Create buffered signals channel

cmd/context.go

@@ -1,20 +0,0 @@
-package cmd
-
-import (
-	"context"
-	"os"
-	"os/signal"
-	"syscall"
-)
-
-// ContextWithSignal creates a context canceled when SIGINT or SIGTERM are notified.
-func ContextWithSignal(ctx context.Context) context.Context {
-	newCtx, cancel := context.WithCancel(ctx)
-	signals := make(chan os.Signal)
-	signal.Notify(signals, syscall.SIGINT, syscall.SIGTERM)
-	go func() {
-		<-signals
-		cancel()
-	}()
-	return newCtx
-}

cmd/traefik/traefik.go

@@ -6,9 +6,11 @@ import (
 	stdlog "log"
 	"net/http"
 	"os"
+	"os/signal"
 	"path/filepath"
 	"sort"
 	"strings"
+	"syscall"
 	"time"
 
 	"github.com/coreos/go-systemd/daemon"
@@ -119,7 +121,7 @@ func runCmd(staticConfiguration *static.Configuration) error {
 		return err
 	}
 
-	ctx := cmd.ContextWithSignal(context.Background())
+	ctx, _ := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
 
 	if staticConfiguration.Experimental != nil && staticConfiguration.Experimental.DevPlugin != nil {
 		var cancel context.CancelFunc