d96c105d71
Introduce the v1alpha1 version to the Kubernetes storage API. And add a new VolumeAttachment object to that version. This object will initially be used only by the new CSI Volume Plugin. Eventually existing volume plugins can be refactored to use it too.
439 lines
12 KiB
Go
439 lines
12 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package validation
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import (
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"fmt"
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"strings"
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"testing"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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api "k8s.io/kubernetes/pkg/apis/core"
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"k8s.io/kubernetes/pkg/apis/storage"
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)
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func TestValidateStorageClass(t *testing.T) {
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deleteReclaimPolicy := api.PersistentVolumeReclaimPolicy("Delete")
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retainReclaimPolicy := api.PersistentVolumeReclaimPolicy("Retain")
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recycleReclaimPolicy := api.PersistentVolumeReclaimPolicy("Recycle")
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successCases := []storage.StorageClass{
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{
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// empty parameters
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Provisioner: "kubernetes.io/foo-provisioner",
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Parameters: map[string]string{},
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ReclaimPolicy: &deleteReclaimPolicy,
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},
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{
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// nil parameters
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Provisioner: "kubernetes.io/foo-provisioner",
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ReclaimPolicy: &deleteReclaimPolicy,
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},
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{
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// some parameters
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Provisioner: "kubernetes.io/foo-provisioner",
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Parameters: map[string]string{
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"kubernetes.io/foo-parameter": "free/form/string",
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"foo-parameter": "free-form-string",
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"foo-parameter2": "{\"embedded\": \"json\", \"with\": {\"structures\":\"inside\"}}",
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},
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ReclaimPolicy: &deleteReclaimPolicy,
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},
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{
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// retain reclaimPolicy
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Provisioner: "kubernetes.io/foo-provisioner",
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ReclaimPolicy: &retainReclaimPolicy,
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},
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}
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// Success cases are expected to pass validation.
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for k, v := range successCases {
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if errs := ValidateStorageClass(&v); len(errs) != 0 {
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t.Errorf("Expected success for %d, got %v", k, errs)
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}
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}
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// generate a map longer than maxProvisionerParameterSize
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longParameters := make(map[string]string)
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totalSize := 0
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for totalSize < maxProvisionerParameterSize {
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k := fmt.Sprintf("param/%d", totalSize)
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v := fmt.Sprintf("value-%d", totalSize)
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longParameters[k] = v
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totalSize = totalSize + len(k) + len(v)
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}
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errorCases := map[string]storage.StorageClass{
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"namespace is present": {
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ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: "bar"},
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Provisioner: "kubernetes.io/foo-provisioner",
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ReclaimPolicy: &deleteReclaimPolicy,
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},
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"invalid provisioner": {
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Provisioner: "kubernetes.io/invalid/provisioner",
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ReclaimPolicy: &deleteReclaimPolicy,
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},
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"invalid empty parameter name": {
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Provisioner: "kubernetes.io/foo",
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Parameters: map[string]string{
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"": "value",
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},
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ReclaimPolicy: &deleteReclaimPolicy,
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},
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"provisioner: Required value": {
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Provisioner: "",
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ReclaimPolicy: &deleteReclaimPolicy,
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},
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"too long parameters": {
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Provisioner: "kubernetes.io/foo",
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Parameters: longParameters,
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ReclaimPolicy: &deleteReclaimPolicy,
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},
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"invalid reclaimpolicy": {
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Provisioner: "kubernetes.io/foo",
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ReclaimPolicy: &recycleReclaimPolicy,
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},
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}
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// Error cases are not expected to pass validation.
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for testName, storageClass := range errorCases {
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if errs := ValidateStorageClass(&storageClass); len(errs) == 0 {
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t.Errorf("Expected failure for test: %s", testName)
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}
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}
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}
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func TestAlphaExpandPersistentVolumesFeatureValidation(t *testing.T) {
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deleteReclaimPolicy := api.PersistentVolumeReclaimPolicy("Delete")
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falseVar := false
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testSC := &storage.StorageClass{
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// empty parameters
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Provisioner: "kubernetes.io/foo-provisioner",
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Parameters: map[string]string{},
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ReclaimPolicy: &deleteReclaimPolicy,
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AllowVolumeExpansion: &falseVar,
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}
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// Enable alpha feature ExpandPersistentVolumes
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err := utilfeature.DefaultFeatureGate.Set("ExpandPersistentVolumes=true")
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if err != nil {
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t.Errorf("Failed to enable feature gate for ExpandPersistentVolumes: %v", err)
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return
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}
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if errs := ValidateStorageClass(testSC); len(errs) != 0 {
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t.Errorf("expected success: %v", errs)
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}
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// Disable alpha feature ExpandPersistentVolumes
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err = utilfeature.DefaultFeatureGate.Set("ExpandPersistentVolumes=false")
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if err != nil {
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t.Errorf("Failed to disable feature gate for ExpandPersistentVolumes: %v", err)
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return
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}
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if errs := ValidateStorageClass(testSC); len(errs) == 0 {
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t.Errorf("expected failure, but got no error")
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}
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}
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func TestVolumeAttachmentValidation(t *testing.T) {
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volumeName := "pv-name"
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empty := ""
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successCases := []storage.VolumeAttachment{
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{
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "myattacher",
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Source: storage.VolumeAttachmentSource{
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PersistentVolumeName: &volumeName,
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},
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NodeName: "mynode",
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{Name: "foo-with-status"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "myattacher",
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Source: storage.VolumeAttachmentSource{
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PersistentVolumeName: &volumeName,
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},
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NodeName: "mynode",
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},
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Status: storage.VolumeAttachmentStatus{
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Attached: true,
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AttachmentMetadata: map[string]string{
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"foo": "bar",
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},
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AttachError: &storage.VolumeError{
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Time: metav1.Time{},
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Message: "hello world",
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},
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DetachError: &storage.VolumeError{
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Time: metav1.Time{},
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Message: "hello world",
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},
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},
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},
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}
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for _, volumeAttachment := range successCases {
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if errs := ValidateVolumeAttachment(&volumeAttachment); len(errs) != 0 {
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t.Errorf("expected success: %v", errs)
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}
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}
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errorCases := []storage.VolumeAttachment{
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{
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// Empty attacher name
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "",
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NodeName: "mynode",
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},
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},
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{
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// Invalid attacher name
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "invalid!@#$%^&*()",
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NodeName: "mynode",
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},
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},
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{
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// Empty node name
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "myattacher",
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NodeName: "",
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},
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},
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{
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// No volume name
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "myattacher",
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NodeName: "node",
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Source: storage.VolumeAttachmentSource{
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PersistentVolumeName: nil,
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},
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},
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},
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{
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// Empty volume name
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "myattacher",
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NodeName: "node",
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Source: storage.VolumeAttachmentSource{
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PersistentVolumeName: &empty,
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},
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},
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},
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{
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// Too long error message
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "myattacher",
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NodeName: "node",
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Source: storage.VolumeAttachmentSource{
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PersistentVolumeName: &volumeName,
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},
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},
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Status: storage.VolumeAttachmentStatus{
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Attached: true,
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AttachmentMetadata: map[string]string{
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"foo": "bar",
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},
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AttachError: &storage.VolumeError{
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Time: metav1.Time{},
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Message: "hello world",
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},
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DetachError: &storage.VolumeError{
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Time: metav1.Time{},
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Message: strings.Repeat("a", maxVolumeErrorMessageSize+1),
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},
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},
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},
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{
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// Too long metadata
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "myattacher",
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NodeName: "node",
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Source: storage.VolumeAttachmentSource{
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PersistentVolumeName: &volumeName,
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},
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},
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Status: storage.VolumeAttachmentStatus{
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Attached: true,
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AttachmentMetadata: map[string]string{
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"foo": strings.Repeat("a", maxAttachedVolumeMetadataSize),
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},
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AttachError: &storage.VolumeError{
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Time: metav1.Time{},
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Message: "hello world",
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},
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DetachError: &storage.VolumeError{
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Time: metav1.Time{},
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Message: "hello world",
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},
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},
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},
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}
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for _, volumeAttachment := range errorCases {
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if errs := ValidateVolumeAttachment(&volumeAttachment); len(errs) == 0 {
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t.Errorf("Expected failure for test: %v", volumeAttachment)
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}
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}
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}
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func TestVolumeAttachmentUpdateValidation(t *testing.T) {
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volumeName := "foo"
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newVolumeName := "bar"
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old := storage.VolumeAttachment{
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "myattacher",
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Source: storage.VolumeAttachmentSource{
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PersistentVolumeName: &volumeName,
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},
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NodeName: "mynode",
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},
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}
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successCases := []storage.VolumeAttachment{
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{
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// no change
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "myattacher",
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Source: storage.VolumeAttachmentSource{
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PersistentVolumeName: &volumeName,
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},
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NodeName: "mynode",
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},
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},
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{
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// modify status
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "myattacher",
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Source: storage.VolumeAttachmentSource{
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PersistentVolumeName: &volumeName,
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},
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NodeName: "mynode",
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},
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Status: storage.VolumeAttachmentStatus{
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Attached: true,
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AttachmentMetadata: map[string]string{
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"foo": "bar",
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},
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AttachError: &storage.VolumeError{
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Time: metav1.Time{},
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Message: "hello world",
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},
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DetachError: &storage.VolumeError{
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Time: metav1.Time{},
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Message: "hello world",
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},
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},
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},
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}
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for _, volumeAttachment := range successCases {
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if errs := ValidateVolumeAttachmentUpdate(&volumeAttachment, &old); len(errs) != 0 {
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t.Errorf("expected success: %v", errs)
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}
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}
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errorCases := []storage.VolumeAttachment{
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{
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// change attacher
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "another-attacher",
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Source: storage.VolumeAttachmentSource{
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PersistentVolumeName: &volumeName,
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},
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NodeName: "mynode",
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},
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},
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{
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// change volume
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "myattacher",
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Source: storage.VolumeAttachmentSource{
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PersistentVolumeName: &newVolumeName,
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},
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NodeName: "mynode",
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},
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},
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{
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// change node
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "myattacher",
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Source: storage.VolumeAttachmentSource{
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PersistentVolumeName: &volumeName,
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},
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NodeName: "anothernode",
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},
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},
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{
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// add invalid status
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ObjectMeta: metav1.ObjectMeta{Name: "foo"},
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Spec: storage.VolumeAttachmentSpec{
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Attacher: "myattacher",
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Source: storage.VolumeAttachmentSource{
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PersistentVolumeName: &volumeName,
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},
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NodeName: "mynode",
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},
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Status: storage.VolumeAttachmentStatus{
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Attached: true,
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AttachmentMetadata: map[string]string{
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"foo": "bar",
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},
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AttachError: &storage.VolumeError{
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Time: metav1.Time{},
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Message: strings.Repeat("a", maxAttachedVolumeMetadataSize),
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},
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DetachError: &storage.VolumeError{
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Time: metav1.Time{},
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Message: "hello world",
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},
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},
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},
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}
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for _, volumeAttachment := range errorCases {
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if errs := ValidateVolumeAttachmentUpdate(&volumeAttachment, &old); len(errs) == 0 {
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t.Errorf("Expected failure for test: %v", volumeAttachment)
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}
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}
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}
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