手写一个django middleware

import time
import logging

logger = logging.getLogger(__name__)


def performance_logger_middleware(get_response):
    def middleware(request):
        # 计算响应耗时
        start_time = time.time()
        response = get_response(request)
        duration = time.time() - start_time
        # 在response header中写入页面访问耗时的属性
        response["X-Page-Duration-ms"] = int(duration * 1000)
        # 载入日志
        logger.info("%s %s %s", duration, request.path, request.GET.dict() )
        return response

    return middleware