package etcd import ( "encoding/json" "github.com/go-kratos/kratos/v2/registry" ) func marshal(si *registry.ServiceInstance) (string, error) { data, err := json.Marshal(si) if err != nil { return "", err } return string(data), nil } func unmarshal(data []byte) (si *registry.ServiceInstance, err error) { err = json.Unmarshal(data, &si) return }