提取MySQL binlog中指定表的操作记录

#_*_ coding:utf-8 _*_

import sys
import os
import io

binlogfile = sys.argv[1]
database_name = sys.argv[2]
table_name = sys.argv[3]

def format_binlog():
os.system('mysqlbinlog --base64-output=decode-rows -v '+binlogfile+'>'+binlogfile+'.txt')

def pickupbinlog():
f = io.open(binlogfile+'.txt','r')
fw = io.open(database_name+'_'+table_name+'.txt','a')
priv_str = ''
priv_line = ''
goal_flag = 0
for row in f:
# 处理首行
if row[0:3] == '###' and priv_str != '###':
if database_name in row and table_name in row:
goal_flag = 1
fw.write(priv_line)
fw.write(row)
# 处理末行
if row[0:3] != '###' and priv_str == '###':
goal_flag = 0
# 处理目标操作
if row[0:3] == '###' and priv_str == '###' and goal_flag == 1:
fw.write(row)
priv_str = row[0:3]
priv_line = row
f.close()
fw.close()

if __name__ == '__main__':
# python2.7 pickupbinlog.py mysql-bin.001051 dbname tablename
# python3 pickupbinlog.py mysql-bin.001051 dbname tablename
format_binlog()
pickupbinlog()