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index_test.go
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index_test.go
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/*
Copyright 2014 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 persistentvolume
import (
"sort"
"testing"
"github.com/golang/glog"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
utilfeature "k8s.io/apiserver/pkg/util/feature"
"k8s.io/client-go/kubernetes/scheme"
ref "k8s.io/client-go/tools/reference"
"k8s.io/kubernetes/pkg/api/testapi"
"k8s.io/kubernetes/pkg/apis/core/v1/helper"
"k8s.io/kubernetes/pkg/volume"
)
func makePVC(size string, modfn func(*v1.PersistentVolumeClaim)) *v1.PersistentVolumeClaim {
pvc := v1.PersistentVolumeClaim{
ObjectMeta: metav1.ObjectMeta{
Name: "claim01",
Namespace: "myns",
},
Spec: v1.PersistentVolumeClaimSpec{
AccessModes: []v1.PersistentVolumeAccessMode{v1.ReadOnlyMany, v1.ReadWriteOnce},
Resources: v1.ResourceRequirements{
Requests: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse(size),
},
},
},
}
if modfn != nil {
modfn(&pvc)
}
return &pvc
}
func makeVolumeModePVC(size string, mode *v1.PersistentVolumeMode, modfn func(*v1.PersistentVolumeClaim)) *v1.PersistentVolumeClaim {
pvc := v1.PersistentVolumeClaim{
ObjectMeta: metav1.ObjectMeta{
Name: "claim01",
Namespace: "myns",
},
Spec: v1.PersistentVolumeClaimSpec{
VolumeMode: mode,
AccessModes: []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce},
Resources: v1.ResourceRequirements{
Requests: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse(size),
},
},
},
}
if modfn != nil {
modfn(&pvc)
}
return &pvc
}
func TestMatchVolume(t *testing.T) {
volList := newPersistentVolumeOrderedIndex()
for _, pv := range createTestVolumes() {
volList.store.Add(pv)
}
scenarios := map[string]struct {
expectedMatch string
claim *v1.PersistentVolumeClaim
}{
"successful-match-gce-10": {
expectedMatch: "gce-pd-10",
claim: makePVC("8G", nil),
},
"successful-match-nfs-5": {
expectedMatch: "nfs-5",
claim: makePVC("5G", func(pvc *v1.PersistentVolumeClaim) {
pvc.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadOnlyMany, v1.ReadWriteOnce, v1.ReadWriteMany}
}),
},
"successful-skip-1g-bound-volume": {
expectedMatch: "gce-pd-5",
claim: makePVC("1G", nil),
},
"successful-no-match": {
expectedMatch: "",
claim: makePVC("999G", nil),
},
"successful-no-match-due-to-label": {
expectedMatch: "",
claim: makePVC("999G", func(pvc *v1.PersistentVolumeClaim) {
pvc.Spec.Selector = &metav1.LabelSelector{
MatchLabels: map[string]string{
"should-not-exist": "true",
},
}
}),
},
"successful-no-match-due-to-size-constraint-with-label-selector": {
expectedMatch: "",
claim: makePVC("20000G", func(pvc *v1.PersistentVolumeClaim) {
pvc.Spec.Selector = &metav1.LabelSelector{
MatchLabels: map[string]string{
"should-exist": "true",
},
}
pvc.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadOnlyMany, v1.ReadWriteOnce}
}),
},
"successful-match-due-with-constraint-and-label-selector": {
expectedMatch: "gce-pd-2",
claim: makePVC("20000G", func(pvc *v1.PersistentVolumeClaim) {
pvc.Spec.Selector = &metav1.LabelSelector{
MatchLabels: map[string]string{
"should-exist": "true",
},
}
pvc.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}
}),
},
"successful-match-with-class": {
expectedMatch: "gce-pd-silver1",
claim: makePVC("1G", func(pvc *v1.PersistentVolumeClaim) {
pvc.Spec.Selector = &metav1.LabelSelector{
MatchLabels: map[string]string{
"should-exist": "true",
},
}
pvc.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}
pvc.Spec.StorageClassName = &classSilver
}),
},
"successful-match-with-class-and-labels": {
expectedMatch: "gce-pd-silver2",
claim: makePVC("1G", func(pvc *v1.PersistentVolumeClaim) {
pvc.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}
pvc.Spec.StorageClassName = &classSilver
}),
},
"successful-match-very-large": {
expectedMatch: "local-pd-very-large",
// we keep the pvc size less than int64 so that in case the pv overflows
// the pvc does not overflow equally and give us false matching signals.
claim: makePVC("1E", func(pvc *v1.PersistentVolumeClaim) {
pvc.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}
pvc.Spec.StorageClassName = &classLarge
}),
},
"successful-match-exact-extremely-large": {
expectedMatch: "local-pd-extremely-large",
claim: makePVC("800E", func(pvc *v1.PersistentVolumeClaim) {
pvc.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}
pvc.Spec.StorageClassName = &classLarge
}),
},
"successful-no-match-way-too-large": {
expectedMatch: "",
claim: makePVC("950E", func(pvc *v1.PersistentVolumeClaim) {
pvc.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}
pvc.Spec.StorageClassName = &classLarge
}),
},
}
for name, scenario := range scenarios {
volume, err := volList.findBestMatchForClaim(scenario.claim, false)
if err != nil {
t.Errorf("Unexpected error matching volume by claim: %v", err)
}
if len(scenario.expectedMatch) != 0 && volume == nil {
t.Errorf("Expected match but received nil volume for scenario: %s", name)
}
if len(scenario.expectedMatch) != 0 && volume != nil && string(volume.UID) != scenario.expectedMatch {
t.Errorf("Expected %s but got volume %s in scenario %s", scenario.expectedMatch, volume.UID, name)
}
if len(scenario.expectedMatch) == 0 && volume != nil {
t.Errorf("Unexpected match for scenario: %s, matched with %s instead", name, volume.UID)
}
}
}
func TestMatchingWithBoundVolumes(t *testing.T) {
volumeIndex := newPersistentVolumeOrderedIndex()
// two similar volumes, one is bound
pv1 := &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
UID: "gce-pd-1",
Name: "gce001",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("1G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce, v1.ReadOnlyMany},
// this one we're pretending is already bound
ClaimRef: &v1.ObjectReference{UID: "abc123"},
},
}
pv2 := &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
UID: "gce-pd-2",
Name: "gce002",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("1G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce, v1.ReadOnlyMany},
},
}
volumeIndex.store.Add(pv1)
volumeIndex.store.Add(pv2)
claim := &v1.PersistentVolumeClaim{
ObjectMeta: metav1.ObjectMeta{
Name: "claim01",
Namespace: "myns",
},
Spec: v1.PersistentVolumeClaimSpec{
AccessModes: []v1.PersistentVolumeAccessMode{v1.ReadOnlyMany, v1.ReadWriteOnce},
Resources: v1.ResourceRequirements{
Requests: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("1G"),
},
},
},
}
volume, err := volumeIndex.findBestMatchForClaim(claim, false)
if err != nil {
t.Fatalf("Unexpected error matching volume by claim: %v", err)
}
if volume == nil {
t.Fatalf("Unexpected nil volume. Expected %s", pv2.Name)
}
if pv2.Name != volume.Name {
t.Errorf("Expected %s but got volume %s instead", pv2.Name, volume.Name)
}
}
func TestListByAccessModes(t *testing.T) {
volList := newPersistentVolumeOrderedIndex()
for _, pv := range createTestVolumes() {
volList.store.Add(pv)
}
volumes, err := volList.listByAccessModes([]v1.PersistentVolumeAccessMode{v1.ReadWriteOnce, v1.ReadOnlyMany})
if err != nil {
t.Error("Unexpected error retrieving volumes by access modes:", err)
}
sort.Sort(byCapacity{volumes})
for i, expected := range []string{"gce-pd-1", "gce-pd-5", "gce-pd-10"} {
if string(volumes[i].UID) != expected {
t.Errorf("Incorrect ordering of persistent volumes. Expected %s but got %s", expected, volumes[i].UID)
}
}
volumes, err = volList.listByAccessModes([]v1.PersistentVolumeAccessMode{v1.ReadWriteOnce, v1.ReadOnlyMany, v1.ReadWriteMany})
if err != nil {
t.Error("Unexpected error retrieving volumes by access modes:", err)
}
sort.Sort(byCapacity{volumes})
for i, expected := range []string{"nfs-1", "nfs-5", "nfs-10", "local-pd-very-large", "local-pd-extremely-large"} {
if string(volumes[i].UID) != expected {
t.Errorf("Incorrect ordering of persistent volumes. Expected %s but got %s", expected, volumes[i].UID)
}
}
}
func TestAllPossibleAccessModes(t *testing.T) {
index := newPersistentVolumeOrderedIndex()
for _, pv := range createTestVolumes() {
index.store.Add(pv)
}
// the mock PVs creates contain 2 types of accessmodes: RWO+ROX and RWO+ROW+RWX
possibleModes := index.allPossibleMatchingAccessModes([]v1.PersistentVolumeAccessMode{v1.ReadWriteOnce})
if len(possibleModes) != 3 {
t.Errorf("Expected 3 arrays of modes that match RWO, but got %v", len(possibleModes))
}
for _, m := range possibleModes {
if !volume.AccessModesContains(m, v1.ReadWriteOnce) {
t.Errorf("AccessModes does not contain %s", v1.ReadWriteOnce)
}
}
possibleModes = index.allPossibleMatchingAccessModes([]v1.PersistentVolumeAccessMode{v1.ReadWriteMany})
if len(possibleModes) != 1 {
t.Errorf("Expected 1 array of modes that match RWX, but got %v", len(possibleModes))
}
if !volume.AccessModesContains(possibleModes[0], v1.ReadWriteMany) {
t.Errorf("AccessModes does not contain %s", v1.ReadWriteOnce)
}
}
func TestFindingVolumeWithDifferentAccessModes(t *testing.T) {
gce := &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{UID: "001", Name: "gce"},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{v1.ResourceName(v1.ResourceStorage): resource.MustParse("10G")},
PersistentVolumeSource: v1.PersistentVolumeSource{GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{}},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
},
},
}
ebs := &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{UID: "002", Name: "ebs"},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{v1.ResourceName(v1.ResourceStorage): resource.MustParse("10G")},
PersistentVolumeSource: v1.PersistentVolumeSource{AWSElasticBlockStore: &v1.AWSElasticBlockStoreVolumeSource{}},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
},
},
}
nfs := &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{UID: "003", Name: "nfs"},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{v1.ResourceName(v1.ResourceStorage): resource.MustParse("10G")},
PersistentVolumeSource: v1.PersistentVolumeSource{NFS: &v1.NFSVolumeSource{}},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
v1.ReadWriteMany,
},
},
}
claim := &v1.PersistentVolumeClaim{
ObjectMeta: metav1.ObjectMeta{
Name: "claim01",
Namespace: "myns",
},
Spec: v1.PersistentVolumeClaimSpec{
AccessModes: []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce},
Resources: v1.ResourceRequirements{Requests: v1.ResourceList{v1.ResourceName(v1.ResourceStorage): resource.MustParse("1G")}},
},
}
index := newPersistentVolumeOrderedIndex()
index.store.Add(gce)
index.store.Add(ebs)
index.store.Add(nfs)
volume, _ := index.findBestMatchForClaim(claim, false)
if volume.Name != ebs.Name {
t.Errorf("Expected %s but got volume %s instead", ebs.Name, volume.Name)
}
claim.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce, v1.ReadOnlyMany}
volume, _ = index.findBestMatchForClaim(claim, false)
if volume.Name != gce.Name {
t.Errorf("Expected %s but got volume %s instead", gce.Name, volume.Name)
}
// order of the requested modes should not matter
claim.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadWriteMany, v1.ReadWriteOnce, v1.ReadOnlyMany}
volume, _ = index.findBestMatchForClaim(claim, false)
if volume.Name != nfs.Name {
t.Errorf("Expected %s but got volume %s instead", nfs.Name, volume.Name)
}
// fewer modes requested should still match
claim.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadWriteMany}
volume, _ = index.findBestMatchForClaim(claim, false)
if volume.Name != nfs.Name {
t.Errorf("Expected %s but got volume %s instead", nfs.Name, volume.Name)
}
// pretend the exact match is bound. should get the next level up of modes.
ebs.Spec.ClaimRef = &v1.ObjectReference{}
claim.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}
volume, _ = index.findBestMatchForClaim(claim, false)
if volume.Name != gce.Name {
t.Errorf("Expected %s but got volume %s instead", gce.Name, volume.Name)
}
// continue up the levels of modes.
gce.Spec.ClaimRef = &v1.ObjectReference{}
claim.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}
volume, _ = index.findBestMatchForClaim(claim, false)
if volume.Name != nfs.Name {
t.Errorf("Expected %s but got volume %s instead", nfs.Name, volume.Name)
}
// partial mode request
gce.Spec.ClaimRef = nil
claim.Spec.AccessModes = []v1.PersistentVolumeAccessMode{v1.ReadOnlyMany}
volume, _ = index.findBestMatchForClaim(claim, false)
if volume.Name != gce.Name {
t.Errorf("Expected %s but got volume %s instead", gce.Name, volume.Name)
}
}
func createTestVolumes() []*v1.PersistentVolume {
// these volumes are deliberately out-of-order to test indexing and sorting
return []*v1.PersistentVolume{
{
ObjectMeta: metav1.ObjectMeta{
UID: "gce-pd-10",
Name: "gce003",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("10G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
},
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "gce-pd-20",
Name: "gce004",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("20G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
},
// this one we're pretending is already bound
ClaimRef: &v1.ObjectReference{UID: "def456"},
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "nfs-5",
Name: "nfs002",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("5G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
Glusterfs: &v1.GlusterfsVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
v1.ReadWriteMany,
},
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "gce-pd-1",
Name: "gce001",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("1G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
},
// this one we're pretending is already bound
ClaimRef: &v1.ObjectReference{UID: "abc123"},
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "nfs-10",
Name: "nfs003",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("10G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
Glusterfs: &v1.GlusterfsVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
v1.ReadWriteMany,
},
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "gce-pd-5",
Name: "gce002",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("5G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
},
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "nfs-1",
Name: "nfs001",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("1G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
Glusterfs: &v1.GlusterfsVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
v1.ReadWriteMany,
},
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "gce-pd-2",
Name: "gce0022",
Labels: map[string]string{
"should-exist": "true",
},
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("20000G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
},
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "gce-pd-silver1",
Name: "gce0023",
Labels: map[string]string{
"should-exist": "true",
},
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("10000G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
},
StorageClassName: classSilver,
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "gce-pd-silver2",
Name: "gce0024",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("100G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
},
StorageClassName: classSilver,
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "gce-pd-gold",
Name: "gce0025",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("50G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
},
StorageClassName: classGold,
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "local-pd-very-large",
Name: "local001",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("200E"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
Local: &v1.LocalVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
v1.ReadWriteMany,
},
StorageClassName: classLarge,
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "local-pd-extremely-large",
Name: "local002",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("800E"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
Local: &v1.LocalVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
v1.ReadWriteMany,
},
StorageClassName: classLarge,
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "affinity-pv",
Name: "affinity001",
Annotations: getAnnotationWithNodeAffinity("key1", "value1"),
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("100G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
Local: &v1.LocalVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
},
StorageClassName: classWait,
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "affinity-pv2",
Name: "affinity002",
Annotations: getAnnotationWithNodeAffinity("key1", "value1"),
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("150G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
Local: &v1.LocalVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
},
StorageClassName: classWait,
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "affinity-prebound",
Name: "affinity003",
Annotations: getAnnotationWithNodeAffinity("key1", "value1"),
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("100G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
Local: &v1.LocalVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
},
StorageClassName: classWait,
ClaimRef: &v1.ObjectReference{Name: "claim02", Namespace: "myns"},
},
},
{
ObjectMeta: metav1.ObjectMeta{
UID: "affinity-pv3",
Name: "affinity003",
Annotations: getAnnotationWithNodeAffinity("key1", "value3"),
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("200G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
Local: &v1.LocalVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
v1.ReadOnlyMany,
},
StorageClassName: classWait,
},
},
}
}
func testVolume(name, size string) *v1.PersistentVolume {
return &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Annotations: map[string]string{},
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{v1.ResourceName(v1.ResourceStorage): resource.MustParse(size)},
PersistentVolumeSource: v1.PersistentVolumeSource{HostPath: &v1.HostPathVolumeSource{}},
AccessModes: []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce},
},
}
}
func getAnnotationWithNodeAffinity(key string, value string) map[string]string {
affinity := &v1.NodeAffinity{
RequiredDuringSchedulingIgnoredDuringExecution: &v1.NodeSelector{
NodeSelectorTerms: []v1.NodeSelectorTerm{
{
MatchExpressions: []v1.NodeSelectorRequirement{
{
Key: key,
Operator: v1.NodeSelectorOpIn,
Values: []string{value},
},
},
},
},
},
}
annotations := map[string]string{}
err := helper.StorageNodeAffinityToAlphaAnnotation(annotations, affinity)
if err != nil {
glog.Fatalf("Failed to get node affinity annotation: %v", err)
}
return annotations
}
func createVolumeModeBlockTestVolume() *v1.PersistentVolume {
blockMode := v1.PersistentVolumeBlock
return &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
UID: "local-1",
Name: "block",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("10G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
Local: &v1.LocalVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
},
VolumeMode: &blockMode,
},
}
}
func createVolumeModeFilesystemTestVolume() *v1.PersistentVolume {
filesystemMode := v1.PersistentVolumeFilesystem
return &v1.PersistentVolume{
ObjectMeta: metav1.ObjectMeta{
UID: "local-1",
Name: "block",
},
Spec: v1.PersistentVolumeSpec{
Capacity: v1.ResourceList{
v1.ResourceName(v1.ResourceStorage): resource.MustParse("10G"),
},
PersistentVolumeSource: v1.PersistentVolumeSource{
Local: &v1.LocalVolumeSource{},
},
AccessModes: []v1.PersistentVolumeAccessMode{
v1.ReadWriteOnce,
},
VolumeMode: &filesystemMode,
},
}
}
func createTestVolOrderedIndex(pv *v1.PersistentVolume) persistentVolumeOrderedIndex {
volFile := newPersistentVolumeOrderedIndex()
volFile.store.Add(pv)
return volFile
}
func toggleBlockVolumeFeature(toggleFlag bool, t *testing.T) {
if toggleFlag {
// Enable alpha feature BlockVolume
err := utilfeature.DefaultFeatureGate.Set("BlockVolume=true")
if err != nil {
t.Errorf("Failed to enable feature gate for BlockVolume: %v", err)
return
}
} else {
err := utilfeature.DefaultFeatureGate.Set("BlockVolume=false")
if err != nil {
t.Errorf("Failed to disable feature gate for BlockVolume: %v", err)
return
}
}
}
func TestAlphaVolumeModeCheck(t *testing.T) {
blockMode := v1.PersistentVolumeBlock
filesystemMode := v1.PersistentVolumeFilesystem
// If feature gate is enabled, VolumeMode will always be defaulted
// If feature gate is disabled, VolumeMode is dropped by API and ignored
scenarios := map[string]struct {
isExpectedMisMatch bool
vol *v1.PersistentVolume
pvc *v1.PersistentVolumeClaim
enableBlock bool
}{
"feature enabled - pvc block and pv filesystem": {
isExpectedMisMatch: true,
vol: createVolumeModeFilesystemTestVolume(),
pvc: makeVolumeModePVC("8G", &blockMode, nil),
enableBlock: true,
},
"feature enabled - pvc filesystem and pv block": {
isExpectedMisMatch: true,
vol: createVolumeModeBlockTestVolume(),
pvc: makeVolumeModePVC("8G", &filesystemMode, nil),
enableBlock: true,
},
"feature enabled - pvc block and pv block": {
isExpectedMisMatch: false,
vol: createVolumeModeBlockTestVolume(),
pvc: makeVolumeModePVC("8G", &blockMode, nil),
enableBlock: true,
},
"feature enabled - pvc filesystem and pv filesystem": {
isExpectedMisMatch: false,
vol: createVolumeModeFilesystemTestVolume(),
pvc: makeVolumeModePVC("8G", &filesystemMode, nil),
enableBlock: true,
},
"feature disabled - pvc block and pv filesystem": {
isExpectedMisMatch: false,
vol: createVolumeModeFilesystemTestVolume(),
pvc: makeVolumeModePVC("8G", &blockMode, nil),
enableBlock: false,
},
"feature disabled - pvc filesystem and pv block": {
isExpectedMisMatch: false,
vol: createVolumeModeBlockTestVolume(),
pvc: makeVolumeModePVC("8G", &filesystemMode, nil),
enableBlock: false,
},
"feature disabled - pvc block and pv block": {
isExpectedMisMatch: false,
vol: createVolumeModeBlockTestVolume(),
pvc: makeVolumeModePVC("8G", &blockMode, nil),
enableBlock: false,
},
"feature disabled - pvc filesystem and pv filesystem": {
isExpectedMisMatch: false,
vol: createVolumeModeFilesystemTestVolume(),
pvc: makeVolumeModePVC("8G", &filesystemMode, nil),
enableBlock: false,
},
}
for name, scenario := range scenarios {
toggleBlockVolumeFeature(scenario.enableBlock, t)
expectedMisMatch, err := checkVolumeModeMisMatches(&scenario.pvc.Spec, &scenario.vol.Spec)
if err != nil {
t.Errorf("Unexpected failure for checkVolumeModeMisMatches: %v", err)
}
// expected to match but either got an error or no returned pvmatch
if expectedMisMatch && !scenario.isExpectedMisMatch {
t.Errorf("Unexpected failure for scenario, expected not to mismatch on modes but did: %s", name)
}
if !expectedMisMatch && scenario.isExpectedMisMatch {
t.Errorf("Unexpected failure for scenario, did not mismatch on mode when expected to mismatch: %s", name)
}
}
// make sure feature gate is turned off
toggleBlockVolumeFeature(false, t)
}
func TestAlphaFilteringVolumeModes(t *testing.T) {
blockMode := v1.PersistentVolumeBlock
filesystemMode := v1.PersistentVolumeFilesystem
// If feature gate is enabled, VolumeMode will always be defaulted
// If feature gate is disabled, VolumeMode is dropped by API and ignored
scenarios := map[string]struct {
isExpectedMatch bool
vol persistentVolumeOrderedIndex
pvc *v1.PersistentVolumeClaim
enableBlock bool
}{
"1-1 feature enabled - pvc block and pv filesystem": {
isExpectedMatch: false,
vol: createTestVolOrderedIndex(createVolumeModeFilesystemTestVolume()),
pvc: makeVolumeModePVC("8G", &blockMode, nil),
enableBlock: true,
},
"1-2 feature enabled - pvc filesystem and pv block": {
isExpectedMatch: false,
vol: createTestVolOrderedIndex(createVolumeModeBlockTestVolume()),
pvc: makeVolumeModePVC("8G", &filesystemMode, nil),
enableBlock: true,
},
"1-3 feature enabled - pvc block and pv no mode with default filesystem": {
isExpectedMatch: false,
vol: createTestVolOrderedIndex(createVolumeModeFilesystemTestVolume()),
pvc: makeVolumeModePVC("8G", &blockMode, nil),
enableBlock: true,
},
"1-4 feature enabled - pvc no mode defaulted to filesystem and pv block": {
isExpectedMatch: false,
vol: createTestVolOrderedIndex(createVolumeModeBlockTestVolume()),
pvc: makeVolumeModePVC("8G", &filesystemMode, nil),
enableBlock: true,
},
"1-5 feature enabled - pvc block and pv block": {
isExpectedMatch: true,
vol: createTestVolOrderedIndex(createVolumeModeBlockTestVolume()),
pvc: makeVolumeModePVC("8G", &blockMode, nil),
enableBlock: true,
},
"1-6 feature enabled - pvc filesystem and pv filesystem": {
isExpectedMatch: true,
vol: createTestVolOrderedIndex(createVolumeModeFilesystemTestVolume()),