/**
* Decrease a stored number
*
* @param string $key
* @param int $step
* @return int | bool
*/
public function dec($key, $step = 1)
{
if (!$this->hasKey($key)) {
return false;
}
return self::$cache->decrBy($this->getNamespace() . $key, $step);
}
/**
* Compare and delete
*
* @param string $key
* @param mixed $old
* @return bool
*/
public function cad($key, $old)
{
self::$cache->watch($this->getNamespace() . $key);
if ($this->get($key) === $old) {
$result = self::$cache->multi()->del($this->getNamespace() . $key)->exec();
return $result === false ? false : true;
}
self::$cache->unwatch();
return false;
}
public static function setUpBeforeClass()
{
parent::setUpBeforeClass();
if (!\OC\Memcache\Redis::isAvailable()) {
self::markTestSkipped('The redis extension is not available.');
}
$instance = new \OC\Memcache\Redis(self::getUniqueID());
if ($instance->set(self::getUniqueID(), self::getUniqueID()) === false) {
self::markTestSkipped('redis server seems to be down.');
}
}
public static function setUpBeforeClass()
{
parent::setUpBeforeClass();
if (!\OC\Memcache\Redis::isAvailable()) {
self::markTestSkipped('The redis extension is not available.');
}
set_error_handler(function ($errno, $errstr) {
restore_error_handler();
self::markTestSkipped($errstr);
}, E_WARNING);
$instance = new \OC\Memcache\Redis(self::getUniqueID());
restore_error_handler();
if ($instance->set(self::getUniqueID(), self::getUniqueID()) === false) {
self::markTestSkipped('redis server seems to be down.');
}
}
public function setTTL($key, $ttl)
{
self::$cache->expire($this->getNamespace() . $key, $ttl);
}
/**
* check if there is a memcache backend available
*
* @return bool
*/
public function isAvailable()
{
return XCache::isAvailable() || APCu::isAvailable() || APC::isAvailable() || Redis::isAvailable() || Memcached::isAvailable();
}