class CustomResource(Resource):
    isLeaf = True
    def render_POST(self, request):
        self.process_confirm(request)
        return NOT_DONE_YET
    @defer.inlineCallbacks
    def process_confirm(self, request):
        post_data=self.get_data(request)
        print post_data
        try:
            response_body = yield self.process_data(post_data)
        except GetError as e:
            response_body = e.err_text()
            logging.error(response_body)
        print 'respbody', response_body
        response_body = json.dumps(response_body)
        request.write(response_body)
        request.finish()
class Archiv(CustomResource):
    @defer.inlineCallbacks
    def process_data(self, post_data):
        #некая обработка запроса
        defer.returnValue(responce_body)
root = Resource()
archiv=Archiv()
root.putChild('archiv', archiv)
factory = Site(root)
reactor.listenTCP(8880, factory)
reactor.run()

from twisted.web import server, resource
from twisted.internet import reactor
class Simple(resource.Resource):
    isLeaf = True
    def render_POST(self, request):
        return 'Hi i am POST handler for: {}'.format(request.path)
site = server.Site(Simple())
reactor.listenTCP(8001, site)
reactor.run()

# curl -d 'hello' http://127.0.0.1:8001/
Hi i am POST handler for: /
# curl -d 'hello' http://127.0.0.1:8001/foo
Hi i am POST handler for: /foo
# curl -d 'hello' http://127.0.0.1:8001/foo/bar
Hi i am POST handler for: /foo/bar

    
def getChildWithDefault(self, name, request):
        a= checkurl(name, self.pay_r)
        a=True
        if name == '':
            return self
        elif a:
            return self
        return Resource.getChild(self, name, request)