[web2py] Error in scheduler.py when scheduled task uses a jsonrpc webservice

[Lisandro]

I've been several hours trying to figure out what's happening, thinking
that my code had a bug. But I think the problem is in scheduler.py. I
think, not sure.

The simplified scenario is the following. Two web2py apps running on the
same web2py installation.


App "A" defines a public jsonrpc service with a simple "test()" function.
All defined in controller ws.py:

# -*- coding: utf-8 -*-
# appA/controllers/ws.py

from gluon.tools import Service
service = Service()


def call():
session.forget()
return service()


@service.jsonrpc
def test():
return True



App "B" has the function "newsletter()" defined in db.py model, that
consumes the webservice:

# -*- coding: utf-8 -*-
# appB/models/db.py

# ... here, the table definitions, etc

def newsletter():
from gluon.contrib.simplejsonrpc import ServerProxy
ws = ServerProxy(CONFIG.url_webservice)
ws.test()
return True



When I call the "newsletter()" function from inside app B (for example,
from a controller), the function works ok: it connects to the webservice,
calls the webservice function, and returns True.
However, when I schedule the "newsletter()" function as a scheduler task,
it always fails with this traceback:

Traceback (most recent call last):
File "/home/gonguinguen/medios/gluon/scheduler.py", line 315, in
executor result = dumps(_function(*args, **vars))
File "applications/demo/models/db.py", line 837, in newsletter
ws.test()
File "/home/gonguinguen/medios/gluon/contrib/simplejsonrpc.py", line
108, in <lambda> return lambda *args: self.call(attr, *args)
File "/home/gonguinguen/medios/gluon/contrib/simplejsonrpc.py", line
140, in call self.error.get('data', None))
File "/home/gonguinguen/medios/gluon/contrib/simplejsonrpc.py", line
37, in __init__ value = "%s: %s\n%s" % (code, message, '\n'.join(data))
TypeError


One detail that has been really confusing me: if I rename the "test"
function to "get_stats", it works. Don't ask me how. I've done a search in
ALL files of both apps, the "get_stats" function isn't defined anywhere, it
doesn't exists. The scheduled function fails always when calling the
webservice method, except when the method is called "get_stats". Really
confusing. I've found a "get_stats" function defined in
gluon/contrib/memcache.py, but I don't know if it has something to do with
this scenario.

If anyone is seeing something that I don't, please point it out! I'm
pulling my hair off with this :P
--
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