95 lines
2.2 KiB
PHP
95 lines
2.2 KiB
PHP
<?php
|
|
/**
|
|
* Copyright (c) 2014 Jörn Friedrich Dreyer <jfd@butonic.de>
|
|
* This file is licensed under the Affero General Public License version 3 or
|
|
* later.
|
|
* See the COPYING-README file.
|
|
*/
|
|
|
|
namespace OC\Memcache;
|
|
|
|
class Redis extends Cache {
|
|
|
|
/**
|
|
* @var \Redis $cache
|
|
*/
|
|
private static $cache = null;
|
|
|
|
public function __construct($prefix = '') {
|
|
parent::__construct($prefix);
|
|
if (is_null(self::$cache)) {
|
|
// TODO allow configuring a RedisArray, see https://github.com/nicolasff/phpredis/blob/master/arrays.markdown#redis-arrays
|
|
self::$cache = new \Redis();
|
|
$config = \OC::$server->getSystemConfig()->getValue('redis', array());
|
|
if (isset($config['host'])) {
|
|
$host = $config['host'];
|
|
} else {
|
|
$host = '127.0.0.1';
|
|
}
|
|
if (isset($config['port'])) {
|
|
$port = $config['port'];
|
|
} else {
|
|
$port = 6379;
|
|
}
|
|
if (isset($config['timeout'])) {
|
|
$timeout = $config['timeout'];
|
|
} else {
|
|
$timeout = 0.0; // unlimited
|
|
}
|
|
self::$cache->connect( $host, $port, $timeout );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* entries in redis get namespaced to prevent collisions between ownCloud instances and users
|
|
*/
|
|
protected function getNameSpace() {
|
|
return $this->prefix;
|
|
}
|
|
|
|
public function get($key) {
|
|
$result = self::$cache->get($this->getNamespace() . $key);
|
|
if ($result === false and ! self::$cache->exists($this->getNamespace() . $key)) {
|
|
return null;
|
|
} else {
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
public function set($key, $value, $ttl = 0) {
|
|
if ($ttl > 0) {
|
|
return self::$cache->setex($this->getNamespace() . $key, $ttl, $value);
|
|
} else {
|
|
return self::$cache->set($this->getNamespace() . $key, $value);
|
|
}
|
|
}
|
|
|
|
public function hasKey($key) {
|
|
return self::$cache->exists($this->getNamespace() . $key);
|
|
}
|
|
|
|
public function remove($key) {
|
|
if (self::$cache->delete($this->getNamespace() . $key)) {
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
}
|
|
|
|
public function clear($prefix = '') {
|
|
$prefix = $this->getNamespace() . $prefix.'*';
|
|
$it = null;
|
|
self::$cache->setOption(\Redis::OPT_SCAN, \Redis::SCAN_RETRY);
|
|
while($keys = self::$cache->scan($it, $prefix)) {
|
|
self::$cache->delete($keys);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static public function isAvailable() {
|
|
return extension_loaded('redis');
|
|
}
|
|
}
|
|
|