func main()

in main.go [60:135]
64 lines of code
10 McCabe index (conditional complexity)

func main() {
	var metricsAddr string
	var enableLeaderElection bool
	var probeAddr string
	var watchNamespace string
	flag.StringVar(&watchNamespace, "watch-namespace", os.Getenv("WATCH_NAMESPACE"), "The namespace to watch, if not specified, all namespaces will be watched")
	flag.StringVar(&metricsAddr, "metrics-bind-address", ":8383", "The address the metric endpoint binds to.")
	flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
	flag.BoolVar(&enableLeaderElection, "leader-elect", false,
		"Enable leader election for controller manager. "+
			"Enabling this will ensure there is only one active controller manager.")
	opts := zap.Options{
		Development: true,
	}
	opts.BindFlags(flag.CommandLine)
	flag.Parse()

	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))

	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
		Scheme:                 scheme,
		MetricsBindAddress:     metricsAddr,
		Port:                   9443,
		HealthProbeBindAddress: probeAddr,
		LeaderElection:         enableLeaderElection,
		LeaderElectionID:       "2516c052.apache.org",
		Namespace:              watchNamespace,
	})
	if err != nil {
		setupLog.Error(err, "unable to start manager")
		os.Exit(1)
	}

	// Setup all Controllers
	if err := broker.SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to add broker controller to manager")
		os.Exit(1)
	}

	if err := console.SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to add console controller to manager")
		os.Exit(1)
	}

	if err := nameservice.SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to add nameservice controller to manager")
		os.Exit(1)
	}

	if err := topictransfer.SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to add topictransfer controller to manager")
		os.Exit(1)
	}

	if err := rmqcontroller.SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to add dledger controller to manager")
		os.Exit(1)
	}

	//+kubebuilder:scaffold:builder

	if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
		setupLog.Error(err, "unable to set up health check")
		os.Exit(1)
	}
	if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
		setupLog.Error(err, "unable to set up ready check")
		os.Exit(1)
	}

	setupLog.Info("starting manager")
	if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
		setupLog.Error(err, "problem running manager")
		os.Exit(1)
	}
}