Enable the lint to check exported methods and fix issues

.golangci.yml

@@ -33,7 +33,6 @@ linters-settings:
       - name: error-strings
       - name: error-naming
       - name: exported
-        disabled: true  # TODO: Investigate if it should be enabled. Disabled for now due to many findings.
       - name: if-return
       - name: increment-decrement
       - name: var-naming

hack/docs/generate_samples.go

@@ -18,13 +18,12 @@ package main
 
 import (
 	log "github.com/sirupsen/logrus"
-
 	cronjob "sigs.k8s.io/kubebuilder/v4/hack/docs/internal/cronjob-tutorial"
 	gettingstarted "sigs.k8s.io/kubebuilder/v4/hack/docs/internal/getting-started"
 	multiversion "sigs.k8s.io/kubebuilder/v4/hack/docs/internal/multiversion-tutorial"
 )
 
-// Make sure executing `build_kb` to generate kb executable from the source code
+// KubebuilderBinName make sure executing `build_kb` to generate kb executable from the source code
 const KubebuilderBinName = "/tmp/kubebuilder/bin/kubebuilder"
 
 type tutorialGenerator interface {
@@ -38,9 +37,9 @@ func main() {
 	type generator func()
 
 	tutorials := map[string]generator{
-		"cronjob":         UpdateCronjobTutorial,
-		"getting-started": UpdateGettingStarted,
-		"multiversion":    UpdateMultiversionTutorial,
+		"cronjob":         updateCronjobTutorial,
+		"getting-started": updateGettingStarted,
+		"multiversion":    updateMultiversionTutorial,
 	}
 
 	log.SetFormatter(&log.TextFormatter{DisableTimestamp: true})
@@ -59,19 +58,19 @@ func updateTutorial(generator tutorialGenerator) {
 	generator.CodeGen()
 }
 
-func UpdateCronjobTutorial() {
+func updateCronjobTutorial() {
 	samplePath := "docs/book/src/cronjob-tutorial/testdata/project/"
 	sp := cronjob.NewSample(KubebuilderBinName, samplePath)
 	updateTutorial(&sp)
 }
 
-func UpdateGettingStarted() {
+func updateGettingStarted() {
 	samplePath := "docs/book/src/getting-started/testdata/project"
 	sp := gettingstarted.NewSample(KubebuilderBinName, samplePath)
 	updateTutorial(&sp)
 }
 
-func UpdateMultiversionTutorial() {
+func updateMultiversionTutorial() {
 	samplePath := "docs/book/src/multiversion-tutorial/testdata/project"
 	sp := cronjob.NewSample(KubebuilderBinName, samplePath)
 	updateTutorial(&sp)

hack/docs/internal/cronjob-tutorial/api_design.go

@@ -16,7 +16,7 @@ limitations under the License.
 
 package cronjob
 
-const CronjobSpecExplaination = `
+const cronjobSpecExplaination = `
 
 // +kubebuilder:docs-gen:collapse=Imports
 
@@ -49,7 +49,7 @@ const CronjobSpecExplaination = `
 */
 `
 
-const CronjobSpecStruct = `
+const cronjobSpecStruct = `
 	// +kubebuilder:validation:MinLength=0
 
 	// The schedule in Cron format, see https://en.wikipedia.org/wiki/Cron.
@@ -128,7 +128,7 @@ const (
  serialization, as mentioned above.
 */`
 
-const CronjobList = `
+const cronjobList = `
 
 	// A list of pointers to currently running jobs.
 	// +optional

hack/docs/internal/cronjob-tutorial/controller_implementation.go

@@ -16,15 +16,15 @@ limitations under the License.
 
 package cronjob
 
-const ControllerIntro = `
+const controllerIntro = `
 // +kubebuilder:docs-gen:collapse=Apache License
 
 /*
 We'll start out with some imports.  You'll see below that we'll need a few more imports
 than those scaffolded for us.  We'll talk about each one when we use it.
 */`
 
-const ControllerImport = `import (
+const controllerImport = `import (
 	"context"
 	"fmt"
 	"sort"
@@ -48,7 +48,7 @@ Next, we'll need a Clock, which will allow us to fake timing in our tests.
 */
 `
 
-const ControllerMockClock = `
+const controllerMockClock = `
 /*
 We'll mock out the clock to make it easier to jump around in time while testing,
 the "real" clock just calls` + " `" + `time.Now` + "`" + `.
@@ -72,7 +72,7 @@ a couple more [markers](/reference/markers/rbac.md).
 */
 `
 
-const ControllerReconcile = `
+const controllerReconcile = `
 // +kubebuilder:rbac:groups=batch,resources=jobs,verbs=get;list;watch;create;update;patch;delete
 // +kubebuilder:rbac:groups=batch,resources=jobs/status,verbs=get
 
@@ -84,7 +84,7 @@ var (
 )
 `
 
-const ControllerReconcileLogic = `log := log.FromContext(ctx)
+const controllerReconcileLogic = `log := log.FromContext(ctx)
 
 	/*
 		### 1: Load the CronJob by name
@@ -533,7 +533,7 @@ var (
 	apiGVStr    = batchv1.GroupVersion.String()
 )
 `
-const ControllerSetupWithManager = `
+const controllerSetupWithManager = `
 	// set up a real clock, since we're not in a test
 	if r.Clock == nil {
 		r.Clock = realClock{}

hack/docs/internal/cronjob-tutorial/generate_cronjob.go

@@ -22,16 +22,17 @@ import (
 
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/afero"
-
 	hackutils "sigs.k8s.io/kubebuilder/v4/hack/docs/utils"
 	pluginutil "sigs.k8s.io/kubebuilder/v4/pkg/plugin/util"
 	"sigs.k8s.io/kubebuilder/v4/test/e2e/utils"
 )
 
+// Sample define the sample which will be scaffolded
 type Sample struct {
 	ctx *utils.TestContext
 }
 
+// NewSample create a new instance of the cronjob sample and configure the KB CLI that will be used
 func NewSample(binaryPath, samplePath string) Sample {
 	log.Infof("Generating the sample context of Cronjob...")
 	ctx := hackutils.NewSampleContext(binaryPath, samplePath, "GO111MODULE=on")
@@ -49,6 +50,7 @@ func (sp *Sample) Prepare() {
 	hackutils.CheckError("creating directory for sample project", err)
 }
 
+// GenerateSampleProject will generate the sample
 func (sp *Sample) GenerateSampleProject() {
 	log.Infof("Initializing the cronjob project")
 
@@ -79,6 +81,7 @@ func (sp *Sample) GenerateSampleProject() {
 	hackutils.CheckError("Implementing admission webhook", err)
 }
 
+// UpdateTutorial the cronjob tutorial with the scaffold changes
 func (sp *Sample) UpdateTutorial() {
 	log.Println("Update tutorial with cronjob code")
 	// 1. update specs
@@ -168,12 +171,12 @@ func (sp *Sample) updateSpec() {
 
 	err = pluginutil.InsertCode(
 		filepath.Join(sp.ctx.Dir, "api/v1/cronjob_types.go"),
-		`to be serialized.`, CronjobSpecExplaination)
+		`to be serialized.`, cronjobSpecExplaination)
 	hackutils.CheckError("fixing cronjob_types.go", err)
 
 	err = pluginutil.InsertCode(
 		filepath.Join(sp.ctx.Dir, "api/v1/cronjob_types.go"),
-		`type CronJobSpec struct {`, CronjobSpecStruct)
+		`type CronJobSpec struct {`, cronjobSpecStruct)
 	hackutils.CheckError("fixing cronjob_types.go", err)
 
 	err = pluginutil.ReplaceInFile(
@@ -187,7 +190,7 @@ func (sp *Sample) updateSpec() {
 
 	err = pluginutil.InsertCode(
 		filepath.Join(sp.ctx.Dir, "api/v1/cronjob_types.go"),
-		`// Important: Run "make" to regenerate code after modifying this file`, CronjobList)
+		`// Important: Run "make" to regenerate code after modifying this file`, cronjobList)
 	hackutils.CheckError("fixing cronjob_types.go", err)
 
 	err = pluginutil.InsertCode(
@@ -229,13 +232,13 @@ func (sp *Sample) updateAPIStuff() {
 	err = pluginutil.InsertCode(
 		filepath.Join(sp.ctx.Dir, "api/v1/groupversion_info.go"),
 		`limitations under the License.
-*/`, GroupversionIntro)
+*/`, groupVersionIntro)
 	hackutils.CheckError("fixing groupversion_info.go", err)
 
 	err = pluginutil.InsertCode(
 		filepath.Join(sp.ctx.Dir, "api/v1/groupversion_info.go"),
 		`	"sigs.k8s.io/controller-runtime/pkg/scheme"
-)`, GroupversionSchema)
+)`, groupVersionSchema)
 	hackutils.CheckError("fixing groupversion_info.go", err)
 }
 
@@ -244,7 +247,7 @@ func (sp *Sample) updateController() {
 	err = pluginutil.InsertCode(
 		filepath.Join(sp.ctx.Dir, "internal/controller/cronjob_controller.go"),
 		`limitations under the License.
-*/`, ControllerIntro)
+*/`, controllerIntro)
 	hackutils.CheckError("fixing cronjob_controller.go", err)
 
 	err = pluginutil.ReplaceInFile(
@@ -258,7 +261,7 @@ func (sp *Sample) updateController() {
 	"sigs.k8s.io/controller-runtime/pkg/log"
 
 	batchv1 "tutorial.kubebuilder.io/project/api/v1"
-)`, ControllerImport)
+)`, controllerImport)
 	hackutils.CheckError("fixing cronjob_controller.go", err)
 
 	err = pluginutil.InsertCode(
@@ -270,12 +273,12 @@ func (sp *Sample) updateController() {
 	err = pluginutil.InsertCode(
 		filepath.Join(sp.ctx.Dir, "internal/controller/cronjob_controller.go"),
 		`	Clock
-}`, ControllerMockClock)
+}`, controllerMockClock)
 	hackutils.CheckError("fixing cronjob_controller.go", err)
 
 	err = pluginutil.InsertCode(
 		filepath.Join(sp.ctx.Dir, "internal/controller/cronjob_controller.go"),
-		`// +kubebuilder:rbac:groups=batch.tutorial.kubebuilder.io,resources=cronjobs/finalizers,verbs=update`, ControllerReconcile)
+		`// +kubebuilder:rbac:groups=batch.tutorial.kubebuilder.io,resources=cronjobs/finalizers,verbs=update`, controllerReconcile)
 	hackutils.CheckError("fixing cronjob_controller.go", err)
 
 	err = pluginutil.ReplaceInFile(
@@ -285,12 +288,12 @@ func (sp *Sample) updateController() {
 	// TODO(user): your logic here
 
 	return ctrl.Result{}, nil
-}`, ControllerReconcileLogic)
+}`, controllerReconcileLogic)
 	hackutils.CheckError("fixing cronjob_controller.go", err)
 
 	err = pluginutil.InsertCode(
 		filepath.Join(sp.ctx.Dir, "internal/controller/cronjob_controller.go"),
-		`SetupWithManager(mgr ctrl.Manager) error {`, ControllerSetupWithManager)
+		`SetupWithManager(mgr ctrl.Manager) error {`, controllerSetupWithManager)
 	hackutils.CheckError("fixing cronjob_controller.go", err)
 
 	err = pluginutil.InsertCode(
@@ -313,7 +316,7 @@ func (sp *Sample) updateMain() {
 	err = pluginutil.InsertCode(
 		filepath.Join(sp.ctx.Dir, "cmd/main.go"),
 		`// +kubebuilder:scaffold:imports
-)`, MainBatch)
+)`, mainBatch)
 	hackutils.CheckError("fixing main.go", err)
 
 	err = pluginutil.InsertCode(
@@ -347,7 +350,7 @@ CronJob controller's`+" `"+`SetupWithManager`+"`"+` method.
 		filepath.Join(sp.ctx.Dir, "cmd/main.go"),
 		`setupLog.Error(err, "unable to create controller", "controller", "CronJob")
 		os.Exit(1)
-	}`, MainEnableWebhook)
+	}`, mainEnableWebhook)
 	hackutils.CheckError("fixing main.go", err)
 
 	err = pluginutil.InsertCode(
@@ -512,7 +515,7 @@ func (sp *Sample) updateSuiteTest() {
 	err = pluginutil.InsertCode(
 		filepath.Join(sp.ctx.Dir, "internal/controller/suite_test.go"),
 		`limitations under the License.
-*/`, SuiteTestIntro)
+*/`, suiteTestIntro)
 	hackutils.CheckError("updating suite_test.go to add license intro", err)
 
 	err = pluginutil.InsertCode(
@@ -534,13 +537,13 @@ var (
 	cfg       *rest.Config
 	k8sClient client.Client
 )
-`, SuiteTestEnv)
+`, suiteTestEnv)
 	hackutils.CheckError("updating suite_test.go to add more variables", err)
 
 	err = pluginutil.InsertCode(
 		filepath.Join(sp.ctx.Dir, "internal/controller/suite_test.go"),
 		`ctx, cancel = context.WithCancel(context.TODO())
-`, SuiteTestReadCRD)
+`, suiteTestReadCRD)
 	hackutils.CheckError("updating suite_test.go to add text about CRD", err)
 
 	err = pluginutil.InsertCode(
@@ -559,7 +562,7 @@ var (
 	Expect(err).NotTo(HaveOccurred())
 
 	// +kubebuilder:scaffold:scheme
-`, SuiteTestAddSchema)
+`, suiteTestAddSchema)
 	hackutils.CheckError("updating suite_test.go to add schema", err)
 
 	err = pluginutil.InsertCode(
@@ -568,7 +571,7 @@ var (
 	k8sClient, err = client.New(cfg, client.Options{Scheme: scheme.Scheme})
 	Expect(err).NotTo(HaveOccurred())
 	Expect(k8sClient).NotTo(BeNil())
-`, SuiteTestDescription)
+`, suiteTestDescription)
 	hackutils.CheckError("updating suite_test.go for test description", err)
 
 	err = pluginutil.ReplaceInFile(
@@ -580,7 +583,7 @@ var _ = AfterSuite(func() {
 	err := testEnv.Stop()
 	Expect(err).NotTo(HaveOccurred())
 })
-`, SuiteTestCleanup)
+`, suiteTestCleanup)
 	hackutils.CheckError("updating suite_test.go to cleanup tests", err)
 }
 
@@ -623,7 +626,7 @@ func (sp *Sample) updateExample() {
 	// samples/batch_v1_cronjob
 	err = pluginutil.InsertCode(
 		filepath.Join(sp.ctx.Dir, "config/samples/batch_v1_cronjob.yaml"),
-		`spec:`, CronjobSample)
+		`spec:`, cronjobSample)
 	hackutils.CheckError("fixing samples/batch_v1_cronjob.yaml", err)
 
 	err = pluginutil.ReplaceInFile(
@@ -634,6 +637,6 @@ func (sp *Sample) updateExample() {
 
 func (sp *Sample) addControllerTest() {
 	var fs = afero.NewOsFs()
-	err := afero.WriteFile(fs, filepath.Join(sp.ctx.Dir, "internal/controller/cronjob_controller_test.go"), []byte(ControllerTest), 0600)
+	err := afero.WriteFile(fs, filepath.Join(sp.ctx.Dir, "internal/controller/cronjob_controller_test.go"), []byte(controllerTest), 0600)
 	hackutils.CheckError("adding cronjob_controller_test", err)
 }

hack/docs/internal/cronjob-tutorial/main_revisited.go

@@ -16,7 +16,7 @@ limitations under the License.
 
 package cronjob
 
-const MainBatch = `
+const mainBatch = `
 // +kubebuilder:docs-gen:collapse=Imports
 
 /*
@@ -28,7 +28,7 @@ If we would be using any other CRD we would have to add their scheme the same wa
 Builtin types such as Job have their scheme added by` + " `" + `clientgoscheme` + "`" + `.
 */`
 
-const MainEnableWebhook = `
+const mainEnableWebhook = `
 
 	/*
 		We'll also set up webhooks for our type, which we'll talk about next.

hack/docs/internal/cronjob-tutorial/other_api_files.go

@@ -16,7 +16,7 @@ limitations under the License.
 
 package cronjob
 
-const GroupversionIntro = `
+const groupVersionIntro = `
 // +kubebuilder:docs-gen:collapse=Apache License
 
 /*
@@ -28,7 +28,7 @@ metadata for the CRDs it creates from this package.
 */
 `
 
-const GroupversionSchema = `
+const groupVersionSchema = `
 /*
 Then, we have the commonly useful variables that help us set up our Scheme.
 Since we need to use all the types in this package in our controller, it's

hack/docs/internal/cronjob-tutorial/sample.go

@@ -16,7 +16,7 @@ limitations under the License.
 
 package cronjob
 
-const CronjobSample = `
+const cronjobSample = `
   schedule: "*/1 * * * *"
   startingDeadlineSeconds: 60
   concurrencyPolicy: Allow # explicitly specify, but Allow is also default.