func (this *Controller) executeRead(context context.Context, partition *PartitionController, request *api.ReadRequest, stream api.Edgy_ReadServer) (*api.OffsetData, error) {
reply, err := partition.HandleReadRequest(request)
if err != nil {
return nil, err
}
if len(reply.Messages) == 0 {
// We are at the end of the stream
return nil, io.EOF
}
if err := stream.Send(reply); err != nil {
return nil, err
}
return reply.Offset, nil
}