mirror of https://github.com/k3s-io/k3s
210 lines
6.5 KiB
Go
210 lines
6.5 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors 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 etcd3
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import (
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"errors"
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"reflect"
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"testing"
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"time"
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"github.com/coreos/etcd/integration"
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"golang.org/x/net/context"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/testapi"
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"k8s.io/kubernetes/pkg/api/unversioned"
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"k8s.io/kubernetes/pkg/runtime"
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"k8s.io/kubernetes/pkg/storage"
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"k8s.io/kubernetes/pkg/util/wait"
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"k8s.io/kubernetes/pkg/watch"
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)
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func TestWatch(t *testing.T) {
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testWatch(t, false)
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}
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func TestWatchList(t *testing.T) {
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testWatch(t, true)
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}
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// It tests that
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// - first occurrence of objects should notify Add event
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// -
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func testWatch(t *testing.T, recursive bool) {
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ctx, store, cluster := testSetup(t)
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defer cluster.Terminate(t)
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podFoo := &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo"}}
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podBar := &api.Pod{ObjectMeta: api.ObjectMeta{Name: "bar"}}
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tests := []struct {
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key string
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filter storage.FilterFunc
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watchTests []*testWatchStruct
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}{{ // create a key
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key: "/somekey-1",
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watchTests: []*testWatchStruct{{podFoo, true, watch.Added}},
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filter: storage.Everything,
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}, { // create a key but obj gets filtered
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key: "/somekey-2",
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watchTests: []*testWatchStruct{{podFoo, false, ""}},
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filter: func(runtime.Object) bool { return false },
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}, { // create a key but obj gets filtered. Then update it with unfiltered obj
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key: "/somekey-3",
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watchTests: []*testWatchStruct{{podFoo, false, ""}, {podBar, true, watch.Added}},
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filter: func(obj runtime.Object) bool {
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pod := obj.(*api.Pod)
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return pod.Name == "bar"
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},
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}, { // update
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key: "/somekey-4",
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watchTests: []*testWatchStruct{{podFoo, true, watch.Added}, {podBar, true, watch.Modified}},
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filter: storage.Everything,
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}, { // delete because of being filtered
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key: "/somekey-5",
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watchTests: []*testWatchStruct{{podFoo, true, watch.Added}, {podBar, true, watch.Deleted}},
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filter: func(obj runtime.Object) bool {
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pod := obj.(*api.Pod)
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return pod.Name != "bar"
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},
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}}
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for i, tt := range tests {
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w, err := store.watch(ctx, tt.key, "0", tt.filter, recursive)
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if err != nil {
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t.Fatalf("Watch failed: %v", err)
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}
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for _, watchTest := range tt.watchTests {
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out := &api.Pod{}
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key := tt.key
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if recursive {
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key = key + "/item"
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}
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err := store.GuaranteedUpdate(ctx, key, out, true, nil, storage.SimpleUpdate(
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func(runtime.Object) (runtime.Object, error) {
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return watchTest.obj, nil
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}))
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if err != nil {
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t.Fatalf("GuaranteedUpdate failed: %v", err)
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}
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if watchTest.expectEvent {
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testCheckResult(t, i, watchTest.watchType, w, nil)
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}
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}
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w.Stop()
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testCheckStop(t, i, w)
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}
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}
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func TestDeleteTriggerWatch(t *testing.T) {
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ctx, store, cluster := testSetup(t)
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defer cluster.Terminate(t)
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key, storedObj := testPropogateStore(t, store, ctx, &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo"}})
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w, err := store.Watch(ctx, key, storedObj.ResourceVersion, storage.Everything)
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if err != nil {
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t.Fatalf("Watch failed: %v", err)
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}
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if err := store.Delete(ctx, key, &api.Pod{}, nil); err != nil {
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t.Fatalf("Delete failed: %v", err)
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}
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testCheckResult(t, 0, watch.Deleted, w, storedObj)
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}
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// TestWatchSync tests that
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// - watch from 0 should sync up and grab the object added before
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// - watch from non-0 should just watch changes after given version
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func TestWatchFromZeroAndNoneZero(t *testing.T) {
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ctx, store, cluster := testSetup(t)
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defer cluster.Terminate(t)
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key, storedObj := testPropogateStore(t, store, ctx, &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo"}})
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w, err := store.Watch(ctx, key, "0", storage.Everything)
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if err != nil {
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t.Fatalf("Watch failed: %v", err)
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}
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testCheckResult(t, 0, watch.Added, w, storedObj)
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w.Stop()
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testCheckStop(t, 0, w)
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w, err = store.Watch(ctx, key, storedObj.ResourceVersion, storage.Everything)
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if err != nil {
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t.Fatalf("Watch failed: %v", err)
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}
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out := &api.Pod{}
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store.GuaranteedUpdate(ctx, key, out, true, nil, storage.SimpleUpdate(
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func(runtime.Object) (runtime.Object, error) {
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return &api.Pod{ObjectMeta: api.ObjectMeta{Name: "bar"}}, err
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}))
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testCheckResult(t, 0, watch.Modified, w, out)
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}
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func TestWatchError(t *testing.T) {
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cluster := integration.NewClusterV3(t, &integration.ClusterConfig{Size: 1})
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defer cluster.Terminate(t)
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invalidStore := newStore(cluster.RandClient(), &testCodec{testapi.Default.Codec()}, "")
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ctx := context.Background()
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w, err := invalidStore.Watch(ctx, "/abc", "0", storage.Everything)
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if err != nil {
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t.Fatalf("Watch failed: %v", err)
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}
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validStore := newStore(cluster.RandClient(), testapi.Default.Codec(), "")
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validStore.GuaranteedUpdate(ctx, "/abc", &api.Pod{}, true, nil, storage.SimpleUpdate(
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func(runtime.Object) (runtime.Object, error) {
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return &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo"}}, nil
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}))
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testCheckResult(t, 0, watch.Error, w, nil)
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}
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type testWatchStruct struct {
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obj *api.Pod
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expectEvent bool
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watchType watch.EventType
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}
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type testCodec struct {
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runtime.Codec
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}
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func (c *testCodec) Decode(data []byte, defaults *unversioned.GroupVersionKind, into runtime.Object) (runtime.Object, *unversioned.GroupVersionKind, error) {
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return nil, nil, errors.New("Expected decoding failure")
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}
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func testCheckResult(t *testing.T, i int, expectEventType watch.EventType, w watch.Interface, expectObj *api.Pod) {
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select {
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case res := <-w.ResultChan():
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if res.Type != expectEventType {
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t.Errorf("#%d: event type want=%v, get=%v", i, expectEventType, res.Type)
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return
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}
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if expectObj != nil && !reflect.DeepEqual(expectObj, res.Object) {
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t.Errorf("#%d: obj want=\n%#v\nget=\n%#v", i, expectObj, res.Object)
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}
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case <-time.After(wait.ForeverTestTimeout):
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t.Errorf("#%d: time out after waiting %v on ResultChan", i, wait.ForeverTestTimeout)
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}
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}
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func testCheckStop(t *testing.T, i int, w watch.Interface) {
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select {
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case _, ok := <-w.ResultChan():
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if ok {
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t.Errorf("#%d: ResultChan should have been closed", i)
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}
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case <-time.After(wait.ForeverTestTimeout):
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t.Errorf("#%d: time out after waiting 1s on ResultChan", i)
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}
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}
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