ladon-dev-team team mailing list archive

[Mads Find Madsen <question241425@xxxxxxxxxxxxxxxxxxxxx>]

New question #241425 on ladon:
https://answers.launchpad.net/ladon/+question/241425

I have been serving up my web services using apache (and ladon-ctl) up till now, and have had no problems.
Since I want to provide another interface for the same library of functions, implemented in pyramid, I wanted to move to make a wsgi app out of my ladonized functions and serve it together with the rest of the pyramid application using waitress.
This works, but changes the behaviour of ladon in a way that is not entirely intuitive to me:

My web services look something like this:
from ladon.ladonizer import ladonize
from ladon.types.ladontype import LadonType

class Result(LadonType):
        name = {
                'type': str
        }
        value = {
                'type': str
        }
	unit = {
		'type': str
	}



class DummyServices(object):
	
	@ladonize(int,rtype=Result)
	def dummyres(self,uid):
		r = Result()
		r.name= str('test')
		r.value = str(1.23)
		r.unit = str('m/s')
		return r


serving it up with:
ladon-ctl testserve dummyservices.py -p 6544
works just fine.

Now I want to include it in my pyramid application, so I modified my __init__.py file to look something like this:

from pyramid.config import Configurator
from sqlalchemy import engine_from_config
from os.path import abspath,dirname
from pyramid.wsgi import wsgiapp
from ladon.server.wsgi import LadonWSGIApplication

def main(global_config, **settings):
    """ This function returns a Pyramid WSGI application.
    """
    application = LadonWSGIApplication(
        ['dummyservices'],
        [dirname(abspath(__file__))],
        catalog_name='My Ladon webservice catalog',
        catalog_desc='This is the root of my cool webservice catalog')
    ladonService = wsgiapp(application)

    config = Configurator(settings=settings)
    config.include('pyramid_chameleon')
    config.add_view(ladonService,name='dummyservices')
    config.scan()
    return config.make_wsgi_app()

and serve it up with pserve.

Suddenly there are two duplicate, identical instances of the Result type - but only in the overview page and the soap WSDLs; e.g.:
<wsdl:definitions name="DummyServices" targetNamespace="urn:DummyServices"><wsdl:types><xsd:schema targetNamespace="urn:DummyServices"><xsd:import namespace="http://schemas.xmlsoap.org/soap/encoding/"/><xsd:complexType name="Result"><xsd:sequence><xsd:element maxOccurs="1" minOccurs="1" name="name" type="xsd:string"/><xsd:element maxOccurs="1" minOccurs="1" name="unit" type="xsd:string"/><xsd:element maxOccurs="1" minOccurs="1" name="value" type="xsd:string"/></xsd:sequence></xsd:complexType><xsd:complexType name="Result"><xsd:sequence><xsd:element maxOccurs="1" minOccurs="1" name="name" type="xsd:string"/><xsd:element maxOccurs="1" minOccurs="1" name="unit" type="xsd:string"/><xsd:element maxOccurs="1" minOccurs="1" name="value" type="xsd:string"/></xsd:sequence></xsd:complexType></xsd:schema>
...
This doesn't play well with the c# application that I want to act as the client, unfortunately (suds just ignores the duplicate definition).

Interestingly in the JSON-WSP description, there is only one reference to the Result type.

{"version": "1.1", "url": "http://localhost:6543/dummyservices/jsonwsp";, "servicename": "DummyServices", "type": "jsonwsp/description", "types": {"Result": {"value": {"type": "string"}, "name": {"type": "string"}, "unit": {"type": "string"}}}, "methods": {"dummyres": {"ret_info": {"doc_lines": [], "type": "Result"}, "doc_lines": [], "params": {"uid": {"def_order": 1, "doc_lines": [], "type": "number", "optional": false}}}}}

 I am still fairly new to python, and I am sure I am doing something wrong in the way I am creating the wsgi app, but I am at a loss as to what. Any help would be very much appreciated!

-- 
You received this question notification because you are a member of
Ladon Developer, which is an answer contact for ladon.