[TD-5861]<feature>:add uptime and dnodeId

src/common/inc/tglobal.h

@@ -41,6 +41,7 @@ extern char     tsArbitrator[];
 extern int8_t   tsArbOnline;
 extern int64_t  tsArbOnlineTimestamp;
 extern int32_t  tsDnodeId;
+extern int64_t  tsDnodeStartTime;
 
 // common
 extern int      tsRpcTimer;

src/common/src/tglobal.c

@@ -46,6 +46,7 @@ int8_t   tsArbOnline = 0;
 int64_t  tsArbOnlineTimestamp = TSDB_ARB_DUMMY_TIME;
 char     tsEmail[TSDB_FQDN_LEN] = {0};
 int32_t  tsDnodeId = 0;
+int64_t  tsDnodeStartTime = 0;
 
 // common
 int32_t tsRpcTimer       = 300;

src/dnode/src/dnodeMain.c

@@ -195,6 +195,7 @@ int32_t dnodeInitSystem() {
   dnodeSetRunStatus(TSDB_RUN_STATUS_RUNING);
   moduleStart();
 
+  tsDnodeStartTime = taosGetTimestampMs();
   dnodeReportStep("TDengine", "initialized successfully", 1);
   dInfo("TDengine is initialized successfully");
 

src/plugins/http/src/httpMetricsHandle.c

@@ -30,6 +30,21 @@ bool metricsProcessRequest(HttpContext* pContext) {
   httpWriteJsonBufHead(jsonBuf);
 
   httpJsonToken(jsonBuf, JsonObjStt);
+  {
+      int32_t dnodeId = dnodeGetDnodeId();
+      char* keyDnodeId = "dnode_id";
+      httpJsonPairIntVal(jsonBuf, keyDnodeId, strlen(keyDnodeId), dnodeId);
+  }
+
+  {
+     if (tsDnodeStartTime != 0) {
+       int64_t now = taosGetTimestampMs();
+       int64_t upTime = now-tsDnodeStartTime;
+       char* keyUpTime = "up_time";
+       httpJsonPairInt64Val(jsonBuf, keyUpTime, strlen(keyUpTime), upTime);
+     }
+  }
+
   {
     int32_t cpuCores = taosGetCpuCores();
     char* keyCpuCores = "cpu_cores";