redis server "online" key value is not entered

[rlarmsqn]

The "online" key value is not entered in the redis server, so when running the mission, "The device is offline, pleas try again later." An error occurs. Why can't I register online with redis? HMS continues to fly through mqtt

 @Transactional(isolation = Isolation.READ_UNCOMMITTED)
    @Override
    public TopicRequestsResponse<MqttReply<FlighttaskResourceGetResponse>> flighttaskResourceGet(TopicRequestsRequest<FlighttaskResourceGetRequest> response, MessageHeaders headers) {
        String jobId = response.getData().getFlightId();

        Optional<DeviceDTO> deviceOpt = deviceRedisService.getDeviceOnline(response.getGateway());
        if (deviceOpt.isEmpty()) {
            log.error("The device is offline, please try again later.");
            return new TopicRequestsResponse().setData(MqttReply.error(CommonErrorEnum.DEVICE_OFFLINE));
        }
        Optional<WaylineJobDTO> waylineJobOpt = waylineJobService.getJobByJobId(deviceOpt.get().getWorkspaceId(), jobId);
        if (waylineJobOpt.isEmpty()) {
            log.error("The wayline job does not exist.");
            return new TopicRequestsResponse().setData(MqttReply.error(CommonErrorEnum.ILLEGAL_ARGUMENT));
        }

        WaylineJobDTO waylineJob = waylineJobOpt.get();

        // get wayline file
        Optional<GetWaylineListResponse> waylineFile = waylineFileService.getWaylineByWaylineId(waylineJob.getWorkspaceId(), waylineJob.getFileId());
        if (waylineFile.isEmpty()) {
            log.error("The wayline file does not exist.");
            return new TopicRequestsResponse().setData(MqttReply.error(CommonErrorEnum.ILLEGAL_ARGUMENT));
        }
        // get file url
        try {
            URL url = waylineFileService.getObjectUrl(waylineJob.getWorkspaceId(), waylineFile.get().getId());
            return new TopicRequestsResponse<MqttReply<FlighttaskResourceGetResponse>>().setData(
                    MqttReply.success(new FlighttaskResourceGetResponse()
                            .setFile(new FlighttaskFile()
                                    .setUrl(url.toString())
                                    .setFingerprint(waylineFile.get().getSign()))));
        } catch (SQLException | NullPointerException e) {
            e.printStackTrace();
            return new TopicRequestsResponse().setData(MqttReply.error(CommonErrorEnum.SYSTEM_ERROR));
        }
    }

[huseyinozdemir]

The error occurs because the device's online status isn't being registered in Redis. As a result, when the system calls deviceRedisService.getDeviceOnline(), it returns an empty value, triggering the error message "The device is offline, please try again later." Meanwhile, HMS continues with the flight task via MQTT because its process is not directly blocked by this Redis check.

In short, the online key is missing in Redis, so the system incorrectly determines that the device is offline, even though HMS proceeds with MQTT operations.