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Merge pull request #75755 from smarterclayton/save_one_allocate

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Avoid allocating the watch shim object more than once
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Kubernetes Prow Robot 2019-03-27 02:14:48 -07:00 committed by GitHub
commit 6c22cff317
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1 changed files with 3 additions and 1 deletions
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4
staging/src/k8s.io/apiserver/pkg/endpoints/handlers/watch.go
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@ -216,6 +216,7 @@ func (s *WatchServer) ServeHTTP(w http.ResponseWriter, req *http.Request) {
var unknown runtime.Unknown
internalEvent := &metav1.InternalEvent{}
outEvent := &metav1.WatchEvent{}
buf := &bytes.Buffer{}
ch := s.Watching.ResultChan()
for {
@ -242,10 +243,11 @@ func (s *WatchServer) ServeHTTP(w http.ResponseWriter, req *http.Request) {
unknown.Raw = buf.Bytes()
event.Object = &unknown
*outEvent = metav1.WatchEvent{}
// create the external type directly and encode it. Clients will only recognize the serialization we provide.
// The internal event is being reused, not reallocated so its just a few extra assignments to do it this way
// and we get the benefit of using conversion functions which already have to stay in sync
outEvent := &metav1.WatchEvent{}
*internalEvent = metav1.InternalEvent(event)
err := metav1.Convert_v1_InternalEvent_To_v1_WatchEvent(internalEvent, outEvent, nil)
if err != nil {