main.go

/**
 * Copyright contributors to the ibm-storage-odf-operator project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package main

import (
	"context"
	"flag"
	"os"
	// Import all Kubernetes client auth plugins (e.g. Azure, GCP, OIDC, etc.)
	// to ensure that exec-entrypoint and run can make use of them.

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

	odfv1alpha1 "github.com/IBM/ibm-storage-odf-operator/api/v1alpha1"
	"github.com/IBM/ibm-storage-odf-operator/console"
	"github.com/IBM/ibm-storage-odf-operator/controllers"
	"github.com/IBM/ibm-storage-odf-operator/controllers/persistentvolume"
	"github.com/IBM/ibm-storage-odf-operator/controllers/storageclass"
	"github.com/IBM/ibm-storage-odf-operator/controllers/util"
	configv1 "github.com/openshift/api/config/v1"
	consolev1 "github.com/openshift/api/console/v1"
	operatorv1 "github.com/openshift/api/operator/v1"
	monitoringv1 "github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1"
	"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/manager"
	metricsserver "sigs.k8s.io/controller-runtime/pkg/metrics/server"
	"sigs.k8s.io/controller-runtime/pkg/webhook"
	//+kubebuilder:scaffold:imports
)

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

func init() {
	utilruntime.Must(clientgoscheme.AddToScheme(scheme))
	utilruntime.Must(monitoringv1.AddToScheme(scheme))
	utilruntime.Must(odfv1alpha1.AddToScheme(scheme))
	utilruntime.Must(consolev1.AddToScheme(scheme))
	utilruntime.Must(configv1.AddToScheme(scheme))
	utilruntime.Must(operatorv1.AddToScheme(scheme))
	//+kubebuilder:scaffold:scheme
}

func main() {
	var metricsAddr string
	var enableLeaderElection bool
	var probeAddr string
	var consolePort int
	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.")
	flag.IntVar(&consolePort, "console-port", 9003, "The port where the IBM console server will be serving it's payload")
	opts := zap.Options{
		Development: true,
	}
	opts.BindFlags(flag.CommandLine)
	flag.Parse()

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

	ns, err := util.GetWatchNamespace()
	if err != nil {
		setupLog.Error(err, "unable to get watched namespace")
		os.Exit(1)
	}

	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
		Scheme:  scheme,
		Metrics: metricsserver.Options{BindAddress: metricsAddr},
		WebhookServer: webhook.NewServer(webhook.Options{
			Port: 9443,
		}),
		HealthProbeBindAddress: probeAddr,
		LeaderElection:         enableLeaderElection,
		LeaderElectionID:       "07346adf.ibm.com",
	})
	if err != nil {
		setupLog.Error(err, "unable to start manager")
		os.Exit(1)
	}

	dynamicClient, err := controllers.GetIBMBlockCSIDynamicClient(mgr.GetConfig())
	if err != nil {
		setupLog.Error(err, "unable to create CSI discovery client")
		os.Exit(1)
	}

	if err = (&controllers.FlashSystemClusterReconciler{
		Client:           mgr.GetClient(),
		CSIDynamicClient: dynamicClient,
		IsCSICRCreated:   false,
		Config:           mgr.GetConfig(),
		Log:              ctrl.Log.WithName("controllers").WithName("FlashSystemCluster"),
		Scheme:           mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "FlashSystemCluster")
		os.Exit(1)
	}

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

	if err = (&controllers.ClusterVersionReconciler{
		Client:      mgr.GetClient(),
		Scheme:      mgr.GetScheme(),
		ConsolePort: consolePort,
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "ClusterVersion")
		os.Exit(1)
	}

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

	setupLog.Info("enable console")
	if err := mgr.Add(manager.RunnableFunc(func(context.Context) error {
		err = console.EnableIBMConsoleByDefault(mgr.GetClient())
		if err != nil {
			setupLog.Error(err, "unable to enable IBM Console")
			os.Exit(1)
		}
		return nil
	})); err != nil {
		setupLog.Error(err, "unable to Initialize IBM Console")
		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)
	}

	setupLog.Info("removing console plugin CR")
	if err := console.RemoveConsole(mgr.GetClient(), ns); err != nil {
		setupLog.Error(err, "problem removing console plugin")
	}
}