func TestStartingResourceVersion(t *testing.T) {
server, etcdStorage := newEtcdTestStorage(t, testapi.Default.Codec(), etcdtest.PathPrefix())
defer server.Terminate(t)
cacher := newTestCacher(etcdStorage)
defer cacher.Stop()
// add 1 object
podFoo := makeTestPod("foo")
fooCreated := updatePod(t, etcdStorage, podFoo, nil)
// Set up Watch starting at fooCreated.ResourceVersion + 10
rv, err := storage.ParseWatchResourceVersion(fooCreated.ResourceVersion)
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
rv += 10
startVersion := strconv.Itoa(int(rv))
watcher, err := cacher.Watch(context.TODO(), "pods/ns/foo", startVersion, storage.Everything)
if err != nil {
t.Fatalf("Unexpected error: %v", err)
}
defer watcher.Stop()
lastFoo := fooCreated
for i := 0; i < 11; i++ {
podFooForUpdate := makeTestPod("foo")
podFooForUpdate.Labels = map[string]string{"foo": strconv.Itoa(i)}
lastFoo = updatePod(t, etcdStorage, podFooForUpdate, lastFoo)
}
select {
case e := <-watcher.ResultChan():
pod := e.Object.(*api.Pod)
podRV, err := storage.ParseWatchResourceVersion(pod.ResourceVersion)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
// event should have at least rv + 1, since we're starting the watch at rv
if podRV <= rv {
t.Errorf("expected event with resourceVersion of at least %d, got %d", rv+1, podRV)
}
case <-time.After(wait.ForeverTestTimeout):
t.Errorf("timed out waiting for event")
}
}
func (s *store) watch(ctx context.Context, key string, rv string, filter storage.FilterFunc, recursive bool) (watch.Interface, error) {
rev, err := storage.ParseWatchResourceVersion(rv)
if err != nil {
return nil, err
}
key = keyWithPrefix(s.pathPrefix, key)
return s.watcher.Watch(ctx, key, int64(rev), recursive, filter)
}