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344 lines
10 KiB
Go
344 lines
10 KiB
Go
// +build !providerless
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/*
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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 cinder
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import (
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"fmt"
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"os"
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"path/filepath"
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"testing"
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"time"
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"k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/types"
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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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"k8s.io/kubernetes/pkg/volume/util"
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"k8s.io/legacy-cloud-providers/openstack"
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)
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func TestCanSupport(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("cinderTest")
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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(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
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plug, err := plugMgr.FindPluginByName("kubernetes.io/cinder")
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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/cinder" {
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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{Cinder: &v1.CinderVolumeSource{}}}}) {
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t.Errorf("Expected true")
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}
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if !plug.CanSupport(&volume.Spec{PersistentVolume: &v1.PersistentVolume{Spec: v1.PersistentVolumeSpec{PersistentVolumeSource: v1.PersistentVolumeSource{Cinder: &v1.CinderPersistentVolumeSource{}}}}}) {
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t.Errorf("Expected true")
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}
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}
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type fakePDManager struct {
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// How long should AttachDisk/DetachDisk take - we need slower AttachDisk in a test.
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attachDetachDuration time.Duration
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}
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func getFakeDeviceName(host volume.VolumeHost, pdName string) string {
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return filepath.Join(host.GetPluginDir(cinderVolumePluginName), "device", pdName)
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}
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// Real Cinder AttachDisk attaches a cinder volume. If it is not yet mounted,
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// it mounts it to globalPDPath.
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// We create a dummy directory (="device") and bind-mount it to globalPDPath
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func (fake *fakePDManager) AttachDisk(b *cinderVolumeMounter, globalPDPath string) error {
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globalPath := makeGlobalPDName(b.plugin.host, b.pdName)
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fakeDeviceName := getFakeDeviceName(b.plugin.host, b.pdName)
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err := os.MkdirAll(fakeDeviceName, 0750)
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if err != nil {
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return err
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}
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// Attaching a Cinder volume can be slow...
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time.Sleep(fake.attachDetachDuration)
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// The volume is "attached", bind-mount it if it's not mounted yet.
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notmnt, err := b.mounter.IsLikelyNotMountPoint(globalPath)
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if err != nil {
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if os.IsNotExist(err) {
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if err := os.MkdirAll(globalPath, 0750); err != nil {
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return err
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}
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notmnt = true
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} else {
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return err
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}
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}
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if notmnt {
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err = b.mounter.Mount(fakeDeviceName, globalPath, "", []string{"bind"})
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (fake *fakePDManager) DetachDisk(c *cinderVolumeUnmounter) error {
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globalPath := makeGlobalPDName(c.plugin.host, c.pdName)
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fakeDeviceName := getFakeDeviceName(c.plugin.host, c.pdName)
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// unmount the bind-mount - should be fast
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err := c.mounter.Unmount(globalPath)
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if err != nil {
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return err
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}
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// "Detach" the fake "device"
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err = os.RemoveAll(fakeDeviceName)
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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 *fakePDManager) CreateVolume(c *cinderVolumeProvisioner, node *v1.Node, allowedTopologies []v1.TopologySelectorTerm) (volumeID string, volumeSizeGB int, labels map[string]string, fstype string, err error) {
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labels = make(map[string]string)
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labels[v1.LabelZoneFailureDomain] = "nova"
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return "test-volume-name", 1, labels, "", nil
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}
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func (fake *fakePDManager) DeleteVolume(cd *cinderVolumeDeleter) error {
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if cd.pdName != "test-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("cinderTest")
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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(), nil /* prober */, volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
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plug, err := plugMgr.FindPluginByName("kubernetes.io/cinder")
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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 := &v1.Volume{
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Name: "vol1",
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VolumeSource: v1.VolumeSource{
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Cinder: &v1.CinderVolumeSource{
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VolumeID: "pd",
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FSType: "ext4",
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},
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},
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}
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mounter, err := plug.(*cinderPlugin).newMounterInternal(volume.NewSpecFromVolume(spec), types.UID("poduid"), &fakePDManager{0}, &mount.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 := filepath.Join(tmpDir, "pods/poduid/volumes/kubernetes.io~cinder/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(volume.MounterArgs{}); 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.(*cinderPlugin).newUnmounterInternal("vol1", types.UID("poduid"), &fakePDManager{0}, &mount.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("TearDown() failed: %v", err)
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}
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// Test Provisioner
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options := volume.VolumeOptions{
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PVC: volumetest.CreateTestPVC("100Mi", []v1.PersistentVolumeAccessMode{v1.ReadWriteOnce}),
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PersistentVolumeReclaimPolicy: v1.PersistentVolumeReclaimDelete,
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}
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provisioner, err := plug.(*cinderPlugin).newProvisionerInternal(options, &fakePDManager{0})
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if err != nil {
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t.Errorf("ProvisionerInternal() failed: %v", err)
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}
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persistentSpec, err := provisioner.Provision(nil, nil)
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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.Cinder.VolumeID != "test-volume-name" {
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t.Errorf("Provision() returned unexpected volume ID: %s", persistentSpec.Spec.PersistentVolumeSource.Cinder.VolumeID)
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}
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cap := persistentSpec.Spec.Capacity[v1.ResourceStorage]
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size := cap.Value()
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if size != 1024*1024*1024 {
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t.Errorf("Provision() returned unexpected volume size: %v", size)
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}
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// check nodeaffinity members
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if persistentSpec.Spec.NodeAffinity == nil {
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t.Errorf("Provision() returned unexpected nil NodeAffinity")
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}
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if persistentSpec.Spec.NodeAffinity.Required == nil {
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t.Errorf("Provision() returned unexpected nil NodeAffinity.Required")
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}
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n := len(persistentSpec.Spec.NodeAffinity.Required.NodeSelectorTerms)
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if n != 1 {
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t.Errorf("Provision() returned unexpected number of NodeSelectorTerms %d. Expected %d", n, 1)
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}
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n = len(persistentSpec.Spec.NodeAffinity.Required.NodeSelectorTerms[0].MatchExpressions)
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if n != 1 {
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t.Errorf("Provision() returned unexpected number of MatchExpressions %d. Expected %d", n, 1)
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}
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req := persistentSpec.Spec.NodeAffinity.Required.NodeSelectorTerms[0].MatchExpressions[0]
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if req.Key != v1.LabelZoneFailureDomain {
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t.Errorf("Provision() returned unexpected requirement key in NodeAffinity %v", req.Key)
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}
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if req.Operator != v1.NodeSelectorOpIn {
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t.Errorf("Provision() returned unexpected requirement operator in NodeAffinity %v", req.Operator)
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}
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if len(req.Values) != 1 || req.Values[0] != "nova" {
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t.Errorf("Provision() returned unexpected requirement value in NodeAffinity %v", req.Values)
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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.(*cinderPlugin).newDeleterInternal(volSpec, &fakePDManager{0})
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if err != nil {
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t.Errorf("DeleterInternal() failed: %v", err)
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}
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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 TestGetVolumeLimit(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("cinderTest")
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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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cloud, err := getOpenstackCloudProvider()
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if err != nil {
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t.Fatalf("can not instantiate openstack cloudprovider : %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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volumeHost := volumetest.NewFakeVolumeHostWithCloudProvider(tmpDir, nil, nil, cloud)
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plugMgr.InitPlugins(ProbeVolumePlugins(), nil /* prober */, volumeHost)
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plug, err := plugMgr.FindPluginByName("kubernetes.io/cinder")
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if err != nil {
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t.Fatalf("Can't find the plugin by name")
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}
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attachablePlugin, ok := plug.(volume.VolumePluginWithAttachLimits)
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if !ok {
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t.Fatalf("plugin %s is not of attachable type", plug.GetPluginName())
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}
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limits, err := attachablePlugin.GetVolumeLimits()
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if err != nil {
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t.Errorf("error fetching limits : %v", err)
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}
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if len(limits) == 0 {
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t.Fatalf("expecting limit from openstack got none")
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}
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limit, _ := limits[util.CinderVolumeLimitKey]
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if limit != 10 {
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t.Fatalf("expected volume limit to be 10 got %d", limit)
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}
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}
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func getOpenstackCloudProvider() (*openstack.OpenStack, error) {
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cfg := getOpenstackConfig()
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return openstack.NewFakeOpenStackCloud(cfg)
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}
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func getOpenstackConfig() openstack.Config {
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cfg := openstack.Config{
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Global: struct {
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AuthURL string `gcfg:"auth-url"`
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Username string
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UserID string `gcfg:"user-id"`
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Password string
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TenantID string `gcfg:"tenant-id"`
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TenantName string `gcfg:"tenant-name"`
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TrustID string `gcfg:"trust-id"`
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DomainID string `gcfg:"domain-id"`
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DomainName string `gcfg:"domain-name"`
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Region string
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CAFile string `gcfg:"ca-file"`
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SecretName string `gcfg:"secret-name"`
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SecretNamespace string `gcfg:"secret-namespace"`
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KubeconfigPath string `gcfg:"kubeconfig-path"`
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}{
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Username: "user",
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Password: "pass",
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TenantID: "foobar",
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DomainID: "2a73b8f597c04551a0fdc8e95544be8a",
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DomainName: "local",
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AuthURL: "http://auth.url",
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UserID: "user",
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},
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BlockStorage: openstack.BlockStorageOpts{
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NodeVolumeAttachLimit: 10,
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},
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}
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return cfg
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}
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