mysql全日志添加时间戳以及SQL多行问题处理（更新）

需求引入

在日常运维中，DBA可能经常会查看某个Query_Id对应哪些SQL，例如追查大事务问题；也可能业务端需要查看某时间端内所有SQL。

然而mysql在输入全日志的时候没有在每行SQL前打印时间戳，对于存在多行的SQL也没有处理，故需要额外的工具解决这个问题，

为此写了这个脚本。

处理脚本

主要操作类：

1、完成换行补齐

2、时间戳添加

#!/usr/bin/env python26
#-*- coding:utf-8 -*-
import os
import sys
import re

query_key_list = ["Sleep","Quit","Init DB","Query","Field List","Create DB","Drop DB","Refresh","Shutdown","Statistics","Processlist","Connect","Kill","Debug","Ping","Time","Delayed insert","Change user","Binlog Dump","Table Dump","Connect Out","Register Slave","Prepare","Execute","Log Data","Close stmt","Reset stmt","Set option","Fetch","Daemon","Error"]

class MySQL_Log_Parse(object):
    logfile_path=""
    time_prefix=""

    query_key = ""

    def __init__(self,logfile_path,output_file):
        self.logfile_path = logfile_path
        if not output_file:
            self.logfile_parsed_path = logfile_path+"_tmp"
        else:
            self.logfile_parsed_path = output_file

        self.logfile_parsed = open(self.logfile_parsed_path,"w")
        self.query_key = '|'.join(query_key_list)

    def _sql_completed(self,sql_log):
        re_key = "(^\d{6} \d{2}:\d{2}:\d{2})?( )*\d* "+self.query_key

        pattern = re.compile(re_key)
        match = pattern.search(sql_log)

        if match:
            return True
        return False
    def _print_line(self,sql_log):
        time_parttern = re.compile(r'^\d{6} \d{2}:\d{2}:\d{2}')
        match = time_parttern.search(sql_log)

        if match:
            new_line = sql_log.strip()
            self.time_prefix = match.group()

        else:
            new_line = self.time_prefix+"   "+sql_log.strip()
        self.logfile_parsed.write(new_line+'\n')    

    def log_parse(self):
        try:
            logfile = open(self.logfile_path,"r")

            time_prefix = ""

            first_line = True
            total_sql = ""

            for line in logfile.readlines():
                sql_is_completed = self._sql_completed(line)

                if first_line:
                    total_sql = line
                else:
                    if sql_is_completed:
                        self._print_line(total_sql)
                        total_sql = line
                    else:
                        total_sql = total_sql.rstrip() +" "+line.strip()
                first_line = False
            self._print_line(total_sql)

        except Exception, e:
            print e
        finally:
            logfile.close()
            self.logfile_parsed.close()

入口：

#!/usr/bin/env python26
#-*- coding: utf-8 -*-
import re
import sys
import os
import getopt
from GeneralLogParser import *

def usage():
        help_msg='''Usage: ./mysql_log_parser.py [option][value]...
        -h or --help
        -s or --source_log="原始general log"
        -o or --output_file = "添加时间戳以及多行处理后的log，默认是在原始general log路径后加_parsed后缀"'''
        print help_msg
        return 0

def option_parse(argv):
        shortargs = 'hs:o:'
        longargs = ['help','source_log=','output_file']

        opts_list,args = getopt.getopt(argv,shortargs,longargs)

        source_log = None
        output_file = None

        for opt,arg in opts_list:
                if opt in ('-h','--help'):
                        usage()
                        sys.exit()
                elif opt in ('-s','--source_log'):
                        source_log = arg
                elif opt in ('-o','--output_file'):
                        output_file = arg
        return source_log,output_file

def main():
        if len(sys.argv) == 1:
                usage()
                sys.exit(1)
        source_log,output_file = option_parse(sys.argv[1:])

        mysql_log = MySQL_Log_Parse(source_log,output_file)
        mysql_log.log_parse()

if __name__ == "__main__":
        main()

后续工作

1、多线程分块读取并发转换

2、代码规范化

3、mysql  打印日志过程分析