code: def emit(self, batch):
          
          try:
              self.client.submitBatches([batch])
              # it will call http_transport.flush() and
              # status code and message will be updated
              code = self.http_transport.code
              msg = self.http_transport.message
              if code >= 300 or code < 200:
                  logging.error("Traces cannot be uploaded;\
                          HTTP status code: {}, message {}".format(code, msg))
          except Exception as e:  # pragma: NO COVER
              logging.error(getattr(e, 'message', e))
  
          finally:
              if self.http_transport.isOpen():
                  self.http_transport.close()
docs: Submits batches to Thrift HTTP Server through Binary Protocol.
  
          :type batch:
              :class:`~opencensus.ext.jaeger.trace_exporter.gen.jaeger.Batch`
          :param batch: Object to emit Jaeger spans.