2008-09-21 09:36:57 +03:00
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<?
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/*-------------------------------------------------------
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*
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* LiveStreet Engine Social Networking
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* Copyright © 2008 Mzhelskiy Maxim
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*
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*--------------------------------------------------------
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*
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* Official site: www.livestreet.ru
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* Contact e-mail: rus.engine@gmail.com
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*
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* GNU General Public License, version 2:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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*
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---------------------------------------------------------
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*/
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require_once('classes/lib/external/DklabCache/config.php');
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require_once('Zend/Cache.php');
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require_once('Cache/Backend/TagEmuWrapper.php');
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require_once('Cache/Backend/Profiler.php');
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/**
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* Типы кеширования: file и memory
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*
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*/
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define('SYS_CACHE_TYPE_FILE','file');
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define('SYS_CACHE_TYPE_MEMORY','memory');
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/**
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* Модуль кеширования
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* Работает в двух режимах: файловый кеш через Cache Lite и кеш в памяти через Memcache
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*
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*/
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class Cache extends Module {
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protected $oBackendCache=null;
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protected $bUseCache=SYS_CACHE_USE;
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/**
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* Тип кеширования, прописан в глобльном конфиге config.php
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*
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* @var string
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*/
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protected $sCacheType=SYS_CACHE_TYPE;
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protected $aStats=array(
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'time' =>0,
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'count' => 0,
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'count_get' => 0,
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'count_set' => 0,
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);
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/**
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* Инициализируем нужный тип кеша
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*
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*/
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public function Init() {
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if (!$this->bUseCache) {
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return false;
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}
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if ($this->sCacheType==SYS_CACHE_TYPE_FILE) {
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require_once('Zend/Cache/Backend/File.php');
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$oCahe = new Zend_Cache_Backend_File(
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array(
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'cache_dir' => SYS_CACHE_DIR,
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2008-10-11 12:07:26 +03:00
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'file_name_prefix' => SYS_CACHE_PREFIX,
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2008-09-21 09:36:57 +03:00
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'read_control_type' => 'crc32',
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'read_control' => true,
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'file_locking' => true,
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)
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);
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} elseif ($this->sCacheType==SYS_CACHE_TYPE_MEMORY) {
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require_once('Zend/Cache/Backend/Memcached.php');
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$oCahe = new Zend_Cache_Backend_Memcached(
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array(
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'servers' => array(
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'host' => 'localhost',
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'port' => 11211,
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'persistent' => true
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),
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'compression' => false,
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)
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);
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} else {
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throw new Exception("Неверный тип кеширования: ".$this->sCacheType." Доступны: file, memory");
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}
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$this->oBackendCache = new Dklab_Cache_Backend_TagEmuWrapper(new Dklab_Cache_Backend_Profiler($oCahe,array($this,'CalcStats')));
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}
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/**
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* Получить значение из кеша
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*
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* @param string $sName
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* @return unknown
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*/
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public function Get($sName) {
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if (!$this->bUseCache) {
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return false;
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}
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/**
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* Т.к. название кеша может быть любым то предварительно хешируем имя кеша
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*/
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2008-10-11 12:07:26 +03:00
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$sName=md5(SYS_CACHE_PREFIX.$sName);
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2008-09-21 09:36:57 +03:00
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return $this->oBackendCache->load($sName);
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}
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/**
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* Записать значение в кеш
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*
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* @param unknown_type $data
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* @param string $sName
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* @param array $aTags
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* @param int $iTimeLife
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* @return bool
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*/
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public function Set($data,$sName,$aTags=array(),$iTimeLife=false) {
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if (!$this->bUseCache) {
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return false;
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}
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/**
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* Т.к. название кеша может быть любым то предварительно хешируем имя кеша
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*/
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2008-10-11 12:07:26 +03:00
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$sName=md5(SYS_CACHE_PREFIX.$sName);
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2008-09-21 09:36:57 +03:00
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return $this->oBackendCache->save($data,$sName,$aTags,$iTimeLife);
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}
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/**
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* Удаляет значение из кеша по ключу(имени)
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*
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* @param unknown_type $sName
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* @return bool
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*/
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public function Delete($sName) {
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if (!$this->bUseCache) {
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return false;
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}
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/**
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* Т.к. название кеша может быть любым то предварительно хешируем имя кеша
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*/
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2008-10-11 12:07:26 +03:00
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$sName=md5(SYS_CACHE_PREFIX.$sName);
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2008-09-21 09:36:57 +03:00
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return $this->oBackendCache->remove($sName);
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}
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/**
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* Чистит кеши
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*
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* @param void $cMode
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* @param array $aTags
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* @return bool
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*/
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public function Clean($cMode = Zend_Cache::CLEANING_MODE_ALL, $aTags = array()) {
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if (!$this->bUseCache) {
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return false;
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}
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return $this->oBackendCache->clean($cMode,$aTags);
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}
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/**
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* Статистика использования кеша
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*
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* @param unknown_type $iTime
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* @param unknown_type $sMethod
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*/
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public function CalcStats($iTime,$sMethod) {
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$this->aStats['time']+=$iTime;
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$this->aStats['count']++;
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if ($sMethod=='Dklab_Cache_Backend_Profiler::load') {
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$this->aStats['count_get']++;
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}
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if ($sMethod=='Dklab_Cache_Backend_Profiler::save') {
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$this->aStats['count_set']++;
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}
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//dump($sMethod);
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}
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public function GetStats() {
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return $this->aStats;
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}
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}
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?>
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