chanched handlers

cmd/pkgdash/main.go

@@ -2,13 +2,26 @@ package main
 
 import (
 	"context"
+	"os"
+	"os/signal"
+	"syscall"
 
-	"go.unistack.org/micro/v3/logger"
+	"go.unistack.org/micro/v4/logger"
 	"go.unistack.org/unistack-org/pkgdash/service"
 )
 
 func main() {
-	ctx := context.Background()
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	ch := make(chan os.Signal, 1)
+	signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM)
+
+	go func() {
+		sig := <-ch
+		logger.Infof(ctx, "handle signal %v, exiting", sig)
+		cancel()
+	}()
 
 	svc, err := service.NewService(ctx)
 	if err != nil {