1 #查找
2 def search(website ):
3 reault_list = []#存放查询结果
4 search_flag = False #定义查询结果标志
5
6 with open('haproxy','r',encoding= 'utf-8') as f:
7 for line in f:#if语句顺序进行，当前条件判断完，进入下一判断
8 if 'backend {}'.format(website) == line.strip():#找到backend www.oldboy.org 开始截取
9 search_flag = True
10 if line.strip().startswith('backend') and 'backend {}'.format(website) != line.strip() :#找到下一个 backend www.xxx.com部分结束，截取其中部分
11 search_flag = False
12 if search_flag:
13 reault_list.append(line .strip() )
14 print(reault_list )
15 f.close()
16 if reault_list == []:
17 print('对不起，您查询的网址不存在！')
18 else:
19 return reault_list
20
21 #增加
22 def add(website):
23 arg = eval(website) #将输入的字符串转变为字典
24 backend_title = 'backend {}'.format(arg['backend'])# 要插入backend的字段
25 record_title = arg['record']
26 context_record = 'server {0}{0} weight {1} maxconn {2}'.\
27 format(record_title['server'],record_title['weight'],record_title['maxconn'] )
28 add_flag = True#设置新增标志位
29 with open('haproxy', 'r+', encoding='utf-8') as f:
30 for line in f:
31 if line.strip() == backend_title:
32 print("您新增的网址已经存在！")
33 add_flag = False
34 if add_flag:
35 f.write('\n{}'.format(backend_title))
36 f.write('\n\t\t{}'.format(context_record))
37 f.close()
38
39 #删除
40 def delete(website):
41 delete_flag = False #设置删除标志位
42 delete_result = True
43 with open('haproxy', 'r', encoding='utf-8') as f,\
44 open('haproxy_bak', 'w') as f1:
45 for line in f:
46 if 'backend {}'.format(website ) == line.strip():
47 delete_flag = True
48 delete_result = False
49 continue
50 if line.strip().startswith('backend') and line.strip() != website:
51 delete_flag = False
52 if not delete_flag:
53 f1.write(line)
54 if delete_result :
55 print("您删除的网址不存在！")
56 with open('haproxy', 'w') as f, \
57 open('haproxy_bak', 'r', encoding='utf-8') as f1:
58 for line in f1:
59 f.write(line)
60
61 #修改
62 def update(website):
63 arg = eval(website )
64 # print(arg)
65 backend_title = "backend {}".format(arg['backend']) # 要插入backend整个字段
66 # print(backend_title)
67 record_title = arg["record"]
68 context_record = "server {0} {0} weight {1} maxconn {2}". \
69 format(record_title['server'], record_title['weight'], record_title['maxconn'])
70 print(context_record)
71
72 update_flag = False #设置修改标志位
73 update_re = False #设置重复修改位
74
75 with open('haproxy', 'r', encoding='utf-8') as f, \
76 open('haproxy_bak', 'w') as f1:
77 for line in f:
78 if line.strip() == backend_title:
79 update_flag = True
80 continue #如果出现修改backend_title,设置修改标志位为True。
81 if line.strip().startswith('backend') and line.strip() != backend_title :
82 update_flag = False #捕捉到下一个backend_title,设置修改标志位为False。
83 if not update_flag:
84 f1.write(line)
85 if update_flag and not update_re: #修改标志位为True,并且没有被修改过
86 f1.write('\n{}'.format(backend_title))
87 f1.write('\n\t\t{}\n'.format(context_record))
88 update_re = True
89
90 with open('haproxy', 'w') as f, \
91 open('haproxy_bak', 'r', encoding='utf-8') as f1:
92 for line in f1:
93 f.write(line)
94
95
96
97 #主函数
98 while True:
99 print('欢迎进入haproxy配置程序'.center(50,'-') )
100 print( '\n1 查询\n')
101 print(' 2 新增\n')
102 print(' 3 删除\n')
103 print(' 4 修改\n')
104 op_haproxy = input('选择要进入模式的ID-》：')
105 if op_haproxy == '1':
106 website = input('请输入要查询的网址：\n'
107 '例如www.oldboy.org')
108 search(website )
109 elif op_haproxy == '2':
110 website = input("请输入要新增的网址配置："
111 "例如：{'backend': 'www.baidu.com','record': {'server': '100.1.7.8',"
112 "'weight': 20,'maxconn': 3000}}\n")
113 add(website)
114 elif op_haproxy == '3':
115 website = input("请输入要删除的网址配置："
116 "例如：www.baidu.com\n")
117
118 delete(website)
119 elif op_haproxy == '4':
120 website = input("请输入要修改的网址配置："
121 "例如：{'backend': 'www.baidu.com','record': {'server': '100.1.7.8',"
122 "'weight': 20,'maxconn': 3000}}\n")
123 update(website)
124 elif op_haproxy == 'q':
125 break
126 else:
127 print("请检查您的输入！")
