Exemplo n.º 1
0
func (wd *WatcherDispatcher) register(watcher *watch.FakeWatcher) {
	wd.Lock()
	defer wd.Unlock()
	wd.watchers = append(wd.watchers, watcher)
	for _, event := range wd.eventsSoFar {
		watcher.Action(event.Type, event.Object)
	}
}
Exemplo n.º 2
0
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 {
			t.Fatalf("Unexpected response %#v", response)
		}
		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",
		},
		// 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 {
			serializer, ok := api.Codecs.StreamingSerializerForMediaType(test.MediaType, nil)
			if !ok {
				t.Fatal(serializer)
			}

			r, contentType := protocol.fn(test.Accept)
			defer r.Close()

			if contentType != "__default__" && contentType != test.ExpectedContentType {
				t.Errorf("Unexpected content type: %#v", contentType)
			}
			objectSerializer, ok := api.Codecs.SerializerForMediaType(test.MediaType, nil)
			if !ok {
				t.Fatal(objectSerializer)
			}
			objectCodec := api.Codecs.DecoderToVersion(objectSerializer, testInternalGroupVersion)

			var fr io.ReadCloser = r
			if !protocol.selfFraming {
				fr = serializer.Framer.NewFrameReader(r)
			}
			d := streaming.NewDecoder(fr, 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 versioned.Event
				_, _, 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 versioned.Event
			_, _, err := d.Decode(nil, &got)
			if err == nil {
				t.Errorf("Unexpected non-error")
			}

			r.Close()
		}
	}
}