flocker_test.go 7.4 KB

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  1. /*
  2. Copyright 2015 The Kubernetes Authors.
  3. Licensed under the Apache License, Version 2.0 (the "License");
  4. you may not use this file except in compliance with the License.
  5. You may obtain a copy of the License at
  6. http://www.apache.org/licenses/LICENSE-2.0
  7. Unless required by applicable law or agreed to in writing, software
  8. distributed under the License is distributed on an "AS IS" BASIS,
  9. WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  10. See the License for the specific language governing permissions and
  11. limitations under the License.
  12. */
  13. package flocker
  14. import (
  15. "fmt"
  16. "os"
  17. "testing"
  18. "k8s.io/api/core/v1"
  19. "k8s.io/apimachinery/pkg/types"
  20. utiltesting "k8s.io/client-go/util/testing"
  21. "k8s.io/kubernetes/pkg/util/mount"
  22. "k8s.io/kubernetes/pkg/volume"
  23. volumetest "k8s.io/kubernetes/pkg/volume/testing"
  24. flockerapi "github.com/clusterhq/flocker-go"
  25. "github.com/stretchr/testify/assert"
  26. )
  27. const pluginName = "kubernetes.io/flocker"
  28. const datasetOneID = "11111111-1111-1111-1111-111111111100"
  29. const nodeOneID = "11111111-1111-1111-1111-111111111111"
  30. const nodeTwoID = "22222222-2222-2222-2222-222222222222"
  31. var _ flockerapi.Clientable = &fakeFlockerClient{}
  32. type fakeFlockerClient struct {
  33. DatasetID string
  34. Primary string
  35. Deleted bool
  36. Metadata map[string]string
  37. Nodes []flockerapi.NodeState
  38. Error error
  39. }
  40. func newFakeFlockerClient() *fakeFlockerClient {
  41. return &fakeFlockerClient{
  42. DatasetID: datasetOneID,
  43. Primary: nodeOneID,
  44. Deleted: false,
  45. Metadata: map[string]string{"Name": "dataset-one"},
  46. Nodes: []flockerapi.NodeState{
  47. {
  48. Host: "1.2.3.4",
  49. UUID: nodeOneID,
  50. },
  51. {
  52. Host: "4.5.6.7",
  53. UUID: nodeTwoID,
  54. },
  55. },
  56. }
  57. }
  58. func (c *fakeFlockerClient) CreateDataset(options *flockerapi.CreateDatasetOptions) (*flockerapi.DatasetState, error) {
  59. if c.Error != nil {
  60. return nil, c.Error
  61. }
  62. return &flockerapi.DatasetState{
  63. DatasetID: c.DatasetID,
  64. }, nil
  65. }
  66. func (c *fakeFlockerClient) DeleteDataset(datasetID string) error {
  67. c.DatasetID = datasetID
  68. c.Deleted = true
  69. return nil
  70. }
  71. func (c *fakeFlockerClient) GetDatasetState(datasetID string) (*flockerapi.DatasetState, error) {
  72. return &flockerapi.DatasetState{}, nil
  73. }
  74. func (c *fakeFlockerClient) GetDatasetID(metaName string) (datasetID string, err error) {
  75. if val, ok := c.Metadata["Name"]; !ok {
  76. return val, nil
  77. }
  78. return "", fmt.Errorf("No dataset with metadata X found")
  79. }
  80. func (c *fakeFlockerClient) GetPrimaryUUID() (primaryUUID string, err error) {
  81. return
  82. }
  83. func (c *fakeFlockerClient) ListNodes() (nodes []flockerapi.NodeState, err error) {
  84. return c.Nodes, nil
  85. }
  86. func (c *fakeFlockerClient) UpdatePrimaryForDataset(primaryUUID, datasetID string) (*flockerapi.DatasetState, error) {
  87. return &flockerapi.DatasetState{}, nil
  88. }
  89. type fakeFlockerUtil struct {
  90. }
  91. func (fake *fakeFlockerUtil) CreateVolume(c *flockerVolumeProvisioner) (datasetUUID string, volumeSizeGB int, labels map[string]string, err error) {
  92. labels = make(map[string]string)
  93. labels["fakeflockerutil"] = "yes"
  94. return "test-flocker-volume-uuid", 3, labels, nil
  95. }
  96. func (fake *fakeFlockerUtil) DeleteVolume(cd *flockerVolumeDeleter) error {
  97. if cd.datasetUUID != "test-flocker-volume-uuid" {
  98. return fmt.Errorf("Deleter got unexpected datasetUUID: %s", cd.datasetUUID)
  99. }
  100. return nil
  101. }
  102. func newInitializedVolumePlugMgr(t *testing.T) (*volume.VolumePluginMgr, string) {
  103. plugMgr := &volume.VolumePluginMgr{}
  104. dir, err := utiltesting.MkTmpdir("flocker")
  105. assert.NoError(t, err)
  106. plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(dir, nil, nil))
  107. return plugMgr, dir
  108. }
  109. func TestPlugin(t *testing.T) {
  110. tmpDir, err := utiltesting.MkTmpdir("flockerTest")
  111. if err != nil {
  112. t.Fatalf("can't make a temp dir: %v", err)
  113. }
  114. defer os.RemoveAll(tmpDir)
  115. plugMgr := volume.VolumePluginMgr{}
  116. plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
  117. plug, err := plugMgr.FindPluginByName("kubernetes.io/flocker")
  118. if err != nil {
  119. t.Errorf("Can't find the plugin by name")
  120. }
  121. spec := &v1.Volume{
  122. Name: "vol1",
  123. VolumeSource: v1.VolumeSource{
  124. Flocker: &v1.FlockerVolumeSource{
  125. DatasetUUID: "uuid1",
  126. },
  127. },
  128. }
  129. fakeManager := &fakeFlockerUtil{}
  130. fakeMounter := &mount.FakeMounter{}
  131. mounter, err := plug.(*flockerPlugin).newMounterInternal(volume.NewSpecFromVolume(spec), types.UID("poduid"), fakeManager, fakeMounter)
  132. if err != nil {
  133. t.Errorf("Failed to make a new Mounter: %v", err)
  134. }
  135. if mounter == nil {
  136. t.Errorf("Got a nil Mounter")
  137. }
  138. }
  139. func TestGetByName(t *testing.T) {
  140. assert := assert.New(t)
  141. plugMgr, dir := newInitializedVolumePlugMgr(t)
  142. defer os.RemoveAll(dir)
  143. plug, err := plugMgr.FindPluginByName(pluginName)
  144. assert.NotNil(plug, "Can't find the plugin by name")
  145. assert.NoError(err)
  146. }
  147. func TestCanSupport(t *testing.T) {
  148. assert := assert.New(t)
  149. plugMgr, dir := newInitializedVolumePlugMgr(t)
  150. defer os.RemoveAll(dir)
  151. plug, err := plugMgr.FindPluginByName(pluginName)
  152. assert.NoError(err)
  153. specs := map[*volume.Spec]bool{
  154. {
  155. Volume: &v1.Volume{
  156. VolumeSource: v1.VolumeSource{
  157. Flocker: &v1.FlockerVolumeSource{},
  158. },
  159. },
  160. }: true,
  161. {
  162. PersistentVolume: &v1.PersistentVolume{
  163. Spec: v1.PersistentVolumeSpec{
  164. PersistentVolumeSource: v1.PersistentVolumeSource{
  165. Flocker: &v1.FlockerVolumeSource{},
  166. },
  167. },
  168. },
  169. }: true,
  170. {
  171. Volume: &v1.Volume{
  172. VolumeSource: v1.VolumeSource{},
  173. },
  174. }: false,
  175. }
  176. for spec, expected := range specs {
  177. actual := plug.CanSupport(spec)
  178. assert.Equal(expected, actual)
  179. }
  180. }
  181. func TestGetFlockerVolumeSource(t *testing.T) {
  182. assert := assert.New(t)
  183. p := flockerPlugin{}
  184. spec := &volume.Spec{
  185. Volume: &v1.Volume{
  186. VolumeSource: v1.VolumeSource{
  187. Flocker: &v1.FlockerVolumeSource{},
  188. },
  189. },
  190. }
  191. vs, ro := p.getFlockerVolumeSource(spec)
  192. assert.False(ro)
  193. assert.Equal(spec.Volume.Flocker, vs)
  194. spec = &volume.Spec{
  195. PersistentVolume: &v1.PersistentVolume{
  196. Spec: v1.PersistentVolumeSpec{
  197. PersistentVolumeSource: v1.PersistentVolumeSource{
  198. Flocker: &v1.FlockerVolumeSource{},
  199. },
  200. },
  201. },
  202. }
  203. vs, ro = p.getFlockerVolumeSource(spec)
  204. assert.False(ro)
  205. assert.Equal(spec.PersistentVolume.Spec.Flocker, vs)
  206. }
  207. func TestNewMounterDatasetName(t *testing.T) {
  208. assert := assert.New(t)
  209. plugMgr, dir := newInitializedVolumePlugMgr(t)
  210. defer os.RemoveAll(dir)
  211. plug, err := plugMgr.FindPluginByName(pluginName)
  212. assert.NoError(err)
  213. spec := &volume.Spec{
  214. Volume: &v1.Volume{
  215. VolumeSource: v1.VolumeSource{
  216. Flocker: &v1.FlockerVolumeSource{
  217. DatasetName: "something",
  218. },
  219. },
  220. },
  221. }
  222. _, err = plug.NewMounter(spec, &v1.Pod{}, volume.VolumeOptions{})
  223. assert.NoError(err)
  224. }
  225. func TestNewMounterDatasetUUID(t *testing.T) {
  226. assert := assert.New(t)
  227. plugMgr, dir := newInitializedVolumePlugMgr(t)
  228. defer os.RemoveAll(dir)
  229. plug, err := plugMgr.FindPluginByName(pluginName)
  230. assert.NoError(err)
  231. spec := &volume.Spec{
  232. Volume: &v1.Volume{
  233. VolumeSource: v1.VolumeSource{
  234. Flocker: &v1.FlockerVolumeSource{
  235. DatasetUUID: "uuid1",
  236. },
  237. },
  238. },
  239. }
  240. mounter, err := plug.NewMounter(spec, &v1.Pod{}, volume.VolumeOptions{})
  241. assert.NoError(err)
  242. assert.NotNil(mounter, "got a nil mounter")
  243. }
  244. func TestNewUnmounter(t *testing.T) {
  245. t.Skip("broken")
  246. assert := assert.New(t)
  247. p := flockerPlugin{}
  248. unmounter, err := p.NewUnmounter("", types.UID(""))
  249. assert.Nil(unmounter)
  250. assert.NoError(err)
  251. }
  252. func TestIsReadOnly(t *testing.T) {
  253. b := &flockerVolumeMounter{readOnly: true}
  254. assert.True(t, b.GetAttributes().ReadOnly)
  255. }