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removes the remainder from ScalerFor method

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all remaining scalers were replaced by GenericScaler exept JobScaler.
It is not clear whether JobScaler could use generic scaler or not.
For more details see the pull request.
This commit is contained in:
p0lyn0mial 2018-01-29 09:28:02 +01:00
parent e290741719
commit 71eb1ff3b1
7 changed files with 39 additions and 58 deletions
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2
pkg/kubectl/cmd/util/factory_object_mapping.go
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@ -303,7 +303,7 @@ func (f *ring1Factory) Scaler(mapping *meta.RESTMapping) (kubectl.Scaler, error)
scalesGetter := scaleclient.New(restClient, mapper, dynamic.LegacyAPIPathResolverFunc, resolver) scalesGetter := scaleclient.New(restClient, mapper, dynamic.LegacyAPIPathResolverFunc, resolver)
gvk := mapping.GroupVersionKind.GroupVersion().WithResource(mapping.Resource) gvk := mapping.GroupVersionKind.GroupVersion().WithResource(mapping.Resource)
return kubectl.ScalerFor(mapping.GroupVersionKind.GroupKind(), clientset, scalesGetter, gvk.GroupResource()) return kubectl.ScalerFor(mapping.GroupVersionKind.GroupKind(), clientset.Batch(), scalesGetter, gvk.GroupResource()), nil
} }
func (f *ring1Factory) Reaper(mapping *meta.RESTMapping) (kubectl.Reaper, error) { func (f *ring1Factory) Reaper(mapping *meta.RESTMapping) (kubectl.Reaper, error) {

2
pkg/kubectl/delete.go
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@ -347,7 +347,7 @@ func (reaper *StatefulSetReaper) Stop(namespace, name string, timeout time.Durat
func (reaper *JobReaper) Stop(namespace, name string, timeout time.Duration, gracePeriod *metav1.DeleteOptions) error { func (reaper *JobReaper) Stop(namespace, name string, timeout time.Duration, gracePeriod *metav1.DeleteOptions) error {
jobs := reaper.client.Jobs(namespace) jobs := reaper.client.Jobs(namespace)
pods := reaper.podClient.Pods(namespace) pods := reaper.podClient.Pods(namespace)
scaler := &JobScaler{reaper.client} scaler := ScalerFor(schema.GroupKind{Group: batch.GroupName, Kind: "Job"}, reaper.client, nil, schema.GroupResource{})
job, err := jobs.Get(name, metav1.GetOptions{}) job, err := jobs.Get(name, metav1.GetOptions{})
if err != nil { if err != nil {
return err return err

41
pkg/kubectl/scale.go
View File

@ -34,7 +34,6 @@ import (
"k8s.io/kubernetes/pkg/apis/extensions" "k8s.io/kubernetes/pkg/apis/extensions"
scaleclient "k8s.io/client-go/scale" scaleclient "k8s.io/client-go/scale"
"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
appsclient "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/apps/internalversion" appsclient "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/apps/internalversion"
batchclient "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/batch/internalversion" batchclient "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/batch/internalversion"
coreclient "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/core/internalversion" coreclient "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/core/internalversion"
@ -54,20 +53,15 @@ type Scaler interface {
} }
// ScalerFor gets a scaler for a given resource // ScalerFor gets a scaler for a given resource
// TODO(p0lyn0mial): remove kind and internalclientset func ScalerFor(kind schema.GroupKind, jobsClient batchclient.JobsGetter, scalesGetter scaleclient.ScalesGetter, gr schema.GroupResource) Scaler {
// TODO(p0lyn0mial): once we have only one scaler, there is no need to return an error anymore. // it seems like jobs dont't follow "normal" scale semantics.
func ScalerFor(kind schema.GroupKind, c internalclientset.Interface, scalesGetter scaleclient.ScalesGetter, gr schema.GroupResource) (Scaler, error) { // For example it is not clear whether HPA could make use of it or not.
// For more details see: https://github.com/kubernetes/kubernetes/pull/58468
switch kind { switch kind {
case api.Kind("ReplicationController"):
return &ReplicationControllerScaler{c.Core()}, nil
case extensions.Kind("ReplicaSet"), apps.Kind("ReplicaSet"):
return &ReplicaSetScaler{c.Extensions()}, nil
case batch.Kind("Job"): case batch.Kind("Job"):
return &JobScaler{c.Batch()}, nil // Either kind of job can be scaled with Batch interface. return &jobScaler{jobsClient} // Either kind of job can be scaled with Batch interface.
case apps.Kind("StatefulSet"):
return &StatefulSetScaler{c.Apps()}, nil
default: default:
return &GenericScaler{scalesGetter, gr}, nil return &genericScaler{scalesGetter, gr}
} }
} }
@ -167,6 +161,7 @@ func (precondition *ScalePrecondition) ValidateReplicationController(controller
return nil return nil
} }
// TODO(p0lyn0mial): remove ReplicationControllerScaler
type ReplicationControllerScaler struct { type ReplicationControllerScaler struct {
c coreclient.ReplicationControllersGetter c coreclient.ReplicationControllersGetter
} }
@ -265,6 +260,7 @@ func (precondition *ScalePrecondition) ValidateReplicaSet(replicaSet *extensions
return nil return nil
} }
// TODO(p0lyn0mial): remove ReplicaSetScaler
type ReplicaSetScaler struct { type ReplicaSetScaler struct {
c extensionsclient.ReplicaSetsGetter c extensionsclient.ReplicaSetsGetter
} }
@ -339,6 +335,7 @@ func (precondition *ScalePrecondition) ValidateJob(job *batch.Job) error {
return nil return nil
} }
// TODO(p0lyn0mial): remove StatefulSetsGetter
type StatefulSetScaler struct { type StatefulSetScaler struct {
c appsclient.StatefulSetsGetter c appsclient.StatefulSetsGetter
} }
@ -395,13 +392,13 @@ func (scaler *StatefulSetScaler) Scale(namespace, name string, newSize uint, pre
return nil return nil
} }
type JobScaler struct { type jobScaler struct {
c batchclient.JobsGetter c batchclient.JobsGetter
} }
// ScaleSimple is responsible for updating job's parallelism. It returns the // ScaleSimple is responsible for updating job's parallelism. It returns the
// resourceVersion of the job if the update is successful. // resourceVersion of the job if the update is successful.
func (scaler *JobScaler) ScaleSimple(namespace, name string, preconditions *ScalePrecondition, newSize uint) (string, error) { func (scaler *jobScaler) ScaleSimple(namespace, name string, preconditions *ScalePrecondition, newSize uint) (string, error) {
job, err := scaler.c.Jobs(namespace).Get(name, metav1.GetOptions{}) job, err := scaler.c.Jobs(namespace).Get(name, metav1.GetOptions{})
if err != nil { if err != nil {
return "", ScaleError{ScaleGetFailure, "", err} return "", ScaleError{ScaleGetFailure, "", err}
@ -426,7 +423,7 @@ func (scaler *JobScaler) ScaleSimple(namespace, name string, preconditions *Scal
// Scale updates a Job to a new size, with optional precondition check (if preconditions is not nil), // Scale updates a Job to a new size, with optional precondition check (if preconditions is not nil),
// optional retries (if retry is not nil), and then optionally waits for parallelism to reach desired // optional retries (if retry is not nil), and then optionally waits for parallelism to reach desired
// number, which can be less than requested based on job's current progress. // number, which can be less than requested based on job's current progress.
func (scaler *JobScaler) Scale(namespace, name string, newSize uint, preconditions *ScalePrecondition, retry, waitForReplicas *RetryParams) error { func (scaler *jobScaler) Scale(namespace, name string, newSize uint, preconditions *ScalePrecondition, retry, waitForReplicas *RetryParams) error {
if preconditions == nil { if preconditions == nil {
preconditions = &ScalePrecondition{-1, ""} preconditions = &ScalePrecondition{-1, ""}
} }
@ -463,6 +460,7 @@ func (precondition *ScalePrecondition) ValidateDeployment(deployment *extensions
return nil return nil
} }
// TODO(p0lyn0mial): remove DeploymentScaler
type DeploymentScaler struct { type DeploymentScaler struct {
c extensionsclient.DeploymentsGetter c extensionsclient.DeploymentsGetter
} }
@ -534,19 +532,16 @@ func (precondition *ScalePrecondition) validateGeneric(scale *autoscalingapi.Sca
return nil return nil
} }
// GenericScaler can update scales for resources in a particular namespace // genericScaler can update scales for resources in a particular namespace
// TODO(po0lyn0mial): when the work on GenericScaler is done, don't type genericScaler struct {
// export the GenericScaler. Instead use ScalerFor method for getting the Scaler
// also update the UTs
type GenericScaler struct {
scaleNamespacer scaleclient.ScalesGetter scaleNamespacer scaleclient.ScalesGetter
targetGR schema.GroupResource targetGR schema.GroupResource
} }
var _ Scaler = &GenericScaler{} var _ Scaler = &genericScaler{}
// ScaleSimple updates a scale of a given resource. It returns the resourceVersion of the scale if the update was successful. // ScaleSimple updates a scale of a given resource. It returns the resourceVersion of the scale if the update was successful.
func (s *GenericScaler) ScaleSimple(namespace, name string, preconditions *ScalePrecondition, newSize uint) (updatedResourceVersion string, err error) { func (s *genericScaler) ScaleSimple(namespace, name string, preconditions *ScalePrecondition, newSize uint) (updatedResourceVersion string, err error) {
scale, err := s.scaleNamespacer.Scales(namespace).Get(s.targetGR, name) scale, err := s.scaleNamespacer.Scales(namespace).Get(s.targetGR, name)
if err != nil { if err != nil {
return "", ScaleError{ScaleGetFailure, "", err} return "", ScaleError{ScaleGetFailure, "", err}
@ -570,7 +565,7 @@ func (s *GenericScaler) ScaleSimple(namespace, name string, preconditions *Scale
// Scale updates a scale of a given resource to a new size, with optional precondition check (if preconditions is not nil), // Scale updates a scale of a given resource to a new size, with optional precondition check (if preconditions is not nil),
// optional retries (if retry is not nil), and then optionally waits for the status to reach desired count. // optional retries (if retry is not nil), and then optionally waits for the status to reach desired count.
func (s *GenericScaler) Scale(namespace, resourceName string, newSize uint, preconditions *ScalePrecondition, retry, waitForReplicas *RetryParams) error { func (s *genericScaler) Scale(namespace, resourceName string, newSize uint, preconditions *ScalePrecondition, retry, waitForReplicas *RetryParams) error {
if preconditions == nil { if preconditions == nil {
preconditions = &ScalePrecondition{-1, ""} preconditions = &ScalePrecondition{-1, ""}
} }

34
pkg/kubectl/scale_test.go
View File

@ -281,13 +281,13 @@ func TestValidateReplicationController(t *testing.T) {
} }
} }
type ErrorJobs struct { type errorJobs struct {
batchclient.JobInterface batchclient.JobInterface
conflict bool conflict bool
invalid bool invalid bool
} }
func (c *ErrorJobs) Update(job *batch.Job) (*batch.Job, error) { func (c *errorJobs) Update(job *batch.Job) (*batch.Job, error) {
switch { switch {
case c.invalid: case c.invalid:
return nil, kerrors.NewInvalid(api.Kind(job.Kind), job.Name, nil) return nil, kerrors.NewInvalid(api.Kind(job.Kind), job.Name, nil)
@ -297,7 +297,7 @@ func (c *ErrorJobs) Update(job *batch.Job) (*batch.Job, error) {
return nil, errors.New("Job update failure") return nil, errors.New("Job update failure")
} }
func (c *ErrorJobs) Get(name string, options metav1.GetOptions) (*batch.Job, error) { func (c *errorJobs) Get(name string, options metav1.GetOptions) (*batch.Job, error) {
zero := int32(0) zero := int32(0)
return &batch.Job{ return &batch.Job{
Spec: batch.JobSpec{ Spec: batch.JobSpec{
@ -306,14 +306,14 @@ func (c *ErrorJobs) Get(name string, options metav1.GetOptions) (*batch.Job, err
}, nil }, nil
} }
type ErrorJobClient struct { type errorJobClient struct {
batchclient.JobsGetter batchclient.JobsGetter
conflict bool conflict bool
invalid bool invalid bool
} }
func (c *ErrorJobClient) Jobs(namespace string) batchclient.JobInterface { func (c *errorJobClient) Jobs(namespace string) batchclient.JobInterface {
return &ErrorJobs{ return &errorJobs{
JobInterface: c.JobsGetter.Jobs(namespace), JobInterface: c.JobsGetter.Jobs(namespace),
conflict: c.conflict, conflict: c.conflict,
invalid: c.invalid, invalid: c.invalid,
@ -321,14 +321,14 @@ func (c *ErrorJobClient) Jobs(namespace string) batchclient.JobInterface {
} }
func TestJobScaleRetry(t *testing.T) { func TestJobScaleRetry(t *testing.T) {
fake := &ErrorJobClient{JobsGetter: fake.NewSimpleClientset().Batch(), conflict: true} fake := &errorJobClient{JobsGetter: fake.NewSimpleClientset().Batch(), conflict: true}
scaler := JobScaler{fake} scaler := ScalerFor(schema.GroupKind{Group: batch.GroupName, Kind: "Job"}, fake, nil, schema.GroupResource{})
preconditions := ScalePrecondition{-1, ""} preconditions := ScalePrecondition{-1, ""}
count := uint(3) count := uint(3)
name := "foo" name := "foo"
namespace := "default" namespace := "default"
scaleFunc := ScaleCondition(&scaler, &preconditions, namespace, name, count, nil) scaleFunc := ScaleCondition(scaler, &preconditions, namespace, name, count, nil)
pass, err := scaleFunc() pass, err := scaleFunc()
if pass != false { if pass != false {
t.Errorf("Expected an update failure to return pass = false, got pass = %v", pass) t.Errorf("Expected an update failure to return pass = false, got pass = %v", pass)
@ -337,7 +337,7 @@ func TestJobScaleRetry(t *testing.T) {
t.Errorf("Did not expect an error on update failure, got %v", err) t.Errorf("Did not expect an error on update failure, got %v", err)
} }
preconditions = ScalePrecondition{3, ""} preconditions = ScalePrecondition{3, ""}
scaleFunc = ScaleCondition(&scaler, &preconditions, namespace, name, count, nil) scaleFunc = ScaleCondition(scaler, &preconditions, namespace, name, count, nil)
pass, err = scaleFunc() pass, err = scaleFunc()
if err == nil { if err == nil {
t.Error("Expected error on precondition failure") t.Error("Expected error on precondition failure")
@ -355,7 +355,7 @@ func job() *batch.Job {
func TestJobScale(t *testing.T) { func TestJobScale(t *testing.T) {
fakeClientset := fake.NewSimpleClientset(job()) fakeClientset := fake.NewSimpleClientset(job())
scaler := JobScaler{fakeClientset.Batch()} scaler := ScalerFor(schema.GroupKind{Group: batch.GroupName, Kind: "Job"}, fakeClientset.Batch(), nil, schema.GroupResource{})
preconditions := ScalePrecondition{-1, ""} preconditions := ScalePrecondition{-1, ""}
count := uint(3) count := uint(3)
name := "foo" name := "foo"
@ -374,14 +374,14 @@ func TestJobScale(t *testing.T) {
} }
func TestJobScaleInvalid(t *testing.T) { func TestJobScaleInvalid(t *testing.T) {
fake := &ErrorJobClient{JobsGetter: fake.NewSimpleClientset().Batch(), invalid: true} fake := &errorJobClient{JobsGetter: fake.NewSimpleClientset().Batch(), invalid: true}
scaler := JobScaler{fake} scaler := ScalerFor(schema.GroupKind{Group: batch.GroupName, Kind: "Job"}, fake, nil, schema.GroupResource{})
preconditions := ScalePrecondition{-1, ""} preconditions := ScalePrecondition{-1, ""}
count := uint(3) count := uint(3)
name := "foo" name := "foo"
namespace := "default" namespace := "default"
scaleFunc := ScaleCondition(&scaler, &preconditions, namespace, name, count, nil) scaleFunc := ScaleCondition(scaler, &preconditions, namespace, name, count, nil)
pass, err := scaleFunc() pass, err := scaleFunc()
if pass { if pass {
t.Errorf("Expected an update failure to return pass = false, got pass = %v", pass) t.Errorf("Expected an update failure to return pass = false, got pass = %v", pass)
@ -403,7 +403,7 @@ func TestJobScaleFailsPreconditions(t *testing.T) {
Parallelism: &ten, Parallelism: &ten,
}, },
}) })
scaler := JobScaler{fake.Batch()} scaler := ScalerFor(schema.GroupKind{Group: batch.GroupName, Kind: "Job"}, fake.Batch(), nil, schema.GroupResource{})
preconditions := ScalePrecondition{2, ""} preconditions := ScalePrecondition{2, ""}
count := uint(3) count := uint(3)
name := "foo" name := "foo"
@ -1425,7 +1425,7 @@ func TestGenericScaleSimple(t *testing.T) {
// act // act
for index, scenario := range scenarios { for index, scenario := range scenarios {
t.Run(fmt.Sprintf("running scenario %d: %s", index+1, scenario.name), func(t *testing.T) { t.Run(fmt.Sprintf("running scenario %d: %s", index+1, scenario.name), func(t *testing.T) {
target := GenericScaler{scenario.scaleGetter, scenario.targetGR} target := ScalerFor(schema.GroupKind{}, nil, scenario.scaleGetter, scenario.targetGR)
resVersion, err := target.ScaleSimple("default", scenario.resName, &scenario.precondition, uint(scenario.newSize)) resVersion, err := target.ScaleSimple("default", scenario.resName, &scenario.precondition, uint(scenario.newSize))
@ -1522,7 +1522,7 @@ func TestGenericScale(t *testing.T) {
// act // act
for index, scenario := range scenarios { for index, scenario := range scenarios {
t.Run(fmt.Sprintf("running scenario %d: %s", index+1, scenario.name), func(t *testing.T) { t.Run(fmt.Sprintf("running scenario %d: %s", index+1, scenario.name), func(t *testing.T) {
target := GenericScaler{scenario.scaleGetter, scenario.targetGR} target := ScalerFor(schema.GroupKind{}, nil, scenario.scaleGetter, scenario.targetGR)
err := target.Scale("default", scenario.resName, uint(scenario.newSize), &scenario.precondition, nil, scenario.waitForReplicas) err := target.Scale("default", scenario.resName, uint(scenario.newSize), &scenario.precondition, nil, scenario.waitForReplicas)

2
test/e2e/framework/deployment_util.go
View File

@ -179,8 +179,6 @@ func WatchRecreateDeployment(c clientset.Interface, d *extensions.Deployment) er
return err return err
} }
//TODO(p0lyn0mial): remove internalClientset and kind.
//TODO(p0lyn0mial): update the callers.
func ScaleDeployment(clientset clientset.Interface, internalClientset internalclientset.Interface, scalesGetter scaleclient.ScalesGetter, ns, name string, size uint, wait bool) error { func ScaleDeployment(clientset clientset.Interface, internalClientset internalclientset.Interface, scalesGetter scaleclient.ScalesGetter, ns, name string, size uint, wait bool) error {
return ScaleResource(clientset, internalClientset, scalesGetter, ns, name, size, wait, extensionsinternal.Kind("Deployment"), extensionsinternal.Resource("deployments")) return ScaleResource(clientset, internalClientset, scalesGetter, ns, name, size, wait, extensionsinternal.Kind("Deployment"), extensionsinternal.Resource("deployments"))
} }

2
test/e2e/framework/rc_util.go
View File

@ -159,8 +159,6 @@ func DeleteRCAndPods(clientset clientset.Interface, internalClientset internalcl
return DeleteResourceAndPods(clientset, internalClientset, api.Kind("ReplicationController"), ns, name) return DeleteResourceAndPods(clientset, internalClientset, api.Kind("ReplicationController"), ns, name)
} }
//TODO(p0lyn0mial): remove internalClientset.
//TODO(p0lyn0mial): update the callers.
func ScaleRC(clientset clientset.Interface, internalClientset internalclientset.Interface, scalesGetter scaleclient.ScalesGetter, ns, name string, size uint, wait bool) error { func ScaleRC(clientset clientset.Interface, internalClientset internalclientset.Interface, scalesGetter scaleclient.ScalesGetter, ns, name string, size uint, wait bool) error {
return ScaleResource(clientset, internalClientset, scalesGetter, ns, name, size, wait, api.Kind("ReplicationController"), api.Resource("replicationcontrollers")) return ScaleResource(clientset, internalClientset, scalesGetter, ns, name, size, wait, api.Kind("ReplicationController"), api.Resource("replicationcontrollers"))
} }

14
test/e2e/framework/util.go
View File

@ -2683,13 +2683,6 @@ func RemoveAvoidPodsOffNode(c clientset.Interface, nodeName string) {
ExpectNoError(err) ExpectNoError(err)
} }
//TODO(p0lyn0mial): remove internalClientset and kind
func getScalerForKind(internalClientset internalclientset.Interface, kind schema.GroupKind, scalesGetter scaleclient.ScalesGetter, gr schema.GroupResource) (kubectl.Scaler, error) {
return kubectl.ScalerFor(kind, internalClientset, scalesGetter, gr)
}
//TODO(p0lyn0mial): remove internalClientset and kind.
//TODO(p0lyn0mial): update the callers.
func ScaleResource( func ScaleResource(
clientset clientset.Interface, clientset clientset.Interface,
internalClientset internalclientset.Interface, internalClientset internalclientset.Interface,
@ -2701,13 +2694,10 @@ func ScaleResource(
gr schema.GroupResource, gr schema.GroupResource,
) error { ) error {
By(fmt.Sprintf("Scaling %v %s in namespace %s to %d", kind, name, ns, size)) By(fmt.Sprintf("Scaling %v %s in namespace %s to %d", kind, name, ns, size))
scaler, err := getScalerForKind(internalClientset, kind, scalesGetter, gr) scaler := kubectl.ScalerFor(kind, internalClientset.Batch(), scalesGetter, gr)
if err != nil {
return err
}
waitForScale := kubectl.NewRetryParams(5*time.Second, 1*time.Minute) waitForScale := kubectl.NewRetryParams(5*time.Second, 1*time.Minute)
waitForReplicas := kubectl.NewRetryParams(5*time.Second, 5*time.Minute) waitForReplicas := kubectl.NewRetryParams(5*time.Second, 5*time.Minute)
if err = scaler.Scale(ns, name, size, nil, waitForScale, waitForReplicas); err != nil { if err := scaler.Scale(ns, name, size, nil, waitForScale, waitForReplicas); err != nil {
return fmt.Errorf("error while scaling RC %s to %d replicas: %v", name, size, err) return fmt.Errorf("error while scaling RC %s to %d replicas: %v", name, size, err)
} }
if !wait { if !wait {