视图库对接系列(GA-T 1400)四、视图库对接系列(本级)注册

视图库对接系列(本级)注册

在之前的步骤中，我们已经把项目大体的架构已经写出来了。那我们就来实现注册接口。

GA-T 1400中的步骤如下：

在这里插入图片描述
这里的话，我们实现的简单点，我们不进去鉴权，也就是设备或平台找我们注册的话，我们直接返回成功，不进行验证。
如果需要鉴权的话可看我的另外一篇文档。
视图库对接系列(GA-T 1400)七、视图库对接系列(本级)注册(包含鉴权)

注册前准备

因为视图库对接主要是解析、验证解析。所以我们先暂时把对应的文件创建好，这里的话我就直接先放截图，到时候有需要的直接加群拿，我把项目放在群里把。
在这里插入图片描述

注册

service层

我把注册、注销、保活、校时的接口一起写好，后续我们直接实现就可以了。

在common中添加ViewLibCommonRequestService

public interface ViewLibCommonRequestService {

    //注册
    ResponseStatusObject register(DeviceViewBaseParam param);


    //注销
    ResponseStatusObject unregister(DeviceViewBaseParam param);

    //保活
    ResponseStatusObject keepalive(DeviceViewBaseParam param);

    //校时
    ResponseStatusObject time(DeviceViewBaseParam param);
}

在server中添加PlatformService继承ViewLibCommonRequestService就可以了

public interface PlatformService extends ViewLibCommonRequestService {
}

service层实现

@Service
public class PlatformServiceImpl implements PlatformService, TaskService {

    @Resource
    private IViewLibraryDomainDeviceService viewLibraryDomainDeviceService;

    /**
     * 心跳key
     */
    public static final String TASK_CASCADE_KEEP_KEY = "platform_keep_alive";

    /**
     * 默认心跳周期
     */
    public static final Integer DEFAULT_HEARTBEAT_CYCLE = 3;
    /**
     * 默认最大心跳超时时间
     */
    public static final Integer DEFAULT_MAX_HEARTBEAT_TIMEOUT_NUM = 60;

    @Override
    public ResponseStatusObject register(DeviceViewBaseParam param, String url) {
        int heartbeatCycle = DEFAULT_HEARTBEAT_CYCLE;
        int maxHeartbeatTimeoutNum = DEFAULT_MAX_HEARTBEAT_TIMEOUT_NUM;
        // 保存到domain_platform 中 设备id，状态(注册默认在线，保活时间取最新时间)
        ViewLibraryDomainDevice domainPlatform = viewLibraryDomainDeviceService.selectByDomainDeviceId(param.getDeviceId());
        if (domainPlatform == null) {
            viewLibraryDomainDeviceService.save(new ViewLibraryDomainDevice(param.getDeviceId(), PlatformStatus.ONLINE.getValue(), LocalDateTime.now(), DEFAULT_HEARTBEAT_CYCLE, DEFAULT_MAX_HEARTBEAT_TIMEOUT_NUM));
        } else {
            viewLibraryDomainDeviceService.updateRegisterStatus(param.getDeviceId(), PlatformStatus.ONLINE.getValue());
            heartbeatCycle = domainPlatform.getHeartbeatCycle();
            maxHeartbeatTimeoutNum = domainPlatform.getMaxHeartbeatTimeoutNum();
        }
        ScheduleUtil.start(
                new ScheduleTask(TASK_CASCADE_KEEP_KEY + param.getDeviceId(), this, ""),
                new Date(System.currentTimeMillis() + heartbeatCycle * maxHeartbeatTimeoutNum * 1000 * 1000)
        );
        return ResponseStatusObject.initSuccess(url, param, "注册成功");
    }

    @Override
    public ResponseStatusObject unregister(DeviceViewBaseParam param, String url) {
        return null;
    }

    @Override
    public ResponseStatusObject keepalive(DeviceViewBaseParam param, String url) {
        return null;
    }

    @Override
    public ResponseStatusObject time(DeviceViewBaseParam param, String url) {
        return null;
    }

    @Override
    public void work(String id, String keyword) {
        String platformId = id.replace(TASK_CASCADE_KEEP_KEY, "");
        ViewLibraryDomainDevice viewLibraryDomainPlatform = viewLibraryDomainDeviceService.selectByDomainDeviceId(platformId);
        if (viewLibraryDomainPlatform != null) {
            LocalDateTime latestKeepAliveTime = viewLibraryDomainPlatform.getLatestKeepAliveTime();
            if (latestKeepAliveTime == null) {
                viewLibraryDomainDeviceService.updateRegisterStatus(viewLibraryDomainPlatform.getDeviceId(), PlatformStatus.LOGGED_OUT.getValue());
                return;
            }
            if (DateUtil.isAfterAddingSeconds(LocalDateTime.now(), latestKeepAliveTime, viewLibraryDomainPlatform.getMaxHeartbeatTimeoutNum() * viewLibraryDomainPlatform.getHeartbeatCycle())) {
                viewLibraryDomainDeviceService.updateRegisterStatus(viewLibraryDomainPlatform.getDeviceId(), PlatformStatus.LOGGED_OUT.getValue());
            }


        }
    }

这里有个TaskService实现，我稍微说一下。因为设备需要每隔一段时间给我们一个心跳，所以我们封装了一个定时器回调，回调方法是work。每隔多久对比一下时间，将状态进行更改。

设备层service

public interface IViewLibraryDomainDeviceService extends IService<ViewLibraryDomainDevice> {
    void updateRegisterStatus(String deviceId,Integer status);

    ViewLibraryDomainDevice selectByDomainDeviceId(String deviceId);
}

设备层service实现

@Service
public class ViewLibraryDomainDeviceServiceImpl extends ServiceImpl<ViewLibraryDomainDeviceMapper, ViewLibraryDomainDevice> implements IViewLibraryDomainDeviceService {

    @Override
    public void updateRegisterStatus(String deviceId, Integer status) {
        LambdaUpdateWrapper<ViewLibraryDomainDevice> queryWrapper = Wrappers.lambdaUpdate();
        queryWrapper.eq(ViewLibraryDomainDevice::getDeviceId,deviceId);
        ViewLibraryDomainDevice domainPlatform = new ViewLibraryDomainDevice();
        domainPlatform.setDeviceStatus(status);
        domainPlatform.setLatestKeepAliveTime(LocalDateTime.now());
        this.baseMapper.update(domainPlatform,queryWrapper);
    }

    @Override
    public ViewLibraryDomainDevice selectByDomainDeviceId(String deviceId) {
        LambdaQueryWrapper<ViewLibraryDomainDevice> queryWrapper = Wrappers.lambdaQuery();
        queryWrapper.eq(ViewLibraryDomainDevice::getDeviceId, deviceId);
        return  this.baseMapper.selectOne(queryWrapper);
    }
}

##Controller层

@RestController
@CrossOrigin(value = "*", maxAge = 3600)
@RequestMapping("/VIID")
@RequestLog(logReturn = true)
public class PlatformController {
    

    @Resource
    private PlatformService platformService;

    //-------------------------------------------------设备或平台请求------------------------------------------

    @PostMapping("/System/Register")
    public ResponseStatusObject register(@RequestBody RegisterObjectRequest param, HttpServletRequest request, HttpServletResponse response) {
        String userIdentify = CommonUtlis.getUserIdentify(request);
        //{"RegisterObject":{"RequestURL":"/VIID/System/Register","StatusCode":0,"StatusString":"注册成功","Id":"33048300005030000237","LocalTime":"20220826085911"}}
        if(param == null || param.getDeviceBaseParam()== null || StringUtils.isEmpty(param.getDeviceBaseParam().getId())) {
            return ResponseStatusObject.initFailCode(request.getRequestURI(),userIdentify,String.valueOf( StatusCodeEnum.PLATFORM_PARAMETER_FAIL.getCode()));
        }
        return platformService.register(param.getDeviceBaseParam(),request.getRequestURI());

    }

    



}