1.治理暂态事件、波形文件记录解析功能;日志记录功能

2.设备上线、掉线日志记录

iot-access/access-boot/src/main/java/com/njcn/access/service/ICsDeviceOnlineLogsService.java

@@ -0,0 +1,23 @@
+package com.njcn.access.service;
+
+import com.baomidou.mybatisplus.extension.service.IService;
+import com.njcn.access.pojo.po.CsDeviceOnlineLogs;
+
+/**
+ * <p>
+ * 设备状态日志表，记录设备掉线上线的情况 服务类
+ * </p>
+ *
+ * @author xuyang
+ * @since 2023-09-08
+ */
+public interface ICsDeviceOnlineLogsService extends IService<CsDeviceOnlineLogs> {
+
+    /**
+     * 根据nDid查询最新的一条记录
+     * @param nDid
+     * @return
+     */
+    CsDeviceOnlineLogs findLastData(String nDid);
+
+}

iot-access/access-boot/src/main/java/com/njcn/access/service/impl/CsDeviceOnlineLogsServiceImpl.java

@@ -0,0 +1,25 @@
+package com.njcn.access.service.impl;
+
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.njcn.access.mapper.CsDeviceOnlineLogsMapper;
+import com.njcn.access.pojo.po.CsDeviceOnlineLogs;
+import com.njcn.access.service.ICsDeviceOnlineLogsService;
+import org.springframework.stereotype.Service;
+
+/**
+ * <p>
+ * 设备状态日志表，记录设备掉线上线的情况 服务实现类
+ * </p>
+ *
+ * @author xuyang
+ * @since 2023-09-08
+ */
+@Service
+public class CsDeviceOnlineLogsServiceImpl extends ServiceImpl<CsDeviceOnlineLogsMapper, CsDeviceOnlineLogs> implements ICsDeviceOnlineLogsService {
+
+    @Override
+    public CsDeviceOnlineLogs findLastData(String nDid) {
+        return this.lambdaQuery().eq(CsDeviceOnlineLogs::getNdid,nDid).orderByDesc(CsDeviceOnlineLogs::getOnlineTime).last("LIMIT 1").one();
+    }
+}