func watchBody(codec runtime.Codec, events []watch.Event) io.ReadCloser {
buf := bytes.NewBuffer([]byte{})
enc := json.NewEncoder(buf, codec)
for i := range events {
enc.Encode(&events[i])
}
return ioutil.NopCloser(buf)
}
func watchBody(events ...watch.Event) string {
buf := &bytes.Buffer{}
enc := watchjson.NewEncoder(buf, testapi.Default.Codec())
for _, e := range events {
enc.Encode(&e)
}
return buf.String()
}
func TestWatch(t *testing.T) {
var table = []struct {
t watch.EventType
obj runtime.Object
}{
{watch.Added, &api.Pod{ObjectMeta: api.ObjectMeta{Name: "first"}}},
{watch.Modified, &api.Pod{ObjectMeta: api.ObjectMeta{Name: "second"}}},
{watch.Deleted, &api.Pod{ObjectMeta: api.ObjectMeta{Name: "last"}}},
}
testServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
flusher, ok := w.(http.Flusher)
if !ok {
panic("need flusher!")
}
w.Header().Set("Transfer-Encoding", "chunked")
w.WriteHeader(http.StatusOK)
flusher.Flush()
encoder := watchjson.NewEncoder(w, testapi.Default.Codec())
for _, item := range table {
if err := encoder.Encode(&watch.Event{Type: item.t, Object: item.obj}); err != nil {
panic(err)
}
flusher.Flush()
}
}))
// TODO: Uncomment when fix #19254
// defer testServer.Close()
s := testRESTClient(t, testServer)
watching, err := s.Get().Prefix("path/to/watch/thing").Watch()
if err != nil {
t.Fatalf("Unexpected error")
}
for _, item := range table {
got, ok := <-watching.ResultChan()
if !ok {
t.Fatalf("Unexpected early close")
}
if e, a := item.t, got.Type; e != a {
t.Errorf("Expected %v, got %v", e, a)
}
if e, a := item.obj, got.Object; !api.Semantic.DeepDerivative(e, a) {
t.Errorf("Expected %v, got %v", e, a)
}
}
_, ok := <-watching.ResultChan()
if ok {
t.Fatal("Unexpected non-close")
}
}
// ServeHTTP serves a series of JSON encoded events via straight HTTP with
// Transfer-Encoding: chunked.
func (self *WatchServer) ServeHTTP(w http.ResponseWriter, req *http.Request) {
loggedW := httplog.LogOf(req, w)
w = httplog.Unlogged(w)
timeoutCh, cleanup := self.t.TimeoutCh()
defer cleanup()
defer self.watching.Stop()
cn, ok := w.(http.CloseNotifier)
if !ok {
loggedW.Addf("unable to get CloseNotifier: %#v", w)
http.NotFound(w, req)
return
}
flusher, ok := w.(http.Flusher)
if !ok {
loggedW.Addf("unable to get Flusher: %#v", w)
http.NotFound(w, req)
return
}
w.Header().Set("Transfer-Encoding", "chunked")
w.WriteHeader(http.StatusOK)
flusher.Flush()
// TODO: use arbitrary serialization on watch
encoder := watchjson.NewEncoder(w, self.encoder)
for {
select {
case <-cn.CloseNotify():
return
case <-timeoutCh:
return
case event, ok := <-self.watching.ResultChan():
if !ok {
// End of results.
return
}
self.fixup(event.Object)
if err := encoder.Encode(&event); err != nil {
// Client disconnect.
return
}
flusher.Flush()
}
}
}
func TestWatch(t *testing.T) {
var table = []struct {
t watch.EventType
obj runtime.Object
}{
{watch.Added, &api.Pod{ObjectMeta: api.ObjectMeta{Name: "first"}}},
{watch.Modified, &api.Pod{ObjectMeta: api.ObjectMeta{Name: "second"}}},
{watch.Deleted, &api.Pod{ObjectMeta: api.ObjectMeta{Name: "last"}}},
}
auth := &Config{Username: "******", Password: "******"}
testServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
checkAuth(t, auth, r)
flusher, ok := w.(http.Flusher)
if !ok {
panic("need flusher!")
}
w.Header().Set("Transfer-Encoding", "chunked")
w.WriteHeader(http.StatusOK)
flusher.Flush()
encoder := watchjson.NewEncoder(w, latest.Codec)
for _, item := range table {
if err := encoder.Encode(&watch.Event{item.t, item.obj}); err != nil {
panic(err)
}
flusher.Flush()
}
}))
s, err := New(&Config{
Host: testServer.URL,
Version: testapi.Version(),
Username: "******",
Password: "******",
})
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
watching, err := s.Get().Prefix("path/to/watch/thing").Watch()
if err != nil {
t.Fatalf("Unexpected error")
}
for _, item := range table {
got, ok := <-watching.ResultChan()
if !ok {
t.Fatalf("Unexpected early close")
}
if e, a := item.t, got.Type; e != a {
t.Errorf("Expected %v, got %v", e, a)
}
if e, a := item.obj, got.Object; !api.Semantic.DeepDerivative(e, a) {
t.Errorf("Expected %v, got %v", e, a)
}
}
_, ok := <-watching.ResultChan()
if ok {
t.Fatal("Unexpected non-close")
}
}
func TestWatch(t *testing.T) {
tcs := []struct {
name string
namespace string
events []watch.Event
path string
}{
{
name: "normal_watch",
path: "/api/gtest/vtest/watch/rtest",
events: []watch.Event{
{Type: watch.Added, Object: getObject("vTest", "rTest", "normal_watch")},
{Type: watch.Modified, Object: getObject("vTest", "rTest", "normal_watch")},
{Type: watch.Deleted, Object: getObject("vTest", "rTest", "normal_watch")},
},
},
{
name: "namespaced_watch",
namespace: "nstest",
path: "/api/gtest/vtest/watch/namespaces/nstest/rtest",
events: []watch.Event{
{Type: watch.Added, Object: getObject("vTest", "rTest", "namespaced_watch")},
{Type: watch.Modified, Object: getObject("vTest", "rTest", "namespaced_watch")},
{Type: watch.Deleted, Object: getObject("vTest", "rTest", "namespaced_watch")},
},
},
}
for _, tc := range tcs {
gv := &unversioned.GroupVersion{Group: "gtest", Version: "vtest"}
resource := &unversioned.APIResource{Name: "rtest", Namespaced: len(tc.namespace) != 0}
cl, srv, err := getClientServer(gv, func(w http.ResponseWriter, r *http.Request) {
if r.Method != "GET" {
t.Errorf("Watch(%q) got HTTP method %s. wanted GET", tc.name, r.Method)
}
if r.URL.Path != tc.path {
t.Errorf("Watch(%q) got path %s. wanted %s", tc.name, r.URL.Path, tc.path)
}
enc := watchjson.NewEncoder(w, dynamicCodec{})
for _, e := range tc.events {
enc.Encode(&e)
}
})
if err != nil {
t.Errorf("unexpected error when creating client: %v", err)
continue
}
defer srv.Close()
watcher, err := cl.Resource(resource, tc.namespace).Watch(v1.ListOptions{})
if err != nil {
t.Errorf("unexpected error when watching %q: %v", tc.name, err)
continue
}
for _, want := range tc.events {
got := <-watcher.ResultChan()
if !reflect.DeepEqual(got, want) {
t.Errorf("Watch(%q) want: %v\ngot: %v", tc.name, want, got)
}
}
}
}