migrate CRD generation to controller-gen

Signed-off-by: kahirokunn <okinakahiro@gmail.com>

Author: kahirokunn

config/crd/bases/operator.knative.dev_knativeeventings.yaml

@@ -15,6 +15,9 @@
 # This kustomization.yaml is not intended to be run by itself,
 # since it depends on service name and namespace that are out of this kustomize package.
 # It should be run by config/default
+commonLabels:
+  app.kubernetes.io/version: devel
+  app.kubernetes.io/name: knative-operator
 resources:
 - bases/operator.knative.dev_knativeservings.yaml
 - bases/operator.knative.dev_knativeeventings.yaml

config/crd/bases/operator.knative.dev_knativeservings.yaml

@@ -0,0 +1,14 @@
+# Copyright 2025 The Knative Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+

config/crd/kustomization.yaml

@@ -53,6 +53,19 @@ kube::codegen::gen_helpers \
   --boilerplate "${REPO_ROOT_DIR}/hack/boilerplate/boilerplate.go.txt" \
   "${REPO_ROOT_DIR}/pkg/apis"
 
+group "CRD Gen"
+
+# Install controller-gen if not already available
+GOFLAGS=-mod=mod go install sigs.k8s.io/controller-tools/cmd/controller-gen@v0.20.1
+export PATH="$(go env GOPATH)/bin:$PATH"
+
+# Generate CRD manifests from Go types using controller-gen.
+# This ensures CRD schemas stay in sync with the API type definitions.
+GOFLAGS=-mod=mod controller-gen \
+  crd:allowDangerousTypes=true,ignoreUnexportedFields=true,headerFile="${REPO_ROOT_DIR}/hack/boilerplate/boilerplate.yaml.txt" \
+  paths="${REPO_ROOT_DIR}/pkg/apis/..." \
+  output:crd:dir="${REPO_ROOT_DIR}/config/crd/bases"
+
 group "Update deps post-codegen"
 
 # Make sure our dependencies are up-to-date

hack/boilerplate/boilerplate.yaml.txt

@@ -348,7 +348,7 @@ type PodDisruptionBudgetOverride struct {
 	// Name is the name of the podDisruptionBudget to override.
 	Name string `json:"name"`
 	// The desired PodDisruptionBudgetSpec
-	policyv1.PodDisruptionBudgetSpec
+	policyv1.PodDisruptionBudgetSpec `json:",inline"`
 }
 
 // ResourceRequirementsOverride enables the user to override any container's
@@ -357,7 +357,7 @@ type ResourceRequirementsOverride struct {
 	// The container name
 	Container string `json:"container"`
 	// The desired ResourceRequirements
-	corev1.ResourceRequirements
+	corev1.ResourceRequirements `json:",inline"`
 }
 
 // EnvRequirementsOverride enables the user to override any container's env vars.

hack/update-codegen.sh

@@ -31,6 +31,8 @@ var (
 // +genclient
 // +genreconciler:krshapedlogic=false
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+// +kubebuilder:object:root=true
+// +kubebuilder:subresource:status
 type KnativeEventing struct {
 	metav1.TypeMeta   `json:",inline"`
 	metav1.ObjectMeta `json:"metadata,omitempty"`
@@ -89,6 +91,7 @@ type KnativeEventingStatus struct {
 
 // KnativeEventingList contains a list of KnativeEventing
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+// +kubebuilder:object:root=true
 type KnativeEventingList struct {
 	metav1.TypeMeta `json:",inline"`
 	metav1.ListMeta `json:"metadata,omitempty"`

pkg/apis/operator/base/common.go

@@ -31,6 +31,8 @@ var (
 // +genclient
 // +genreconciler:krshapedlogic=false
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+// +kubebuilder:object:root=true
+// +kubebuilder:subresource:status
 type KnativeServing struct {
 	metav1.TypeMeta   `json:",inline"`
 	metav1.ObjectMeta `json:"metadata,omitempty"`
@@ -78,6 +80,7 @@ type KnativeServingStatus struct {
 
 // KnativeServingList contains a list of KnativeServing
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+// +kubebuilder:object:root=true
 type KnativeServingList struct {
 	metav1.TypeMeta `json:",inline"`
 	metav1.ListMeta `json:"metadata,omitempty"`