Сохранение медиафайла
        :param task:
        :param media_metadata:
        :param file_suffix:
        :param callback:
        :return:

def get_data(self, datasource, callback):
        """
        Сохранение медиафайла
        :param task:
        :param media_metadata:
        :param file_suffix:
        :param callback:
        :return:
        """
        task = self.__app.worker.current_task
        media_metadata = datasource.connector_type_preset['preset_data']['media_metadata']
        result_data = task['result_data']
        tmp_file = NamedTemporaryFile(delete=False, suffix=SOURCE_FORMAT_EXTENSION.get(media_metadata['sourceFormat']))
        self.__app.log.info("Открываем файл", {"filename": tmp_file.name})
        with open(tmp_file.name, 'wb') as f:
            callback(f)

        self.__app.log.info("start media upload")

        result_data['stage_id'] = "persist_media_file"
        self.__starter.update_task_result_data(task)
        result = self.__media.upload(open(tmp_file.name), {
            "ttlInSec": 60 * 60 * 24,  # 24h
            "entityId": 2770,
            "objectId": task.get('data', {}).get("ds_id"),
            "info": {"metadata": media_metadata}
        })

        result_data['stage_id'] = "generate_media_finish"
        result_data['media_id'] = result['id']
        self.__starter.update_task_result_data(task)

        return result