AOF parse

AOF文件格式简单，易于解析

AOF文件格式

*N is the number of arguments of the command.
$M is the length, i.e. the number of bytes, of each argument.

AOF 解析

#!/usr/bin/python
# coding=utf8
"""
# Author: wangbin34
# Created Time : 2022-08-09 17:13:04

# File Name: aof_parse.py
# Description:

    *N 是命令的参数个数
    $M 是每个参数的长度，即字节数。

    size 为命令开始字节数
"""

start_size = 0
end_size = 0
command_aof_size = 0
command = ""
with open("./appendonly.aof_bak") as f:
    for line in f:
        if line.startswith("*"):
            end_size = start_size + command_aof_size
            # 输出上条命令
            print "start_size={start_size}, end_size={end_size} command=[{command} ]".format(start_size=start_size,
                    end_size=end_size, command=command)

            # 开始统计下一条命令
            start_size = start_size + command_aof_size
            command = ""
            command_aof_size = 0
            command_aof_size = command_aof_size + len(line)
            continue

        command_aof_size = command_aof_size + len(line)
        if line.startswith("$"):
            continue

        command = command + " " + line.strip()

# 最后一条命令
end_size = start_size + command_aof_size
# 输出上条命令
print "start_size={start_size}, end_size={end_size} command=[{command} ]".format(start_size=start_size,
        end_size=end_size, command=command)