kubernetes-namespace-rolebinding-operator-main

main.go

func main() {
	// Set logging output to standard console out
	log.SetOutput(os.Stdout)

	sigs := make(chan os.Signal, 1) // Create channel to receive OS signals
	stop := make(chan struct{})     // Create channel to receive stop signal

	signal.Notify(sigs, os.Interrupt, syscall.SIGTERM, syscall.SIGINT) // Register the sigs channel to receieve SIGTERM

	wg := &sync.WaitGroup{} // Goroutines can add themselves to this to be waited on so that they finish

	runOutsideCluster := flag.Bool("run-outside-cluster", false, "Set this flag when running outside of the cluster.")
	flag.Parse()
	// Create clientset for interacting with the kubernetes cluster
	clientset, err := newClientSet(*runOutsideCluster)

	if err != nil {
		panic(err.Error())
	}

	controller.NewNamespaceController(clientset).Run(stop, wg)

	<-sigs // Wait for signals (this hangs until a signal arrives)
	log.Printf("Shutting down...")

	close(stop) // Tell goroutines to stop themselves
	wg.Wait()   // Wait for all to be stopped
}