如果数据库误操作想恢复数据。可以试试下面这个脚本。前提是执行DML操作。
#!/bin/env python
#coding:utf-8
#Author: Hogan
#Descript : 解析binlog生成MySQL回滚脚本 import getopt
import sys
import os
import re
import pymysql # 设置默认值
host = '127.0.0.1'
port = 3306
user = ''
password = ''
start_datetime = '1971-01-01 00:00:00'
stop_datetime = '2037-01-01 00:00:00'
start_position = ''
stop_position = ''
database = ''
mysqlbinlog = 'mysqlbinlog -v --base64-output=decode-rows '
binlogfile = ''
output = 'rollback.sql' # 提示信息
def usage():
help_info="""==========================================================================================
Command line options :
--help # OUT : print help info
-f, --binlogfile # IN : binlog file. (required)
-o, --outfile # OUT : output rollback sql file. (default 'rollback.sql')
-h, --host # IN : host. (default '127.0.0.1')
-u, --user # IN : user. (required)
-p, --password # IN : password. (required)
-P, --port # IN : port. (default 3306)
--start-datetime # IN : start datetime. (default '1970-01-01 00:00:00')
--stop-datetime # IN : stop datetime. default '2070-01-01 00:00:00'
--start-position # IN : start position. (default '4')
--stop-position # IN : stop position. (default '18446744073709551615')
-d, --database # IN : List entries for just this database (No default value).
--only-primary # IN : Only list primary key in where condition (default 0) Sample :
shell> python rollback.py -f 'mysql-bin.000001' -o '/tmp/rollback.sql' -h 192.168.0.1 -u 'user' -p 'pwd' -P 3307 -d dbname
==========================================================================================""" print(help_info)
sys.exit() # 获取参数，生成binlog解析文件
def getops_parse_binlog():
global host
global user
global password
global port
global database
global start_datetime
global stop_datetime
global start_position
global stop_position
global binlogfile
global only_primary
global fileContent
global output try:
options, args = getopt.getopt(sys.argv[1:], "f:o:h:P:u:p:d", ["help", "binlogfile=","--output=","host=","port=","user=","password=","database=","start-datetime=",
"stop-datetime=","start-position=","stop-position=","only-primary="])
except getopt.GetoptError:
print('参数错误！')
options = []
if options == [] or 'help' in options[0][0]:
usage()
sys.exit()
print("正在获取参数......")
# print(options)
for name, value in options:
if name in ('-f', '--binlogfile='):
binlogfile = value
if name in ('-o', '--output='):
output = value
if name in ('-h', '--host='):
host = value
if name in ('-P', '--port='):
port = value
if name in ('-u', '--user='):
user = value
if name in ('-p', '--password='):
password = value
if name in ('-d', '--database='):
database = value
if name == '--start-datetime=':
start_datetime = value
if name == '--stop-datetime=':
stop_datetime = value
if name == '--start-position=':
start_position = value
if name == '--stop-position=':
stop_position = value
if name == '--only-primary':
only_primary = value
if not binlogfile:
print("错误:请指定binlog文件名")
usage()
if not user:
print("错误:请指定用户名！")
usage()
if not password:
print("错误:请指定密码！")
usage()
if database:
condition_database = "--database='" + database + "'"
else:
condition_database = ''
print("正在解析binlog......")
cmd = ("%s --start-position=%s --stop-position=%s --start-datetime='%s' --stop-datetime='%s' %s %s| grep '###' -B 2 | sed -e 's/### //g' | sed -e 's/^INSERT/##INSERT/g' -e 's/^UPDATE/##UPDATE/g'\
-e 's/^DELETE/##DELETE/g'" % (mysqlbinlog, start_position, stop_position, start_datetime, stop_datetime, binlogfile, condition_database )) fileContent = os.popen(cmd).read() # 初始化binlog里的表名和列名，用全局字典result_dict来存储表名，列名
def init_clo_name():
global result_dict
global col_dict
result_dict = {}
# 统计binlog中出现的所有库名.表名
table_list = list(set(re.findall('`.*`\\.`.*`', fileContent))) for table in table_list:
db_name = table.split('.')[0].strip('`')
table_name = table.split('.')[1].strip('`')
# 连接数据库获取字段id
try:
conn = pymysql.connect(host=host, port=int(port), user=user, password=password)
cursor = conn.cursor()
# 获取字段名，字段position
cursor.execute("select ordinal_position, column_name from information_schema.columns where table_schema='%s' and table_name='%s'" %(db_name,table_name))
result = cursor.fetchall()
if result == ():
print('Warning: ' + db_name + '.' + table_name + '已删除')
result_dict[db_name+'.'+table_name] = result
except pymysql.Error as e:
try:
print("Error %d:%s" % (e.args[0], e.args[1]))
except IndexError:
print("MySQL Error:%s" % str(e))
sys.exit() # 拼接反向生成回滚SQL
def gen_rollback_sql():
# 打开输出文件
fileOutput = open(output, 'w')
print('正在拼凑SQL......')
# 将binlog解析的文件通过'--'进行分割，每块代表一个sql
area_list = fileContent.split('--\n')
# 逆序读取分块
for area in area_list[::-1]:
sql_list = area.split('##')
for sql_head in sql_list[0].splitlines():
sql_head = '#' + sql_head + '\n'
fileOutput.write(sql_head)
# 逐条对SQL进行替换更新，逆序
for sql in sql_list[::-1][:-1]:
try:
# 对insert语句进行拼接
if sql.split()[0] == 'INSERT':
rollback_sql = re.sub('^INSERT INTO', 'DELETE FROM', sql, 1)
rollback_sql = re.sub('SET\n' , 'WHERE\n', rollback_sql, 1)
table_name = rollback_sql.split()[2].replace('`','')
# 获取该SQL所有列
col_list = sorted(list(set(re.findall('@\d+', rollback_sql))))
# 因为第一个列前面没有逗号或者and，所以单独替换
rollback_sql = rollback_sql.replace('@1', result_dict[table_name][0][1] )
# 替换其他列
for col in col_list[1:]:
col_int = int(col[1:]) -1
rollback_sql = rollback_sql.replace(col, 'and '+ result_dict[table_name][col_int][1],1 ) #对update语句进行拼接
if sql.split()[0] == 'UPDATE':
rollback_sql = re.sub('SET\n', '#SET#\n', sql, 1)
rollback_sql = re.sub('WHERE\n', 'SET\n', rollback_sql, 1)
rollback_sql = re.sub('#SET#\n', 'WHERE\n',rollback_sql, 1)
table_name = rollback_sql.split()[1].replace('`','')
# 获取该SQL所有列
col_list = sorted(list(set(re.findall('@\d+', rollback_sql))))
# 因为第一个列前面没有逗号或者and，所以单独替换
rollback_sql = rollback_sql.replace('@1', result_dict[table_name][0][1] )
# 替换其他列
for col in col_list[1:]:
col_int = int(col[1:]) -1
rollback_sql = rollback_sql.replace(col, ','+ result_dict[table_name][col_int][1],1 ).replace(col,'and '+result_dict[table_name][col_int][1]) # 对delete语句进行拼接
if sql.split()[0] == 'DELETE':
rollback_sql = re.sub('^DELETE FROM', 'INSERT INTO', sql, 1)
rollback_sql = re.sub('WHERE', 'SET', rollback_sql, 1)
table_name = rollback_sql.split()[2].replace('`','')
# 获取该SQL所有列
col_list = sorted(list(set(re.findall('@\d+', rollback_sql))))
# 因为第一个列前面没有逗号或者and，所以单独替换
rollback_sql = rollback_sql.replace('@1', result_dict[table_name][0][1] )
# 替换其他列
for col in col_list[1:]:
col_int = int(col[1:]) -1
rollback_sql = rollback_sql.replace(col, ', '+ result_dict[table_name][col_int][1],1 )
#SQL结尾加;
rollback_sql = re.sub('\n$', ';', rollback_sql)
rollback_sql = re.sub('\n', '', rollback_sql)
rollback_sql = re.sub(';', ';\n', rollback_sql)
fileOutput.write(rollback_sql)
except IndexError as e:
print ("Error:%s" % str(e))
sys.exit()
print ("done!") if __name__ == '__main__':
getops_parse_binlog()
init_clo_name()
gen_rollback_sql()