func TestWatchWebsocket(t *testing.T) {
simpleStorage := &SimpleRESTStorage{}
_ = rest.Watcher(simpleStorage) // Give compile error if this doesn't work.
handler := handle(map[string]rest.Storage{"simples": simpleStorage})
server := httptest.NewServer(handler)
defer server.Close()
dest, _ := url.Parse(server.URL)
dest.Scheme = "ws" // Required by websocket, though the server never sees it.
dest.Path = "/" + prefix + "/" + testGroupVersion.Group + "/" + testGroupVersion.Version + "/watch/simples"
dest.RawQuery = ""
ws, err := websocket.Dial(dest.String(), "", "http://localhost")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
try := func(action watch.EventType, object runtime.Object) {
// Send
simpleStorage.fakeWatch.Action(action, object)
// Test receive
var got watchJSON
err := websocket.JSON.Receive(ws, &got)
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if got.Type != action {
t.Errorf("Unexpected type: %v", got.Type)
}
gotObj, err := runtime.Decode(codec, got.Object)
if err != nil {
t.Fatalf("Decode error: %v\n%v", err, got)
}
if _, err := api.GetReference(gotObj); err != nil {
t.Errorf("Unable to construct reference: %v", err)
}
if e, a := object, gotObj; !reflect.DeepEqual(e, a) {
t.Errorf("Expected %#v, got %#v", e, a)
}
}
for _, item := range watchTestTable {
try(item.t, item.obj)
}
simpleStorage.fakeWatch.Stop()
var got watchJSON
err = websocket.JSON.Receive(ws, &got)
if err == nil {
t.Errorf("Unexpected non-error")
}
}
func TestWatchRead(t *testing.T) {
simpleStorage := &SimpleRESTStorage{}
_ = rest.Watcher(simpleStorage) // Give compile error if this doesn't work.
handler := handle(map[string]rest.Storage{"simples": simpleStorage})
server := httptest.NewServer(handler)
defer server.Close()
dest, _ := url.Parse(server.URL)
dest.Path = "/" + prefix + "/" + testGroupVersion.Group + "/" + testGroupVersion.Version + "/simples"
dest.RawQuery = "watch=1"
connectHTTP := func(accept string) (io.ReadCloser, string) {
client := http.Client{}
request, err := http.NewRequest("GET", dest.String(), nil)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
request.Header.Add("Accept", accept)
response, err := client.Do(request)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if response.StatusCode != http.StatusOK {
b, _ := ioutil.ReadAll(response.Body)
t.Fatalf("Unexpected response for accept: %q: %#v\n%s", accept, response, string(b))
}
return response.Body, response.Header.Get("Content-Type")
}
connectWebSocket := func(accept string) (io.ReadCloser, string) {
dest := *dest
dest.Scheme = "ws" // Required by websocket, though the server never sees it.
config, err := websocket.NewConfig(dest.String(), "http://localhost")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
config.Header.Add("Accept", accept)
ws, err := websocket.DialConfig(config)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
return ws, "__default__"
}
testCases := []struct {
Accept string
ExpectedContentType string
MediaType string
}{
{
Accept: "application/json",
ExpectedContentType: "application/json",
MediaType: "application/json",
},
{
Accept: "application/json;stream=watch",
ExpectedContentType: "application/json", // legacy behavior
MediaType: "application/json",
},
// TODO: yaml stream serialization requires that RawExtension.MarshalJSON
// be able to understand nested encoding (since yaml calls json.Marshal
// rather than yaml.Marshal, which results in the raw bytes being in yaml).
// Same problem as thirdparty object.
/*{
Accept: "application/yaml",
ExpectedContentType: "application/yaml;stream=watch",
MediaType: "application/yaml",
},*/
{
Accept: "application/vnd.kubernetes.protobuf",
ExpectedContentType: "application/vnd.kubernetes.protobuf;stream=watch",
MediaType: "application/vnd.kubernetes.protobuf",
},
{
Accept: "application/vnd.kubernetes.protobuf;stream=watch",
ExpectedContentType: "application/vnd.kubernetes.protobuf;stream=watch",
MediaType: "application/vnd.kubernetes.protobuf",
},
}
protocols := []struct {
name string
selfFraming bool
fn func(string) (io.ReadCloser, string)
}{
{name: "http", fn: connectHTTP},
{name: "websocket", selfFraming: true, fn: connectWebSocket},
}
for _, protocol := range protocols {
for _, test := range testCases {
info, ok := runtime.SerializerInfoForMediaType(api.Codecs.SupportedMediaTypes(), test.MediaType)
if !ok || info.StreamSerializer == nil {
t.Fatal(info)
}
streamSerializer := info.StreamSerializer
r, contentType := protocol.fn(test.Accept)
defer r.Close()
if contentType != "__default__" && contentType != test.ExpectedContentType {
t.Errorf("Unexpected content type: %#v", contentType)
}
objectCodec := api.Codecs.DecoderToVersion(info.Serializer, testInternalGroupVersion)
var fr io.ReadCloser = r
if !protocol.selfFraming {
fr = streamSerializer.Framer.NewFrameReader(r)
}
d := streaming.NewDecoder(fr, streamSerializer.Serializer)
var w *watch.FakeWatcher
for w == nil {
w = simpleStorage.Watcher()
time.Sleep(time.Millisecond)
}
for i, item := range podWatchTestTable {
action, object := item.t, item.obj
name := fmt.Sprintf("%s-%s-%d", protocol.name, test.MediaType, i)
// Send
w.Action(action, object)
// Test receive
var got metav1.WatchEvent
_, _, err := d.Decode(nil, &got)
if err != nil {
t.Fatalf("%s: Unexpected error: %v", name, err)
}
if got.Type != string(action) {
t.Errorf("%s: Unexpected type: %v", name, got.Type)
}
gotObj, err := runtime.Decode(objectCodec, got.Object.Raw)
if err != nil {
t.Fatalf("%s: Decode error: %v", name, err)
}
if _, err := api.GetReference(gotObj); err != nil {
t.Errorf("%s: Unable to construct reference: %v", name, err)
}
if e, a := object, gotObj; !api.Semantic.DeepEqual(e, a) {
t.Errorf("%s: different: %s", name, diff.ObjectDiff(e, a))
}
}
w.Stop()
var got metav1.WatchEvent
_, _, err := d.Decode(nil, &got)
if err == nil {
t.Errorf("Unexpected non-error")
}
r.Close()
}
}
}
func TestWatchWebsocketClientClose(t *testing.T) {
simpleStorage := &SimpleRESTStorage{}
_ = rest.Watcher(simpleStorage) // Give compile error if this doesn't work.
handler := handle(map[string]rest.Storage{"simples": simpleStorage})
server := httptest.NewServer(handler)
defer server.Close()
dest, _ := url.Parse(server.URL)
dest.Scheme = "ws" // Required by websocket, though the server never sees it.
dest.Path = "/" + prefix + "/" + testGroupVersion.Group + "/" + testGroupVersion.Version + "/watch/simples"
dest.RawQuery = ""
ws, err := websocket.Dial(dest.String(), "", "http://localhost")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
try := func(action watch.EventType, object runtime.Object) {
// Send
simpleStorage.fakeWatch.Action(action, object)
// Test receive
var got watchJSON
err := websocket.JSON.Receive(ws, &got)
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
if got.Type != action {
t.Errorf("Unexpected type: %v", got.Type)
}
gotObj, err := runtime.Decode(codec, got.Object)
if err != nil {
t.Fatalf("Decode error: %v\n%v", err, got)
}
if _, err := api.GetReference(gotObj); err != nil {
t.Errorf("Unable to construct reference: %v", err)
}
if e, a := object, gotObj; !reflect.DeepEqual(e, a) {
t.Errorf("Expected %#v, got %#v", e, a)
}
}
// Send/receive should work
for _, item := range watchTestTable {
try(item.t, item.obj)
}
// Sending normal data should be ignored
websocket.JSON.Send(ws, map[string]interface{}{"test": "data"})
// Send/receive should still work
for _, item := range watchTestTable {
try(item.t, item.obj)
}
// Client requests a close
ws.Close()
select {
case data, ok := <-simpleStorage.fakeWatch.ResultChan():
if ok {
t.Errorf("expected a closed result channel, but got watch result %#v", data)
}
case <-time.After(5 * time.Second):
t.Errorf("watcher did not close when client closed")
}
var got watchJSON
err = websocket.JSON.Receive(ws, &got)
if err == nil {
t.Errorf("Unexpected non-error")
}
}