python 基础 4.1 open 打开文件练习：修改haproxy配置文件
1、如何在线上环境优雅的修改配置文件?
配置文件名称ini
global log 127.0.0.1 local2 daemon maxconn 256 log 127.0.0.1 local2 info defaults log global mode http timeout connect 5000ms timeout client 50000ms timeout server 50000ms option dontlognull listen stats :8888 stats enable stats uri /admin stats auth admin:1234 frontend oldboy.org bind 0.0.0.0:80 option httplog option httpclose option forwardfor log global acl www hdr_reg(host) -i www.oldboy.org use_backend www.oldboy.org if www backend www.oldboy.org server 100.1.7.9 100.1.7.9 weight 20 maxconn 3000
1、查 输入：www.oldboy.org 获取当前backend下的所有记录 2、新建 输入： arg = { 'bakend': 'www.oldboy.org', 'record':{ 'server': '100.1.7.9', 'weight': 20, 'maxconn': 30 } } 3、删除 输入： arg = { 'bakend': 'www.oldboy.org', 'record':{ 'server': '100.1.7.9', 'weight': 20, 'maxconn': 30 } }
我的代码： 配置文件代码ini
#!/usr/bin/env python
#_*_coding:utf-8
__author__ = 'liujianzuo'
arg = {
'bakend': '',
'record': {
'server': '',
'weight': "",
'maxconn': ""
}
}
# arg = {'bakend': 'www.baidu.com', 'record': {'maxconn': '1', 'weight': '32232', 'server': '11.77.22.2'}}
def ming():
l2 = []
name = input("输入添加条目的域名：").strip()
IP = input("输入添加条目的IP：").strip()
weight = input("输入添加条目的weight：").strip()
maxconn = input("输入添加条目的maxconn：").strip()
l2.append(name)
l2.append(IP)
l2.append(weight)
l2.append(maxconn)
arg["bakend"] = name
arg["record"]["server"] = IP
arg["record"]["weight"] = weight
arg["record"]["maxconn"] = maxconn
return l2
def file_hand(name):
flag = 0
li = []
with open("ini",'r',encoding="utf-8") as f:
for l in f:
if l.strip() == "backend %s" % name:
flag = 1
continue
if flag and l.strip().startswith("backend"):
flag = 0
if flag :
li.append(l.strip())
return li
def add_file(add_content):
l1 = []
name = arg["bakend"]
ret = file_hand(name)
x = arg["record"]
new_line = "server" + " " + str(x["server"]) + " " + str(x["server"]) + " " + "weight" + " " + str(x["weight"]) + " " + "maxconn" + " " + str(x["maxconn"])
if len(ret) == 0:
with open("ini", "a+", encoding="utf-8") as f:
f.write("\nbackend %s"%name)
f.write("\n\t\t%s"%new_line)
else:
n_flag = 0
with open("ini","r",encoding='utf-8') as f1:
for m in f1:
if len(m.strip()) == 0:
continue
l1.append(m)
with open("ini",'w',encoding="utf-8") as f2:
for line in l1:
if ( n_flag == 1 or n_flag ==2 or n_flag ==3) and line.strip().startswith("backend"):
n_flag = 3
f2.write("\n%s"%line.strip())
elif not n_flag and line.strip() != "backend %s"%name:
if len(line) == 0:
continue
else:
f2.write(line)
elif n_flag and line.strip() != "backend %s"%name:
if new_line not in ret :
n_flag =2
ret.append(new_line)
for kli in ret:
f2.write("\n\t\t%s"%kli)
else:
if n_flag == 2:
continue
elif n_flag == 3:
f2.write("\n\t\t%s"%line.strip())
elif line.strip() == "backend %s"%name:
n_flag = 1
f2.write(line.strip())
continue
return new_line
def del_conf(add_content):
l1 = []
name = arg["bakend"]
ret = file_hand(name)
x = arg["record"]
new_line = "server" + " " + str(x["server"]) + " " + str(x["server"]) + " " + "weight" + " " + str(x["weight"]) + " " + "maxconn" + " " + str(x["maxconn"])
if len(ret) == 0:
with open("ini", "a+", encoding="utf-8") as f:
f.write("\nbackend %s"%name)
f.write("\n\t\t%s"%new_line)
else:
n_flag = 0
with open("ini","r",encoding='utf-8') as f1:
for m in f1:
if len(m.strip())==0:
continue
l1.append(m)
with open("ini",'w',encoding="utf-8") as f2:
for line in l1:
if ( n_flag == 1 or n_flag ==2 or n_flag ==3) and line.strip().startswith("backend"):
n_flag = 3
f2.write("\n%s"%line.strip())
elif not n_flag and line.strip() != "backend %s"%name:
f2.write(line)
elif n_flag and line.strip() != "backend %s"%name:
if new_line in ret:
n_flag =2
ret.remove(new_line)
for kli in ret:
f2.write("\n\t\t%s"%kli)
elif new_line == line:
continue
else:
if n_flag == 2:
continue
elif n_flag == 3:
f2.write("\n\t\t%s"%line.strip())
elif line.strip() == "backend %s"%name:
n_flag = 1
continue
return new_line
def main():
print("""\033[33;1m\
=============
|1 获取数据|
|2 添加数据|
|3 删除数据|
=============\033[0m\
""")
while True:
chose = input("pls input your chose,q|Q for leave:").strip()
if len(chose) == 0:
continue
elif chose.lower() == "q":
exit("bye bye")
elif not chose.isdigit():
continue
elif int(chose) == 1:
name = input("输入查询的域名：").strip()
ret = file_hand(name)
if len(ret) == 0:
print("你要查询的域名不存在")
else:
for x in ret:
print(x)
main()
elif int(chose) == 2:
ret = ming()
name = ret[0]
ret = add_file(name)
print("添加的数据如下：",ret)
main()
elif int(chose) == 3:
ret = ming()
name = ret[0]
ret = del_conf(name)
print("删除的数据如下：",ret)
main()
else:
print("序号不存在！")
main()
if __name__ == "__main__":
main()
# name = "www.baidu.com"
# name = arg["bakend"]
# ret = file_hand(name)
# print(ret)
# add_file(name)
# del_conf(name)
