mirror of https://github.com/k3s-io/k3s
332 lines
8.7 KiB
Go
332 lines
8.7 KiB
Go
/*
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Copyright 2014 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 rbd
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"reflect"
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"testing"
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"github.com/stretchr/testify/assert"
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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("rbd_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/rbd")
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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/rbd" {
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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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type fakeDiskManager struct {
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tmpDir string
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}
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func NewFakeDiskManager() *fakeDiskManager {
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return &fakeDiskManager{
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tmpDir: utiltesting.MkTmpdirOrDie("rbd_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 rbd) string {
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return fake.tmpDir
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}
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func (fake *fakeDiskManager) AttachDisk(b rbdMounter) error {
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globalPath := b.manager.MakeGlobalPDName(*b.rbd)
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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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return nil
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}
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func (fake *fakeDiskManager) DetachDisk(c rbdUnmounter, mntPath string) error {
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globalPath := c.manager.MakeGlobalPDName(*c.rbd)
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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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return nil
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}
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func (fake *fakeDiskManager) CreateImage(provisioner *rbdVolumeProvisioner) (r *v1.RBDVolumeSource, volumeSizeGB int, err error) {
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return nil, 0, fmt.Errorf("not implemented")
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}
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func (fake *fakeDiskManager) DeleteImage(deleter *rbdVolumeDeleter) error {
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return fmt.Errorf("not implemented")
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}
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func doTestPlugin(t *testing.T, spec *volume.Spec) {
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tmpDir, err := utiltesting.MkTmpdir("rbd_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/rbd")
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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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fdm := NewFakeDiskManager()
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defer fdm.Cleanup()
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exec := mount.NewFakeExec(nil)
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mounter, err := plug.(*rbdPlugin).newMounterInternal(spec, types.UID("poduid"), fdm, &mount.FakeMounter{}, exec, "secrets")
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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.Error("Got a nil Mounter")
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}
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path := mounter.GetPath()
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expectedPath := fmt.Sprintf("%s/pods/poduid/volumes/kubernetes.io~rbd/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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unmounter, err := plug.(*rbdPlugin).newUnmounterInternal("vol1", types.UID("poduid"), fdm, &mount.FakeMounter{}, exec)
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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.Error("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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}
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func TestPluginVolume(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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RBD: &v1.RBDVolumeSource{
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CephMonitors: []string{"a", "b"},
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RBDImage: "bar",
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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 TestPluginPersistentVolume(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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RBD: &v1.RBDVolumeSource{
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CephMonitors: []string{"a", "b"},
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RBDImage: "bar",
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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 TestPersistentClaimReadOnlyFlag(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("rbd_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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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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RBD: &v1.RBDVolumeSource{
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CephMonitors: []string{"a", "b"},
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RBDImage: "bar",
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FSType: "ext4",
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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(rbdPluginName)
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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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func TestPersistAndLoadRBD(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("rbd_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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testcases := []struct {
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rbdMounter rbdMounter
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expectedJSONStr string
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expectedLoadedRBDMounter rbdMounter
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}{
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{
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rbdMounter{},
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`{"Mon":null,"Id":"","Keyring":"","Secret":""}`,
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rbdMounter{},
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},
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{
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rbdMounter{
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rbd: &rbd{
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podUID: "poduid",
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Pool: "kube",
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Image: "some-test-image",
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ReadOnly: false,
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MetricsProvider: volume.NewMetricsStatFS("/tmp"),
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},
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Mon: []string{"127.0.0.1"},
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Id: "kube",
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Keyring: "",
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Secret: "QVFEcTdKdFp4SmhtTFJBQUNwNDI3UnhGRzBvQ1Y0SUJwLy9pRUE9PQ==",
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},
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`
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{
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"Pool": "kube",
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"Image": "some-test-image",
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"ReadOnly": false,
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"Mon": ["127.0.0.1"],
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"Id": "kube",
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"Keyring": "",
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"Secret": "QVFEcTdKdFp4SmhtTFJBQUNwNDI3UnhGRzBvQ1Y0SUJwLy9pRUE9PQ=="
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}
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`,
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rbdMounter{
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rbd: &rbd{
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Pool: "kube",
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Image: "some-test-image",
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ReadOnly: false,
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},
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Mon: []string{"127.0.0.1"},
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Id: "kube",
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Keyring: "",
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Secret: "QVFEcTdKdFp4SmhtTFJBQUNwNDI3UnhGRzBvQ1Y0SUJwLy9pRUE9PQ==",
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},
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},
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}
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util := &RBDUtil{}
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for _, c := range testcases {
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err = util.persistRBD(c.rbdMounter, tmpDir)
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if err != nil {
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t.Errorf("failed to persist rbd: %v, err: %v", c.rbdMounter, err)
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}
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jsonFile := filepath.Join(tmpDir, "rbd.json")
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jsonData, err := ioutil.ReadFile(jsonFile)
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if err != nil {
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t.Errorf("failed to read json file %s: %v", jsonFile, err)
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}
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if !assert.JSONEq(t, c.expectedJSONStr, string(jsonData)) {
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t.Errorf("json file does not match expected one: %s, should be %s", string(jsonData), c.expectedJSONStr)
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}
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tmpRBDMounter := rbdMounter{}
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err = util.loadRBD(&tmpRBDMounter, tmpDir)
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if err != nil {
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t.Errorf("faild to load rbd: %v", err)
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}
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if !reflect.DeepEqual(tmpRBDMounter, c.expectedLoadedRBDMounter) {
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t.Errorf("loaded rbd does not equal to expected one: %v, should be %v", tmpRBDMounter, c.rbdMounter)
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}
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}
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}
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