Run multiple service using Gin

See the question and try the following example:

  1. package main
  3. import (
  4.     "log"
  5.     "net/http"
  6.     "time"
  8.     "github.com/gin-gonic/gin"
  9.     "golang.org/x/sync/errgroup"
  10. )
  12. var (
  13.     g errgroup.Group
  14. )
  16. func router01() http.Handler {
  17.     e := gin.New()
  18.     e.Use(gin.Recovery())
  19.     e.GET("/", func(c *gin.Context) {
  20.         c.JSON(
  21.             http.StatusOK,
  22.             gin.H{
  23.                 "code":  http.StatusOK,
  24.                 "error": "Welcome server 01",
  25.             },
  26.         )
  27.     })
  29.     return e
  30. }
  32. func router02() http.Handler {
  33.     e := gin.New()
  34.     e.Use(gin.Recovery())
  35.     e.GET("/", func(c *gin.Context) {
  36.         c.JSON(
  37.             http.StatusOK,
  38.             gin.H{
  39.                 "code":  http.StatusOK,
  40.                 "error": "Welcome server 02",
  41.             },
  42.         )
  43.     })
  45.     return e
  46. }
  48. func main() {
  49.     server01 := &http.Server{
  50.         Addr:         ":8080",
  51.         Handler:      router01(),
  52.         ReadTimeout:  5 * time.Second,
  53.         WriteTimeout: 10 * time.Second,
  54.     }
  56.     server02 := &http.Server{
  57.         Addr:         ":8081",
  58.         Handler:      router02(),
  59.         ReadTimeout:  5 * time.Second,
  60.         WriteTimeout: 10 * time.Second,
  61.     }
  63.     g.Go(func() error {
  64.         return server01.ListenAndServe()
  65.     })
  67.     g.Go(func() error {
  68.         return server02.ListenAndServe()
  69.     })
  71.     if err := g.Wait(); err != nil {
  72.         log.Fatal(err)
  73.     }
  74. }