add graceful shutdown

server.go

@@ -9,6 +9,7 @@ import (
 	"net/http"
 	"net/url"
 	"os"
+	"os/signal"
 	"time"
 
 	"github.com/go-playground/validator/v10"
@@ -137,7 +138,24 @@ func main() {
 	e.Static("/assets", "audon-fe/dist/assets")
 	e.File("/*", "audon-fe/dist/index.html")
 
-	e.Logger.Debug(e.Start(":8100"))
+	// use anonymous func to support graceful shutdown
+	go func() {
+		if err := e.Start(":1323"); err != nil && err != http.ErrServerClosed {
+			e.Logger.Fatal("shutting down the server")
+		}
+	}()
+
+	// Wait for interrupt signal to gracefully shutdown the server with a timeout of 10 seconds.
+	// Use a buffered channel to avoid missing signals as recommended for signal.Notify
+	quit := make(chan os.Signal, 1)
+	signal.Notify(quit, os.Interrupt)
+	<-quit
+	shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 10*time.Second)
+	e.Logger.Print("Attempting graceful shutdown")
+	defer shutdownCancel()
+	if err := e.Shutdown(shutdownCtx); err != nil {
+		e.Logger.Fatal(err)
+	}
 }
 
 func (t *Template) Render(w io.Writer, name string, data interface{}, c echo.Context) error {