main.go

package main

import (
	"flag"
	"os"

	"github.com/opendatahub-io/odh-project-controller/controllers"
	"github.com/opendatahub-io/odh-project-controller/version"
	"k8s.io/apimachinery/pkg/runtime"
	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/server"
)

//nolint:gochecknoglobals //reason: used only here
var (
	scheme               = runtime.NewScheme()
	setupLog             = ctrl.Log.WithName("setup")
	metricsAddr          string
	enableLeaderElection bool
	probeAddr            string
)

func init() { //nolint:gochecknoinits //reason this way we ensure schemes are always registered before we start anything
	controllers.RegisterSchemes(scheme)
}

func main() {
	flag.StringVar(&metricsAddr, "metrics-bind-address", ":8080", "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,
		Metrics:                server.Options{BindAddress: metricsAddr},
		HealthProbeBindAddress: probeAddr,
		LeaderElection:         enableLeaderElection,
		LeaderElectionID:       "odh-project-controller",
	})
	if err != nil {
		setupLog.Error(err, "unable to start manager")
		os.Exit(1)
	}

	ctrlLog := ctrl.Log.WithName("controllers").
		WithName("odh-project")
	ctrlLog.Info("creating controller instance", "version", version.Version, "commit", version.Commit, "build-time", version.BuildTime)

	if err = (&controllers.OpenshiftServiceMeshReconciler{
		Client: mgr.GetClient(),
		Log:    ctrlLog,
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "odh-project")
		os.Exit(1)
	}

	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)
	}
}