145 lines
5.0 KiB
PHP
Executable File
145 lines
5.0 KiB
PHP
Executable File
<?php
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if(!defined('sugarEntry') || !sugarEntry) die('Not A Valid Entry Point');
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/*********************************************************************************
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* SugarCRM is a customer relationship management program developed by
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* SugarCRM, Inc. Copyright (C) 2004-2010 SugarCRM Inc.
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU Affero General Public License version 3 as published by the
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* Free Software Foundation with the addition of the following permission added
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* to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
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* IN WHICH THE COPYRIGHT IS OWNED BY SUGARCRM, SUGARCRM DISCLAIMS THE WARRANTY
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* OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Affero General Public License along with
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* this program; if not, see http://www.gnu.org/licenses or write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA.
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*
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* You can contact SugarCRM, Inc. headquarters at 10050 North Wolfe Road,
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* SW2-130, Cupertino, CA 95014, USA. or at email address contact@sugarcrm.com.
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*
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* The interactive user interfaces in modified source and object code versions
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* of this program must display Appropriate Legal Notices, as required under
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* Section 5 of the GNU Affero General Public License version 3.
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*
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* In accordance with Section 7(b) of the GNU Affero General Public License version 3,
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* these Appropriate Legal Notices must retain the display of the "Powered by
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* SugarCRM" logo. If the display of the logo is not reasonably feasible for
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* technical reasons, the Appropriate Legal Notices must display the words
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* "Powered by SugarCRM".
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********************************************************************************/
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/**
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* @abstract
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*/
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class SugarCache_ExternalAbstract extends SugarCache_Base
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{
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/**
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* Use the parent of object to attempt to retrieve cache? i.e., use local
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* memory cache.
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*
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* @var bool
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* @access protected
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*/
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var $_use_parent = true;
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/**
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* An internal value that can be used to adjust the length of a timeout.
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*
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* If not set prior to calling {@link init()}, this will default to the constant
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* EXTERNAL_CACHE_INTERVAL_SECONDS
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*
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* @var int
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*/
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var $timeout = null;
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/**
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* Stores the cache name
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* @access private
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*/
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var $_name = '';
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/**
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* Serves to initialize this cache
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*/
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function init()
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{
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if (empty($this->_timeout)) {
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$this->timeout = EXTERNAL_CACHE_INTERVAL_SECONDS;
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}
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$this->_use_parent = false;
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$value = $this->get(EXTERNAL_CACHE_WORKING_CHECK_KEY);
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if ($value != EXTERNAL_CACHE_WORKING_CHECK_KEY) {
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$this->set(
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EXTERNAL_CACHE_WORKING_CHECK_KEY,
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EXTERNAL_CACHE_WORKING_CHECK_KEY
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);
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$value = $this->get(EXTERNAL_CACHE_WORKING_CHECK_KEY);
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// Clear the cache statistics after the test. This makes the statistics work out.
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$GLOBALS['external_cache_request_external_hits'] = 0;
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$GLOBALS['external_cache_request_external_total'] = 0;
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}
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$this->_use_parent = true;
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$this->initialized = (EXTERNAL_CACHE_WORKING_CHECK_KEY == $value);
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if (empty($this->_name)) {
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$this->_name = substr(get_class($this), 11);
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}
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}
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function get($key)
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{
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if ($this->_use_parent && !is_null($value = parent::get($key))) {
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if (EXTERNAL_CACHE_DEBUG) {
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SugarCache::log("{$this->_name}:: found {$key} in local memory cache");
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}
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return $value;
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}
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if(!$GLOBALS['external_cache_enabled']) {
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if (EXTERNAL_CACHE_DEBUG) {
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SugarCache::log("{$this->_name}:: caching disabled", 'fail');
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}
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return null;
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}
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$GLOBALS['external_cache_request_external_total']++;
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if(EXTERNAL_CACHE_DEBUG) {
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SugarCache::log("{$this->_name}:: retrieving key from cache ($key)");
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}
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return null;
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}
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function _realKey($key)
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{
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return $GLOBALS['sugar_config']['unique_key'] . $key;
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}
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function _processGet($key, $value)
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{
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if (!empty($value)) {
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if (EXTERNAL_CACHE_DEBUG) {
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SugarCache::log("{$this->_name}:: Retrieved from external cache: {$key}", 'pass');
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}
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$GLOBALS['external_cache_request_external_hits']++;
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$this->_cache[$key] = $value;
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return $this->_cache[$key];
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}
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if(EXTERNAL_CACHE_DEBUG) {
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SugarCache::log("{$this->_name}:: External cache retrieve failed: $key", 'fail');
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}
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return null;
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}
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} |