mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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410 lines
13 KiB
Go
410 lines
13 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors All rights reserved.
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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 volumeclaimbinder
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import (
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"reflect"
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"testing"
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"time"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/errors"
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"k8s.io/kubernetes/pkg/api/resource"
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"k8s.io/kubernetes/pkg/client/unversioned/testclient"
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"k8s.io/kubernetes/pkg/volume"
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"k8s.io/kubernetes/pkg/volume/host_path"
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)
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func TestRunStop(t *testing.T) {
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client := &testclient.Fake{}
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binder := NewPersistentVolumeClaimBinder(client, 1*time.Second)
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if len(binder.stopChannels) != 0 {
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t.Errorf("Non-running binder should not have any stopChannels. Got %v", len(binder.stopChannels))
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}
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binder.Run()
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if len(binder.stopChannels) != 2 {
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t.Errorf("Running binder should have exactly 2 stopChannels. Got %v", len(binder.stopChannels))
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}
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binder.Stop()
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if len(binder.stopChannels) != 0 {
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t.Errorf("Non-running binder should not have any stopChannels. Got %v", len(binder.stopChannels))
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}
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}
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func TestExampleObjects(t *testing.T) {
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scenarios := map[string]struct {
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expected interface{}
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}{
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"claims/claim-01.yaml": {
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expected: &api.PersistentVolumeClaim{
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Spec: api.PersistentVolumeClaimSpec{
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AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteOnce},
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Resources: api.ResourceRequirements{
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Requests: api.ResourceList{
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api.ResourceName(api.ResourceStorage): resource.MustParse("3Gi"),
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},
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},
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},
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},
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},
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"claims/claim-02.yaml": {
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expected: &api.PersistentVolumeClaim{
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Spec: api.PersistentVolumeClaimSpec{
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AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteOnce},
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Resources: api.ResourceRequirements{
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Requests: api.ResourceList{
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api.ResourceName(api.ResourceStorage): resource.MustParse("8Gi"),
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},
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},
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},
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},
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},
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"volumes/local-01.yaml": {
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expected: &api.PersistentVolume{
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Spec: api.PersistentVolumeSpec{
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AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteOnce},
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Capacity: api.ResourceList{
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api.ResourceName(api.ResourceStorage): resource.MustParse("10Gi"),
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},
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PersistentVolumeSource: api.PersistentVolumeSource{
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HostPath: &api.HostPathVolumeSource{
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Path: "/tmp/data01",
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},
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},
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},
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},
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},
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"volumes/local-02.yaml": {
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expected: &api.PersistentVolume{
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Spec: api.PersistentVolumeSpec{
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AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteOnce},
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Capacity: api.ResourceList{
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api.ResourceName(api.ResourceStorage): resource.MustParse("8Gi"),
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},
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PersistentVolumeSource: api.PersistentVolumeSource{
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HostPath: &api.HostPathVolumeSource{
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Path: "/tmp/data02",
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},
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},
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PersistentVolumeReclaimPolicy: api.PersistentVolumeReclaimRecycle,
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},
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},
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},
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}
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for name, scenario := range scenarios {
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o := testclient.NewObjects(api.Scheme, api.Scheme)
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if err := testclient.AddObjectsFromPath("../../../docs/user-guide/persistent-volumes/"+name, o, api.Scheme); err != nil {
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t.Fatal(err)
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}
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client := &testclient.Fake{}
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client.AddReactor("*", "*", testclient.ObjectReaction(o, api.RESTMapper))
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if reflect.TypeOf(scenario.expected) == reflect.TypeOf(&api.PersistentVolumeClaim{}) {
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pvc, err := client.PersistentVolumeClaims("ns").Get("doesntmatter")
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if err != nil {
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t.Errorf("Error retrieving object: %v", err)
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}
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expected := scenario.expected.(*api.PersistentVolumeClaim)
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if pvc.Spec.AccessModes[0] != expected.Spec.AccessModes[0] {
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t.Errorf("Unexpected mismatch. Got %v wanted %v", pvc.Spec.AccessModes[0], expected.Spec.AccessModes[0])
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}
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aQty := pvc.Spec.Resources.Requests[api.ResourceStorage]
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bQty := expected.Spec.Resources.Requests[api.ResourceStorage]
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aSize := aQty.Value()
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bSize := bQty.Value()
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if aSize != bSize {
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t.Errorf("Unexpected mismatch. Got %v wanted %v", aSize, bSize)
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}
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}
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if reflect.TypeOf(scenario.expected) == reflect.TypeOf(&api.PersistentVolume{}) {
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pv, err := client.PersistentVolumes().Get("doesntmatter")
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if err != nil {
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t.Errorf("Error retrieving object: %v", err)
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}
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expected := scenario.expected.(*api.PersistentVolume)
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if pv.Spec.AccessModes[0] != expected.Spec.AccessModes[0] {
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t.Errorf("Unexpected mismatch. Got %v wanted %v", pv.Spec.AccessModes[0], expected.Spec.AccessModes[0])
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}
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aQty := pv.Spec.Capacity[api.ResourceStorage]
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bQty := expected.Spec.Capacity[api.ResourceStorage]
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aSize := aQty.Value()
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bSize := bQty.Value()
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if aSize != bSize {
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t.Errorf("Unexpected mismatch. Got %v wanted %v", aSize, bSize)
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}
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if pv.Spec.HostPath.Path != expected.Spec.HostPath.Path {
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t.Errorf("Unexpected mismatch. Got %v wanted %v", pv.Spec.HostPath.Path, expected.Spec.HostPath.Path)
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}
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}
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}
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}
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func TestBindingWithExamples(t *testing.T) {
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api.ForTesting_ReferencesAllowBlankSelfLinks = true
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o := testclient.NewObjects(api.Scheme, api.Scheme)
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if err := testclient.AddObjectsFromPath("../../../docs/user-guide/persistent-volumes/claims/claim-01.yaml", o, api.Scheme); err != nil {
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t.Fatal(err)
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}
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if err := testclient.AddObjectsFromPath("../../../docs/user-guide/persistent-volumes/volumes/local-01.yaml", o, api.Scheme); err != nil {
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t.Fatal(err)
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}
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client := &testclient.Fake{}
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client.AddReactor("*", "*", testclient.ObjectReaction(o, api.RESTMapper))
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pv, err := client.PersistentVolumes().Get("any")
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pv.Spec.PersistentVolumeReclaimPolicy = api.PersistentVolumeReclaimRecycle
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if err != nil {
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t.Errorf("Unexpected error getting PV from client: %v", err)
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}
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claim, error := client.PersistentVolumeClaims("ns").Get("any")
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if error != nil {
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t.Errorf("Unexpected error getting PVC from client: %v", err)
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}
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volumeIndex := NewPersistentVolumeOrderedIndex()
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mockClient := &mockBinderClient{
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volume: pv,
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claim: claim,
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}
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plugMgr := volume.VolumePluginMgr{}
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plugMgr.InitPlugins(host_path.ProbeRecyclableVolumePlugins(newMockRecycler, volume.VolumeConfig{}), volume.NewFakeVolumeHost("/tmp/fake", nil, nil))
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recycler := &PersistentVolumeRecycler{
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kubeClient: client,
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client: mockClient,
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pluginMgr: plugMgr,
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}
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// adds the volume to the index, making the volume available
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syncVolume(volumeIndex, mockClient, pv)
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if pv.Status.Phase != api.VolumeAvailable {
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t.Errorf("Expected phase %s but got %s", api.VolumeBound, pv.Status.Phase)
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}
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// an initial sync for a claim will bind it to an unbound volume, triggers state change
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syncClaim(volumeIndex, mockClient, claim)
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// state change causes another syncClaim to update statuses
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syncClaim(volumeIndex, mockClient, claim)
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// claim updated volume's status, causing an update and syncVolume call
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syncVolume(volumeIndex, mockClient, pv)
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if pv.Spec.ClaimRef == nil {
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t.Errorf("Expected ClaimRef but got nil for pv.Status.ClaimRef: %+v\n", pv)
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}
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if pv.Status.Phase != api.VolumeBound {
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t.Errorf("Expected phase %s but got %s", api.VolumeBound, pv.Status.Phase)
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}
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if claim.Status.Phase != api.ClaimBound {
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t.Errorf("Expected phase %s but got %s", api.ClaimBound, claim.Status.Phase)
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}
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if len(claim.Status.AccessModes) != len(pv.Spec.AccessModes) {
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t.Errorf("Expected phase %s but got %s", api.ClaimBound, claim.Status.Phase)
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}
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if claim.Status.AccessModes[0] != pv.Spec.AccessModes[0] {
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t.Errorf("Expected access mode %s but got %s", claim.Status.AccessModes[0], pv.Spec.AccessModes[0])
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}
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// pretend the user deleted their claim
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mockClient.claim = nil
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syncVolume(volumeIndex, mockClient, pv)
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if pv.Status.Phase != api.VolumeReleased {
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t.Errorf("Expected phase %s but got %s", api.VolumeReleased, pv.Status.Phase)
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}
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if pv.Spec.ClaimRef == nil {
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t.Errorf("Expected non-nil ClaimRef: %+v", pv.Spec)
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}
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mockClient.volume = pv
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// released volumes with a PersistentVolumeReclaimPolicy (recycle/delete) can have further processing
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err = recycler.reclaimVolume(pv)
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if err != nil {
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t.Errorf("Unexpected error reclaiming volume: %+v", err)
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}
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if pv.Status.Phase != api.VolumePending {
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t.Errorf("Expected phase %s but got %s", api.VolumePending, pv.Status.Phase)
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}
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// after the recycling changes the phase to Pending, the binder picks up again
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// to remove any vestiges of binding and make the volume Available again
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syncVolume(volumeIndex, mockClient, pv)
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if pv.Status.Phase != api.VolumeAvailable {
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t.Errorf("Expected phase %s but got %s", api.VolumeAvailable, pv.Status.Phase)
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}
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if pv.Spec.ClaimRef != nil {
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t.Errorf("Expected nil ClaimRef: %+v", pv.Spec)
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}
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}
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func TestMissingFromIndex(t *testing.T) {
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api.ForTesting_ReferencesAllowBlankSelfLinks = true
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o := testclient.NewObjects(api.Scheme, api.Scheme)
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if err := testclient.AddObjectsFromPath("../../../docs/user-guide/persistent-volumes/claims/claim-01.yaml", o, api.Scheme); err != nil {
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t.Fatal(err)
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}
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if err := testclient.AddObjectsFromPath("../../../docs/user-guide/persistent-volumes/volumes/local-01.yaml", o, api.Scheme); err != nil {
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t.Fatal(err)
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}
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client := &testclient.Fake{}
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client.AddReactor("*", "*", testclient.ObjectReaction(o, api.RESTMapper))
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pv, err := client.PersistentVolumes().Get("any")
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if err != nil {
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t.Errorf("Unexpected error getting PV from client: %v", err)
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}
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claim, error := client.PersistentVolumeClaims("ns").Get("any")
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if error != nil {
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t.Errorf("Unexpected error getting PVC from client: %v", err)
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}
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volumeIndex := NewPersistentVolumeOrderedIndex()
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mockClient := &mockBinderClient{
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volume: pv,
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claim: claim,
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}
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// the default value of the PV is Pending.
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// if has previously been processed by the binder, it's status in etcd would be Available.
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// Only Pending volumes were being indexed and made ready for claims.
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pv.Status.Phase = api.VolumeAvailable
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// adds the volume to the index, making the volume available
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syncVolume(volumeIndex, mockClient, pv)
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if pv.Status.Phase != api.VolumeAvailable {
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t.Errorf("Expected phase %s but got %s", api.VolumeBound, pv.Status.Phase)
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}
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// an initial sync for a claim will bind it to an unbound volume, triggers state change
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err = syncClaim(volumeIndex, mockClient, claim)
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if err != nil {
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t.Fatalf("Expected Clam to be bound, instead got an error: %+v\n", err)
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}
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// state change causes another syncClaim to update statuses
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syncClaim(volumeIndex, mockClient, claim)
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// claim updated volume's status, causing an update and syncVolume call
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syncVolume(volumeIndex, mockClient, pv)
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if pv.Spec.ClaimRef == nil {
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t.Errorf("Expected ClaimRef but got nil for pv.Status.ClaimRef: %+v\n", pv)
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}
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if pv.Status.Phase != api.VolumeBound {
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t.Errorf("Expected phase %s but got %s", api.VolumeBound, pv.Status.Phase)
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}
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if claim.Status.Phase != api.ClaimBound {
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t.Errorf("Expected phase %s but got %s", api.ClaimBound, claim.Status.Phase)
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}
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if len(claim.Status.AccessModes) != len(pv.Spec.AccessModes) {
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t.Errorf("Expected phase %s but got %s", api.ClaimBound, claim.Status.Phase)
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}
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if claim.Status.AccessModes[0] != pv.Spec.AccessModes[0] {
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t.Errorf("Expected access mode %s but got %s", claim.Status.AccessModes[0], pv.Spec.AccessModes[0])
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}
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// pretend the user deleted their claim
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mockClient.claim = nil
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syncVolume(volumeIndex, mockClient, pv)
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if pv.Status.Phase != api.VolumeReleased {
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t.Errorf("Expected phase %s but got %s", api.VolumeReleased, pv.Status.Phase)
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}
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}
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type mockBinderClient struct {
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volume *api.PersistentVolume
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claim *api.PersistentVolumeClaim
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}
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func (c *mockBinderClient) GetPersistentVolume(name string) (*api.PersistentVolume, error) {
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return c.volume, nil
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}
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func (c *mockBinderClient) UpdatePersistentVolume(volume *api.PersistentVolume) (*api.PersistentVolume, error) {
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return volume, nil
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}
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func (c *mockBinderClient) DeletePersistentVolume(volume *api.PersistentVolume) error {
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c.volume = nil
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return nil
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}
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func (c *mockBinderClient) UpdatePersistentVolumeStatus(volume *api.PersistentVolume) (*api.PersistentVolume, error) {
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return volume, nil
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}
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func (c *mockBinderClient) GetPersistentVolumeClaim(namespace, name string) (*api.PersistentVolumeClaim, error) {
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if c.claim != nil {
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return c.claim, nil
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} else {
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return nil, errors.NewNotFound("persistentVolume", name)
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}
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}
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func (c *mockBinderClient) UpdatePersistentVolumeClaim(claim *api.PersistentVolumeClaim) (*api.PersistentVolumeClaim, error) {
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return claim, nil
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}
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func (c *mockBinderClient) UpdatePersistentVolumeClaimStatus(claim *api.PersistentVolumeClaim) (*api.PersistentVolumeClaim, error) {
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return claim, nil
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}
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func newMockRecycler(spec *volume.Spec, host volume.VolumeHost, config volume.VolumeConfig) (volume.Recycler, error) {
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return &mockRecycler{
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path: spec.PersistentVolume.Spec.HostPath.Path,
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}, nil
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}
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type mockRecycler struct {
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path string
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host volume.VolumeHost
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}
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func (r *mockRecycler) GetPath() string {
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return r.path
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}
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func (r *mockRecycler) Recycle() error {
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// return nil means recycle passed
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return nil
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}
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