135 lines
3.5 KiB
PHP
135 lines
3.5 KiB
PHP
<?php
|
|
/**
|
|
* @author Andreas Fischer <bantu@owncloud.com>
|
|
* @author Bart Visscher <bartv@thisnet.nl>
|
|
* @author Clark Tomlinson <fallen013@gmail.com>
|
|
* @author Morris Jobke <hey@morrisjobke.de>
|
|
* @author Robin Appelman <icewind@owncloud.com>
|
|
* @author Thomas Müller <thomas.mueller@tmit.eu>
|
|
*
|
|
* @copyright Copyright (c) 2016, 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\IMemcache;
|
|
|
|
/**
|
|
* See http://xcache.lighttpd.net/wiki/XcacheApi for provided constants and
|
|
* functions etc.
|
|
*/
|
|
class XCache extends Cache implements IMemcache {
|
|
use CASTrait;
|
|
|
|
use CADTrait;
|
|
|
|
/**
|
|
* entries in XCache gets namespaced to prevent collisions between ownCloud instances and users
|
|
*/
|
|
protected function getNameSpace() {
|
|
return $this->prefix;
|
|
}
|
|
|
|
public function get($key) {
|
|
return xcache_get($this->getNamespace() . $key);
|
|
}
|
|
|
|
public function set($key, $value, $ttl = 0) {
|
|
if ($ttl > 0) {
|
|
return xcache_set($this->getNamespace() . $key, $value, $ttl);
|
|
} else {
|
|
return xcache_set($this->getNamespace() . $key, $value);
|
|
}
|
|
}
|
|
|
|
public function hasKey($key) {
|
|
return xcache_isset($this->getNamespace() . $key);
|
|
}
|
|
|
|
public function remove($key) {
|
|
return xcache_unset($this->getNamespace() . $key);
|
|
}
|
|
|
|
public function clear($prefix = '') {
|
|
if (function_exists('xcache_unset_by_prefix')) {
|
|
return xcache_unset_by_prefix($this->getNamespace() . $prefix);
|
|
} else {
|
|
// Since we can not clear by prefix, we just clear the whole cache.
|
|
xcache_clear_cache(\XC_TYPE_VAR, 0);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Set a value in the cache if it's not already stored
|
|
*
|
|
* @param string $key
|
|
* @param mixed $value
|
|
* @param int $ttl Time To Live in seconds. Defaults to 60*60*24
|
|
* @return bool
|
|
*/
|
|
public function add($key, $value, $ttl = 0) {
|
|
if ($this->hasKey($key)) {
|
|
return false;
|
|
} else {
|
|
return $this->set($key, $value, $ttl);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Increase a stored number
|
|
*
|
|
* @param string $key
|
|
* @param int $step
|
|
* @return int | bool
|
|
*/
|
|
public function inc($key, $step = 1) {
|
|
return xcache_inc($this->getPrefix() . $key, $step);
|
|
}
|
|
|
|
/**
|
|
* Decrease a stored number
|
|
*
|
|
* @param string $key
|
|
* @param int $step
|
|
* @return int | bool
|
|
*/
|
|
public function dec($key, $step = 1) {
|
|
return xcache_dec($this->getPrefix() . $key, $step);
|
|
}
|
|
|
|
static public function isAvailable() {
|
|
if (!extension_loaded('xcache')) {
|
|
return false;
|
|
}
|
|
if (\OC::$CLI && !getenv('XCACHE_TEST')) {
|
|
return false;
|
|
}
|
|
if (!function_exists('xcache_unset_by_prefix') && \OC::$server->getIniWrapper()->getBool('xcache.admin.enable_auth')) {
|
|
// We do not want to use XCache if we can not clear it without
|
|
// using the administration function xcache_clear_cache()
|
|
// AND administration functions are password-protected.
|
|
return false;
|
|
}
|
|
$var_size = \OC::$server->getIniWrapper()->getBytes('xcache.var_size');
|
|
if (!$var_size) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
}
|