nchain/cmd/main.go

package main

import (
	"crypto/tls"
	"flag"
	"os"

	_ "k8s.io/client-go/plugin/pkg/client/auth"

	"k8s.io/apimachinery/pkg/runtime"
	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
	ctrl "sigs.k8s.io/controller-runtime"
	"sigs.k8s.io/controller-runtime/pkg/healthz"
	"sigs.k8s.io/controller-runtime/pkg/log/zap"
	"sigs.k8s.io/controller-runtime/pkg/metrics/filters"
	metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
	"sigs.k8s.io/controller-runtime/pkg/webhook"

	v1alpha1 "github.com/hanzoai/nchain/api/v1alpha1"
	"github.com/hanzoai/nchain/internal/controller"
)

var (
	scheme   = runtime.NewScheme()
	setupLog = ctrl.Log.WithName("setup")
)

func init() {
	utilruntime.Must(clientgoscheme.AddToScheme(scheme))
	utilruntime.Must(v1alpha1.AddToScheme(scheme))
}

func main() {
	var metricsAddr string
	var enableLeaderElection bool
	var probeAddr string
	var secureMetrics bool
	var enableHTTP2 bool
	var tlsOpts []func(*tls.Config)

	flag.StringVar(&metricsAddr, "metrics-bind-address", "0", "The address the metrics 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.")
	flag.BoolVar(&secureMetrics, "metrics-secure", true,
		"If set, the metrics endpoint is served securely via HTTPS.")
	flag.BoolVar(&enableHTTP2, "enable-http2", false,
		"If set, HTTP/2 will be enabled for the metrics and webhook servers.")

	opts := zap.Options{Development: true}
	opts.BindFlags(flag.CommandLine)
	flag.Parse()

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

	if !enableHTTP2 {
		tlsOpts = append(tlsOpts, func(c *tls.Config) {
			setupLog.Info("Disabling HTTP/2")
			c.NextProtos = []string{"http/1.1"}
		})
	}

	webhookServer := webhook.NewServer(webhook.Options{TLSOpts: tlsOpts})

	metricsServerOptions := metricsserver.Options{
		BindAddress:   metricsAddr,
		SecureServing: secureMetrics,
		TLSOpts:       tlsOpts,
	}
	if secureMetrics {
		metricsServerOptions.FilterProvider = filters.WithAuthenticationAndAuthorization
	}

	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
		Scheme:                 scheme,
		Metrics:                metricsServerOptions,
		WebhookServer:          webhookServer,
		HealthProbeBindAddress: probeAddr,
		LeaderElection:         enableLeaderElection,
		LeaderElectionID:       "nchain.hanzo.ai",
	})
	if err != nil {
		setupLog.Error(err, "Failed to start manager")
		os.Exit(1)
	}

	// Register all controllers.
	if err := (&controller.NodeClusterReconciler{
		Client: mgr.GetClient(),
		Scheme: mgr.GetScheme(),
		Log:    ctrl.Log.WithName("controllers").WithName("NodeCluster"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "Failed to create controller", "controller", "NodeCluster")
		os.Exit(1)
	}

	if err := (&controller.ChainReconciler{
		Client: mgr.GetClient(),
		Scheme: mgr.GetScheme(),
		Log:    ctrl.Log.WithName("controllers").WithName("Chain"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "Failed to create controller", "controller", "Chain")
		os.Exit(1)
	}

	if err := (&controller.IndexerReconciler{
		Client: mgr.GetClient(),
		Scheme: mgr.GetScheme(),
		Log:    ctrl.Log.WithName("controllers").WithName("Indexer"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "Failed to create controller", "controller", "Indexer")
		os.Exit(1)
	}

	if err := (&controller.ExplorerReconciler{
		Client: mgr.GetClient(),
		Scheme: mgr.GetScheme(),
		Log:    ctrl.Log.WithName("controllers").WithName("Explorer"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "Failed to create controller", "controller", "Explorer")
		os.Exit(1)
	}

	if err := (&controller.BridgeReconciler{
		Client: mgr.GetClient(),
		Scheme: mgr.GetScheme(),
		Log:    ctrl.Log.WithName("controllers").WithName("Bridge"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "Failed to create controller", "controller", "Bridge")
		os.Exit(1)
	}

	if err := (&controller.GatewayReconciler{
		Client: mgr.GetClient(),
		Scheme: mgr.GetScheme(),
		Log:    ctrl.Log.WithName("controllers").WithName("Gateway"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "Failed to create controller", "controller", "Gateway")
		os.Exit(1)
	}

	if err := (&controller.NetworkReconciler{
		Client: mgr.GetClient(),
		Scheme: mgr.GetScheme(),
		Log:    ctrl.Log.WithName("controllers").WithName("Network"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "Failed to create controller", "controller", "Network")
		os.Exit(1)
	}

	if err := (&controller.CloudReconciler{
		Client: mgr.GetClient(),
		Scheme: mgr.GetScheme(),
		Log:    ctrl.Log.WithName("controllers").WithName("Cloud"),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "Failed to create controller", "controller", "Cloud")
		os.Exit(1)
	}

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

	setupLog.Info("Starting nchain operator")
	if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
		setupLog.Error(err, "Failed to run manager")
		os.Exit(1)
	}
}