|
*
|
|
* @var Memcached
|
|
*/
|
|
public $memcached;
|
|
|
|
/**
|
|
* Unique identifier representing this copy of MyBB
|
|
*
|
|
* @var string
|
|
*/
|
|
public $unique_id;
|
|
|
|
function __construct()
|
|
{
|
|
global $mybb;
|
|
|
|
if(!function_exists("memcached_connect"))
|
|
{
|
|
// Check if our Memcached extension is loaded
|
|
if(!extension_loaded("Memcached"))
|
|
{
|
|
// Throw our super awesome cache loading error
|
|
$mybb->trigger_generic_error("memcached_load_error");
|
|
die;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Connect and initialize this handler.
|
|
*
|
|
* @return boolean True if successful, false on failure
|
|
*/
|
|
function connect()
|
|
{
|
|
global $mybb, $error_handler;
|
|
|
|
$this->memcached = new Memcached;
|
|
|
|
if($mybb->config['memcache']['host'])
|
|
{
|
|
$mybb->config['memcache'][0] = $mybb->config['memcache'];
|
|
unset($mybb->config['memcache']['host']);
|
|
unset($mybb->config['memcache']['port']);
|
|
}
|
|
|
|
foreach($mybb->config['memcache'] as $memcached)
|
|
{
|
|
if(!$memcached['host'])
|
|
{
|
|
$message = "Please configure the memcache settings in inc/config.php before attempting to use this cache handler";
|
|
$error_handler->trigger($message, MYBB_CACHEHANDLER_LOAD_ERROR);
|
|
die;
|
|
}
|
|
|
|
if(!isset($memcached['port']))
|
|
{
|
|
$memcached['port'] = "11211";
|
|
}
|
|
|
|
$this->memcached->addServer($memcached['host'], $memcached['port']);
|
|
|
|
if(!$this->memcached)
|
|
{
|
|
$message = "Unable to connect to the memcached server on {$memcached['memcache_host']}:{$memcached['memcache_port']}. Are you sure it is running?";
|
|
$error_handler->trigger($message, MYBB_CACHEHANDLER_LOAD_ERROR);
|
|
die;
|
|
}
|
|
}
|
|
|
|
// Set a unique identifier for all queries in case other forums are using the same memcache server
|
|
$this->unique_id = md5(MYBB_ROOT);
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Retrieve an item from the cache.
|
|
*
|
|
* @param string $name The name of the cache
|
|
* @return mixed Cache data if successful, false if failure
|
|
*/
|
|
function fetch($name)
|
|
{
|
|
$data = $this->memcached->get($this->unique_id."_".$name);
|
|
|
|
if($data === false)
|
|
{
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
return $data;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Write an item to the cache.
|
|
*
|
|
* @param string $name The name of the cache
|
|
* @param mixed $contents The data to write to the cache item
|
|
* @return boolean True on success, false on failure
|
|
*/
|
|
function put($name, $contents)
|
|
{
|
|
return $this->memcached->set($this->unique_id."_".$name, $contents);
|
|
}
|
|
|
|
/**
|
|
* Delete a cache
|
|
*
|
|
* @param string $name The name of the cache
|
|
* @return boolean True on success, false on failure
|
|
*/
|
|
function delete($name)
|
|
{
|
|
return $this->memcached->delete($this->unique_id."_".$name);
|
|
}
|
|
|
|
/**
|
|
* Disconnect from the cache
|
|
*/
|
|
function disconnect()
|
|
{
|
|
@$this->memcached->quit();
|
|
}
|
|
|
|
/**
|
|
* @param string $name
|
|
*
|
|
* @return string
|
|
*/
|
|
function size_of($name='')
|
|
{
|
|
global $lang;
|
|
|
|
return $lang->na;
|
|
}
|
|
}
|
|
|