<?php /** * StatusNet - the distributed open-source microblogging tool * Copyright (C) 2009, StatusNet, Inc. * * Plugin to implement cache interface for XCache variable cache * * PHP version 5 * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * @category Cache * @package StatusNet * @author Evan Prodromou <evan@status.net> * @copyright 2009 StatusNet, Inc. * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0 * @link http://status.net/ */ if (!defined('STATUSNET')) { // This check helps protect against security problems; // your code file can't be executed directly from the web. exit(1); } /** * A plugin to use XCache's variable cache for the cache interface * * New plugin interface lets us use alternative cache systems * for caching. This one uses XCache's variable cache. * * @category Cache * @package StatusNet * @author Evan Prodromou <evan@status.net> * @copyright 2009 StatusNet, Inc. * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0 * @link http://status.net/ */ class XCachePlugin extends Plugin { /** * Get a value associated with a key * * The value should have been set previously. * * @param string &$key in; Lookup key * @param mixed &$value out; value associated with key * * @return boolean hook success */ function onStartCacheGet(&$key, &$value) { if (!xcache_isset($key)) { $value = false; } else { $value = xcache_get($key); $value = unserialize($value); } Event::handle('EndCacheGet', array($key, &$value)); return false; } /** * Associate a value with a key * * @param string &$key in; Key to use for lookups * @param mixed &$value in; Value to associate * @param integer &$flag in; Flag (passed through to Memcache) * @param integer &$expiry in; Expiry (passed through to Memcache) * @param boolean &$success out; Whether the set was successful * * @return boolean hook success */ function onStartCacheSet(&$key, &$value, &$flag, &$expiry, &$success) { $success = xcache_set($key, serialize($value)); Event::handle('EndCacheSet', array($key, $value, $flag, $expiry)); return false; } /** * Delete a value associated with a key * * @param string &$key in; Key to lookup * @param boolean &$success out; whether it worked * * @return boolean hook success */ function onStartCacheDelete(&$key, &$success) { $success = xcache_unset($key); Event::handle('EndCacheDelete', array($key)); return false; } function onPluginVersion(&$versions) { $versions[] = array('name' => 'XCache', 'version' => STATUSNET_VERSION, 'author' => 'Craig Andrews', 'homepage' => 'http://status.net/wiki/Plugin:XCache', 'rawdescription' => _m('Use the <a href="http://xcache.lighttpd.net/">XCache</a> variable cache to cache query results.')); return true; } }