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<?php |
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/** |
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* Simple Machines Forum (SMF) |
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* |
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* @package SMF |
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* @author Simple Machines https://www.simplemachines.org |
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* @copyright 2020 Simple Machines and individual contributors |
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* @license https://www.simplemachines.org/about/smf/license.php BSD |
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* |
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* @version 2.1 RC3 |
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*/ |
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namespace SMF\Cache\APIs; |
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use Memcached; |
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use SMF\Cache\CacheApi; |
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use SMF\Cache\CacheApiInterface; |
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if (!defined('SMF')) |
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die('No direct access...'); |
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/** |
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* Our Cache API class |
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* |
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* @package CacheAPI |
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*/ |
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class MemcachedImplementation extends CacheApi implements CacheApiInterface |
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{ |
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const CLASS_KEY = 'cache_memcached'; |
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/** @var Memcached The memcache instance. */ |
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private $memcached = null; |
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/** @var string[] */ |
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private $servers; |
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/** |
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* {@inheritDoc} |
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*/ |
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public function __construct() |
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{ |
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global $cache_memcached; |
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$this->servers = array_map( |
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function($server) |
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{ |
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if (strpos($server, '/') !== false) |
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return array($server, 0); |
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else |
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return array($server, isset($server[1]) ? $server[1] : 11211); |
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}, |
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explode(',', $cache_memcached) |
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); |
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parent::__construct(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function isSupported($test = false) |
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{ |
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global $cache_memcached; |
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$supported = class_exists('Memcached'); |
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if ($test) |
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return $supported; |
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return parent::isSupported() && $supported && !empty($cache_memcached); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function connect() |
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{ |
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$this->memcached = new Memcached; |
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return $this->addServers(); |
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} |
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/** |
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* Add memcached servers. |
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* |
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* Don't add servers if they already exist. Ideal for persistent connections. |
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* |
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* @return bool True if there are servers in the daemon, false if not. |
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*/ |
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protected function addServers() |
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{ |
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$currentServers = $this->memcached->getServerList(); |
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$retVal = !empty($currentServers); |
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foreach ($this->servers as $server) |
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{ |
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// Figure out if we have this server or not |
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$foundServer = false; |
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foreach ($currentServers as $currentServer) |
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{ |
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if ($server[0] == $currentServer['host'] && $server[1] == $currentServer['port']) |
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{ |
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$foundServer = true; |
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break; |
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} |
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} |
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// Found it? |
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if (empty($foundServer)) |
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$retVal |= $this->memcached->addServer($server[0], $server[1]); |
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} |
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return $retVal; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getData($key, $ttl = null) |
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{ |
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$key = $this->prefix . strtr($key, ':/', '-_'); |
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$value = $this->memcached->get($key); |
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// $value should return either data or false (from failure, key not found or empty array). |
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if ($value === false) |
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return null; |
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return $value; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function putData($key, $value, $ttl = null) |
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{ |
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$key = $this->prefix . strtr($key, ':/', '-_'); |
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return $this->memcached->set($key, $value, $ttl !== null ? $ttl : $this->ttl); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function cleanCache($type = '') |
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{ |
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$this->invalidateCache(); |
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// Memcached accepts a delay parameter, always use 0 (instant). |
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return $this->memcached->flush(0); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function quit() |
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{ |
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return $this->memcached->quit(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function cacheSettings(array &$config_vars) |
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{ |
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global $context, $txt; |
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$class_name = $this->getImplementationClassKeyName(); |
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$class_name_txt_key = strtolower($class_name); |
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$config_vars[] = $txt['cache_'. $class_name_txt_key .'_settings']; |
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$config_vars[] = array( |
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self::CLASS_KEY, |
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$txt['cache_'. $class_name_txt_key .'_servers'], |
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'file', |
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'text', |
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0, |
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'cache_'. $class_name_txt_key, |
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'subtext' => $txt['cache_'. $class_name_txt_key .'_servers_subtext']); |
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if (!isset($context['settings_post_javascript'])) |
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$context['settings_post_javascript'] = ''; |
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$context['settings_post_javascript'] .= ' |
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$("#cache_accelerator").change(function (e) { |
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var cache_type = e.currentTarget.value; |
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$("#'. self::CLASS_KEY .'").prop("disabled", cache_type != "'. $class_name .'"); |
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});'; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getVersion() |
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{ |
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if (is_object($this->memcached)) |
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return false; |
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// This gets called in Subs-Admin getServerVersions when loading up support information. If we can't get a connection, return nothing. |
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$result = $this->memcached->getVersion(); |
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if (!empty($result)) |
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return current($result); |
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return false; |
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} |
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} |
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?> |
albertlast /
SMF2.1
