def get_next_id(self):
        try:
            query = {'_id': 'last_id'}
            update = {'$inc': {'id': 1}}
            fn = self.db.internal.find_and_modify
            row = fn(query, update, upsert=True, new=True)
        except Exception as e:
            raise DatabaseException(e)
        return row['id']
def __add_fuzzing_range(self):
        start = self.ui.sBAddRangeStart.value()
        end = self.ui.sBAddRangeEnd.value()
        step = self.ui.sBAddRangeStep.value()
        self.fuzz_table_model.add_range(start, end + 1, step)