Golang tools.NewFakeEtcdClient函数代码示例

func TestGuaranteedUpdateNoChange(t *testing.T) {
	fakeClient := tools.NewFakeEtcdClient(t)
	fakeClient.TestIndex = true
	helper := newEtcdHelper(fakeClient, codec, etcdtest.PathPrefix())
	key := etcdtest.AddPrefix("/some/key")

	// Create a new node.
	fakeClient.ExpectNotFoundGet(key)
	obj := &TestResource{ObjectMeta: api.ObjectMeta{Name: "foo"}, Value: 1}
	err := helper.GuaranteedUpdate("/some/key", &TestResource{}, true, storage.SimpleUpdate(func(in runtime.Object) (runtime.Object, error) {
		return obj, nil
	}))
	if err != nil {
		t.Errorf("Unexpected error %#v", err)
	}

	// Update an existing node with the same data
	callbackCalled := false
	objUpdate := &TestResource{ObjectMeta: api.ObjectMeta{Name: "foo"}, Value: 1}
	err = helper.GuaranteedUpdate("/some/key", &TestResource{}, true, storage.SimpleUpdate(func(in runtime.Object) (runtime.Object, error) {
		fakeClient.Err = errors.New("should not be called")
		callbackCalled = true
		return objUpdate, nil
	}))
	if err != nil {
		t.Fatalf("Unexpected error %#v", err)
	}
	if !callbackCalled {
		t.Errorf("tryUpdate callback should have been called.")
	}
}

func NewTestEventEtcdRegistry(t *testing.T) (*tools.FakeEtcdClient, generic.Registry) {
	f := tools.NewFakeEtcdClient(t)
	f.TestIndex = true

	h := tools.NewEtcdHelper(f, testapi.Codec(), etcdtest.PathPrefix())
	return f, NewEtcdRegistry(h, testTTL)
}

func TestEtcdListEverythingRoutes(t *testing.T) {
	fakeClient := tools.NewFakeEtcdClient(t)
	key := makeTestDefaultRouteListKey()
	fakeClient.Data[key] = tools.EtcdResponseWithError{
		R: &etcd.Response{
			Node: &etcd.Node{
				Nodes: []*etcd.Node{
					{
						Value: runtime.EncodeOrDie(latest.Codec, &api.Route{ObjectMeta: kapi.ObjectMeta{Name: "foo"}}),
					},
					{
						Value: runtime.EncodeOrDie(latest.Codec, &api.Route{ObjectMeta: kapi.ObjectMeta{Name: "bar"}}),
					},
				},
			},
		},
		E: nil,
	}
	registry := NewTestEtcd(fakeClient)
	routes, err := registry.ListRoutes(kapi.NewDefaultContext(), labels.Everything())
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}

	if len(routes.Items) != 2 || routes.Items[0].Name != "foo" || routes.Items[1].Name != "bar" {
		t.Errorf("Unexpected routes list: %#v", routes)
	}
}

func TestWatchEtcdError(t *testing.T) {
	codec := latest.Codec
	fakeClient := tools.NewFakeEtcdClient(t)
	fakeClient.ExpectNotFoundGet("/some/key")
	fakeClient.WatchImmediateError = fmt.Errorf("immediate error")
	h := newEtcdHelper(fakeClient, codec, etcdtest.PathPrefix())

	watching, err := h.Watch("/some/key", 4, storage.Everything)
	if err != nil {
		t.Fatalf("Unexpected error: %v", err)
	}
	defer watching.Stop()

	got := <-watching.ResultChan()
	if got.Type != watch.Error {
		t.Fatalf("Unexpected non-error")
	}
	status, ok := got.Object.(*api.Status)
	if !ok {
		t.Fatalf("Unexpected non-error object type")
	}
	if status.Message != "immediate error" {
		t.Errorf("Unexpected wrong error")
	}
	if status.Status != api.StatusFailure {
		t.Errorf("Unexpected wrong error status")
	}
}

func TestWatchPurposefulShutdown(t *testing.T) {
	fakeClient := tools.NewFakeEtcdClient(t)

	h := newEtcdHelper(fakeClient, codec, etcdtest.PathPrefix())
	key := "/some/key"
	prefixedKey := etcdtest.AddPrefix(key)
	fakeClient.ExpectNotFoundGet(prefixedKey)

	// Test purposeful shutdown
	watching, err := h.Watch(key, 0, storage.Everything)
	if err != nil {
		t.Fatalf("Unexpected error: %v", err)
	}

	fakeClient.WaitForWatchCompletion()
	watching.Stop()

	// Did everything shut down?
	if _, open := <-fakeClient.WatchResponse; open {
		t.Errorf("A stop did not cause a graceful shutdown")
	}
	if _, open := <-watching.ResultChan(); open {
		t.Errorf("An injected error did not cause a graceful shutdown")
	}
}

func TestEtcdListControllers(t *testing.T) {
	fakeClient := tools.NewFakeEtcdClient(t)
	registry := NewTestEtcdRegistry(fakeClient)
	ctx := api.NewDefaultContext()
	key := makeControllerListKey(ctx)
	key = etcdtest.AddPrefix(key)
	fakeClient.Data[key] = tools.EtcdResponseWithError{
		R: &etcd.Response{
			Node: &etcd.Node{
				Nodes: []*etcd.Node{
					{
						Value: runtime.EncodeOrDie(latest.Codec, &api.ReplicationController{ObjectMeta: api.ObjectMeta{Name: "foo"}}),
					},
					{
						Value: runtime.EncodeOrDie(latest.Codec, &api.ReplicationController{ObjectMeta: api.ObjectMeta{Name: "bar"}}),
					},
				},
			},
		},
		E: nil,
	}
	controllers, err := registry.ListControllers(ctx)
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}

	if len(controllers.Items) != 2 || controllers.Items[0].Name != "foo" || controllers.Items[1].Name != "bar" {
		t.Errorf("Unexpected controller list: %#v", controllers)
	}
}

func TestEtcdListImagesFiltered(t *testing.T) {
	fakeClient := tools.NewFakeEtcdClient(t)
	key := "/images"
	fakeClient.Data[key] = tools.EtcdResponseWithError{
		R: &etcd.Response{
			Node: &etcd.Node{
				Nodes: []*etcd.Node{
					{
						Value: runtime.EncodeOrDie(api.Image{
							JSONBase: kubeapi.JSONBase{ID: "foo"},
							Labels:   map[string]string{"env": "prod"},
						}),
					},
					{
						Value: runtime.EncodeOrDie(api.Image{
							JSONBase: kubeapi.JSONBase{ID: "bar"},
							Labels:   map[string]string{"env": "dev"},
						}),
					},
				},
			},
		},
		E: nil,
	}
	registry := NewTestEtcdRegistry(fakeClient)
	images, err := registry.ListImages(labels.SelectorFromSet(labels.Set{"env": "dev"}))
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}

	if len(images.Items) != 1 || images.Items[0].ID != "bar" {
		t.Errorf("Unexpected images list: %#v", images)
	}
}

func TestEtcdCreateController(t *testing.T) {
	fakeClient := tools.NewFakeEtcdClient(t)
	registry := NewTestEtcdRegistry(fakeClient)
	err := registry.CreateController(&api.ReplicationController{
		JSONBase: api.JSONBase{
			ID: "foo",
		},
	})
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}

	resp, err := fakeClient.Get("/registry/controllers/foo", false, false)
	if err != nil {
		t.Fatalf("Unexpected error %v", err)
	}
	var ctrl api.ReplicationController
	err = latest.Codec.DecodeInto([]byte(resp.Node.Value), &ctrl)
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}

	if ctrl.ID != "foo" {
		t.Errorf("Unexpected pod: %#v %s", ctrl, resp.Node.Value)
	}
}

func TestEtcdCreateService(t *testing.T) {
	fakeClient := tools.NewFakeEtcdClient(t)
	registry := NewTestEtcdRegistry(fakeClient)
	err := registry.CreateService(&api.Service{
		JSONBase: api.JSONBase{ID: "foo"},
	})
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}

	resp, err := fakeClient.Get("/registry/services/specs/foo", false, false)
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}

	var service api.Service
	err = latest.Codec.DecodeInto([]byte(resp.Node.Value), &service)
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}

	if service.ID != "foo" {
		t.Errorf("Unexpected service: %#v %s", service, resp.Node.Value)
	}
}

func TestEtcdDeletePod(t *testing.T) {
	fakeClient := tools.NewFakeEtcdClient(t)
	fakeClient.TestIndex = true

	key := "/registry/pods/foo"
	fakeClient.Set(key, runtime.EncodeOrDie(latest.Codec, &api.Pod{
		JSONBase:     api.JSONBase{ID: "foo"},
		DesiredState: api.PodState{Host: "machine"},
	}), 0)
	fakeClient.Set("/registry/hosts/machine/kubelet", runtime.EncodeOrDie(latest.Codec, &api.ContainerManifestList{
		Items: []api.ContainerManifest{
			{ID: "foo"},
		},
	}), 0)
	registry := NewTestEtcdRegistry(fakeClient)
	err := registry.DeletePod("foo")
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}

	if len(fakeClient.DeletedKeys) != 1 {
		t.Errorf("Expected 1 delete, found %#v", fakeClient.DeletedKeys)
	} else if fakeClient.DeletedKeys[0] != key {
		t.Errorf("Unexpected key: %s, expected %s", fakeClient.DeletedKeys[0], key)
	}
	response, err := fakeClient.Get("/registry/hosts/machine/kubelet", false, false)
	if err != nil {
		t.Fatalf("Unexpected error %v", err)
	}
	var manifests api.ContainerManifestList
	latest.Codec.DecodeInto([]byte(response.Node.Value), &manifests)
	if len(manifests.Items) != 0 {
		t.Errorf("Unexpected container set: %s, expected empty", response.Node.Value)
	}
}

func TestEtcdListControllers(t *testing.T) {
	fakeClient := tools.NewFakeEtcdClient(t)
	key := "/registry/controllers"
	fakeClient.Data[key] = tools.EtcdResponseWithError{
		R: &etcd.Response{
			Node: &etcd.Node{
				Nodes: []*etcd.Node{
					{
						Value: runtime.EncodeOrDie(latest.Codec, &api.ReplicationController{JSONBase: api.JSONBase{ID: "foo"}}),
					},
					{
						Value: runtime.EncodeOrDie(latest.Codec, &api.ReplicationController{JSONBase: api.JSONBase{ID: "bar"}}),
					},
				},
			},
		},
		E: nil,
	}
	registry := NewTestEtcdRegistry(fakeClient)
	controllers, err := registry.ListControllers()
	if err != nil {
		t.Errorf("unexpected error: %v", err)
	}

	if len(controllers.Items) != 2 || controllers.Items[0].ID != "foo" || controllers.Items[1].ID != "bar" {
		t.Errorf("Unexpected controller list: %#v", controllers)
	}
}

func TestGetServersToValidate(t *testing.T) {
	master := Master{}
	config := Config{}
	fakeClient := tools.NewFakeEtcdClient(t)
	fakeClient.Machines = []string{"http://machine1:4001", "http://machine2", "http://machine3:4003"}
	config.EtcdHelper = tools.NewEtcdHelper(fakeClient, latest.Codec, etcdtest.PathPrefix())
	config.EtcdHelper.Versioner = nil

	master.nodeRegistry = registrytest.NewMinionRegistry([]string{"node1", "node2"}, api.NodeResources{})

	servers := master.getServersToValidate(&config, true)

	if len(servers) != 7 {
		t.Errorf("unexpected server list: %#v", servers)
	}
	for _, server := range []string{"scheduler", "controller-manager", "etcd-0", "etcd-1", "etcd-2", "node-0", "node-1"} {
		if _, ok := servers[server]; !ok {
			t.Errorf("server list missing: %s", server)
		}
	}

	servers = master.getServersToValidate(&config, false)

	if len(servers) != 5 {
		t.Errorf("unexpected server list: %#v", servers)
	}
	for _, server := range []string{"scheduler", "controller-manager", "etcd-0", "etcd-1", "etcd-2"} {
		if _, ok := servers[server]; !ok {
			t.Errorf("server list missing: %s", server)
		}
	}
}

// newStorage creates a REST storage backed by etcd helpers
func newStorage(t *testing.T) (*REST, *tools.FakeEtcdClient) {
	fakeEtcdClient := tools.NewFakeEtcdClient(t)
	fakeEtcdClient.TestIndex = true
	h := tools.NewEtcdHelper(fakeEtcdClient, latest.Codec)
	storage := NewREST(h)
	return storage, fakeEtcdClient
}

func TestGuaranteedUpdateKeyNotFound(t *testing.T) {
	fakeClient := tools.NewFakeEtcdClient(t)
	fakeClient.TestIndex = true
	helper := newEtcdHelper(fakeClient, codec, etcdtest.PathPrefix())
	key := etcdtest.AddPrefix("/some/key")

	// Create a new node.
	fakeClient.ExpectNotFoundGet(key)
	obj := &TestResource{ObjectMeta: api.ObjectMeta{Name: "foo"}, Value: 1}

	f := storage.SimpleUpdate(func(in runtime.Object) (runtime.Object, error) {
		return obj, nil
	})

	ignoreNotFound := false
	err := helper.GuaranteedUpdate("/some/key", &TestResource{}, ignoreNotFound, f)
	if err == nil {
		t.Errorf("Expected error for key not found.")
	}

	ignoreNotFound = true
	err = helper.GuaranteedUpdate("/some/key", &TestResource{}, ignoreNotFound, f)
	if err != nil {
		t.Errorf("Unexpected error %v.", err)
	}
}

func TestEtcdWatchServices(t *testing.T) {
	ctx := api.NewDefaultContext()
	fakeClient := tools.NewFakeEtcdClient(t)
	registry := NewTestEtcdRegistry(fakeClient)
	watching, err := registry.WatchServices(ctx,
		labels.Everything(),
		fields.SelectorFromSet(fields.Set{"name": "foo"}),
		"1",
	)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	fakeClient.WaitForWatchCompletion()

	select {
	case _, ok := <-watching.ResultChan():
		if !ok {
			t.Errorf("watching channel should be open")
		}
	default:
	}
	fakeClient.WatchInjectError <- nil
	if _, ok := <-watching.ResultChan(); ok {
		t.Errorf("watching channel should be closed")
	}
	watching.Stop()
}