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Comment: add description for some code which hard to understand

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Signed-off-by: Hu Keping <hukeping@huawei.com>
This commit is contained in:
Hu Keping 2015-09-19 17:58:43 +08:00
parent 4a6e8c8f3c
commit 3b443abec2
2 changed files with 8 additions and 1 deletions
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6
api/server/daemon.go
View file

@ -111,8 +111,12 @@ func (s *Server) getEvents(ctx context.Context, w http.ResponseWriter, r *http.R
d := s.daemon d := s.daemon
es := d.EventsService es := d.EventsService
w.Header().Set("Content-Type", "application/json") w.Header().Set("Content-Type", "application/json")
outStream := ioutils.NewWriteFlusher(w) outStream := ioutils.NewWriteFlusher(w)
outStream.Write(nil) // make sure response is sent immediately // Write an empty chunk of data.
// This is to ensure that the HTTP status code is sent immediately,
// so that it will not block the receiver.
outStream.Write(nil)
enc := json.NewEncoder(outStream) enc := json.NewEncoder(outStream)
getContainerID := func(cn string) string { getContainerID := func(cn string) string {

3
daemon/stats.go
View file

@ -40,6 +40,9 @@ func (daemon *Daemon) ContainerStats(prefixOrName string, config *ContainerStats
} }
if config.Stream { if config.Stream {
// Write an empty chunk of data.
// This is to ensure that the HTTP status code is sent immediately,
// even if the container has not yet produced any data.
config.OutStream.Write(nil) config.OutStream.Write(nil)
} }