snapshot of https://github.com/go-chi/chi.git (master, 2026-09-15; blobs > 131072B omitted)

_examples/graceful/main.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"log"
+	"net/http"
+	"os/signal"
+	"syscall"
+	"time"
+
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/chi/v5/middleware"
+)
+
+func main() {
+	// The HTTP Server
+	server := &http.Server{Addr: "0.0.0.0:3333", Handler: service()}
+
+	// Create context that listens for the interrupt signal
+	ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
+	defer stop()
+
+	// Run server in the background
+	go func() {
+		if err := server.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
+			log.Fatal(err)
+		}
+	}()
+
+	// Listen for the interrupt signal
+	<-ctx.Done()
+
+	// Create shutdown context with 30-second timeout
+	shutdownCtx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	// Trigger graceful shutdown
+	if err := server.Shutdown(shutdownCtx); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func service() http.Handler {
+	r := chi.NewRouter()
+
+	r.Use(middleware.RequestID)
+	r.Use(middleware.Logger)
+
+	r.Get("/", func(w http.ResponseWriter, r *http.Request) {
+		w.Write([]byte("sup"))
+	})
+
+	r.Get("/slow", func(w http.ResponseWriter, r *http.Request) {
+		// Simulates some hard work.
+		//
+		// We want this handler to complete successfully during a shutdown signal,
+		// so consider the work here as some background routine to fetch a long-running
+		// search query to find as many results as possible, but, instead we cut it short
+		// and respond with what we have so far. How a shutdown is handled is entirely
+		// up to the developer, as some code blocks are preemptible, and others are not.
+		time.Sleep(5 * time.Second)
+
+		w.Write([]byte(fmt.Sprintf("all done.\n")))
+	})
+
+	return r
+}