ingress: add alternate resource backend

Signed-off-by: Christopher M. Luciano <cmluciano@us.ibm.com>

api/openapi-spec/swagger.json

@@ -10861,6 +10861,10 @@
     "io.k8s.api.extensions.v1beta1.IngressBackend": {
       "description": "IngressBackend describes all endpoints for a given service and port.",
       "properties": {
+        "resource": {
+          "$ref": "#/definitions/io.k8s.api.core.v1.TypedLocalObjectReference",
+          "description": "Resource is an ObjectRef to another Kubernetes resource in the namespace of the Ingress object. If resource is specified, serviceName and servicePort must not be specified."
+        },
         "serviceName": {
           "description": "Specifies the name of the referenced service.",
           "type": "string"
@@ -10870,10 +10874,6 @@
           "description": "Specifies the port of the referenced service."
         }
       },
-      "required": [
-        "serviceName",
-        "servicePort"
-      ],
       "type": "object"
     },
     "io.k8s.api.extensions.v1beta1.IngressList": {
@@ -11790,6 +11790,10 @@
     "io.k8s.api.networking.v1beta1.IngressBackend": {
       "description": "IngressBackend describes all endpoints for a given service and port.",
       "properties": {
+        "resource": {
+          "$ref": "#/definitions/io.k8s.api.core.v1.TypedLocalObjectReference",
+          "description": "Resource is an ObjectRef to another Kubernetes resource in the namespace of the Ingress object. If resource is specified, serviceName and servicePort must not be specified."
+        },
         "serviceName": {
           "description": "Specifies the name of the referenced service.",
           "type": "string"
@@ -11799,10 +11803,6 @@
           "description": "Specifies the port of the referenced service."
         }
       },
-      "required": [
-        "serviceName",
-        "servicePort"
-      ],
       "type": "object"
     },
     "io.k8s.api.networking.v1beta1.IngressClass": {

pkg/apis/extensions/v1beta1/zz_generated.conversion.go

@@ -1298,6 +1298,7 @@ func Convert_networking_Ingress_To_v1beta1_Ingress(in *networking.Ingress, out *
 func autoConvert_v1beta1_IngressBackend_To_networking_IngressBackend(in *v1beta1.IngressBackend, out *networking.IngressBackend, s conversion.Scope) error {
 	out.ServiceName = in.ServiceName
 	out.ServicePort = in.ServicePort
+	out.Resource = (*core.TypedLocalObjectReference)(unsafe.Pointer(in.Resource))
 	return nil
 }
 
@@ -1309,6 +1310,7 @@ func Convert_v1beta1_IngressBackend_To_networking_IngressBackend(in *v1beta1.Ing
 func autoConvert_networking_IngressBackend_To_v1beta1_IngressBackend(in *networking.IngressBackend, out *v1beta1.IngressBackend, s conversion.Scope) error {
 	out.ServiceName = in.ServiceName
 	out.ServicePort = in.ServicePort
+	out.Resource = (*v1.TypedLocalObjectReference)(unsafe.Pointer(in.Resource))
 	return nil
 }
 

pkg/apis/networking/types.go

@@ -464,8 +464,16 @@ type HTTPIngressPath struct {
 // IngressBackend describes all endpoints for a given service and port.
 type IngressBackend struct {
 	// Specifies the name of the referenced service.
+	// +optional
 	ServiceName string
 
 	// Specifies the port of the referenced service.
+	// +optional
 	ServicePort intstr.IntOrString
+
+	// Resource is an ObjectRef to another Kubernetes resource in the namespace
+	// of the Ingress object. If resource is specified, serviceName and servicePort
+	// must not be specified.
+	// +optional
+	Resource *api.TypedLocalObjectReference
 }

pkg/apis/networking/v1beta1/zz_generated.conversion.go

@@ -255,6 +255,7 @@ func Convert_networking_Ingress_To_v1beta1_Ingress(in *networking.Ingress, out *
 func autoConvert_v1beta1_IngressBackend_To_networking_IngressBackend(in *v1beta1.IngressBackend, out *networking.IngressBackend, s conversion.Scope) error {
 	out.ServiceName = in.ServiceName
 	out.ServicePort = in.ServicePort
+	out.Resource = (*core.TypedLocalObjectReference)(unsafe.Pointer(in.Resource))
 	return nil
 }
 
@@ -266,6 +267,7 @@ func Convert_v1beta1_IngressBackend_To_networking_IngressBackend(in *v1beta1.Ing
 func autoConvert_networking_IngressBackend_To_v1beta1_IngressBackend(in *networking.IngressBackend, out *v1beta1.IngressBackend, s conversion.Scope) error {
 	out.ServiceName = in.ServiceName
 	out.ServicePort = in.ServicePort
+	out.Resource = (*v1.TypedLocalObjectReference)(unsafe.Pointer(in.Resource))
 	return nil
 }
 

pkg/apis/networking/validation/validation.go

@@ -199,6 +199,7 @@ var ValidateIngressName = apimachineryvalidation.NameIsDNSSubdomain
 // IngressValidationOptions cover beta to GA transitions for HTTP PathType
 type IngressValidationOptions struct {
 	requireRegexPath     bool
+	allowResourceBackend bool
 }
 
 // ValidateIngress validates Ingresses on create and update.
@@ -215,6 +216,8 @@ func ValidateIngressCreate(ingress *networking.Ingress, requestGV schema.GroupVe
 	opts = IngressValidationOptions{
 		// TODO(robscott): Remove regex validation for 1.19.
 		requireRegexPath: true,
+		// TODO(cmluciano): Allow resource backend for 1.19.
+		allowResourceBackend: false,
 	}
 	allErrs = append(allErrs, validateIngress(ingress, opts, requestGV)...)
 	annotationVal, annotationIsSet := ingress.Annotations[annotationIngressClass]
@@ -234,6 +237,7 @@ func ValidateIngressUpdate(ingress, oldIngress *networking.Ingress, requestGV sc
 		// Only require regex path validation for this Ingress if the previous
 		// version of the Ingress also passed that validation.
 		requireRegexPath:     allPathsPassRegexValidation(oldIngress),
+		allowResourceBackend: resourceBackendPresent(oldIngress),
 	}
 
 	allErrs = append(allErrs, validateIngress(ingress, opts, requestGV)...)
@@ -269,7 +273,7 @@ func ValidateIngressSpec(spec *networking.IngressSpec, fldPath *field.Path, opts
 		allErrs = append(allErrs, field.Invalid(fldPath, spec.Rules, errMsg))
 	}
 	if spec.Backend != nil {
-		allErrs = append(allErrs, validateIngressBackend(spec.Backend, fldPath.Child("backend"))...)
+		allErrs = append(allErrs, validateIngressBackend(spec.Backend, fldPath.Child("backend"), opts)...)
 	}
 	if len(spec.Rules) > 0 {
 		allErrs = append(allErrs, validateIngressRules(spec.Rules, fldPath.Child("rules"), opts)...)
@@ -381,15 +385,25 @@ func validateHTTPIngressPath(path *networking.HTTPIngressPath, fldPath *field.Pa
 		}
 	}
 
-	allErrs = append(allErrs, validateIngressBackend(&path.Backend, fldPath.Child("backend"))...)
+	allErrs = append(allErrs, validateIngressBackend(&path.Backend, fldPath.Child("backend"), opts)...)
 	return allErrs
 }
 
 // validateIngressBackend tests if a given backend is valid.
-func validateIngressBackend(backend *networking.IngressBackend, fldPath *field.Path) field.ErrorList {
+func validateIngressBackend(backend *networking.IngressBackend, fldPath *field.Path, opts IngressValidationOptions) field.ErrorList {
 	allErrs := field.ErrorList{}
 
-	// All backends must reference a single local service by name, and a single service port by name or number.
+	hasResourceBackend := backend.Resource != nil
+	hasServiceBackend := len(backend.ServiceName) > 0 || backend.ServicePort.IntVal != 0 || len(backend.ServicePort.StrVal) > 0
+
+	switch {
+	case hasResourceBackend && hasServiceBackend:
+		return append(allErrs, field.Invalid(fldPath, "", "cannot set both resource and service backends"))
+	case hasResourceBackend && !opts.allowResourceBackend:
+		return append(allErrs, field.Forbidden(fldPath.Child("resource"), "not supported; only service backends are supported in this version"))
+	case hasResourceBackend:
+		allErrs = append(allErrs, validateIngressTypedLocalObjectReference(backend.Resource, fldPath.Child("resource"))...)
+	default:
 		if len(backend.ServiceName) == 0 {
 			return append(allErrs, field.Required(fldPath.Child("serviceName"), ""))
 		}
@@ -397,6 +411,8 @@ func validateIngressBackend(backend *networking.IngressBackend, fldPath *field.P
 			allErrs = append(allErrs, field.Invalid(fldPath.Child("serviceName"), backend.ServiceName, msg))
 		}
 		allErrs = append(allErrs, apivalidation.ValidatePortNumOrName(backend.ServicePort, fldPath.Child("servicePort"))...)
+
+	}
 	return allErrs
 }
 
@@ -426,7 +442,7 @@ func validateIngressClassSpec(spec *networking.IngressClassSpec, fldPath *field.
 		allErrs = append(allErrs, field.TooLong(fldPath.Child("controller"), spec.Controller, maxLenIngressClassController))
 	}
 	allErrs = append(allErrs, validation.IsDomainPrefixedPath(fldPath.Child("controller"), spec.Controller)...)
-	allErrs = append(allErrs, validateIngressClassParameters(spec.Parameters, fldPath.Child("parameters"))...)
+	allErrs = append(allErrs, validateIngressTypedLocalObjectReference(spec.Parameters, fldPath.Child("parameters"))...)
 	return allErrs
 }
 
@@ -436,8 +452,8 @@ func validateIngressClassSpecUpdate(newSpec, oldSpec *networking.IngressClassSpe
 	return apivalidation.ValidateImmutableField(newSpec.Controller, oldSpec.Controller, fldPath.Child("controller"))
 }
 
-// validateIngressClassParameters ensures that Parameters fields are valid.
+// validateIngressTypedLocalObjectReference ensures that Parameters fields are valid.
-func validateIngressClassParameters(params *api.TypedLocalObjectReference, fldPath *field.Path) field.ErrorList {
+func validateIngressTypedLocalObjectReference(params *api.TypedLocalObjectReference, fldPath *field.Path) field.ErrorList {
 	allErrs := field.ErrorList{}
 
 	if params == nil {
@@ -487,3 +503,20 @@ func allPathsPassRegexValidation(ingress *networking.Ingress) bool {
 	}
 	return true
 }
+
+func resourceBackendPresent(ingress *networking.Ingress) bool {
+	if ingress.Spec.Backend != nil && ingress.Spec.Backend.Resource != nil {
+		return true
+	}
+	for _, rule := range ingress.Spec.Rules {
+		if rule.HTTP == nil {
+			continue
+		}
+		for _, path := range rule.HTTP.Paths {
+			if path.Backend.Resource != nil {
+				return true
+			}
+		}
+	}
+	return false
+}

pkg/apis/networking/validation/validation_test.go

@@ -1030,6 +1030,88 @@ func TestValidateIngress(t *testing.T) {
 				"spec.rules[0].host",
 			},
 		},
+		"path resource backend and service name are not allowed together": {
+			tweakIngress: func(ing *networking.Ingress) {
+				ing.Spec.Rules[0].IngressRuleValue = networking.IngressRuleValue{
+					HTTP: &networking.HTTPIngressRuleValue{
+						Paths: []networking.HTTPIngressPath{
+							{
+								Path:     "/foo",
+								PathType: &pathTypeImplementationSpecific,
+								Backend: networking.IngressBackend{
+									ServiceName: "default-backend",
+									Resource: &api.TypedLocalObjectReference{
+										APIGroup: utilpointer.StringPtr("example.com"),
+										Kind:     "foo",
+										Name:     "bar",
+									},
+								},
+							},
+						},
+					},
+				}
+			},
+			expectErrsOnFields: []string{
+				"spec.rules[0].http.paths[0].backend",
+			},
+		},
+		"path resource backend and service port are not allowed together": {
+			tweakIngress: func(ing *networking.Ingress) {
+				ing.Spec.Rules[0].IngressRuleValue = networking.IngressRuleValue{
+					HTTP: &networking.HTTPIngressRuleValue{
+						Paths: []networking.HTTPIngressPath{
+							{
+								Path:     "/foo",
+								PathType: &pathTypeImplementationSpecific,
+								Backend: networking.IngressBackend{
+									ServicePort: intstr.FromInt(80),
+									Resource: &api.TypedLocalObjectReference{
+										APIGroup: utilpointer.StringPtr("example.com"),
+										Kind:     "foo",
+										Name:     "bar",
+									},
+								},
+							},
+						},
+					},
+				}
+			},
+			expectErrsOnFields: []string{
+				"spec.rules[0].http.paths[0].backend",
+			},
+		},
+		"spec.backend resource and service name are not allowed together": {
+			groupVersion: &networkingv1beta1.SchemeGroupVersion,
+			tweakIngress: func(ing *networking.Ingress) {
+				ing.Spec.Backend = &networking.IngressBackend{
+					ServiceName: "default-backend",
+					Resource: &api.TypedLocalObjectReference{
+						APIGroup: utilpointer.StringPtr("example.com"),
+						Kind:     "foo",
+						Name:     "bar",
+					},
+				}
+			},
+			expectErrsOnFields: []string{
+				"spec.backend",
+			},
+		},
+		"spec.backend resource and service port are not allowed together": {
+			groupVersion: &networkingv1beta1.SchemeGroupVersion,
+			tweakIngress: func(ing *networking.Ingress) {
+				ing.Spec.Backend = &networking.IngressBackend{
+					ServicePort: intstr.FromInt(80),
+					Resource: &api.TypedLocalObjectReference{
+						APIGroup: utilpointer.StringPtr("example.com"),
+						Kind:     "foo",
+						Name:     "bar",
+					},
+				}
+			},
+			expectErrsOnFields: []string{
+				"spec.backend",
+			},
+		},
 	}
 
 	for name, testCase := range testCases {
@@ -1181,6 +1263,11 @@ func TestValidateIngressCreate(t *testing.T) {
 		ServiceName: "default-backend",
 		ServicePort: intstr.FromInt(80),
 	}
+	resourceBackend := &api.TypedLocalObjectReference{
+		APIGroup: utilpointer.StringPtr("example.com"),
+		Kind:     "foo",
+		Name:     "bar",
+	}
 	baseIngress := networking.Ingress{
 		ObjectMeta: metav1.ObjectMeta{
 			Name:            "test123",
@@ -1250,6 +1337,31 @@ func TestValidateIngressCreate(t *testing.T) {
 			},
 			expectedErrs: field.ErrorList{field.Invalid(field.NewPath("spec.rules[0].http.paths[0].path"), "/([a-z0-9]*)[", "must be a valid regex")},
 		},
+		"Spec.Backend.Resource field not allowed on create": {
+			tweakIngress: func(ingress *networking.Ingress) {
+				ingress.Spec.Backend = &networking.IngressBackend{
+					Resource: resourceBackend}
+			},
+			expectedErrs: field.ErrorList{field.Forbidden(field.NewPath("spec.backend.resource"), "not supported; only service backends are supported in this version")},
+		},
+		"Paths.Backend.Resource field not allowed on create": {
+			tweakIngress: func(ingress *networking.Ingress) {
+				ingress.Spec.Rules = []networking.IngressRule{{
+					Host: "foo.bar.com",
+					IngressRuleValue: networking.IngressRuleValue{
+						HTTP: &networking.HTTPIngressRuleValue{
+							Paths: []networking.HTTPIngressPath{{
+								Path:     "/([a-z0-9]*)",
+								PathType: &implementationPathType,
+								Backend: networking.IngressBackend{
+									Resource: resourceBackend},
+							}},
+						},
+					},
+				}}
+			},
+			expectedErrs: field.ErrorList{field.Forbidden(field.NewPath("spec.rules[0].http.paths[0].backend.resource"), "not supported; only service backends are supported in this version")},
+		},
 	}
 
 	for name, testCase := range testCases {
@@ -1277,6 +1389,11 @@ func TestValidateIngressUpdate(t *testing.T) {
 		ServiceName: "default-backend",
 		ServicePort: intstr.FromInt(80),
 	}
+	resourceBackend := &api.TypedLocalObjectReference{
+		APIGroup: utilpointer.StringPtr("example.com"),
+		Kind:     "foo",
+		Name:     "bar",
+	}
 	baseIngress := networking.Ingress{
 		ObjectMeta: metav1.ObjectMeta{
 			Name:            "test123",
@@ -1427,6 +1544,151 @@ func TestValidateIngressUpdate(t *testing.T) {
 			},
 			expectedErrs: field.ErrorList{},
 		},
+		"new Backend.Resource not allowed on update": {
+			tweakIngresses: func(newIngress, oldIngress *networking.Ingress) {
+				oldIngress.Spec.Backend = &defaultBackend
+				newIngress.Spec.Backend = &networking.IngressBackend{
+					Resource: resourceBackend}
+			},
+			expectedErrs: field.ErrorList{field.Forbidden(field.NewPath("spec.backend.resource"), "not supported; only service backends are supported in this version")},
+		},
+		"old Backend.Resource allowed on update": {
+			tweakIngresses: func(newIngress, oldIngress *networking.Ingress) {
+				oldIngress.Spec.Backend = &networking.IngressBackend{
+					Resource: resourceBackend}
+				newIngress.Spec.Backend = &networking.IngressBackend{
+					Resource: resourceBackend}
+			},
+			expectedErrs: field.ErrorList{},
+		},
+		"changing spec.backend from resource -> no resource": {
+			tweakIngresses: func(newIngress, oldIngress *networking.Ingress) {
+				oldIngress.Spec.Backend = &networking.IngressBackend{
+					Resource: resourceBackend}
+				newIngress.Spec.Backend = &defaultBackend
+			},
+			expectedErrs: field.ErrorList{},
+		},
+		"changing path backend from resource -> no resource": {
+			tweakIngresses: func(newIngress, oldIngress *networking.Ingress) {
+				oldIngress.Spec.Rules = []networking.IngressRule{{
+					Host: "foo.bar.com",
+					IngressRuleValue: networking.IngressRuleValue{
+						HTTP: &networking.HTTPIngressRuleValue{
+							Paths: []networking.HTTPIngressPath{{
+								Path:     "/foo[",
+								PathType: &implementationPathType,
+								Backend: networking.IngressBackend{
+									Resource: resourceBackend},
+							}},
+						},
+					},
+				}}
+				newIngress.Spec.Rules = []networking.IngressRule{{
+					Host: "foo.bar.com",
+					IngressRuleValue: networking.IngressRuleValue{
+						HTTP: &networking.HTTPIngressRuleValue{
+							Paths: []networking.HTTPIngressPath{{
+								Path:     "/bar[",
+								PathType: &implementationPathType,
+								Backend:  defaultBackend,
+							}},
+						},
+					},
+				}}
+			},
+			expectedErrs: field.ErrorList{},
+		},
+		"changing path backend from resource -> resource": {
+			tweakIngresses: func(newIngress, oldIngress *networking.Ingress) {
+				oldIngress.Spec.Rules = []networking.IngressRule{{
+					Host: "foo.bar.com",
+					IngressRuleValue: networking.IngressRuleValue{
+						HTTP: &networking.HTTPIngressRuleValue{
+							Paths: []networking.HTTPIngressPath{{
+								Path:     "/foo[",
+								PathType: &implementationPathType,
+								Backend: networking.IngressBackend{
+									Resource: resourceBackend},
+							}},
+						},
+					},
+				}}
+				newIngress.Spec.Rules = []networking.IngressRule{{
+					Host: "foo.bar.com",
+					IngressRuleValue: networking.IngressRuleValue{
+						HTTP: &networking.HTTPIngressRuleValue{
+							Paths: []networking.HTTPIngressPath{{
+								Path:     "/bar[",
+								PathType: &implementationPathType,
+								Backend: networking.IngressBackend{
+									Resource: resourceBackend},
+							}},
+						},
+					},
+				}}
+			},
+			expectedErrs: field.ErrorList{},
+		},
+		"changing path backend from non-resource -> non-resource": {
+			tweakIngresses: func(newIngress, oldIngress *networking.Ingress) {
+				oldIngress.Spec.Rules = []networking.IngressRule{{
+					Host: "foo.bar.com",
+					IngressRuleValue: networking.IngressRuleValue{
+						HTTP: &networking.HTTPIngressRuleValue{
+							Paths: []networking.HTTPIngressPath{{
+								Path:     "/foo[",
+								PathType: &implementationPathType,
+								Backend:  defaultBackend,
+							}},
+						},
+					},
+				}}
+				newIngress.Spec.Rules = []networking.IngressRule{{
+					Host: "foo.bar.com",
+					IngressRuleValue: networking.IngressRuleValue{
+						HTTP: &networking.HTTPIngressRuleValue{
+							Paths: []networking.HTTPIngressPath{{
+								Path:     "/bar[",
+								PathType: &implementationPathType,
+								Backend:  defaultBackend,
+							}},
+						},
+					},
+				}}
+			},
+			expectedErrs: field.ErrorList{},
+		},
+		"changing path backend from non-resource -> resource": {
+			tweakIngresses: func(newIngress, oldIngress *networking.Ingress) {
+				oldIngress.Spec.Rules = []networking.IngressRule{{
+					Host: "foo.bar.com",
+					IngressRuleValue: networking.IngressRuleValue{
+						HTTP: &networking.HTTPIngressRuleValue{
+							Paths: []networking.HTTPIngressPath{{
+								Path:     "/foo[",
+								PathType: &implementationPathType,
+								Backend:  defaultBackend,
+							}},
+						},
+					},
+				}}
+				newIngress.Spec.Rules = []networking.IngressRule{{
+					Host: "foo.bar.com",
+					IngressRuleValue: networking.IngressRuleValue{
+						HTTP: &networking.HTTPIngressRuleValue{
+							Paths: []networking.HTTPIngressPath{{
+								Path:     "/bar[",
+								PathType: &implementationPathType,
+								Backend: networking.IngressBackend{
+									Resource: resourceBackend},
+							}},
+						},
+					},
+				}}
+			},
+			expectedErrs: field.ErrorList{field.Forbidden(field.NewPath("spec.rules[0].http.paths[0].backend.resource"), "not supported; only service backends are supported in this version")},
+		},
 	}
 
 	for name, testCase := range testCases {
@@ -1816,3 +2078,151 @@ func TestValidateIngressStatusUpdate(t *testing.T) {
 		}
 	}
 }
+
+func TestValidateResourceBackendPresent(t *testing.T) {
+	implementationPathType := networking.PathTypeImplementationSpecific
+	defaultBackend := networking.IngressBackend{
+		ServiceName: "default-backend",
+		ServicePort: intstr.FromInt(80),
+	}
+	resourceBackend := &api.TypedLocalObjectReference{
+		APIGroup: utilpointer.StringPtr("example.com"),
+		Kind:     "foo",
+		Name:     "bar",
+	}
+	baseIngress := networking.Ingress{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      "foo",
+			Namespace: metav1.NamespaceDefault,
+		},
+		Spec: networking.IngressSpec{
+			Backend: &networking.IngressBackend{
+				ServiceName: "default-backend",
+				ServicePort: intstr.FromInt(80),
+			},
+			Rules: []networking.IngressRule{
+				{
+					Host: "foo.bar.com",
+					IngressRuleValue: networking.IngressRuleValue{
+						HTTP: &networking.HTTPIngressRuleValue{
+							Paths: []networking.HTTPIngressPath{
+								{
+									Path:     "/foo",
+									PathType: &implementationPathType,
+									Backend:  defaultBackend,
+								},
+							},
+						},
+					},
+				},
+			},
+		},
+		Status: networking.IngressStatus{
+			LoadBalancer: api.LoadBalancerStatus{
+				Ingress: []api.LoadBalancerIngress{
+					{IP: "127.0.0.1"},
+				},
+			},
+		},
+	}
+	testCases := map[string]struct {
+		groupVersion          *schema.GroupVersion
+		tweakIngress          func(ing *networking.Ingress)
+		expectResourceBackend bool
+	}{
+		"nil spec.Backend and no paths": {
+			tweakIngress: func(ing *networking.Ingress) {
+				ing.Spec.Backend = nil
+				ing.Spec.Rules[0].IngressRuleValue.HTTP.Paths[0].Path = ""
+			},
+			expectResourceBackend: false,
+		},
+		"nil spec.Backend.Resource and no paths": {
+			tweakIngress: func(ing *networking.Ingress) {
+				ing.Spec.Backend = nil
+				ing.Spec.Rules[0].IngressRuleValue.HTTP.Paths = []networking.HTTPIngressPath{}
+			},
+			expectResourceBackend: false,
+		},
+		"non-nil spec.Backend.Resource and no paths": {
+			tweakIngress: func(ing *networking.Ingress) {
+				ing.Spec.Backend = &networking.IngressBackend{
+					Resource: resourceBackend,
+				}
+				ing.Spec.Rules[0].IngressRuleValue.HTTP.Paths[0].Path = ""
+			},
+			expectResourceBackend: true,
+		},
+		"nil spec.Backend, one rule with nil HTTP ": {
+			tweakIngress: func(ing *networking.Ingress) {
+				ing.Spec.Backend = nil
+				ing.Spec.Rules[0].IngressRuleValue.HTTP = nil
+			},
+			expectResourceBackend: false,
+		},
+		"nil spec.Backend, one rule with non-nil HTTP, no paths": {
+			tweakIngress: func(ing *networking.Ingress) {
+				ing.Spec.Backend = nil
+				ing.Spec.Rules[0].IngressRuleValue = networking.IngressRuleValue{
+					HTTP: &networking.HTTPIngressRuleValue{
+						Paths: []networking.HTTPIngressPath{},
+					},
+				}
+			},
+			expectResourceBackend: false,
+		},
+		"nil spec.Backend, one rule with non-nil HTTP, one path with nil Backend.Resource": {
+			tweakIngress: func(ing *networking.Ingress) {
+				ing.Spec.Backend = nil
+				ing.Spec.Rules[0].IngressRuleValue = networking.IngressRuleValue{
+					HTTP: &networking.HTTPIngressRuleValue{
+						Paths: []networking.HTTPIngressPath{
+							{
+								Path:     "/foo",
+								PathType: &implementationPathType,
+								Backend: networking.IngressBackend{
+									Resource: nil,
+								},
+							},
+						},
+					},
+				}
+			},
+			expectResourceBackend: false,
+		},
+		"nil spec.Backend, one rule with non-nil HTTP, one path with non-nil Backend.Resource": {
+			tweakIngress: func(ing *networking.Ingress) {
+				ing.Spec.Backend = nil
+				ing.Spec.Rules[0].IngressRuleValue = networking.IngressRuleValue{
+					HTTP: &networking.HTTPIngressRuleValue{
+						Paths: []networking.HTTPIngressPath{
+							{
+								Path:     "/foo",
+								PathType: &implementationPathType,
+								Backend: networking.IngressBackend{
+									Resource: resourceBackend,
+								},
+							},
+						},
+					},
+				}
+			},
+			expectResourceBackend: true,
+		},
+	}
+
+	for name, testCase := range testCases {
+		t.Run(name, func(t *testing.T) {
+			ingress := baseIngress.DeepCopy()
+			testCase.tweakIngress(ingress)
+			gv := testCase.groupVersion
+			if gv == nil {
+				gv = &networkingv1.SchemeGroupVersion
+			}
+			isBackendAllowed := resourceBackendPresent(ingress)
+			if isBackendAllowed != testCase.expectResourceBackend {
+				t.Errorf("Expected resourceBackendPresent to return: %v, got: %v", testCase.expectResourceBackend, isBackendAllowed)
+			}
+		})
+	}
+}

pkg/apis/networking/zz_generated.deepcopy.go

@@ -35,7 +35,7 @@ func (in *HTTPIngressPath) DeepCopyInto(out *HTTPIngressPath) {
 		*out = new(PathType)
 		**out = **in
 	}
-	out.Backend = in.Backend
+	in.Backend.DeepCopyInto(&out.Backend)
 	return
 }
 
@@ -125,6 +125,11 @@ func (in *Ingress) DeepCopyObject() runtime.Object {
 func (in *IngressBackend) DeepCopyInto(out *IngressBackend) {
 	*out = *in
 	out.ServicePort = in.ServicePort
+	if in.Resource != nil {
+		in, out := &in.Resource, &out.Resource
+		*out = new(core.TypedLocalObjectReference)
+		(*in).DeepCopyInto(*out)
+	}
 	return
 }
 
@@ -301,7 +306,7 @@ func (in *IngressSpec) DeepCopyInto(out *IngressSpec) {
 	if in.Backend != nil {
 		in, out := &in.Backend, &out.Backend
 		*out = new(IngressBackend)
-		**out = **in
+		(*in).DeepCopyInto(*out)
 	}
 	if in.TLS != nil {
 		in, out := &in.TLS, &out.TLS

staging/src/k8s.io/api/extensions/v1beta1/generated.pb.go

@@ -1683,239 +1683,241 @@ func init() {
 }
 
 var fileDescriptor_cdc93917efc28165 = []byte{
-	// 3705 bytes of a gzipped FileDescriptorProto
+	// 3743 bytes of a gzipped FileDescriptorProto
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+	0xb2, 0xf1, 0xdf, 0x25, 0xb8, 0x7c, 0x42, 0x0d, 0xe6, 0x5d, 0x51, 0x48, 0x3b, 0xc8, 0xc5, 0x9f,
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+	0x25, 0xf8, 0xd9, 0xc0, 0xc7, 0x1e, 0x54, 0x0f, 0x1d, 0x92, 0x6a, 0xe4, 0x90, 0x2c, 0xa4, 0x03,
-	0xf1, 0x82, 0xf4, 0xc7, 0x3f, 0x2c, 0x5c, 0xf8, 0xb0, 0x28, 0xe0, 0xfe, 0x37, 0x00, 0x00, 0xff,
+	0xbc, 0xba, 0x76, 0xb9, 0xfa, 0xcd, 0xe7, 0xdf, 0x2d, 0x5c, 0xf8, 0xe6, 0xbb, 0x85, 0x0b, 0xdf,
-	0xff, 0xb6, 0xd9, 0x2e, 0xa8, 0x61, 0x3e, 0x00, 0x00,
+	0x7e, 0xb7, 0x70, 0xe1, 0x0f, 0x8e, 0x17, 0xa4, 0xe7, 0xc7, 0x0b, 0xd2, 0x37, 0xc7, 0x0b, 0xd2,
+	0xb7, 0xc7, 0x0b, 0xd2, 0x7f, 0x1e, 0x2f, 0x48, 0x7f, 0xfa, 0xfd, 0xc2, 0x85, 0xf7, 0x8b, 0x02,
+	0xee, 0xff, 0x02, 0x00, 0x00, 0xff, 0xff, 0x98, 0xf4, 0xad, 0x8a, 0xba, 0x3e, 0x00, 0x00,
 }
 
 func (m *AllowedCSIDriver) Marshal() (dAtA []byte, err error) {
@@ -3045,6 +3047,18 @@ func (m *IngressBackend) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.Resource != nil {
+		{
+			size, err := m.Resource.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintGenerated(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x1a
+	}
 	{
 		size, err := m.ServicePort.MarshalToSizedBuffer(dAtA[:i])
 		if err != nil {
@@ -5182,6 +5196,10 @@ func (m *IngressBackend) Size() (n int) {
 	n += 1 + l + sovGenerated(uint64(l))
 	l = m.ServicePort.Size()
 	n += 1 + l + sovGenerated(uint64(l))
+	if m.Resource != nil {
+		l = m.Resource.Size()
+		n += 1 + l + sovGenerated(uint64(l))
+	}
 	return n
 }
 
@@ -6156,6 +6174,7 @@ func (this *IngressBackend) String() string {
 	s := strings.Join([]string{`&IngressBackend{`,
 		`ServiceName:` + fmt.Sprintf("%v", this.ServiceName) + `,`,
 		`ServicePort:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.ServicePort), "IntOrString", "intstr.IntOrString", 1), `&`, ``, 1) + `,`,
+		`Resource:` + strings.Replace(fmt.Sprintf("%v", this.Resource), "TypedLocalObjectReference", "v11.TypedLocalObjectReference", 1) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -10316,6 +10335,42 @@ func (m *IngressBackend) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 3:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Resource", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.Resource == nil {
+				m.Resource = &v11.TypedLocalObjectReference{}
+			}
+			if err := m.Resource.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipGenerated(dAtA[iNdEx:])

staging/src/k8s.io/api/extensions/v1beta1/generated.proto

@@ -512,10 +512,18 @@ message Ingress {
 // IngressBackend describes all endpoints for a given service and port.
 message IngressBackend {
   // Specifies the name of the referenced service.
+  // +optional
   optional string serviceName = 1;
 
   // Specifies the port of the referenced service.
+  // +optional
   optional k8s.io.apimachinery.pkg.util.intstr.IntOrString servicePort = 2;
+
+  // Resource is an ObjectRef to another Kubernetes resource in the namespace
+  // of the Ingress object. If resource is specified, serviceName and servicePort
+  // must not be specified.
+  // +optional
+  optional k8s.io.api.core.v1.TypedLocalObjectReference resource = 3;
 }
 
 // IngressList is a collection of Ingress.

staging/src/k8s.io/api/extensions/v1beta1/types.go

@@ -758,10 +758,18 @@ type HTTPIngressPath struct {
 // IngressBackend describes all endpoints for a given service and port.
 type IngressBackend struct {
 	// Specifies the name of the referenced service.
-	ServiceName string `json:"serviceName" protobuf:"bytes,1,opt,name=serviceName"`
+	// +optional
+	ServiceName string `json:"serviceName,omitempty" protobuf:"bytes,1,opt,name=serviceName"`
 
 	// Specifies the port of the referenced service.
-	ServicePort intstr.IntOrString `json:"servicePort" protobuf:"bytes,2,opt,name=servicePort"`
+	// +optional
+	ServicePort intstr.IntOrString `json:"servicePort,omitempty" protobuf:"bytes,2,opt,name=servicePort"`
+
+	// Resource is an ObjectRef to another Kubernetes resource in the namespace
+	// of the Ingress object. If resource is specified, serviceName and servicePort
+	// must not be specified.
+	// +optional
+	Resource *v1.TypedLocalObjectReference `json:"resource,omitempty" protobuf:"bytes,3,opt,name=resource"`
 }
 
 // +genclient

staging/src/k8s.io/api/extensions/v1beta1/types_swagger_doc_generated.go

@@ -294,6 +294,7 @@ var map_IngressBackend = map[string]string{
 	"":            "IngressBackend describes all endpoints for a given service and port.",
 	"serviceName": "Specifies the name of the referenced service.",
 	"servicePort": "Specifies the port of the referenced service.",
+	"resource":    "Resource is an ObjectRef to another Kubernetes resource in the namespace of the Ingress object. If resource is specified, serviceName and servicePort must not be specified.",
 }
 
 func (IngressBackend) SwaggerDoc() map[string]string {

staging/src/k8s.io/api/extensions/v1beta1/zz_generated.deepcopy.go

@@ -463,7 +463,7 @@ func (in *HTTPIngressPath) DeepCopyInto(out *HTTPIngressPath) {
 		*out = new(PathType)
 		**out = **in
 	}
-	out.Backend = in.Backend
+	in.Backend.DeepCopyInto(&out.Backend)
 	return
 }
 
@@ -585,6 +585,11 @@ func (in *Ingress) DeepCopyObject() runtime.Object {
 func (in *IngressBackend) DeepCopyInto(out *IngressBackend) {
 	*out = *in
 	out.ServicePort = in.ServicePort
+	if in.Resource != nil {
+		in, out := &in.Resource, &out.Resource
+		*out = new(corev1.TypedLocalObjectReference)
+		(*in).DeepCopyInto(*out)
+	}
 	return
 }
 
@@ -680,7 +685,7 @@ func (in *IngressSpec) DeepCopyInto(out *IngressSpec) {
 	if in.Backend != nil {
 		in, out := &in.Backend, &out.Backend
 		*out = new(IngressBackend)
-		**out = **in
+		(*in).DeepCopyInto(*out)
 	}
 	if in.TLS != nil {
 		in, out := &in.TLS, &out.TLS

staging/src/k8s.io/api/networking/v1beta1/generated.pb.go

@@ -429,68 +429,69 @@ func init() {
 }
 
 var fileDescriptor_5bea11de0ceb8f53 = []byte{
-	// 965 bytes of a gzipped FileDescriptorProto
+	// 990 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x55, 0x4f, 0x6f, 0xe3, 0x44,
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-	0xff, 0x98, 0xb5, 0xaf, 0x37, 0xb5, 0x4c, 0xff, 0x05, 0x00, 0x00, 0xff, 0xff, 0xfd, 0x12, 0x75,
+	0x73, 0xe3, 0xc5, 0x95, 0xb9, 0xf1, 0xc3, 0xdc, 0x34, 0x2e, 0xe6, 0xa6, 0xf1, 0x7c, 0x6e, 0x1a,
-	0x26, 0xcc, 0x0a, 0x00, 0x00,
+	0x2f, 0xe6, 0xa6, 0xf1, 0xd7, 0xdc, 0x34, 0x7e, 0xfe, 0xdb, 0xdc, 0xf8, 0x6a, 0x4b, 0xd3, 0xf4,
+	0x6f, 0x00, 0x00, 0x00, 0xff, 0xff, 0x6e, 0x54, 0x4d, 0x9d, 0x25, 0x0b, 0x00, 0x00,
 }
 
 func (m *HTTPIngressPath) Marshal() (dAtA []byte, err error) {
@@ -648,6 +649,18 @@ func (m *IngressBackend) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.Resource != nil {
+		{
+			size, err := m.Resource.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintGenerated(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x1a
+	}
 	{
 		size, err := m.ServicePort.MarshalToSizedBuffer(dAtA[:i])
 		if err != nil {
@@ -1124,6 +1137,10 @@ func (m *IngressBackend) Size() (n int) {
 	n += 1 + l + sovGenerated(uint64(l))
 	l = m.ServicePort.Size()
 	n += 1 + l + sovGenerated(uint64(l))
+	if m.Resource != nil {
+		l = m.Resource.Size()
+		n += 1 + l + sovGenerated(uint64(l))
+	}
 	return n
 }
 
@@ -1324,6 +1341,7 @@ func (this *IngressBackend) String() string {
 	s := strings.Join([]string{`&IngressBackend{`,
 		`ServiceName:` + fmt.Sprintf("%v", this.ServiceName) + `,`,
 		`ServicePort:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.ServicePort), "IntOrString", "intstr.IntOrString", 1), `&`, ``, 1) + `,`,
+		`Resource:` + strings.Replace(fmt.Sprintf("%v", this.Resource), "TypedLocalObjectReference", "v11.TypedLocalObjectReference", 1) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -1939,6 +1957,42 @@ func (m *IngressBackend) Unmarshal(dAtA []byte) error {
 				return err
 			}
 			iNdEx = postIndex
+		case 3:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Resource", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.Resource == nil {
+				m.Resource = &v11.TypedLocalObjectReference{}
+			}
+			if err := m.Resource.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipGenerated(dAtA[iNdEx:])

staging/src/k8s.io/api/networking/v1beta1/generated.proto

@@ -96,10 +96,18 @@ message Ingress {
 // IngressBackend describes all endpoints for a given service and port.
 message IngressBackend {
   // Specifies the name of the referenced service.
+  // +optional
   optional string serviceName = 1;
 
   // Specifies the port of the referenced service.
+  // +optional
   optional k8s.io.apimachinery.pkg.util.intstr.IntOrString servicePort = 2;
+
+  // Resource is an ObjectRef to another Kubernetes resource in the namespace
+  // of the Ingress object. If resource is specified, serviceName and servicePort
+  // must not be specified.
+  // +optional
+  optional k8s.io.api.core.v1.TypedLocalObjectReference resource = 3;
 }
 
 // IngressClass represents the class of the Ingress, referenced by the Ingress

staging/src/k8s.io/api/networking/v1beta1/types.go

@@ -252,10 +252,18 @@ type HTTPIngressPath struct {
 // IngressBackend describes all endpoints for a given service and port.
 type IngressBackend struct {
 	// Specifies the name of the referenced service.
-	ServiceName string `json:"serviceName" protobuf:"bytes,1,opt,name=serviceName"`
+	// +optional
+	ServiceName string `json:"serviceName,omitempty" protobuf:"bytes,1,opt,name=serviceName"`
 
 	// Specifies the port of the referenced service.
-	ServicePort intstr.IntOrString `json:"servicePort" protobuf:"bytes,2,opt,name=servicePort"`
+	// +optional
+	ServicePort intstr.IntOrString `json:"servicePort,omitempty" protobuf:"bytes,2,opt,name=servicePort"`
+
+	// Resource is an ObjectRef to another Kubernetes resource in the namespace
+	// of the Ingress object. If resource is specified, serviceName and servicePort
+	// must not be specified.
+	// +optional
+	Resource *v1.TypedLocalObjectReference `json:"resource,omitempty" protobuf:"bytes,3,opt,name=resource"`
 }
 
 // +genclient

staging/src/k8s.io/api/networking/v1beta1/types_swagger_doc_generated.go

@@ -62,6 +62,7 @@ var map_IngressBackend = map[string]string{
 	"":            "IngressBackend describes all endpoints for a given service and port.",
 	"serviceName": "Specifies the name of the referenced service.",
 	"servicePort": "Specifies the port of the referenced service.",
+	"resource":    "Resource is an ObjectRef to another Kubernetes resource in the namespace of the Ingress object. If resource is specified, serviceName and servicePort must not be specified.",
 }
 
 func (IngressBackend) SwaggerDoc() map[string]string {

staging/src/k8s.io/api/networking/v1beta1/zz_generated.deepcopy.go

@@ -33,7 +33,7 @@ func (in *HTTPIngressPath) DeepCopyInto(out *HTTPIngressPath) {
 		*out = new(PathType)
 		**out = **in
 	}
-	out.Backend = in.Backend
+	in.Backend.DeepCopyInto(&out.Backend)
 	return
 }
 
@@ -102,6 +102,11 @@ func (in *Ingress) DeepCopyObject() runtime.Object {
 func (in *IngressBackend) DeepCopyInto(out *IngressBackend) {
 	*out = *in
 	out.ServicePort = in.ServicePort
+	if in.Resource != nil {
+		in, out := &in.Resource, &out.Resource
+		*out = new(v1.TypedLocalObjectReference)
+		(*in).DeepCopyInto(*out)
+	}
 	return
 }
 
@@ -278,7 +283,7 @@ func (in *IngressSpec) DeepCopyInto(out *IngressSpec) {
 	if in.Backend != nil {
 		in, out := &in.Backend, &out.Backend
 		*out = new(IngressBackend)
-		**out = **in
+		(*in).DeepCopyInto(*out)
 	}
 	if in.TLS != nil {
 		in, out := &in.TLS, &out.TLS

staging/src/k8s.io/api/testdata/HEAD/extensions.v1beta1.Ingress.json

@@ -44,27 +44,37 @@
     "ingressClassName": "19",
     "backend": {
       "serviceName": "20",
-      "servicePort": "21"
+      "servicePort": "21",
+      "resource": {
+        "apiGroup": "22",
+        "kind": "23",
+        "name": "24"
+      }
     },
     "tls": [
       {
         "hosts": [
-          "22"
+          "25"
         ],
-        "secretName": "23"
+        "secretName": "26"
       }
     ],
     "rules": [
       {
-        "host": "24",
+        "host": "27",
         "http": {
           "paths": [
             {
-              "path": "25",
+              "path": "28",
-              "pathType": "",
+              "pathType": ")晿\u003co,c鮽ort昍řČ",
               "backend": {
-                "serviceName": "26",
+                "serviceName": "29",
-                "servicePort": -783752440
+                "servicePort": 1973774989,
+                "resource": {
+                  "apiGroup": "30",
+                  "kind": "31",
+                  "name": "32"
+                }
               }
             }
           ]
@@ -76,8 +86,8 @@
     "loadBalancer": {
       "ingress": [
         {
-          "ip": "27",
+          "ip": "33",
-          "hostname": "28"
+          "hostname": "34"
         }
       ]
     }

staging/src/k8s.io/api/testdata/HEAD/extensions.v1beta1.Ingress.yaml

@@ -31,24 +31,32 @@ metadata:
   uid: "7"
 spec:
   backend:
+    resource:
+      apiGroup: "22"
+      kind: "23"
+      name: "24"
     serviceName: "20"
     servicePort: "21"
   ingressClassName: "19"
   rules:
-  - host: "24"
+  - host: "27"
     http:
       paths:
       - backend:
-          serviceName: "26"
+          resource:
-          servicePort: -783752440
+            apiGroup: "30"
-        path: "25"
+            kind: "31"
-        pathType: ""
+            name: "32"
+          serviceName: "29"
+          servicePort: 1973774989
+        path: "28"
+        pathType: )晿<o,c鮽ort昍řČ
   tls:
   - hosts:
-    - "22"
+    - "25"
-    secretName: "23"
+    secretName: "26"
 status:
   loadBalancer:
     ingress:
-    - hostname: "28"
+    - hostname: "34"
-      ip: "27"
+      ip: "33"

staging/src/k8s.io/api/testdata/HEAD/networking.k8s.io.v1beta1.Ingress.json

@@ -44,27 +44,37 @@
     "ingressClassName": "19",
     "backend": {
       "serviceName": "20",
-      "servicePort": "21"
+      "servicePort": "21",
+      "resource": {
+        "apiGroup": "22",
+        "kind": "23",
+        "name": "24"
+      }
     },
     "tls": [
       {
         "hosts": [
-          "22"
+          "25"
         ],
-        "secretName": "23"
+        "secretName": "26"
       }
     ],
     "rules": [
       {
-        "host": "24",
+        "host": "27",
         "http": {
           "paths": [
             {
-              "path": "25",
+              "path": "28",
-              "pathType": "",
+              "pathType": ")晿\u003co,c鮽ort昍řČ",
               "backend": {
-                "serviceName": "26",
+                "serviceName": "29",
-                "servicePort": -783752440
+                "servicePort": 1973774989,
+                "resource": {
+                  "apiGroup": "30",
+                  "kind": "31",
+                  "name": "32"
+                }
               }
             }
           ]
@@ -76,8 +86,8 @@
     "loadBalancer": {
       "ingress": [
         {
-          "ip": "27",
+          "ip": "33",
-          "hostname": "28"
+          "hostname": "34"
         }
       ]
     }

staging/src/k8s.io/api/testdata/HEAD/networking.k8s.io.v1beta1.Ingress.yaml

@@ -31,24 +31,32 @@ metadata:
   uid: "7"
 spec:
   backend:
+    resource:
+      apiGroup: "22"
+      kind: "23"
+      name: "24"
     serviceName: "20"
     servicePort: "21"
   ingressClassName: "19"
   rules:
-  - host: "24"
+  - host: "27"
     http:
       paths:
       - backend:
-          serviceName: "26"
+          resource:
-          servicePort: -783752440
+            apiGroup: "30"
-        path: "25"
+            kind: "31"
-        pathType: ""
+            name: "32"
+          serviceName: "29"
+          servicePort: 1973774989
+        path: "28"
+        pathType: )晿<o,c鮽ort昍řČ
   tls:
   - hosts:
-    - "22"
+    - "25"
-    secretName: "23"
+    secretName: "26"
 status:
   loadBalancer:
     ingress:
-    - hostname: "28"
+    - hostname: "34"
-      ip: "27"
+      ip: "33"