if err != nil {
			return nil, err
		}
		for id, args := range mqttTargets {
			if !args.Enable {
				continue
			}
			args.RootCAs = transport.TLSClientConfig.RootCAs
			t, err := target.NewMQTTTarget(id, args, logOnceIf)
			if err != nil {
				return nil, err
			}
			targets = append(targets, t)
		}
	case config.NotifyMySQLSubSys:
		mysqlTargets, err := GetNotifyMySQL(cfg[config.NotifyMySQLSubSys])