'Master wants to send the mapping to us.'

def HandleServerSync(self):

    if self.MASTER:
        return self._EmptyResponse(constants.RESPONSE_IS_MASTER_SERVER)
    mapping = rdf_data_server.DataServerMapping.FromSerializedString(self.post_data)
    self.DATA_SERVER.SetMapping(mapping)
    body = self.GetStatistics().SerializeToString()
    return self._Response(constants.RESPONSE_OK, body)
