func parseInstance()

in internal/commands/interceptor/instance.go [62:97]


func parseInstance(required bool, idFlagName, nameFlagName, serviceIDFlagName string) func(*cli.Context) error {
	return func(ctx *cli.Context) error {
		id := ctx.String(idFlagName)
		name := ctx.String(nameFlagName)
		serviceID := ctx.String(serviceIDFlagName)

		if id == "" && name == "" {
			if required {
				return fmt.Errorf(`either flags "--%s" or "--%s" must be given`, idFlagName, nameFlagName)
			}
			return nil
		}

		if id != "" {
			parts := strings.Split(id, "_")
			if len(parts) != 2 {
				return fmt.Errorf("invalid instance id, cannot be splitted into 2 parts. %v", id)
			}
			s, err := base64.StdEncoding.DecodeString(parts[1])
			if err != nil {
				return err
			}
			name = string(s)
		} else if name != "" {
			if serviceID == "" {
				return fmt.Errorf(`"--%s" is specified but its related service name or id is not given`, nameFlagName)
			}
			id = serviceID + "_" + b64enc(name)
		}

		if err := ctx.Set(idFlagName, id); err != nil {
			return err
		}
		return ctx.Set(nameFlagName, name)
	}
}