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validation_test.go
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validation_test.go
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/*
Copyright 2016 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 validation
import (
"fmt"
"strings"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/dump"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/apimachinery/pkg/util/validation/field"
utilfeature "k8s.io/apiserver/pkg/util/feature"
featuregatetesting "k8s.io/component-base/featuregate/testing"
"k8s.io/kubernetes/pkg/api/pod"
"k8s.io/kubernetes/pkg/apis/apps"
api "k8s.io/kubernetes/pkg/apis/core"
corevalidation "k8s.io/kubernetes/pkg/apis/core/validation"
"k8s.io/kubernetes/pkg/features"
)
func intStrAddr(intOrStr intstr.IntOrString) *intstr.IntOrString {
return &intOrStr
}
type statefulSetTweak func(ss *apps.StatefulSet)
func mkStatefulSet(template *api.PodTemplate, tweaks ...statefulSetTweak) apps.StatefulSet {
ss := apps.StatefulSet{
ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
Spec: apps.StatefulSetSpec{
PodManagementPolicy: apps.OrderedReadyPodManagement,
Selector: &metav1.LabelSelector{MatchLabels: map[string]string{"a": "b"}},
Template: template.Template,
UpdateStrategy: apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
},
}
for _, tw := range tweaks {
tw(&ss)
}
return ss
}
func tweakName(name string) statefulSetTweak {
return func(ss *apps.StatefulSet) {
ss.ObjectMeta.Name = name
}
}
func tweakNamespace(ns string) statefulSetTweak {
return func(ss *apps.StatefulSet) {
ss.ObjectMeta.Namespace = ns
}
}
func tweakLabels(key string, value string) statefulSetTweak {
return func(ss *apps.StatefulSet) {
if ss.ObjectMeta.Labels == nil {
ss.ObjectMeta.Labels = map[string]string{}
}
ss.ObjectMeta.Labels[key] = value
}
}
func tweakAnnotations(key string, value string) statefulSetTweak {
return func(ss *apps.StatefulSet) {
if ss.ObjectMeta.Annotations == nil {
ss.ObjectMeta.Annotations = map[string]string{}
}
ss.ObjectMeta.Annotations[key] = value
}
}
func tweakFinalizers(finalizers ...string) statefulSetTweak {
return func(ss *apps.StatefulSet) {
ss.ObjectMeta.Finalizers = finalizers
}
}
func tweakPodManagementPolicy(policy apps.PodManagementPolicyType) statefulSetTweak {
return func(ss *apps.StatefulSet) {
ss.Spec.PodManagementPolicy = policy
}
}
func tweakReplicas(replicas int32) statefulSetTweak {
return func(ss *apps.StatefulSet) {
ss.Spec.Replicas = replicas
}
}
func tweakSelectorLabels(labels map[string]string) statefulSetTweak {
return func(ss *apps.StatefulSet) {
if labels == nil {
ss.Spec.Selector = nil
} else {
ss.Spec.Selector = &metav1.LabelSelector{MatchLabels: labels}
}
}
}
func tweakTemplateRestartPolicy(rp api.RestartPolicy) statefulSetTweak {
return func(ss *apps.StatefulSet) {
ss.Spec.Template.Spec.RestartPolicy = rp
}
}
func tweakMinReadySeconds(t int32) statefulSetTweak {
return func(ss *apps.StatefulSet) {
ss.Spec.MinReadySeconds = t
}
}
func tweakOrdinalsStart(s int32) statefulSetTweak {
return func(ss *apps.StatefulSet) {
ss.Spec.Ordinals = &apps.StatefulSetOrdinals{Start: s}
}
}
func tweakPVCTemplate(pvc ...api.PersistentVolumeClaim) statefulSetTweak {
return func(ss *apps.StatefulSet) {
ss.Spec.VolumeClaimTemplates = pvc
}
}
func tweakUpdateStrategyType(t apps.StatefulSetUpdateStrategyType) statefulSetTweak {
return func(ss *apps.StatefulSet) {
ss.Spec.UpdateStrategy.Type = t
}
}
func tweakRollingUpdatePartition(partition int32) statefulSetTweak {
return func(ss *apps.StatefulSet) {
if ss.Spec.UpdateStrategy.RollingUpdate == nil {
ss.Spec.UpdateStrategy.RollingUpdate = &apps.RollingUpdateStatefulSetStrategy{}
}
ss.Spec.UpdateStrategy.RollingUpdate.Partition = partition
}
}
func tweakMaxUnavailable(mu intstr.IntOrString) statefulSetTweak {
return func(ss *apps.StatefulSet) {
if ss.Spec.UpdateStrategy.RollingUpdate == nil {
ss.Spec.UpdateStrategy.RollingUpdate = &apps.RollingUpdateStatefulSetStrategy{}
}
ss.Spec.UpdateStrategy.RollingUpdate.MaxUnavailable = intStrAddr(mu)
}
}
func tweakPVCPolicy(policy *apps.StatefulSetPersistentVolumeClaimRetentionPolicy) statefulSetTweak {
return func(ss *apps.StatefulSet) {
ss.Spec.PersistentVolumeClaimRetentionPolicy = policy
}
}
type pvcPolicyTweak func(policy *apps.StatefulSetPersistentVolumeClaimRetentionPolicy)
func mkPVCPolicy(tweaks ...pvcPolicyTweak) *apps.StatefulSetPersistentVolumeClaimRetentionPolicy {
policy := &apps.StatefulSetPersistentVolumeClaimRetentionPolicy{}
for _, tw := range tweaks {
tw(policy)
}
return policy
}
func tweakPVCDeletedPolicy(t apps.PersistentVolumeClaimRetentionPolicyType) pvcPolicyTweak {
return func(policy *apps.StatefulSetPersistentVolumeClaimRetentionPolicy) {
policy.WhenDeleted = t
}
}
func tweakPVCScalePolicy(t apps.PersistentVolumeClaimRetentionPolicyType) pvcPolicyTweak {
return func(policy *apps.StatefulSetPersistentVolumeClaimRetentionPolicy) {
policy.WhenScaled = t
}
}
func TestValidateStatefulSet(t *testing.T) {
validLabels := map[string]string{"a": "b"}
validPodTemplate := api.PodTemplate{
Template: api.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: validLabels,
},
Spec: api.PodSpec{
RestartPolicy: api.RestartPolicyAlways,
DNSPolicy: api.DNSClusterFirst,
Containers: []api.Container{{Name: "abc", Image: "image", ImagePullPolicy: "IfNotPresent"}},
},
},
}
invalidLabels := map[string]string{"NoUppercaseOrSpecialCharsLike=Equals": "b"}
invalidPodTemplate := api.PodTemplate{
Template: api.PodTemplateSpec{
Spec: api.PodSpec{
RestartPolicy: api.RestartPolicyAlways,
DNSPolicy: api.DNSClusterFirst,
},
ObjectMeta: metav1.ObjectMeta{
Labels: invalidLabels,
},
},
}
invalidTime := int64(60)
invalidPodTemplate2 := api.PodTemplate{
Template: api.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: validLabels,
},
Spec: api.PodSpec{
RestartPolicy: api.RestartPolicyAlways,
DNSPolicy: api.DNSClusterFirst,
ActiveDeadlineSeconds: &invalidTime,
},
},
}
const enableStatefulSetAutoDeletePVC = "[enable StatefulSetAutoDeletePVC]"
type testCase struct {
name string
set apps.StatefulSet
errs field.ErrorList
}
successCases := []testCase{
{
name: "alpha name",
set: mkStatefulSet(&validPodTemplate, tweakName("abc")),
},
{
name: "alphanumeric name",
set: mkStatefulSet(&validPodTemplate, tweakName("abc-123")),
},
{
name: "parallel pod management",
set: mkStatefulSet(&validPodTemplate, tweakPodManagementPolicy(apps.ParallelPodManagement)),
},
{
name: "ordered ready pod management",
set: mkStatefulSet(&validPodTemplate, tweakPodManagementPolicy(apps.OrderedReadyPodManagement)),
},
{
name: "update strategy",
set: mkStatefulSet(&validPodTemplate,
tweakReplicas(3),
tweakUpdateStrategyType(apps.RollingUpdateStatefulSetStrategyType),
tweakRollingUpdatePartition(2),
),
},
{
name: "PVC policy " + enableStatefulSetAutoDeletePVC,
set: mkStatefulSet(&validPodTemplate,
tweakPVCPolicy(mkPVCPolicy(
tweakPVCDeletedPolicy(apps.DeletePersistentVolumeClaimRetentionPolicyType),
tweakPVCScalePolicy(apps.RetainPersistentVolumeClaimRetentionPolicyType),
)),
),
},
{
name: "maxUnavailable with parallel pod management",
set: mkStatefulSet(&validPodTemplate,
tweakReplicas(3),
tweakUpdateStrategyType(apps.RollingUpdateStatefulSetStrategyType),
tweakRollingUpdatePartition(2),
tweakMaxUnavailable(intstr.FromInt32(2)),
),
},
{
name: "ordinals.start positive value",
set: mkStatefulSet(&validPodTemplate,
tweakReplicas(3),
tweakOrdinalsStart(2),
),
},
}
errorCases := []testCase{
{
name: "zero-length name",
set: mkStatefulSet(&validPodTemplate, tweakName("")),
errs: field.ErrorList{
field.Required(field.NewPath("metadata", "name"), ""),
},
},
{
name: "name-with-dots",
set: mkStatefulSet(&validPodTemplate, tweakName("abc.123")),
errs: field.ErrorList{
field.Invalid(field.NewPath("metadata", "name"), "abc.123", ""),
},
},
{
name: "long name",
set: mkStatefulSet(&validPodTemplate, tweakName(strings.Repeat("a", 64))),
errs: field.ErrorList{
field.Invalid(field.NewPath("metadata", "name"), strings.Repeat("a", 64), ""),
},
},
{
name: "missing-namespace",
set: mkStatefulSet(&validPodTemplate, tweakNamespace("")),
errs: field.ErrorList{
field.Required(field.NewPath("metadata", "namespace"), ""),
},
},
{
name: "empty selector",
set: mkStatefulSet(&validPodTemplate, tweakSelectorLabels(nil)),
errs: field.ErrorList{
field.Required(field.NewPath("spec", "selector"), ""),
field.Invalid(field.NewPath("spec", "template", "metadata", "labels"), nil, ""), // selector is empty, labels are not, so select doesn't match labels
},
},
{
name: "selector_doesnt_match",
set: mkStatefulSet(&validPodTemplate, tweakSelectorLabels(map[string]string{"foo": "bar"})),
errs: field.ErrorList{
field.Invalid(field.NewPath("spec", "template", "metadata", "labels"), nil, ""),
},
},
{
name: "negative_replicas",
set: mkStatefulSet(&validPodTemplate, tweakReplicas(-1)),
errs: field.ErrorList{
field.Invalid(field.NewPath("spec", "replicas"), nil, ""),
},
},
{
name: "invalid_label",
set: mkStatefulSet(&validPodTemplate,
tweakLabels("NoUppercaseOrSpecialCharsLike=Equals", "bar"),
),
errs: field.ErrorList{
field.Invalid(field.NewPath("metadata", "labels"), nil, ""),
},
},
{
name: "invalid_label 2",
set: mkStatefulSet(&invalidPodTemplate,
tweakLabels("NoUppercaseOrSpecialCharsLike=Equals", "bar"),
tweakSelectorLabels(invalidLabels),
),
errs: field.ErrorList{
field.Invalid(field.NewPath("metadata", "labels"), nil, ""),
field.Invalid(field.NewPath("spec", "selector"), nil, ""),
field.Invalid(field.NewPath("spec", "selector", "matchLabels"), nil, ""),
},
},
{
name: "invalid_annotation",
set: mkStatefulSet(&validPodTemplate,
tweakAnnotations("NoUppercaseOrSpecialCharsLike=Equals", "bar"),
),
errs: field.ErrorList{
field.Invalid(field.NewPath("metadata", "annotations"), nil, ""),
},
},
{
name: "invalid restart policy 1",
set: mkStatefulSet(&validPodTemplate, tweakTemplateRestartPolicy(api.RestartPolicyOnFailure)),
errs: field.ErrorList{
field.NotSupported(field.NewPath("spec", "template", "spec", "restartPolicy"), nil, nil),
},
},
{
name: "invalid restart policy 2",
set: mkStatefulSet(&validPodTemplate, tweakTemplateRestartPolicy(api.RestartPolicyNever)),
errs: field.ErrorList{
field.NotSupported(field.NewPath("spec", "template", "spec", "restartPolicy"), nil, nil),
},
},
{
name: "empty restart policy",
set: mkStatefulSet(&validPodTemplate, tweakTemplateRestartPolicy("")),
errs: field.ErrorList{
field.NotSupported(field.NewPath("spec", "template", "spec", "restartPolicy"), nil, nil),
},
},
{
name: "invalid update strategy",
set: mkStatefulSet(&validPodTemplate,
tweakReplicas(3),
tweakUpdateStrategyType("foo"),
),
errs: field.ErrorList{
field.Invalid(field.NewPath("spec", "updateStrategy"), nil, ""),
},
},
{
name: "empty update strategy",
set: mkStatefulSet(&validPodTemplate,
tweakReplicas(3),
tweakUpdateStrategyType(""),
),
errs: field.ErrorList{
field.Required(field.NewPath("spec", "updateStrategy"), ""),
},
},
{
name: "invalid rolling update",
set: mkStatefulSet(&validPodTemplate,
tweakReplicas(3),
tweakUpdateStrategyType(apps.OnDeleteStatefulSetStrategyType),
tweakRollingUpdatePartition(1),
),
errs: field.ErrorList{
field.Invalid(field.NewPath("spec", "updateStrategy", "rollingUpdate"), nil, ""),
},
},
{
name: "negative parition",
set: mkStatefulSet(&validPodTemplate,
tweakReplicas(3),
tweakRollingUpdatePartition(-1),
),
errs: field.ErrorList{
field.Invalid(field.NewPath("spec", "updateStrategy", "rollingUpdate", "partition"), nil, ""),
},
},
{
name: "empty pod management policy",
set: mkStatefulSet(&validPodTemplate,
tweakPodManagementPolicy(""),
tweakReplicas(3),
),
errs: field.ErrorList{
field.Required(field.NewPath("spec", "podManagementPolicy"), ""),
},
},
{
name: "invalid pod management policy",
set: mkStatefulSet(&validPodTemplate, tweakPodManagementPolicy("foo")),
errs: field.ErrorList{
field.Invalid(field.NewPath("spec", "podManagementPolicy"), nil, ""),
},
},
{
name: "set active deadline seconds",
set: mkStatefulSet(&invalidPodTemplate2, tweakReplicas(3)),
errs: field.ErrorList{
field.Forbidden(field.NewPath("spec", "template", "spec", "activeDeadlineSeconds"), ""),
},
},
{
name: "empty PersistentVolumeClaimRetentionPolicy " + enableStatefulSetAutoDeletePVC,
set: mkStatefulSet(&validPodTemplate,
tweakPVCPolicy(mkPVCPolicy()),
),
errs: field.ErrorList{
field.NotSupported(field.NewPath("spec", "persistentVolumeClaimRetentionPolicy", "whenDeleted"), nil, nil),
field.NotSupported(field.NewPath("spec", "persistentVolumeClaimRetentionPolicy", "whenScaled"), nil, nil),
},
},
{
name: "invalid PersistentVolumeClaimRetentionPolicy " + enableStatefulSetAutoDeletePVC,
set: mkStatefulSet(&validPodTemplate,
tweakPVCPolicy(mkPVCPolicy(
tweakPVCDeletedPolicy("invalid-retention-policy"),
tweakPVCScalePolicy("invalid-retention-policy"),
)),
),
errs: field.ErrorList{
field.NotSupported(field.NewPath("spec", "persistentVolumeClaimRetentionPolicy", "whenDeleted"), nil, nil),
field.NotSupported(field.NewPath("spec", "persistentVolumeClaimRetentionPolicy", "whenScaled"), nil, nil),
},
},
{
name: "zero maxUnavailable",
set: mkStatefulSet(&validPodTemplate,
tweakReplicas(3),
tweakUpdateStrategyType(apps.RollingUpdateStatefulSetStrategyType),
tweakMaxUnavailable(intstr.FromInt32(0)),
),
errs: field.ErrorList{
field.Invalid(field.NewPath("spec", "updateStrategy", "rollingUpdate", "maxUnavailable"), nil, ""),
},
},
{
name: "zero percent maxUnavailable",
set: mkStatefulSet(&validPodTemplate,
tweakReplicas(3),
tweakUpdateStrategyType(apps.RollingUpdateStatefulSetStrategyType),
tweakMaxUnavailable(intstr.FromString("0%")),
),
errs: field.ErrorList{
field.Invalid(field.NewPath("spec", "updateStrategy", "rollingUpdate", "maxUnavailable"), nil, ""),
},
},
{
name: "greater than 100 percent maxUnavailable",
set: mkStatefulSet(&validPodTemplate,
tweakReplicas(3),
tweakUpdateStrategyType(apps.RollingUpdateStatefulSetStrategyType),
tweakMaxUnavailable(intstr.FromString("101%")),
),
errs: field.ErrorList{
field.Invalid(field.NewPath("spec", "updateStrategy", "rollingUpdate", "maxUnavailable"), nil, ""),
},
},
{
name: "invalid ordinals.start",
set: mkStatefulSet(&validPodTemplate,
tweakReplicas(3),
tweakOrdinalsStart(-2),
),
errs: field.ErrorList{
field.Invalid(field.NewPath("spec", "ordinals.start"), nil, ""),
},
},
}
cmpOpts := []cmp.Option{cmpopts.IgnoreFields(field.Error{}, "BadValue", "Detail"), cmpopts.SortSlices(func(a, b *field.Error) bool { return a.Error() < b.Error() })}
for _, testCase := range append(successCases, errorCases...) {
name := testCase.name
var testTitle string
if len(testCase.errs) == 0 {
testTitle = fmt.Sprintf("success case %s", name)
} else {
testTitle = fmt.Sprintf("error case %s", name)
}
t.Run(testTitle, func(t *testing.T) {
if strings.Contains(name, enableStatefulSetAutoDeletePVC) {
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.StatefulSetAutoDeletePVC, true)()
}
errs := ValidateStatefulSet(&testCase.set, pod.GetValidationOptionsFromPodTemplate(&testCase.set.Spec.Template, nil))
wantErrs := testCase.errs
if diff := cmp.Diff(wantErrs, errs, cmpOpts...); diff != "" {
t.Errorf("Unexpected validation errors (-want,+got):\n%s", diff)
}
})
}
}
// generateStatefulSetSpec generates a valid StatefulSet spec
func generateStatefulSetSpec(minSeconds int32) *apps.StatefulSetSpec {
labels := map[string]string{"a": "b"}
podTemplate := api.PodTemplate{
Template: api.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: labels,
},
Spec: api.PodSpec{
RestartPolicy: api.RestartPolicyAlways,
DNSPolicy: api.DNSClusterFirst,
Containers: []api.Container{{Name: "abc", Image: "image", ImagePullPolicy: "IfNotPresent"}},
},
},
}
ss := &apps.StatefulSetSpec{
PodManagementPolicy: "OrderedReady",
Selector: &metav1.LabelSelector{MatchLabels: labels},
Template: podTemplate.Template,
Replicas: 3,
UpdateStrategy: apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
MinReadySeconds: minSeconds,
}
return ss
}
// TestValidateStatefulSetMinReadySeconds tests the StatefulSet Spec's minReadySeconds field
func TestValidateStatefulSetMinReadySeconds(t *testing.T) {
testCases := map[string]struct {
ss *apps.StatefulSetSpec
expectErr bool
}{
"valid : minReadySeconds enabled, zero": {
ss: generateStatefulSetSpec(0),
expectErr: false,
},
"invalid : minReadySeconds enabled, negative": {
ss: generateStatefulSetSpec(-1),
expectErr: true,
},
"valid : minReadySeconds enabled, very large value": {
ss: generateStatefulSetSpec(2147483647),
expectErr: false,
},
"invalid : minReadySeconds enabled, large negative": {
ss: generateStatefulSetSpec(-2147483648),
expectErr: true,
},
}
for tcName, tc := range testCases {
t.Run(tcName, func(t *testing.T) {
errs := ValidateStatefulSetSpec(tc.ss, field.NewPath("spec", "minReadySeconds"),
corevalidation.PodValidationOptions{})
if tc.expectErr && len(errs) == 0 {
t.Errorf("Unexpected success")
}
if !tc.expectErr && len(errs) != 0 {
t.Errorf("Unexpected error(s): %v", errs)
}
})
}
}
func TestValidateStatefulSetStatus(t *testing.T) {
observedGenerationMinusOne := int64(-1)
collisionCountMinusOne := int32(-1)
tests := []struct {
name string
replicas int32
readyReplicas int32
currentReplicas int32
updatedReplicas int32
availableReplicas int32
observedGeneration *int64
collisionCount *int32
expectedErr bool
}{
{
name: "valid status",
replicas: 3,
readyReplicas: 3,
currentReplicas: 2,
updatedReplicas: 1,
expectedErr: false,
},
{
name: "invalid replicas",
replicas: -1,
readyReplicas: 3,
currentReplicas: 2,
updatedReplicas: 1,
expectedErr: true,
},
{
name: "invalid readyReplicas",
replicas: 3,
readyReplicas: -1,
currentReplicas: 2,
updatedReplicas: 1,
expectedErr: true,
},
{
name: "invalid currentReplicas",
replicas: 3,
readyReplicas: 3,
currentReplicas: -1,
updatedReplicas: 1,
expectedErr: true,
},
{
name: "invalid updatedReplicas",
replicas: 3,
readyReplicas: 3,
currentReplicas: 2,
updatedReplicas: -1,
expectedErr: true,
},
{
name: "invalid observedGeneration",
replicas: 3,
readyReplicas: 3,
currentReplicas: 2,
updatedReplicas: 1,
observedGeneration: &observedGenerationMinusOne,
expectedErr: true,
},
{
name: "invalid collisionCount",
replicas: 3,
readyReplicas: 3,
currentReplicas: 2,
updatedReplicas: 1,
collisionCount: &collisionCountMinusOne,
expectedErr: true,
},
{
name: "readyReplicas greater than replicas",
replicas: 3,
readyReplicas: 4,
currentReplicas: 2,
updatedReplicas: 1,
expectedErr: true,
},
{
name: "currentReplicas greater than replicas",
replicas: 3,
readyReplicas: 3,
currentReplicas: 4,
updatedReplicas: 1,
expectedErr: true,
},
{
name: "updatedReplicas greater than replicas",
replicas: 3,
readyReplicas: 3,
currentReplicas: 2,
updatedReplicas: 4,
expectedErr: true,
},
{
name: "invalid: number of available replicas",
replicas: 3,
readyReplicas: 3,
currentReplicas: 2,
availableReplicas: int32(-1),
expectedErr: true,
},
{
name: "invalid: available replicas greater than replicas",
replicas: 3,
readyReplicas: 3,
currentReplicas: 2,
availableReplicas: int32(4),
expectedErr: true,
},
{
name: "invalid: available replicas greater than ready replicas",
replicas: 3,
readyReplicas: 2,
currentReplicas: 2,
availableReplicas: int32(3),
expectedErr: true,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
status := apps.StatefulSetStatus{
Replicas: test.replicas,
ReadyReplicas: test.readyReplicas,
CurrentReplicas: test.currentReplicas,
UpdatedReplicas: test.updatedReplicas,
ObservedGeneration: test.observedGeneration,
CollisionCount: test.collisionCount,
AvailableReplicas: test.availableReplicas,
}
errs := ValidateStatefulSetStatus(&status, field.NewPath("status"))
if hasErr := len(errs) > 0; hasErr != test.expectedErr {
t.Errorf("%s: expected error: %t, got error: %t\nerrors: %s", test.name, test.expectedErr, hasErr, errs.ToAggregate().Error())
}
})
}
}
func TestValidateStatefulSetUpdate(t *testing.T) {
validLabels := map[string]string{"a": "b"}
validLabels2 := map[string]string{"c": "d"}
validPodTemplate := api.PodTemplate{
Template: api.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: validLabels,
},
Spec: api.PodSpec{
RestartPolicy: api.RestartPolicyAlways,
DNSPolicy: api.DNSClusterFirst,
Containers: []api.Container{{Name: "abc", Image: "image", ImagePullPolicy: "IfNotPresent"}},
},
},
}
validPodTemplate2 := api.PodTemplate{
Template: api.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: validLabels2,
},
Spec: api.PodSpec{
RestartPolicy: api.RestartPolicyAlways,
DNSPolicy: api.DNSClusterFirst,
Containers: []api.Container{{Name: "abc", Image: "image", ImagePullPolicy: "IfNotPresent"}},
},
},
}
storageClass := "storage-class1"
storageClass2 := "storage-class2"
validPVCTemplate := api.PersistentVolumeClaim{
ObjectMeta: metav1.ObjectMeta{
Name: "pvc-abc",
},
Spec: api.PersistentVolumeClaimSpec{
StorageClassName: &storageClass,
Resources: api.ResourceRequirements{
Requests: api.ResourceList{
api.ResourceStorage: resource.MustParse("1Gi"),
},
},
},
}
validPVCTemplateChangedSize := *validPVCTemplate.DeepCopy()
validPVCTemplateChangedSize.Spec.Resources.Requests[api.ResourceStorage] = resource.MustParse("2Gi")
validPVCTemplateChangedClass := *validPVCTemplate.DeepCopy()
validPVCTemplateChangedClass.Spec.StorageClassName = &storageClass2
validPVCTemplate2 := api.PersistentVolumeClaim{
ObjectMeta: metav1.ObjectMeta{
Name: "pvc-abc2",
},
Spec: api.PersistentVolumeClaimSpec{
StorageClassName: &storageClass2,
Resources: api.ResourceRequirements{
Requests: api.ResourceList{
api.ResourceStorage: resource.MustParse("2Gi"),
},
},
},
}
addContainersValidTemplate := validPodTemplate.DeepCopy()
addContainersValidTemplate.Template.Spec.Containers = append(addContainersValidTemplate.Template.Spec.Containers,
api.Container{Name: "def", Image: "image2", ImagePullPolicy: "IfNotPresent"})
if len(addContainersValidTemplate.Template.Spec.Containers) != len(validPodTemplate.Template.Spec.Containers)+1 {
t.Errorf("failure during test setup: template %v should have more containers than template %v", addContainersValidTemplate, validPodTemplate)
}
type testCase struct {
name string
old apps.StatefulSet
update apps.StatefulSet
errs field.ErrorList
}
successCases := []testCase{
{
name: "update replica count",
old: mkStatefulSet(&validPodTemplate),
update: mkStatefulSet(&validPodTemplate, tweakReplicas(3)),
},
{
name: "update containers 1",
old: mkStatefulSet(&validPodTemplate),
update: mkStatefulSet(addContainersValidTemplate),
},
{
name: "update containers 2",
old: mkStatefulSet(addContainersValidTemplate),
update: mkStatefulSet(&validPodTemplate),
},
{
name: "update containers and pvc retention policy 1",
old: mkStatefulSet(addContainersValidTemplate),
update: mkStatefulSet(&validPodTemplate,
tweakPVCPolicy(mkPVCPolicy(
tweakPVCDeletedPolicy(apps.RetainPersistentVolumeClaimRetentionPolicyType),
tweakPVCScalePolicy(apps.RetainPersistentVolumeClaimRetentionPolicyType),
)),
),
},
{
name: "update containers and pvc retention policy 2",
old: mkStatefulSet(&validPodTemplate,
tweakPVCPolicy(mkPVCPolicy(
tweakPVCScalePolicy(apps.RetainPersistentVolumeClaimRetentionPolicyType),
)),
),
update: mkStatefulSet(&validPodTemplate),
},
{
name: "update update strategy",
old: mkStatefulSet(&validPodTemplate),
update: mkStatefulSet(&validPodTemplate,
tweakUpdateStrategyType(apps.OnDeleteStatefulSetStrategyType),
),
},
{
name: "update min ready seconds 1",
old: mkStatefulSet(&validPodTemplate),
update: mkStatefulSet(&validPodTemplate, tweakMinReadySeconds(10)),
},
{
name: "update min ready seconds 2",
old: mkStatefulSet(&validPodTemplate, tweakMinReadySeconds(5)),
update: mkStatefulSet(&validPodTemplate, tweakMinReadySeconds(10)),
},
{
name: "update existing instance with now-invalid name",
old: mkStatefulSet(&validPodTemplate, tweakFinalizers("final")),
update: mkStatefulSet(&validPodTemplate, tweakFinalizers()),
},
{
name: "update existing instance with .spec.ordinals.start",
old: mkStatefulSet(&validPodTemplate),
update: mkStatefulSet(&validPodTemplate, tweakOrdinalsStart(3)),
},
}
errorCases := []testCase{
{
name: "update name",
old: mkStatefulSet(&validPodTemplate, tweakName("abc")),
update: mkStatefulSet(&validPodTemplate, tweakName("abc2")),
errs: field.ErrorList{
field.Invalid(field.NewPath("metadata", "name"), nil, ""),
},
},
{
name: "update namespace",
old: mkStatefulSet(&validPodTemplate, tweakNamespace(metav1.NamespaceDefault)),
update: mkStatefulSet(&validPodTemplate, tweakNamespace(metav1.NamespaceDefault+"1")),
errs: field.ErrorList{
field.Invalid(field.NewPath("metadata", "namespace"), nil, ""),
},
},
{
name: "update selector",
old: mkStatefulSet(&validPodTemplate, tweakSelectorLabels(validLabels)),
update: mkStatefulSet(&validPodTemplate2,
tweakSelectorLabels(validLabels2),
),
errs: field.ErrorList{
field.Forbidden(field.NewPath("spec"), ""),
},
},
{
name: "update pod management policy 1",
old: mkStatefulSet(&validPodTemplate, tweakPodManagementPolicy("")),
update: mkStatefulSet(&validPodTemplate, tweakPodManagementPolicy(apps.OrderedReadyPodManagement)),
errs: field.ErrorList{
field.Forbidden(field.NewPath("spec"), ""),
},
},
{
name: "update pod management policy 2",
old: mkStatefulSet(&validPodTemplate, tweakPodManagementPolicy(apps.ParallelPodManagement)),
update: mkStatefulSet(&validPodTemplate, tweakPodManagementPolicy(apps.OrderedReadyPodManagement)),
errs: field.ErrorList{
field.Forbidden(field.NewPath("spec"), ""),
},
},
{
name: "update to negative replicas",
old: mkStatefulSet(&validPodTemplate),
update: mkStatefulSet(&validPodTemplate, tweakReplicas(-1)),
errs: field.ErrorList{
field.Invalid(field.NewPath("spec", "replicas"), nil, ""),
},
},
{
name: "update pvc template size",
old: mkStatefulSet(&validPodTemplate, tweakPVCTemplate(validPVCTemplate)),
update: mkStatefulSet(&validPodTemplate, tweakPVCTemplate(validPVCTemplateChangedSize)),
errs: field.ErrorList{
field.Forbidden(field.NewPath("spec"), ""),
},
},
{
name: "update pvc template storage class",
old: mkStatefulSet(&validPodTemplate, tweakPVCTemplate(validPVCTemplate)),
update: mkStatefulSet(&validPodTemplate, tweakPVCTemplate(validPVCTemplateChangedClass)),
errs: field.ErrorList{
field.Forbidden(field.NewPath("spec"), ""),
},
},
{
name: "add new pvc template",
old: mkStatefulSet(&validPodTemplate, tweakPVCTemplate(validPVCTemplate)),
update: mkStatefulSet(&validPodTemplate, tweakPVCTemplate(validPVCTemplate, validPVCTemplate2)),
errs: field.ErrorList{
field.Forbidden(field.NewPath("spec"), ""),
},
},
}
cmpOpts := []cmp.Option{
cmpopts.IgnoreFields(field.Error{}, "BadValue", "Detail"),
cmpopts.SortSlices(func(a, b *field.Error) bool { return a.Error() < b.Error() }),
cmpopts.EquateEmpty(),
}
for _, testCase := range append(successCases, errorCases...) {
name := testCase.name
var testTitle string
if len(testCase.errs) == 0 {
testTitle = fmt.Sprintf("success case %s", name)
} else {
testTitle = fmt.Sprintf("error case %s", name)
}
t.Run(testTitle, func(t *testing.T) {