func main()

in main.go [40:85]
34 lines of code
4 McCabe index (conditional complexity)

func main() {
	var parameters WhSvrParameters

	flag.IntVar(&parameters.port, "port", 443, "Webhook server port.")
	flag.StringVar(&parameters.certFile, "tlsCertFile", "/etc/webhook/certs/cert.pem", "File containing the x509 Certificate for HTTPS.")
	flag.StringVar(&parameters.keyFile, "tlsKeyFile", "/etc/webhook/certs/key.pem", "File containing the x509 private key to --tlsCertFile.")
	flag.Parse()

	keyPair, err := tls.LoadX509KeyPair(parameters.certFile, parameters.keyFile)
	if err != nil {
		fmt.Errorf("Error loading key pair: %v", err)
	}

	server := &http.Server{
		Addr:      fmt.Sprintf(":%v", parameters.port),
		TLSConfig: &tls.Config{Certificates: []tls.Certificate{keyPair}},
	}

	client, err := newKubernetesClient()

	if err != nil {
		fmt.Errorf("Error creating Kubernetes client: %v", err)
	}

	whsvr := controller.NewWebhookServer(server, client)

	mux := http.NewServeMux()
	mux.HandleFunc("/mutate", whsvr.Handler)
	server.Handler = mux

	go func() {
		if err := server.ListenAndServeTLS("", ""); err != nil {
			fmt.Errorf("Error listening and serving webhook server: %v", err)
		}
	}()

	signalChan := make(chan os.Signal, 1)
	signal.Notify(signalChan, syscall.SIGINT, syscall.SIGTERM)
	<-signalChan

	log.Println("Got OS shutdown signal, shutting down webhook server gracefully")

	shutdownCtx, _ := context.WithTimeout(context.Background(), 10 * time.Second)
	
	server.Shutdown(shutdownCtx)
}