418 lines
12 KiB
Go
418 lines
12 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package flexvolume
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import (
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"bytes"
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"encoding/base64"
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"fmt"
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"os"
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"path"
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"testing"
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"text/template"
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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/api/v1"
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"k8s.io/kubernetes/pkg/util/exec"
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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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const execScriptTempl1 = `#!/bin/bash
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if [ "$1" == "init" -a $# -eq 1 ]; then
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echo -n '{
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"status": "Success"
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}'
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exit 0
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fi
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PATH=$2
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if [ "$1" == "attach" -a $# -eq 2 ]; then
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echo -n '{
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"device": "{{.DevicePath}}",
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"status": "Success"
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}'
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exit 0
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elif [ "$1" == "detach" -a $# -eq 2 ]; then
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echo -n '{
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"status": "Success"
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}'
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exit 0
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elif [ "$1" == "mount" -a $# -eq 4 ]; then
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echo -n '{
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"status": "Not supported"
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}'
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exit 0
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elif [ "$1" == "unmount" -a $# -eq 2 ]; then
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echo -n '{
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"status": "Not supported"
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}'
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exit 0
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fi
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echo -n '{
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"status": "Failure",
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"reason": "Invalid usage"
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}'
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exit 1
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# Direct the arguments to a file to be tested against later
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echo -n $@ &> {{.OutputFile}}
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`
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const execScriptTempl2 = `#!/bin/bash
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if [ "$1" == "init" -a $# -eq 1 ]; then
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echo -n '{
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"status": "Success"
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}'
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exit 0
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fi
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if [ "$1" == "attach" -a $# -eq 2 ]; then
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echo -n '{
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"status": "Not supported"
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}'
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exit 0
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elif [ "$1" == "detach" -a $# -eq 2 ]; then
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echo -n '{
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"status": "Not supported"
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}'
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exit 0
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elif [ "$1" == "mount" -a $# -eq 4 ]; then
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PATH=$2
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/bin/mkdir -p $PATH
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if [ $? -ne 0 ]; then
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echo -n '{
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"status": "Failure",
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"reason": "Failed to create $PATH"
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}'
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exit 1
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fi
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echo -n '{
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"status": "Success"
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}'
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exit 0
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elif [ "$1" == "unmount" -a $# -eq 2 ]; then
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PATH=$2
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/bin/rm -r $PATH
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if [ $? -ne 0 ]; then
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echo -n '{
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"status": "Failure",
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"reason": "Failed to cleanup $PATH"
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}'
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exit 1
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fi
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echo -n '{
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"status": "Success"
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}'
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exit 0
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fi
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echo -n '{
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"status": "Failure",
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"reason": "Invalid usage"
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}'
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exit 1
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# Direct the arguments to a file to be tested against later
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echo -n $@ &> {{.OutputFile}}
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`
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func installPluginUnderTest(t *testing.T, vendorName, plugName, tmpDir string, execScriptTempl string, execTemplateData *map[string]interface{}) {
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vendoredName := plugName
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if vendorName != "" {
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vendoredName = fmt.Sprintf("%s~%s", vendorName, plugName)
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}
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pluginDir := path.Join(tmpDir, vendoredName)
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err := os.MkdirAll(pluginDir, 0777)
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if err != nil {
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t.Errorf("Failed to create plugin: %v", err)
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}
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pluginExec := path.Join(pluginDir, plugName)
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f, err := os.Create(pluginExec)
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if err != nil {
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t.Errorf("Failed to install plugin")
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}
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err = f.Chmod(0777)
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if err != nil {
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t.Errorf("Failed to set exec perms on plugin")
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}
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if execTemplateData == nil {
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execTemplateData = &map[string]interface{}{
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"DevicePath": "/dev/sdx",
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"OutputFile": path.Join(pluginDir, plugName+".out"),
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}
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}
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tObj := template.Must(template.New("test").Parse(execScriptTempl))
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buf := &bytes.Buffer{}
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if err := tObj.Execute(buf, *execTemplateData); err != nil {
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t.Errorf("Error in executing script template - %v", err)
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}
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execScript := buf.String()
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_, err = f.WriteString(execScript)
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if err != nil {
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t.Errorf("Failed to write plugin exec")
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}
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f.Close()
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}
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func TestCanSupport(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("flexvolume_test")
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if err != nil {
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t.Fatalf("error creating 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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installPluginUnderTest(t, "kubernetes.io", "fakeAttacher", tmpDir, execScriptTempl1, nil)
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plugMgr.InitPlugins(ProbeVolumePlugins(tmpDir), volumetest.NewFakeVolumeHost("fake", nil, nil))
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plugin, err := plugMgr.FindPluginByName("kubernetes.io/fakeAttacher")
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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 plugin.GetPluginName() != "kubernetes.io/fakeAttacher" {
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t.Errorf("Wrong name: %s", plugin.GetPluginName())
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}
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if !plugin.CanSupport(&volume.Spec{Volume: &v1.Volume{VolumeSource: v1.VolumeSource{FlexVolume: &v1.FlexVolumeSource{Driver: "kubernetes.io/fakeAttacher"}}}}) {
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t.Errorf("Expected true")
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}
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if !plugin.CanSupport(&volume.Spec{PersistentVolume: &v1.PersistentVolume{Spec: v1.PersistentVolumeSpec{PersistentVolumeSource: v1.PersistentVolumeSource{FlexVolume: &v1.FlexVolumeSource{Driver: "kubernetes.io/fakeAttacher"}}}}}) {
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t.Errorf("Expected true")
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}
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if plugin.CanSupport(&volume.Spec{Volume: &v1.Volume{VolumeSource: v1.VolumeSource{}}}) {
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t.Errorf("Expected false")
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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("flexvolume_test")
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if err != nil {
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t.Fatalf("error creating 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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installPluginUnderTest(t, "kubernetes.io", "fakeAttacher", tmpDir, execScriptTempl1, nil)
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plugMgr.InitPlugins(ProbeVolumePlugins(tmpDir), volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
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plugin, err := plugMgr.FindPersistentPluginByName("kubernetes.io/fakeAttacher")
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if err != nil {
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t.Fatalf("Can't find the plugin by name")
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}
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if !contains(plugin.GetAccessModes(), v1.ReadWriteOnce) || !contains(plugin.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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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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func doTestPluginAttachDetach(t *testing.T, spec *volume.Spec, tmpDir string) {
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plugMgr := volume.VolumePluginMgr{}
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installPluginUnderTest(t, "kubernetes.io", "fakeAttacher", tmpDir, execScriptTempl1, nil)
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plugMgr.InitPlugins(ProbeVolumePlugins(tmpDir), volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
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plugin, err := plugMgr.FindPluginByName("kubernetes.io/fakeAttacher")
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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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fake := &mount.FakeMounter{}
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pod := &v1.Pod{ObjectMeta: metav1.ObjectMeta{UID: types.UID("poduid")}}
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secretMap := make(map[string]string)
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secretMap["flexsecret"] = base64.StdEncoding.EncodeToString([]byte("foo"))
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mounter, err := plugin.(*flexVolumePlugin).newMounterInternal(spec, pod, &flexVolumeUtil{}, fake, exec.New(), secretMap)
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volumePath := mounter.GetPath()
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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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path := mounter.GetPath()
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expectedPath := fmt.Sprintf("%s/pods/poduid/volumes/kubernetes.io~fakeAttacher/vol1", tmpDir)
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if path != expectedPath {
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t.Errorf("Unexpected path, expected %q, got: %q", expectedPath, 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(volumePath); err != nil {
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if os.IsNotExist(err) {
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t.Errorf("SetUp() failed, volume path not created: %s", volumePath)
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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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t.Logf("Setup successful")
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if mounter.(*flexVolumeMounter).readOnly {
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t.Errorf("The volume source should not be read-only and it is.")
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}
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if len(fake.Log) != 1 {
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t.Errorf("Mount was not called exactly one time. It was called %d times.", len(fake.Log))
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} else {
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if fake.Log[0].Action != mount.FakeActionMount {
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t.Errorf("Unexpected mounter action: %#v", fake.Log[0])
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}
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}
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fake.ResetLog()
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unmounter, err := plugin.(*flexVolumePlugin).newUnmounterInternal("vol1", types.UID("poduid"), &flexVolumeUtil{}, fake, exec.New())
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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(volumePath); err == nil {
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t.Errorf("TearDown() failed, volume path still exists: %s", volumePath)
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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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if len(fake.Log) != 1 {
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t.Errorf("Unmount was not called exactly one time. It was called %d times.", len(fake.Log))
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} else {
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if fake.Log[0].Action != mount.FakeActionUnmount {
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t.Errorf("Unexpected mounter action: %#v", fake.Log[0])
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}
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}
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fake.ResetLog()
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}
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func doTestPluginMountUnmount(t *testing.T, spec *volume.Spec, tmpDir string) {
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tmpDir, err := utiltesting.MkTmpdir("flexvolume_test")
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if err != nil {
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t.Fatalf("error creating 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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installPluginUnderTest(t, "kubernetes.io", "fakeMounter", tmpDir, execScriptTempl2, nil)
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plugMgr.InitPlugins(ProbeVolumePlugins(tmpDir), volumetest.NewFakeVolumeHost(tmpDir, nil, nil))
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plugin, err := plugMgr.FindPluginByName("kubernetes.io/fakeMounter")
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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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fake := &mount.FakeMounter{}
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pod := &v1.Pod{ObjectMeta: metav1.ObjectMeta{UID: types.UID("poduid")}}
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// Use nil secret to test for nil secret case.
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mounter, err := plugin.(*flexVolumePlugin).newMounterInternal(spec, pod, &flexVolumeUtil{}, fake, exec.New(), nil)
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volumePath := mounter.GetPath()
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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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path := mounter.GetPath()
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expectedPath := fmt.Sprintf("%s/pods/poduid/volumes/kubernetes.io~fakeMounter/vol1", tmpDir)
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if path != expectedPath {
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t.Errorf("Unexpected path, expected %q, got: %q", expectedPath, 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(volumePath); err != nil {
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if os.IsNotExist(err) {
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t.Errorf("SetUp() failed, volume path not created: %s", volumePath)
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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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t.Logf("Setup successful")
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if mounter.(*flexVolumeMounter).readOnly {
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t.Errorf("The volume source should not be read-only and it is.")
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}
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unmounter, err := plugin.(*flexVolumePlugin).newUnmounterInternal("vol1", types.UID("poduid"), &flexVolumeUtil{}, fake, exec.New())
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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(volumePath); err == nil {
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t.Errorf("TearDown() failed, volume path still exists: %s", volumePath)
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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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}
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func TestPluginVolumeAttacher(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("flexvolume_test")
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if err != nil {
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t.Fatalf("error creating temp dir: %v", err)
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}
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defer os.RemoveAll(tmpDir)
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vol := &v1.Volume{
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Name: "vol1",
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VolumeSource: v1.VolumeSource{FlexVolume: &v1.FlexVolumeSource{Driver: "kubernetes.io/fakeAttacher", ReadOnly: false}},
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}
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doTestPluginAttachDetach(t, volume.NewSpecFromVolume(vol), tmpDir)
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}
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func TestPluginVolumeMounter(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("flexvolume_test")
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if err != nil {
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t.Fatalf("error creating temp dir: %v", err)
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}
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defer os.RemoveAll(tmpDir)
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vol := &v1.Volume{
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Name: "vol1",
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VolumeSource: v1.VolumeSource{FlexVolume: &v1.FlexVolumeSource{Driver: "kubernetes.io/fakeMounter", ReadOnly: false}},
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}
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doTestPluginMountUnmount(t, volume.NewSpecFromVolume(vol), tmpDir)
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}
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func TestPluginPersistentVolume(t *testing.T) {
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tmpDir, err := utiltesting.MkTmpdir("flexvolume_test")
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if err != nil {
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t.Fatalf("error creating temp dir: %v", err)
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}
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defer os.RemoveAll(tmpDir)
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vol := &v1.PersistentVolume{
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ObjectMeta: metav1.ObjectMeta{
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Name: "vol1",
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},
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Spec: v1.PersistentVolumeSpec{
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PersistentVolumeSource: v1.PersistentVolumeSource{
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FlexVolume: &v1.FlexVolumeSource{Driver: "kubernetes.io/fakeAttacher", ReadOnly: false},
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},
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},
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}
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doTestPluginAttachDetach(t, volume.NewSpecFromPersistentVolume(vol, false), tmpDir)
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}
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