612 lines
17 KiB
Go
612 lines
17 KiB
Go
/*
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Copyright 2016 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 kubelet
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import (
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"fmt"
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"testing"
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"github.com/stretchr/testify/assert"
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v1 "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/runtime"
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"k8s.io/apimachinery/pkg/types"
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core "k8s.io/client-go/testing"
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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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)
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func TestListVolumesForPod(t *testing.T) {
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if testing.Short() {
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t.Skip("skipping test in short mode.")
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}
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testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
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defer testKubelet.Cleanup()
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kubelet := testKubelet.kubelet
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pod := podWithUIDNameNsSpec("12345678", "foo", "test", v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "container1",
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VolumeMounts: []v1.VolumeMount{
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{
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Name: "vol1",
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MountPath: "/mnt/vol1",
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},
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{
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Name: "vol2",
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MountPath: "/mnt/vol2",
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},
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},
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},
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},
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Volumes: []v1.Volume{
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{
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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: "fake-device1",
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},
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},
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},
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{
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Name: "vol2",
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VolumeSource: v1.VolumeSource{
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GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
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PDName: "fake-device2",
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},
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},
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},
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},
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})
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stopCh := runVolumeManager(kubelet)
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defer close(stopCh)
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kubelet.podManager.SetPods([]*v1.Pod{pod})
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err := kubelet.volumeManager.WaitForAttachAndMount(pod)
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assert.NoError(t, err)
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podName := util.GetUniquePodName(pod)
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volumesToReturn, volumeExsit := kubelet.ListVolumesForPod(types.UID(podName))
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assert.True(t, volumeExsit, "expected to find volumes for pod %q", podName)
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outerVolumeSpecName1 := "vol1"
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assert.NotNil(t, volumesToReturn[outerVolumeSpecName1], "key %s", outerVolumeSpecName1)
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outerVolumeSpecName2 := "vol2"
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assert.NotNil(t, volumesToReturn[outerVolumeSpecName2], "key %s", outerVolumeSpecName2)
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}
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func TestPodVolumesExist(t *testing.T) {
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if testing.Short() {
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t.Skip("skipping test in short mode.")
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}
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testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
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defer testKubelet.Cleanup()
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kubelet := testKubelet.kubelet
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pods := []*v1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "pod1",
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UID: "pod1uid",
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "container1",
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VolumeMounts: []v1.VolumeMount{
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{
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Name: "vol1",
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MountPath: "/mnt/vol1",
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},
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},
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},
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},
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Volumes: []v1.Volume{
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{
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Name: "vol1",
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VolumeSource: v1.VolumeSource{
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RBD: &v1.RBDVolumeSource{
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RBDImage: "fake1",
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},
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},
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},
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},
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "pod2",
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UID: "pod2uid",
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "container2",
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VolumeMounts: []v1.VolumeMount{
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{
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Name: "vol2",
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MountPath: "/mnt/vol2",
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},
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},
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},
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},
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Volumes: []v1.Volume{
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{
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Name: "vol2",
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VolumeSource: v1.VolumeSource{
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RBD: &v1.RBDVolumeSource{
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RBDImage: "fake2",
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},
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},
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},
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},
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Name: "pod3",
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UID: "pod3uid",
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "container3",
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VolumeMounts: []v1.VolumeMount{
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{
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Name: "vol3",
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MountPath: "/mnt/vol3",
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},
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},
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},
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},
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Volumes: []v1.Volume{
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{
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Name: "vol3",
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VolumeSource: v1.VolumeSource{
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RBD: &v1.RBDVolumeSource{
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RBDImage: "fake3",
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},
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},
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},
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},
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},
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},
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}
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stopCh := runVolumeManager(kubelet)
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defer close(stopCh)
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kubelet.podManager.SetPods(pods)
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for _, pod := range pods {
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err := kubelet.volumeManager.WaitForAttachAndMount(pod)
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assert.NoError(t, err)
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}
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for _, pod := range pods {
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podVolumesExist := kubelet.podVolumesExist(pod.UID)
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assert.True(t, podVolumesExist, "pod %q", pod.UID)
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}
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}
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func TestVolumeAttachAndMountControllerDisabled(t *testing.T) {
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if testing.Short() {
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t.Skip("skipping test in short mode.")
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}
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testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
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defer testKubelet.Cleanup()
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kubelet := testKubelet.kubelet
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pod := podWithUIDNameNsSpec("12345678", "foo", "test", v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "container1",
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VolumeMounts: []v1.VolumeMount{
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{
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Name: "vol1",
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MountPath: "/mnt/vol1",
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},
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},
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},
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},
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Volumes: []v1.Volume{
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{
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Name: "vol1",
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VolumeSource: v1.VolumeSource{
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RBD: &v1.RBDVolumeSource{
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RBDImage: "fake",
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},
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},
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},
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},
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})
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stopCh := runVolumeManager(kubelet)
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defer close(stopCh)
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kubelet.podManager.SetPods([]*v1.Pod{pod})
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err := kubelet.volumeManager.WaitForAttachAndMount(pod)
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assert.NoError(t, err)
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podVolumes := kubelet.volumeManager.GetMountedVolumesForPod(
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util.GetUniquePodName(pod))
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expectedPodVolumes := []string{"vol1"}
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assert.Len(t, podVolumes, len(expectedPodVolumes), "Volumes for pod %+v", pod)
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for _, name := range expectedPodVolumes {
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assert.Contains(t, podVolumes, name, "Volumes for pod %+v", pod)
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}
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assert.True(t, testKubelet.volumePlugin.GetNewAttacherCallCount() >= 1, "Expected plugin NewAttacher to be called at least once")
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assert.NoError(t, volumetest.VerifyWaitForAttachCallCount(
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1 /* expectedWaitForAttachCallCount */, testKubelet.volumePlugin))
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assert.NoError(t, volumetest.VerifyAttachCallCount(
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1 /* expectedAttachCallCount */, testKubelet.volumePlugin))
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assert.NoError(t, volumetest.VerifyMountDeviceCallCount(
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1 /* expectedMountDeviceCallCount */, testKubelet.volumePlugin))
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assert.NoError(t, volumetest.VerifySetUpCallCount(
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1 /* expectedSetUpCallCount */, testKubelet.volumePlugin))
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}
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func TestVolumeUnmountAndDetachControllerDisabled(t *testing.T) {
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if testing.Short() {
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t.Skip("skipping test in short mode.")
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}
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testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
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defer testKubelet.Cleanup()
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kubelet := testKubelet.kubelet
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pod := podWithUIDNameNsSpec("12345678", "foo", "test", v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "container1",
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VolumeMounts: []v1.VolumeMount{
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{
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Name: "vol1",
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MountPath: "/mnt/vol1",
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},
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},
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},
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},
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Volumes: []v1.Volume{
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{
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Name: "vol1",
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VolumeSource: v1.VolumeSource{
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RBD: &v1.RBDVolumeSource{
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RBDImage: "fake-device",
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},
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},
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},
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},
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})
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stopCh := runVolumeManager(kubelet)
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defer close(stopCh)
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// Add pod
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kubelet.podManager.SetPods([]*v1.Pod{pod})
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// Verify volumes attached
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err := kubelet.volumeManager.WaitForAttachAndMount(pod)
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assert.NoError(t, err)
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podVolumes := kubelet.volumeManager.GetMountedVolumesForPod(
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util.GetUniquePodName(pod))
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expectedPodVolumes := []string{"vol1"}
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assert.Len(t, podVolumes, len(expectedPodVolumes), "Volumes for pod %+v", pod)
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for _, name := range expectedPodVolumes {
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assert.Contains(t, podVolumes, name, "Volumes for pod %+v", pod)
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}
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assert.True(t, testKubelet.volumePlugin.GetNewAttacherCallCount() >= 1, "Expected plugin NewAttacher to be called at least once")
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assert.NoError(t, volumetest.VerifyWaitForAttachCallCount(
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1 /* expectedWaitForAttachCallCount */, testKubelet.volumePlugin))
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assert.NoError(t, volumetest.VerifyAttachCallCount(
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1 /* expectedAttachCallCount */, testKubelet.volumePlugin))
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assert.NoError(t, volumetest.VerifyMountDeviceCallCount(
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1 /* expectedMountDeviceCallCount */, testKubelet.volumePlugin))
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assert.NoError(t, volumetest.VerifySetUpCallCount(
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1 /* expectedSetUpCallCount */, testKubelet.volumePlugin))
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// Remove pod
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// TODO: technically waitForVolumeUnmount
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kubelet.podWorkers.(*fakePodWorkers).setPodRuntimeBeRemoved(pod.UID)
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kubelet.podManager.SetPods([]*v1.Pod{})
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assert.NoError(t, kubelet.volumeManager.WaitForUnmount(pod))
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if actual := kubelet.volumeManager.GetMountedVolumesForPod(util.GetUniquePodName(pod)); len(actual) > 0 {
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t.Fatalf("expected volume unmount to wait for no volumes: %v", actual)
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}
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// Verify volumes unmounted
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podVolumes = kubelet.volumeManager.GetMountedVolumesForPod(
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util.GetUniquePodName(pod))
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assert.Len(t, podVolumes, 0,
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"Expected volumes to be unmounted and detached. But some volumes are still mounted: %#v", podVolumes)
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assert.NoError(t, volumetest.VerifyTearDownCallCount(
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1 /* expectedTearDownCallCount */, testKubelet.volumePlugin))
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// Verify volumes detached and no longer reported as in use
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assert.NoError(t, waitForVolumeDetach(v1.UniqueVolumeName("fake/fake-device"), kubelet.volumeManager))
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assert.True(t, testKubelet.volumePlugin.GetNewAttacherCallCount() >= 1, "Expected plugin NewAttacher to be called at least once")
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assert.NoError(t, volumetest.VerifyDetachCallCount(
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1 /* expectedDetachCallCount */, testKubelet.volumePlugin))
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}
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func TestVolumeAttachAndMountControllerEnabled(t *testing.T) {
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if testing.Short() {
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t.Skip("skipping test in short mode.")
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}
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testKubelet := newTestKubelet(t, true /* controllerAttachDetachEnabled */)
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defer testKubelet.Cleanup()
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kubelet := testKubelet.kubelet
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kubeClient := testKubelet.fakeKubeClient
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kubeClient.AddReactor("get", "nodes",
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func(action core.Action) (bool, runtime.Object, error) {
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return true, &v1.Node{
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ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
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Status: v1.NodeStatus{
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VolumesAttached: []v1.AttachedVolume{
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{
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Name: "fake/fake-device",
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DevicePath: "fake/path",
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},
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}},
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}, nil
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})
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kubeClient.AddReactor("*", "*", func(action core.Action) (bool, runtime.Object, error) {
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return true, nil, fmt.Errorf("no reaction implemented for %s", action)
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})
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pod := podWithUIDNameNsSpec("12345678", "foo", "test", v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "container1",
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VolumeMounts: []v1.VolumeMount{
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{
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Name: "vol1",
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MountPath: "/mnt/vol1",
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},
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},
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},
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},
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Volumes: []v1.Volume{
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{
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Name: "vol1",
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VolumeSource: v1.VolumeSource{
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RBD: &v1.RBDVolumeSource{
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RBDImage: "fake-device",
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},
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},
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},
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},
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})
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stopCh := runVolumeManager(kubelet)
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defer close(stopCh)
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kubelet.podManager.SetPods([]*v1.Pod{pod})
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// Fake node status update
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go simulateVolumeInUseUpdate(
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v1.UniqueVolumeName("fake/fake-device"),
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stopCh,
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kubelet.volumeManager)
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assert.NoError(t, kubelet.volumeManager.WaitForAttachAndMount(pod))
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podVolumes := kubelet.volumeManager.GetMountedVolumesForPod(
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util.GetUniquePodName(pod))
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allPodVolumes := kubelet.volumeManager.GetPossiblyMountedVolumesForPod(
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util.GetUniquePodName(pod))
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assert.Equal(t, podVolumes, allPodVolumes, "GetMountedVolumesForPod and GetPossiblyMountedVolumesForPod should return the same volumes")
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expectedPodVolumes := []string{"vol1"}
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assert.Len(t, podVolumes, len(expectedPodVolumes), "Volumes for pod %+v", pod)
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for _, name := range expectedPodVolumes {
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assert.Contains(t, podVolumes, name, "Volumes for pod %+v", pod)
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}
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assert.True(t, testKubelet.volumePlugin.GetNewAttacherCallCount() >= 1, "Expected plugin NewAttacher to be called at least once")
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assert.NoError(t, volumetest.VerifyWaitForAttachCallCount(
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1 /* expectedWaitForAttachCallCount */, testKubelet.volumePlugin))
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assert.NoError(t, volumetest.VerifyZeroAttachCalls(testKubelet.volumePlugin))
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assert.NoError(t, volumetest.VerifyMountDeviceCallCount(
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1 /* expectedMountDeviceCallCount */, testKubelet.volumePlugin))
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assert.NoError(t, volumetest.VerifySetUpCallCount(
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1 /* expectedSetUpCallCount */, testKubelet.volumePlugin))
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}
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func TestVolumeUnmountAndDetachControllerEnabled(t *testing.T) {
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if testing.Short() {
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t.Skip("skipping test in short mode.")
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}
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testKubelet := newTestKubelet(t, true /* controllerAttachDetachEnabled */)
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defer testKubelet.Cleanup()
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kubelet := testKubelet.kubelet
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kubeClient := testKubelet.fakeKubeClient
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kubeClient.AddReactor("get", "nodes",
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func(action core.Action) (bool, runtime.Object, error) {
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return true, &v1.Node{
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ObjectMeta: metav1.ObjectMeta{Name: testKubeletHostname},
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Status: v1.NodeStatus{
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VolumesAttached: []v1.AttachedVolume{
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{
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Name: "fake/fake-device",
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DevicePath: "fake/path",
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},
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}},
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}, nil
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})
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kubeClient.AddReactor("*", "*", func(action core.Action) (bool, runtime.Object, error) {
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return true, nil, fmt.Errorf("no reaction implemented for %s", action)
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})
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pod := podWithUIDNameNsSpec("12345678", "foo", "test", v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "container1",
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VolumeMounts: []v1.VolumeMount{
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{
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Name: "vol1",
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MountPath: "/mnt/vol1",
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},
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},
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},
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},
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Volumes: []v1.Volume{
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{
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Name: "vol1",
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VolumeSource: v1.VolumeSource{
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RBD: &v1.RBDVolumeSource{
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RBDImage: "fake-device",
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},
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},
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},
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},
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})
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stopCh := runVolumeManager(kubelet)
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defer close(stopCh)
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// Add pod
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kubelet.podManager.SetPods([]*v1.Pod{pod})
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// Fake node status update
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go simulateVolumeInUseUpdate(
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v1.UniqueVolumeName("fake/fake-device"),
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stopCh,
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kubelet.volumeManager)
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// Verify volumes attached
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assert.NoError(t, kubelet.volumeManager.WaitForAttachAndMount(pod))
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podVolumes := kubelet.volumeManager.GetMountedVolumesForPod(
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util.GetUniquePodName(pod))
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allPodVolumes := kubelet.volumeManager.GetPossiblyMountedVolumesForPod(
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util.GetUniquePodName(pod))
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assert.Equal(t, podVolumes, allPodVolumes, "GetMountedVolumesForPod and GetPossiblyMountedVolumesForPod should return the same volumes")
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|
|
|
expectedPodVolumes := []string{"vol1"}
|
|
assert.Len(t, podVolumes, len(expectedPodVolumes), "Volumes for pod %+v", pod)
|
|
for _, name := range expectedPodVolumes {
|
|
assert.Contains(t, podVolumes, name, "Volumes for pod %+v", pod)
|
|
}
|
|
|
|
assert.True(t, testKubelet.volumePlugin.GetNewAttacherCallCount() >= 1, "Expected plugin NewAttacher to be called at least once")
|
|
assert.NoError(t, volumetest.VerifyWaitForAttachCallCount(
|
|
1 /* expectedWaitForAttachCallCount */, testKubelet.volumePlugin))
|
|
assert.NoError(t, volumetest.VerifyZeroAttachCalls(testKubelet.volumePlugin))
|
|
assert.NoError(t, volumetest.VerifyMountDeviceCallCount(
|
|
1 /* expectedMountDeviceCallCount */, testKubelet.volumePlugin))
|
|
assert.NoError(t, volumetest.VerifySetUpCallCount(
|
|
1 /* expectedSetUpCallCount */, testKubelet.volumePlugin))
|
|
|
|
// Remove pod
|
|
kubelet.podWorkers.(*fakePodWorkers).setPodRuntimeBeRemoved(pod.UID)
|
|
kubelet.podManager.SetPods([]*v1.Pod{})
|
|
|
|
assert.NoError(t, waitForVolumeUnmount(kubelet.volumeManager, pod))
|
|
|
|
// Verify volumes unmounted
|
|
podVolumes = kubelet.volumeManager.GetMountedVolumesForPod(
|
|
util.GetUniquePodName(pod))
|
|
allPodVolumes = kubelet.volumeManager.GetPossiblyMountedVolumesForPod(
|
|
util.GetUniquePodName(pod))
|
|
assert.Equal(t, podVolumes, allPodVolumes, "GetMountedVolumesForPod and GetPossiblyMountedVolumesForPod should return the same volumes")
|
|
|
|
assert.Len(t, podVolumes, 0,
|
|
"Expected volumes to be unmounted and detached. But some volumes are still mounted: %#v", podVolumes)
|
|
|
|
assert.NoError(t, volumetest.VerifyTearDownCallCount(
|
|
1 /* expectedTearDownCallCount */, testKubelet.volumePlugin))
|
|
|
|
// Verify volumes detached and no longer reported as in use
|
|
assert.NoError(t, waitForVolumeDetach(v1.UniqueVolumeName("fake/fake-device"), kubelet.volumeManager))
|
|
assert.True(t, testKubelet.volumePlugin.GetNewAttacherCallCount() >= 1, "Expected plugin NewAttacher to be called at least once")
|
|
assert.NoError(t, volumetest.VerifyZeroDetachCallCount(testKubelet.volumePlugin))
|
|
}
|
|
|
|
type stubVolume struct {
|
|
path string
|
|
volume.MetricsNil
|
|
}
|
|
|
|
func (f *stubVolume) GetPath() string {
|
|
return f.path
|
|
}
|
|
|
|
func (f *stubVolume) GetAttributes() volume.Attributes {
|
|
return volume.Attributes{}
|
|
}
|
|
|
|
func (f *stubVolume) SetUp(mounterArgs volume.MounterArgs) error {
|
|
return nil
|
|
}
|
|
|
|
func (f *stubVolume) SetUpAt(dir string, mounterArgs volume.MounterArgs) error {
|
|
return nil
|
|
}
|
|
|
|
type stubBlockVolume struct {
|
|
dirPath string
|
|
volName string
|
|
}
|
|
|
|
func (f *stubBlockVolume) GetGlobalMapPath(spec *volume.Spec) (string, error) {
|
|
return "", nil
|
|
}
|
|
|
|
func (f *stubBlockVolume) GetPodDeviceMapPath() (string, string) {
|
|
return f.dirPath, f.volName
|
|
}
|
|
|
|
func (f *stubBlockVolume) SetUpDevice() (string, error) {
|
|
return "", nil
|
|
}
|
|
|
|
func (f stubBlockVolume) MapPodDevice() error {
|
|
return nil
|
|
}
|
|
|
|
func (f *stubBlockVolume) TearDownDevice(mapPath string, devicePath string) error {
|
|
return nil
|
|
}
|
|
|
|
func (f *stubBlockVolume) UnmapPodDevice() error {
|
|
return nil
|
|
}
|
|
|
|
func (f *stubBlockVolume) SupportsMetrics() bool {
|
|
return false
|
|
}
|
|
|
|
func (f *stubBlockVolume) GetMetrics() (*volume.Metrics, error) {
|
|
return nil, nil
|
|
}
|