Current File : /www/old2/_muzikoterapie/uloziste.eacm.cz/lib/private/Memcache/Redis.php
<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Joas Schilling <coding@schilljs.com>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <robin@icewind.nl>
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Stefan Weil <sw@weilnetz.de>
*
* @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\IMemcacheTTL;
class Redis extends Cache implements IMemcacheTTL {
/**
* @var \Redis|\RedisCluster $cache
*/
private static $cache = null;
public function __construct($prefix = '', string $logFile = '') {
parent::__construct($prefix);
}
/**
* @return \Redis|\RedisCluster|null
* @throws \Exception
*/
public function getCache() {
if (is_null(self::$cache)) {
self::$cache = \OC::$server->getGetRedisFactory()->getInstance();
}
return self::$cache;
}
public function get($key) {
$result = $this->getCache()->get($this->getPrefix() . $key);
if ($result === false && !$this->getCache()->exists($this->getPrefix() . $key)) {
return null;
} else {
return json_decode($result, true);
}
}
public function set($key, $value, $ttl = 0) {
if ($ttl > 0) {
return $this->getCache()->setex($this->getPrefix() . $key, $ttl, json_encode($value));
} else {
return $this->getCache()->set($this->getPrefix() . $key, json_encode($value));
}
}
public function hasKey($key) {
return (bool)$this->getCache()->exists($this->getPrefix() . $key);
}
public function remove($key) {
if ($this->getCache()->del($this->getPrefix() . $key)) {
return true;
} else {
return false;
}
}
public function clear($prefix = '') {
$prefix = $this->getPrefix() . $prefix . '*';
$keys = $this->getCache()->keys($prefix);
$deleted = $this->getCache()->del($keys);
return (is_array($keys) && (count($keys) === $deleted));
}
/**
* 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, $ttl = 0) {
// don't encode ints for inc/dec
if (!is_int($value)) {
$value = json_encode($value);
}
$args = ['nx'];
if ($ttl !== 0 && is_int($ttl)) {
$args['ex'] = $ttl;
}
return $this->getCache()->set($this->getPrefix() . $key, (string)$value, $args);
}
/**
* Increase a stored number
*
* @param string $key
* @param int $step
* @return int | bool
*/
public function inc($key, $step = 1) {
return $this->getCache()->incrBy($this->getPrefix() . $key, $step);
}
/**
* Decrease a stored number
*
* @param string $key
* @param int $step
* @return int | bool
*/
public function dec($key, $step = 1) {
if (!$this->hasKey($key)) {
return false;
}
return $this->getCache()->decrBy($this->getPrefix() . $key, $step);
}
/**
* Compare and set
*
* @param string $key
* @param mixed $old
* @param mixed $new
* @return bool
*/
public function cas($key, $old, $new) {
if (!is_int($new)) {
$new = json_encode($new);
}
$this->getCache()->watch($this->getPrefix() . $key);
if ($this->get($key) === $old) {
$result = $this->getCache()->multi()
->set($this->getPrefix() . $key, $new)
->exec();
return $result !== false;
}
$this->getCache()->unwatch();
return false;
}
/**
* Compare and delete
*
* @param string $key
* @param mixed $old
* @return bool
*/
public function cad($key, $old) {
$this->getCache()->watch($this->getPrefix() . $key);
if ($this->get($key) === $old) {
$result = $this->getCache()->multi()
->del($this->getPrefix() . $key)
->exec();
return $result !== false;
}
$this->getCache()->unwatch();
return false;
}
public function setTTL($key, $ttl) {
$this->getCache()->expire($this->getPrefix() . $key, $ttl);
}
public static function isAvailable(): bool {
return \OC::$server->getGetRedisFactory()->isAvailable();
}
}
Mini Shell