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<?php
/**
* @author Andreas Fischer <bantu@owncloud.com>
* @author Bart Visscher <bartv@thisnet.nl>
* @author Joas Schilling <nickvergessen@gmx.de>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Lukas Reschke <lukas@owncloud.com>
* @author Markus Goetz <markus@woboq.com>
* @author Robin Appelman <icewind@owncloud.com>
* @author Robin McCorkell <rmccorkell@karoshi.org.uk>
*
* @copyright Copyright (c) 2015, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Memcache;
use \OCP\ICacheFactory;
class Factory implements ICacheFactory {
/**
* @var string $globalPrefix
*/
private $globalPrefix;
/**
* @param string $globalPrefix
*/
public function __construct($globalPrefix) {
$this->globalPrefix = $globalPrefix;
}
/**
* get a cache instance, or Null backend if no backend available
*
* @param string $prefix
* @return \OC\Memcache\Cache
*/
function create($prefix = '') {
$prefix = $this->globalPrefix . '/' . $prefix;
if (XCache::isAvailable()) {
return new XCache($prefix);
} elseif (APCu::isAvailable()) {
return new APCu($prefix);
} elseif (APC::isAvailable()) {
return new APC($prefix);
} elseif (Redis::isAvailable()) {
return new Redis($prefix);
} elseif (Memcached::isAvailable()) {
return new Memcached($prefix);
} else {
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 . '/' . $prefix;
if (XCache::isAvailable()) {
return new XCache($prefix);
} elseif (APCu::isAvailable()) {
return new APCu($prefix);
} elseif (APC::isAvailable()) {
return new APC($prefix);
} else {
return null;
}
}
/**
* check if there is a in-server backend available
*
* @return bool
*/
public function isAvailableLowLatency() {
return XCache::isAvailable() || APCu::isAvailable() || APC::isAvailable();
}
}
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