feat(capkk): add status to support autoscaling from zero operations

api/v1beta1/kkmachinetemplate_types.go

@@ -17,10 +17,20 @@ limitations under the License.
 package v1beta1
 
 import (
+	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	clusterv1 "sigs.k8s.io/cluster-api/api/v1beta1"
 )
 
+// KKMachineTemplateStatus defines a status for an KKMachineTemplate.
+type KKMachineTemplateStatus struct {
+	// Capacity defines the resource capacity for this machine.
+	// This value is used for autoscaling from zero operations as defined in:
+	// https://github.com/kubernetes-sigs/cluster-api/blob/main/docs/proposals/20210310-opt-in-autoscaling-from-zero.md
+	// +optional
+	Capacity corev1.ResourceList `json:"capacity,omitempty"`
+}
+
 // KKMachineTemplateSpec defines the desired state of KKMachineTemplate
 type KKMachineTemplateSpec struct {
 	Template KKMachineTemplateResource `json:"template"`
@@ -37,15 +47,19 @@ type KKMachineTemplateResource struct {
 	Spec KKMachineSpec `json:"spec"`
 }
 
-//+kubebuilder:object:root=true
-//+kubebuilder:subresource:status
+// +kubebuilder:object:root=true
+// +kubebuilder:resource:path=kkmachinetemplates,scope=Namespaced,categories=cluster-api,shortName=kkmt
+// +kubebuilder:storageversion
+// +kubebuilder:printcolumn:name="Age",type="date",JSONPath=".metadata.creationTimestamp",description="Time duration since creation of KKMachineTemplate"
+// +k8s:defaulter-gen=true
 
 // KKMachineTemplate is the Schema for the kkmachinetemplates API
 type KKMachineTemplate struct {
 	metav1.TypeMeta   `json:",inline"`
 	metav1.ObjectMeta `json:"metadata,omitempty"`
 
-	Spec KKMachineTemplateSpec `json:"spec,omitempty"`
+	Spec   KKMachineTemplateSpec   `json:"spec,omitempty"`
+	Status KKMachineTemplateStatus `json:"status,omitempty"`
 }
 
 //+kubebuilder:object:root=true

config/crd/bases/infrastructure.cluster.x-k8s.io_kkmachinetemplates.yaml

@@ -9,13 +9,22 @@ metadata:
 spec:
   group: infrastructure.cluster.x-k8s.io
   names:
+    categories:
+    - cluster-api
     kind: KKMachineTemplate
     listKind: KKMachineTemplateList
     plural: kkmachinetemplates
+    shortNames:
+    - kkmt
     singular: kkmachinetemplate
   scope: Namespaced
   versions:
-  - name: v1beta1
+  - additionalPrinterColumns:
+    - description: Time duration since creation of KKMachineTemplate
+      jsonPath: .metadata.creationTimestamp
+      name: Age
+      type: date
+    name: v1beta1
     schema:
       openAPIV3Schema:
         description: KKMachineTemplate is the Schema for the kkmachinetemplates API
@@ -129,8 +138,22 @@ spec:
             required:
             - template
             type: object
+          status:
+            description: KKMachineTemplateStatus defines a status for an KKMachineTemplate.
+            properties:
+              capacity:
+                additionalProperties:
+                  anyOf:
+                  - type: integer
+                  - type: string
+                  pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
+                  x-kubernetes-int-or-string: true
+                description: 'Capacity defines the resource capacity for this machine.
+                  This value is used for autoscaling from zero operations as defined
+                  in: https://github.com/kubernetes-sigs/cluster-api/blob/main/docs/proposals/20210310-opt-in-autoscaling-from-zero.md'
+                type: object
+            type: object
         type: object
     served: true
     storage: true
-    subresources:
-      status: {}
+    subresources: {}