mirror of https://github.com/k3s-io/k3s
373 lines
9.9 KiB
Go
373 lines
9.9 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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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 fc
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import (
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"fmt"
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"os"
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"testing"
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"k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/client-go/kubernetes/fake"
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utiltesting "k8s.io/client-go/util/testing"
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"k8s.io/kubernetes/pkg/util/mount"
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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("fc_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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plugMgr := volume.VolumePluginMgr{}
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plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
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plug, err := plugMgr.FindPluginByName("kubernetes.io/fc")
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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.GetPluginName() != "kubernetes.io/fc" {
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t.Errorf("Wrong name: %s", plug.GetPluginName())
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}
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if plug.CanSupport(&volume.Spec{Volume: &v1.Volume{VolumeSource: v1.VolumeSource{}}}) {
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t.Errorf("Expected false")
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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("fc_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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plugMgr := volume.VolumePluginMgr{}
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plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
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plug, err := plugMgr.FindPersistentPluginByName("kubernetes.io/fc")
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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(), v1.ReadWriteOnce) || !contains(plug.GetAccessModes(), v1.ReadOnlyMany) {
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t.Errorf("Expected two AccessModeTypes: %s and %s", v1.ReadWriteOnce, v1.ReadOnlyMany)
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}
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}
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func contains(modes []v1.PersistentVolumeAccessMode, mode v1.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 fakeDiskManager struct {
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tmpDir string
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attachCalled bool
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detachCalled bool
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}
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func NewFakeDiskManager() *fakeDiskManager {
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return &fakeDiskManager{
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tmpDir: utiltesting.MkTmpdirOrDie("fc_test"),
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}
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}
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func (fake *fakeDiskManager) Cleanup() {
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os.RemoveAll(fake.tmpDir)
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}
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func (fake *fakeDiskManager) MakeGlobalPDName(disk fcDisk) string {
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return fake.tmpDir
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}
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func (fake *fakeDiskManager) AttachDisk(b fcDiskMounter) (string, error) {
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globalPath := b.manager.MakeGlobalPDName(*b.fcDisk)
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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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// 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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fake.attachCalled = true
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return "", nil
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}
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func (fake *fakeDiskManager) DetachDisk(c fcDiskUnmounter, mntPath string) error {
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globalPath := c.manager.MakeGlobalPDName(*c.fcDisk)
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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 doTestPlugin(t *testing.T, spec *volume.Spec) {
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tmpDir, err := utiltesting.MkTmpdir("fc_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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plugMgr := volume.VolumePluginMgr{}
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plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
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plug, err := plugMgr.FindPluginByName("kubernetes.io/fc")
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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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fakeManager := NewFakeDiskManager()
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defer fakeManager.Cleanup()
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fakeMounter := &mount.FakeMounter{}
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fakeExec := mount.NewFakeExec(nil)
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mounter, err := plug.(*fcPlugin).newMounterInternal(spec, types.UID("poduid"), fakeManager, fakeMounter, fakeExec)
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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: %v", err)
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}
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path := mounter.GetPath()
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expectedPath := fmt.Sprintf("%s/pods/poduid/volumes/kubernetes.io~fc/vol1", tmpDir)
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if path != expectedPath {
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t.Errorf("Unexpected path, expected %q, got: %q", expectedPath, 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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fakeManager2 := NewFakeDiskManager()
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defer fakeManager2.Cleanup()
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unmounter, err := plug.(*fcPlugin).newUnmounterInternal("vol1", types.UID("poduid"), fakeManager2, 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: %v", err)
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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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}
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func doTestPluginNilMounter(t *testing.T, spec *volume.Spec) {
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tmpDir, err := utiltesting.MkTmpdir("fc_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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plugMgr := volume.VolumePluginMgr{}
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plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
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plug, err := plugMgr.FindPluginByName("kubernetes.io/fc")
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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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fakeManager := NewFakeDiskManager()
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defer fakeManager.Cleanup()
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fakeMounter := &mount.FakeMounter{}
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fakeExec := mount.NewFakeExec(nil)
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mounter, err := plug.(*fcPlugin).newMounterInternal(spec, types.UID("poduid"), fakeManager, fakeMounter, fakeExec)
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if err == nil {
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t.Errorf("Error failed to make a new Mounter is expected: %v", err)
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}
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if mounter != nil {
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t.Errorf("A nil Mounter is expected: %v", err)
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}
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}
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func TestPluginVolume(t *testing.T) {
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lun := int32(0)
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vol := &v1.Volume{
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Name: "vol1",
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VolumeSource: v1.VolumeSource{
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FC: &v1.FCVolumeSource{
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TargetWWNs: []string{"500a0981891b8dc5"},
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FSType: "ext4",
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Lun: &lun,
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},
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},
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}
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doTestPlugin(t, volume.NewSpecFromVolume(vol))
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}
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func TestPluginPersistentVolume(t *testing.T) {
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lun := int32(0)
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vol := &v1.PersistentVolume{
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ObjectMeta: metav1.ObjectMeta{
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Name: "vol1",
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},
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Spec: v1.PersistentVolumeSpec{
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PersistentVolumeSource: v1.PersistentVolumeSource{
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FC: &v1.FCVolumeSource{
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TargetWWNs: []string{"500a0981891b8dc5"},
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FSType: "ext4",
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Lun: &lun,
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},
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},
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},
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}
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doTestPlugin(t, volume.NewSpecFromPersistentVolume(vol, false))
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}
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func TestPluginVolumeWWIDs(t *testing.T) {
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vol := &v1.Volume{
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Name: "vol1",
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VolumeSource: v1.VolumeSource{
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FC: &v1.FCVolumeSource{
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WWIDs: []string{"3600508b400105e210000900000490000"},
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FSType: "ext4",
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},
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},
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}
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doTestPlugin(t, volume.NewSpecFromVolume(vol))
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}
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func TestPluginPersistentVolumeWWIDs(t *testing.T) {
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vol := &v1.PersistentVolume{
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ObjectMeta: metav1.ObjectMeta{
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Name: "vol1",
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},
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Spec: v1.PersistentVolumeSpec{
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PersistentVolumeSource: v1.PersistentVolumeSource{
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FC: &v1.FCVolumeSource{
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WWIDs: []string{"3600508b400105e21 000900000490000"},
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FSType: "ext4",
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},
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},
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},
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}
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doTestPlugin(t, volume.NewSpecFromPersistentVolume(vol, false))
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}
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func TestPluginVolumeNoDiskInfo(t *testing.T) {
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vol := &v1.Volume{
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Name: "vol1",
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VolumeSource: v1.VolumeSource{
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FC: &v1.FCVolumeSource{
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FSType: "ext4",
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},
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},
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}
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doTestPluginNilMounter(t, volume.NewSpecFromVolume(vol))
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}
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func TestPluginPersistentVolumeNoDiskInfo(t *testing.T) {
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vol := &v1.PersistentVolume{
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ObjectMeta: metav1.ObjectMeta{
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Name: "vol1",
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},
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Spec: v1.PersistentVolumeSpec{
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PersistentVolumeSource: v1.PersistentVolumeSource{
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FC: &v1.FCVolumeSource{
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FSType: "ext4",
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},
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},
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},
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}
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doTestPluginNilMounter(t, volume.NewSpecFromPersistentVolume(vol, false))
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}
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func TestPersistentClaimReadOnlyFlag(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("fc_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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lun := int32(0)
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pv := &v1.PersistentVolume{
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ObjectMeta: metav1.ObjectMeta{
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Name: "pvA",
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},
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Spec: v1.PersistentVolumeSpec{
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PersistentVolumeSource: v1.PersistentVolumeSource{
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FC: &v1.FCVolumeSource{
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TargetWWNs: []string{"some_wwn"},
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FSType: "ext4",
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Lun: &lun,
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},
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},
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ClaimRef: &v1.ObjectReference{
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Name: "claimA",
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},
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},
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}
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claim := &v1.PersistentVolumeClaim{
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ObjectMeta: metav1.ObjectMeta{
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Name: "claimA",
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Namespace: "nsA",
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},
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Spec: v1.PersistentVolumeClaimSpec{
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VolumeName: "pvA",
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},
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Status: v1.PersistentVolumeClaimStatus{
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Phase: v1.ClaimBound,
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},
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}
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client := fake.NewSimpleClientset(pv, claim)
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plugMgr := volume.VolumePluginMgr{}
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plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, client, nil))
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plug, _ := plugMgr.FindPluginByName(fcPluginName)
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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 := &v1.Pod{ObjectMeta: metav1.ObjectMeta{UID: types.UID("poduid")}}
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mounter, _ := plug.NewMounter(spec, pod, volume.VolumeOptions{})
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if mounter == nil {
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t.Fatalf("Got a nil Mounter")
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}
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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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