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622 lines
19 KiB
Go
622 lines
19 KiB
Go
// +build !providerless
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/*
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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 gcepd
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import (
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"errors"
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"fmt"
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"testing"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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"k8s.io/apimachinery/pkg/util/sets"
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cloudprovider "k8s.io/cloud-provider"
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cloudvolume "k8s.io/cloud-provider/volume"
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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/legacy-cloud-providers/gce"
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"strings"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/klog/v2"
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)
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func TestGetDeviceName_Volume(t *testing.T) {
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plugin := newPlugin(t)
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name := "my-pd-volume"
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spec := createVolSpec(name, false)
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deviceName, err := plugin.GetVolumeName(spec)
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if err != nil {
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t.Errorf("GetDeviceName error: %v", err)
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}
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if deviceName != name {
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t.Errorf("GetDeviceName error: expected %s, got %s", name, deviceName)
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}
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}
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func TestGetDeviceName_PersistentVolume(t *testing.T) {
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plugin := newPlugin(t)
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name := "my-pd-pv"
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spec := createPVSpec(name, true, nil)
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deviceName, err := plugin.GetVolumeName(spec)
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if err != nil {
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t.Errorf("GetDeviceName error: %v", err)
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}
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if deviceName != name {
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t.Errorf("GetDeviceName error: expected %s, got %s", name, deviceName)
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}
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}
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// One testcase for TestAttachDetach table test below
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type testcase struct {
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name string
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// For fake GCE:
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attach attachCall
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detach detachCall
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diskIsAttached diskIsAttachedCall
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t *testing.T
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// Actual test to run
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test func(test *testcase) error
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// Expected return of the test
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expectedReturn error
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}
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func TestAttachDetachRegional(t *testing.T) {
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diskName := "disk"
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nodeName := types.NodeName("instance")
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readOnly := false
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regional := true
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spec := createPVSpec(diskName, readOnly, []string{"zone1", "zone2"})
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// Successful Attach call
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testcase := testcase{
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name: "Attach_Regional_Positive",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName: {diskName}}, nil},
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attach: attachCall{diskName, nodeName, readOnly, regional, nil},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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devicePath, err := attacher.Attach(spec, nodeName)
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if devicePath != "/dev/disk/by-id/google-disk" {
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return fmt.Errorf("devicePath incorrect. Expected<\"/dev/disk/by-id/google-disk\"> Actual: <%q>", devicePath)
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}
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return err
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},
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}
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err := testcase.test(&testcase)
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if err != testcase.expectedReturn {
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t.Errorf("%s failed: expected err=%v, got %v", testcase.name, testcase.expectedReturn, err)
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}
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}
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func TestAttachDetach(t *testing.T) {
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diskName := "disk"
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nodeName := types.NodeName("instance")
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readOnly := false
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regional := false
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spec := createVolSpec(diskName, readOnly)
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attachError := errors.New("Fake attach error")
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detachError := errors.New("Fake detach error")
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diskCheckError := errors.New("Fake DiskIsAttached error")
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tests := []testcase{
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// Successful Attach call
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{
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name: "Attach_Positive",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName: {}}, nil},
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attach: attachCall{diskName, nodeName, readOnly, regional, nil},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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devicePath, err := attacher.Attach(spec, nodeName)
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if devicePath != "/dev/disk/by-id/google-disk" {
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return fmt.Errorf("devicePath incorrect. Expected<\"/dev/disk/by-id/google-disk\"> Actual: <%q>", devicePath)
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}
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return err
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},
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},
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// Disk is already attached
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{
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name: "Attach_Positive_AlreadyAttached",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName: {diskName}}, nil},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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devicePath, err := attacher.Attach(spec, nodeName)
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if devicePath != "/dev/disk/by-id/google-disk" {
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return fmt.Errorf("devicePath incorrect. Expected<\"/dev/disk/by-id/google-disk\"> Actual: <%q>", devicePath)
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}
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return err
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},
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},
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// DiskIsAttached fails and Attach succeeds
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{
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name: "Attach_Positive_CheckFails",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName: {}}, diskCheckError},
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attach: attachCall{diskName, nodeName, readOnly, regional, nil},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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devicePath, err := attacher.Attach(spec, nodeName)
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if devicePath != "/dev/disk/by-id/google-disk" {
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return fmt.Errorf("devicePath incorrect. Expected<\"/dev/disk/by-id/google-disk\"> Actual: <%q>", devicePath)
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}
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return err
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},
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},
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// Attach call fails
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{
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name: "Attach_Negative",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName: {}}, diskCheckError},
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attach: attachCall{diskName, nodeName, readOnly, regional, attachError},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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devicePath, err := attacher.Attach(spec, nodeName)
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if devicePath != "" {
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return fmt.Errorf("devicePath incorrect. Expected<\"\"> Actual: <%q>", devicePath)
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}
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return err
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},
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expectedReturn: attachError,
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},
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// Detach succeeds
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{
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name: "Detach_Positive",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName: {diskName}}, nil},
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detach: detachCall{diskName, nodeName, nil},
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test: func(testcase *testcase) error {
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detacher := newDetacher(testcase)
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return detacher.Detach(diskName, nodeName)
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},
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},
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// Disk is already detached
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{
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name: "Detach_Positive_AlreadyDetached",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName: {}}, nil},
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test: func(testcase *testcase) error {
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detacher := newDetacher(testcase)
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return detacher.Detach(diskName, nodeName)
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},
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},
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// Detach succeeds when DiskIsAttached fails
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{
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name: "Detach_Positive_CheckFails",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName: {}}, diskCheckError},
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detach: detachCall{diskName, nodeName, nil},
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test: func(testcase *testcase) error {
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detacher := newDetacher(testcase)
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return detacher.Detach(diskName, nodeName)
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},
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},
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// Detach fails
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{
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name: "Detach_Negative",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName: {}}, diskCheckError},
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detach: detachCall{diskName, nodeName, detachError},
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test: func(testcase *testcase) error {
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detacher := newDetacher(testcase)
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return detacher.Detach(diskName, nodeName)
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},
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expectedReturn: detachError,
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},
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}
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for _, testcase := range tests {
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testcase.t = t
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err := testcase.test(&testcase)
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if err != testcase.expectedReturn {
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t.Errorf("%s failed: expected err=%v, got %v", testcase.name, testcase.expectedReturn, err)
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}
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}
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}
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func TestVerifyVolumesAttached(t *testing.T) {
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readOnly := false
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nodeName1 := types.NodeName("instance1")
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nodeName2 := types.NodeName("instance2")
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diskAName := "diskA"
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diskBName := "diskB"
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diskCName := "diskC"
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diskASpec := createVolSpec(diskAName, readOnly)
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diskBSpec := createVolSpec(diskBName, readOnly)
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diskCSpec := createVolSpec(diskCName, readOnly)
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verifyDiskAttachedInResult := func(results map[*volume.Spec]bool, spec *volume.Spec, expected bool) error {
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found, ok := results[spec]
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if !ok {
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return fmt.Errorf("expected to find volume %s in verifcation result, but didn't", spec.Name())
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}
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if found != expected {
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return fmt.Errorf("expected to find volume %s to be have attached value %v but got %v", spec.Name(), expected, found)
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}
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return nil
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}
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tests := []testcase{
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// Successful VolumesAreAttached
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{
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name: "VolumesAreAttached_Positive",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName1: {diskAName, diskBName}}, nil},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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results, err := attacher.VolumesAreAttached([]*volume.Spec{diskASpec, diskBSpec}, nodeName1)
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if err != nil {
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return err
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}
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err = verifyDiskAttachedInResult(results, diskASpec, true)
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if err != nil {
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return err
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}
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return verifyDiskAttachedInResult(results, diskBSpec, true)
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},
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},
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// Successful VolumesAreAttached for detached disk
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{
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name: "VolumesAreAttached_Negative",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName1: {diskAName}}, nil},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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results, err := attacher.VolumesAreAttached([]*volume.Spec{diskASpec, diskBSpec}, nodeName1)
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if err != nil {
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return err
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}
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err = verifyDiskAttachedInResult(results, diskASpec, true)
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if err != nil {
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return err
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}
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return verifyDiskAttachedInResult(results, diskBSpec, false)
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},
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},
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// VolumesAreAttached with InstanceNotFound
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{
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name: "VolumesAreAttached_InstanceNotFound",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{}, nil},
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expectedReturn: cloudprovider.InstanceNotFound,
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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_, err := attacher.VolumesAreAttached([]*volume.Spec{diskASpec}, nodeName1)
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if err != cloudprovider.InstanceNotFound {
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return fmt.Errorf("expected InstanceNotFound error, but got %v", err)
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}
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return err
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},
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},
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// Successful BulkDisksAreAttached
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{
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name: "BulkDisksAreAttached_Positive",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName1: {diskAName}, nodeName2: {diskBName, diskCName}}, nil},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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results, err := attacher.BulkVerifyVolumes(map[types.NodeName][]*volume.Spec{nodeName1: {diskASpec}, nodeName2: {diskBSpec, diskCSpec}})
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if err != nil {
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return err
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}
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disksAttachedNode1, nodeFound := results[nodeName1]
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if !nodeFound {
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return fmt.Errorf("expected to find node %s but didn't", nodeName1)
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}
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if err := verifyDiskAttachedInResult(disksAttachedNode1, diskASpec, true); err != nil {
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return err
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}
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disksAttachedNode2, nodeFound := results[nodeName2]
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if !nodeFound {
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return fmt.Errorf("expected to find node %s but didn't", nodeName2)
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}
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if err := verifyDiskAttachedInResult(disksAttachedNode2, diskBSpec, true); err != nil {
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return err
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}
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return verifyDiskAttachedInResult(disksAttachedNode2, diskCSpec, true)
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},
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},
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// Successful BulkDisksAreAttached for detached disk
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{
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name: "BulkDisksAreAttached_Negative",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName1: {}, nodeName2: {diskBName}}, nil},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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results, err := attacher.BulkVerifyVolumes(map[types.NodeName][]*volume.Spec{nodeName1: {diskASpec}, nodeName2: {diskBSpec, diskCSpec}})
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if err != nil {
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return err
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}
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disksAttachedNode1, nodeFound := results[nodeName1]
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if !nodeFound {
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return fmt.Errorf("expected to find node %s but didn't", nodeName1)
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}
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if err := verifyDiskAttachedInResult(disksAttachedNode1, diskASpec, false); err != nil {
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return err
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}
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disksAttachedNode2, nodeFound := results[nodeName2]
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if !nodeFound {
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return fmt.Errorf("expected to find node %s but didn't", nodeName2)
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}
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if err := verifyDiskAttachedInResult(disksAttachedNode2, diskBSpec, true); err != nil {
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return err
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}
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return verifyDiskAttachedInResult(disksAttachedNode2, diskCSpec, false)
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},
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},
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// Successful BulkDisksAreAttached with InstanceNotFound
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{
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name: "BulkDisksAreAttached_InstanceNotFound",
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diskIsAttached: diskIsAttachedCall{disksAttachedMap{nodeName1: {diskAName}}, nil},
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test: func(testcase *testcase) error {
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attacher := newAttacher(testcase)
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results, err := attacher.BulkVerifyVolumes(map[types.NodeName][]*volume.Spec{nodeName1: {diskASpec}, nodeName2: {diskBSpec, diskCSpec}})
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if err != nil {
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return err
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}
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disksAttachedNode1, nodeFound := results[nodeName1]
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if !nodeFound {
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return fmt.Errorf("expected to find node %s but didn't", nodeName1)
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}
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if err := verifyDiskAttachedInResult(disksAttachedNode1, diskASpec, true); err != nil {
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return err
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}
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disksAttachedNode2, nodeFound := results[nodeName2]
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if !nodeFound {
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return fmt.Errorf("expected to find node %s but didn't", nodeName2)
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}
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if err := verifyDiskAttachedInResult(disksAttachedNode2, diskBSpec, false); err != nil {
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return err
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}
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return verifyDiskAttachedInResult(disksAttachedNode2, diskCSpec, false)
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},
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},
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}
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for _, testcase := range tests {
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testcase.t = t
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err := testcase.test(&testcase)
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if err != testcase.expectedReturn {
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t.Errorf("%s failed: expected err=%v, got %v", testcase.name, testcase.expectedReturn, err)
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}
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}
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}
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// newPlugin creates a new gcePersistentDiskPlugin with fake cloud, NewAttacher
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// and NewDetacher won't work.
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func newPlugin(t *testing.T) *gcePersistentDiskPlugin {
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host := volumetest.NewFakeVolumeHost(t,
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"/tmp", /* rootDir */
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nil, /* kubeClient */
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nil, /* plugins */
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)
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plugins := ProbeVolumePlugins()
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plugin := plugins[0]
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plugin.Init(host)
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return plugin.(*gcePersistentDiskPlugin)
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}
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func newAttacher(testcase *testcase) *gcePersistentDiskAttacher {
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return &gcePersistentDiskAttacher{
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host: nil,
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gceDisks: testcase,
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}
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}
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func newDetacher(testcase *testcase) *gcePersistentDiskDetacher {
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return &gcePersistentDiskDetacher{
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gceDisks: testcase,
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}
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}
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func createVolSpec(name string, readOnly bool) *volume.Spec {
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return &volume.Spec{
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Volume: &v1.Volume{
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VolumeSource: v1.VolumeSource{
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GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
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PDName: name,
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ReadOnly: readOnly,
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},
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},
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},
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}
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}
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func createPVSpec(name string, readOnly bool, zones []string) *volume.Spec {
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spec := &volume.Spec{
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PersistentVolume: &v1.PersistentVolume{
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Spec: v1.PersistentVolumeSpec{
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PersistentVolumeSource: v1.PersistentVolumeSource{
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GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
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PDName: name,
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ReadOnly: readOnly,
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},
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},
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},
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},
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}
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if zones != nil {
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zonesLabel := strings.Join(zones, cloudvolume.LabelMultiZoneDelimiter)
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spec.PersistentVolume.ObjectMeta.Labels = map[string]string{
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v1.LabelZoneFailureDomain: zonesLabel,
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}
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}
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return spec
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}
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// Fake GCE implementation
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type attachCall struct {
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diskName string
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nodeName types.NodeName
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readOnly bool
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regional bool
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retErr error
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}
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type detachCall struct {
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devicePath string
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nodeName types.NodeName
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retErr error
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}
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type diskIsAttachedCall struct {
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attachedDisks disksAttachedMap
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retErr error
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}
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// disksAttachedMap specifies what disks in the test scenario are actually attached to each node
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type disksAttachedMap map[types.NodeName][]string
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func (testcase *testcase) AttachDisk(diskName string, nodeName types.NodeName, readOnly bool, regional bool) error {
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expected := &testcase.attach
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if expected.diskName == "" && expected.nodeName == "" {
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// testcase.attach looks uninitialized, test did not expect to call AttachDisk
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return errors.New("unexpected AttachDisk call")
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}
|
|
|
|
if expected.diskName != diskName {
|
|
return fmt.Errorf("Unexpected AttachDisk call: expected diskName %s, got %s", expected.diskName, diskName)
|
|
}
|
|
|
|
if expected.nodeName != nodeName {
|
|
return fmt.Errorf("Unexpected AttachDisk call: expected nodeName %s, got %s", expected.nodeName, nodeName)
|
|
}
|
|
|
|
if expected.readOnly != readOnly {
|
|
return fmt.Errorf("Unexpected AttachDisk call: expected readOnly %v, got %v", expected.readOnly, readOnly)
|
|
}
|
|
|
|
if expected.regional != regional {
|
|
return fmt.Errorf("Unexpected AttachDisk call: expected regional %v, got %v", expected.regional, regional)
|
|
}
|
|
|
|
klog.V(4).Infof("AttachDisk call: %s, %s, %v, returning %v", diskName, nodeName, readOnly, expected.retErr)
|
|
|
|
return expected.retErr
|
|
}
|
|
|
|
func (testcase *testcase) DetachDisk(devicePath string, nodeName types.NodeName) error {
|
|
expected := &testcase.detach
|
|
|
|
if expected.devicePath == "" && expected.nodeName == "" {
|
|
// testcase.detach looks uninitialized, test did not expect to call DetachDisk
|
|
return errors.New("unexpected DetachDisk call")
|
|
}
|
|
|
|
if expected.devicePath != devicePath {
|
|
return fmt.Errorf("Unexpected DetachDisk call: expected devicePath %s, got %s", expected.devicePath, devicePath)
|
|
}
|
|
|
|
if expected.nodeName != nodeName {
|
|
return fmt.Errorf("Unexpected DetachDisk call: expected nodeName %s, got %s", expected.nodeName, nodeName)
|
|
}
|
|
|
|
klog.V(4).Infof("DetachDisk call: %s, %s, returning %v", devicePath, nodeName, expected.retErr)
|
|
|
|
return expected.retErr
|
|
}
|
|
|
|
func (testcase *testcase) DiskIsAttached(diskName string, nodeName types.NodeName) (bool, error) {
|
|
expected := &testcase.diskIsAttached
|
|
|
|
if expected.attachedDisks == nil {
|
|
// testcase.attachedDisks looks uninitialized, test did not expect to call DiskIsAttached
|
|
return false, errors.New("unexpected DiskIsAttached call")
|
|
}
|
|
|
|
if expected.retErr != nil {
|
|
return false, expected.retErr
|
|
}
|
|
|
|
disksForNode, nodeExists := expected.attachedDisks[nodeName]
|
|
if !nodeExists {
|
|
return false, cloudprovider.InstanceNotFound
|
|
}
|
|
|
|
found := false
|
|
for _, diskAttachedName := range disksForNode {
|
|
if diskAttachedName == diskName {
|
|
found = true
|
|
}
|
|
}
|
|
klog.V(4).Infof("DiskIsAttached call: %s, %s, returning %v", diskName, nodeName, found)
|
|
return found, nil
|
|
}
|
|
|
|
func (testcase *testcase) DisksAreAttached(diskNames []string, nodeName types.NodeName) (map[string]bool, error) {
|
|
verifiedDisks := make(map[string]bool)
|
|
for _, name := range diskNames {
|
|
found, err := testcase.DiskIsAttached(name, nodeName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
verifiedDisks[name] = found
|
|
}
|
|
return verifiedDisks, nil
|
|
}
|
|
|
|
func (testcase *testcase) BulkDisksAreAttached(diskByNodes map[types.NodeName][]string) (map[types.NodeName]map[string]bool, error) {
|
|
verifiedDisksByNodes := make(map[types.NodeName]map[string]bool)
|
|
for nodeName, disksForNode := range diskByNodes {
|
|
verifiedDisks, err := testcase.DisksAreAttached(disksForNode, nodeName)
|
|
if err != nil {
|
|
if err != cloudprovider.InstanceNotFound {
|
|
return nil, err
|
|
}
|
|
verifiedDisks = make(map[string]bool)
|
|
for _, diskName := range disksForNode {
|
|
verifiedDisks[diskName] = false
|
|
}
|
|
}
|
|
verifiedDisksByNodes[nodeName] = verifiedDisks
|
|
}
|
|
|
|
return verifiedDisksByNodes, nil
|
|
}
|
|
|
|
func (testcase *testcase) CreateDisk(name string, diskType string, zone string, sizeGb int64, tags map[string]string) (*gce.Disk, error) {
|
|
return nil, errors.New("Not implemented")
|
|
}
|
|
|
|
func (testcase *testcase) CreateRegionalDisk(name string, diskType string, replicaZones sets.String, sizeGb int64, tags map[string]string) (*gce.Disk, error) {
|
|
return nil, errors.New("Not implemented")
|
|
}
|
|
|
|
func (testcase *testcase) DeleteDisk(diskToDelete string) error {
|
|
return errors.New("Not implemented")
|
|
}
|
|
|
|
func (testcase *testcase) GetAutoLabelsForPD(*gce.Disk) (map[string]string, error) {
|
|
return map[string]string{}, errors.New("Not implemented")
|
|
}
|
|
|
|
func (testcase *testcase) ResizeDisk(
|
|
diskName string,
|
|
oldSize resource.Quantity,
|
|
newSize resource.Quantity) (resource.Quantity, error) {
|
|
return oldSize, errors.New("Not implemented")
|
|
}
|