210 lines
4.3 KiB
PHP
210 lines
4.3 KiB
PHP
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<?php
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/**
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* @package Joomla.Platform
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* @subpackage Cache
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*
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* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
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* @license GNU General Public License version 2 or later; see LICENSE
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*/
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defined('JPATH_PLATFORM') or die;
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/**
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* XCache cache storage handler
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*
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* @package Joomla.Platform
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* @subpackage Cache
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* @link http://xcache.lighttpd.net/
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* @since 11.1
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*/
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class JCacheStorageXcache extends JCacheStorage
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{
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/**
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* Get cached data by id and group
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*
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* @param string $id The cache data id
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* @param string $group The cache data group
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* @param boolean $checkTime True to verify cache time expiration threshold
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*
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* @return mixed Boolean false on failure or a cached data string
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*
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* @since 11.1
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*/
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public function get($id, $group, $checkTime = true)
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{
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$cache_id = $this->_getCacheId($id, $group);
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$cache_content = xcache_get($cache_id);
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if ($cache_content === null)
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{
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return false;
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}
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return $cache_content;
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}
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/**
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* Get all cached data
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*
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* This requires the php.ini setting xcache.admin.enable_auth = Off.
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*
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* @return array data
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*
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* @since 11.1
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*/
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public function getAll()
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{
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parent::getAll();
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$allinfo = xcache_list(XC_TYPE_VAR, 0);
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$keys = $allinfo['cache_list'];
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$secret = $this->_hash;
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$data = array();
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foreach ($keys as $key)
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{
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$namearr = explode('-', $key['name']);
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if ($namearr !== false && $namearr[0] == $secret && $namearr[1] == 'cache')
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{
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$group = $namearr[2];
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if (!isset($data[$group]))
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{
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$item = new JCacheStorageHelper($group);
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}
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else
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{
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$item = $data[$group];
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}
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$item->updateSize($key['size'] / 1024);
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$data[$group] = $item;
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}
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}
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return $data;
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}
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/**
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* Store the data by id and group
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*
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* @param string $id The cache data id
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* @param string $group The cache data group
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* @param string $data The data to store in cache
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*
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* @return boolean True on success, false otherwise
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*
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* @since 11.1
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*/
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public function store($id, $group, $data)
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{
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$cache_id = $this->_getCacheId($id, $group);
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$store = xcache_set($cache_id, $data, $this->_lifetime);
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return $store;
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}
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/**
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* Remove a cached data entry by id and group
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*
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* @param string $id The cache data id
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* @param string $group The cache data group
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*
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* @return boolean True on success, false otherwise
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*
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* @since 11.1
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*/
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public function remove($id, $group)
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{
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$cache_id = $this->_getCacheId($id, $group);
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if (!xcache_isset($cache_id))
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{
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return true;
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}
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return xcache_unset($cache_id);
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}
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/**
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* Clean cache for a group given a mode.
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*
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* This requires the php.ini setting xcache.admin.enable_auth = Off.
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*
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* @param string $group The cache data group
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* @param string $mode The mode for cleaning cache [group|notgroup]
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* group mode : cleans all cache in the group
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* notgroup mode : cleans all cache not in the group
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*
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* @return boolean True on success, false otherwise
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*
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* @since 11.1
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*/
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public function clean($group, $mode = null)
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{
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$allinfo = xcache_list(XC_TYPE_VAR, 0);
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$keys = $allinfo['cache_list'];
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$secret = $this->_hash;
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foreach ($keys as $key)
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{
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if (strpos($key['name'], $secret . '-cache-' . $group . '-') === 0 xor $mode != 'group')
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{
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xcache_unset($key['name']);
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}
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}
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return true;
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}
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/**
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* Garbage collect expired cache data
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*
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* This is a dummy, since xcache has built in garbage collector, turn it
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* on in php.ini by changing default xcache.gc_interval setting from
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* 0 to 3600 (=1 hour)
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*
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* @return boolean True on success, false otherwise.
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*
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* @since 11.1
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*/
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public function gc()
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{
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/*
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$now = time();
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$cachecount = xcache_count(XC_TYPE_VAR);
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for ($i = 0; $i < $cachecount; $i ++) {
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$allinfo = xcache_list(XC_TYPE_VAR, $i);
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$keys = $allinfo ['cache_list'];
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foreach($keys as $key) {
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if (strstr($key['name'], $this->_hash)) {
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if (($key['ctime'] + $this->_lifetime ) < $this->_now) xcache_unset($key['name']);
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}
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}
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}
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*/
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return true;
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}
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/**
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* Test to see if the cache storage is available.
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*
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* @return boolean True on success, false otherwise.
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*
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* @since 12.1
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*/
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public static function isSupported()
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{
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return (extension_loaded('xcache'));
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}
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}
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