def save_last_sync(self, ids, process):
        try:
            spec = {'_id': 'last_sync'}
            document = {'$set': {process: ids}}
            self.db.internal.update(spec, document, upsert=True)
        except Exception as e:
            raise DatabaseException(e)
def orchestrator(self):
        """
        :returns: Orchestrator instance.
        :rtype: Orchestrator
        """
        return self.__orchestrator