611 lines
16 KiB
Go
611 lines
16 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 configmap
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path"
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"reflect"
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"strings"
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"testing"
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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/kubernetes/pkg/api/v1"
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"k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
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"k8s.io/kubernetes/pkg/client/clientset_generated/clientset/fake"
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"k8s.io/kubernetes/pkg/volume"
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"k8s.io/kubernetes/pkg/volume/empty_dir"
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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 TestMakePayload(t *testing.T) {
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caseMappingMode := int32(0400)
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cases := []struct {
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name string
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mappings []v1.KeyToPath
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configMap *v1.ConfigMap
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mode int32
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optional bool
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payload map[string]util.FileProjection
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success bool
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}{
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{
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name: "no overrides",
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configMap: &v1.ConfigMap{
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Data: map[string]string{
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"foo": "foo",
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"bar": "bar",
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},
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},
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mode: 0644,
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payload: map[string]util.FileProjection{
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"foo": {Data: []byte("foo"), Mode: 0644},
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"bar": {Data: []byte("bar"), Mode: 0644},
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},
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success: true,
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},
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{
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name: "basic 1",
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mappings: []v1.KeyToPath{
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{
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Key: "foo",
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Path: "path/to/foo.txt",
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},
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},
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configMap: &v1.ConfigMap{
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Data: map[string]string{
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"foo": "foo",
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"bar": "bar",
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},
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},
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mode: 0644,
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payload: map[string]util.FileProjection{
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"path/to/foo.txt": {Data: []byte("foo"), Mode: 0644},
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},
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success: true,
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},
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{
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name: "subdirs",
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mappings: []v1.KeyToPath{
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{
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Key: "foo",
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Path: "path/to/1/2/3/foo.txt",
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},
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},
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configMap: &v1.ConfigMap{
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Data: map[string]string{
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"foo": "foo",
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"bar": "bar",
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},
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},
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mode: 0644,
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payload: map[string]util.FileProjection{
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"path/to/1/2/3/foo.txt": {Data: []byte("foo"), Mode: 0644},
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},
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success: true,
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},
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{
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name: "subdirs 2",
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mappings: []v1.KeyToPath{
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{
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Key: "foo",
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Path: "path/to/1/2/3/foo.txt",
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},
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},
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configMap: &v1.ConfigMap{
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Data: map[string]string{
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"foo": "foo",
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"bar": "bar",
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},
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},
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mode: 0644,
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payload: map[string]util.FileProjection{
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"path/to/1/2/3/foo.txt": {Data: []byte("foo"), Mode: 0644},
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},
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success: true,
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},
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{
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name: "subdirs 3",
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mappings: []v1.KeyToPath{
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{
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Key: "foo",
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Path: "path/to/1/2/3/foo.txt",
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},
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{
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Key: "bar",
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Path: "another/path/to/the/esteemed/bar.bin",
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},
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},
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configMap: &v1.ConfigMap{
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Data: map[string]string{
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"foo": "foo",
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"bar": "bar",
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},
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},
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mode: 0644,
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payload: map[string]util.FileProjection{
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"path/to/1/2/3/foo.txt": {Data: []byte("foo"), Mode: 0644},
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"another/path/to/the/esteemed/bar.bin": {Data: []byte("bar"), Mode: 0644},
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},
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success: true,
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},
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{
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name: "non existent key",
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mappings: []v1.KeyToPath{
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{
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Key: "zab",
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Path: "path/to/foo.txt",
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},
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},
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configMap: &v1.ConfigMap{
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Data: map[string]string{
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"foo": "foo",
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"bar": "bar",
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},
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},
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mode: 0644,
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success: false,
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},
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{
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name: "mapping with Mode",
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mappings: []v1.KeyToPath{
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{
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Key: "foo",
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Path: "foo.txt",
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Mode: &caseMappingMode,
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},
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{
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Key: "bar",
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Path: "bar.bin",
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Mode: &caseMappingMode,
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},
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},
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configMap: &v1.ConfigMap{
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Data: map[string]string{
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"foo": "foo",
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"bar": "bar",
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},
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},
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mode: 0644,
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payload: map[string]util.FileProjection{
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"foo.txt": {Data: []byte("foo"), Mode: caseMappingMode},
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"bar.bin": {Data: []byte("bar"), Mode: caseMappingMode},
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},
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success: true,
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},
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{
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name: "mapping with defaultMode",
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mappings: []v1.KeyToPath{
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{
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Key: "foo",
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Path: "foo.txt",
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},
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{
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Key: "bar",
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Path: "bar.bin",
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},
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},
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configMap: &v1.ConfigMap{
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Data: map[string]string{
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"foo": "foo",
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"bar": "bar",
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},
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},
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mode: 0644,
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payload: map[string]util.FileProjection{
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"foo.txt": {Data: []byte("foo"), Mode: 0644},
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"bar.bin": {Data: []byte("bar"), Mode: 0644},
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},
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success: true,
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},
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{
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name: "optional non existent key",
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mappings: []v1.KeyToPath{
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{
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Key: "zab",
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Path: "path/to/foo.txt",
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},
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},
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configMap: &v1.ConfigMap{
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Data: map[string]string{
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"foo": "foo",
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"bar": "bar",
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},
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},
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mode: 0644,
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optional: true,
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payload: map[string]util.FileProjection{},
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success: true,
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},
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}
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for _, tc := range cases {
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actualPayload, err := makePayload(tc.mappings, tc.configMap, &tc.mode, tc.optional)
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if err != nil && tc.success {
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t.Errorf("%v: unexpected failure making payload: %v", tc.name, err)
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continue
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}
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if err == nil && !tc.success {
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t.Errorf("%v: unexpected success making payload", tc.name)
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continue
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}
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if !tc.success {
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continue
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}
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if e, a := tc.payload, actualPayload; !reflect.DeepEqual(e, a) {
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t.Errorf("%v: expected and actual payload do not match", tc.name)
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}
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}
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}
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func newTestHost(t *testing.T, clientset clientset.Interface) (string, volume.VolumeHost) {
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tempDir, err := ioutil.TempDir("/tmp", "configmap_volume_test.")
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if err != nil {
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t.Fatalf("can't make a temp rootdir: %v", err)
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}
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return tempDir, volumetest.NewFakeVolumeHost(tempDir, clientset, empty_dir.ProbeVolumePlugins())
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}
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func TestCanSupport(t *testing.T) {
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pluginMgr := volume.VolumePluginMgr{}
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tempDir, host := newTestHost(t, nil)
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defer os.RemoveAll(tempDir)
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pluginMgr.InitPlugins(ProbeVolumePlugins(), host)
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plugin, err := pluginMgr.FindPluginByName(configMapPluginName)
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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() != configMapPluginName {
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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{ConfigMap: &v1.ConfigMapVolumeSource{LocalObjectReference: v1.LocalObjectReference{Name: ""}}}}}) {
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t.Errorf("Expected true")
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}
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if plugin.CanSupport(&volume.Spec{}) {
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t.Errorf("Expected false")
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}
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}
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func TestPlugin(t *testing.T) {
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var (
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testPodUID = types.UID("test_pod_uid")
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testVolumeName = "test_volume_name"
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testNamespace = "test_configmap_namespace"
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testName = "test_configmap_name"
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volumeSpec = volumeSpec(testVolumeName, testName, 0644)
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configMap = configMap(testNamespace, testName)
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client = fake.NewSimpleClientset(&configMap)
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pluginMgr = volume.VolumePluginMgr{}
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tempDir, host = newTestHost(t, client)
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)
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defer os.RemoveAll(tempDir)
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pluginMgr.InitPlugins(ProbeVolumePlugins(), host)
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plugin, err := pluginMgr.FindPluginByName(configMapPluginName)
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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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pod := &v1.Pod{ObjectMeta: metav1.ObjectMeta{Namespace: testNamespace, UID: testPodUID}}
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mounter, err := plugin.NewMounter(volume.NewSpecFromVolume(volumeSpec), pod, volume.VolumeOptions{})
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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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vName, err := plugin.GetVolumeName(volume.NewSpecFromVolume(volumeSpec))
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if err != nil {
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t.Errorf("Failed to GetVolumeName: %v", err)
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}
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if vName != "test_volume_name/test_configmap_name" {
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t.Errorf("Got unexpect VolumeName %v", vName)
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}
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volumePath := mounter.GetPath()
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if !strings.HasSuffix(volumePath, fmt.Sprintf("pods/test_pod_uid/volumes/kubernetes.io~configmap/test_volume_name")) {
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t.Errorf("Got unexpected path: %s", volumePath)
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}
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fsGroup := int64(1001)
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err = mounter.SetUp(&fsGroup)
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if err != nil {
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t.Errorf("Failed to setup volume: %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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doTestConfigMapDataInVolume(volumePath, configMap, t)
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doTestCleanAndTeardown(plugin, testPodUID, testVolumeName, volumePath, t)
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}
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// Test the case where the plugin's ready file exists, but the volume dir is not a
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// mountpoint, which is the state the system will be in after reboot. The dir
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// should be mounter and the configMap data written to it.
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func TestPluginReboot(t *testing.T) {
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var (
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testPodUID = types.UID("test_pod_uid3")
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testVolumeName = "test_volume_name"
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testNamespace = "test_configmap_namespace"
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testName = "test_configmap_name"
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volumeSpec = volumeSpec(testVolumeName, testName, 0644)
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configMap = configMap(testNamespace, testName)
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client = fake.NewSimpleClientset(&configMap)
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pluginMgr = volume.VolumePluginMgr{}
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rootDir, host = newTestHost(t, client)
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)
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defer os.RemoveAll(rootDir)
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pluginMgr.InitPlugins(ProbeVolumePlugins(), host)
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plugin, err := pluginMgr.FindPluginByName(configMapPluginName)
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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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pod := &v1.Pod{ObjectMeta: metav1.ObjectMeta{Namespace: testNamespace, UID: testPodUID}}
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mounter, err := plugin.NewMounter(volume.NewSpecFromVolume(volumeSpec), pod, volume.VolumeOptions{})
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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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podMetadataDir := fmt.Sprintf("%v/pods/test_pod_uid3/plugins/kubernetes.io~configmap/test_volume_name", rootDir)
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util.SetReady(podMetadataDir)
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volumePath := mounter.GetPath()
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if !strings.HasSuffix(volumePath, fmt.Sprintf("pods/test_pod_uid3/volumes/kubernetes.io~configmap/test_volume_name")) {
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t.Errorf("Got unexpected path: %s", volumePath)
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}
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fsGroup := int64(1001)
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err = mounter.SetUp(&fsGroup)
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if err != nil {
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t.Errorf("Failed to setup volume: %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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doTestConfigMapDataInVolume(volumePath, configMap, t)
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doTestCleanAndTeardown(plugin, testPodUID, testVolumeName, volumePath, t)
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}
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func TestPluginOptional(t *testing.T) {
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var (
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testPodUID = types.UID("test_pod_uid")
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testVolumeName = "test_volume_name"
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testNamespace = "test_configmap_namespace"
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testName = "test_configmap_name"
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trueVal = true
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volumeSpec = volumeSpec(testVolumeName, testName, 0644)
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client = fake.NewSimpleClientset()
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pluginMgr = volume.VolumePluginMgr{}
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tempDir, host = newTestHost(t, client)
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)
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volumeSpec.VolumeSource.ConfigMap.Optional = &trueVal
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defer os.RemoveAll(tempDir)
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pluginMgr.InitPlugins(ProbeVolumePlugins(), host)
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plugin, err := pluginMgr.FindPluginByName(configMapPluginName)
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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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pod := &v1.Pod{ObjectMeta: metav1.ObjectMeta{Namespace: testNamespace, UID: testPodUID}}
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mounter, err := plugin.NewMounter(volume.NewSpecFromVolume(volumeSpec), pod, volume.VolumeOptions{})
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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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vName, err := plugin.GetVolumeName(volume.NewSpecFromVolume(volumeSpec))
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if err != nil {
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t.Errorf("Failed to GetVolumeName: %v", err)
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}
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if vName != "test_volume_name/test_configmap_name" {
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t.Errorf("Got unexpect VolumeName %v", vName)
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}
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volumePath := mounter.GetPath()
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if !strings.HasSuffix(volumePath, fmt.Sprintf("pods/test_pod_uid/volumes/kubernetes.io~configmap/test_volume_name")) {
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t.Errorf("Got unexpected path: %s", volumePath)
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}
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fsGroup := int64(1001)
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err = mounter.SetUp(&fsGroup)
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if err != nil {
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t.Errorf("Failed to setup volume: %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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infos, err := ioutil.ReadDir(volumePath)
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if err != nil {
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t.Fatalf("couldn't find volume path, %s", volumePath)
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}
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if len(infos) != 0 {
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t.Errorf("empty directory, %s, not found", volumePath)
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}
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doTestCleanAndTeardown(plugin, testPodUID, testVolumeName, volumePath, t)
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}
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func TestPluginKeysOptional(t *testing.T) {
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var (
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testPodUID = types.UID("test_pod_uid")
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testVolumeName = "test_volume_name"
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testNamespace = "test_configmap_namespace"
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testName = "test_configmap_name"
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trueVal = true
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volumeSpec = volumeSpec(testVolumeName, testName, 0644)
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configMap = configMap(testNamespace, testName)
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client = fake.NewSimpleClientset(&configMap)
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pluginMgr = volume.VolumePluginMgr{}
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tempDir, host = newTestHost(t, client)
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)
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volumeSpec.VolumeSource.ConfigMap.Items = []v1.KeyToPath{
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{Key: "data-1", Path: "data-1"},
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{Key: "data-2", Path: "data-2"},
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{Key: "data-3", Path: "data-3"},
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{Key: "missing", Path: "missing"},
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}
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volumeSpec.VolumeSource.ConfigMap.Optional = &trueVal
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defer os.RemoveAll(tempDir)
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pluginMgr.InitPlugins(ProbeVolumePlugins(), host)
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plugin, err := pluginMgr.FindPluginByName(configMapPluginName)
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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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pod := &v1.Pod{ObjectMeta: metav1.ObjectMeta{Namespace: testNamespace, UID: testPodUID}}
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mounter, err := plugin.NewMounter(volume.NewSpecFromVolume(volumeSpec), pod, volume.VolumeOptions{})
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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")
|
|
}
|
|
|
|
vName, err := plugin.GetVolumeName(volume.NewSpecFromVolume(volumeSpec))
|
|
if err != nil {
|
|
t.Errorf("Failed to GetVolumeName: %v", err)
|
|
}
|
|
if vName != "test_volume_name/test_configmap_name" {
|
|
t.Errorf("Got unexpect VolumeName %v", vName)
|
|
}
|
|
|
|
volumePath := mounter.GetPath()
|
|
if !strings.HasSuffix(volumePath, fmt.Sprintf("pods/test_pod_uid/volumes/kubernetes.io~configmap/test_volume_name")) {
|
|
t.Errorf("Got unexpected path: %s", volumePath)
|
|
}
|
|
|
|
fsGroup := int64(1001)
|
|
err = mounter.SetUp(&fsGroup)
|
|
if err != nil {
|
|
t.Errorf("Failed to setup volume: %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)
|
|
}
|
|
}
|
|
|
|
doTestConfigMapDataInVolume(volumePath, configMap, t)
|
|
doTestCleanAndTeardown(plugin, testPodUID, testVolumeName, volumePath, t)
|
|
}
|
|
|
|
func volumeSpec(volumeName, configMapName string, defaultMode int32) *v1.Volume {
|
|
return &v1.Volume{
|
|
Name: volumeName,
|
|
VolumeSource: v1.VolumeSource{
|
|
ConfigMap: &v1.ConfigMapVolumeSource{
|
|
LocalObjectReference: v1.LocalObjectReference{
|
|
Name: configMapName,
|
|
},
|
|
DefaultMode: &defaultMode,
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func configMap(namespace, name string) v1.ConfigMap {
|
|
return v1.ConfigMap{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Namespace: namespace,
|
|
Name: name,
|
|
},
|
|
Data: map[string]string{
|
|
"data-1": "value-1",
|
|
"data-2": "value-2",
|
|
"data-3": "value-3",
|
|
},
|
|
}
|
|
}
|
|
|
|
func doTestConfigMapDataInVolume(volumePath string, configMap v1.ConfigMap, t *testing.T) {
|
|
for key, value := range configMap.Data {
|
|
configMapDataHostPath := path.Join(volumePath, key)
|
|
if _, err := os.Stat(configMapDataHostPath); err != nil {
|
|
t.Fatalf("SetUp() failed, couldn't find configMap data on disk: %v", configMapDataHostPath)
|
|
} else {
|
|
actualValue, err := ioutil.ReadFile(configMapDataHostPath)
|
|
if err != nil {
|
|
t.Fatalf("Couldn't read configMap data from: %v", configMapDataHostPath)
|
|
}
|
|
|
|
if value != string(actualValue) {
|
|
t.Errorf("Unexpected value; expected %q, got %q", value, actualValue)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func doTestCleanAndTeardown(plugin volume.VolumePlugin, podUID types.UID, testVolumeName, volumePath string, t *testing.T) {
|
|
unmounter, err := plugin.NewUnmounter(testVolumeName, podUID)
|
|
if err != nil {
|
|
t.Errorf("Failed to make a new Unmounter: %v", err)
|
|
}
|
|
if unmounter == nil {
|
|
t.Errorf("Got a nil Unmounter")
|
|
}
|
|
|
|
if err := unmounter.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)
|
|
}
|
|
}
|