125 lines
3.9 KiB
PHP
125 lines
3.9 KiB
PHP
<?php
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/**
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* StatusNet - the distributed open-source microblogging tool
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* Copyright (C) 2009, StatusNet, Inc.
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*
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* Plugin to implement cache interface for XCache variable cache
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*
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* PHP version 5
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*
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* This program 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 as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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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
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Cache
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2009 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET')) {
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// This check helps protect against security problems;
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// your code file can't be executed directly from the web.
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exit(1);
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}
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/**
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* A plugin to use XCache's variable cache for the cache interface
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*
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* New plugin interface lets us use alternative cache systems
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* for caching. This one uses XCache's variable cache.
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*
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* @category Cache
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* @package StatusNet
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* @author Evan Prodromou <evan@status.net>
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* @copyright 2009 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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class XCachePlugin extends Plugin
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{
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/**
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* Get a value associated with a key
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*
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* The value should have been set previously.
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*
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* @param string &$key in; Lookup key
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* @param mixed &$value out; value associated with key
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*
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* @return boolean hook success
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*/
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function onStartCacheGet(&$key, &$value)
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{
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if (!xcache_isset($key)) {
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$value = false;
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} else {
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$value = xcache_get($key);
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$value = unserialize($value);
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}
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Event::handle('EndCacheGet', array($key, &$value));
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return false;
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}
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/**
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* Associate a value with a key
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*
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* @param string &$key in; Key to use for lookups
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* @param mixed &$value in; Value to associate
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* @param integer &$flag in; Flag (passed through to Memcache)
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* @param integer &$expiry in; Expiry (passed through to Memcache)
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* @param boolean &$success out; Whether the set was successful
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*
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* @return boolean hook success
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*/
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function onStartCacheSet(&$key, &$value, &$flag, &$expiry, &$success)
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{
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$success = xcache_set($key, serialize($value));
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Event::handle('EndCacheSet', array($key, $value, $flag,
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$expiry));
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return false;
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}
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/**
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* Delete a value associated with a key
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*
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* @param string &$key in; Key to lookup
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* @param boolean &$success out; whether it worked
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*
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* @return boolean hook success
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*/
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function onStartCacheDelete(&$key, &$success)
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{
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$success = xcache_unset($key);
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Event::handle('EndCacheDelete', array($key));
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return false;
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}
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function onPluginVersion(&$versions)
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{
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$versions[] = array('name' => 'XCache',
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'version' => STATUSNET_VERSION,
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'author' => 'Craig Andrews',
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'homepage' => 'http://status.net/wiki/Plugin:XCache',
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'rawdescription' =>
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_m('Use the <a href="http://xcache.lighttpd.net/">XCache</a> variable cache to cache query results.'));
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return true;
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}
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}
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