mirror of https://github.com/k3s-io/k3s
300 lines
9.4 KiB
Go
300 lines
9.4 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 aws_ebs
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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/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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utiltesting "k8s.io/client-go/util/testing"
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"k8s.io/kubernetes/pkg/client/clientset_generated/clientset/fake"
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"k8s.io/kubernetes/pkg/cloudprovider/providers/aws"
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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("awsebsTest")
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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/aws-ebs")
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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/aws-ebs" {
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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{AWSElasticBlockStore: &v1.AWSElasticBlockStoreVolumeSource{}}}}) {
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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{AWSElasticBlockStore: &v1.AWSElasticBlockStoreVolumeSource{}}}}}) {
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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("awsebsTest")
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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/aws-ebs")
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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) {
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t.Errorf("Expected to support AccessModeTypes: %s", v1.ReadWriteOnce)
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}
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if contains(plug.GetAccessModes(), v1.ReadOnlyMany) {
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t.Errorf("Expected not to support AccessModeTypes: %s", 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 fakePDManager struct {
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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) CreateVolume(c *awsElasticBlockStoreProvisioner) (volumeID aws.KubernetesVolumeID, 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-aws-volume-name", 100, labels, nil
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}
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func (fake *fakePDManager) DeleteVolume(cd *awsElasticBlockStoreDeleter) error {
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if cd.volumeID != "test-aws-volume-name" {
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return fmt.Errorf("Deleter got unexpected volume name: %s", cd.volumeID)
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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("awsebsTest")
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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/aws-ebs")
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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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AWSElasticBlockStore: &v1.AWSElasticBlockStoreVolumeSource{
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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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fakeManager := &fakePDManager{}
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fakeMounter := &mount.FakeMounter{}
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mounter, err := plug.(*awsElasticBlockStorePlugin).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~aws-ebs/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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fakeManager = &fakePDManager{}
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unmounter, err := plug.(*awsElasticBlockStorePlugin).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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// 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.(*awsElasticBlockStorePlugin).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.AWSElasticBlockStore.VolumeID != "test-aws-volume-name" {
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t.Errorf("Provision() returned unexpected volume ID: %s", persistentSpec.Spec.PersistentVolumeSource.AWSElasticBlockStore.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 != 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.(*awsElasticBlockStorePlugin).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 := &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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AWSElasticBlockStore: &v1.AWSElasticBlockStoreVolumeSource{},
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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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clientset := fake.NewSimpleClientset(pv, claim)
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tmpDir, err := utiltesting.MkTmpdir("awsebsTest")
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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, clientset, nil))
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plug, _ := plugMgr.FindPluginByName(awsElasticBlockStorePluginName)
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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.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 TestMounterAndUnmounterTypeAssert(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("awsebsTest")
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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/aws-ebs")
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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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AWSElasticBlockStore: &v1.AWSElasticBlockStoreVolumeSource{
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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.(*awsElasticBlockStorePlugin).newMounterInternal(volume.NewSpecFromVolume(spec), types.UID("poduid"), &fakePDManager{}, &mount.FakeMounter{})
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if _, ok := mounter.(volume.Unmounter); ok {
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t.Errorf("Volume Mounter can be type-assert to Unmounter")
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}
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unmounter, err := plug.(*awsElasticBlockStorePlugin).newUnmounterInternal("vol1", types.UID("poduid"), &fakePDManager{}, &mount.FakeMounter{})
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if _, ok := unmounter.(volume.Mounter); ok {
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t.Errorf("Volume Unmounter can be type-assert to Mounter")
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}
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}
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