[TD-933] enable sqls like : alter dnode 1 monitor 1

src/common/src/tglobal.c

@@ -199,6 +199,9 @@ int32_t sDebugFlag = 135;
 int32_t wDebugFlag = 135;
 int32_t tsdbDebugFlag = 131;
 
+int32_t (*monitorStartSystemFp)() = NULL;
+void (*monitorStopSystemFp)() = NULL;
+
 static pthread_once_t tsInitGlobalCfgOnce = PTHREAD_ONCE_INIT;
 
 void taosSetAllDebugFlag() {
@@ -248,11 +251,17 @@ bool taosCfgDynamicOptions(char *msg) {
     *((int32_t *)cfg->ptr) = vint;
 
     if (strncasecmp(cfg->option, "monitor", olen) == 0) {
-      // if (0 == vint) {
-      //   monitorStartSystem();
-      // } else {
-      //   monitorStopSystem();
-      // }
+      if (1 == vint) {
+        if (monitorStartSystemFp) {
+          (*monitorStartSystemFp)();
+          uInfo("monitor is enabled");
+        }
+      } else {
+        if (monitorStopSystemFp) {
+          (*monitorStopSystemFp)();
+          uInfo("monitor is disabled");
+        }
+      }
       return true;
     }
 

src/plugins/monitor/src/monitorMain.c

@@ -76,6 +76,8 @@ static void monitorInitDatabase();
 static void monitorInitDatabaseCb(void *param, TAOS_RES *result, int32_t code);
 static void monitorStartTimer();
 static void monitorSaveSystemInfo();
+extern int32_t (*monitorStartSystemFp)();
+extern void (*monitorStopSystemFp)();
 
 static void monitorCheckDiskUsage(void *para, void *unused) {
   taosGetDisk();
@@ -85,6 +87,8 @@ static void monitorCheckDiskUsage(void *para, void *unused) {
 int32_t monitorInitSystem() {
   taos_init();
   taosTmrReset(monitorCheckDiskUsage, CHECK_INTERVAL, NULL, tscTmr, &tsMonitorConn.diskTimer);
+  monitorStartSystemFp = monitorStartSystem;
+  monitorStopSystemFp = monitorStopSystem;
   return 0;
 }