1588970ec4
If a client says they want the name to be generated, a 409 is not appropriate (since they didn't specify a name). Instead, we should return the next most appropriate error, which is a 5xx error indicating the request failed but the client *should* try again. Since there is no 5xx error that exactly fits this purpose, use 500 with StatusReasonTryAgainLater set. This commit does not implement client retry on TryAgainLater, but clients should retry up to a certain number of times.
664 lines
17 KiB
Go
664 lines
17 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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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 pod
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import (
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"fmt"
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"reflect"
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"strings"
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"testing"
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"time"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/errors"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/latest"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/rest/resttest"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/apiserver"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/client"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/registry/registrytest"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
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)
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type fakeCache struct {
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requestedNamespace string
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requestedName string
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clearedNamespace string
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clearedName string
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statusToReturn *api.PodStatus
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errorToReturn error
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}
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func (f *fakeCache) GetPodStatus(namespace, name string) (*api.PodStatus, error) {
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f.requestedNamespace = namespace
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f.requestedName = name
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return f.statusToReturn, f.errorToReturn
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}
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func (f *fakeCache) ClearPodStatus(namespace, name string) {
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f.clearedNamespace = namespace
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f.clearedName = name
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}
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func expectApiStatusError(t *testing.T, ch <-chan apiserver.RESTResult, msg string) {
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out := <-ch
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status, ok := out.Object.(*api.Status)
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if !ok {
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t.Errorf("Expected an api.Status object, was %#v", out)
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return
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}
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if msg != status.Message {
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t.Errorf("Expected %#v, was %s", msg, status.Message)
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}
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}
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func expectPod(t *testing.T, ch <-chan apiserver.RESTResult) (*api.Pod, bool) {
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out := <-ch
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pod, ok := out.Object.(*api.Pod)
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if !ok || pod == nil {
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t.Errorf("Expected an api.Pod object, was %#v", out)
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return nil, false
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}
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return pod, true
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}
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func TestCreatePodRegistryError(t *testing.T) {
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podRegistry := registrytest.NewPodRegistry(nil)
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podRegistry.Err = fmt.Errorf("test error")
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storage := REST{
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registry: podRegistry,
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podCache: &fakeCache{statusToReturn: &api.PodStatus{}},
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}
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pod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: "foo",
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},
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}
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ctx := api.NewDefaultContext()
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ch, err := storage.Create(ctx, pod)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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expectApiStatusError(t, ch, podRegistry.Err.Error())
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}
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func TestCreatePodSetsIds(t *testing.T) {
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podRegistry := registrytest.NewPodRegistry(nil)
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podRegistry.Err = fmt.Errorf("test error")
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storage := REST{
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registry: podRegistry,
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podCache: &fakeCache{statusToReturn: &api.PodStatus{}},
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}
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pod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: "foo",
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},
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}
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ctx := api.NewDefaultContext()
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ch, err := storage.Create(ctx, pod)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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expectApiStatusError(t, ch, podRegistry.Err.Error())
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if len(podRegistry.Pod.Name) == 0 {
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t.Errorf("Expected pod ID to be set, Got %#v", pod)
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}
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if pod.Name != podRegistry.Pod.Name {
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t.Errorf("Expected manifest ID to be equal to pod ID, Got %#v", pod)
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}
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}
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func TestCreatePodSetsUID(t *testing.T) {
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podRegistry := registrytest.NewPodRegistry(nil)
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podRegistry.Err = fmt.Errorf("test error")
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storage := REST{
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registry: podRegistry,
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podCache: &fakeCache{statusToReturn: &api.PodStatus{}},
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}
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pod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: "foo",
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},
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}
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ctx := api.NewDefaultContext()
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ch, err := storage.Create(ctx, pod)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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expectApiStatusError(t, ch, podRegistry.Err.Error())
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if len(podRegistry.Pod.UID) == 0 {
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t.Errorf("Expected pod UID to be set, Got %#v", pod)
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}
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}
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func TestListPodsError(t *testing.T) {
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podRegistry := registrytest.NewPodRegistry(nil)
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podRegistry.Err = fmt.Errorf("test error")
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storage := REST{
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registry: podRegistry,
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podCache: &fakeCache{statusToReturn: &api.PodStatus{}},
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}
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ctx := api.NewContext()
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pods, err := storage.List(ctx, labels.Everything(), labels.Everything())
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if err != podRegistry.Err {
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t.Errorf("Expected %#v, Got %#v", podRegistry.Err, err)
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}
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if pods.(*api.PodList) != nil {
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t.Errorf("Unexpected non-nil pod list: %#v", pods)
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}
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}
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func TestListPodsCacheError(t *testing.T) {
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podRegistry := registrytest.NewPodRegistry(nil)
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podRegistry.Pods = &api.PodList{
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Items: []api.Pod{
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{
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ObjectMeta: api.ObjectMeta{
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Name: "foo",
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},
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},
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},
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}
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storage := REST{
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registry: podRegistry,
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podCache: &fakeCache{errorToReturn: client.ErrPodInfoNotAvailable},
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}
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ctx := api.NewContext()
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pods, err := storage.List(ctx, labels.Everything(), labels.Everything())
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if err != nil {
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t.Fatalf("Expected no error, got %#v", err)
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}
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pl := pods.(*api.PodList)
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if len(pl.Items) != 1 {
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t.Fatalf("Unexpected 0-len pod list: %+v", pl)
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}
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if e, a := api.PodUnknown, pl.Items[0].Status.Phase; e != a {
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t.Errorf("Expected %v, got %v", e, a)
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}
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}
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func TestListEmptyPodList(t *testing.T) {
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podRegistry := registrytest.NewPodRegistry(&api.PodList{ListMeta: api.ListMeta{ResourceVersion: "1"}})
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storage := REST{
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registry: podRegistry,
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podCache: &fakeCache{statusToReturn: &api.PodStatus{}},
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}
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ctx := api.NewContext()
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pods, err := storage.List(ctx, labels.Everything(), labels.Everything())
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if len(pods.(*api.PodList).Items) != 0 {
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t.Errorf("Unexpected non-zero pod list: %#v", pods)
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}
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if pods.(*api.PodList).ResourceVersion != "1" {
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t.Errorf("Unexpected resource version: %#v", pods)
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}
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}
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func TestListPodList(t *testing.T) {
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podRegistry := registrytest.NewPodRegistry(nil)
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podRegistry.Pods = &api.PodList{
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Items: []api.Pod{
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{
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ObjectMeta: api.ObjectMeta{
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Name: "foo",
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},
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},
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{
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ObjectMeta: api.ObjectMeta{
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Name: "bar",
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},
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},
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},
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}
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storage := REST{
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registry: podRegistry,
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podCache: &fakeCache{statusToReturn: &api.PodStatus{Phase: api.PodRunning}},
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}
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ctx := api.NewContext()
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podsObj, err := storage.List(ctx, labels.Everything(), labels.Everything())
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pods := podsObj.(*api.PodList)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if len(pods.Items) != 2 {
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t.Errorf("Unexpected pod list: %#v", pods)
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}
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if pods.Items[0].Name != "foo" || pods.Items[0].Status.Phase != api.PodRunning {
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t.Errorf("Unexpected pod: %#v", pods.Items[0])
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}
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if pods.Items[1].Name != "bar" {
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t.Errorf("Unexpected pod: %#v", pods.Items[1])
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}
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}
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func TestListPodListSelection(t *testing.T) {
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podRegistry := registrytest.NewPodRegistry(nil)
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podRegistry.Pods = &api.PodList{
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Items: []api.Pod{
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{
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ObjectMeta: api.ObjectMeta{Name: "foo"},
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}, {
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ObjectMeta: api.ObjectMeta{Name: "bar"},
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Status: api.PodStatus{Host: "barhost"},
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}, {
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ObjectMeta: api.ObjectMeta{Name: "baz"},
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Status: api.PodStatus{Phase: "bazstatus"},
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}, {
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ObjectMeta: api.ObjectMeta{
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Name: "qux",
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Labels: map[string]string{"label": "qux"},
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},
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}, {
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ObjectMeta: api.ObjectMeta{Name: "zot"},
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},
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},
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}
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storage := REST{
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registry: podRegistry,
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podCache: &fakeCache{statusToReturn: &api.PodStatus{}},
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}
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ctx := api.NewContext()
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table := []struct {
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label, field string
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expectedIDs util.StringSet
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}{
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{
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expectedIDs: util.NewStringSet("foo", "bar", "baz", "qux", "zot"),
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}, {
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field: "name=zot",
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expectedIDs: util.NewStringSet("zot"),
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}, {
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label: "label=qux",
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expectedIDs: util.NewStringSet("qux"),
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}, {
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field: "Status.Phase=bazstatus",
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expectedIDs: util.NewStringSet("baz"),
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}, {
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field: "Status.Host=barhost",
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expectedIDs: util.NewStringSet("bar"),
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}, {
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field: "Status.Host=",
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expectedIDs: util.NewStringSet("foo", "baz", "qux", "zot"),
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}, {
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field: "Status.Host!=",
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expectedIDs: util.NewStringSet("bar"),
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},
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}
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for index, item := range table {
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label, err := labels.ParseSelector(item.label)
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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continue
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}
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field, err := labels.ParseSelector(item.field)
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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continue
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}
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podsObj, err := storage.List(ctx, label, field)
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if err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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pods := podsObj.(*api.PodList)
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if e, a := len(item.expectedIDs), len(pods.Items); e != a {
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t.Errorf("%v: Expected %v, got %v", index, e, a)
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}
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for _, pod := range pods.Items {
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if !item.expectedIDs.Has(pod.Name) {
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t.Errorf("%v: Unexpected pod %v", index, pod.Name)
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}
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t.Logf("%v: Got pod Name: %v", index, pod.Name)
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}
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}
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}
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func TestPodDecode(t *testing.T) {
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podRegistry := registrytest.NewPodRegistry(nil)
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storage := REST{
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registry: podRegistry,
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podCache: &fakeCache{statusToReturn: &api.PodStatus{}},
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}
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expected := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: "foo",
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},
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}
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body, err := latest.Codec.Encode(expected)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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actual := storage.New()
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if err := latest.Codec.DecodeInto(body, actual); err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if !reflect.DeepEqual(expected, actual) {
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t.Errorf("Expected %#v, Got %#v", expected, actual)
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}
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}
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|
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func TestGetPod(t *testing.T) {
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podRegistry := registrytest.NewPodRegistry(nil)
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podRegistry.Pod = &api.Pod{
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ObjectMeta: api.ObjectMeta{Name: "foo"},
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Status: api.PodStatus{Host: "machine"},
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}
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storage := REST{
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registry: podRegistry,
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podCache: &fakeCache{statusToReturn: &api.PodStatus{Phase: api.PodRunning}},
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}
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ctx := api.NewContext()
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obj, err := storage.Get(ctx, "foo")
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pod := obj.(*api.Pod)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
|
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expect := *podRegistry.Pod
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expect.Status.Phase = api.PodRunning
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// TODO: when host is moved to spec, remove this line.
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expect.Status.Host = "machine"
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if e, a := &expect, pod; !reflect.DeepEqual(e, a) {
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t.Errorf("Unexpected pod. Expected %#v, Got %#v", e, a)
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}
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}
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func TestGetPodCacheError(t *testing.T) {
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podRegistry := registrytest.NewPodRegistry(nil)
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podRegistry.Pod = &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo"}}
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storage := REST{
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registry: podRegistry,
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podCache: &fakeCache{errorToReturn: client.ErrPodInfoNotAvailable},
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}
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ctx := api.NewContext()
|
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obj, err := storage.Get(ctx, "foo")
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pod := obj.(*api.Pod)
|
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if err != nil {
|
|
t.Fatalf("unexpected error: %v", err)
|
|
}
|
|
|
|
expect := *podRegistry.Pod
|
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expect.Status.Phase = api.PodUnknown
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if e, a := &expect, pod; !reflect.DeepEqual(e, a) {
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t.Errorf("Unexpected pod. Expected %#v, Got %#v", e, a)
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|
}
|
|
}
|
|
|
|
// TODO: remove, this is covered by RESTTest.TestCreate
|
|
func TestPodStorageValidatesCreate(t *testing.T) {
|
|
podRegistry := registrytest.NewPodRegistry(nil)
|
|
podRegistry.Err = fmt.Errorf("test error")
|
|
storage := REST{
|
|
registry: podRegistry,
|
|
podCache: &fakeCache{statusToReturn: &api.PodStatus{}},
|
|
}
|
|
ctx := api.NewDefaultContext()
|
|
pod := &api.Pod{
|
|
ObjectMeta: api.ObjectMeta{
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|
Labels: map[string]string{
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"invalid/label/to/cause/validation/failure": "bar",
|
|
},
|
|
},
|
|
}
|
|
c, err := storage.Create(ctx, pod)
|
|
if c != nil {
|
|
t.Errorf("Expected nil channel")
|
|
}
|
|
if !errors.IsInvalid(err) {
|
|
t.Errorf("Expected to get an invalid resource error, got %v", err)
|
|
}
|
|
}
|
|
|
|
// TODO: remove, this is covered by RESTTest.TestCreate
|
|
func TestCreatePod(t *testing.T) {
|
|
podRegistry := registrytest.NewPodRegistry(nil)
|
|
podRegistry.Pod = &api.Pod{
|
|
ObjectMeta: api.ObjectMeta{Name: "foo"},
|
|
Status: api.PodStatus{
|
|
Host: "machine",
|
|
},
|
|
}
|
|
storage := REST{
|
|
registry: podRegistry,
|
|
podCache: &fakeCache{statusToReturn: &api.PodStatus{}},
|
|
}
|
|
pod := &api.Pod{}
|
|
pod.Name = "foo"
|
|
ctx := api.NewDefaultContext()
|
|
channel, err := storage.Create(ctx, pod)
|
|
if err != nil {
|
|
t.Fatalf("unexpected error: %v", err)
|
|
}
|
|
select {
|
|
case <-channel:
|
|
// Do nothing, this is expected.
|
|
case <-time.After(time.Millisecond * 100):
|
|
t.Error("Unexpected timeout on async channel")
|
|
}
|
|
if !api.HasObjectMetaSystemFieldValues(&podRegistry.Pod.ObjectMeta) {
|
|
t.Errorf("Expected ObjectMeta field values were populated")
|
|
}
|
|
}
|
|
|
|
// TODO: remove, this is covered by RESTTest.TestCreate
|
|
func TestCreatePodWithConflictingNamespace(t *testing.T) {
|
|
storage := REST{}
|
|
pod := &api.Pod{
|
|
ObjectMeta: api.ObjectMeta{Name: "test", Namespace: "not-default"},
|
|
}
|
|
|
|
ctx := api.NewDefaultContext()
|
|
channel, err := storage.Create(ctx, pod)
|
|
if channel != nil {
|
|
t.Error("Expected a nil channel, but we got a value")
|
|
}
|
|
if err == nil {
|
|
t.Errorf("Expected an error, but we didn't get one")
|
|
} else if strings.Contains(err.Error(), "Controller.Namespace does not match the provided context") {
|
|
t.Errorf("Expected 'Pod.Namespace does not match the provided context' error, got '%v'", err.Error())
|
|
}
|
|
}
|
|
|
|
func TestUpdatePodWithConflictingNamespace(t *testing.T) {
|
|
storage := REST{}
|
|
pod := &api.Pod{
|
|
ObjectMeta: api.ObjectMeta{Name: "test", Namespace: "not-default"},
|
|
}
|
|
|
|
ctx := api.NewDefaultContext()
|
|
channel, err := storage.Update(ctx, pod)
|
|
if channel != nil {
|
|
t.Error("Expected a nil channel, but we got a value")
|
|
}
|
|
if err == nil {
|
|
t.Errorf("Expected an error, but we didn't get one")
|
|
} else if strings.Index(err.Error(), "Pod.Namespace does not match the provided context") == -1 {
|
|
t.Errorf("Expected 'Pod.Namespace does not match the provided context' error, got '%v'", err.Error())
|
|
}
|
|
}
|
|
|
|
func TestResourceLocation(t *testing.T) {
|
|
expectedIP := "1.2.3.4"
|
|
testCases := []struct {
|
|
pod api.Pod
|
|
query string
|
|
location string
|
|
}{
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{Name: "foo"},
|
|
},
|
|
query: "foo",
|
|
location: expectedIP,
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{Name: "foo"},
|
|
},
|
|
query: "foo:12345",
|
|
location: expectedIP + ":12345",
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{Name: "foo"},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{Name: "ctr"},
|
|
},
|
|
},
|
|
},
|
|
query: "foo",
|
|
location: expectedIP,
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{Name: "foo"},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{Name: "ctr", Ports: []api.Port{{ContainerPort: 9376}}},
|
|
},
|
|
},
|
|
},
|
|
query: "foo",
|
|
location: expectedIP + ":9376",
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{Name: "foo"},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{Name: "ctr", Ports: []api.Port{{ContainerPort: 9376}}},
|
|
},
|
|
},
|
|
},
|
|
query: "foo:12345",
|
|
location: expectedIP + ":12345",
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{Name: "foo"},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{Name: "ctr1"},
|
|
{Name: "ctr2", Ports: []api.Port{{ContainerPort: 9376}}},
|
|
},
|
|
},
|
|
},
|
|
query: "foo",
|
|
location: expectedIP + ":9376",
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{Name: "foo"},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{Name: "ctr1", Ports: []api.Port{{ContainerPort: 9376}}},
|
|
{Name: "ctr2", Ports: []api.Port{{ContainerPort: 1234}}},
|
|
},
|
|
},
|
|
},
|
|
query: "foo",
|
|
location: expectedIP + ":9376",
|
|
},
|
|
}
|
|
|
|
for _, tc := range testCases {
|
|
podRegistry := registrytest.NewPodRegistry(nil)
|
|
podRegistry.Pod = &tc.pod
|
|
storage := &REST{
|
|
registry: podRegistry,
|
|
podCache: &fakeCache{statusToReturn: &api.PodStatus{PodIP: expectedIP}},
|
|
}
|
|
|
|
redirector := apiserver.Redirector(storage)
|
|
location, err := redirector.ResourceLocation(api.NewDefaultContext(), tc.query)
|
|
if err != nil {
|
|
t.Errorf("Unexpected error: %v", err)
|
|
}
|
|
|
|
if location != tc.location {
|
|
t.Errorf("Expected %v, but got %v", tc.location, location)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestDeletePod(t *testing.T) {
|
|
podRegistry := registrytest.NewPodRegistry(nil)
|
|
podRegistry.Pod = &api.Pod{
|
|
ObjectMeta: api.ObjectMeta{Name: "foo"},
|
|
Status: api.PodStatus{Host: "machine"},
|
|
}
|
|
fakeCache := &fakeCache{}
|
|
storage := REST{
|
|
registry: podRegistry,
|
|
podCache: fakeCache,
|
|
}
|
|
ctx := api.NewDefaultContext()
|
|
channel, err := storage.Delete(ctx, "foo")
|
|
if err != nil {
|
|
t.Fatalf("unexpected error: %v", err)
|
|
}
|
|
var result apiserver.RESTResult
|
|
select {
|
|
case result = <-channel:
|
|
// Do nothing, this is expected.
|
|
case <-time.After(time.Millisecond * 100):
|
|
t.Error("Unexpected timeout on async channel")
|
|
}
|
|
if fakeCache.clearedNamespace != "default" || fakeCache.clearedName != "foo" {
|
|
t.Errorf("Unexpeceted cache delete: %s %s %#v", fakeCache.clearedName, fakeCache.clearedNamespace, result.Object)
|
|
}
|
|
}
|
|
|
|
func TestCreate(t *testing.T) {
|
|
registry := registrytest.NewPodRegistry(nil)
|
|
test := resttest.New(t, &REST{
|
|
registry: registry,
|
|
podCache: &fakeCache{statusToReturn: &api.PodStatus{}},
|
|
}, registry.SetError)
|
|
test.TestCreate(
|
|
// valid
|
|
&api.Pod{
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: "test1",
|
|
Image: "foo",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
// invalid
|
|
&api.Pod{
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{},
|
|
},
|
|
},
|
|
)
|
|
}
|