mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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552 lines
18 KiB
Go
552 lines
18 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 persistentvolume
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import (
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"fmt"
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"os"
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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/api/testapi"
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"k8s.io/kubernetes/pkg/client/cache"
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"k8s.io/kubernetes/pkg/client/testing/core"
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"k8s.io/kubernetes/pkg/client/testing/fake"
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utiltesting "k8s.io/kubernetes/pkg/util/testing"
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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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clientset := fake.NewSimpleClientset()
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binder := NewPersistentVolumeClaimBinder(clientset, 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 TestClaimRace(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("claimbinder-test")
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if err != nil {
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t.Fatalf("error creating temp dir: %v", err)
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}
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defer os.RemoveAll(tmpDir)
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c1 := &api.PersistentVolumeClaim{
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ObjectMeta: api.ObjectMeta{
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Name: "c1",
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},
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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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Status: api.PersistentVolumeClaimStatus{
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Phase: api.ClaimPending,
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},
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}
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c1.ObjectMeta.SelfLink = testapi.Default.SelfLink("pvc", "")
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c2 := &api.PersistentVolumeClaim{
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ObjectMeta: api.ObjectMeta{
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Name: "c2",
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},
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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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Status: api.PersistentVolumeClaimStatus{
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Phase: api.ClaimPending,
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},
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}
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c2.ObjectMeta.SelfLink = testapi.Default.SelfLink("pvc", "")
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v := &api.PersistentVolume{
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ObjectMeta: api.ObjectMeta{
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Name: "foo",
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},
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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: fmt.Sprintf("%s/data01", tmpDir),
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},
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},
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},
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Status: api.PersistentVolumeStatus{
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Phase: api.VolumePending,
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},
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}
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volumeIndex := NewPersistentVolumeOrderedIndex()
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mockClient := &mockBinderClient{}
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plugMgr := volume.VolumePluginMgr{}
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plugMgr.InitPlugins(host_path.ProbeRecyclableVolumePlugins(newMockRecycler, volume.VolumeConfig{}), volume.NewFakeVolumeHost(tmpDir, nil, nil))
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// adds the volume to the index, making the volume available
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syncVolume(volumeIndex, mockClient, v)
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if mockClient.volume.Status.Phase != api.VolumeAvailable {
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t.Errorf("Expected phase %s but got %s", api.VolumeAvailable, mockClient.volume.Status.Phase)
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}
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if _, exists, _ := volumeIndex.Get(v); !exists {
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t.Errorf("Expected to find volume in index but it did not exist")
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}
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// an initial sync for a claim matches the volume
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err = syncClaim(volumeIndex, mockClient, c1)
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if err != nil {
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t.Errorf("Unexpected error: %v", err)
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}
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if c1.Status.Phase != api.ClaimBound {
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t.Errorf("Expected phase %s but got %s", api.ClaimBound, c1.Status.Phase)
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}
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// before the volume gets updated w/ claimRef, a 2nd claim can attempt to bind and find the same volume
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err = syncClaim(volumeIndex, mockClient, c2)
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if err != nil {
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t.Errorf("unexpected error for unmatched claim: %v", err)
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}
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if c2.Status.Phase != api.ClaimPending {
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t.Errorf("Expected phase %s but got %s", api.ClaimPending, c2.Status.Phase)
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}
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}
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func TestClaimSyncAfterVolumeProvisioning(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("claimbinder-test")
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if err != nil {
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t.Fatalf("error creating temp dir: %v", err)
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}
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defer os.RemoveAll(tmpDir)
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// Tests that binder.syncVolume will also syncClaim if the PV has completed
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// provisioning but the claim is still Pending. We want to advance to Bound
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// without having to wait until the binder's next sync period.
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claim := &api.PersistentVolumeClaim{
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ObjectMeta: api.ObjectMeta{
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Name: "foo",
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Namespace: "bar",
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Annotations: map[string]string{
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qosProvisioningKey: "foo",
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},
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},
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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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Status: api.PersistentVolumeClaimStatus{
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Phase: api.ClaimPending,
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},
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}
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claim.ObjectMeta.SelfLink = testapi.Default.SelfLink("pvc", "")
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claimRef, _ := api.GetReference(claim)
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pv := &api.PersistentVolume{
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ObjectMeta: api.ObjectMeta{
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Name: "foo",
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Annotations: map[string]string{
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pvProvisioningRequiredAnnotationKey: pvProvisioningCompletedAnnotationValue,
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},
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},
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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: fmt.Sprintf("%s/data01", tmpDir),
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},
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},
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ClaimRef: claimRef,
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},
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Status: api.PersistentVolumeStatus{
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Phase: api.VolumePending,
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},
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}
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volumeIndex := NewPersistentVolumeOrderedIndex()
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mockClient := &mockBinderClient{
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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(tmpDir, nil, nil))
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// adds the volume to the index, making the volume available.
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// pv also completed provisioning, so syncClaim should cause claim's phase to advance to Bound
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syncVolume(volumeIndex, mockClient, pv)
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if mockClient.volume.Status.Phase != api.VolumeAvailable {
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t.Errorf("Expected phase %s but got %s", api.VolumeAvailable, mockClient.volume.Status.Phase)
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}
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if mockClient.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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}
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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: "/somepath/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: "/somepath/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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codec := api.Codecs.UniversalDecoder()
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o := core.NewObjects(api.Scheme, codec)
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if err := core.AddObjectsFromPath("../../../docs/user-guide/persistent-volumes/"+name, o, codec); err != nil {
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t.Fatal(err)
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}
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clientset := &fake.Clientset{}
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clientset.AddReactor("*", "*", core.ObjectReaction(o, api.RESTMapper))
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if reflect.TypeOf(scenario.expected) == reflect.TypeOf(&api.PersistentVolumeClaim{}) {
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pvc, err := clientset.Core().PersistentVolumeClaims("ns").Get("doesntmatter")
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if err != nil {
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t.Fatalf("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 := clientset.Core().PersistentVolumes().Get("doesntmatter")
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if err != nil {
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t.Fatalf("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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tmpDir, err := utiltesting.MkTmpdir("claimbinder-test")
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if err != nil {
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t.Fatalf("error creating temp dir: %v", err)
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}
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defer os.RemoveAll(tmpDir)
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codec := api.Codecs.UniversalDecoder()
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o := core.NewObjects(api.Scheme, codec)
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if err := core.AddObjectsFromPath("../../../docs/user-guide/persistent-volumes/claims/claim-01.yaml", o, codec); err != nil {
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t.Fatal(err)
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}
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if err := core.AddObjectsFromPath("../../../docs/user-guide/persistent-volumes/volumes/local-01.yaml", o, codec); err != nil {
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t.Fatal(err)
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}
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clientset := &fake.Clientset{}
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clientset.AddReactor("*", "*", core.ObjectReaction(o, api.RESTMapper))
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pv, err := clientset.Core().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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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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pv.ObjectMeta.SelfLink = testapi.Default.SelfLink("pv", "")
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// the default value of the PV is Pending. if processed at least once, its status in etcd is Available.
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// There was a bug where only Pending volumes were being indexed and made ready for claims.
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// Test that !Pending gets correctly added
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pv.Status.Phase = api.VolumeAvailable
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claim, error := clientset.Core().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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claim.ObjectMeta.SelfLink = testapi.Default.SelfLink("pvc", "")
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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(tmpDir, nil, nil))
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recycler := &PersistentVolumeRecycler{
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kubeClient: clientset,
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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 mockClient.volume.Status.Phase != api.VolumeAvailable {
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t.Errorf("Expected phase %s but got %s", api.VolumeAvailable, mockClient.volume.Status.Phase)
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}
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// an initial sync for a claim will bind it to an unbound volume
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syncClaim(volumeIndex, mockClient, claim)
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// bind expected on pv.Spec but status update hasn't happened yet
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if mockClient.volume.Spec.ClaimRef == nil {
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t.Errorf("Expected ClaimRef but got nil for pv.Status.ClaimRef\n")
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}
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if mockClient.volume.Status.Phase != api.VolumeAvailable {
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t.Errorf("Expected phase %s but got %s", api.VolumeAvailable, mockClient.volume.Status.Phase)
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}
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if mockClient.claim.Spec.VolumeName != pv.Name {
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t.Errorf("Expected claim.Spec.VolumeName %s but got %s", mockClient.claim.Spec.VolumeName, pv.Name)
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}
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if mockClient.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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// state changes in pvc triggers sync that sets pv attributes to pvc.Status
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syncClaim(volumeIndex, mockClient, claim)
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if len(mockClient.claim.Status.AccessModes) == 0 {
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t.Errorf("Expected %d access modes but got 0", len(pv.Spec.AccessModes))
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}
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// persisting the bind to pv.Spec.ClaimRef triggers a sync
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syncVolume(volumeIndex, mockClient, mockClient.volume)
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if mockClient.volume.Status.Phase != api.VolumeBound {
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t.Errorf("Expected phase %s but got %s", api.VolumeBound, mockClient.volume.Status.Phase)
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}
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// pretend the user deleted their claim. periodic resync picks it up.
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mockClient.claim = nil
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syncVolume(volumeIndex, mockClient, mockClient.volume)
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if mockClient.volume.Status.Phase != api.VolumeReleased {
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t.Errorf("Expected phase %s but got %s", api.VolumeReleased, mockClient.volume.Status.Phase)
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}
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// released volumes with a PersistentVolumeReclaimPolicy (recycle/delete) can have further processing
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err = recycler.reclaimVolume(mockClient.volume)
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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 mockClient.volume.Status.Phase != api.VolumePending {
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t.Errorf("Expected phase %s but got %s", api.VolumePending, mockClient.volume.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, mockClient.volume)
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if mockClient.volume.Status.Phase != api.VolumeAvailable {
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t.Errorf("Expected phase %s but got %s", api.VolumeAvailable, mockClient.volume.Status.Phase)
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}
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if mockClient.volume.Spec.ClaimRef != nil {
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t.Errorf("Expected nil ClaimRef: %+v", mockClient.volume.Spec.ClaimRef)
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}
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}
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func TestCasting(t *testing.T) {
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clientset := fake.NewSimpleClientset()
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binder := NewPersistentVolumeClaimBinder(clientset, 1*time.Second)
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pv := &api.PersistentVolume{}
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unk := cache.DeletedFinalStateUnknown{}
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pvc := &api.PersistentVolumeClaim{
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ObjectMeta: api.ObjectMeta{Name: "foo"},
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Status: api.PersistentVolumeClaimStatus{Phase: api.ClaimBound},
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}
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// none of these should fail casting.
|
|
// the real test is not failing when passed DeletedFinalStateUnknown in the deleteHandler
|
|
binder.addVolume(pv)
|
|
binder.updateVolume(pv, pv)
|
|
binder.deleteVolume(pv)
|
|
binder.deleteVolume(unk)
|
|
binder.addClaim(pvc)
|
|
binder.updateClaim(pvc, pvc)
|
|
}
|
|
|
|
type mockBinderClient struct {
|
|
volume *api.PersistentVolume
|
|
claim *api.PersistentVolumeClaim
|
|
}
|
|
|
|
func (c *mockBinderClient) GetPersistentVolume(name string) (*api.PersistentVolume, error) {
|
|
return c.volume, nil
|
|
}
|
|
|
|
func (c *mockBinderClient) UpdatePersistentVolume(volume *api.PersistentVolume) (*api.PersistentVolume, error) {
|
|
c.volume = volume
|
|
return c.volume, nil
|
|
}
|
|
|
|
func (c *mockBinderClient) DeletePersistentVolume(volume *api.PersistentVolume) error {
|
|
c.volume = nil
|
|
return nil
|
|
}
|
|
|
|
func (c *mockBinderClient) UpdatePersistentVolumeStatus(volume *api.PersistentVolume) (*api.PersistentVolume, error) {
|
|
c.volume = volume
|
|
return c.volume, nil
|
|
}
|
|
|
|
func (c *mockBinderClient) GetPersistentVolumeClaim(namespace, name string) (*api.PersistentVolumeClaim, error) {
|
|
if c.claim != nil {
|
|
return c.claim, nil
|
|
} else {
|
|
return nil, errors.NewNotFound(api.Resource("persistentvolumes"), name)
|
|
}
|
|
}
|
|
|
|
func (c *mockBinderClient) UpdatePersistentVolumeClaim(claim *api.PersistentVolumeClaim) (*api.PersistentVolumeClaim, error) {
|
|
c.claim = claim
|
|
return c.claim, nil
|
|
}
|
|
|
|
func (c *mockBinderClient) UpdatePersistentVolumeClaimStatus(claim *api.PersistentVolumeClaim) (*api.PersistentVolumeClaim, error) {
|
|
c.claim = claim
|
|
return c.claim, nil
|
|
}
|
|
|
|
func newMockRecycler(spec *volume.Spec, host volume.VolumeHost, config volume.VolumeConfig) (volume.Recycler, error) {
|
|
return &mockRecycler{
|
|
path: spec.PersistentVolume.Spec.HostPath.Path,
|
|
}, nil
|
|
}
|
|
|
|
type mockRecycler struct {
|
|
path string
|
|
host volume.VolumeHost
|
|
volume.MetricsNil
|
|
}
|
|
|
|
func (r *mockRecycler) GetPath() string {
|
|
return r.path
|
|
}
|
|
|
|
func (r *mockRecycler) Recycle() error {
|
|
// return nil means recycle passed
|
|
return nil
|
|
}
|