main.go

/*
Copyright 2020 Red Hat OpenShift Container Storage.

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"
	"fmt"
	"os"
	"runtime"

	snapapi "github.com/kubernetes-csi/external-snapshotter/client/v4/apis/volumesnapshot/v1"
	nbapis "github.com/noobaa/noobaa-operator/v2/pkg/apis"
	openshiftConfigv1 "github.com/openshift/api/config/v1"
	routev1 "github.com/openshift/api/route/v1"
	openshiftv1 "github.com/openshift/api/template/v1"
	secv1client "github.com/openshift/client-go/security/clientset/versioned/typed/security/v1"
	ocsv1 "github.com/openshift/ocs-operator/api/v1"
	"github.com/openshift/ocs-operator/controllers/ocsinitialization"
	"github.com/openshift/ocs-operator/controllers/persistentvolume"
	"github.com/openshift/ocs-operator/controllers/storagecluster"
	monitoringv1 "github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1"
	cephv1 "github.com/rook/rook/pkg/apis/ceph.rook.io/v1"
	corev1 "k8s.io/api/core/v1"
	storagev1 "k8s.io/api/storage/v1"
	extv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
	"k8s.io/apimachinery/pkg/api/errors"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	apiruntime "k8s.io/apimachinery/pkg/runtime"
	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
	_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
	ctrl "sigs.k8s.io/controller-runtime"
	"sigs.k8s.io/controller-runtime/pkg/log/zap"
	// +kubebuilder:scaffold:imports
)

var (
	scheme   = apiruntime.NewScheme()
	setupLog = ctrl.Log.WithName("cmd")
)

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

	utilruntime.Must(ocsv1.AddToScheme(scheme))
	utilruntime.Must(cephv1.AddToScheme(scheme))
	utilruntime.Must(storagev1.AddToScheme(scheme))
	utilruntime.Must(nbapis.AddToScheme(scheme))
	utilruntime.Must(monitoringv1.AddToScheme(scheme))
	utilruntime.Must(corev1.AddToScheme(scheme))
	utilruntime.Must(openshiftv1.AddToScheme(scheme))
	utilruntime.Must(snapapi.AddToScheme(scheme))
	utilruntime.Must(openshiftConfigv1.AddToScheme(scheme))
	utilruntime.Must(extv1.AddToScheme(scheme))
	utilruntime.Must(routev1.AddToScheme(scheme))
	// +kubebuilder:scaffold:scheme
}

func printVersion() {
	setupLog.Info(fmt.Sprintf("Go Version: %s", runtime.Version()))
	setupLog.Info(fmt.Sprintf("Go OS/Arch: %s/%s", runtime.GOOS, runtime.GOARCH))
}

func main() {
	var probeAddr string
	var metricsAddr string
	var enableLeaderElection bool
	flag.StringVar(&metricsAddr, "metrics-addr", ":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, "enable-leader-election", false,
		"Enable leader election for controller manager. "+
			"Enabling this will ensure there is only one active controller manager.")

	loggerOpts := zap.Options{}
	loggerOpts.BindFlags(flag.CommandLine)
	flag.Parse()

	logger := zap.New(zap.UseFlagOptions(&loggerOpts))
	ctrl.SetLogger(logger)

	printVersion()
	if loggerOpts.Development {
		setupLog.Info("running in development mode")
	}

	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
		Scheme:                 scheme,
		MetricsBindAddress:     metricsAddr,
		HealthProbeBindAddress: probeAddr,
		Port:                   9443,
		LeaderElection:         enableLeaderElection,
		LeaderElectionID:       "ab76f4c9.openshift.io",
	})
	if err != nil {
		setupLog.Error(err, "unable to start manager")
		os.Exit(1)
	}

	if err = (&ocsinitialization.OCSInitializationReconciler{
		Client:         mgr.GetClient(),
		Log:            ctrl.Log.WithName("controllers").WithName("OCSInitialization"),
		Scheme:         mgr.GetScheme(),
		SecurityClient: secv1client.NewForConfigOrDie(mgr.GetConfig()),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "OCSInitialization")
		os.Exit(1)
	}

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

	if err = (&persistentvolume.PersistentVolumeReconciler{
		Client: mgr.GetClient(),
		Log:    ctrl.Log.WithName("controllers").WithName("PersistentVolume"),
		Scheme: mgr.GetScheme(),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "PersistentVolume")
		os.Exit(1)
	}
	// +kubebuilder:scaffold:builder

	// Create OCSInitialization CR if it's not present
	ocsNamespacedName := ocsinitialization.InitNamespacedName()
	client := mgr.GetClient()
	err = client.Create(context.TODO(), &ocsv1.OCSInitialization{
		ObjectMeta: metav1.ObjectMeta{
			Name:      ocsNamespacedName.Name,
			Namespace: ocsNamespacedName.Namespace,
		},
	})
	switch {
	case err == nil:
		setupLog.Info("created OCSInitialization resource")
	case errors.IsAlreadyExists(err):
		setupLog.Info("OCSInitialization resource already exists")
	default:
		setupLog.Error(err, "failed to create OCSInitialization custom resource")
		os.Exit(1)
	}

	// Add readiness probe
	if err := mgr.AddReadyzCheck("readyz", storagecluster.ReadinessChecker); err != nil {
		setupLog.Error(err, "unable add a readiness check")
		os.Exit(1)
	}
	storagecluster.ReadinessSet()

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