header namespace gets lost with gunicorn/django

[costela]

Hi there,

It seems the following code fails to parse in_header when used with gunicorn or DjangoApplication, but works with wsgiref:

class MyHeader(ComplexModel):
    myinfo = Unicode

class SomeService(ServiceBase):
    __in_header__ = MyHeader

    @rpc(Unicode)
    def MyMethod(ctx, mymethodparam):
        print("I got:", mymethodparam, ctx.in_header)


_app = Application([SomeService],
                   tns='myapp',
                   in_protocol=Soap11(validator='lxml'),
                   out_protocol=Soap11(),
                   )

application = Application([SomeService],
                          tns='myapp',
                          in_protocol=Soap11(validator='lxml'),
                          out_protocol=Soap11())

app = WsgiApplication(application)

if __name__ == '__main__':
    from wsgiref.simple_server import make_server
    server = make_server('0.0.0.0', 8000, app)
    server.serve_forever()

If you start it as a script, it returns:

('I got:', 'somevalue', MyHeader(myinfo='someinfo'))

However, starting the same script with gunicorn spyne_header_test:app (or wrapping it in a DjangoApplication) leads to:

('I got:', u'somevalue', None)

Both tests use this as POST content (found in this old stackoverflow question):

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" 
               xmlns:ns="http://resources.mydomain.com/soap/1.1"
               xmlns:ns0="myapp">
  <soap:Header>
    <ns0:MyHeader>       
      <ns0:myinfo>someinfo</ns0:myinfo>
    </ns0:MyHeader>       
  </soap:Header>
  <soap:Body>
    <ns0:MyMethod>
      <ns0:mymethodparam>somevalue</ns0:mymethodparam>
    </ns0:MyMethod>
  </soap:Body>
</soap:Envelope>

The debug log gives some clues:
Working:

(...)
DEBUG:spyne.interface._base:  enumerating classes for method 'MyMethod'
DEBUG:spyne.interface._base:    adding class "<class 'spyne_header_test.MyHeader'>" for '{myapp}MyHeader'
(...)

Failing:

(...)
DEBUG:spyne.interface._base:  enumerating classes for method 'MyMethod'
DEBUG:spyne.interface._base:    adding class "<class 'spyne_header_test.MyHeader'>" for '{spyne_header_test}MyHeader'
(...)

Giving the derived ComplexModel an explicit __namespace__ attribute solves the issue.

Am I maybe missing something obvious?

PS.: this has been tested on py2 and py3, with the same results. All tests with 2.12.14 and current master.

[plq]

FWIW I dislike greenlet & friends.

looks like the namespace autofill doesn't work. it depends on name which depends on how the code is imported. Probably has to do with greenlet magic.