feat: add kustomize file for crd sample

pkg/plugins/common/kustomize/v2-alpha/scaffolds/api.go

@@ -18,6 +18,7 @@ package scaffolds
 
 import (
 	"fmt"
+	"strings"
 
 	"sigs.k8s.io/kubebuilder/v3/pkg/config"
 	"sigs.k8s.io/kubebuilder/v3/pkg/machinery"
@@ -68,10 +69,23 @@ func (s *apiScaffolder) Scaffold() error {
 		machinery.WithResource(&s.resource),
 	)
 
+	rs, err := s.config.GetResources()
+	if err != nil {
+		return err
+	}
+
+	crdManifests := []string{}
+	for _, r := range rs {
+		crdManifests = append(crdManifests, s.generateManifestsPath(r))
+	}
+
+	crdManifests = append(crdManifests, s.generateManifestsPath(s.resource))
+
 	// Keep track of these values before the update
 	if s.resource.HasAPI() {
 		if err := scaffold.Execute(
 			&samples.CRDSample{Force: s.force},
+			&samples.Kustomization{CRDManifests: crdManifests},
 			&rbac.CRDEditorRole{},
 			&rbac.CRDViewerRole{},
 			&patches.EnableWebhookPatch{},
@@ -85,3 +99,8 @@ func (s *apiScaffolder) Scaffold() error {
 
 	return nil
 }
+
+func (s *apiScaffolder) generateManifestsPath(r resource.Resource) string {
+	// nolint: lll
+	return strings.ToLower(r.GVK.Group) + "_" + strings.ToLower(r.GVK.Version) + "_" + strings.ToLower(r.GVK.Kind) + ".yaml"
+}

pkg/plugins/common/kustomize/v2-alpha/scaffolds/internal/templates/config/samples/kustomization.go

@@ -0,0 +1,70 @@
+/*
+Copyright 2022 The Kubernetes 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
+
+    http://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.
+*/
+
+package samples
+
+import (
+	"bytes"
+	"fmt"
+	"path/filepath"
+	"text/template"
+
+	"sigs.k8s.io/kubebuilder/v3/pkg/machinery"
+)
+
+var _ machinery.Template = &Kustomization{}
+
+// Kustomization scaffolds a file that defines the kustomization scheme for the prometheus folder
+type Kustomization struct {
+	machinery.TemplateMixin
+
+	CRDManifests []string
+}
+
+// SetTemplateDefaults implements file.Template
+func (f *Kustomization) SetTemplateDefaults() error {
+	if f.Path == "" {
+		f.Path = filepath.Join("config", "samples", "kustomization.yaml")
+	}
+
+	defaultTemplate, err := f.createTemplate()
+	if err != nil {
+		return err
+	}
+
+	f.TemplateBody = defaultTemplate
+
+	f.IfExistsAction = machinery.OverwriteFile
+
+	return nil
+}
+
+func (f *Kustomization) createTemplate() (string, error) {
+	t := template.Must(template.New("customResourcesConfig").Parse(kustomizationTemplate))
+
+	outputTmpl := &bytes.Buffer{}
+	if err := t.Execute(outputTmpl, f.CRDManifests); err != nil {
+		return "", fmt.Errorf("error when generating sample kustomization manifest: %w", err)
+	}
+
+	return outputTmpl.String(), nil
+
+}
+
+const kustomizationTemplate = `---
+resources:{{ range $i ,$e := . }}
+  - {{ . }}{{end}}
+`

testdata/project-v4-addon-and-grafana/config/samples/kustomization.yaml

@@ -0,0 +1,5 @@
+---
+resources:
+  - crew_v1_captain.yaml
+  - crew_v1_firstmate.yaml
+  - crew_v1_admiral.yaml

testdata/project-v4-config/config/samples/kustomization.yaml

@@ -0,0 +1,5 @@
+---
+resources:
+  - crew_v1_captain.yaml
+  - crew_v1_firstmate.yaml
+  - crew_v1_admiral.yaml

testdata/project-v4-multigroup/config/samples/kustomization.yaml

@@ -0,0 +1,13 @@
+---
+resources:
+  - crew_v1_captain.yaml
+  - ship_v1beta1_frigate.yaml
+  - ship_v1_destroyer.yaml
+  - ship_v2alpha1_cruiser.yaml
+  - sea-creatures_v1beta1_kraken.yaml
+  - sea-creatures_v1beta2_leviathan.yaml
+  - foo.policy_v1_healthcheckpolicy.yaml
+  - apps_v1_deployment.yaml
+  - foo_v1_bar.yaml
+  - fiz_v1_bar.yaml
+  - _v1_lakers.yaml

testdata/project-v4/config/samples/kustomization.yaml

@@ -0,0 +1,5 @@
+---
+resources:
+  - crew_v1_captain.yaml
+  - crew_v1_firstmate.yaml
+  - crew_v1_admiral.yaml