| /* |
| Copyright 2014 The Kubernetes Authors. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| package gcepd |
| |
| import ( |
| "fmt" |
| "os" |
| "path" |
| "reflect" |
| "sort" |
| "testing" |
| |
| "k8s.io/api/core/v1" |
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| "k8s.io/apimachinery/pkg/types" |
| "k8s.io/client-go/kubernetes/fake" |
| utiltesting "k8s.io/client-go/util/testing" |
| kubeletapis "k8s.io/kubernetes/pkg/kubelet/apis" |
| "k8s.io/kubernetes/pkg/util/mount" |
| "k8s.io/kubernetes/pkg/volume" |
| volumetest "k8s.io/kubernetes/pkg/volume/testing" |
| "k8s.io/kubernetes/pkg/volume/util" |
| volumeutil "k8s.io/kubernetes/pkg/volume/util" |
| ) |
| |
| func TestCanSupport(t *testing.T) { |
| tmpDir, err := utiltesting.MkTmpdir("gcepdTest") |
| if err != nil { |
| t.Fatalf("can't make a temp dir: %v", err) |
| } |
| defer os.RemoveAll(tmpDir) |
| plugMgr := volume.VolumePluginMgr{} |
| plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil)) |
| |
| plug, err := plugMgr.FindPluginByName("kubernetes.io/gce-pd") |
| if err != nil { |
| t.Errorf("Can't find the plugin by name") |
| } |
| if plug.GetPluginName() != "kubernetes.io/gce-pd" { |
| t.Errorf("Wrong name: %s", plug.GetPluginName()) |
| } |
| if !plug.CanSupport(&volume.Spec{Volume: &v1.Volume{VolumeSource: v1.VolumeSource{GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{}}}}) { |
| t.Errorf("Expected true") |
| } |
| if !plug.CanSupport(&volume.Spec{PersistentVolume: &v1.PersistentVolume{Spec: v1.PersistentVolumeSpec{PersistentVolumeSource: v1.PersistentVolumeSource{GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{}}}}}) { |
| t.Errorf("Expected true") |
| } |
| } |
| |
| func TestGetAccessModes(t *testing.T) { |
| tmpDir, err := utiltesting.MkTmpdir("gcepdTest") |
| if err != nil { |
| t.Fatalf("can't make a temp dir: %v", err) |
| } |
| defer os.RemoveAll(tmpDir) |
| plugMgr := volume.VolumePluginMgr{} |
| plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil)) |
| |
| plug, err := plugMgr.FindPersistentPluginByName("kubernetes.io/gce-pd") |
| if err != nil { |
| t.Errorf("Can't find the plugin by name") |
| } |
| if !volumetest.ContainsAccessMode(plug.GetAccessModes(), v1.ReadWriteOnce) || !volumetest.ContainsAccessMode(plug.GetAccessModes(), v1.ReadOnlyMany) { |
| t.Errorf("Expected two AccessModeTypes: %s and %s", v1.ReadWriteOnce, v1.ReadOnlyMany) |
| } |
| } |
| |
| type fakePDManager struct { |
| } |
| |
| func (fake *fakePDManager) CreateVolume(c *gcePersistentDiskProvisioner, node *v1.Node, allowedTopologies []v1.TopologySelectorTerm) (volumeID string, volumeSizeGB int, labels map[string]string, fstype string, err error) { |
| labels = make(map[string]string) |
| labels["fakepdmanager"] = "yes" |
| labels[kubeletapis.LabelZoneFailureDomain] = "zone1__zone2" |
| return "test-gce-volume-name", 100, labels, "", nil |
| } |
| |
| func (fake *fakePDManager) DeleteVolume(cd *gcePersistentDiskDeleter) error { |
| if cd.pdName != "test-gce-volume-name" { |
| return fmt.Errorf("Deleter got unexpected volume name: %s", cd.pdName) |
| } |
| return nil |
| } |
| |
| func getNodeSelectorRequirementWithKey(key string, term v1.NodeSelectorTerm) (*v1.NodeSelectorRequirement, error) { |
| for _, r := range term.MatchExpressions { |
| if r.Key == key { |
| return &r, nil |
| } |
| } |
| return nil, fmt.Errorf("key %s not found", key) |
| } |
| |
| func TestPlugin(t *testing.T) { |
| tmpDir, err := utiltesting.MkTmpdir("gcepdTest") |
| if err != nil { |
| t.Fatalf("can't make a temp dir: %v", err) |
| } |
| defer os.RemoveAll(tmpDir) |
| plugMgr := volume.VolumePluginMgr{} |
| plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil)) |
| |
| plug, err := plugMgr.FindPluginByName("kubernetes.io/gce-pd") |
| if err != nil { |
| t.Errorf("Can't find the plugin by name") |
| } |
| spec := &v1.Volume{ |
| Name: "vol1", |
| VolumeSource: v1.VolumeSource{ |
| GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{ |
| PDName: "pd", |
| FSType: "ext4", |
| }, |
| }, |
| } |
| fakeManager := &fakePDManager{} |
| fakeMounter := &mount.FakeMounter{} |
| mounter, err := plug.(*gcePersistentDiskPlugin).newMounterInternal(volume.NewSpecFromVolume(spec), types.UID("poduid"), fakeManager, fakeMounter) |
| if err != nil { |
| t.Errorf("Failed to make a new Mounter: %v", err) |
| } |
| if mounter == nil { |
| t.Errorf("Got a nil Mounter") |
| } |
| |
| volPath := path.Join(tmpDir, "pods/poduid/volumes/kubernetes.io~gce-pd/vol1") |
| path := mounter.GetPath() |
| if path != volPath { |
| t.Errorf("Got unexpected path: %s", path) |
| } |
| |
| if err := mounter.SetUp(nil); err != nil { |
| t.Errorf("Expected success, got: %v", err) |
| } |
| if _, err := os.Stat(path); err != nil { |
| if os.IsNotExist(err) { |
| t.Errorf("SetUp() failed, volume path not created: %s", path) |
| } else { |
| t.Errorf("SetUp() failed: %v", err) |
| } |
| } |
| |
| fakeManager = &fakePDManager{} |
| unmounter, err := plug.(*gcePersistentDiskPlugin).newUnmounterInternal("vol1", types.UID("poduid"), fakeManager, fakeMounter) |
| if err != nil { |
| t.Errorf("Failed to make a new Unmounter: %v", err) |
| } |
| if unmounter == nil { |
| t.Errorf("Got a nil Unmounter") |
| } |
| |
| if err := unmounter.TearDown(); err != nil { |
| t.Errorf("Expected success, got: %v", err) |
| } |
| if _, err := os.Stat(path); err == nil { |
| t.Errorf("TearDown() failed, volume path still exists: %s", path) |
| } else if !os.IsNotExist(err) { |
| t.Errorf("TearDown() failed: %v", err) |
| } |
| |
| // Test Provisioner |
| options := volume.VolumeOptions{ |
| PVC: volumetest.CreateTestPVC("100Mi", []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}), |
| PersistentVolumeReclaimPolicy: v1.PersistentVolumeReclaimDelete, |
| } |
| provisioner, err := plug.(*gcePersistentDiskPlugin).newProvisionerInternal(options, &fakePDManager{}) |
| if err != nil { |
| t.Errorf("Error creating new provisioner:%v", err) |
| } |
| persistentSpec, err := provisioner.Provision(nil, nil) |
| if err != nil { |
| t.Errorf("Provision() failed: %v", err) |
| } |
| |
| if persistentSpec.Spec.PersistentVolumeSource.GCEPersistentDisk.PDName != "test-gce-volume-name" { |
| t.Errorf("Provision() returned unexpected volume ID: %s", persistentSpec.Spec.PersistentVolumeSource.GCEPersistentDisk.PDName) |
| } |
| cap := persistentSpec.Spec.Capacity[v1.ResourceStorage] |
| size := cap.Value() |
| if size != 100*util.GIB { |
| t.Errorf("Provision() returned unexpected volume size: %v", size) |
| } |
| |
| if persistentSpec.Labels["fakepdmanager"] != "yes" { |
| t.Errorf("Provision() returned unexpected value for fakepdmanager: %v", persistentSpec.Labels["fakepdmanager"]) |
| } |
| |
| if persistentSpec.Labels[kubeletapis.LabelZoneFailureDomain] != "zone1__zone2" { |
| t.Errorf("Provision() returned unexpected value for %s: %v", kubeletapis.LabelZoneFailureDomain, persistentSpec.Labels[kubeletapis.LabelZoneFailureDomain]) |
| } |
| |
| if persistentSpec.Spec.NodeAffinity == nil { |
| t.Errorf("Unexpected nil NodeAffinity found") |
| } |
| if len(persistentSpec.Spec.NodeAffinity.Required.NodeSelectorTerms) != 1 { |
| t.Errorf("Unexpected number of NodeSelectorTerms") |
| } |
| term := persistentSpec.Spec.NodeAffinity.Required.NodeSelectorTerms[0] |
| if len(term.MatchExpressions) != 2 { |
| t.Errorf("Unexpected number of NodeSelectorRequirements in volume NodeAffinity: %d", len(term.MatchExpressions)) |
| } |
| r, _ := getNodeSelectorRequirementWithKey("fakepdmanager", term) |
| if r == nil || r.Values[0] != "yes" || r.Operator != v1.NodeSelectorOpIn { |
| t.Errorf("NodeSelectorRequirement fakepdmanager-in-yes not found in volume NodeAffinity") |
| } |
| zones, _ := volumeutil.ZonesToSet("zone1,zone2") |
| r, _ = getNodeSelectorRequirementWithKey(kubeletapis.LabelZoneFailureDomain, term) |
| if r == nil { |
| t.Errorf("NodeSelectorRequirement %s-in-%v not found in volume NodeAffinity", kubeletapis.LabelZoneFailureDomain, zones) |
| } |
| sort.Strings(r.Values) |
| if !reflect.DeepEqual(r.Values, zones.List()) { |
| t.Errorf("ZoneFailureDomain elements %v does not match zone labels %v", r.Values, zones) |
| } |
| |
| // Test Deleter |
| volSpec := &volume.Spec{ |
| PersistentVolume: persistentSpec, |
| } |
| deleter, err := plug.(*gcePersistentDiskPlugin).newDeleterInternal(volSpec, &fakePDManager{}) |
| if err != nil { |
| t.Errorf("Error creating new deleter:%v", err) |
| } |
| err = deleter.Delete() |
| if err != nil { |
| t.Errorf("Deleter() failed: %v", err) |
| } |
| } |
| |
| func TestMountOptions(t *testing.T) { |
| tmpDir, err := utiltesting.MkTmpdir("gcepdTest") |
| if err != nil { |
| t.Fatalf("can't make a temp dir: %v", err) |
| } |
| defer os.RemoveAll(tmpDir) |
| plugMgr := volume.VolumePluginMgr{} |
| plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil)) |
| |
| plug, err := plugMgr.FindPluginByName("kubernetes.io/gce-pd") |
| if err != nil { |
| t.Errorf("Can't find the plugin by name") |
| } |
| |
| pv := &v1.PersistentVolume{ |
| ObjectMeta: metav1.ObjectMeta{ |
| Name: "pvA", |
| }, |
| Spec: v1.PersistentVolumeSpec{ |
| PersistentVolumeSource: v1.PersistentVolumeSource{ |
| GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{}, |
| }, |
| ClaimRef: &v1.ObjectReference{ |
| Name: "claimA", |
| }, |
| MountOptions: []string{"_netdev"}, |
| }, |
| } |
| |
| fakeManager := &fakePDManager{} |
| fakeMounter := &mount.FakeMounter{} |
| |
| mounter, err := plug.(*gcePersistentDiskPlugin).newMounterInternal(volume.NewSpecFromPersistentVolume(pv, false), types.UID("poduid"), fakeManager, fakeMounter) |
| if err != nil { |
| t.Errorf("Failed to make a new Mounter: %v", err) |
| } |
| if mounter == nil { |
| t.Errorf("Got a nil Mounter") |
| } |
| |
| if err := mounter.SetUp(nil); err != nil { |
| t.Errorf("Expected success, got: %v", err) |
| } |
| mountOptions := fakeMounter.MountPoints[0].Opts |
| expectedMountOptions := []string{"_netdev", "bind"} |
| if !reflect.DeepEqual(mountOptions, expectedMountOptions) { |
| t.Errorf("Expected mount options to be %v got %v", expectedMountOptions, mountOptions) |
| } |
| } |
| |
| func TestPersistentClaimReadOnlyFlag(t *testing.T) { |
| pv := &v1.PersistentVolume{ |
| ObjectMeta: metav1.ObjectMeta{ |
| Name: "pvA", |
| }, |
| Spec: v1.PersistentVolumeSpec{ |
| PersistentVolumeSource: v1.PersistentVolumeSource{ |
| GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{}, |
| }, |
| ClaimRef: &v1.ObjectReference{ |
| Name: "claimA", |
| }, |
| }, |
| } |
| |
| claim := &v1.PersistentVolumeClaim{ |
| ObjectMeta: metav1.ObjectMeta{ |
| Name: "claimA", |
| Namespace: "nsA", |
| }, |
| Spec: v1.PersistentVolumeClaimSpec{ |
| VolumeName: "pvA", |
| }, |
| Status: v1.PersistentVolumeClaimStatus{ |
| Phase: v1.ClaimBound, |
| }, |
| } |
| |
| client := fake.NewSimpleClientset(pv, claim) |
| |
| tmpDir, err := utiltesting.MkTmpdir("gcepdTest") |
| if err != nil { |
| t.Fatalf("can't make a temp dir: %v", err) |
| } |
| defer os.RemoveAll(tmpDir) |
| plugMgr := volume.VolumePluginMgr{} |
| plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, client, nil)) |
| plug, _ := plugMgr.FindPluginByName(gcePersistentDiskPluginName) |
| |
| // readOnly bool is supplied by persistent-claim volume source when its mounter creates other volumes |
| spec := volume.NewSpecFromPersistentVolume(pv, true) |
| pod := &v1.Pod{ObjectMeta: metav1.ObjectMeta{UID: types.UID("poduid")}} |
| mounter, _ := plug.NewMounter(spec, pod, volume.VolumeOptions{}) |
| if mounter == nil { |
| t.Fatalf("Got a nil Mounter") |
| } |
| |
| if !mounter.GetAttributes().ReadOnly { |
| t.Errorf("Expected true for mounter.IsReadOnly") |
| } |
| } |