需求如下：
1、動態的查詢新增刪除haproxy節點資訊
2、程式功能：add（新增）、del（刪除）、query（查詢）
3、新增時例項字串為： }
**：
1#author:lee sir
2import
sys3
45 haproxyconf = r"
e:\python練習指令碼\day3\haproxy.txt
"6 haproxyconf_temp = r"
e:\python練習指令碼\day3\haproxy_temp.txt"7
8def
openconf(file,mode):
9 fd = open(file,'
%s' %mode)
10return
fd11
12def
closeconf(fd):
13fd.close()
1415
defuser_choice():
16 choice = ['
query
','add
','delete
','update']
17for index,key in
enumerate(choice):
18print
(index,key)
19while
true:
20 userchoice = input('
please number for your choice: ')
21if userchoice.isdigit() and int(userchoice) >= 0 and int(userchoice) < 3:
22return
userchoice
23elif userchoice == 'q'
or userchoice == 'q'
:24 sys.exit('
bye bye')
25else:26
print('
input error,please try again')
2728
deflistnode():
29 conf = openconf(haproxyconf,'r'
)30 key = input('
please input your query node name: ')
31 count =0
32for line in
conf:
33if key in line and line.strip().startswith('
backend'):
34 result =true
35 nodenumber = 1
36while
result:
37 nodeinfo =conf.readline()
38if nodeinfo.strip().startswith('
server'):
39print('
節點 %s:%s
' %(nodenumber,nodeinfo.strip()))
40 count += 1
41 nodenumber += 1
42else
:43 result =false
44if count ==0:
45print('
\033[31;1mno node for %s\033[0m
' %key)
46closeconf(conf)
4748
defdelenode():
49 conf = openconf(haproxyconf,'r'
)50 key = input('
please input delete node: ')
51 conf_list =
52for line in
conf:
53if line.strip().startswith('
backend'):
54if key in
line:
5556
while
true:
57 nodeinfo =conf.readline()
58if nodeinfo.strip().startswith('
server'):
5960
else:61
break
62else:63
if len(conf_list) >0:
64 old_conf = openconf(haproxyconf,'r'
)65 write_conf = openconf(haproxyconf_temp,'w'
)66for info in
old_conf:
67if info in
conf_list:
68continue
69else:70
write_conf.write(info)
71else:72
closeconf(old_conf)
73closeconf(write_conf)
74print('
delete node:%s successful!
' %key )
75else
:76 sys.exit('
no node info for %s
' %key)
7778
defaddnode():
79 conf = openconf(haproxyconf_temp,'r'
)80#nodeinfo = '''}'''
81 nodeinfo = input('
please input your add node info:')
82 nodeinfo =eval(nodeinfo)
83if
isinstance(nodeinfo,dict):
84 backend = nodeinfo['
backend']
85for line in
conf:
86if line.strip().startswith('
backend'):
87if backend in
line:
88 sys.exit('
the node are exist!')
89else
:90 add_wirte = openconf(haproxyconf_temp,'a'
)91 backend = nodeinfo['
backend']
92 record = nodeinfo['
record']
93 server = record['
server']
94 weight = record['
weight']
95 maxconn = record['
maxconn']
96 node_info = '''
\nbackend %s\n\t\tserver %s %s weight %s maxconn %s
97''' %(backend,server,server,weight,maxconn)
98add_wirte.write(node_info)
99print('
the node:%s add successful!
' %backend )
100else
:101 sys.exit('
input error,bye bye!')
102103
104def
main():
105 userchoice =user_choice()
106if userchoice == '0'
:107
listnode()
108elif userchoice == '1'
:109
addnode()
110elif userchoice == '2'
:111
delenode()
112113
114if
__name__ == '
__main__':
115 main()
posted @
2017-03-17 22:27
dahlhin 閱讀(
...)
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