Implement OpenShift Route creation for InferenceGraphs

config/rbac/role.yaml

@@ -116,9 +116,18 @@ rules:
   resources:
   - routes
   verbs:
+  - create
   - get
   - list
+  - patch
+  - update
   - watch
+- apiGroups:
+  - route.openshift.io
+  resources:
+  - routes/status
+  verbs:
+  - get
 - apiGroups:
   - serving.knative.dev
   resources:

pkg/controller/v1alpha1/inferencegraph/controller.go

@@ -19,6 +19,8 @@ limitations under the License.
 // +kubebuilder:rbac:groups=serving.knative.dev,resources=services,verbs=get;list;watch;create;update;patch;delete
 // +kubebuilder:rbac:groups=serving.knative.dev,resources=services/finalizers,verbs=get;list;watch;create;update;patch;delete
 // +kubebuilder:rbac:groups=serving.knative.dev,resources=services/status,verbs=get;update;patch
+// +kubebuilder:rbac:groups=route.openshift.io,resources=routes,verbs=create;get;update;patch;watch
+// +kubebuilder:rbac:groups=route.openshift.io,resources=routes/status,verbs=get
 package inferencegraph
 
 import (
@@ -27,7 +29,7 @@ import (
 	"fmt"
 
 	"github.com/go-logr/logr"
-	"github.com/kserve/kserve/pkg/utils"
+	osv1 "github.com/openshift/api/route/v1"
 	"github.com/pkg/errors"
 	appsv1 "k8s.io/api/apps/v1"
 	v1 "k8s.io/api/core/v1"
@@ -52,6 +54,7 @@ import (
 	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"
 )
 
 // InferenceGraphReconciler reconciles a InferenceGraph object
@@ -121,7 +124,7 @@ func getRouterConfigs(configMap *v1.ConfigMap) (*RouterConfig, error) {
 func (r *InferenceGraphReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
 	_ = context.Background()
 
-	// Fetch the InferenceService instance
+	// Fetch the InferenceGraph instance
 	graph := &v1alpha1api.InferenceGraph{}
 	if err := r.Get(ctx, req.NamespacedName, graph); err != nil {
 		if apierr.IsNotFound(err) {
@@ -193,6 +196,17 @@ func (r *InferenceGraphReconciler) Reconcile(ctx context.Context, req ctrl.Reque
 			return reconcile.Result{Requeue: true}, errors.Wrapf(err,
 				"Failed to find inference graph deployment  %s", graph.Name)
 		}
+
+		routeReconciler := OpenShiftRouteReconciler{
+			Scheme: r.Scheme,
+			Client: r.Client,
+		}
+		hostname, err := routeReconciler.Reconcile(ctx, graph)
+		url.Host = hostname
+		if err != nil {
+			return ctrl.Result{}, errors.Wrapf(err, "fails to reconcile Route for InferenceGraph")
+		}
+
 		logger.Info("Inference graph raw before propagate status")
 		PropagateRawStatus(&graph.Status, deployment, url)
 	} else {
@@ -291,7 +305,8 @@ func (r *InferenceGraphReconciler) SetupWithManager(mgr ctrl.Manager, deployConf
 
 	ctrlBuilder := ctrl.NewControllerManagedBy(mgr).
 		For(&v1alpha1api.InferenceGraph{}).
-		Owns(&appsv1.Deployment{})
+		Owns(&appsv1.Deployment{}).
+		Owns(&osv1.Route{})
 
 	if ksvcFound {
 		ctrlBuilder = ctrlBuilder.Owns(&knservingv1.Service{})

pkg/controller/v1alpha1/inferencegraph/controller_test.go

@@ -23,6 +23,7 @@ import (
 
 	. "github.com/onsi/ginkgo/v2"
 	. "github.com/onsi/gomega"
+	osv1 "github.com/openshift/api/route/v1"
 	"google.golang.org/protobuf/proto"
 	appsv1 "k8s.io/api/apps/v1"
 	v1 "k8s.io/api/core/v1"
@@ -671,6 +672,29 @@ var _ = Describe("Inference Graph controller test", func() {
 			Expect(actualK8sDeploymentCreated.Spec.Template.Spec.Containers).To(Not(BeNil()))
 			Expect(actualK8sDeploymentCreated.Spec.Template.Spec.Containers[0].Image).To(Not(BeNil()))
 			Expect(actualK8sDeploymentCreated.Spec.Template.Spec.Containers[0].Args).To(Not(BeNil()))
+
+			// There should be an OpenShift route
+			actualK8sDeploymentCreated.Status.Conditions = []appsv1.DeploymentCondition{
+				{Type: appsv1.DeploymentAvailable},
+			}
+			Expect(k8sClient.Status().Update(ctx, actualK8sDeploymentCreated)).Should(Succeed())
+			osRoute := osv1.Route{}
+			Eventually(func() error {
+				osRouteKey := types.NamespacedName{Name: inferenceGraphSubmitted.GetName() + "-route", Namespace: inferenceGraphSubmitted.GetNamespace()}
+				return k8sClient.Get(ctx, osRouteKey, &osRoute)
+			}, timeout, interval).Should(Succeed())
+
+			// OpenShift route hostname should be set to InferenceGraph
+			osRoute.Status.Ingress = []osv1.RouteIngress{
+				{
+					Host: "openshift-route-example.com",
+				},
+			}
+			k8sClient.Status().Update(ctx, &osRoute)
+			Eventually(func() string {
+				k8sClient.Get(ctx, serviceKey, inferenceGraphSubmitted)
+				return inferenceGraphSubmitted.Status.URL.Host
+			}, timeout, interval).Should(Equal(osRoute.Status.Ingress[0].Host))
 		})
 	})
 

pkg/controller/v1alpha1/inferencegraph/openshift_route_reconciler.go

@@ -0,0 +1,86 @@
+package inferencegraph
+
+import (
+	"context"
+	"fmt"
+	"reflect"
+
+	v1 "github.com/openshift/api/route/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/apimachinery/pkg/util/intstr"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
+	ctrlLog "sigs.k8s.io/controller-runtime/pkg/log"
+
+	"github.com/kserve/kserve/pkg/apis/serving/v1alpha1"
+)
+
+type OpenShiftRouteReconciler struct {
+	Scheme *runtime.Scheme
+	Client client.Client
+}
+
+func (r *OpenShiftRouteReconciler) Reconcile(ctx context.Context, inferenceGraph *v1alpha1.InferenceGraph) (string, error) {
+	logger := ctrlLog.FromContext(ctx, "subreconciler", "OpenShiftRoute")
+
+	desiredRoute, err := r.buildOpenShiftRoute(inferenceGraph)
+	if err != nil {
+		return "", err
+	}
+
+	nsName := types.NamespacedName{
+		Namespace: desiredRoute.Namespace,
+		Name:      desiredRoute.Name,
+	}
+
+	actualRoute := v1.Route{}
+	err = client.IgnoreNotFound(r.Client.Get(ctx, nsName, &actualRoute))
+	if err != nil {
+		return "", err
+	}
+
+	if len(actualRoute.Name) == 0 {
+		logger.Info("Creating a new OpenShift Route for InferenceGraph", "namespace", desiredRoute.Namespace, "name", desiredRoute.Name)
+		err = r.Client.Create(ctx, &desiredRoute)
+		return getRouteHostname(&desiredRoute), err
+	}
+
+	if !reflect.DeepEqual(actualRoute.Spec, desiredRoute.Spec) {
+		logger.Info("Updating OpenShift Route for InferenceGraph", "namespace", desiredRoute.Namespace, "name", desiredRoute.Name)
+		actualRoute.Spec = desiredRoute.Spec
+		err = r.Client.Update(ctx, &actualRoute)
+	}
+
+	return getRouteHostname(&actualRoute), err
+}
+
+func (r *OpenShiftRouteReconciler) buildOpenShiftRoute(inferenceGraph *v1alpha1.InferenceGraph) (v1.Route, error) {
+	route := v1.Route{
+		TypeMeta: metav1.TypeMeta{},
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      fmt.Sprintf("%s-route", inferenceGraph.Name),
+			Namespace: inferenceGraph.Namespace,
+		},
+		Spec: v1.RouteSpec{
+			To: v1.RouteTargetReference{
+				Kind: "Service",
+				Name: inferenceGraph.GetName(),
+			},
+			Port: &v1.RoutePort{
+				TargetPort: intstr.FromString(inferenceGraph.GetName()),
+			},
+		},
+	}
+
+	err := controllerutil.SetControllerReference(inferenceGraph, &route, r.Scheme)
+	return route, err
+}
+
+func getRouteHostname(route *v1.Route) string {
+	for _, entry := range route.Status.Ingress {
+		return entry.Host
+	}
+	return ""
+}

pkg/controller/v1alpha1/inferencegraph/suite_test.go

@@ -23,6 +23,7 @@ import (
 
 	. "github.com/onsi/ginkgo/v2"
 	. "github.com/onsi/gomega"
+	routev1 "github.com/openshift/api/route/v1"
 	v1 "k8s.io/api/core/v1"
 	netv1 "k8s.io/api/networking/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -80,6 +81,8 @@ var _ = BeforeSuite(func() {
 	Expect(err).NotTo(HaveOccurred())
 	err = netv1.AddToScheme(scheme.Scheme)
 	Expect(err).NotTo(HaveOccurred())
+	err = routev1.AddToScheme(scheme.Scheme)
+	Expect(err).NotTo(HaveOccurred())
 
 	k8sClient, err = client.New(cfg, client.Options{Scheme: scheme.Scheme})
 	Expect(err).ToNot(HaveOccurred())

pkg/controller/v1beta1/inferenceservice/rawkube_controller_test.go

@@ -19,7 +19,6 @@ package inferenceservice
 import (
 	"context"
 	"fmt"
-
 	"time"
 
 	"github.com/kserve/kserve/pkg/apis/serving/v1alpha1"
@@ -29,9 +28,10 @@ import (
 
 	"github.com/google/go-cmp/cmp"
 	"github.com/google/go-cmp/cmp/cmpopts"
+	. "github.com/onsi/ginkgo/v2"
+
 	"github.com/kserve/kserve/pkg/apis/serving/v1beta1"
 	"github.com/kserve/kserve/pkg/constants"
-	. "github.com/onsi/ginkgo/v2"
 
 	"github.com/onsi/gomega"
 	. "github.com/onsi/gomega"
@@ -41,7 +41,6 @@ import (
 	autoscalingv2 "k8s.io/api/autoscaling/v2"
 	v1 "k8s.io/api/core/v1"
 
-	v1beta1utils "github.com/kserve/kserve/pkg/controller/v1beta1/inferenceservice/utils"
 	routev1 "github.com/openshift/api/route/v1"
 	netv1 "k8s.io/api/networking/v1"
 	"k8s.io/apimachinery/pkg/api/resource"
@@ -51,6 +50,8 @@ import (
 	"knative.dev/pkg/apis"
 	duckv1 "knative.dev/pkg/apis/duck/v1"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
+
+	v1beta1utils "github.com/kserve/kserve/pkg/controller/v1beta1/inferenceservice/utils"
 )
 
 var _ = Describe("v1beta1 inference service controller", func() {
@@ -2605,21 +2606,22 @@ var _ = Describe("v1beta1 inference service controller", func() {
 					},
 					WildcardPolicy: routev1.WildcardPolicyNone,
 				},
-				Status: routev1.RouteStatus{
-					Ingress: []routev1.RouteIngress{
-						{
-							Host: "raw-auth-default.example.com",
-							Conditions: []routev1.RouteIngressCondition{
-								{
-									Type:   routev1.RouteAdmitted,
-									Status: v1.ConditionTrue,
-								},
+			}
+			Expect(k8sClient.Create(context.TODO(), route)).Should(Succeed())
+			route.Status = routev1.RouteStatus{
+				Ingress: []routev1.RouteIngress{
+					{
+						Host: "raw-auth-default.example.com",
+						Conditions: []routev1.RouteIngressCondition{
+							{
+								Type:   routev1.RouteAdmitted,
+								Status: v1.ConditionTrue,
 							},
 						},
 					},
 				},
 			}
-			Expect(k8sClient.Create(context.TODO(), route)).Should(Succeed())
+			Expect(k8sClient.Status().Update(ctx, route)).Should(Succeed())
 
 			//check isvc status
 			updatedDeployment := actualDeployment.DeepCopy()