Cleanup unused functions

test/utils/runners.go

@@ -26,11 +26,9 @@ import (
 	"time"
 
 	apps "k8s.io/api/apps/v1"
-	batch "k8s.io/api/batch/v1"
 	v1 "k8s.io/api/core/v1"
 	storagev1 "k8s.io/api/storage/v1"
 	storagev1beta1 "k8s.io/api/storage/v1beta1"
-	apiequality "k8s.io/apimachinery/pkg/api/equality"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/api/resource"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -46,7 +44,6 @@ import (
 	clientset "k8s.io/client-go/kubernetes"
 	scaleclient "k8s.io/client-go/scale"
 	"k8s.io/client-go/util/workqueue"
-	batchinternal "k8s.io/kubernetes/pkg/apis/batch"
 	api "k8s.io/kubernetes/pkg/apis/core"
 	extensionsinternal "k8s.io/kubernetes/pkg/apis/extensions"
 	"k8s.io/utils/pointer"
@@ -66,7 +63,7 @@ func removePtr(replicas *int32) int32 {
 	return *replicas
 }
 
-func WaitUntilPodIsScheduled(ctx context.Context, c clientset.Interface, name, namespace string, timeout time.Duration) (*v1.Pod, error) {
+func waitUntilPodIsScheduled(ctx context.Context, c clientset.Interface, name, namespace string, timeout time.Duration) (*v1.Pod, error) {
 	// Wait until it's scheduled
 	p, err := c.CoreV1().Pods(namespace).Get(ctx, name, metav1.GetOptions{ResourceVersion: "0"})
 	if err == nil && p.Spec.NodeName != "" {
@@ -90,7 +87,7 @@ func RunPodAndGetNodeName(ctx context.Context, c clientset.Interface, pod *v1.Po
 	if err := CreatePodWithRetries(c, namespace, pod); err != nil {
 		return "", err
 	}
-	p, err := WaitUntilPodIsScheduled(ctx, c, name, namespace, timeout)
+	p, err := waitUntilPodIsScheduled(ctx, c, name, namespace, timeout)
 	if err != nil {
 		return "", err
 	}
@@ -218,11 +215,11 @@ type podInfo struct {
 	phase       string
 }
 
-// PodDiff is a map of pod name to podInfos
-type PodDiff map[string]*podInfo
+// podDiff is a map of pod name to podInfos
+type podDiff map[string]*podInfo
 
-// Print formats and prints the give PodDiff.
-func (p PodDiff) String(ignorePhases sets.String) string {
+// Print formats and prints the give podDiff.
+func (p podDiff) String(ignorePhases sets.String) string {
 	ret := ""
 	for name, info := range p {
 		if ignorePhases.Has(info.phase) {
@@ -259,7 +256,7 @@ func (p PodDiff) String(ignorePhases sets.String) string {
 
 // DeletedPods returns a slice of pods that were present at the beginning
 // and then disappeared.
-func (p PodDiff) DeletedPods() []string {
+func (p podDiff) DeletedPods() []string {
 	var deletedPods []string
 	for podName, podInfo := range p {
 		if podInfo.hostname == nonExist {
@@ -269,9 +266,9 @@ func (p PodDiff) DeletedPods() []string {
 	return deletedPods
 }
 
-// Diff computes a PodDiff given 2 lists of pods.
-func Diff(oldPods []*v1.Pod, curPods []*v1.Pod) PodDiff {
-	podInfoMap := PodDiff{}
+// diff computes a podDiff given 2 lists of pods.
+func diff(oldPods []*v1.Pod, curPods []*v1.Pod) podDiff {
+	podInfoMap := podDiff{}
 
 	// New pods will show up in the curPods list but not in oldPods. They have oldhostname/phase == nonexist.
 	for _, pod := range curPods {
@@ -459,81 +456,6 @@ func (config *ReplicaSetConfig) create() error {
 	return nil
 }
 
-// RunJob baunches (and verifies correctness) of a Job
-// and will wait for all pods it spawns to become "Running".
-// It's the caller's responsibility to clean up externally (i.e. use the
-// namespace lifecycle for handling Cleanup).
-func RunJob(ctx context.Context, config JobConfig) error {
-	err := config.create()
-	if err != nil {
-		return err
-	}
-	return config.start(ctx)
-}
-
-func (config *JobConfig) Run(ctx context.Context) error {
-	return RunJob(ctx, *config)
-}
-
-func (config *JobConfig) GetKind() schema.GroupKind {
-	return batchinternal.Kind("Job")
-}
-
-func (config *JobConfig) GetGroupResource() schema.GroupResource {
-	return batchinternal.Resource("jobs")
-}
-
-func (config *JobConfig) GetGroupVersionResource() schema.GroupVersionResource {
-	return batchinternal.SchemeGroupVersion.WithResource("jobs")
-}
-
-func (config *JobConfig) create() error {
-	job := &batch.Job{
-		ObjectMeta: metav1.ObjectMeta{
-			Name: config.Name,
-		},
-		Spec: batch.JobSpec{
-			Parallelism: pointer.Int32(int32(config.Replicas)),
-			Completions: pointer.Int32(int32(config.Replicas)),
-			Template: v1.PodTemplateSpec{
-				ObjectMeta: metav1.ObjectMeta{
-					Labels:      map[string]string{"name": config.Name},
-					Annotations: config.Annotations,
-				},
-				Spec: v1.PodSpec{
-					Affinity:                      config.Affinity,
-					TerminationGracePeriodSeconds: config.getTerminationGracePeriodSeconds(nil),
-					Containers: []v1.Container{
-						{
-							Name:            config.Name,
-							Image:           config.Image,
-							Command:         config.Command,
-							Lifecycle:       config.Lifecycle,
-							SecurityContext: config.SecurityContext,
-						},
-					},
-					RestartPolicy: v1.RestartPolicyOnFailure,
-				},
-			},
-		},
-	}
-
-	if len(config.SecretNames) > 0 {
-		attachSecrets(&job.Spec.Template, config.SecretNames)
-	}
-	if len(config.ConfigMapNames) > 0 {
-		attachConfigMaps(&job.Spec.Template, config.ConfigMapNames)
-	}
-
-	config.applyTo(&job.Spec.Template)
-
-	if err := CreateJobWithRetries(config.Client, config.Namespace, job); err != nil {
-		return fmt.Errorf("error creating job: %v", err)
-	}
-	config.RCConfigLog("Created job with name: %v, namespace: %v, parallelism/completions: %v", job.Name, config.Namespace, job.Spec.Parallelism)
-	return nil
-}
-
 // RunRC Launches (and verifies correctness) of a Replication Controller
 // and will wait for all pods it spawns to become "Running".
 // It's the caller's responsibility to clean up externally (i.e. use the
@@ -737,7 +659,7 @@ func (s *RCStartupStatus) String(name string) string {
 		name, len(s.Created), s.Expected, s.Running, s.Pending, s.Waiting, s.Inactive, s.Terminating, s.Unknown, s.RunningButNotReady)
 }
 
-func ComputeRCStartupStatus(pods []*v1.Pod, expected int) RCStartupStatus {
+func computeRCStartupStatus(pods []*v1.Pod, expected int) RCStartupStatus {
 	startupStatus := RCStartupStatus{
 		Expected:              expected,
 		Created:               make([]*v1.Pod, 0, expected),
@@ -819,7 +741,7 @@ func (config *RCConfig) start(ctx context.Context) error {
 		time.Sleep(interval)
 
 		pods := ps.List()
-		startupStatus := ComputeRCStartupStatus(pods, config.Replicas)
+		startupStatus := computeRCStartupStatus(pods, config.Replicas)
 
 		if config.CreatedPods != nil {
 			*config.CreatedPods = startupStatus.Created
@@ -843,7 +765,7 @@ func (config *RCConfig) start(ctx context.Context) error {
 			return fmt.Errorf("%d containers failed which is more than allowed %d", startupStatus.FailedContainers, maxContainerFailures)
 		}
 
-		diff := Diff(oldPods, pods)
+		diff := diff(oldPods, pods)
 		deletedPods := diff.DeletedPods()
 		podDeletionsCount += len(deletedPods)
 		if podDeletionsCount > config.MaxAllowedPodDeletions {
@@ -950,16 +872,6 @@ func WaitForEnoughPodsWithLabelRunning(c clientset.Interface, ns string, label l
 	return nil
 }
 
-type CountToStrategy struct {
-	Count    int
-	Strategy PrepareNodeStrategy
-}
-
-type TestNodePreparer interface {
-	PrepareNodes(ctx context.Context, nextNodeIndex int) error
-	CleanupNodes(ctx context.Context) error
-}
-
 type PrepareNodeStrategy interface {
 	// Modify pre-created Node objects before the test starts.
 	PreparePatch(node *v1.Node) []byte
@@ -1242,46 +1154,6 @@ func DoPrepareNode(ctx context.Context, client clientset.Interface, node *v1.Nod
 	return nil
 }
 
-func DoCleanupNode(ctx context.Context, client clientset.Interface, nodeName string, strategy PrepareNodeStrategy) error {
-	var err error
-	for attempt := 0; attempt < retries; attempt++ {
-		var node *v1.Node
-		node, err = client.CoreV1().Nodes().Get(ctx, nodeName, metav1.GetOptions{})
-		if err != nil {
-			return fmt.Errorf("skipping cleanup of Node: failed to get Node %v: %v", nodeName, err)
-		}
-		updatedNode := strategy.CleanupNode(ctx, node)
-		if apiequality.Semantic.DeepEqual(node, updatedNode) {
-			return nil
-		}
-		if _, err = client.CoreV1().Nodes().Update(ctx, updatedNode, metav1.UpdateOptions{}); err == nil {
-			break
-		}
-		if !apierrors.IsConflict(err) {
-			return fmt.Errorf("error when updating Node %v: %v", nodeName, err)
-		}
-		time.Sleep(100 * time.Millisecond)
-	}
-	if err != nil {
-		return fmt.Errorf("too many conflicts when trying to cleanup Node %v: %s", nodeName, err)
-	}
-
-	for attempt := 0; attempt < retries; attempt++ {
-		err = strategy.CleanupDependentObjects(ctx, nodeName, client)
-		if err == nil {
-			break
-		}
-		if !apierrors.IsConflict(err) {
-			return fmt.Errorf("error when cleaning up Node %v objects: %v", nodeName, err)
-		}
-		time.Sleep(100 * time.Millisecond)
-	}
-	if err != nil {
-		return fmt.Errorf("too many conflicts when trying to cleanup Node %v objects: %s", nodeName, err)
-	}
-	return nil
-}
-
 type TestPodCreateStrategy func(ctx context.Context, client clientset.Interface, namespace string, podCount int) error
 
 type CountToPodStrategy struct {
@@ -1296,6 +1168,16 @@ func NewTestPodCreatorConfig() *TestPodCreatorConfig {
 	return &config
 }
 
+type CountToStrategy struct {
+	Count    int
+	Strategy PrepareNodeStrategy
+}
+
+type TestNodePreparer interface {
+	PrepareNodes(ctx context.Context, nextNodeIndex int) error
+	CleanupNodes(ctx context.Context) error
+}
+
 func (c *TestPodCreatorConfig) AddStrategy(
 	namespace string, podCount int, strategy TestPodCreateStrategy) {
 	(*c)[namespace] = append((*c)[namespace], CountToPodStrategy{Count: podCount, Strategy: strategy})
@@ -1462,28 +1344,6 @@ func CreatePodWithPersistentVolume(ctx context.Context, client clientset.Interfa
 	return createError
 }
 
-func createController(client clientset.Interface, controllerName, namespace string, podCount int, podTemplate *v1.Pod) error {
-	rc := &v1.ReplicationController{
-		ObjectMeta: metav1.ObjectMeta{
-			Name: controllerName,
-		},
-		Spec: v1.ReplicationControllerSpec{
-			Replicas: pointer.Int32(int32(podCount)),
-			Selector: map[string]string{"name": controllerName},
-			Template: &v1.PodTemplateSpec{
-				ObjectMeta: metav1.ObjectMeta{
-					Labels: map[string]string{"name": controllerName},
-				},
-				Spec: podTemplate.Spec,
-			},
-		},
-	}
-	if err := CreateRCWithRetries(client, namespace, rc); err != nil {
-		return fmt.Errorf("error creating replication controller: %v", err)
-	}
-	return nil
-}
-
 func NewCustomCreatePodStrategy(podTemplate *v1.Pod) TestPodCreateStrategy {
 	return func(ctx context.Context, client clientset.Interface, namespace string, podCount int) error {
 		return CreatePod(ctx, client, namespace, podCount, podTemplate)
@@ -1499,107 +1359,6 @@ func NewCreatePodWithPersistentVolumeStrategy(claimTemplate *v1.PersistentVolume
 	}
 }
 
-func makeUnboundPersistentVolumeClaim(storageClass string) *v1.PersistentVolumeClaim {
-	return &v1.PersistentVolumeClaim{
-		Spec: v1.PersistentVolumeClaimSpec{
-			AccessModes:      []v1.PersistentVolumeAccessMode{v1.ReadOnlyMany},
-			StorageClassName: &storageClass,
-			Resources: v1.VolumeResourceRequirements{
-				Requests: v1.ResourceList{
-					v1.ResourceName(v1.ResourceStorage): resource.MustParse("1Gi"),
-				},
-			},
-		},
-	}
-}
-
-func NewCreatePodWithPersistentVolumeWithFirstConsumerStrategy(factory volumeFactory, podTemplate *v1.Pod) TestPodCreateStrategy {
-	return func(ctx context.Context, client clientset.Interface, namespace string, podCount int) error {
-		volumeBindingMode := storagev1.VolumeBindingWaitForFirstConsumer
-		storageClass := &storagev1.StorageClass{
-			ObjectMeta: metav1.ObjectMeta{
-				Name: "storagev1-class-1",
-			},
-			Provisioner:       "kubernetes.io/gce-pd",
-			VolumeBindingMode: &volumeBindingMode,
-		}
-		claimTemplate := makeUnboundPersistentVolumeClaim(storageClass.Name)
-
-		if err := CreateStorageClassWithRetries(client, storageClass); err != nil {
-			return fmt.Errorf("failed to create storagev1 class: %v", err)
-		}
-
-		factoryWithStorageClass := func(i int) *v1.PersistentVolume {
-			pv := factory(i)
-			pv.Spec.StorageClassName = storageClass.Name
-			return pv
-		}
-
-		return CreatePodWithPersistentVolume(ctx, client, namespace, claimTemplate, factoryWithStorageClass, podTemplate, podCount, false /* bindVolume */)
-	}
-}
-
-func NewSimpleCreatePodStrategy() TestPodCreateStrategy {
-	basePod := &v1.Pod{
-		ObjectMeta: metav1.ObjectMeta{
-			GenerateName: "simple-pod-",
-		},
-		Spec: MakePodSpec(),
-	}
-	return NewCustomCreatePodStrategy(basePod)
-}
-
-func NewSimpleWithControllerCreatePodStrategy(controllerName string) TestPodCreateStrategy {
-	return func(ctx context.Context, client clientset.Interface, namespace string, podCount int) error {
-		basePod := &v1.Pod{
-			ObjectMeta: metav1.ObjectMeta{
-				GenerateName: controllerName + "-pod-",
-				Labels:       map[string]string{"name": controllerName},
-			},
-			Spec: MakePodSpec(),
-		}
-		if err := createController(client, controllerName, namespace, podCount, basePod); err != nil {
-			return err
-		}
-		return CreatePod(ctx, client, namespace, podCount, basePod)
-	}
-}
-
-type SecretConfig struct {
-	Content   map[string]string
-	Client    clientset.Interface
-	Name      string
-	Namespace string
-	// If set this function will be used to print log lines instead of klog.
-	LogFunc func(fmt string, args ...interface{})
-}
-
-func (config *SecretConfig) Run() error {
-	secret := &v1.Secret{
-		ObjectMeta: metav1.ObjectMeta{
-			Name: config.Name,
-		},
-		StringData: map[string]string{},
-	}
-	for k, v := range config.Content {
-		secret.StringData[k] = v
-	}
-
-	if err := CreateSecretWithRetries(config.Client, config.Namespace, secret); err != nil {
-		return fmt.Errorf("error creating secret: %v", err)
-	}
-	config.LogFunc("Created secret %v/%v", config.Namespace, config.Name)
-	return nil
-}
-
-func (config *SecretConfig) Stop() error {
-	if err := DeleteResourceWithRetries(config.Client, api.Kind("Secret"), config.Namespace, config.Name, metav1.DeleteOptions{}); err != nil {
-		return fmt.Errorf("error deleting secret: %v", err)
-	}
-	config.LogFunc("Deleted secret %v/%v", config.Namespace, config.Name)
-	return nil
-}
-
 // TODO: attach secrets using different possibilities: env vars, image pull secrets.
 func attachSecrets(template *v1.PodTemplateSpec, secretNames []string) {
 	volumes := make([]v1.Volume, 0, len(secretNames))
@@ -1623,41 +1382,6 @@ func attachSecrets(template *v1.PodTemplateSpec, secretNames []string) {
 	template.Spec.Containers[0].VolumeMounts = mounts
 }
 
-type ConfigMapConfig struct {
-	Content   map[string]string
-	Client    clientset.Interface
-	Name      string
-	Namespace string
-	// If set this function will be used to print log lines instead of klog.
-	LogFunc func(fmt string, args ...interface{})
-}
-
-func (config *ConfigMapConfig) Run() error {
-	configMap := &v1.ConfigMap{
-		ObjectMeta: metav1.ObjectMeta{
-			Name: config.Name,
-		},
-		Data: map[string]string{},
-	}
-	for k, v := range config.Content {
-		configMap.Data[k] = v
-	}
-
-	if err := CreateConfigMapWithRetries(config.Client, config.Namespace, configMap); err != nil {
-		return fmt.Errorf("error creating configmap: %v", err)
-	}
-	config.LogFunc("Created configmap %v/%v", config.Namespace, config.Name)
-	return nil
-}
-
-func (config *ConfigMapConfig) Stop() error {
-	if err := DeleteResourceWithRetries(config.Client, api.Kind("ConfigMap"), config.Namespace, config.Name, metav1.DeleteOptions{}); err != nil {
-		return fmt.Errorf("error deleting configmap: %v", err)
-	}
-	config.LogFunc("Deleted configmap %v/%v", config.Namespace, config.Name)
-	return nil
-}
-
 // TODO: attach configmaps using different possibilities: env vars.
 func attachConfigMaps(template *v1.PodTemplateSpec, configMapNames []string) {
 	volumes := make([]v1.Volume, 0, len(configMapNames))