bddef32193
In order to support graceful deletion, the resource object will need access to the TTL value in etcd. Also, in the future we may want to get the creation index (distinct from modifiedindex) and expose it to clients. Change EtcdResourceVersioner to be more type specific (objects vs lists) and provide a default implementation that relies on the internal API convention. Also, rename etcd_tools.go to etcd_helper.go and split a few things up.
143 lines
4.0 KiB
Go
143 lines
4.0 KiB
Go
// +build integration,!no-etcd
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/*
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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 integration
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import (
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"strconv"
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"testing"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/latest"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/v1beta1"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/tools"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/watch"
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)
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func init() {
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requireEtcd()
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}
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type stringCodec struct{}
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type fakeAPIObject string
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func (*fakeAPIObject) IsAnAPIObject() {}
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func (c stringCodec) Encode(obj runtime.Object) ([]byte, error) {
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return []byte(*obj.(*fakeAPIObject)), nil
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}
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func (c stringCodec) Decode(data []byte) (runtime.Object, error) {
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o := fakeAPIObject(data)
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return &o, nil
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}
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func (c stringCodec) DecodeInto(data []byte, obj runtime.Object) error {
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o := obj.(*fakeAPIObject)
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*o = fakeAPIObject(data)
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return nil
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}
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func TestSetObj(t *testing.T) {
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client := newEtcdClient()
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helper := tools.EtcdHelper{Client: client, Codec: stringCodec{}}
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withEtcdKey(func(key string) {
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fakeObject := fakeAPIObject("object")
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if err := helper.SetObj(key, &fakeObject, nil, 0); err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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resp, err := client.Get(key, false, false)
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if err != nil || resp.Node == nil {
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t.Fatalf("unexpected error: %v %v", err, resp)
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}
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if resp.Node.Value != "object" {
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t.Errorf("unexpected response: %#v", resp.Node)
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}
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})
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}
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func TestExtractObj(t *testing.T) {
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client := newEtcdClient()
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helper := tools.EtcdHelper{Client: client, Codec: stringCodec{}}
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withEtcdKey(func(key string) {
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_, err := client.Set(key, "object", 0)
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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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s := fakeAPIObject("")
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if err := helper.ExtractObj(key, &s, false); err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if s != "object" {
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t.Errorf("unexpected response: %#v", s)
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}
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})
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}
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func TestWatch(t *testing.T) {
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client := newEtcdClient()
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helper := tools.NewEtcdHelper(client, latest.Codec)
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withEtcdKey(func(key string) {
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resp, err := client.Set(key, runtime.EncodeOrDie(v1beta1.Codec, &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo"}}), 0)
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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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expectedVersion := resp.Node.ModifiedIndex
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// watch should load the object at the current index
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w := helper.Watch(key, 0)
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event := <-w.ResultChan()
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if event.Type != watch.Added || event.Object == nil {
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t.Fatalf("expected first value to be set to ADDED, got %#v", event)
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}
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// version should match what we set
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pod := event.Object.(*api.Pod)
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if pod.ResourceVersion != strconv.FormatUint(expectedVersion, 10) {
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t.Errorf("expected version %d, got %#v", expectedVersion, pod)
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}
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// should be no events in the stream
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select {
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case event, ok := <-w.ResultChan():
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if !ok {
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t.Fatalf("channel closed unexpectedly")
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}
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t.Fatalf("unexpected object in channel: %#v", event)
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default:
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}
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// should return the previously deleted item in the watch, but with the latest index
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resp, err = client.Delete(key, false)
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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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expectedVersion = resp.Node.ModifiedIndex
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event = <-w.ResultChan()
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if event.Type != watch.Deleted {
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t.Errorf("expected deleted event %#v", event)
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}
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pod = event.Object.(*api.Pod)
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if pod.ResourceVersion != strconv.FormatUint(expectedVersion, 10) {
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t.Errorf("expected version %d, got %#v", expectedVersion, pod)
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}
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})
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}
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