python 正则分析nginx日志

有个需求要分析nginx日志，也懒得去研究logstach之类的开源工具，干脆直接写一个脚本，自己根据需求来实现：
先看日志格式：我们跟别人的不太一样，所以没办法了：

12.195.166.35 [10/May/2015:14:38:09 +0800] "list.xxxx.com" "GET /new/10:00/9.html?cat=0,0&sort=price_asc HTTP/1.0" 200 42164 "http://list.zhonghuasuan.com/new/10:00/8.html?cat=0,0&sort=price_asc" "Mozilla/5.0 (Linux; U; Android 4.4.2; zh-CN; H60-L02 Build/HDH60-L02) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 UCBrowser/10.4.0.558 U3/0.8.0 Mobile Safari/534.30"

上面是我的日志格式：
脚本如下：

#!/usr/bin/env python
#-*- coding:utf-8 –*-
#Author:xiaoluo
#QQ:942729042
#date:2015:05:12
import re
import sys
log = sys.argv[1]
ip = r"?P<ip>[\d.]*"
date = r"?P<date>\d+"
month = r"?P<month>\w+"
year = r"?P<year>\d+"
log_time = r"?P<time>\S+"
timezone = r"""?P<timezone>
[^\"]*
"""
name = r"""?P<name>\"
[^\"]*\"
"""
method = r"?P<method>\S+"
request = r"?P<request>\S+"
protocol = r"?P<protocol>\S+"
status = r"?P<status>\d+"
bodyBytesSent = r"?P<bodyBytesSent>\d+"
refer = r"""?P<refer>\"
[^\"]*\"
"""
userAgent=r"""?P<userAgent>
.*
"""
#f = open('access1.log','r')
#for logline in f.readlines():
p = re.compile(r"(%s)\ \[(%s)/(%s)/(%s)\:(%s)\ (%s)\ (%s)\ (%s)\ (%s)\ (%s)\ (%s)\ (%s)\ (%s)\ (%s)" %(ip, date, month, year, log_time,timezone,name,method,request,protocol,status,bodyBytesSent,refer,userAgent), re.VERBOSE)
def getcode():
codedic={}
f = open(log,'r')
for logline in f.readlines():
matchs = p.match(logline)
if matchs !=None:
allGroups =matchs.groups()
status= allGroups[10]
codedic[status]=codedic.get(status,0) +1
return codedic
f.close()
def getIP():
f = open(log,'r')
IPdic={}
for logline in f.readlines():
matchs = p.match(logline)
if matchs !=None:
allGroups =matchs.groups()
IP=allGroups[0]
IPdic[IP] = IPdic.get(IP,0) +1
IPdic=sorted(IPdic.iteritems(),key=lambda c:c[1],reverse=True)
IPdic=IPdic[0:21:1]
return IPdic
f.close()
def getURL():
f = open(log,'r')
URLdic={}
for logline in f.readlines():
matchs = p.match(logline)
if matchs !=None:
allGroups =matchs.groups()
urlname = allGroups[6]
URLdic[urlname] = URLdic.get(urlname,0) +1
URLdic=sorted(URLdic.iteritems(),key=lambda c:c[1],reverse=True)
URLdic=URLdic[0:21:1]
return URLdic
def getpv():
f = open(log,'r')
pvdic={}
for logline in f.readlines():
matchs = p.match(logline)
if matchs !=None:
allGroups =matchs.groups()
timezone=allGroups[4]
time = timezone.split(':')
minute = time[0]+":"+time[1]
pvdic[minute]=pvdic.get(minute,0) +1
pvdic=sorted(pvdic.iteritems(),key=lambda c:c[1],reverse=True)
pvdic=pvdic[0:21:1]
return pvdic
if __name__=='__main__':
print "网站监控状况检查状态码"
print getcode()
print "网站访问量最高的20个IP地址"
print getIP()
print "网站访问最多的20个站点名"
print getURL()
print getpv()

这里要指出的是。我当初是给正则匹配的时候单独封装一个函数的，这样就省去了下面每个函数要打开之前都要单独打开一遍文件，但是我return的时候只能用列表的形式返回，结果列表太大把我的内存耗光了，我的是32G的内存，15G的日志。
效果：



最后一个函数是统计每分钟，访问的数量
本文出自 “小罗” 博客，请务必保留此出处http://xiaoluoge.blog.51cto.com/9141967/1651021