|Version 8 (modified by James Crasta <jcrasta@…>, 8 years ago) (diff)|
NOTE: All credit for this code goes to Crast in irc.freenode.net:#django...
This uses SimpleXMLRPCDispatcher which is part of the standard Python lib in 2.4 (And possibly earlier versions).
In discussing ways of handling XML-RPC for Django, I realised I really needed a way to do it without patching Django's code. Crast in #django came up with a great solution, which I have modified and tweaked a bit.
I've included it here. Feel free to fiddle with it and make it your own ... All this code is post-mr
Any crappy & garbage code is completely mine; I'm still learning Python so bear with me. The hacks I added for self-documentation output are just that; any improvements to them would probably be a good thing.
First, setup your urls.py to map an XML-RPC service:
urlpatterns = patterns('', # XML-RPC (r'^xml_rpc_srv/', 'yourproject.yourapp.xmlrpc.rpc_handler'), )
Then, in the appropriate place, create a file called xmlrpc.py
# Patchless XMLRPC Service for Django # Kind of hacky, and stolen from Crast on irc.freenode.net:#django # Self documents as well, so if you call it from outside of an XML-RPC Client # it tells you about itself and its methods # # Brendan W. McAdams <email@example.com> # SimpleXMLRPCDispatcher lets us register xml-rpc calls w/o # running a full XMLRPC Server. It's up to us to dispatch data from SimpleXMLRPCServer import SimpleXMLRPCDispatcher from django.http import HttpResponse # Create a Dispatcher; this handles the calls and translates info to function maps dispatcher = SimpleXMLRPCDispatcher() def rpc_handler(request): """ the actual handler: if you setup your urls.py properly, all calls to the xml-rpc service should be routed through here. If post data is defined, it assumes it's XML-RPC and tries to process as such Empty post assumes you're viewing from a browser and tells you about the service. """ response = HttpResponse() if len(request.POST): response.write(dispatcher._marshaled_dispatch(request.raw_post_data)) else: response.write("<b>This is an XML-RPC Service.</b><br>") response.write("You need to invoke it using an XML-RPC Client!<br>") response.write("The following methods are available:<ul>") methods = dispatcher.system_listMethods() for method in methods: # right now, my version of SimpleXMLRPCDispatcher always # returns "signatures not supported"... :( # but, in an ideal world it will tell users what args are expected sig = dispatcher.system_methodSignature(method) # this just reads your docblock, so fill it in! help = dispatcher.system_methodHelp(method) response.write("<li><b>%s</b>: [%s] %s" % (method, sig, help)) response.write("</ul>") response.write('<a href="http://www.djangoproject.com/"><img src="http://media.djangoproject.com/img/badges/djangomade124x25_grey.gif" border="0" alt="Made with Django." title="Made with Django."></a>') response['Content-length'] = str(len(response.content)) return response def multiply(a, b): """ Multiplication is fun! Takes two arguments, which are multiplied together. Returns the result of the multiplication! """ return a*b # you have to manually register all functions that are xml-rpc-able with the dispatcher # the dispatcher then maps the args down. # The first argument is the actual method, the second is what to call it from the XML-RPC side... dispatcher.register_function(multiply, 'multiply')
You can pretty much write a standard python function in there, just be sure to register it with the dispatcher when you're done.
Here's a quick and dirty client example for testing:
import sys import xmlrpclib rpc_srv = xmlrpclib.ServerProxy("http://localhost:8000/xml_rpc_srv/") result = rpc_srv.multiply( int(sys.argv), int(sys.argv)) print "%d * %d = %d" % (sys.argv, sys.argv, result)
Based on experience, I do recommend that you use Dictionaries for your args rather than long args, but I think that's personal preference (It allows named arguments and eliminates 'out of order' argument issues).
- Brendan W. McAdams