main.go

/*
Copyright 2022.

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 (
	"flag"
	"os"
	"strconv"

	kservev1alpha1 "github.com/kserve/kserve/pkg/apis/serving/v1alpha1"
	kservev1beta1 "github.com/kserve/kserve/pkg/apis/serving/v1beta1"
	monitoringv1 "github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1"

	// 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"

	"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"

	"github.com/opendatahub-io/odh-model-controller/controllers"
	routev1 "github.com/openshift/api/route/v1"
	istiosecurityv1beta1 "istio.io/client-go/pkg/apis/security/v1beta1"
	telemetryv1alpha1 "istio.io/client-go/pkg/apis/telemetry/v1alpha1"
	corev1 "k8s.io/api/core/v1"
	authv1 "k8s.io/api/rbac/v1"
	maistrav1 "maistra.io/api/core/v1"
	//+kubebuilder:scaffold:imports
)

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

// ClusterRole permissions

// +kubebuilder:rbac:groups=serving.kserve.io,resources=inferenceservices,verbs=get;list;watch
// +kubebuilder:rbac:groups=serving.kserve.io,resources=inferenceservices/finalizers,verbs=get;list;watch;update
// +kubebuilder:rbac:groups=serving.kserve.io,resources=servingruntimes,verbs=get;list;watch;create;update
// +kubebuilder:rbac:groups=serving.kserve.io,resources=servingruntimes/finalizers,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=networking.istio.io,resources=virtualservices,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=networking.istio.io,resources=virtualservices/finalizers,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=security.istio.io,resources=peerauthentications,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=telemetry.istio.io,resources=telemetries,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=maistra.io,resources=servicemeshmembers,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=maistra.io,resources=servicemeshmembers/finalizers,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=maistra.io,resources=servicemeshmemberrolls,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=maistra.io,resources=servicemeshcontrolplanes,verbs=get;list;watch;create;update;patch;use
// +kubebuilder:rbac:groups=route.openshift.io,resources=routes,verbs=get;list;watch;create;update;patch
// +kubebuilder:rbac:groups=rbac.authorization.k8s.io,resources=clusterrolebindings;rolebindings,verbs=get;list;watch;create;update;patch;watch;delete
// +kubebuilder:rbac:groups=networking.k8s.io,resources=networkpolicies,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=monitoring.coreos.com,resources=servicemonitors;podmonitors,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups="",resources=configmaps;namespaces;pods;services;serviceaccounts;secrets;endpoints,verbs=get;list;watch;create;update;patch

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

	utilruntime.Must(kservev1alpha1.AddToScheme(scheme))
	utilruntime.Must(kservev1beta1.AddToScheme(scheme))
	utilruntime.Must(corev1.AddToScheme(scheme))
	utilruntime.Must(routev1.AddToScheme(scheme))
	utilruntime.Must(authv1.AddToScheme(scheme))
	utilruntime.Must(monitoringv1.AddToScheme(scheme))
	utilruntime.Must(istiosecurityv1beta1.AddToScheme(scheme))
	utilruntime.Must(telemetryv1alpha1.AddToScheme(scheme))
	utilruntime.Must(maistrav1.SchemeBuilder.AddToScheme(scheme))

	// The following are related to Service Mesh, uncomment this and other
	// similar blocks to use with Service Mesh
	//utilruntime.Must(virtualservicev1.AddToScheme(scheme))

	//+kubebuilder:scaffold:scheme
}

func getEnvAsBool(name string, defaultValue bool) bool {
	valStr := os.Getenv(name)
	if val, err := strconv.ParseBool(valStr); err == nil {
		return val
	}
	return defaultValue
}

func main() {
	var metricsAddr string
	var enableLeaderElection bool
	var monitoringNS string
	var probeAddr string
	var kserveEnabled bool
	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.StringVar(&monitoringNS, "monitoring-namespace", "",
		"The Namespace where the monitoring stack's Prometheus resides.")
	flag.BoolVar(&kserveEnabled, "kserve-enabled", true,
		"Enable Kserve Metrics. "+
			"Enabling will disable modelmesh controllers and only create kserve monitoring controller.")

	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,
		MetricsBindAddress:     metricsAddr,
		Port:                   9443,
		HealthProbeBindAddress: probeAddr,
		LeaderElection:         enableLeaderElection,
		LeaderElectionID:       "odh-model-controller",
	})
	if err != nil {
		setupLog.Error(err, "unable to start manager")
		os.Exit(1)
	}

	//Setup InferenceService controller
	if err = (&controllers.OpenshiftInferenceServiceReconciler{
		Client:       mgr.GetClient(),
		Log:          ctrl.Log.WithName("controllers").WithName("InferenceService"),
		Scheme:       mgr.GetScheme(),
		MeshDisabled: getEnvAsBool("MESH_DISABLED", false),
	}).SetupWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "InferenceService")
		os.Exit(1)
	}
	if !kserveEnabled {
		setupLog.Info("ModelMesh deployment mode, skipping setup of kserve controllers.")
		if err = (&controllers.StorageSecretReconciler{
			Client: mgr.GetClient(),
			Log:    ctrl.Log.WithName("controllers").WithName("StorageSecret"),
			Scheme: mgr.GetScheme(),
		}).SetupWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create controller", "controller", "StorageSecret")
			os.Exit(1)
		}

		if monitoringNS != "" {
			setupLog.Info("Monitoring namespace provided, setting up monitoring controller.")
			if err = (&controllers.MonitoringReconciler{
				Client:       mgr.GetClient(),
				Log:          ctrl.Log.WithName("controllers").WithName("MonitoringReconciler"),
				Scheme:       mgr.GetScheme(),
				MonitoringNS: monitoringNS,
			}).SetupWithManager(mgr); err != nil {
				setupLog.Error(err, "unable to create controller", "controller", "MonitoringReconciler")
				os.Exit(1)
			}
		} else {
			setupLog.Info("Monitoring namespace not provided, skipping setup of monitoring controller. To enable " +
				"monitoring for ModelServing, please provide a monitoring namespace via the (--monitoring-namespace) flag.")
		}
	}

	//+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)
	}
}