Python 查找binlog文件

经常需要在 binlog 中查找一些日志信息，于是写了一个简单的脚本。对于非常巨大的 binlog 文件，该脚本可能会速度慢，毕竟还是用的 list，暂时没想到好办法。

详细看代码：

#/usr/bin/python

#2016-04-12

#search string in the binlogs

#usage:
#put this file into binlog-dir,exec as:
#"python test.py 111 123 update" or
#"python test.py 111 123 update and insert" or
#"python test.py 111 123 update or delete"
#the nums are the binlog-num.

import sys
import subprocess

def find_str(files):
    for file in files:
        comm = "mysqlbinlog {0}".format(file)
        lines = subprocess.Popen(comm, shell=True, stdout=subprocess.PIPE)
        lines = lines.stdout.readlines()
        for line in lines:
            line = line.lower()
            if len(sys.argv) == 4:
                if sys.argv[3] + ‘ ‘ in line:
                    yield line
            elif len(sys.argv) == 6 and sys.argv[4] == "and":
                if sys.argv[3] + ‘ ‘ and sys.argv[5] + ‘ ‘ in line:
                    yield line
            elif len(sys.argv) == 6 and sys.argv[4] == "or":
                if sys.argv[3] + ‘ ‘ or sys.argv[5] + ‘ ‘ in line:
                    yield line

if __name__ == "__main__":
    start = sys.argv[1]
    end = sys.argv[2]
    files = ["updatelog.{0:06d}".format(i) for i in range(int(start), int(end)+1)]    

    f = find_str(files)
    for i in f:
        print(i)