Add new Golang base for go/v4-alpha with changes requested by the com…

…munity in the layout

- Add a new golang language base plugin (base.go/v4)
- Change the go/v4-alpha plugin to use the new base
- Address the layout changes requirements for go/v4. Now, the api and controllers are under the pkg dir.
- Change the Makefile to install kustomize with go install
- Remove crdVersion and webhook versions that is not supported and should no longer be served.

Closes: #932
Closes: #2531
Closes: #2822

cmd/main.go

@@ -34,6 +34,7 @@ import (
 	deployimagev1alpha1 "sigs.k8s.io/kubebuilder/v3/pkg/plugins/golang/deploy-image/v1alpha1"
 	golangv2 "sigs.k8s.io/kubebuilder/v3/pkg/plugins/golang/v2"
 	golangv3 "sigs.k8s.io/kubebuilder/v3/pkg/plugins/golang/v3"
+	golangv4 "sigs.k8s.io/kubebuilder/v3/pkg/plugins/golang/v4"
 	grafanav1alpha1 "sigs.k8s.io/kubebuilder/v3/pkg/plugins/optional/grafana/v1alpha"
 )
 
@@ -47,7 +48,7 @@ func main() {
 	// Bundle plugin which built the golang projects scaffold by Kubebuilder go/v3 with kustomize alpha-v2
 	gov4Bundle, _ := plugin.NewBundle(golang.DefaultNameQualifier, plugin.Version{Number: 4, Stage: stage.Alpha},
 		kustomizecommonv2alpha.Plugin{},
-		golangv3.Plugin{},
+		golangv4.Plugin{},
 	)
 
 	fs := machinery.Filesystem{
@@ -64,6 +65,7 @@ func main() {
 		cli.WithPlugins(
 			golangv2.Plugin{},
 			golangv3.Plugin{},
+			golangv4.Plugin{},
 			gov3Bundle,
 			gov4Bundle,
 			&kustomizecommonv1.Plugin{},

docs/book/src/plugins/available-plugins.md

@@ -2,17 +2,18 @@
 
 This section describes the plugins supported and shipped in with the Kubebuilder project.
 
-| Plugin                                                                             | Key                  | Description                                                                                                                                                                                                                                  |
-| ---------------------------------------------------------------------------------- | -------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| [go.kubebuilder.io/v2 - (Deprecated)](go-v2-plugin.md)                             | `go/v2`              | Golang plugin responsible for scaffolding the legacy layout provided with Kubebuilder CLI >= `2.0.0` and < `3.0.0`.                                                                                                                          |
-| [go.kubebuilder.io/v3 - (Default scaffold with Kubebuilder init)](go-v3-plugin.md) | `go/v3`              | Default scaffold used for creating a project when no plugin(s) are provided. Responsible for scaffolding Golang projects and its configurations.                                                                                             |
-| [go.kubebuilder.io/v4-alpha - (Add Apple Sillicom Support)](go-v4-plugin.md)       | `go/v4`              | Scaffold composite by `base.go.kubebuilder.io/v3` and [kustomize.common.kubebuilder.io/v2-alpha](kustomize-v2-alpha.md). Responsible for scaffolding Golang projects and its configurations.                                                                                             |
-| [declarative.go.kubebuilder.io/v1](declarative-v1.md)                              | `declarative/v1`     | Optional plugin used to scaffold APIs/controllers using the [kubebuilder-declarative-pattern][kubebuilder-declarative-pattern] project.                                                                                                      |
-| [kustomize.common.kubebuilder.io/v1](kustomize-v1.md)                              | `kustomize/v1`       | Responsible for scaffold all manifests to configure the projects with [kustomize(v3)][kustomize]. (create and update the `config/` directory). This plugin is used in the composition to create the plugin (`go/v3`).                    |
-| [kustomize.common.kubebuilder.io/v2-alpha](kustomize-v2-alpha.md)                  | `kustomize/v2-alpha` | It has the same purpose of `kustomize/v1`. However, it works with [kustomize][kustomize] version `v4` and addresses the required changes for future kustomize configurations. It will probably be used with the future `go/v4-alpha` plugin. |
-| `base.go.kubebuilder.io/v3`                                                        | `base/v3`            | Responsible for scaffold all files which specific requires Golang. This plugin is used in the composition to create the plugin (`go/v3`)                                                                                                     |
-| [grafana.kubebuilder.io/v1-alpha](grafana-v1-alpha.md)                             | `grafana/v1-alpha`   | Optional helper plugin which can be used to scaffold Grafana Manifests Dashboards for the default metrics which are exported by controller-runtime.                                                                                                 |
-| [deploy-image.go.kubebuilder.io/v1-alpha](deploy-image-plugin-v1-alpha)            | `deploy-image/v1-alpha`   | Optional helper plugin which can be used to scaffold APIs and controller with code implementation to Deploy and Manage an Operand(image).                                                                                                 |
+| Plugin                                                                             | Key                     | Description                                                                                                                                                                                                                                  |
+|------------------------------------------------------------------------------------|-------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [go.kubebuilder.io/v2 - (Deprecated)](go-v2-plugin.md)                             | `go/v2`                 | Golang plugin responsible for scaffolding the legacy layout provided with Kubebuilder CLI >= `2.0.0` and < `3.0.0`.                                                                                                                          |
+| [go.kubebuilder.io/v3 - (Default scaffold with Kubebuilder init)](go-v3-plugin.md) | `go/v3`                 | Default scaffold used for creating a project when no plugin(s) are provided. Responsible for scaffolding Golang projects and its configurations.                                                                                             |
+| [go.kubebuilder.io/v4-alpha - (Add Apple Sillicom Support)](go-v4-plugin.md)       | `go/v4`                 | Scaffold composite by `base.go.kubebuilder.io/v3` and [kustomize.common.kubebuilder.io/v2-alpha](kustomize-v2-alpha.md). Responsible for scaffolding Golang projects and its configurations.                                                 |
+| [declarative.go.kubebuilder.io/v1](declarative-v1.md)                              | `declarative/v1`        | Optional plugin used to scaffold APIs/controllers using the [kubebuilder-declarative-pattern][kubebuilder-declarative-pattern] project.                                                                                                      |
+| [kustomize.common.kubebuilder.io/v1](kustomize-v1.md)                              | `kustomize/v1`          | Responsible for scaffold all manifests to configure the projects with [kustomize(v3)][kustomize]. (create and update the `config/` directory). This plugin is used in the composition to create the plugin (`go/v3`).                        |
+| [kustomize.common.kubebuilder.io/v2-alpha](kustomize-v2-alpha.md)                  | `kustomize/v2-alpha`    | It has the same purpose of `kustomize/v1`. However, it works with [kustomize][kustomize] version `v4` and addresses the required changes for future kustomize configurations. It will probably be used with the future `go/v4-alpha` plugin. |
+| `base.go.kubebuilder.io/v3`                                                        | `base/v3`               | Responsible for scaffold all files which specific requires Golang. This plugin is used in the composition to create the plugin (`go/v3`)                                                                                                     |
+| `base.go.kubebuilder.io/v4`                                                        | `base/v4`               | Responsible for scaffold all files which specific requires Golang. This plugin is used in the composition to create the plugin (`go/v4`)                                                                                                     |
+| [grafana.kubebuilder.io/v1-alpha](grafana-v1-alpha.md)                             | `grafana/v1-alpha`      | Optional helper plugin which can be used to scaffold Grafana Manifests Dashboards for the default metrics which are exported by controller-runtime.                                                                                          |
+| [deploy-image.go.kubebuilder.io/v1-alpha](deploy-image-plugin-v1-alpha)            | `deploy-image/v1-alpha` | Optional helper plugin which can be used to scaffold APIs and controller with code implementation to Deploy and Manage an Operand(image).                                                                                                    |
 
 > Note: **ALPHA** plugins can introduce breaking changes. For further info see [Plugins Versioning](./plugins/plugins-versioning.md).
 

docs/book/src/plugins/go-v4-plugin.md

@@ -1,7 +1,7 @@
 # go/v4-alpha (go.kubebuilder.io/v4-alpha)
 
 Kubebuilder will scaffold using the go/v4-alpha plugin only if specified when initializing the project. 
-This plugin is a composition of the plugins ` kustomize.common.kubebuilder.io/v2-alpha` and `base.go.kubebuilder.io/v3`. 
+This plugin is a composition of the plugins ` kustomize.common.kubebuilder.io/v2-alpha` and `base.go.kubebuilder.io/v4`. 
 It scaffolds a project template that helps in constructing sets of [controllers][controller-runtime]. 
 
 It scaffolds boilerplate code to create and design controllers. 
@@ -21,6 +21,7 @@ under the [testdata][testdata] directory on the root directory of the Kubebuilde
 - If you are looking to experiment with the future default scaffold that will be provided by Kubebuilder CLI
 - If your local environment is Apple Silicon (`darwin/arm64`)
 - If you are looking to use [kubernetes-sigs/kustomize][kustomize] v4
+- If you are looking for the new default layout where the "apis" and "controllers" are scaffold under the `pkg/` dir.
 
 ## How to use it ?
 

pkg/model/resource/utils.go

@@ -50,6 +50,17 @@ func safeImport(unsafe string) string {
 
 // APIPackagePath returns the default path
 func APIPackagePath(repo, group, version string, multiGroup bool) string {
+	if multiGroup {
+		if group != "" {
+			return path.Join(repo, "pkg", "apis", group, version)
+		}
+		return path.Join(repo, "pkg", "apis", version)
+	}
+	return path.Join(repo, "pkg", "api", version)
+}
+
+// APIPackagePathLegacy returns the default path
+func APIPackagePathLegacy(repo, group, version string, multiGroup bool) string {
 	if multiGroup {
 		if group != "" {
 			return path.Join(repo, "apis", group, version)

pkg/model/resource/utils_test.go

@@ -44,9 +44,9 @@ var _ = Describe("APIPackagePath", func() {
 		func(repo, group, version string, multiGroup bool, p string) {
 			Expect(APIPackagePath(repo, group, version, multiGroup)).To(Equal(p))
 		},
-		Entry("single group setup", repo, group, version, false, path.Join(repo, "api", version)),
-		Entry("multiple group setup", repo, group, version, true, path.Join(repo, "apis", group, version)),
-		Entry("multiple group setup with empty group", repo, "", version, true, path.Join(repo, "apis", version)),
+		Entry("single group setup", repo, group, version, false, path.Join(repo, "pkg", "api", version)),
+		Entry("multiple group setup", repo, group, version, true, path.Join(repo, "pkg", "apis", group, version)),
+		Entry("multiple group setup with empty group", repo, "", version, true, path.Join(repo, "pkg", "apis", version)),
 	)
 })
 

pkg/plugin/util/helpers.go

@@ -20,16 +20,19 @@ import (
 	"sigs.k8s.io/kubebuilder/v3/pkg/config"
 )
 
+// Deprecated: go/v4 no longer supports v1beta1 option
 // HasDifferentCRDVersion returns true if any other CRD version is tracked in the project configuration.
 func HasDifferentCRDVersion(config config.Config, crdVersion string) bool {
 	return hasDifferentAPIVersion(config.ListCRDVersions(), crdVersion)
 }
 
+// Deprecated: go/v4 no longer supports v1beta1 option
 // HasDifferentWebhookVersion returns true if any other webhook version is tracked in the project configuration.
 func HasDifferentWebhookVersion(config config.Config, webhookVersion string) bool {
 	return hasDifferentAPIVersion(config.ListWebhookVersions(), webhookVersion)
 }
 
+// Deprecated: go/v4 no longer supports v1beta1 option
 func hasDifferentAPIVersion(versions []string, version string) bool {
 	return !(len(versions) == 0 || (len(versions) == 1 && versions[0] == version))
 }

pkg/plugin/util/util.go

@@ -191,6 +191,25 @@ func EnsureExistAndReplace(input, match, replace string) (string, error) {
 	return strings.Replace(input, match, replace, -1), nil
 }
 
+func HasFragment(path, target string) (bool, error) {
+	_, err := os.Stat(path)
+	if err != nil {
+		return false, err
+	}
+
+	// false positive
+	// nolint:gosec
+	b, err := os.ReadFile(path)
+	if err != nil {
+		return false, err
+	}
+
+	if !strings.Contains(string(b), target) {
+		return false, nil
+	}
+	return true, nil
+}
+
 // ReplaceInFile replaces all instances of old with new in the file at path.
 func ReplaceInFile(path, old, new string) error {
 	info, err := os.Stat(path)

pkg/plugins/golang/declarative/v1/init.go

@@ -41,36 +41,39 @@ func (p *initSubcommand) InjectConfig(c config.Config) error {
 }
 
 func (p *initSubcommand) Scaffold(fs machinery.Filesystem) error {
-	err := updateDockerfile()
-	if err != nil {
-		return err
-	}
-	return nil
+	return updateDockerfile()
 }
 
 // updateDockerfile will add channels staging required for declarative plugin
 func updateDockerfile() error {
 	fmt.Println("updating Dockerfile to add channels/ directory in the image")
-	managerFile := filepath.Join("Dockerfile")
+	dokerfile := filepath.Join("Dockerfile")
 
-	// nolint:lll
-	err := insertCodeIfDoesNotExist(managerFile,
-		"COPY controllers/ controllers/",
-		"\n# https://github.com/kubernetes-sigs/kubebuilder-declarative-pattern/blob/master/docs/addon/walkthrough/README.md#adding-a-manifest\n# Stage channels and make readable\nCOPY channels/ /channels/\nRUN chmod -R a+rx /channels/")
+	isLegacyLayout, err := util.HasFragment(dokerfile, "COPY controllers/ controllers/")
 	if err != nil {
 		return err
 	}
 
-	err = insertCodeIfDoesNotExist(managerFile,
-		"COPY --from=builder /workspace/manager .",
-		"\n# copy channels\nCOPY --from=builder /channels /channels\n")
-	if err != nil {
-		return err
+	if isLegacyLayout {
+		// nolint:lll
+		err := insertCodeIfDoesNotExist(dokerfile, "COPY controllers/ controllers/",
+			"\n# https://github.com/kubernetes-sigs/kubebuilder-declarative-pattern/blob/master/docs/addon/walkthrough/README.md#adding-a-manifest\n# Stage channels and make readable\nCOPY channels/ /channels/\nRUN chmod -R a+rx /channels/")
+		if err != nil {
+			return err
+		}
+	} else {
+		// nolint:lll
+		err := insertCodeIfDoesNotExist(dokerfile,
+			"COPY pkg/controllers/ pkg/controllers/",
+			"\n# https://github.com/kubernetes-sigs/kubebuilder-declarative-pattern/blob/master/docs/addon/walkthrough/README.md#adding-a-manifest\n# Stage channels and make readable\nCOPY channels/ /channels/\nRUN chmod -R a+rx /channels/")
+		if err != nil {
+			return err
+		}
 	}
+
 	return nil
 }
 
-// insertCodeIfDoesNotExist insert code if it does not already exists
 func insertCodeIfDoesNotExist(filename, target, code string) error {
 	// false positive
 	// nolint:gosec
@@ -85,4 +88,4 @@ func insertCodeIfDoesNotExist(filename, target, code string) error {
 	}
 
 	return util.InsertCode(filename, target, code)
-}
+}

pkg/plugins/golang/declarative/v1/scaffolds/internal/templates/controller.go

@@ -17,6 +17,7 @@ limitations under the License.
 package templates
 
 import (
+	"fmt"
 	"path/filepath"
 
 	"sigs.k8s.io/kubebuilder/v3/pkg/machinery"
@@ -43,6 +44,7 @@ func (f *Controller) SetTemplateDefaults() error {
 		}
 	}
 	f.Path = f.Resource.Replacer().Replace(f.Path)
+	fmt.Println(f.Path)
 
 	f.TemplateBody = controllerTemplate
 

pkg/plugins/golang/declarative/v1/scaffolds/internal/templates/types.go

@@ -45,6 +45,7 @@ func (f *Types) SetTemplateDefaults() error {
 		}
 	}
 	f.Path = f.Resource.Replacer().Replace(f.Path)
+	fmt.Println(f.Path)
 
 	f.TemplateBody = typesTemplate
 

pkg/plugins/golang/deploy-image/v1alpha1/api.go

@@ -20,10 +20,10 @@ import (
 	"errors"
 	"fmt"
 	"os"
-
-	goPlugin "sigs.k8s.io/kubebuilder/v3/pkg/plugins/golang"
+	"strings"
 
 	"sigs.k8s.io/kubebuilder/v3/pkg/plugin/util"
+	goPlugin "sigs.k8s.io/kubebuilder/v3/pkg/plugins/golang"
 
 	"github.com/spf13/pflag"
 	"sigs.k8s.io/kubebuilder/v3/pkg/config"
@@ -152,7 +152,14 @@ func (p *createAPISubcommand) InjectResource(res *resource.Resource) error {
 	p.options.DoAPI = true
 	p.options.DoController = true
 	p.options.Namespaced = true
-	p.options.UpdateResource(p.resource, p.config)
+
+	isLegacyLayout := false
+	for _, pluginKey := range p.config.GetPluginChain() {
+		if strings.Contains(pluginKey, "go.kubebuilder.io/v3") {
+			isLegacyLayout = true
+		}
+	}
+	p.options.UpdateResource(p.resource, p.config, isLegacyLayout)
 
 	if err := p.resource.Validate(); err != nil {
 		return err
@@ -165,12 +172,14 @@ func (p *createAPISubcommand) InjectResource(res *resource.Resource) error {
 	}
 
 	// Check CRDVersion against all other CRDVersions in p.config for compatibility.
+	// nolint:staticcheck
 	if util.HasDifferentCRDVersion(p.config, p.resource.API.CRDVersion) {
 		return fmt.Errorf("only one CRD version can be used for all resources, cannot add %q",
 			p.resource.API.CRDVersion)
 	}
 
 	// Check CRDVersion against all other CRDVersions in p.config for compatibility.
+	// nolint:staticcheck
 	if util.HasDifferentCRDVersion(p.config, p.resource.API.CRDVersion) {
 		return fmt.Errorf("only one CRD version can be used for all resources, cannot add %q",
 			p.resource.API.CRDVersion)