Fix: don't use corev1.objectReference

api/v1alpha2/inferencepool_types.go

@@ -17,7 +17,6 @@ limitations under the License.
 package v1alpha2
 
 import (
-	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
@@ -182,7 +181,7 @@ type InferencePoolStatus struct {
 // PoolStatus defines the observed state of InferencePool from a Gateway.
 type PoolStatus struct {
 	// GatewayRef indicates the gateway that observed state of InferencePool.
-	GatewayRef corev1.ObjectReference `json:"parentRef"`
+	GatewayRef ParentGatewayReference `json:"parentRef"`
 
 	// Conditions track the state of the InferencePool.
 	//
@@ -270,3 +269,29 @@ const (
 	// or API group, or a reference to a resource that can not be found.
 	InferencePoolReasonInvalidExtensionRef InferencePoolReason = "InvalidExtensionRef"
 )
+
+// ParentGatewayReference identifies an API object including its namespace,
+// defaulting to Gateway.
+type ParentGatewayReference struct {
+	// Group is the group of the referent.
+	//
+	// +optional
+	// +kubebuilder:default="gateway.networking.k8s.io"
+	Group *Group `json:"group"`
+
+	// Kind is kind of the referent. For example "Gateway".
+	//
+	// +optional
+	// +kubebuilder:default=Gateway
+	Kind *Kind `json:"kind"`
+
+	// Name is the name of the referent.
+	Name ObjectName `json:"name"`
+
+	// Namespace is the namespace of the referent.  If not present,
+	// the namespace of the referent is assumed to be the same as
+	// the namespace of the referring object.
+	//
+	// +optional
+	Namespace *Namespace `json:"namespace,omitempty"`
+}

api/v1alpha2/shared_types.go

@@ -106,3 +106,24 @@ type LabelKey string
 // +kubebuilder:validation:MaxLength=63
 // +kubebuilder:validation:Pattern=`^(([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9])?$`
 type LabelValue string
+
+// Namespace refers to a Kubernetes namespace. It must be a RFC 1123 label.
+//
+// This validation is based off of the corresponding Kubernetes validation:
+// https://github.com/kubernetes/apimachinery/blob/02cfb53916346d085a6c6c7c66f882e3c6b0eca6/pkg/util/validation/validation.go#L187
+//
+// This is used for Namespace name validation here:
+// https://github.com/kubernetes/apimachinery/blob/02cfb53916346d085a6c6c7c66f882e3c6b0eca6/pkg/api/validation/generic.go#L63
+//
+// Valid values include:
+//
+// * "example"
+//
+// Invalid values include:
+//
+// * "example.com" - "." is an invalid character
+//
+// +kubebuilder:validation:Pattern=`^[a-z0-9]([-a-z0-9]*[a-z0-9])?$`
+// +kubebuilder:validation:MinLength=1
+// +kubebuilder:validation:MaxLength=63
+type Namespace string

config/crd/bases/inference.networking.x-k8s.io_inferencepools.yaml

@@ -242,46 +242,36 @@ spec:
                       description: GatewayRef indicates the gateway that observed
                         state of InferencePool.
                       properties:
-                        apiVersion:
-                          description: API version of the referent.
-                          type: string
-                        fieldPath:
-                          description: |-
-                            If referring to a piece of an object instead of an entire object, this string
-                            should contain a valid JSON/Go field access statement, such as desiredState.manifest.containers[2].
-                            For example, if the object reference is to a container within a pod, this would take on a value like:
-                            "spec.containers{name}" (where "name" refers to the name of the container that triggered
-                            the event) or if no container name is specified "spec.containers[2]" (container with
-                            index 2 in this pod). This syntax is chosen only to have some well-defined way of
-                            referencing a part of an object.
+                        group:
+                          default: gateway.networking.k8s.io
+                          description: Group is the group of the referent.
+                          maxLength: 253
+                          pattern: ^$|^[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*$
                           type: string
                         kind:
-                          description: |-
-                            Kind of the referent.
-                            More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
+                          default: Gateway
+                          description: Kind is kind of the referent. For example "Gateway".
+                          maxLength: 63
+                          minLength: 1
+                          pattern: ^[a-zA-Z]([-a-zA-Z0-9]*[a-zA-Z0-9])?$
                           type: string
                         name:
-                          description: |-
-                            Name of the referent.
-                            More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names
+                          description: Name is the name of the referent.
+                          maxLength: 253
+                          minLength: 1
                           type: string
                         namespace:
                           description: |-
-                            Namespace of the referent.
-                            More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/namespaces/
-                          type: string
-                        resourceVersion:
-                          description: |-
-                            Specific resourceVersion to which this reference is made, if any.
-                            More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#concurrency-control-and-consistency
-                          type: string
-                        uid:
-                          description: |-
-                            UID of the referent.
-                            More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#uids
+                            Namespace is the namespace of the referent.  If not present,
+                            the namespace of the referent is assumed to be the same as
+                            the namespace of the referring object.
+                          maxLength: 63
+                          minLength: 1
+                          pattern: ^[a-z0-9]([-a-z0-9]*[a-z0-9])?$
                           type: string
+                      required:
+                      - name
                       type: object
-                      x-kubernetes-map-type: atomic
                   required:
                   - parentRef
                   type: object

conformance/utils/kubernetes/helpers.go

@@ -127,7 +127,8 @@ func InferencePoolMustHaveCondition(t *testing.T, c client.Reader, poolNN types.
 				debugMsg += " (No parent statuses reported)"
 			}
 			for i, parentStatus := range lastObservedPool.Status.Parents {
-				debugMsg += fmt.Sprintf("\n  Parent %d (Gateway: %s/%s):", i, parentStatus.GatewayRef.Namespace, parentStatus.GatewayRef.Name)
+				namespace := parentStatus.GatewayRef.Namespace
+				debugMsg += fmt.Sprintf("\n  Parent %d (Gateway: %s/%s):", i, *namespace, parentStatus.GatewayRef.Name)
 				if len(parentStatus.Conditions) == 0 {
 					debugMsg += " (No conditions reported for this parent)"
 				}