今天優化程式碼的時候想到用裝飾器精簡函式執行的計時程式碼,想要把裝飾器加到類檢視中,在成哥的指導下,完成了

from functools import wraps

def count_time_cost(func):
    @wraps(func)
    def wrapper(*args, **kwargs):
        start = datetime.datetime.now()
        r = func(*args, **kwargs)
        end = datetime.datetime.now()
        LOG.info("Django view function run finished! Task_message : {} Cost_time : {}"
 
.format(r.data.get("msg"),
                                                                                              (end - start)))
        return r
    return wrapper

class VolumeQueryNew(APIView):
    @method_decorator(count_time_cost)
    def get(self, request, *args, **kwargs):
        zone_id = request.query_params.get("zoneid"
 
)
        volume_uuid = request.query_params.get("volume_uuid") or request.query_params.get("volume_id")
        rc = get_rc_by_udc(request)
        add_mark = "1"
        volume_filtered_info = []
        try:
            msg = 'Get all volume info successfully!'
            LOG.info("volumes info is{}"
 
.format(str(volume_filtered_info)))
            pagination_class = APIViewPagePagination
            return common_page_response(volume_filtered_info, request, msg, pagination_class)
        except Exception as e:
            LOG.exception("failed to get volumes!error exception msg{}".format(e))
            return common_error_response("failed to get volumes!error msg",
                                         FAILED_TO_GET_ALL_VOLUMES)

參考:
https://docs.djangoproject.com/en/1.8/topics/class-based-views/intro/#decorating-the-class

http://www.jb51.net/article/61454.htm