main.go

// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.

package main

import (
	"flag"
	"os"

	aadpodv1 "github.com/Azure/aad-pod-identity/pkg/apis/aadpodidentity/v1"
	"k8s.io/apimachinery/pkg/runtime"
	kscheme "k8s.io/client-go/kubernetes/scheme"
	_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
	"k8s.io/client-go/rest"
	ctrl "sigs.k8s.io/controller-runtime"

	"sigs.k8s.io/controller-runtime/pkg/cache"
	"sigs.k8s.io/controller-runtime/pkg/log/zap"
	"sigs.k8s.io/controller-runtime/pkg/metrics/server"
	"sigs.k8s.io/controller-runtime/pkg/webhook"

	azurev1alpha1 "github.com/Azure/azure-service-operator/api/v1alpha1"
	azurev1alpha2 "github.com/Azure/azure-service-operator/api/v1alpha2"
	azurev1beta1 "github.com/Azure/azure-service-operator/api/v1beta1"
	resourcemanagerconfig "github.com/Azure/azure-service-operator/pkg/resourcemanager/config"
	keyvaultSecrets "github.com/Azure/azure-service-operator/pkg/secrets/keyvault"
	k8sSecrets "github.com/Azure/azure-service-operator/pkg/secrets/kube"

	"github.com/Azure/azure-service-operator/controllers"
	"github.com/Azure/azure-service-operator/pkg/secrets"
	// +kubebuilder:scaffold:imports
)

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

func init() {

	_ = kscheme.AddToScheme(scheme)
	_ = azurev1alpha1.AddToScheme(scheme)
	_ = azurev1beta1.AddToScheme(scheme)
	_ = azurev1alpha2.AddToScheme(scheme)
	// +kubebuilder:scaffold:scheme

	// We need to query AAD identity types, so add them to the scheme
	_ = aadpodv1.AddToScheme(scheme)
}

// +kubebuilder:rbac:groups=core,resources=secrets,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=core,resources=events,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=azure.microsoft.com,resources=events,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=apps,resources=deployments,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=apps,resources=deployments/status,verbs=get;update;patch

func main() {
	var metricsAddr string
	var enableLeaderElection bool
	var secretClient secrets.SecretClient
	flag.StringVar(&metricsAddr, "metrics-addr", ":8080", "The address the metric 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.")

	flag.Parse()

	ctrl.SetLogger(zap.New(zap.UseDevMode(false), zap.WriteTo(os.Stdout)))

	err := resourcemanagerconfig.ParseEnvironment()
	if err != nil {
		setupLog.Error(err, "unable to parse settings required to provision resources in Azure")
		os.Exit(1)
	}

	setupLog.V(0).Info("Configuration details", "Configuration", resourcemanagerconfig.ConfigString())

	targetNamespaces := resourcemanagerconfig.TargetNamespaces()
	var cacheFunc cache.NewCacheFunc
	if targetNamespaces != nil {
		cacheFunc = func(config *rest.Config, opts cache.Options) (cache.Cache, error) {
			opts.DefaultNamespaces = make(map[string]cache.Config, len(targetNamespaces))
			for _, ns := range targetNamespaces {
				opts.DefaultNamespaces[ns] = cache.Config{}
			}

			return cache.New(config, opts)
		}
	}

	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
		Scheme:               scheme,
		NewCache:             cacheFunc,
		LeaderElection:       enableLeaderElection,
		LivenessEndpointName: "/healthz",
		Metrics: server.Options{
			BindAddress: metricsAddr,
		},
		WebhookServer: webhook.NewServer(webhook.Options{
			Port: 9443,
		}),
	})

	if err != nil {
		setupLog.Error(err, "unable to start manager")
		os.Exit(1)
	}

	keyvaultName := resourcemanagerconfig.GlobalCredentials().OperatorKeyvault()

	if keyvaultName == "" {
		setupLog.Info("Keyvault name is empty")
		secretClient = k8sSecrets.New(mgr.GetClient(), resourcemanagerconfig.SecretNamingVersion())
	} else {
		setupLog.Info("Instantiating secrets client for keyvault " + keyvaultName)
		secretClient = keyvaultSecrets.New(
			keyvaultName,
			resourcemanagerconfig.GlobalCredentials(),
			resourcemanagerconfig.SecretNamingVersion(),
			resourcemanagerconfig.PurgeDeletedKeyVaultSecrets(),
			resourcemanagerconfig.RecoverSoftDeletedKeyVaultSecrets())
	}

	if resourcemanagerconfig.SelectedMode().IncludesWatchers() {
		if err := controllers.RegisterReconcilers(mgr, scheme, secretClient); err != nil {
			setupLog.Error(err, "unable to create controller")
			os.Exit(1)
		}
	}

	if resourcemanagerconfig.SelectedMode().IncludesWebhooks() {
		if err := controllers.RegisterWebhooks(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook")
			os.Exit(1)
		}
	}
	// +kubebuilder:scaffold:builder

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

}