mounting mod_python powered apps to arbitrary paths

[qvx]

I followed instructions from
http://trac.turbogears.org/turbogears/wiki/ModPythonIntegration09 and
somehow managed to start my app behind apache. Basically, I deployed my
app with "setup.py develop", downloaded modpython_gateway, created
startup script ccleads_modpython.py and modified httpd.conf.

The thing is that my app is accessible at the root of my webserver and
I would like to mount it to some other location. I'm currently
accessing my app as:

http://ozdev/

and would like to change it to:

http://ozdev/ccleads/

so I can later deploy other applications:

http://ozdev/app2/
http://ozdev/app3/

but mostly because there are other things already running on this
server.

This is my httpd.conf:

<VirtualHost *:80>
ServerName localhost
ServerAdmin webmaster@ozdev
ServerSignature Off
AddDefaultCharset utf-8

<Location />
SetHandler python-program
PythonHandler modpython_gateway::handler
PythonOption wsgi.application cherrypy._cpwsgi::wsgiApp
PythonFixupHandler ccleads.ccleads_modpython
PythonDebug on
</Location>

Alias /static "D:/OZ/Projects/ccleads/ccleads/static"
Alias /favicon.ico
"D:/OZ/Projects/ccleads/ccleads/static/images/favicon.ico"
<Location /static>
SetHandler None
</Location>

<Directory "D:/OZ/Projects/ccleads/ccleads/static">
AllowOverride None
Options -ExecCGI -Indexes -Multiviews +FollowSymLinks
Order allow,deny
allow from all
</Directory>
</VirtualHost>

Oh yes, it is an intranet app running on XP box so I have free hands to
do whatever is necessary.

Thanks,
Tvrtko

[fumanchu]

And what does ccleads.ccleads_modpython do? If you want it to mount
your app at an arbitrary path, it should say something like:

cploaded = False
def fixuphandler(req):
global cploaded
if not cploaded:
cherrypy.tree.mount(Root(), "/ccleads")
cherrypy.server.start(init_only=True, server_class=None)
cploaded = True

...and you should then change your VirtualHost's Location element to
/ccleads as well (instead of "/").

Robert Brewer
System Architect
Amor Ministries
fuma...@amor.org

[qvx]

It does this:
-----
import pkg_resources
pkg_resources.require("TurboGears")
import cherrypy
import turbogears
turbogears.update_config(
configfile = r"D:\OZ\Projects\ccleads\dev_apache.cfg",
modulename = "ccleads.config.app")
from ccleads.controllers import Root
cherrypy.root = Root()
cherrypy.server.start(initOnly=True, serverClass=None)
def fixuphandler(req):
return 0
------

I'll certanly try this. Gotta go out and walk a little.

Tvrtko

[qvx]

I ended up with this:
------------

import pkg_resources
pkg_resources.require("TurboGears")

import cherrypy
import turbogears

turbogears.update_config(
configfile = r"D:\OZ\Projects\ccleads\dev_apache.cfg",
modulename = "ccleads.config.app")

from ccleads.controllers import Root

#cherrypy.root = Root()
cherrypy.tree.mount(Root(), turbogears.config.get('server.mount_point',
None))
cherrypy.server.start(initOnly=True, serverClass=None)

def fixuphandler(req):
return 0
------------

I have server.mount_point="/ccleads" inside my dev.cfg config file.

Now I have the following issues:

1. All my links inside web files (kid, js, css) have to take this new
mount point into account. This is not hard to do for kid files. I have
to use tg.url(). Certanly I loose some of the cimplicity and ease of
design (Dreamweaver can nicely show images when you use
/static/images/img.gif syntax, but not when you use tg.url()) but I'm
still able to make it work. Bigger problem is with JS and CSS files
where I can't use tg.url().

Currently the site looks just nice (styled) but only because there is
/static directory served by Apache directly from my ccleads/static
folder. This makes me wonder how to separate static content from
multiple sites and not just controllers? I think I know kow to make
apache Alias but I'm not sure how to design my CSS and JS files.

My next issues are with Identity:

2. I had to comment out all identity code from my templates because of
this:

File "d:\oz\projects\ccleads\ccleads\templates\master.py", line 147,
in _match_func
yield (START, current)
File
"c:\python24\lib\site-packages\TurboGears-0.9a2-py2.4.egg\turbogears\identity\__init__.py",
line 50, in __getattr__
identity= self.identity()
File
"c:\python24\lib\site-packages\TurboGears-0.9a2-py2.4.egg\turbogears\identity\__init__.py",
line 43, in identity
raise IdentityManagementNotEnabledException()
IdentityManagementNotEnabledException: An attempt was made to use a
facility of the TurboGears Identity Management framework but identity
management hasn't been enabled in the config file [via identity.on].

As you can guess, this works if I mount my app to server root.

I also had to comment out all @identity.require decorators because of
the same issue, only this time without a traceback but with "login"
page which says (An attempt was made to use a facility of the
TurboGears Identity Management framework but identity management hasn't
been enabled in the config file [via identity.on].) This message comes
from cherrypy.request.identity_errors which I display on login page.

3. I had to change app.cfg configuration and say:

identity.failure_url="/ccleads/login"

to make login page appear. Now, app.cfg should not be modified during
deployment so it is my guess that Identity doesn't do a right thing
with this key. I tried to change the line which uses that url:

identity/exceptions.py:
- cherrypy.InternalRedirect.__init__(self, url)
+ cherrypy.InternalRedirect.__init__(self, turbogears.url(url))

but it didn't help. I guess it has to do with InternalRedirect (usually
I use HTTPRedirect which works).

Tvrtko Sokolovski

[Kevin Dangoor]

Have you set server.webpath to point to the root of your site? You
should do that, that way turbogears.url generates the correct URLs.
This should also fixup the incoming URLs.

Kevin

--
Kevin Dangoor
TurboGears / Zesty News

email: k...@blazingthings.com
company: http://www.BlazingThings.com
blog: http://www.BlueSkyOnMars.com