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88 lines
2.3 KiB
88 lines
2.3 KiB
2 years ago
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<?php
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/** @package verysimple::Util */
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require_once("verysimple/Phreeze/CacheMemCache.php");
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/**
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* MemCacheProxy provides simple access to memcache pool but ignores
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* if the server is down instead of throwing an error.
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* if the server
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* could not be contacted, ServerOffline will be set to true.
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*
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* @package verysimple::Util
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* @author VerySimple Inc.
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* @copyright 1997-2007 VerySimple, Inc.
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* @license http://www.gnu.org/licenses/lgpl.html LGPL
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* @version 1.0
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*
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*/
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class MemCacheProxy extends CacheMemCache
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{
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public $ServerOffline = false;
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public $LastServerError = '';
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/**
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* Acts as a proxy for a MemCache server and fails gracefull if the pool cannot be contacted
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*
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* @param
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* array in host/port format: array('host1'=>'11211','host2'=>'11211')
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* @param
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* string a unique string. prevents conflicts in case multiple apps are using the same memcached server bank
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*/
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public function __construct($server_array = array('localhost' => '11211'), $uniquePrefix = "CACHE-")
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{
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if (class_exists('Memcache')) {
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$memcache = new Memcache();
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foreach (array_keys($server_array) as $host) {
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// print "adding server $host " . $server_array[$host];
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$memcache->addServer($host, $server_array [$host]);
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}
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parent::__construct($memcache, $uniquePrefix, true);
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} else {
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$this->LastServerError = 'Memcache client module not installed';
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$this->ServerOffline = true;
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}
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}
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/**
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* @inheritdocs
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*/
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public function Get($key, $flags = null)
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{
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// prevent hammering the server if it is down
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if ($this->ServerOffline) {
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return null;
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}
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return parent::Get($key, $flags);
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}
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/**
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* @inheritdocs
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*/
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public function Set($key, $val, $flags = null, $timeout = 0)
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{
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// prevent hammering the server if it is down
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if ($this->ServerOffline) {
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return null;
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}
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return parent::Set($key, $val, $flags, $timeout);
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}
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/**
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* @inheritdocs
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*/
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public function Delete($key)
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{
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// prevent hammering the server if it is down
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if ($this->ServerOffline) {
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return null;
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}
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return parent::Delete($key);
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}
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}
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