sre index handlerIndex

3 years ago · 4aa8ffc5d1
parent 2e58d7e19e
commit 4aa8ffc5d1
1 changed files with 14 additions and 3 deletions
--- a/main.go
+++ b/main.go
@ -66,6 +66,9 @@ var (
 		Buckets: prometheus.ExponentialBuckets(1, 2, 20), // 初始值为1，指数为2增长，20个取值
 	}, []string{"request_time"})
 	// 不同的桶根据具体情况而定
+
+	metricsPath = flag.String("web.telemetry-path", "/metrics",
+		"Path under which to expose metrics")
 )

 func init() {
@ -80,7 +83,7 @@ func init() {
 func main() {
 	flag.Parse()
 	r := mux.NewRouter()
-	r.HandleFunc("/", handler)
+	r.HandleFunc("/", handlerIndex)
 	r.Use(metricsMiddleware)

 	r.Handle("/metrics", promhttp.HandlerFor(
@ -107,10 +110,18 @@ func metricsMiddleware(next http.Handler) http.Handler {
 	})
 }

-func handler(w http.ResponseWriter, r *http.Request) {
+func handlerIndex(w http.ResponseWriter, r *http.Request) {
 	x := rand.Intn(3)
 	time.Sleep(time.Duration(x) * time.Second)
-	_, _ = w.Write([]byte("handler response"))
+	//_, _ = w.Write([]byte("handler response"))
+	_, _ = w.Write([]byte(`<html>
+             <head><title>SRE Promethus Exporter</title></head>
+             <body>
+             <h1>SRE Promethus Exporter</h1>
+             <p><a href='` + *metricsPath + `'>Metrics</a></p>
+             </body>
+             </html>`))
+
 	fmt.Println("print handler")
 }