实现监控节点在线状态

internal/const/const_demo.go

@@ -0,0 +1,7 @@
+// +build demo
+
+package teaconst
+
+const (
+	IsDemo = true
+)

internal/const/const_normal.go

@@ -0,0 +1,7 @@
+// +build !demo
+
+package teaconst
+
+const (
+	IsDemo = false
+)