update validation rules for controllerRef

config/crd/bases/configuration.konghq.com_konglicenses.yaml

@@ -32,8 +32,10 @@ spec:
               More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources
             type: string
           enabled:
-            description: Enabled is set to true to let controllers (like KIC) to reconcile
-              it.
+            default: true
+            description: |-
+              Enabled is set to true to let controllers (like KIC) to reconcile it.
+              Default value is true to apply the license by default.
             type: boolean
           kind:
             description: |-
@@ -155,17 +157,27 @@ spec:
                           description: |-
                             Group is the group of referent.
                             It should be empty if the referent is in "core" group (like pod.)
+                          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 is the kind of the referent.
+                          maxLength: 63
+                          minLength: 1
+                          pattern: ^[a-zA-Z]([-a-zA-Z0-9]*[a-zA-Z0-9])?$
                           type: string
                         name:
                           description: Name is the name of the referent.
+                          maxLength: 253
+                          minLength: 1
                           type: string
                         namespace:
                           description: |-
                             Namespace is the namespace of the referent.
                             It should be empty if the referent is cluster scoped.
+                          maxLength: 63
+                          minLength: 1
+                          pattern: ^[a-z0-9]([-a-z0-9]*[a-z0-9])?$
                           type: string
                       required:
                       - name

pkg/apis/configuration/v1alpha1/kong_license_types.go

@@ -18,6 +18,8 @@ type KongLicense struct {
 	// RawLicenseString is the raw content of the license in string format.
 	RawLicenseString string `json:"rawLicenseString"`
 	// Enabled is set to true to let controllers (like KIC) to reconcile it.
+	// Default value is true to apply the license by default.
+	// +kubebuilder:default=true
 	Enabled bool `json:"enabled"`
 	// Status is the status of the KongLicense being processed by controllers.
 	Status KongLicenseStatus `json:"status,omitempty"`
@@ -52,15 +54,28 @@ type KongLicenseControllerStatus struct {
 
 // Group refers to a Kubernetes Group. It must either be an empty string or a
 // RFC 1123 subdomain.
+// +kubebuilder:validation:MaxLength=253
+// +kubebuilder:validation:Pattern=`^$|^[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*$`
 type Group string
 
 // Kind refers to a kubernetes kind.
+// +kubebuilder:validation:MinLength=1
+// +kubebuilder:validation:MaxLength=63
+// +kubebuilder:validation:Pattern=`^[a-zA-Z]([-a-zA-Z0-9]*[a-zA-Z0-9])?$`
 type Kind string
 
-// Namespace refers to a Kubernetes namespace.
+// Namespace refers to a Kubernetes namespace. It must be a RFC 1123 label.
+// +kubebuilder:validation:Pattern=`^[a-z0-9]([-a-z0-9]*[a-z0-9])?$`
+// +kubebuilder:validation:MinLength=1
+// +kubebuilder:validation:MaxLength=63
 type Namespace string
 
 // ObjectName refers to the name of a Kubernetes object.
+// Object names can have a variety of forms, including RFC1123 subdomains,
+// RFC 1123 labels, or RFC 1035 labels.
+//
+// +kubebuilder:validation:MinLength=1
+// +kubebuilder:validation:MaxLength=253
 type ObjectName string
 
 type ControllerReference struct {