mirror of https://github.com/k3s-io/k3s
296 lines
8.9 KiB
Go
296 lines
8.9 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 gce_pd
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import (
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"fmt"
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"os"
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"path"
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"testing"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/resource"
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"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/fake"
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"k8s.io/kubernetes/pkg/types"
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"k8s.io/kubernetes/pkg/util/mount"
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utiltesting "k8s.io/kubernetes/pkg/util/testing"
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"k8s.io/kubernetes/pkg/volume"
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volumetest "k8s.io/kubernetes/pkg/volume/testing"
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)
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func TestCanSupport(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("gcepdTest")
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if err != nil {
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t.Fatalf("can't make a temp dir: %v", err)
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}
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defer os.RemoveAll(tmpDir)
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plugMgr := volume.VolumePluginMgr{}
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plugMgr.InitPlugins(ProbeVolumePlugins(), volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
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plug, err := plugMgr.FindPluginByName("kubernetes.io/gce-pd")
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if err != nil {
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t.Errorf("Can't find the plugin by name")
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}
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if plug.Name() != "kubernetes.io/gce-pd" {
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t.Errorf("Wrong name: %s", plug.Name())
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}
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if !plug.CanSupport(&volume.Spec{Volume: &api.Volume{VolumeSource: api.VolumeSource{GCEPersistentDisk: &api.GCEPersistentDiskVolumeSource{}}}}) {
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t.Errorf("Expected true")
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}
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if !plug.CanSupport(&volume.Spec{PersistentVolume: &api.PersistentVolume{Spec: api.PersistentVolumeSpec{PersistentVolumeSource: api.PersistentVolumeSource{GCEPersistentDisk: &api.GCEPersistentDiskVolumeSource{}}}}}) {
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t.Errorf("Expected true")
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}
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}
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func TestGetAccessModes(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("gcepdTest")
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if err != nil {
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t.Fatalf("can't make a temp dir: %v", err)
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}
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defer os.RemoveAll(tmpDir)
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plugMgr := volume.VolumePluginMgr{}
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plugMgr.InitPlugins(ProbeVolumePlugins(), volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
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plug, err := plugMgr.FindPersistentPluginByName("kubernetes.io/gce-pd")
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if err != nil {
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t.Errorf("Can't find the plugin by name")
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}
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if !contains(plug.GetAccessModes(), api.ReadWriteOnce) || !contains(plug.GetAccessModes(), api.ReadOnlyMany) {
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t.Errorf("Expected two AccessModeTypes: %s and %s", api.ReadWriteOnce, api.ReadOnlyMany)
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}
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}
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func contains(modes []api.PersistentVolumeAccessMode, mode api.PersistentVolumeAccessMode) bool {
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for _, m := range modes {
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if m == mode {
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return true
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}
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}
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return false
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}
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type fakePDManager struct {
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attachCalled bool
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detachCalled bool
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}
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// TODO(jonesdl) To fully test this, we could create a loopback device
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// and mount that instead.
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func (fake *fakePDManager) AttachAndMountDisk(b *gcePersistentDiskMounter, globalPDPath string) error {
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globalPath := makeGlobalPDName(b.plugin.host, b.pdName)
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err := os.MkdirAll(globalPath, 0750)
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if err != nil {
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return err
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}
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fake.attachCalled = true
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// Simulate the global mount so that the fakeMounter returns the
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// expected number of mounts for the attached disk.
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b.mounter.Mount(globalPath, globalPath, b.fsType, nil)
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return nil
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}
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func (fake *fakePDManager) DetachDisk(c *gcePersistentDiskUnmounter) error {
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globalPath := makeGlobalPDName(c.plugin.host, c.pdName)
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err := os.RemoveAll(globalPath)
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if err != nil {
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return err
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}
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fake.detachCalled = true
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return nil
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}
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func (fake *fakePDManager) CreateVolume(c *gcePersistentDiskProvisioner) (volumeID string, volumeSizeGB int, labels map[string]string, err error) {
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labels = make(map[string]string)
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labels["fakepdmanager"] = "yes"
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return "test-gce-volume-name", 100, labels, nil
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}
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func (fake *fakePDManager) DeleteVolume(cd *gcePersistentDiskDeleter) error {
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if cd.pdName != "test-gce-volume-name" {
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return fmt.Errorf("Deleter got unexpected volume name: %s", cd.pdName)
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}
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return nil
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}
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func TestPlugin(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("gcepdTest")
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if err != nil {
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t.Fatalf("can't make a temp dir: %v", err)
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}
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defer os.RemoveAll(tmpDir)
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plugMgr := volume.VolumePluginMgr{}
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plugMgr.InitPlugins(ProbeVolumePlugins(), volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
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plug, err := plugMgr.FindPluginByName("kubernetes.io/gce-pd")
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if err != nil {
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t.Errorf("Can't find the plugin by name")
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}
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spec := &api.Volume{
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Name: "vol1",
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VolumeSource: api.VolumeSource{
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GCEPersistentDisk: &api.GCEPersistentDiskVolumeSource{
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PDName: "pd",
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FSType: "ext4",
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},
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},
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}
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fakeManager := &fakePDManager{}
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fakeMounter := &mount.FakeMounter{}
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mounter, err := plug.(*gcePersistentDiskPlugin).newMounterInternal(volume.NewSpecFromVolume(spec), types.UID("poduid"), fakeManager, fakeMounter)
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if err != nil {
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t.Errorf("Failed to make a new Mounter: %v", err)
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}
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if mounter == nil {
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t.Errorf("Got a nil Mounter")
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}
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volPath := path.Join(tmpDir, "pods/poduid/volumes/kubernetes.io~gce-pd/vol1")
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path := mounter.GetPath()
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if path != volPath {
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t.Errorf("Got unexpected path: %s", path)
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}
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if err := mounter.SetUp(nil); err != nil {
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t.Errorf("Expected success, got: %v", err)
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}
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if _, err := os.Stat(path); err != nil {
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if os.IsNotExist(err) {
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t.Errorf("SetUp() failed, volume path not created: %s", path)
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} else {
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t.Errorf("SetUp() failed: %v", err)
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}
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}
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if _, err := os.Stat(path); err != nil {
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if os.IsNotExist(err) {
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t.Errorf("SetUp() failed, volume path not created: %s", path)
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} else {
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t.Errorf("SetUp() failed: %v", err)
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}
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}
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if !fakeManager.attachCalled {
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t.Errorf("Attach watch not called")
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}
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fakeManager = &fakePDManager{}
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unmounter, err := plug.(*gcePersistentDiskPlugin).newUnmounterInternal("vol1", types.UID("poduid"), fakeManager, fakeMounter)
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if err != nil {
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t.Errorf("Failed to make a new Unmounter: %v", err)
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}
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if unmounter == nil {
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t.Errorf("Got a nil Unmounter")
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}
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if err := unmounter.TearDown(); err != nil {
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t.Errorf("Expected success, got: %v", err)
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}
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if _, err := os.Stat(path); err == nil {
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t.Errorf("TearDown() failed, volume path still exists: %s", path)
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} else if !os.IsNotExist(err) {
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t.Errorf("SetUp() failed: %v", err)
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}
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if !fakeManager.detachCalled {
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t.Errorf("Detach watch not called")
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}
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// Test Provisioner
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cap := resource.MustParse("100Mi")
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options := volume.VolumeOptions{
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Capacity: cap,
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AccessModes: []api.PersistentVolumeAccessMode{
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api.ReadWriteOnce,
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},
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PersistentVolumeReclaimPolicy: api.PersistentVolumeReclaimDelete,
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}
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provisioner, err := plug.(*gcePersistentDiskPlugin).newProvisionerInternal(options, &fakePDManager{})
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persistentSpec, err := provisioner.Provision()
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if err != nil {
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t.Errorf("Provision() failed: %v", err)
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}
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if persistentSpec.Spec.PersistentVolumeSource.GCEPersistentDisk.PDName != "test-gce-volume-name" {
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t.Errorf("Provision() returned unexpected volume ID: %s", persistentSpec.Spec.PersistentVolumeSource.GCEPersistentDisk.PDName)
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}
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cap = persistentSpec.Spec.Capacity[api.ResourceStorage]
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size := cap.Value()
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if size != 100*1024*1024*1024 {
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t.Errorf("Provision() returned unexpected volume size: %v", size)
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}
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if persistentSpec.Labels["fakepdmanager"] != "yes" {
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t.Errorf("Provision() returned unexpected labels: %v", persistentSpec.Labels)
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}
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// Test Deleter
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volSpec := &volume.Spec{
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PersistentVolume: persistentSpec,
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}
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deleter, err := plug.(*gcePersistentDiskPlugin).newDeleterInternal(volSpec, &fakePDManager{})
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err = deleter.Delete()
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if err != nil {
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t.Errorf("Deleter() failed: %v", err)
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}
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}
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func TestPersistentClaimReadOnlyFlag(t *testing.T) {
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pv := &api.PersistentVolume{
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ObjectMeta: api.ObjectMeta{
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Name: "pvA",
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},
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Spec: api.PersistentVolumeSpec{
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PersistentVolumeSource: api.PersistentVolumeSource{
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GCEPersistentDisk: &api.GCEPersistentDiskVolumeSource{},
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},
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ClaimRef: &api.ObjectReference{
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Name: "claimA",
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},
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},
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}
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claim := &api.PersistentVolumeClaim{
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ObjectMeta: api.ObjectMeta{
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Name: "claimA",
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Namespace: "nsA",
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},
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Spec: api.PersistentVolumeClaimSpec{
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VolumeName: "pvA",
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},
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Status: api.PersistentVolumeClaimStatus{
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Phase: api.ClaimBound,
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},
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}
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client := fake.NewSimpleClientset(pv, claim)
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tmpDir, err := utiltesting.MkTmpdir("gcepdTest")
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if err != nil {
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t.Fatalf("can't make a temp dir: %v", err)
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}
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defer os.RemoveAll(tmpDir)
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plugMgr := volume.VolumePluginMgr{}
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plugMgr.InitPlugins(ProbeVolumePlugins(), volumetest.NewFakeVolumeHost(tmpDir, client, nil))
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plug, _ := plugMgr.FindPluginByName(gcePersistentDiskPluginName)
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// readOnly bool is supplied by persistent-claim volume source when its mounter creates other volumes
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spec := volume.NewSpecFromPersistentVolume(pv, true)
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pod := &api.Pod{ObjectMeta: api.ObjectMeta{UID: types.UID("poduid")}}
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mounter, _ := plug.NewMounter(spec, pod, volume.VolumeOptions{})
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if !mounter.GetAttributes().ReadOnly {
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t.Errorf("Expected true for mounter.IsReadOnly")
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}
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}
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