[Zope] /temp_folder for ZEO session

[Adam Szpakowski]

Hi,

I'm struggling with seting up ZEO environment. For now I set up a Zope 2.7b2 
working as ZEO client with ZEO server. In zope.conf I have two zobd_db. One 
for mount point "/" and ZEO client and the second one for mount point "/
temp_folder" as TemporaryFolder. With Zope everything works fine. In database 
management i have two bases and in zeo logs connections are logged.

Now I try to set up another connection to the same ZEO server from clean 
python... and get stuck with OFS/Application.py trying to set object 
'session_data' after executing Zope.startup(). 

If I understand correctly the problem lies in a Data.fs. Zope modifies Data.fs 
and remove /temp_folder becouse it is using the second database for it 
(TemporaryFolder).

For a test I create another ZEO server with no database file. ZEO create the 
database with temp_folder in it and the problem do not appear (connection 
from python was succesfull). After that I attached the Zope (as ZEO client) 
to this ZEO server and the problem show up again.

I use quite typical config for ZEO:

<custom_zodb.py>
    import ZServer
    import ZEO.ClientStorage
    Storage=ZEO.ClientStorage.ClientStorage(('localhost',7770),storage='main')

and bind from python to ZODB (through ZEO) using:
    Zope.startup()
    app=Zope.app()

So my question is: How can I create from python a TemporaryStorage for ZEO 
client and specify it's mount point as /temp_folder?

I've searched the net and newsgroups (and Zope code) but there is no clear 
solution for me. I would like to mimic the behaviour of ZConfig for zope.conf 
and it's zodb tags. I suppose that the answer is in Zope code but 
unfortunetly its quite comlicated and after few hours of going through it I 
think that's it is time to call for help ;).

Thank's in advance

-- 
Adam Szpakowski
Silesian University of Technology - Institute of Physics
Department of Optoelectronic
e-mail: worf at optics.polsl.gliwice.pl