func TestBindingWithExamples(t *testing.T) {
tmpDir, err := utiltesting.MkTmpdir("claimbinder-test")
if err != nil {
t.Fatalf("error creating temp dir: %v", err)
}
defer os.RemoveAll(tmpDir)
codec := api.Codecs.UniversalDecoder()
o := core.NewObjects(api.Scheme, codec)
if err := core.AddObjectsFromPath("../../../docs/user-guide/persistent-volumes/claims/claim-01.yaml", o, codec); err != nil {
t.Fatal(err)
}
if err := core.AddObjectsFromPath("../../../docs/user-guide/persistent-volumes/volumes/local-01.yaml", o, codec); err != nil {
t.Fatal(err)
}
clientset := &fake.Clientset{}
clientset.AddReactor("*", "*", core.ObjectReaction(o, registered.RESTMapper()))
pv, err := clientset.Core().PersistentVolumes().Get("any")
if err != nil {
t.Errorf("Unexpected error getting PV from client: %v", err)
}
pv.Spec.PersistentVolumeReclaimPolicy = api.PersistentVolumeReclaimRecycle
if err != nil {
t.Errorf("Unexpected error getting PV from client: %v", err)
}
pv.ObjectMeta.SelfLink = testapi.Default.SelfLink("pv", "")
// the default value of the PV is Pending. if processed at least once, its status in etcd is Available.
// There was a bug where only Pending volumes were being indexed and made ready for claims.
// Test that !Pending gets correctly added
pv.Status.Phase = api.VolumeAvailable
claim, error := clientset.Core().PersistentVolumeClaims("ns").Get("any")
if error != nil {
t.Errorf("Unexpected error getting PVC from client: %v", err)
}
claim.ObjectMeta.SelfLink = testapi.Default.SelfLink("pvc", "")
volumeIndex := NewPersistentVolumeOrderedIndex()
mockClient := &mockBinderClient{
volume: pv,
claim: claim,
}
plugMgr := volume.VolumePluginMgr{}
plugMgr.InitPlugins(host_path.ProbeRecyclableVolumePlugins(newMockRecycler, volume.VolumeConfig{}), volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
recycler := &PersistentVolumeRecycler{
kubeClient: clientset,
client: mockClient,
pluginMgr: plugMgr,
}
// adds the volume to the index, making the volume available
syncVolume(volumeIndex, mockClient, pv)
if mockClient.volume.Status.Phase != api.VolumeAvailable {
t.Errorf("Expected phase %s but got %s", api.VolumeAvailable, mockClient.volume.Status.Phase)
}
// add the claim to fake API server
mockClient.UpdatePersistentVolumeClaim(claim)
// an initial sync for a claim will bind it to an unbound volume
syncClaim(volumeIndex, mockClient, claim)
// bind expected on pv.Spec but status update hasn't happened yet
if mockClient.volume.Spec.ClaimRef == nil {
t.Errorf("Expected ClaimRef but got nil for pv.Status.ClaimRef\n")
}
if mockClient.volume.Status.Phase != api.VolumeAvailable {
t.Errorf("Expected phase %s but got %s", api.VolumeAvailable, mockClient.volume.Status.Phase)
}
if mockClient.claim.Spec.VolumeName != pv.Name {
t.Errorf("Expected claim.Spec.VolumeName %s but got %s", mockClient.claim.Spec.VolumeName, pv.Name)
}
if mockClient.claim.Status.Phase != api.ClaimBound {
t.Errorf("Expected phase %s but got %s", api.ClaimBound, claim.Status.Phase)
}
// state changes in pvc triggers sync that sets pv attributes to pvc.Status
syncClaim(volumeIndex, mockClient, claim)
if len(mockClient.claim.Status.AccessModes) == 0 {
t.Errorf("Expected %d access modes but got 0", len(pv.Spec.AccessModes))
}
// persisting the bind to pv.Spec.ClaimRef triggers a sync
syncVolume(volumeIndex, mockClient, mockClient.volume)
if mockClient.volume.Status.Phase != api.VolumeBound {
t.Errorf("Expected phase %s but got %s", api.VolumeBound, mockClient.volume.Status.Phase)
}
// pretend the user deleted their claim. periodic resync picks it up.
mockClient.claim = nil
syncVolume(volumeIndex, mockClient, mockClient.volume)
if mockClient.volume.Status.Phase != api.VolumeReleased {
t.Errorf("Expected phase %s but got %s", api.VolumeReleased, mockClient.volume.Status.Phase)
}
// released volumes with a PersistentVolumeReclaimPolicy (recycle/delete) can have further processing
err = recycler.reclaimVolume(mockClient.volume)
if err != nil {
t.Errorf("Unexpected error reclaiming volume: %+v", err)
}
if mockClient.volume.Status.Phase != api.VolumePending {
t.Errorf("Expected phase %s but got %s", api.VolumePending, mockClient.volume.Status.Phase)
}
// after the recycling changes the phase to Pending, the binder picks up again
// to remove any vestiges of binding and make the volume Available again
syncVolume(volumeIndex, mockClient, mockClient.volume)
if mockClient.volume.Status.Phase != api.VolumeAvailable {
t.Errorf("Expected phase %s but got %s", api.VolumeAvailable, mockClient.volume.Status.Phase)
}
if mockClient.volume.Spec.ClaimRef != nil {
t.Errorf("Expected nil ClaimRef: %+v", mockClient.volume.Spec.ClaimRef)
}
}
func TestExampleObjects(t *testing.T) {
scenarios := map[string]struct {
expected interface{}
}{
"claims/claim-01.yaml": {
expected: &api.PersistentVolumeClaim{
Spec: api.PersistentVolumeClaimSpec{
AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteOnce},
Resources: api.ResourceRequirements{
Requests: api.ResourceList{
api.ResourceName(api.ResourceStorage): resource.MustParse("3Gi"),
},
},
},
},
},
"claims/claim-02.yaml": {
expected: &api.PersistentVolumeClaim{
Spec: api.PersistentVolumeClaimSpec{
AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteOnce},
Resources: api.ResourceRequirements{
Requests: api.ResourceList{
api.ResourceName(api.ResourceStorage): resource.MustParse("8Gi"),
},
},
},
},
},
"volumes/local-01.yaml": {
expected: &api.PersistentVolume{
Spec: api.PersistentVolumeSpec{
AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteOnce},
Capacity: api.ResourceList{
api.ResourceName(api.ResourceStorage): resource.MustParse("10Gi"),
},
PersistentVolumeSource: api.PersistentVolumeSource{
HostPath: &api.HostPathVolumeSource{
Path: "/somepath/data01",
},
},
},
},
},
"volumes/local-02.yaml": {
expected: &api.PersistentVolume{
Spec: api.PersistentVolumeSpec{
AccessModes: []api.PersistentVolumeAccessMode{api.ReadWriteOnce},
Capacity: api.ResourceList{
api.ResourceName(api.ResourceStorage): resource.MustParse("8Gi"),
},
PersistentVolumeSource: api.PersistentVolumeSource{
HostPath: &api.HostPathVolumeSource{
Path: "/somepath/data02",
},
},
PersistentVolumeReclaimPolicy: api.PersistentVolumeReclaimRecycle,
},
},
},
}
for name, scenario := range scenarios {
codec := api.Codecs.UniversalDecoder()
o := core.NewObjects(api.Scheme, codec)
if err := core.AddObjectsFromPath("../../../docs/user-guide/persistent-volumes/"+name, o, codec); err != nil {
t.Fatal(err)
}
clientset := &fake.Clientset{}
clientset.AddReactor("*", "*", core.ObjectReaction(o, registered.RESTMapper()))
if reflect.TypeOf(scenario.expected) == reflect.TypeOf(&api.PersistentVolumeClaim{}) {
pvc, err := clientset.Core().PersistentVolumeClaims("ns").Get("doesntmatter")
if err != nil {
t.Fatalf("Error retrieving object: %v", err)
}
expected := scenario.expected.(*api.PersistentVolumeClaim)
if pvc.Spec.AccessModes[0] != expected.Spec.AccessModes[0] {
t.Errorf("Unexpected mismatch. Got %v wanted %v", pvc.Spec.AccessModes[0], expected.Spec.AccessModes[0])
}
aQty := pvc.Spec.Resources.Requests[api.ResourceStorage]
bQty := expected.Spec.Resources.Requests[api.ResourceStorage]
aSize := aQty.Value()
bSize := bQty.Value()
if aSize != bSize {
t.Errorf("Unexpected mismatch. Got %v wanted %v", aSize, bSize)
}
}
if reflect.TypeOf(scenario.expected) == reflect.TypeOf(&api.PersistentVolume{}) {
pv, err := clientset.Core().PersistentVolumes().Get("doesntmatter")
if err != nil {
t.Fatalf("Error retrieving object: %v", err)
}
expected := scenario.expected.(*api.PersistentVolume)
if pv.Spec.AccessModes[0] != expected.Spec.AccessModes[0] {
t.Errorf("Unexpected mismatch. Got %v wanted %v", pv.Spec.AccessModes[0], expected.Spec.AccessModes[0])
}
aQty := pv.Spec.Capacity[api.ResourceStorage]
bQty := expected.Spec.Capacity[api.ResourceStorage]
aSize := aQty.Value()
bSize := bQty.Value()
if aSize != bSize {
t.Errorf("Unexpected mismatch. Got %v wanted %v", aSize, bSize)
}
if pv.Spec.HostPath.Path != expected.Spec.HostPath.Path {
t.Errorf("Unexpected mismatch. Got %v wanted %v", pv.Spec.HostPath.Path, expected.Spec.HostPath.Path)
}
}
}
}