display ip

pkg/utl/common/common.go

@@ -2,6 +2,8 @@ package common
 
 import (
 	"log"
+	"net"
+	"os"
 	"regexp"
 	"strings"
 )
@@ -20,3 +22,20 @@ func ToSnakeCase(str string) string {
 	snake = matchAllCap.ReplaceAllString(snake, "${1}_${2}")
 	return strings.ToLower(snake)
 }
+
+func GetIP() string {
+	addrs, err := net.InterfaceAddrs()
+	if err != nil {
+		os.Stderr.WriteString("Oops: " + err.Error() + "\n")
+		os.Exit(1)
+	}
+
+	for _, a := range addrs {
+		if ipnet, ok := a.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
+			if ipnet.IP.To4() != nil {
+				return ipnet.IP.String()
+			}
+		}
+	}
+	return ""
+}

pkg/utl/server/server.go

@@ -1,8 +1,11 @@
 package server
 
 import (
+	"fmt"
 	"os"
 
+	"wallet-api/pkg/utl/common"
+
 	"github.com/gin-gonic/gin"
 )
 
@@ -16,6 +19,10 @@ func Start(r *gin.Engine) *gin.Engine {
 	if port == "" {
 		port = "4000"
 	}
-	r.Run(":" + port)
+	err := r.Run(":" + port)
+	if err != nil {
+		msg := fmt.Sprintf("Running on %s:%s", common.GetIP(), port)
+		println(msg)
+	}
 	return r
 }