// transportUUIDInStorage returns the uuid stored in storage or
// creates a new random uuid and stores it.
func transportUUIDInStorage(storage util.Storage) string {
uuid, err := storage.Get("uuid")
if len(uuid) == 0 || err != nil {
str := util.RandomHexString()
uuid = []byte(netio.MAC48Address(str))
err := storage.Set("uuid", uuid)
if err != nil {
log.Fatal(err)
}
}
return string(uuid)
}
// save stores the id, version and config
func (cfg *Config) save(storage util.Storage) {
storage.Set("uuid", []byte(cfg.id))
storage.Set("version", []byte(fmt.Sprintf("%d", cfg.version)))
storage.Set("configHash", []byte(cfg.configHash))
}