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Fix DefaultTolerationSeconds admission plugin. It was using

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versioned object whereas admission plugins operate on internal objects.
This commit is contained in:
Avesh Agarwal 2017-03-08 16:22:39 -05:00
parent 7b4bec038c
commit 9f533de80d
5 changed files with 244 additions and 101 deletions
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38
pkg/api/helpers.go
View File

@ -465,6 +465,44 @@ const (
ObjectTTLAnnotationKey string = "node.alpha.kubernetes.io/ttl"
)
// AddOrUpdateTolerationInPod tries to add a toleration to the pod's toleration list.
// Returns true if something was updated, false otherwise.
func AddOrUpdateTolerationInPod(pod *Pod, toleration *Toleration) (bool, error) {
podTolerations := pod.Spec.Tolerations
var newTolerations []Toleration
updated := false
for i := range podTolerations {
if toleration.MatchToleration(&podTolerations[i]) {
if Semantic.DeepEqual(toleration, podTolerations[i]) {
return false, nil
}
newTolerations = append(newTolerations, *toleration)
updated = true
continue
}
newTolerations = append(newTolerations, podTolerations[i])
}
if !updated {
newTolerations = append(newTolerations, *toleration)
}
pod.Spec.Tolerations = newTolerations
return true, nil
}
// MatchToleration checks if the toleration matches tolerationToMatch. Tolerations are unique by <key,effect,operator,value>,
// if the two tolerations have same <key,effect,operator,value> combination, regard as they match.
// TODO: uniqueness check for tolerations in api validations.
func (t *Toleration) MatchToleration(tolerationToMatch *Toleration) bool {
return t.Key == tolerationToMatch.Key &&
t.Effect == tolerationToMatch.Effect &&
t.Operator == tolerationToMatch.Operator &&
t.Value == tolerationToMatch.Value
}
// TolerationToleratesTaint checks if the toleration tolerates the taint.
func TolerationToleratesTaint(toleration *Toleration, taint *Taint) bool {
if len(toleration.Effect) != 0 && toleration.Effect != taint.Effect {

5
plugin/pkg/admission/defaulttolerationseconds/BUILD
View File

@ -15,7 +15,6 @@ go_test(
tags = ["automanaged"],
deps = [
"//pkg/api:go_default_library",
"//pkg/api/v1:go_default_library",
"//vendor:k8s.io/apimachinery/pkg/apis/meta/v1",
"//vendor:k8s.io/apiserver/pkg/admission",
],
@ -26,8 +25,8 @@ go_library(
srcs = ["admission.go"],
tags = ["automanaged"],
deps = [
"//pkg/api/v1:go_default_library",
"//vendor:github.com/golang/glog",
"//pkg/api:go_default_library",
"//vendor:k8s.io/apimachinery/pkg/api/errors",
"//vendor:k8s.io/apimachinery/pkg/apis/meta/v1",
"//vendor:k8s.io/apiserver/pkg/admission",
],

33
plugin/pkg/admission/defaulttolerationseconds/admission.go
View File

@ -21,11 +21,10 @@ import (
"fmt"
"io"
"github.com/golang/glog"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apiserver/pkg/admission"
"k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/api"
)
var (
@ -62,28 +61,32 @@ func NewDefaultTolerationSeconds() admission.Interface {
}
func (p *plugin) Admit(attributes admission.Attributes) (err error) {
if attributes.GetResource().GroupResource() != v1.Resource("pods") {
if attributes.GetResource().GroupResource() != api.Resource("pods") {
return nil
}
pod, ok := attributes.GetObject().(*v1.Pod)
if !ok {
glog.Errorf("expected pod but got %s", attributes.GetKind().Kind)
if len(attributes.GetSubresource()) > 0 {
// only run the checks below on pods proper and not subresources
return nil
}
pod, ok := attributes.GetObject().(*api.Pod)
if !ok {
return errors.NewBadRequest(fmt.Sprintf("expected *api.Pod but got %T", attributes.GetObject()))
}
tolerations := pod.Spec.Tolerations
toleratesNodeNotReady := false
toleratesNodeUnreachable := false
for _, toleration := range tolerations {
if (toleration.Key == metav1.TaintNodeNotReady || len(toleration.Key) == 0) &&
(toleration.Effect == v1.TaintEffectNoExecute || len(toleration.Effect) == 0) {
(toleration.Effect == api.TaintEffectNoExecute || len(toleration.Effect) == 0) {
toleratesNodeNotReady = true
}
if (toleration.Key == metav1.TaintNodeUnreachable || len(toleration.Key) == 0) &&
(toleration.Effect == v1.TaintEffectNoExecute || len(toleration.Effect) == 0) {
(toleration.Effect == api.TaintEffectNoExecute || len(toleration.Effect) == 0) {
toleratesNodeUnreachable = true
}
}
@ -94,10 +97,10 @@ func (p *plugin) Admit(attributes admission.Attributes) (err error) {
}
if !toleratesNodeNotReady {
_, err := v1.AddOrUpdateTolerationInPod(pod, &v1.Toleration{
_, err := api.AddOrUpdateTolerationInPod(pod, &api.Toleration{
Key: metav1.TaintNodeNotReady,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: defaultNotReadyTolerationSeconds,
})
if err != nil {
@ -107,10 +110,10 @@ func (p *plugin) Admit(attributes admission.Attributes) (err error) {
}
if !toleratesNodeUnreachable {
_, err := v1.AddOrUpdateTolerationInPod(pod, &v1.Toleration{
_, err := api.AddOrUpdateTolerationInPod(pod, &api.Toleration{
Key: metav1.TaintNodeUnreachable,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: defaultUnreachableTolerationSeconds,
})
if err != nil {

165
plugin/pkg/admission/defaulttolerationseconds/admission_test.go
View File

@ -22,7 +22,6 @@ import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apiserver/pkg/admission"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/v1"
)
func TestForgivenessAdmission(t *testing.T) {
@ -35,27 +34,27 @@ func TestForgivenessAdmission(t *testing.T) {
handler := NewDefaultTolerationSeconds()
tests := []struct {
description string
requestedPod v1.Pod
expectedPod v1.Pod
requestedPod api.Pod
expectedPod api.Pod
}{
{
description: "pod has no tolerations, expect add tolerations for `notread:NoExecute` and `unreachable:NoExecute`",
requestedPod: v1.Pod{
Spec: v1.PodSpec{},
requestedPod: api.Pod{
Spec: api.PodSpec{},
},
expectedPod: v1.Pod{
Spec: v1.PodSpec{
Tolerations: []v1.Toleration{
expectedPod: api.Pod{
Spec: api.PodSpec{
Tolerations: []api.Toleration{
{
Key: metav1.TaintNodeNotReady,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: &defaultTolerationSeconds,
},
{
Key: metav1.TaintNodeUnreachable,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: &defaultTolerationSeconds,
},
},
@ -64,39 +63,39 @@ func TestForgivenessAdmission(t *testing.T) {
},
{
description: "pod has tolerations, but none is for taint `notread:NoExecute` or `unreachable:NoExecute`, expect add tolerations for `notread:NoExecute` and `unreachable:NoExecute`",
requestedPod: v1.Pod{
Spec: v1.PodSpec{
Tolerations: []v1.Toleration{
requestedPod: api.Pod{
Spec: api.PodSpec{
Tolerations: []api.Toleration{
{
Key: "foo",
Operator: v1.TolerationOpEqual,
Operator: api.TolerationOpEqual,
Value: "bar",
Effect: v1.TaintEffectNoSchedule,
Effect: api.TaintEffectNoSchedule,
TolerationSeconds: genTolerationSeconds(700),
},
},
},
},
expectedPod: v1.Pod{
Spec: v1.PodSpec{
Tolerations: []v1.Toleration{
expectedPod: api.Pod{
Spec: api.PodSpec{
Tolerations: []api.Toleration{
{
Key: "foo",
Operator: v1.TolerationOpEqual,
Operator: api.TolerationOpEqual,
Value: "bar",
Effect: v1.TaintEffectNoSchedule,
Effect: api.TaintEffectNoSchedule,
TolerationSeconds: genTolerationSeconds(700),
},
{
Key: metav1.TaintNodeNotReady,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: &defaultTolerationSeconds,
},
{
Key: metav1.TaintNodeUnreachable,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: &defaultTolerationSeconds,
},
},
@ -105,31 +104,31 @@ func TestForgivenessAdmission(t *testing.T) {
},
{
description: "pod specified a toleration for taint `notReady:NoExecute`, expect add toleration for `unreachable:NoExecute`",
requestedPod: v1.Pod{
Spec: v1.PodSpec{
Tolerations: []v1.Toleration{
requestedPod: api.Pod{
Spec: api.PodSpec{
Tolerations: []api.Toleration{
{
Key: metav1.TaintNodeNotReady,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: genTolerationSeconds(700),
},
},
},
},
expectedPod: v1.Pod{
Spec: v1.PodSpec{
Tolerations: []v1.Toleration{
expectedPod: api.Pod{
Spec: api.PodSpec{
Tolerations: []api.Toleration{
{
Key: metav1.TaintNodeNotReady,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: genTolerationSeconds(700),
},
{
Key: metav1.TaintNodeUnreachable,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: &defaultTolerationSeconds,
},
},
@ -138,31 +137,31 @@ func TestForgivenessAdmission(t *testing.T) {
},
{
description: "pod specified a toleration for taint `unreachable:NoExecute`, expect add toleration for `notReady:NoExecute`",
requestedPod: v1.Pod{
Spec: v1.PodSpec{
Tolerations: []v1.Toleration{
requestedPod: api.Pod{
Spec: api.PodSpec{
Tolerations: []api.Toleration{
{
Key: metav1.TaintNodeUnreachable,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: genTolerationSeconds(700),
},
},
},
},
expectedPod: v1.Pod{
Spec: v1.PodSpec{
Tolerations: []v1.Toleration{
expectedPod: api.Pod{
Spec: api.PodSpec{
Tolerations: []api.Toleration{
{
Key: metav1.TaintNodeUnreachable,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: genTolerationSeconds(700),
},
{
Key: metav1.TaintNodeNotReady,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: &defaultTolerationSeconds,
},
},
@ -171,37 +170,37 @@ func TestForgivenessAdmission(t *testing.T) {
},
{
description: "pod specified tolerations for both `notread:NoExecute` and `unreachable:NoExecute`, expect no change",
requestedPod: v1.Pod{
Spec: v1.PodSpec{
Tolerations: []v1.Toleration{
requestedPod: api.Pod{
Spec: api.PodSpec{
Tolerations: []api.Toleration{
{
Key: metav1.TaintNodeNotReady,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: genTolerationSeconds(700),
},
{
Key: metav1.TaintNodeUnreachable,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: genTolerationSeconds(700),
},
},
},
},
expectedPod: v1.Pod{
Spec: v1.PodSpec{
Tolerations: []v1.Toleration{
expectedPod: api.Pod{
Spec: api.PodSpec{
Tolerations: []api.Toleration{
{
Key: metav1.TaintNodeNotReady,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: genTolerationSeconds(700),
},
{
Key: metav1.TaintNodeUnreachable,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: genTolerationSeconds(700),
},
},
@ -210,29 +209,29 @@ func TestForgivenessAdmission(t *testing.T) {
},
{
description: "pod specified toleration for taint `unreachable`, expect add toleration for `notReady:NoExecute`",
requestedPod: v1.Pod{
Spec: v1.PodSpec{
Tolerations: []v1.Toleration{
requestedPod: api.Pod{
Spec: api.PodSpec{
Tolerations: []api.Toleration{
{
Key: metav1.TaintNodeUnreachable,
Operator: v1.TolerationOpExists,
Operator: api.TolerationOpExists,
TolerationSeconds: genTolerationSeconds(700),
},
},
},
},
expectedPod: v1.Pod{
Spec: v1.PodSpec{
Tolerations: []v1.Toleration{
expectedPod: api.Pod{
Spec: api.PodSpec{
Tolerations: []api.Toleration{
{
Key: metav1.TaintNodeUnreachable,
Operator: v1.TolerationOpExists,
Operator: api.TolerationOpExists,
TolerationSeconds: genTolerationSeconds(700),
},
{
Key: metav1.TaintNodeNotReady,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
Operator: api.TolerationOpExists,
Effect: api.TaintEffectNoExecute,
TolerationSeconds: genTolerationSeconds(300),
},
},
@ -241,18 +240,18 @@ func TestForgivenessAdmission(t *testing.T) {
},
{
description: "pod has wildcard toleration for all kind of taints, expect no change",
requestedPod: v1.Pod{
Spec: v1.PodSpec{
Tolerations: []v1.Toleration{
{Operator: v1.TolerationOpExists, TolerationSeconds: genTolerationSeconds(700)},
requestedPod: api.Pod{
Spec: api.PodSpec{
Tolerations: []api.Toleration{
{Operator: api.TolerationOpExists, TolerationSeconds: genTolerationSeconds(700)},
},
},
},
expectedPod: v1.Pod{
Spec: v1.PodSpec{
Tolerations: []v1.Toleration{
expectedPod: api.Pod{
Spec: api.PodSpec{
Tolerations: []api.Toleration{
{
Operator: v1.TolerationOpExists,
Operator: api.TolerationOpExists,
TolerationSeconds: genTolerationSeconds(700),
},
},
@ -262,7 +261,7 @@ func TestForgivenessAdmission(t *testing.T) {
}
for _, test := range tests {
err := handler.Admit(admission.NewAttributesRecord(&test.requestedPod, nil, api.Kind("Pod").WithVersion("version"), "foo", "name", v1.Resource("pods").WithVersion("version"), "", "ignored", nil))
err := handler.Admit(admission.NewAttributesRecord(&test.requestedPod, nil, api.Kind("Pod").WithVersion("version"), "foo", "name", api.Resource("pods").WithVersion("version"), "", "ignored", nil))
if err != nil {
t.Errorf("[%s]: unexpected error %v for pod %+v", test.description, err, test.requestedPod)
}

104
test/integration/defaulttolerationseconds/defaulttolerationseconds_test.go Normal file
View File

@ -0,0 +1,104 @@
// +build integration,!no-etcd
/*
Copyright 2017 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package defaulttolerationseconds
import (
"testing"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
restclient "k8s.io/client-go/rest"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
"k8s.io/kubernetes/plugin/pkg/admission/defaulttolerationseconds"
"k8s.io/kubernetes/test/integration/framework"
)
func TestAdmission(t *testing.T) {
masterConfig := framework.NewMasterConfig()
masterConfig.GenericConfig.EnableProfiling = true
masterConfig.GenericConfig.EnableMetrics = true
masterConfig.GenericConfig.AdmissionControl = defaulttolerationseconds.NewDefaultTolerationSeconds()
_, s := framework.RunAMaster(masterConfig)
defer s.Close()
client := clientset.NewForConfigOrDie(&restclient.Config{Host: s.URL, ContentConfig: restclient.ContentConfig{GroupVersion: &api.Registry.GroupOrDie(v1.GroupName).GroupVersion}})
ns := framework.CreateTestingNamespace("default-toleration-seconds", s, t)
defer framework.DeleteTestingNamespace(ns, s, t)
pod := v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Namespace: ns.Name,
Name: "foo",
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: "test",
Image: "an-image",
},
},
},
}
updatedPod, err := client.Core().Pods(pod.Namespace).Create(&pod)
if err != nil {
t.Fatalf("error creating pod: %v", err)
}
var defaultSeconds int64 = 300
nodeNotReady := v1.Toleration{
Key: metav1.TaintNodeNotReady,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
TolerationSeconds: &defaultSeconds,
}
nodeUnreachable := v1.Toleration{
Key: metav1.TaintNodeUnreachable,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
TolerationSeconds: &defaultSeconds,
}
found := 0
tolerations := updatedPod.Spec.Tolerations
for i := range tolerations {
if found == 2 {
break
}
if tolerations[i].MatchToleration(&nodeNotReady) {
if api.Semantic.DeepEqual(tolerations[i], nodeNotReady) {
found++
continue
}
}
if tolerations[i].MatchToleration(&nodeUnreachable) {
if api.Semantic.DeepEqual(tolerations[i], nodeUnreachable) {
found++
continue
}
}
}
if found != 2 {
t.Fatalf("unexpected tolerations: %v\n", updatedPod.Spec.Tolerations)
}
}