[0.11.1] Enhance controller setup based on available CRDs

pkg/constants/constants.go

@@ -426,6 +426,12 @@ const (
 	StateReasonCrashLoopBackOff = "CrashLoopBackOff"
 )
 
+// CRD Kinds
+const (
+	IstioVirtualServiceKind = "VirtualService"
+	KnativeServiceKind      = "Service"
+)
+
 // GetRawServiceLabel generate native service label
 func GetRawServiceLabel(service string) string {
 	return "isvc." + service

pkg/controller/v1alpha1/inferencegraph/controller.go

@@ -25,7 +25,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	isvcutils "github.com/kserve/kserve/pkg/controller/v1beta1/inferenceservice/utils"
 	appsv1 "k8s.io/api/apps/v1"
 	"k8s.io/client-go/util/retry"
 
@@ -34,13 +33,16 @@ import (
 	"github.com/kserve/kserve/pkg/apis/serving/v1beta1"
 	v1beta1api "github.com/kserve/kserve/pkg/apis/serving/v1beta1"
 	"github.com/kserve/kserve/pkg/constants"
+	isvcutils "github.com/kserve/kserve/pkg/controller/v1beta1/inferenceservice/utils"
+	"github.com/kserve/kserve/pkg/utils"
 	"github.com/pkg/errors"
 	v1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/equality"
 	apierr "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/api/resource"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/record"
 	"knative.dev/pkg/apis"
 	knservingv1 "knative.dev/serving/pkg/apis/serving/v1"
@@ -53,9 +55,10 @@ import (
 // InferenceGraphReconciler reconciles a InferenceGraph object
 type InferenceGraphReconciler struct {
 	client.Client
-	Log      logr.Logger
-	Scheme   *runtime.Scheme
-	Recorder record.EventRecorder
+	ClientConfig *rest.Config
+	Log          logr.Logger
+	Scheme       *runtime.Scheme
+	Recorder     record.EventRecorder
 }
 
 // InferenceGraphState describes the Readiness of the InferenceGraph
@@ -174,6 +177,19 @@ func (r *InferenceGraphReconciler) Reconcile(ctx context.Context, req ctrl.Reque
 		r.Log.Error(err, "name", graph.GetName())
 		return reconcile.Result{}, err
 	}
+
+	// Abort if Knative Services are not available
+	ksvcAvailable, checkKsvcErr := utils.IsCrdAvailable(r.ClientConfig, knservingv1.SchemeGroupVersion.String(), constants.KnativeServiceKind)
+	if err != nil {
+		return reconcile.Result{}, checkKsvcErr
+	}
+
+	if !ksvcAvailable {
+		r.Recorder.Event(graph, v1.EventTypeWarning, "ServerlessModeRejected",
+			"It is not possible to use Serverless deployment mode when Knative Services are not available")
+		return reconcile.Result{Requeue: false}, nil
+	}
+
 	//@TODO check raw deployment mode
 	desired := createKnativeService(graph.ObjectMeta, graph, routerConfig)
 	err = controllerutil.SetControllerReference(graph, desired, r.Scheme)
@@ -253,15 +269,22 @@ func inferenceGraphReadiness(status v1alpha1api.InferenceGraphStatus) bool {
 }
 
 func (r *InferenceGraphReconciler) SetupWithManager(mgr ctrl.Manager, deployConfig *v1beta1api.DeployConfig) error {
-	if deployConfig.DefaultDeploymentMode == string(constants.RawDeployment) {
-		return ctrl.NewControllerManagedBy(mgr).
-			For(&v1alpha1api.InferenceGraph{}).
-			Owns(&appsv1.Deployment{}).
-			Complete(r)
+	r.ClientConfig = mgr.GetConfig()
+
+	ksvcFound, err := utils.IsCrdAvailable(r.ClientConfig, knservingv1.SchemeGroupVersion.String(), constants.KnativeServiceKind)
+	if err != nil {
+		return err
+	}
+
+	ctrlBuilder := ctrl.NewControllerManagedBy(mgr).
+		For(&v1alpha1api.InferenceGraph{}).
+		Owns(&appsv1.Deployment{})
+
+	if ksvcFound {
+		ctrlBuilder = ctrlBuilder.Owns(&knservingv1.Service{})
 	} else {
-		return ctrl.NewControllerManagedBy(mgr).
-			For(&v1alpha1api.InferenceGraph{}).
-			Owns(&knservingv1.Service{}).
-			Complete(r)
+		r.Log.Info("The InferenceGraph controller won't watch serving.knative.dev/v1/Service resources because the CRD is not available.")
 	}
+
+	return ctrlBuilder.Complete(r)
 }

pkg/controller/v1alpha1/inferencegraph/controller_test.go

@@ -20,6 +20,7 @@ import (
 	"context"
 	"github.com/kserve/kserve/pkg/apis/serving/v1alpha1"
 	"github.com/kserve/kserve/pkg/constants"
+	"github.com/kserve/kserve/pkg/utils"
 	. "github.com/onsi/ginkgo/v2"
 	. "github.com/onsi/gomega"
 	v1 "k8s.io/api/core/v1"
@@ -30,6 +31,7 @@ import (
 	"knative.dev/pkg/ptr"
 	knservingdefaults "knative.dev/serving/pkg/apis/config"
 	knservingv1 "knative.dev/serving/pkg/apis/serving/v1"
+	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
 	"time"
 )
@@ -461,4 +463,75 @@ var _ = Describe("Inference Graph controller test", func() {
 		})
 	})
 
+	Context("When creating an InferenceGraph in Serverless mode", func() {
+		It("Should fail if Knative Serving is not installed", func() {
+			// Simulate Knative Serving is absent by setting to false the relevant item in utils.gvResourcesCache variable
+			servingResources, getServingResourcesErr := utils.GetAvailableResourcesForApi(cfg, knservingv1.SchemeGroupVersion.String())
+			Expect(getServingResourcesErr).To(BeNil())
+			defer utils.SetAvailableResourcesForApi(knservingv1.SchemeGroupVersion.String(), servingResources)
+			utils.SetAvailableResourcesForApi(knservingv1.SchemeGroupVersion.String(), nil)
+
+			By("By creating a new InferenceGraph")
+			var configMap = &v1.ConfigMap{
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      constants.InferenceServiceConfigMapName,
+					Namespace: constants.KServeNamespace,
+				},
+				Data: configs,
+			}
+			Expect(k8sClient.Create(context.TODO(), configMap)).NotTo(HaveOccurred())
+			defer k8sClient.Delete(context.TODO(), configMap)
+
+			graphName := "singlenode1"
+			var expectedRequest = reconcile.Request{NamespacedName: types.NamespacedName{Name: graphName, Namespace: "default"}}
+			var serviceKey = expectedRequest.NamespacedName
+			ctx := context.Background()
+			ig := &v1alpha1.InferenceGraph{
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      serviceKey.Name,
+					Namespace: serviceKey.Namespace,
+					Annotations: map[string]string{
+						"serving.kserve.io/deploymentMode": string(constants.Serverless),
+					},
+				},
+				Spec: v1alpha1.InferenceGraphSpec{
+					Nodes: map[string]v1alpha1.InferenceRouter{
+						v1alpha1.GraphRootNodeName: {
+							RouterType: v1alpha1.Sequence,
+							Steps: []v1alpha1.InferenceStep{
+								{
+									InferenceTarget: v1alpha1.InferenceTarget{
+										ServiceURL: "http://someservice.exmaple.com",
+									},
+								},
+							},
+						},
+					},
+				},
+			}
+			Expect(k8sClient.Create(ctx, ig)).Should(Succeed())
+			defer k8sClient.Delete(ctx, ig)
+
+			Eventually(func() bool {
+				events := &v1.EventList{}
+				err := k8sClient.List(ctx, events, client.InNamespace(serviceKey.Namespace))
+				if err != nil {
+					return false
+				}
+				if events == nil {
+					return false
+				}
+
+				for _, event := range events.Items {
+					if event.InvolvedObject.Kind == "InferenceGraph" &&
+						event.InvolvedObject.Name == serviceKey.Name &&
+						event.Reason == "ServerlessModeRejected" {
+						return true
+					}
+				}
+
+				return false
+			}, timeout, interval).Should(BeTrue())
+		})
+	})
 })

pkg/controller/v1beta1/inferenceservice/controller.go

@@ -42,6 +42,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/record"
 	"knative.dev/pkg/apis"
 	knservingv1 "knative.dev/serving/pkg/apis/serving/v1"
@@ -87,9 +88,10 @@ const (
 // InferenceServiceReconciler reconciles a InferenceService object
 type InferenceServiceReconciler struct {
 	client.Client
-	Log      logr.Logger
-	Scheme   *runtime.Scheme
-	Recorder record.EventRecorder
+	ClientConfig *rest.Config
+	Log          logr.Logger
+	Scheme       *runtime.Scheme
+	Recorder     record.EventRecorder
 }
 
 func (r *InferenceServiceReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
@@ -164,6 +166,21 @@ func (r *InferenceServiceReconciler) Reconcile(ctx context.Context, req ctrl.Req
 		return ctrl.Result{}, nil
 	}
 
+	// Abort early if the resolved deployment mode is Serverless, but Knative Services are not available
+	if deploymentMode == constants.Serverless {
+		ksvcAvailable, checkKsvcErr := utils.IsCrdAvailable(r.ClientConfig, knservingv1.SchemeGroupVersion.String(), constants.KnativeServiceKind)
+		if err != nil {
+			return reconcile.Result{}, checkKsvcErr
+		}
+
+		if !ksvcAvailable {
+			r.Recorder.Event(isvc, v1.EventTypeWarning, "ServerlessModeRejected",
+				"It is not possible to use Serverless deployment mode when Knative Services are not available")
+			return reconcile.Result{Requeue: false}, nil
+		}
+	}
+
+	// Setup reconcilers
 	r.Log.Info("Reconciling inference service", "apiVersion", isvc.APIVersion, "isvc", isvc.Name)
 	isvcConfig, err := v1beta1api.NewInferenceServicesConfig(r.Client)
 	if err != nil {
@@ -304,26 +321,35 @@ func inferenceServiceStatusEqual(s1, s2 v1beta1api.InferenceServiceStatus, deplo
 }
 
 func (r *InferenceServiceReconciler) SetupWithManager(mgr ctrl.Manager, deployConfig *v1beta1api.DeployConfig, ingressConfig *v1beta1api.IngressConfig) error {
-	if deployConfig.DefaultDeploymentMode == string(constants.RawDeployment) {
-		return ctrl.NewControllerManagedBy(mgr).
-			For(&v1beta1api.InferenceService{}).
-			Owns(&appsv1.Deployment{}).
-			Complete(r)
-	} else if ingressConfig.DisableIstioVirtualHost == false {
-		return ctrl.NewControllerManagedBy(mgr).
-			For(&v1beta1api.InferenceService{}).
-			Owns(&knservingv1.Service{}).
-			Owns(&v1alpha3.VirtualService{}).
-			Owns(&appsv1.Deployment{}).
-			Complete(r)
+	r.ClientConfig = mgr.GetConfig()
+
+	ksvcFound, err := utils.IsCrdAvailable(r.ClientConfig, knservingv1.SchemeGroupVersion.String(), constants.KnativeServiceKind)
+	if err != nil {
+		return err
+	}
+
+	vsFound, err := utils.IsCrdAvailable(r.ClientConfig, v1alpha3.SchemeGroupVersion.String(), constants.IstioVirtualServiceKind)
+	if err != nil {
+		return err
+	}
+
+	ctrlBuilder := ctrl.NewControllerManagedBy(mgr).
+		For(&v1beta1api.InferenceService{}).
+		Owns(&appsv1.Deployment{})
+
+	if ksvcFound {
+		ctrlBuilder = ctrlBuilder.Owns(&knservingv1.Service{})
+	} else {
+		r.Log.Info("The InferenceService controller won't watch serving.knative.dev/v1/Service resources because the CRD is not available.")
+	}
+
+	if vsFound && ingressConfig.DisableIstioVirtualHost == false {
+		ctrlBuilder = ctrlBuilder.Owns(&v1alpha3.VirtualService{})
 	} else {
-		return ctrl.NewControllerManagedBy(mgr).
-			For(&v1beta1api.InferenceService{}).
-			Owns(&knservingv1.Service{}).
-			Owns(&appsv1.Deployment{}).
-			Complete(r)
+		r.Log.Info("The InferenceService controller won't watch networking.istio.io/v1alpha3/VirtualService resources because the CRD is not available.")
 	}
 
+	return ctrlBuilder.Complete(r)
 }
 
 func (r *InferenceServiceReconciler) deleteExternalResources(isvc *v1beta1api.InferenceService) error {

pkg/controller/v1beta1/inferenceservice/controller_test.go

@@ -29,6 +29,7 @@ import (
 	"github.com/kserve/kserve/pkg/apis/serving/v1alpha1"
 	"github.com/kserve/kserve/pkg/apis/serving/v1beta1"
 	"github.com/kserve/kserve/pkg/constants"
+	"github.com/kserve/kserve/pkg/utils"
 	. "github.com/onsi/ginkgo/v2"
 	"github.com/onsi/gomega"
 	. "github.com/onsi/gomega"
@@ -383,6 +384,83 @@ var _ = Describe("v1beta1 inference service controller", func() {
 			Expect(updatedVirtualService.Annotations).To(gomega.Equal(annotations))
 			Expect(updatedVirtualService.Labels).To(gomega.Equal(labels))
 		})
+		It("Should fail if Knative Serving is not installed", func() {
+			// Simulate Knative Serving is absent by setting to false the relevant item in utils.gvResourcesCache variable
+			servingResources, getServingResourcesErr := utils.GetAvailableResourcesForApi(cfg, knservingv1.SchemeGroupVersion.String())
+			Expect(getServingResourcesErr).To(BeNil())
+			defer utils.SetAvailableResourcesForApi(knservingv1.SchemeGroupVersion.String(), servingResources)
+			utils.SetAvailableResourcesForApi(knservingv1.SchemeGroupVersion.String(), nil)
+
+			// Create configmap
+			var configMap = &v1.ConfigMap{
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      constants.InferenceServiceConfigMapName,
+					Namespace: constants.KServeNamespace,
+				},
+				Data: configs,
+			}
+			Expect(k8sClient.Create(context.TODO(), configMap)).NotTo(HaveOccurred())
+			defer k8sClient.Delete(context.TODO(), configMap)
+
+			// Create InferenceService
+			serviceName := "serverless-isvc"
+			var expectedRequest = reconcile.Request{NamespacedName: types.NamespacedName{Name: serviceName, Namespace: "default"}}
+			var serviceKey = expectedRequest.NamespacedName
+			var storageUri = "s3://test/mnist/export"
+			isvc := &v1beta1.InferenceService{
+				ObjectMeta: metav1.ObjectMeta{
+					Name:      serviceKey.Name,
+					Namespace: serviceKey.Namespace,
+					Annotations: map[string]string{
+						"serving.kserve.io/deploymentMode": "Serverless",
+					},
+				},
+				Spec: v1beta1.InferenceServiceSpec{
+					Predictor: v1beta1.PredictorSpec{
+						ComponentExtensionSpec: v1beta1.ComponentExtensionSpec{
+							MinReplicas: v1beta1.GetIntReference(1),
+							MaxReplicas: 3,
+						},
+						Tensorflow: &v1beta1.TFServingSpec{
+							PredictorExtensionSpec: v1beta1.PredictorExtensionSpec{
+								StorageURI:     &storageUri,
+								RuntimeVersion: proto.String("1.14.0"),
+								Container: v1.Container{
+									Name:      constants.InferenceServiceContainerName,
+									Resources: defaultResource,
+								},
+							},
+						},
+					},
+				},
+			}
+			isvc.DefaultInferenceService(nil, nil)
+
+			ctx := context.Background()
+			Expect(k8sClient.Create(ctx, isvc)).Should(Succeed())
+			defer k8sClient.Delete(ctx, isvc)
+
+			Eventually(func() bool {
+				events := &v1.EventList{}
+				err := k8sClient.List(ctx, events, client.InNamespace(serviceKey.Namespace))
+				if err != nil {
+					return false
+				}
+				if events == nil {
+					return false
+				}
+
+				for _, event := range events.Items {
+					if event.InvolvedObject.Kind == "InferenceService" &&
+						event.InvolvedObject.Name == serviceKey.Name &&
+						event.Reason == "ServerlessModeRejected" {
+						return true
+					}
+				}
+
+				return false
+			}, timeout, interval).Should(BeTrue())
+		})
 	})
 
 	Context("Inference Service with transformer", func() {