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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 http://www.simplemachines.org |
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* @copyright 2019 Simple Machines and individual contributors |
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* @license http://www.simplemachines.org/about/smf/license.php BSD |
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* |
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* @version 2.1 RC2 |
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*/ |
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if (!defined('SMF')) |
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die('Hacking attempt...'); |
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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 memcache_cache extends cache_api |
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{ |
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/** |
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* @var \Memcache The memcache instance. |
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*/ |
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private $memcache = null; |
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/** |
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* {@inheritDoc} |
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*/ |
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public function isSupported($test = false) |
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{ |
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global $cache_memcached; |
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$supported = class_exists('memcache'); |
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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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global $db_persist, $cache_memcached; |
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$servers = explode(',', $cache_memcached); |
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$port = 0; |
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// Don't try more times than we have servers! |
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$connected = false; |
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$level = 0; |
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// We should keep trying if a server times out, but only for the amount of servers we have. |
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while (!$connected && $level < count($servers)) |
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{ |
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++$level; |
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$this->memcache = new Memcache(); |
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$server = trim($servers[array_rand($servers)]); |
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// Normal host names do not contain slashes, while e.g. unix sockets do. Assume alternative transport pipe with port 0. |
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if (strpos($server, '/') !== false) |
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$host = $server; |
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else |
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{ |
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$server = explode(':', $server); |
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$host = $server[0]; |
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$port = isset($server[1]) ? $server[1] : 11211; |
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} |
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// Don't wait too long: yes, we want the server, but we might be able to run the query faster! |
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if (empty($db_persist)) |
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$connected = $this->memcache->connect($host, $port); |
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else |
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$connected = $this->memcache->pconnect($host, $port); |
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} |
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return $connected; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getData($key, $ttl = null) |
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{ |
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$key = $this->prefix . strtr($key, ':/', '-_'); |
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$value = $this->memcache->get($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 $this->memcache->set($key, $value, 0, $ttl); |
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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 $this->memcache->close(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function cleanCache($type = '') |
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{ |
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$this->invalidateCache(); |
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return $this->memcache->flush(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function cacheSettings(array &$config_vars) |
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{ |
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global $context, $txt; |
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$config_vars[] = $txt['cache_memcache_settings']; |
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$config_vars[] = array('cache_memcached', $txt['cache_memcache_servers'], 'file', 'text', 0, 'cache_memcached', 'postinput' => '<br><div class="smalltext"><em>' . $txt['cache_memcache_servers_subtext'] . '</em></div>'); |
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if (!isset($context['settings_post_javascript'])) |
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$context['settings_post_javascript'] = ''; |
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$context['settings_post_javascript'] .= ' |
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$("#cache_accelerator").change(function (e) { |
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var cache_type = e.currentTarget.value; |
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$("#cache_memcached").prop("disabled", cache_type != "memcache"); |
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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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return $this->memcache->getVersion(); |
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} |
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} |
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155
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?> |
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