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import logging
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import time
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from ipware import get_client_ip
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from user_agents import parse
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from blog.documents import ELASTICSEARCH_ENABLED, ElaspedTimeDocumentManager
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logger = logging.getLogger(__name__)
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class OnlineMiddleware(object):
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"""xjh：在线中间件，用于记录页面加载时间和用户访问信息"""
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def __init__(self, get_response=None):
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self.get_response = get_response
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super().__init__()
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def __call__(self, request):
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''' xjh：页面渲染时间统计 '''
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start_time = time.time()
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response = self.get_response(request)
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#xjh：获取用户IP和User-Agent信息
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http_user_agent = request.META.get('HTTP_USER_AGENT', '')
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ip, _ = get_client_ip(request)
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user_agent = parse(http_user_agent)
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if not response.streaming:
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try:
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cast_time = time.time() - start_time
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if ELASTICSEARCH_ENABLED:
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#xjh：记录页面加载耗时到Elasticsearch
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time_taken = round((cast_time) * 1000, 2)
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url = request.path
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from django.utils import timezone
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ElaspedTimeDocumentManager.create(
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url=url,
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time_taken=time_taken,
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log_datetime=timezone.now(),
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useragent=user_agent,
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ip=ip)
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#xjh：在页面内容中替换加载时间占位符
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response.content = response.content.replace(
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b'<!!LOAD_TIMES!!>', str.encode(str(cast_time)[:5]))
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except Exception as e:
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logger.error("Error OnlineMiddleware: %s" % e)
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return response |
