func main()

in operator/main.go [57:257]
193 lines of code
32 McCabe index (conditional complexity)

func main() {
	var configFile string
	flag.StringVar(&configFile, "config", "",
		"The controller will load its initial configuration from this file. "+
			"Omit this flag to use the default configuration values. "+
			"Command-line flags override configuration from this file.")
	opts := zap.Options{
		Development: true,
	}
	opts.BindFlags(flag.CommandLine)
	flag.Parse()

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

	var err error
	options := &config.Config{}
	if configFile != "" {
		options, err = config.ParseFile(configFile)
		if err != nil {
			setupLog.Error(err, "unable to load the config file")
			os.Exit(1)
		}
	}
	o := options.ManagerOptions()
	o.Scheme = scheme
	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), *o)
	if err != nil {
		setupLog.Error(err, "unable to start manager")
		os.Exit(1)
	}
	if err = (&operatorcontroller.OAPServerReconciler{
		Client:   mgr.GetClient(),
		Scheme:   mgr.GetScheme(),
		FileRepo: manifests.NewRepo("oapserver"),
		Recorder: mgr.GetEventRecorderFor("oapserver-controller"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "OAPServer")
		os.Exit(1)
	}
	if err = (&operatorcontroller.UIReconciler{
		Client:   mgr.GetClient(),
		Scheme:   mgr.GetScheme(),
		FileRepo: manifests.NewRepo("ui"),
		Recorder: mgr.GetEventRecorderFor("ui-controller"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "UI")
		os.Exit(1)
	}
	if err = (&operatorcontroller.FetcherReconciler{
		Client:   mgr.GetClient(),
		Scheme:   mgr.GetScheme(),
		FileRepo: manifests.NewRepo("fetcher"),
		Recorder: mgr.GetEventRecorderFor("fetcher-controller"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "Fetcher")
		os.Exit(1)
	}
	if err = (&operatorcontroller.StorageReconciler{
		Client:     mgr.GetClient(),
		Scheme:     mgr.GetScheme(),
		FileRepo:   manifests.NewRepo("storage"),
		RestConfig: mgr.GetConfig(),
		Recorder:   mgr.GetEventRecorderFor("storage-controller"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "Storage")
		os.Exit(1)
	}
	if err = (&operatorcontroller.JavaAgentReconciler{
		Client:   mgr.GetClient(),
		Scheme:   mgr.GetScheme(),
		FileRepo: manifests.NewRepo("injector"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "JavaAgent")
		os.Exit(1)
	}

	if err = (&operatorcontrollers.SatelliteReconciler{
		Client:   mgr.GetClient(),
		Scheme:   mgr.GetScheme(),
		FileRepo: manifests.NewRepo("satellite"),
		Recorder: mgr.GetEventRecorderFor("satellite-controller"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "Satellite")
		os.Exit(1)
	}
	if err = (&operatorcontrollers.SwAgentReconciler{
		Client: mgr.GetClient(),
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "SwAgent")
		os.Exit(1)
	}
	if err = (&operatorcontrollers.OAPServerConfigReconciler{
		Client: mgr.GetClient(),
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "OAPServerConfig")
		os.Exit(1)
	}
	if err = (&operatorcontrollers.OAPServerDynamicConfigReconciler{
		Client: mgr.GetClient(),
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "OAPServerDynamicConfig")
		os.Exit(1)
	}

	if err = (&operatorcontrollers.BanyanDBReconciler{
		Client:   mgr.GetClient(),
		Scheme:   mgr.GetScheme(),
		FileRepo: manifests.NewRepo("banyandb"),
		Recorder: mgr.GetEventRecorderFor("banyandb-controller"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "BanyanDB")
		os.Exit(1)
	}
	if err = (&operatorcontrollers.EventExporterReconciler{
		Client:   mgr.GetClient(),
		Scheme:   mgr.GetScheme(),
		FileRepo: manifests.NewRepo("eventexporter"),
		Recorder: mgr.GetEventRecorderFor("eventexporter-controller"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "EventExporter")
		os.Exit(1)
	}
	//+kubebuilder:scaffold:builder
	if os.Getenv("ENABLE_WEBHOOKS") != "false" {
		if err = (&operatorv1alpha1.OAPServer{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "OAPServer")
			os.Exit(1)
		}
		if err = (&operatorv1alpha1.UI{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "UI")
			os.Exit(1)
		}
		if err = (&operatorv1alpha1.Fetcher{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "Fetcher")
			os.Exit(1)
		}
		if err = (&operatorv1alpha1.Storage{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "Storage")
			os.Exit(1)
		}
		if err = (&operatorv1alpha1.JavaAgent{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "JavaAgent")
			os.Exit(1)
		}
		if err = (&operatorv1alpha1.Satellite{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "Satellite")
			os.Exit(1)
		}
		if err = (&operatorv1alpha1.SwAgent{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "SwAgent")
			os.Exit(1)
		}
		if err = (&operatorv1alpha1.OAPServerConfig{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "OAPServerConfig")
			os.Exit(1)
		}
		if err = (&operatorv1alpha1.OAPServerDynamicConfig{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "OAPServerDynamicConfig")
			os.Exit(1)
		}
		if err = (&operatorv1alpha1.BanyanDB{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "BanyanDB")
			os.Exit(1)
		}
		if err = (&operatorv1alpha1.EventExporter{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "EventExporter")
			os.Exit(1)
		}
		// register a webhook to enable the java agent injector
		setupLog.Info("registering /mutate-v1-pod webhook")
		mgr.GetWebhookServer().Register("/mutate-v1-pod",
			&webhook.Admission{
				Handler: injector.NewJavaagentInjector(mgr.GetClient(), scheme)})
		setupLog.Info("/mutate-v1-pod webhook is registered")

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

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