mirror of https://github.com/k3s-io/k3s
345 lines
11 KiB
Go
345 lines
11 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 gcepd
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import (
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"fmt"
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"os"
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"path"
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"reflect"
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"sort"
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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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kubeletapis "k8s.io/kubernetes/pkg/kubelet/apis"
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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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volumeutil "k8s.io/kubernetes/pkg/volume/util"
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)
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func TestCanSupport(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("gcepdTest")
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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/gce-pd")
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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/gce-pd" {
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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{GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{}}}}) {
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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{GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{}}}}}) {
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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("gcepdTest")
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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.FindPersistentPluginByName("kubernetes.io/gce-pd")
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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 !volumetest.ContainsAccessMode(plug.GetAccessModes(), v1.ReadWriteOnce) || !volumetest.ContainsAccessMode(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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type fakePDManager struct {
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}
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func (fake *fakePDManager) CreateVolume(c *gcePersistentDiskProvisioner, 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["fakepdmanager"] = "yes"
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labels[kubeletapis.LabelZoneFailureDomain] = "zone1__zone2"
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return "test-gce-volume-name", 100, labels, "", nil
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}
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func (fake *fakePDManager) DeleteVolume(cd *gcePersistentDiskDeleter) error {
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if cd.pdName != "test-gce-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 getNodeSelectorRequirementWithKey(key string, term v1.NodeSelectorTerm) (*v1.NodeSelectorRequirement, error) {
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for _, r := range term.MatchExpressions {
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if r.Key == key {
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return &r, nil
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}
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}
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return nil, fmt.Errorf("key %s not found", key)
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}
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func TestPlugin(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("gcepdTest")
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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/gce-pd")
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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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GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
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PDName: "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.(*gcePersistentDiskPlugin).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~gce-pd/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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fakeManager = &fakePDManager{}
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unmounter, err := plug.(*gcePersistentDiskPlugin).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("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.(*gcePersistentDiskPlugin).newProvisionerInternal(options, &fakePDManager{})
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if err != nil {
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t.Errorf("Error creating new provisioner:%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.GCEPersistentDisk.PDName != "test-gce-volume-name" {
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t.Errorf("Provision() returned unexpected volume ID: %s", persistentSpec.Spec.PersistentVolumeSource.GCEPersistentDisk.PDName)
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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*util.GIB {
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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 value for fakepdmanager: %v", persistentSpec.Labels["fakepdmanager"])
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}
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if persistentSpec.Labels[kubeletapis.LabelZoneFailureDomain] != "zone1__zone2" {
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t.Errorf("Provision() returned unexpected value for %s: %v", kubeletapis.LabelZoneFailureDomain, persistentSpec.Labels[kubeletapis.LabelZoneFailureDomain])
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}
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if persistentSpec.Spec.NodeAffinity == nil {
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t.Errorf("Unexpected nil NodeAffinity found")
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}
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if len(persistentSpec.Spec.NodeAffinity.Required.NodeSelectorTerms) != 1 {
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t.Errorf("Unexpected number of NodeSelectorTerms")
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}
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term := persistentSpec.Spec.NodeAffinity.Required.NodeSelectorTerms[0]
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if len(term.MatchExpressions) != 2 {
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t.Errorf("Unexpected number of NodeSelectorRequirements in volume NodeAffinity: %d", len(term.MatchExpressions))
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}
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r, _ := getNodeSelectorRequirementWithKey("fakepdmanager", term)
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if r == nil || r.Values[0] != "yes" || r.Operator != v1.NodeSelectorOpIn {
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t.Errorf("NodeSelectorRequirement fakepdmanager-in-yes not found in volume NodeAffinity")
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}
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zones, _ := volumeutil.ZonesToSet("zone1,zone2")
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r, _ = getNodeSelectorRequirementWithKey(kubeletapis.LabelZoneFailureDomain, term)
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if r == nil {
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t.Errorf("NodeSelectorRequirement %s-in-%v not found in volume NodeAffinity", kubeletapis.LabelZoneFailureDomain, zones)
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}
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sort.Strings(r.Values)
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if !reflect.DeepEqual(r.Values, zones.List()) {
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t.Errorf("ZoneFailureDomain elements %v does not match zone labels %v", r.Values, zones)
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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.(*gcePersistentDiskPlugin).newDeleterInternal(volSpec, &fakePDManager{})
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if err != nil {
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t.Errorf("Error creating new deleter:%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 TestMountOptions(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("gcepdTest")
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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/gce-pd")
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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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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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GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{},
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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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MountOptions: []string{"_netdev"},
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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.(*gcePersistentDiskPlugin).newMounterInternal(volume.NewSpecFromPersistentVolume(pv, false), 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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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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mountOptions := fakeMounter.MountPoints[0].Opts
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expectedMountOptions := []string{"_netdev", "bind"}
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if !reflect.DeepEqual(mountOptions, expectedMountOptions) {
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t.Errorf("Expected mount options to be %v got %v", expectedMountOptions, mountOptions)
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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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GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{},
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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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tmpDir, err := utiltesting.MkTmpdir("gcepdTest")
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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, client, nil))
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plug, _ := plugMgr.FindPluginByName(gcePersistentDiskPluginName)
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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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