🎨 增加 Go 后端

backend/pkg/http/http.go

@@ -0,0 +1,48 @@
+package http
+
+import (
+	"context"
+	"github.com/gin-gonic/gin"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+func Run(r *gin.Engine, addr string) {
+
+	srv := &http.Server{
+		Addr:    addr,
+		Handler: r,
+	}
+
+	// Initializing the server in a goroutine so that
+	// it won't block the graceful shutdown handling below
+	go func() {
+		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
+			log.Fatalf("listen: %s\n", err)
+		}
+	}()
+
+	// Wait for interrupt signal to gracefully shutdown the server with
+	// a timeout of 5 seconds.
+	quit := make(chan os.Signal, 1)
+	// kill (no param) default send syscall.SIGTERM
+	// kill -2 is syscall.SIGINT
+	// kill -9 is syscall.SIGKILL but can't be catch, so don't need add it
+	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
+	<-quit
+	log.Println("Shutting down server...")
+
+	// The context is used to inform the server it has 5 seconds to finish
+	// the request it is currently handling
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	if err := srv.Shutdown(ctx); err != nil {
+		log.Fatal("Server forced to shutdown: ", err)
+	}
+
+	log.Println("Server exiting")
+}