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package cmd
import (
"context"
"log"
"net/http"
"os"
"os/signal"
"sync"
"syscall"
"time"
"github.com/gorilla/mux"
)
func Serve(srv *http.Server) {
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
log.Fatalf("Error starting server: %v\n", err)
}
}()
// 监听退出信号
ctx, cancel := context.WithCancel(context.Background())
go func() {
c := make(chan os.Signal, 1)
signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
<-c
log.Println("Received signal, gracefully shutting down...")
cancel()
}()
<-ctx.Done()
shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 5*time.Second)
defer shutdownCancel()
if err := srv.Shutdown(shutdownCtx); err != nil {
log.Printf("Error during server shutdown: %v\n", err)
}
wg.Wait()
}
type loggingMiddleware struct {
}
func (l loggingMiddleware) Middleware(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
startTime := time.Now()
defer func() {
log.Printf(
"%s %s %s %v",
r.Method,
r.URL.Path,
r.Proto,
time.Since(startTime),
)
}()
next.ServeHTTP(w, r)
})
}
// CORS 中间件
func corsMiddleware() mux.MiddlewareFunc {
allowHeaders := "Content-Type, Accept, Authorization, Origin"
allowMethods := "GET, POST, PUT, DELETE, OPTIONS"
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Access-Control-Allow-Origin", "*")
w.Header().Set("Access-Control-Allow-Methods", allowMethods)
w.Header().Set("Access-Control-Allow-Headers", allowHeaders)
// 如果是预检请求(OPTIONS),直接返回 200 OK
// if r.Method == http.MethodOptions {
// w.WriteHeader(http.StatusOK)
// return
// }
next.ServeHTTP(w, r)
})
}
}