1 # XMLRPC-specific code for SFA Client
6 from sfa.util.sfalogging import sfa_logger
9 # ServerException, ExceptionUnmarshaller
11 # Used to convert server exception strings back to an exception.
12 # from usenet, Raghuram Devarakonda
14 class ServerException(Exception):
17 class ExceptionUnmarshaller(xmlrpclib.Unmarshaller):
20 return xmlrpclib.Unmarshaller.close(self)
21 except xmlrpclib.Fault, e:
22 raise ServerException(e.faultString)
27 # A transport for XMLRPC that works on top of HTTPS
29 # python 2.7 xmlrpclib has changed its internal code
30 # it now calls 'getresponse' on the obj returned by make_connection
31 # while it used to call 'getreply'
32 # regardless of the version, httplib.HTTPS does implement getreply,
33 # while httplib.HTTPSConnection has getresponse
34 # so we create a dummy instance to check what's expected
35 need_HTTPSConnection=hasattr(xmlrpclib.Transport().make_connection('localhost'),'getresponse')
37 class XMLRPCTransport(xmlrpclib.Transport):
40 def make_connection(self, host):
41 # create a HTTPS connection object from a host descriptor
42 # host may be a string, or a (host, x509-dict) tuple
43 host, extra_headers, x509 = self.get_host_info(host)
44 if need_HTTPSConnection:
45 return httplib.HTTPSConnection(host, None, key_file=self.key_file, cert_file=self.cert_file) #**(x509 or {}))
47 return httplib.HTTPS(host, None, key_file=self.key_file, cert_file=self.cert_file) #**(x509 or {}))
50 unmarshaller = ExceptionUnmarshaller()
51 parser = xmlrpclib.ExpatParser(unmarshaller)
52 return parser, unmarshaller
54 class XMLRPCServerProxy(xmlrpclib.ServerProxy):
55 def __init__(self, url, transport, allow_none=True, options=None):
57 if options and options.debug:
59 sfa_logger().info ("Connecting to xmlrpcserver at %s (with verbose=%s)"%(url,verbose))
60 xmlrpclib.ServerProxy.__init__(self, url, transport, allow_none=allow_none, verbose=verbose)
62 def __getattr__(self, attr):
63 sfa_logger().info ("Calling xml-rpc method:%s"%attr)
64 return xmlrpclib.ServerProxy.__getattr__(self, attr)
67 def get_server(url, key_file, cert_file, options=None):
68 transport = XMLRPCTransport()
69 transport.key_file = key_file
70 transport.cert_file = cert_file
72 return XMLRPCServerProxy(url, transport, allow_none=True, options=options)