954996e231
- Move from the old github.com/golang/glog to k8s.io/klog - klog as explicit InitFlags() so we add them as necessary - we update the other repositories that we vendor that made a similar change from glog to klog * github.com/kubernetes/repo-infra * k8s.io/gengo/ * k8s.io/kube-openapi/ * github.com/google/cadvisor - Entirely remove all references to glog - Fix some tests by explicit InitFlags in their init() methods Change-Id: I92db545ff36fcec83afe98f550c9e630098b3135
279 lines
8.5 KiB
Go
279 lines
8.5 KiB
Go
/*
|
|
Copyright 2018 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package pvprotection
|
|
|
|
import (
|
|
"errors"
|
|
"reflect"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/davecgh/go-spew/spew"
|
|
"k8s.io/klog"
|
|
|
|
"k8s.io/api/core/v1"
|
|
apierrors "k8s.io/apimachinery/pkg/api/errors"
|
|
"k8s.io/apimachinery/pkg/api/meta"
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
|
"k8s.io/client-go/informers"
|
|
"k8s.io/client-go/kubernetes/fake"
|
|
clienttesting "k8s.io/client-go/testing"
|
|
"k8s.io/kubernetes/pkg/controller"
|
|
volumeutil "k8s.io/kubernetes/pkg/volume/util"
|
|
)
|
|
|
|
const defaultPVName = "default-pv"
|
|
|
|
type reaction struct {
|
|
verb string
|
|
resource string
|
|
reactorfn clienttesting.ReactionFunc
|
|
}
|
|
|
|
func pv() *v1.PersistentVolume {
|
|
return &v1.PersistentVolume{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: defaultPVName,
|
|
},
|
|
}
|
|
}
|
|
|
|
func boundPV() *v1.PersistentVolume {
|
|
return &v1.PersistentVolume{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: defaultPVName,
|
|
},
|
|
Status: v1.PersistentVolumeStatus{
|
|
Phase: v1.VolumeBound,
|
|
},
|
|
}
|
|
}
|
|
|
|
func withProtectionFinalizer(pv *v1.PersistentVolume) *v1.PersistentVolume {
|
|
pv.Finalizers = append(pv.Finalizers, volumeutil.PVProtectionFinalizer)
|
|
return pv
|
|
}
|
|
|
|
func generateUpdateErrorFunc(t *testing.T, failures int) clienttesting.ReactionFunc {
|
|
i := 0
|
|
return func(action clienttesting.Action) (bool, runtime.Object, error) {
|
|
i++
|
|
if i <= failures {
|
|
// Update fails
|
|
update, ok := action.(clienttesting.UpdateAction)
|
|
|
|
if !ok {
|
|
t.Fatalf("Reactor got non-update action: %+v", action)
|
|
}
|
|
acc, _ := meta.Accessor(update.GetObject())
|
|
return true, nil, apierrors.NewForbidden(update.GetResource().GroupResource(), acc.GetName(), errors.New("Mock error"))
|
|
}
|
|
// Update succeeds
|
|
return false, nil, nil
|
|
}
|
|
}
|
|
|
|
func deleted(pv *v1.PersistentVolume) *v1.PersistentVolume {
|
|
pv.DeletionTimestamp = &metav1.Time{}
|
|
return pv
|
|
}
|
|
|
|
func TestPVProtectionController(t *testing.T) {
|
|
pvVer := schema.GroupVersionResource{
|
|
Group: v1.GroupName,
|
|
Version: "v1",
|
|
Resource: "persistentvolumes",
|
|
}
|
|
tests := []struct {
|
|
name string
|
|
// Object to insert into fake kubeclient before the test starts.
|
|
initialObjects []runtime.Object
|
|
// Optional client reactors.
|
|
reactors []reaction
|
|
// PV event to simulate. This PV will be automatically added to
|
|
// initalObjects.
|
|
updatedPV *v1.PersistentVolume
|
|
// List of expected kubeclient actions that should happen during the
|
|
// test.
|
|
expectedActions []clienttesting.Action
|
|
storageObjectInUseProtectionEnabled bool
|
|
}{
|
|
// PV events
|
|
//
|
|
{
|
|
name: "StorageObjectInUseProtection Enabled, PV without finalizer -> finalizer is added",
|
|
updatedPV: pv(),
|
|
expectedActions: []clienttesting.Action{
|
|
clienttesting.NewUpdateAction(pvVer, "", withProtectionFinalizer(pv())),
|
|
},
|
|
storageObjectInUseProtectionEnabled: true,
|
|
},
|
|
{
|
|
name: "StorageObjectInUseProtection Disabled, PV without finalizer -> finalizer is added",
|
|
updatedPV: pv(),
|
|
expectedActions: []clienttesting.Action{},
|
|
storageObjectInUseProtectionEnabled: false,
|
|
},
|
|
{
|
|
name: "PVC with finalizer -> no action",
|
|
updatedPV: withProtectionFinalizer(pv()),
|
|
expectedActions: []clienttesting.Action{},
|
|
storageObjectInUseProtectionEnabled: true,
|
|
},
|
|
{
|
|
name: "saving PVC finalizer fails -> controller retries",
|
|
updatedPV: pv(),
|
|
reactors: []reaction{
|
|
{
|
|
verb: "update",
|
|
resource: "persistentvolumes",
|
|
reactorfn: generateUpdateErrorFunc(t, 2 /* update fails twice*/),
|
|
},
|
|
},
|
|
expectedActions: []clienttesting.Action{
|
|
// This fails
|
|
clienttesting.NewUpdateAction(pvVer, "", withProtectionFinalizer(pv())),
|
|
// This fails too
|
|
clienttesting.NewUpdateAction(pvVer, "", withProtectionFinalizer(pv())),
|
|
// This succeeds
|
|
clienttesting.NewUpdateAction(pvVer, "", withProtectionFinalizer(pv())),
|
|
},
|
|
storageObjectInUseProtectionEnabled: true,
|
|
},
|
|
{
|
|
name: "StorageObjectInUseProtection Enabled, deleted PV with finalizer -> finalizer is removed",
|
|
updatedPV: deleted(withProtectionFinalizer(pv())),
|
|
expectedActions: []clienttesting.Action{
|
|
clienttesting.NewUpdateAction(pvVer, "", deleted(pv())),
|
|
},
|
|
storageObjectInUseProtectionEnabled: true,
|
|
},
|
|
{
|
|
name: "StorageObjectInUseProtection Disabled, deleted PV with finalizer -> finalizer is removed",
|
|
updatedPV: deleted(withProtectionFinalizer(pv())),
|
|
expectedActions: []clienttesting.Action{
|
|
clienttesting.NewUpdateAction(pvVer, "", deleted(pv())),
|
|
},
|
|
storageObjectInUseProtectionEnabled: false,
|
|
},
|
|
{
|
|
name: "finalizer removal fails -> controller retries",
|
|
updatedPV: deleted(withProtectionFinalizer(pv())),
|
|
reactors: []reaction{
|
|
{
|
|
verb: "update",
|
|
resource: "persistentvolumes",
|
|
reactorfn: generateUpdateErrorFunc(t, 2 /* update fails twice*/),
|
|
},
|
|
},
|
|
expectedActions: []clienttesting.Action{
|
|
// Fails
|
|
clienttesting.NewUpdateAction(pvVer, "", deleted(pv())),
|
|
// Fails too
|
|
clienttesting.NewUpdateAction(pvVer, "", deleted(pv())),
|
|
// Succeeds
|
|
clienttesting.NewUpdateAction(pvVer, "", deleted(pv())),
|
|
},
|
|
storageObjectInUseProtectionEnabled: true,
|
|
},
|
|
{
|
|
name: "deleted PVC with finalizer + PV is bound -> finalizer is not removed",
|
|
updatedPV: deleted(withProtectionFinalizer(boundPV())),
|
|
expectedActions: []clienttesting.Action{},
|
|
storageObjectInUseProtectionEnabled: true,
|
|
},
|
|
}
|
|
|
|
for _, test := range tests {
|
|
// Create client with initial data
|
|
objs := test.initialObjects
|
|
if test.updatedPV != nil {
|
|
objs = append(objs, test.updatedPV)
|
|
}
|
|
|
|
client := fake.NewSimpleClientset(objs...)
|
|
|
|
// Create informers
|
|
informers := informers.NewSharedInformerFactory(client, controller.NoResyncPeriodFunc())
|
|
pvInformer := informers.Core().V1().PersistentVolumes()
|
|
|
|
// Populate the informers with initial objects so the controller can
|
|
// Get() it.
|
|
for _, obj := range objs {
|
|
switch obj.(type) {
|
|
case *v1.PersistentVolume:
|
|
pvInformer.Informer().GetStore().Add(obj)
|
|
default:
|
|
t.Fatalf("Unknown initalObject type: %+v", obj)
|
|
}
|
|
}
|
|
|
|
// Add reactor to inject test errors.
|
|
for _, reactor := range test.reactors {
|
|
client.Fake.PrependReactor(reactor.verb, reactor.resource, reactor.reactorfn)
|
|
}
|
|
|
|
// Create the controller
|
|
ctrl := NewPVProtectionController(pvInformer, client, test.storageObjectInUseProtectionEnabled)
|
|
|
|
// Start the test by simulating an event
|
|
if test.updatedPV != nil {
|
|
ctrl.pvAddedUpdated(test.updatedPV)
|
|
}
|
|
|
|
// Process the controller queue until we get expected results
|
|
timeout := time.Now().Add(10 * time.Second)
|
|
lastReportedActionCount := 0
|
|
for {
|
|
if time.Now().After(timeout) {
|
|
t.Errorf("Test %q: timed out", test.name)
|
|
break
|
|
}
|
|
if ctrl.queue.Len() > 0 {
|
|
klog.V(5).Infof("Test %q: %d events queue, processing one", test.name, ctrl.queue.Len())
|
|
ctrl.processNextWorkItem()
|
|
}
|
|
if ctrl.queue.Len() > 0 {
|
|
// There is still some work in the queue, process it now
|
|
continue
|
|
}
|
|
currentActionCount := len(client.Actions())
|
|
if currentActionCount < len(test.expectedActions) {
|
|
// Do not log evey wait, only when the action count changes.
|
|
if lastReportedActionCount < currentActionCount {
|
|
klog.V(5).Infof("Test %q: got %d actions out of %d, waiting for the rest", test.name, currentActionCount, len(test.expectedActions))
|
|
lastReportedActionCount = currentActionCount
|
|
}
|
|
// The test expected more to happen, wait for the actions.
|
|
// Most probably it's exponential backoff
|
|
time.Sleep(10 * time.Millisecond)
|
|
continue
|
|
}
|
|
break
|
|
}
|
|
actions := client.Actions()
|
|
|
|
if !reflect.DeepEqual(actions, test.expectedActions) {
|
|
t.Errorf("Test %q: action not expected\nExpected:\n%s\ngot:\n%s", test.name, spew.Sdump(test.expectedActions), spew.Sdump(actions))
|
|
}
|
|
|
|
}
|
|
|
|
}
|