mirror of
https://github.com/k3s-io/kubernetes.git
synced 2026-01-04 23:17:50 +00:00
Add support for flex volume. Flex volume adds support for thirdparty(vendor)
volumes and custom mounts.
This commit is contained in:
Chakravarthy Nelluri
374
pkg/volume/flexvolume/flexvolume_test.go
Normal file
374
pkg/volume/flexvolume/flexvolume_test.go
Normal file
@@ -0,0 +1,374 @@
|
||||
/*
|
||||
Copyright 2015 The Kubernetes Authors All rights reserved.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package flexvolume
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"os"
|
||||
"path"
|
||||
"testing"
|
||||
"text/template"
|
||||
|
||||
"k8s.io/kubernetes/pkg/api"
|
||||
"k8s.io/kubernetes/pkg/types"
|
||||
"k8s.io/kubernetes/pkg/util/exec"
|
||||
"k8s.io/kubernetes/pkg/util/mount"
|
||||
"k8s.io/kubernetes/pkg/volume"
|
||||
)
|
||||
|
||||
// The temp dir where test plugins will be stored.
|
||||
const testPluginPath = "/tmp/fake/plugins/volume"
|
||||
|
||||
const execScriptTempl1 = `#!/bin/bash
|
||||
if [ "$1" == "init" -a $# -eq 1 ]; then
|
||||
echo -n '{
|
||||
"status": "Success"
|
||||
}'
|
||||
exit 0
|
||||
fi
|
||||
|
||||
PATH=$2
|
||||
if [ "$1" == "attach" -a $# -eq 2 ]; then
|
||||
echo -n '{
|
||||
"device": "{{.DevicePath}}",
|
||||
"status": "Success"
|
||||
}'
|
||||
exit 0
|
||||
elif [ "$1" == "detach" -a $# -eq 2 ]; then
|
||||
echo -n '{
|
||||
"status": "Success"
|
||||
}'
|
||||
exit 0
|
||||
elif [ "$1" == "mount" -a $# -eq 4 ]; then
|
||||
echo -n '{
|
||||
"status": "Not supported"
|
||||
}'
|
||||
exit 0
|
||||
elif [ "$1" == "unmount" -a $# -eq 2 ]; then
|
||||
echo -n '{
|
||||
"status": "Not supported"
|
||||
}'
|
||||
exit 0
|
||||
fi
|
||||
|
||||
echo -n '{
|
||||
"status": "Failure",
|
||||
"reason": "Invalid usage"
|
||||
}'
|
||||
exit 1
|
||||
|
||||
# Direct the arguments to a file to be tested against later
|
||||
echo -n $@ &> {{.OutputFile}}
|
||||
`
|
||||
|
||||
const execScriptTempl2 = `#!/bin/bash
|
||||
if [ "$1" == "init" -a $# -eq 1 ]; then
|
||||
echo -n '{
|
||||
"status": "Success"
|
||||
}'
|
||||
exit 0
|
||||
fi
|
||||
|
||||
if [ "$1" == "attach" -a $# -eq 2 ]; then
|
||||
echo -n '{
|
||||
"status": "Not supported"
|
||||
}'
|
||||
exit 0
|
||||
elif [ "$1" == "detach" -a $# -eq 2 ]; then
|
||||
echo -n '{
|
||||
"status": "Not supported"
|
||||
}'
|
||||
exit 0
|
||||
elif [ "$1" == "mount" -a $# -eq 4 ]; then
|
||||
PATH=$2
|
||||
/bin/mkdir -p $PATH
|
||||
if [ $? -ne 0 ]; then
|
||||
echo -n '{
|
||||
"status": "Failure",
|
||||
"reason": "Failed to create $PATH"
|
||||
}'
|
||||
exit 1
|
||||
fi
|
||||
echo -n '{
|
||||
"status": "Success"
|
||||
}'
|
||||
exit 0
|
||||
elif [ "$1" == "unmount" -a $# -eq 2 ]; then
|
||||
PATH=$2
|
||||
/bin/rm -r $PATH
|
||||
if [ $? -ne 0 ]; then
|
||||
echo -n '{
|
||||
"status": "Failure",
|
||||
"reason": "Failed to cleanup $PATH"
|
||||
}'
|
||||
exit 1
|
||||
fi
|
||||
echo -n '{
|
||||
"status": "Success"
|
||||
}'
|
||||
exit 0
|
||||
fi
|
||||
|
||||
echo -n '{
|
||||
"status": "Failure",
|
||||
"reason": "Invalid usage"
|
||||
}'
|
||||
exit 1
|
||||
|
||||
# Direct the arguments to a file to be tested against later
|
||||
echo -n $@ &> {{.OutputFile}}
|
||||
`
|
||||
|
||||
func installPluginUnderTest(t *testing.T, vendorName string, plugName string, execScriptTempl string, execTemplateData *map[string]interface{}) {
|
||||
vendoredName := plugName
|
||||
if vendorName != "" {
|
||||
vendoredName = fmt.Sprintf("%s~%s", vendorName, plugName)
|
||||
}
|
||||
pluginDir := path.Join(testPluginPath, vendoredName)
|
||||
err := os.MkdirAll(pluginDir, 0777)
|
||||
if err != nil {
|
||||
t.Errorf("Failed to create plugin: %v", err)
|
||||
}
|
||||
pluginExec := path.Join(pluginDir, plugName)
|
||||
f, err := os.Create(pluginExec)
|
||||
if err != nil {
|
||||
t.Errorf("Failed to install plugin")
|
||||
}
|
||||
err = f.Chmod(0777)
|
||||
if err != nil {
|
||||
t.Errorf("Failed to set exec perms on plugin")
|
||||
}
|
||||
if execTemplateData == nil {
|
||||
execTemplateData = &map[string]interface{}{
|
||||
"DevicePath": "/dev/sdx",
|
||||
"OutputFile": path.Join(pluginDir, plugName+".out"),
|
||||
}
|
||||
}
|
||||
|
||||
tObj := template.Must(template.New("test").Parse(execScriptTempl))
|
||||
buf := &bytes.Buffer{}
|
||||
if err := tObj.Execute(buf, *execTemplateData); err != nil {
|
||||
t.Errorf("Error in executing script template - %v", err)
|
||||
}
|
||||
execScript := buf.String()
|
||||
_, err = f.WriteString(execScript)
|
||||
if err != nil {
|
||||
t.Errorf("Failed to write plugin exec")
|
||||
}
|
||||
f.Close()
|
||||
}
|
||||
|
||||
func TestCanSupport(t *testing.T) {
|
||||
plugMgr := volume.VolumePluginMgr{}
|
||||
installPluginUnderTest(t, "kubernetes.io", "fakeAttacher", execScriptTempl1, nil)
|
||||
plugMgr.InitPlugins(ProbeVolumePlugins(testPluginPath), volume.NewFakeVolumeHost("fake", nil, nil))
|
||||
plugin, err := plugMgr.FindPluginByName("kubernetes.io/fakeAttacher")
|
||||
if err != nil {
|
||||
t.Errorf("Can't find the plugin by name")
|
||||
}
|
||||
if plugin.Name() != "kubernetes.io/fakeAttacher" {
|
||||
t.Errorf("Wrong name: %s", plugin.Name())
|
||||
}
|
||||
if !plugin.CanSupport(&volume.Spec{Volume: &api.Volume{VolumeSource: api.VolumeSource{FlexVolume: &api.FlexVolumeSource{Driver: "kubernetes.io/fakeAttacher"}}}}) {
|
||||
t.Errorf("Expected true")
|
||||
}
|
||||
if !plugin.CanSupport(&volume.Spec{PersistentVolume: &api.PersistentVolume{Spec: api.PersistentVolumeSpec{PersistentVolumeSource: api.PersistentVolumeSource{FlexVolume: &api.FlexVolumeSource{Driver: "kubernetes.io/fakeAttacher"}}}}}) {
|
||||
t.Errorf("Expected true")
|
||||
}
|
||||
if plugin.CanSupport(&volume.Spec{Volume: &api.Volume{VolumeSource: api.VolumeSource{}}}) {
|
||||
t.Errorf("Expected false")
|
||||
}
|
||||
}
|
||||
|
||||
func TestGetAccessModes(t *testing.T) {
|
||||
plugMgr := volume.VolumePluginMgr{}
|
||||
plugMgr.InitPlugins(ProbeVolumePlugins(testPluginPath), volume.NewFakeVolumeHost("fake", nil, nil))
|
||||
|
||||
plugin, err := plugMgr.FindPersistentPluginByName("kubernetes.io/fakeAttacher")
|
||||
if err != nil {
|
||||
t.Errorf("Can't find the plugin by name")
|
||||
}
|
||||
if !contains(plugin.GetAccessModes(), api.ReadWriteOnce) || !contains(plugin.GetAccessModes(), api.ReadOnlyMany) {
|
||||
t.Errorf("Expected two AccessModeTypes: %s and %s", api.ReadWriteOnce, api.ReadOnlyMany)
|
||||
}
|
||||
}
|
||||
|
||||
func contains(modes []api.PersistentVolumeAccessMode, mode api.PersistentVolumeAccessMode) bool {
|
||||
for _, m := range modes {
|
||||
if m == mode {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func doTestPluginAttachDetach(t *testing.T, spec *volume.Spec) {
|
||||
plugMgr := volume.VolumePluginMgr{}
|
||||
plugMgr.InitPlugins(ProbeVolumePlugins(testPluginPath), volume.NewFakeVolumeHost("/tmp/fake", nil, nil))
|
||||
plugin, err := plugMgr.FindPluginByName("kubernetes.io/fakeAttacher")
|
||||
if err != nil {
|
||||
t.Errorf("Can't find the plugin by name")
|
||||
}
|
||||
fake := &mount.FakeMounter{}
|
||||
pod := &api.Pod{ObjectMeta: api.ObjectMeta{UID: types.UID("poduid")}}
|
||||
builder, err := plugin.(*flexVolumePlugin).newBuilderInternal(spec, pod, &flexVolumeUtil{}, fake, exec.New(), "")
|
||||
volumePath := builder.GetPath()
|
||||
if err != nil {
|
||||
t.Errorf("Failed to make a new Builder: %v", err)
|
||||
}
|
||||
if builder == nil {
|
||||
t.Errorf("Got a nil Builder")
|
||||
}
|
||||
path := builder.GetPath()
|
||||
if path != "/tmp/fake/pods/poduid/volumes/kubernetes.io~fakeAttacher/vol1" {
|
||||
t.Errorf("Got unexpected path: %s", path)
|
||||
}
|
||||
if err := builder.SetUp(); err != nil {
|
||||
t.Errorf("Expected success, got: %v", err)
|
||||
}
|
||||
if _, err := os.Stat(volumePath); err != nil {
|
||||
if os.IsNotExist(err) {
|
||||
t.Errorf("SetUp() failed, volume path not created: %s", volumePath)
|
||||
} else {
|
||||
t.Errorf("SetUp() failed: %v", err)
|
||||
}
|
||||
}
|
||||
t.Logf("Setup successful")
|
||||
if builder.(*flexVolumeBuilder).readOnly {
|
||||
t.Errorf("The volume source should not be read-only and it is.")
|
||||
}
|
||||
|
||||
if len(fake.Log) != 1 {
|
||||
t.Errorf("Mount was not called exactly one time. It was called %d times.", len(fake.Log))
|
||||
} else {
|
||||
if fake.Log[0].Action != mount.FakeActionMount {
|
||||
t.Errorf("Unexpected mounter action: %#v", fake.Log[0])
|
||||
}
|
||||
}
|
||||
fake.ResetLog()
|
||||
|
||||
cleaner, err := plugin.(*flexVolumePlugin).newCleanerInternal("vol1", types.UID("poduid"), &flexVolumeUtil{}, fake, exec.New())
|
||||
if err != nil {
|
||||
t.Errorf("Failed to make a new Cleaner: %v", err)
|
||||
}
|
||||
if cleaner == nil {
|
||||
t.Errorf("Got a nil Cleaner")
|
||||
}
|
||||
if err := cleaner.TearDown(); err != nil {
|
||||
t.Errorf("Expected success, got: %v", err)
|
||||
}
|
||||
if _, err := os.Stat(volumePath); err == nil {
|
||||
t.Errorf("TearDown() failed, volume path still exists: %s", volumePath)
|
||||
} else if !os.IsNotExist(err) {
|
||||
t.Errorf("SetUp() failed: %v", err)
|
||||
}
|
||||
if len(fake.Log) != 1 {
|
||||
t.Errorf("Unmount was not called exactly one time. It was called %d times.", len(fake.Log))
|
||||
} else {
|
||||
if fake.Log[0].Action != mount.FakeActionUnmount {
|
||||
t.Errorf("Unexpected mounter action: %#v", fake.Log[0])
|
||||
}
|
||||
}
|
||||
|
||||
fake.ResetLog()
|
||||
}
|
||||
|
||||
func doTestPluginMountUnmount(t *testing.T, spec *volume.Spec) {
|
||||
plugMgr := volume.VolumePluginMgr{}
|
||||
installPluginUnderTest(t, "kubernetes.io", "fakeMounter", execScriptTempl2, nil)
|
||||
plugMgr.InitPlugins(ProbeVolumePlugins(testPluginPath), volume.NewFakeVolumeHost("/tmp/fake", nil, nil))
|
||||
plugin, err := plugMgr.FindPluginByName("kubernetes.io/fakeMounter")
|
||||
if err != nil {
|
||||
t.Errorf("Can't find the plugin by name")
|
||||
}
|
||||
fake := &mount.FakeMounter{}
|
||||
pod := &api.Pod{ObjectMeta: api.ObjectMeta{UID: types.UID("poduid")}}
|
||||
builder, err := plugin.(*flexVolumePlugin).newBuilderInternal(spec, pod, &flexVolumeUtil{}, fake, exec.New(), "")
|
||||
volumePath := builder.GetPath()
|
||||
if err != nil {
|
||||
t.Errorf("Failed to make a new Builder: %v", err)
|
||||
}
|
||||
if builder == nil {
|
||||
t.Errorf("Got a nil Builder")
|
||||
}
|
||||
path := builder.GetPath()
|
||||
if path != "/tmp/fake/pods/poduid/volumes/kubernetes.io~fakeMounter/vol1" {
|
||||
t.Errorf("Got unexpected path: %s", path)
|
||||
}
|
||||
if err := builder.SetUp(); err != nil {
|
||||
t.Errorf("Expected success, got: %v", err)
|
||||
}
|
||||
if _, err := os.Stat(volumePath); err != nil {
|
||||
if os.IsNotExist(err) {
|
||||
t.Errorf("SetUp() failed, volume path not created: %s", volumePath)
|
||||
} else {
|
||||
t.Errorf("SetUp() failed: %v", err)
|
||||
}
|
||||
}
|
||||
t.Logf("Setup successful")
|
||||
if builder.(*flexVolumeBuilder).readOnly {
|
||||
t.Errorf("The volume source should not be read-only and it is.")
|
||||
}
|
||||
|
||||
cleaner, err := plugin.(*flexVolumePlugin).newCleanerInternal("vol1", types.UID("poduid"), &flexVolumeUtil{}, fake, exec.New())
|
||||
if err != nil {
|
||||
t.Errorf("Failed to make a new Cleaner: %v", err)
|
||||
}
|
||||
if cleaner == nil {
|
||||
t.Errorf("Got a nil Cleaner")
|
||||
}
|
||||
if err := cleaner.TearDown(); err != nil {
|
||||
t.Errorf("Expected success, got: %v", err)
|
||||
}
|
||||
if _, err := os.Stat(volumePath); err == nil {
|
||||
t.Errorf("TearDown() failed, volume path still exists: %s", volumePath)
|
||||
} else if !os.IsNotExist(err) {
|
||||
t.Errorf("SetUp() failed: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestPluginVolumeAttacher(t *testing.T) {
|
||||
vol := &api.Volume{
|
||||
Name: "vol1",
|
||||
VolumeSource: api.VolumeSource{FlexVolume: &api.FlexVolumeSource{Driver: "kubernetes.io/fakeAttacher", ReadOnly: false}},
|
||||
}
|
||||
doTestPluginAttachDetach(t, volume.NewSpecFromVolume(vol))
|
||||
}
|
||||
|
||||
func TestPluginVolumeMounter(t *testing.T) {
|
||||
vol := &api.Volume{
|
||||
Name: "vol1",
|
||||
VolumeSource: api.VolumeSource{FlexVolume: &api.FlexVolumeSource{Driver: "kubernetes.io/fakeMounter", ReadOnly: false}},
|
||||
}
|
||||
doTestPluginMountUnmount(t, volume.NewSpecFromVolume(vol))
|
||||
}
|
||||
|
||||
func TestPluginPersistentVolume(t *testing.T) {
|
||||
vol := &api.PersistentVolume{
|
||||
ObjectMeta: api.ObjectMeta{
|
||||
Name: "vol1",
|
||||
},
|
||||
Spec: api.PersistentVolumeSpec{
|
||||
PersistentVolumeSource: api.PersistentVolumeSource{
|
||||
FlexVolume: &api.FlexVolumeSource{Driver: "kubernetes.io/fakeAttacher", ReadOnly: false},
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
doTestPluginAttachDetach(t, volume.NewSpecFromPersistentVolume(vol, false))
|
||||
}
|
||||
Reference in New Issue
Block a user