func (self *Queue) open() error { self.Lock() defer self.Unlock() if regexp.MustCompile(`[^a-zA-Z0-9_]+`).MatchString(self.Name) { return errors.New("Queue name is not alphanumeric") } if len(self.Name) > 100 { return errors.New("Queue name is too long") } var options opt.Options options.BlockCacher = opt.NoCacher var err error self.db, err = leveldb.OpenFile(self.Path(), &options) if err != nil { return err } self.isOpened = true return self.initialize() }