func makeRequest(conn net.Conn, req *types.Request) (*types.Response, error) {
var bufWriter = bufio.NewWriter(conn)
// Write desired request
err := types.WriteMessage(req, bufWriter)
if err != nil {
return nil, err
}
err = types.WriteMessage(types.ToRequestFlush(), bufWriter)
if err != nil {
return nil, err
}
err = bufWriter.Flush()
if err != nil {
return nil, err
}
// Read desired response
var res = &types.Response{}
err = types.ReadMessage(conn, res)
if err != nil {
return nil, err
}
var resFlush = &types.Response{}
err = types.ReadMessage(conn, resFlush)
if err != nil {
return nil, err
}
if _, ok := resFlush.Value.(*types.Response_Flush); !ok {
return nil, errors.New(Fmt("Expected flush response but got something else: %v", reflect.TypeOf(resFlush)))
}
return res, nil
}
func (cli *socketClient) sendRequestsRoutine(conn net.Conn) {
w := bufio.NewWriter(conn)
for {
select {
case <-cli.flushTimer.Ch:
select {
case cli.reqQueue <- NewReqRes(types.ToRequestFlush()):
default:
// Probably will fill the buffer, or retry later.
}
case <-cli.QuitService.Quit:
return
case reqres := <-cli.reqQueue:
cli.willSendReq(reqres)
err := types.WriteMessage(reqres.Request, w)
if err != nil {
cli.StopForError(fmt.Errorf("Error writing msg: %v", err))
return
}
// log.Debug("Sent request", "requestType", reflect.TypeOf(reqres.Request), "request", reqres.Request)
if _, ok := reqres.Request.Value.(*types.Request_Flush); ok {
err = w.Flush()
if err != nil {
cli.StopForError(fmt.Errorf("Error flushing writer: %v", err))
return
}
}
}
}
}
func (cli *grpcClient) FlushAsync() *ReqRes {
req := types.ToRequestFlush()
res, err := cli.client.Flush(context.Background(), req.GetFlush(), grpc.FailFast(true))
if err != nil {
cli.StopForError(err)
}
return cli.finishAsyncCall(req, &types.Response{&types.Response_Flush{res}})
}
func (cli *socketClient) FlushSync() error {
reqRes := cli.queueRequest(types.ToRequestFlush())
if err := cli.Error(); err != nil {
return types.ErrInternalError.SetLog(err.Error())
}
reqRes.Wait() // NOTE: if we don't flush the queue, its possible to get stuck here
return cli.Error()
}
func (cli *socketClient) FlushAsync() *ReqRes {
return cli.queueRequest(types.ToRequestFlush())
}
func (app *localClient) FlushAsync() *ReqRes {
// Do nothing
return newLocalReqRes(types.ToRequestFlush(), nil)
}