python 网站文件及数据库备份脚本

初学python，试着写了一份python网站文件备份和数据库备份的脚本，功能是写出来了，但感觉还是不太适应，写得不太好，以后还要努力哈！backup.py读取backup.xml的信息，进行相关操作，至于为啥要把信息写在xml里，因为感觉用xml很酷，哈哈没啥的，学习麻，想用就用一下哈。

backup.xml:

1. <?xml version="1.0"?> 
2. <config> 
3.         <backupdir>/backup/</backupdir> 
4.         <dbbackup id="1"> 
5.                 <host>192.168.1.100</host> 
6.                 <user>root</user> 
7.                 <passwd>123456</passwd> 
8.                 <dbname>test1</dbname> 
9.         </dbbackup> 
10.         <dbbackup id="2"> 
11.                 <host>192.168.1.101</host> 
12.                 <user>root</user> 
13.                 <passwd>123456</passwd> 
14.                 <dbname>test2</dbname> 
15.         </dbbackup> 
16.         <webbackup id="1"> 
17.                 <dir>/data/www</dir> 
18.         </webbackup> 
19. </config> 

backup.py:

1. #!/usr/bin/env python  
2.  
3. from xml.dom import minidom  
4. import time  
5. import os  
6. import re  
7.  
8. dom = minidom.parse('backup.xml')  
9.  
10. class readxml:  
11.         def getText(self, node):  
12.                 return node.childNodes[0].data  
13.  
14.         def getId(self, node, id):  
15.                 return node.getAttribute(id)  
16.  
17.         def getGroupText(self, model):  
18.                 dbinfo = {}  
19.                 xml_groups = dom.getElementsByTagName(model)  
20.                 for group in xml_groups:  
21.                         groupid = self.getId(group, 'id')  
22.                         dbinfo_one = {}  
23.                         for node in group.childNodes:  
24.                                 if node.nodeType == node.ELEMENT_NODE:  
25.                                         dbinfo_one[node.nodeName] = self.getText(node)  
26.                                         dbinfo[groupid] = dbinfo_one  
27.                 return dbinfo  
28.  
29. class back:  
30.         def webbackup(self, webgroup):  
31.                 for i in webgroup:  
32.                         filename = mydate + re.sub('/', '_', webgroup.get(i).get('dir')) + ".tar.gz" 
33.                         command = "tar zcvfp '%s' %s" % (today + os.sep + filename, webgroup.get(i).get('dir'))  
34.                         os.system(command)  
35.                           
36.         def dbbackup(self, dbgroup):  
37.                 mysqlpath="/usr/local/mysql/bin/mysqldump" 
38.                 for i in dbgroup:  
39.                         filename = today + os.sep + mydate + "_" + dbgroup.get(i).get('dbname') + ".sql.gz" 
40.                         command = "%s --opt -u%s -p%s -h%s %s | gzip > %s" % (mysqlpath, dbgroup.get(i).get('user'), dbgroup.get(i).get('passwd'), dbgroup.get(i).get('host'), dbgroup.get(i).get('dbname'), filename)  
41.                         os.system(command)  
42.                                       
43. xmlconfig = readxml()  
44. backupdir = xmlconfig.getText(dom.getElementsByTagName('backupdir')[0])  
45. dbbackup = xmlconfig.getGroupText('dbbackup')  
46. webbackup = xmlconfig.getGroupText('webbackup')  
47.  
48. mydate = time.strftime('%Y%m%d')  
49. today=backupdir + mydate  
50. if not os.path.exists(today):  
51.         os.makedirs(today)  
52.  
53. back().webbackup(webbackup)  
54. back().dbbackup(dbbackup)