213 lines
No EOL
4.3 KiB
PHP
213 lines
No EOL
4.3 KiB
PHP
<?php
|
|
|
|
/**
|
|
* Simple Machines Forum (SMF)
|
|
*
|
|
* @package SMF
|
|
* @author Simple Machines https://www.simplemachines.org
|
|
* @copyright 2022 Simple Machines and individual contributors
|
|
* @license https://www.simplemachines.org/about/smf/license.php BSD
|
|
*
|
|
* @version 2.1.2
|
|
*/
|
|
|
|
namespace SMF\Cache\APIs;
|
|
|
|
use Memcached;
|
|
use SMF\Cache\CacheApi;
|
|
use SMF\Cache\CacheApiInterface;
|
|
|
|
if (!defined('SMF'))
|
|
die('No direct access...');
|
|
|
|
/**
|
|
* Our Cache API class
|
|
*
|
|
* @package CacheAPI
|
|
*/
|
|
class MemcachedImplementation extends CacheApi implements CacheApiInterface
|
|
{
|
|
const CLASS_KEY = 'cache_memcached';
|
|
|
|
/** @var Memcached The memcache instance. */
|
|
private $memcached = null;
|
|
|
|
/** @var string[] */
|
|
private $servers;
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public function __construct()
|
|
{
|
|
global $cache_memcached;
|
|
|
|
$this->servers = array_map(
|
|
function($server)
|
|
{
|
|
if (strpos($server, '/') !== false)
|
|
return array($server, 0);
|
|
|
|
else
|
|
{
|
|
$server = explode(':', $server);
|
|
return array($server[0], isset($server[1]) ? (int) $server[1] : 11211);
|
|
}
|
|
},
|
|
explode(',', $cache_memcached)
|
|
);
|
|
|
|
parent::__construct();
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public function isSupported($test = false)
|
|
{
|
|
global $cache_memcached;
|
|
|
|
$supported = class_exists('Memcached');
|
|
|
|
if ($test)
|
|
return $supported;
|
|
|
|
return parent::isSupported() && $supported && !empty($cache_memcached);
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public function connect()
|
|
{
|
|
$this->memcached = new Memcached;
|
|
|
|
return $this->addServers();
|
|
}
|
|
|
|
/**
|
|
* Add memcached servers.
|
|
*
|
|
* Don't add servers if they already exist. Ideal for persistent connections.
|
|
*
|
|
* @return bool True if there are servers in the daemon, false if not.
|
|
*/
|
|
protected function addServers()
|
|
{
|
|
$currentServers = $this->memcached->getServerList();
|
|
$retVal = !empty($currentServers);
|
|
foreach ($this->servers as $server)
|
|
{
|
|
// Figure out if we have this server or not
|
|
$foundServer = false;
|
|
foreach ($currentServers as $currentServer)
|
|
{
|
|
if ($server[0] == $currentServer['host'] && $server[1] == $currentServer['port'])
|
|
{
|
|
$foundServer = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Found it?
|
|
if (empty($foundServer))
|
|
$retVal |= $this->memcached->addServer($server[0], $server[1]);
|
|
}
|
|
|
|
return $retVal;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public function getData($key, $ttl = null)
|
|
{
|
|
$key = $this->prefix . strtr($key, ':/', '-_');
|
|
|
|
$value = $this->memcached->get($key);
|
|
|
|
// $value should return either data or false (from failure, key not found or empty array).
|
|
if ($value === false)
|
|
return null;
|
|
|
|
return $value;
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public function putData($key, $value, $ttl = null)
|
|
{
|
|
$key = $this->prefix . strtr($key, ':/', '-_');
|
|
|
|
return $this->memcached->set($key, $value, $ttl !== null ? $ttl : $this->ttl);
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public function cleanCache($type = '')
|
|
{
|
|
$this->invalidateCache();
|
|
|
|
// Memcached accepts a delay parameter, always use 0 (instant).
|
|
return $this->memcached->flush(0);
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public function quit()
|
|
{
|
|
return $this->memcached->quit();
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public function cacheSettings(array &$config_vars)
|
|
{
|
|
global $context, $txt;
|
|
|
|
if (!in_array($txt[self::CLASS_KEY .'_settings'], $config_vars))
|
|
{
|
|
$config_vars[] = $txt[self::CLASS_KEY .'_settings'];
|
|
$config_vars[] = array(
|
|
self::CLASS_KEY,
|
|
$txt[self::CLASS_KEY .'_servers'],
|
|
'file',
|
|
'text',
|
|
0,
|
|
'subtext' => $txt[self::CLASS_KEY .'_servers_subtext']);
|
|
}
|
|
|
|
if (!isset($context['settings_post_javascript']))
|
|
$context['settings_post_javascript'] = '';
|
|
|
|
if (empty($context['settings_not_writable']))
|
|
$context['settings_post_javascript'] .= '
|
|
$("#cache_accelerator").change(function (e) {
|
|
var cache_type = e.currentTarget.value;
|
|
$("#'. self::CLASS_KEY .'").prop("disabled", cache_type != "MemcacheImplementation" && cache_type != "MemcachedImplementation");
|
|
});';
|
|
}
|
|
|
|
/**
|
|
* {@inheritDoc}
|
|
*/
|
|
public function getVersion()
|
|
{
|
|
if (!is_object($this->memcached))
|
|
return false;
|
|
|
|
// This gets called in Subs-Admin getServerVersions when loading up support information. If we can't get a connection, return nothing.
|
|
$result = $this->memcached->getVersion();
|
|
|
|
if (!empty($result))
|
|
return current($result);
|
|
|
|
return false;
|
|
}
|
|
}
|
|
|
|
?>
|