bufPool.Put(payload)
	}
}

// Sends a single whole record.
func (writer *messageWriter) SendRecord(payload *bytes.Buffer) error {
	select {
	case writer.payloadCh <- payload:
		return nil
	case <-writer.doneCh:
		return fmt.Errorf("messageWriter is done")
	}
}

func (writer *messageWriter) flushRecords() bool {
	if writer.payloadBufferIndex == 0 {
		return true
	}