Golang FakeWatcher.Stop方法代码示例

func TestReflectorListAndWatch(t *testing.T) {
	createdFakes := make(chan *watch.FakeWatcher)

	// The ListFunc says that it's at revision 1. Therefore, we expect our WatchFunc
	// to get called at the beginning of the watch with 1, and again with 3 when we
	// inject an error.
	expectedRVs := []string{"1", "3"}
	lw := &testLW{
		WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
			rv := options.ResourceVersion
			fw := watch.NewFake()
			if e, a := expectedRVs[0], rv; e != a {
				t.Errorf("Expected rv %v, but got %v", e, a)
			}
			expectedRVs = expectedRVs[1:]
			// channel is not buffered because the for loop below needs to block. But
			// we don't want to block here, so report the new fake via a go routine.
			go func() { createdFakes <- fw }()
			return fw, nil
		},
		ListFunc: func() (runtime.Object, error) {
			return &api.PodList{ListMeta: unversioned.ListMeta{ResourceVersion: "1"}}, nil
		},
	}
	s := NewFIFO(MetaNamespaceKeyFunc)
	r := NewReflector(lw, &api.Pod{}, s, 0)
	go r.ListAndWatch(wait.NeverStop)

	ids := []string{"foo", "bar", "baz", "qux", "zoo"}
	var fw *watch.FakeWatcher
	for i, id := range ids {
		if fw == nil {
			fw = <-createdFakes
		}
		sendingRV := strconv.FormatUint(uint64(i+2), 10)
		fw.Add(&api.Pod{ObjectMeta: api.ObjectMeta{Name: id, ResourceVersion: sendingRV}})
		if sendingRV == "3" {
			// Inject a failure.
			fw.Stop()
			fw = nil
		}
	}

	// Verify we received the right ids with the right resource versions.
	for i, id := range ids {
		pod := s.Pop().(*api.Pod)
		if e, a := id, pod.Name; e != a {
			t.Errorf("%v: Expected %v, got %v", i, e, a)
		}
		if e, a := strconv.FormatUint(uint64(i+2), 10), pod.ResourceVersion; e != a {
			t.Errorf("%v: Expected %v, got %v", i, e, a)
		}
	}

	if len(expectedRVs) != 0 {
		t.Error("called watchStarter an unexpected number of times")
	}
}

//.........这里部分代码省略.........
		},
		// 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()
		}
	}
}