107 lines
2.3 KiB
PHP
107 lines
2.3 KiB
PHP
<?php
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/**
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* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC\Memcache;
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use \OCP\ICacheFactory;
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class Factory implements ICacheFactory {
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const NULL_CACHE = '\\OC\\Memcache\\Null';
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/**
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* @var string $globalPrefix
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*/
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private $globalPrefix;
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/**
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* @var string $localCacheClass
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*/
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private $localCacheClass;
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/**
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* @var string $distributedCacheClass
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*/
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private $distributedCacheClass;
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/**
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* @param string $globalPrefix
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* @param string|null $localCacheClass
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* @param string|null $distributedCacheClass
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*/
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public function __construct($globalPrefix,
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$localCacheClass = null, $distributedCacheClass = null)
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{
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$this->globalPrefix = $globalPrefix;
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if (!($localCacheClass && $localCacheClass::isAvailable())) {
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$localCacheClass = self::NULL_CACHE;
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}
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if (!($distributedCacheClass && $distributedCacheClass::isAvailable())) {
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$distributedCacheClass = $localCacheClass;
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}
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$this->localCacheClass = $localCacheClass;
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$this->distributedCacheClass = $distributedCacheClass;
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}
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/**
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* create a distributed cache instance
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*
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* @param string $prefix
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* @return \OC\Memcache\Cache
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*/
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public function createDistributed($prefix = '') {
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return new $this->distributedCacheClass($this->globalPrefix . '/' . $prefix);
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}
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/**
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* create a local cache instance
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*
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* @param string $prefix
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* @return \OC\Memcache\Cache
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*/
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public function createLocal($prefix = '') {
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return new $this->localCacheClass($this->globalPrefix . '/' . $prefix);
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}
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/**
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* @see \OC\Memcache\Factory::createDistributed()
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* @param string $prefix
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* @return \OC\Memcache\Cache
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*/
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public function create($prefix = '') {
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return $this->createDistributed($prefix);
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}
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/**
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* check memcache availability
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*
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* @return bool
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*/
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public function isAvailable() {
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return ($this->distributedCacheClass !== self::NULL_CACHE);
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}
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/**
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* @see \OC\Memcache\Factory::createLocal()
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* @param string $prefix
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* @return \OC\Memcache\Cache|null
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*/
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public function createLowLatency($prefix = '') {
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return $this->createLocal($prefix);
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}
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/**
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* check local memcache availability
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*
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* @return bool
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*/
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public function isAvailableLowLatency() {
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return ($this->localCacheClass !== self::NULL_CACHE);
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}
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}
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