100 lines
2.9 KiB
PHP
100 lines
2.9 KiB
PHP
<?php
|
|
/**
|
|
* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
|
|
* This file is licensed under the Affero General Public License version 3 or
|
|
* later.
|
|
* See the COPYING-README file.
|
|
*/
|
|
|
|
namespace OC\Memcache;
|
|
|
|
use \OCP\ICacheFactory;
|
|
|
|
class Factory implements ICacheFactory {
|
|
/** @var string $globalPrefix */
|
|
private $globalPrefix;
|
|
|
|
/** @var \OCP\ILogger */
|
|
private $logger;
|
|
|
|
/**
|
|
* @param string $globalPrefix
|
|
* @param \OCP\ILogger $logger
|
|
*/
|
|
public function __construct($globalPrefix, $logger) {
|
|
$this->globalPrefix = $globalPrefix;
|
|
$this->logger = $logger;
|
|
}
|
|
|
|
/**
|
|
* get a cache instance, or Null backend if no backend available
|
|
*
|
|
* @param string $prefix
|
|
* @return \OC\Memcache\Cache
|
|
*/
|
|
function create($prefix = '') {
|
|
$prefix = $this->globalPrefix . '/' . $prefix;
|
|
if (XCache::isAvailable()) {
|
|
$this->logger->debug("creating XCache instance", array('app' => 'memcache'));
|
|
return new XCache($prefix);
|
|
} elseif (APCu::isAvailable()) {
|
|
$this->logger->debug('creating APCu instance', array('app'=>'memcache'));
|
|
return new APCu($prefix);
|
|
} elseif (APC::isAvailable()) {
|
|
$this->logger->debug('creating APC instance', array('app'=>'memcache'));
|
|
return new APC($prefix);
|
|
} elseif (Redis::isAvailable()) {
|
|
$this->logger->debug('creating redis instance', array('app'=>'memcache'));
|
|
return new Redis($prefix);
|
|
} elseif (Memcached::isAvailable()) {
|
|
$this->logger->debug('creating memcached instance', array('app'=>'memcache'));
|
|
return new Memcached($prefix);
|
|
} else {
|
|
$this->logger->debug('no cache available instance', array('app'=>'memcache'));
|
|
return new ArrayCache($prefix);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* check if there is a memcache backend available
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function isAvailable() {
|
|
return XCache::isAvailable() || APCu::isAvailable() || APC::isAvailable() || Redis::isAvailable() || Memcached::isAvailable();
|
|
}
|
|
|
|
/**
|
|
* get a in-server cache instance, will return null if no backend is available
|
|
*
|
|
* @param string $prefix
|
|
* @return null|Cache
|
|
*/
|
|
public function createLowLatency($prefix = '') {
|
|
$prefix = $this->globalPrefix . '/' . $prefix;
|
|
if (XCache::isAvailable()) {
|
|
$this->logger->debug('creating xcache instance for low latency', array('app'=>'memcache'));
|
|
return new XCache($prefix);
|
|
} elseif (APCu::isAvailable()) {
|
|
$this->logger->debug('creating APCu instance for low latency', array('app'=>'memcache'));
|
|
return new APCu($prefix);
|
|
} elseif (APC::isAvailable()) {
|
|
$this->logger->debug('creating APC instance for low latency', array('app'=>'memcache'));
|
|
return new APC($prefix);
|
|
} else {
|
|
$this->logger->debug('no low latency cache available', array('app'=>'memcache'));
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* check if there is a in-server backend available
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function isAvailableLowLatency() {
|
|
return XCache::isAvailable() || APCu::isAvailable() || APC::isAvailable();
|
|
}
|
|
|
|
}
|