Logo Questions Linux Laravel Mysql Ubuntu Git Menu
 

How to see traceback on xmlrpc server, not client?

I have simple xmlrpc server code:

from SimpleXMLRPCServer import SimpleXMLRPCServer

port = 9999

def func():
    print 'Hi!'
    print x # error!
    print 'Bye!'

if __name__ == '__main__':
    server = SimpleXMLRPCServer(("localhost", port))
    print "Listening on port %s..." % port
    server.register_function(func)
    server.serve_forever()

Sample session.

Client:

>>> import xmlrpclib
>>> p = xmlrpclib.ServerProxy('http://localhost:9999')
>>> p.func()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python26\lib\xmlrpclib.py", line 1199, in __call__
    return self.__send(self.__name, args)
  File "C:\Python26\lib\xmlrpclib.py", line 1489, in __request
    verbose=self.__verbose
  File "C:\Python26\lib\xmlrpclib.py", line 1253, in request
    return self._parse_response(h.getfile(), sock)
  File "C:\Python26\lib\xmlrpclib.py", line 1392, in _parse_response
    return u.close()
  File "C:\Python26\lib\xmlrpclib.py", line 838, in close
    raise Fault(**self._stack[0])
xmlrpclib.Fault: <Fault 1: "<type 'exceptions.NameError'>:global name 'x' is not defined">
>>>

Server:

Listening on port 9999...
Hi!
localhost - - [11/Jan/2011 16:17:09] "POST /RPC2 HTTP/1.0" 200 -

The question is if I can get this trace back also on server. I need to know if something went wrong with processing query. I'm not using client written in Python so it is hard for me to get traceback like above.

like image 935
Adam Avatar asked Jan 11 '11 15:01

Adam


People also ask

How do I enable Allow_none on XML-RPC?

In your server class, add allow_none=True to your SimpleXMLRPCServer instantiation. The allow_none and encoding parameters are passed on to xmlrpc. client and control the XML-RPC responses that will be returned from the server.

What is XML-RPC client?

XML-RPC is a Remote Procedure Call method that uses XML passed via HTTP(S) as a transport. With it, a client can call methods with parameters on a remote server (the server is named by a URI) and get back structured data.

What port does XML-RPC use?

RPC2 is the conventional file name for an XML-RPC responder. The port number defaults to 80 (the standard http service).

What is XML-RPC request?

XML-RPC requests are a combination of XML content and HTTP headers. The XML content uses the data typing structure to pass parameters and contains additional information identifying which procedure is being called, while the HTTP headers provide a wrapper for passing the request over the Web.


1 Answers

You can do something like this:

from SimpleXMLRPCServer import SimpleXMLRPCServer, SimpleXMLRPCRequestHandler

port = 9999

def func():
    print 'Hi!'
    print x # error!
    print 'Bye!'

class Handler(SimpleXMLRPCRequestHandler):
     def _dispatch(self, method, params):
         try: 
             return self.server.funcs[method](*params)
         except:
             import traceback
             traceback.print_exc()
             raise


if __name__ == '__main__':
    server = SimpleXMLRPCServer(("localhost", port), Handler)
    server.register_function(func)
    print "Listening on port %s..." % port
    server.serve_forever()

Traceback server side:

Listening on port 9999...
Hi!
Traceback (most recent call last):
  File "xml.py", line 13, in _dispatch
    value = self.server.funcs[method](*params)
  File "xml.py", line 7, in func
    print x # error!
NameError: global name 'x' is not defined
localhost - - [11/Jan/2011 17:13:16] "POST /RPC2 HTTP/1.0" 200 
like image 177
mouad Avatar answered Oct 17 '22 02:10

mouad