feat: update config for prometheus

Author: minhtri6179

api/server.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"fmt"
+	"net/http"
 	"time"
 
 	"github.com/gin-contrib/cors"
@@ -53,6 +54,11 @@ func (server *Server) setupRouter() {
 
 	router.GET("/docs/*any", ginSwagger.WrapHandler(swaggerFiles.Handler))
 
+	// Ping pong tutorial prometheus
+	http.HandleFunc("/ping", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Print(w, "pong")
+	})
+
 	router.POST("/users", server.createUser)
 	router.POST("/users/login", server.loginUser)
 	// Question

pkg/tutorial.go

@@ -0,0 +1,20 @@
+package metric
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+func ping(w http.ResponseWriter, req *http.Request) {
+	pingCounter.Inc()
+	fmt.Fprintf(w, "pong")
+}
+
+var pingCounter = prometheus.NewCounter(
+	prometheus.CounterOpts{
+		Name: "ping_request_count",
+		Help: "No of request handled by Ping handler",
+	},
+)