107 lines
2.8 KiB
PHP
107 lines
2.8 KiB
PHP
<?php
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/**
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* @author Andreas Fischer <bantu@owncloud.com>
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <icewind@owncloud.com>
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*
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* @copyright Copyright (c) 2015, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Memcache;
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class Memcached extends Cache {
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/**
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* @var \Memcached $cache
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*/
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private static $cache = null;
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public function __construct($prefix = '') {
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parent::__construct($prefix);
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if (is_null(self::$cache)) {
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self::$cache = new \Memcached();
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$servers = \OC_Config::getValue('memcached_servers');
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if (!$servers) {
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$server = \OC_Config::getValue('memcached_server');
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if ($server) {
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$servers = array($server);
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} else {
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$servers = array(array('localhost', 11211));
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}
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}
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self::$cache->addServers($servers);
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}
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}
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/**
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* entries in XCache gets namespaced to prevent collisions between owncloud instances and users
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*/
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protected function getNameSpace() {
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return $this->prefix;
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}
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public function get($key) {
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$result = self::$cache->get($this->getNamespace() . $key);
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if ($result === false and self::$cache->getResultCode() == \Memcached::RES_NOTFOUND) {
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return null;
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} else {
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return $result;
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}
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}
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public function set($key, $value, $ttl = 0) {
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if ($ttl > 0) {
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return self::$cache->set($this->getNamespace() . $key, $value, $ttl);
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} else {
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return self::$cache->set($this->getNamespace() . $key, $value);
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}
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}
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public function hasKey($key) {
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self::$cache->get($this->getNamespace() . $key);
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return self::$cache->getResultCode() === \Memcached::RES_SUCCESS;
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}
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public function remove($key) {
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return self::$cache->delete($this->getNamespace() . $key);
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}
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public function clear($prefix = '') {
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$prefix = $this->getNamespace() . $prefix;
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$allKeys = self::$cache->getAllKeys();
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$keys = array();
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$prefixLength = strlen($prefix);
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foreach ($allKeys as $key) {
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if (substr($key, 0, $prefixLength) === $prefix) {
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$keys[] = $key;
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}
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}
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if (method_exists(self::$cache, 'deleteMulti')) {
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self::$cache->deleteMulti($keys);
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} else {
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foreach ($keys as $key) {
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self::$cache->delete($key);
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}
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}
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return true;
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}
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static public function isAvailable() {
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return extension_loaded('memcached');
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}
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}
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