/**
* Returns whether or not a lock exists.
*
* @param Request $request A Request instance
*
* @return Boolean true if lock exists, false otherwise
*/
public function isLocked(Request $request)
{
$metadataKey = $this->getMetadataKey($request);
$this->client->createConnection();
$result = $this->client->hget($this->lock_key, $metadataKey);
$this->client->close();
return $result == 1;
}
