/**
* @param unknown $class
* @param unknown $key
* @param unknown $operation
* @throws IllegalStateException
* @return \n2n\core\Lock
*/
private static function createLock($class, $key, $operation)
{
if (self::$fsPath === null) {
throw new IllegalStateException('Sync not initialized.');
}
$id = '';
if ($class !== null) {
$id .= 'c:' . self::determineClassName($class);
}
if ($key !== null) {
$id .= '-k:' . $key;
}
$fileName = (string) self::$fsPath->ext(HashUtils::base36Md5Hash($id) . self::FILE_SUFFIX);
$resource = IoUtils::fopen($fileName, 'c');
$blocked = null;
if ($operation & LOCK_NB) {
if (!flock($resource, $operation, $blocked)) {
return null;
}
} else {
IoUtils::flock($resource, $operation, $blocked);
}
return new Lock($resource, $operation & LOCK_EX, $blocked, $fileName);
}
