config: add project-name config key and optional init --project-name

docs/book/src/cronjob-tutorial/cronjob-tutorial.md

@@ -49,5 +49,10 @@ project:
 kubebuilder init --domain tutorial.kubebuilder.io
 ```
 
+<aside class="note">
+Your project's name defaults to that of your current working directory.
+You can pass `--project-name=<dns1123-label-string>` to set a different project name.
+</aside>
+
 Now that we've got a project in place, let's take a look at what
 Kubebuilder has scaffolded for us so far...

pkg/model/config/config.go

@@ -41,6 +41,9 @@ type Config struct {
 	// Repo is the go package name of the project root
 	Repo string `json:"repo,omitempty"`
 
+	// ProjectName is the name of this controller project set on initialization.
+	ProjectName string `json:"project-name,omitempty"`
+
 	// Resources tracks scaffolded resources in the project
 	// This info is tracked only in project with version 2
 	Resources []GVK `json:"resources,omitempty"`

pkg/plugin/v3/init.go

@@ -18,6 +18,7 @@ package v3
 
 import (
 	"fmt"
+	"os"
 	"path"
 	"strings"
 
@@ -90,6 +91,7 @@ func (p *initPlugin) BindFlags(fs *pflag.FlagSet) {
 	fs.StringVar(&p.config.Repo, "repo", "", "name to use for go module (e.g., github.com/user/repo), "+
 		"defaults to the go package of the current working directory.")
 	fs.StringVar(&p.config.Domain, "domain", "my.domain", "domain for groups")
+	fs.StringVar(&p.config.ProjectName, "project-name", "", "name of this project")
 }
 
 func (p *initPlugin) InjectConfig(c *config.Config) {
@@ -108,6 +110,19 @@ func (p *initPlugin) Validate() error {
 			return err
 		}
 	}
+
+	// Check if the project name is a valid k8s namespace (DNS 1123 label).
+	if p.config.ProjectName == "" {
+		dir, err := os.Getwd()
+		if err != nil {
+			return fmt.Errorf("error getting current directory: %v", err)
+		}
+		p.config.ProjectName = path.Base(dir)
+	}
+	if err := validation.IsDNS1123Label(strings.ToLower(p.config.ProjectName)); err != nil {
+		return fmt.Errorf("project name (%s) is invalid: %v", p.config.ProjectName, err)
+	}
+
 	// Try to guess repository if flag is not set.
 	if p.config.Repo == "" {
 		repoPath, err := util.FindCurrentRepo()
@@ -117,13 +132,6 @@ func (p *initPlugin) Validate() error {
 		p.config.Repo = repoPath
 	}
 
-	// Use base repository path as project name, since a project should be able to exist in an
-	// arbitrarily-named directory.
-	projectName := path.Base(p.config.Repo)
-	if err := validation.IsDNS1123Label(strings.ToLower(projectName)); err != nil {
-		return fmt.Errorf("project name (%s) is invalid: %v", projectName, err)
-	}
-
 	return nil
 }
 

pkg/plugin/v3/scaffolds/init.go

@@ -113,7 +113,7 @@ func (s *initScaffolder) scaffold() error {
 		},
 		&templates.Dockerfile{},
 		&templates.DockerignoreFile{},
-		&templates.Kustomize{},
+		&templates.Kustomize{Prefix: s.config.ProjectName},
 		&templates.ManagerWebhookPatch{},
 		&templates.ManagerRoleBinding{},
 		&templates.LeaderElectionRole{},

pkg/plugin/v3/scaffolds/internal/templates/kustomize.go

@@ -18,7 +18,6 @@ package templates
 
 import (
 	"os"
-	"path"
 	"path/filepath"
 	"strings"
 
@@ -30,7 +29,6 @@ var _ file.Template = &Kustomize{}
 // Kustomize scaffolds the Kustomization file for the default overlay
 type Kustomize struct {
 	file.TemplateMixin
-	file.RepositoryMixin
 
 	// Prefix to use for name prefix customization
 	Prefix string
@@ -47,16 +45,12 @@ func (f *Kustomize) SetTemplateDefaults() error {
 	f.IfExistsAction = file.Error
 
 	if f.Prefix == "" {
-		if f.Repo != "" {
-			f.Prefix = strings.ToLower(path.Base(f.Repo))
-		} else {
-			// Use directory name as prefix if no repo is present.
-			dir, err := os.Getwd()
-			if err != nil {
-				return err
-			}
-			f.Prefix = strings.ToLower(filepath.Base(dir))
+		// Use directory name as prefix.
+		wd, err := os.Getwd()
+		if err != nil {
+			return err
 		}
+		f.Prefix = strings.ToLower(filepath.Base(wd))
 	}
 
 	return nil

testdata/project-v3-addon/PROJECT

@@ -1,5 +1,6 @@
 domain: testproject.org
 layout: go.kubebuilder.io/v3-alpha
+project-name: project-v3-addon
 repo: sigs.k8s.io/kubebuilder/testdata/project-v3-addon
 resources:
 - group: crew

testdata/project-v3-multigroup/PROJECT

@@ -1,6 +1,7 @@
 domain: testproject.org
 layout: go.kubebuilder.io/v3-alpha
 multigroup: true
+project-name: project-v3-multigroup
 repo: sigs.k8s.io/kubebuilder/testdata/project-v3-multigroup
 resources:
 - group: crew

testdata/project-v3/PROJECT

@@ -1,5 +1,6 @@
 domain: testproject.org
 layout: go.kubebuilder.io/v3-alpha
+project-name: project-v3
 repo: sigs.k8s.io/kubebuilder/testdata/project-v3
 resources:
 - group: crew