Source Code for Module XMLRPCServer

 1  # Copyright (C) 2005, 2006 Joint Institute for VLBI in Europe 
 2  # 
 3  # This program is free software; you can redistribute it and/or modify 
 4  # it under the terms of the GNU General Public License as published by 
 5  # the Free Software Foundation; either version 2 of the License, or 
 6  # (at your option) any later version. 
 7  # 
 8  # This program is distributed in the hope that it will be useful, 
 9  # but WITHOUT ANY WARRANTY; without even the implied warranty of 
10  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
11  # GNU General Public License for more details. 
12   
13  # You should have received a copy of the GNU General Public License 
14  # along with this program; if not, write to the Free Software 
15  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
16   
17  """ 
18   
19  This module provides a simple XML-RPC server that can run classic AIPS 
20  tasks and provide verb-like access to AIPS data on a machine. 
21   
22  """ 
23   
24  import sys 
25  import xmlrpclib 
26  # Stolen shamelessly from Thomas Bellman, on the Python-list, June 2006. 
27  # WARNING: Dirty hack below. 
28  # Replace the dumps() function in xmlrpclib with one that by default 
29  # handles None, so SimpleXMLRPCServer can return None. 
30 -class _xmldumps(object): 
31 -        def __init__(self, dumps): 
32                  self.__dumps = (dumps,) 
33 -        def __call__(self, *args, **kwargs): 
34                  kwargs.setdefault('allow_none', 1) 
35                  return self.__dumps[0](*args, **kwargs) 
36  xmlrpclib.dumps = _xmldumps(xmlrpclib.dumps) 
37   
38  from SimpleXMLRPCServer import SimpleXMLRPCServer 
39  from SocketServer import ThreadingMixIn 
40   
41  # Global AIPS defaults. 
42  import AIPS 
43   
44  # Import AIPS modules. 
45  import Proxy.AIPSTask 
46  import Proxy.AIPSData 
47   
48 -class XMLRPCServer(SimpleXMLRPCServer): 
49      allow_reuse_address = True 
50      pass 
51   
52 -class ServerFuncs: 
53 -    def __init__(self): 
54          self.AIPSTask = Proxy.AIPSTask.AIPSTask() 
55          self.AIPSUVData = Proxy.AIPSData.AIPSUVData() 
56          self.AIPSImage = Proxy.AIPSData.AIPSImage() 
57          self.AIPSCat = Proxy.AIPSData.AIPSCat() 
58          return 
59   
60 -    def _dispatch(self, name, args): 
61          # For security reasons, SimpleXMLRPCServer in Python 
62          # 2.3.5/2.4.1, no longer resolves names with a dot in it.  Se 
63          # here we explicitly accept names starting with 'AIPS' and 
64          # containing a single dot; that should be safe enough. 
65          if name.startswith('AIPS') and name.count('.') == 1: 
66              name = name.split('.') 
67              inst = getattr(self, name[0]) 
68              method = getattr(inst, name[1]) 
69              return method(*args) 
70          msg = "object has no attribute '%s'" % name 
71          raise AttributeError, msg 
72   
73      pass                                # class ServerFuncs 
74   
75  # This bit of unpleasantness comes about from the ugly hack that is the 
76  # _xmldumps class above. Python 2.5 supports the "allow_none" attribute for 
77  # SimpleXMLRPCServer objects, whereas Python 2.1 t/m 2.4 require the 
78  # _xmldumps redefinition above. However, these versions will break if 
79  # "allow_none" is passed to the constructor, and the _xmldumps hack doesn't 
80  # work with Python 2.5. So... 
81  if sys.hexversion >= 0x020500f0 : 
82          server = XMLRPCServer(('', 8000), allow_none = 1) 
83  else : 
84          server = XMLRPCServer(('', 8000)) 
85   
86  if __name__ == "__main__" : 
87          server.register_instance(ServerFuncs()) 
88          server.serve_forever() 
89