Version 4 (modified by 9 years ago) ( diff ) | ,
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Alternative frontends for development
Alternative frontend: mod_python
Virtualenv can be used with Apache and mod_python, but as mod_python will be a system install, it will not be aware of the virtualenv without some configuration. For development this is useful as one Apache server can serve various development versions in a more permanent way. This method will use the system Python, but will add the libraries from the virtualenv.
- Make a new frontend script that for instance can be stored in the virtualenv
bin
directory:#myvirtualtrac.py import os import site site.addsitedir('/path/to/my/virtualenv/lib/python2.4/site-packages') from trac.web.modpython_frontend import handler
- Update Apache config to use this script. Add or update options according to the default mod_python setup like for instance found in TracModPython:
# Extend the path so Apache will find your script on path PythonPath "['/path/to/my/virtualenv/bin'] + sys.path" # Make mod_python use new frontend instead of trac.web.modpython_frontend PythonHandler myvirtualtrac
Alternative frontend: mod_wsgi
With Apache, mod_wsgi is a very good alternative to mod_python. Setting this up follows the same pattern, but for development especially there is one major advantage: it can quite easily be set up to auto-reload on code changes.
- Update a default TracModWsgi setup to make a daemonised process, and as of mod_wsgi 2.0 (this setup depends on ≥ 2.0) there is built-in support for custom paths and similar. Example of a full
VirtualHost
configuration:<VirtualHost *:80> ServerName virtualtrac.local # Update user and group to be whatever on your system is intended to run the deamon # Update the paths to point to virtualenv site-packages (for trac+++) and bin (for script) WSGIDaemonProcess virtualtrac user=www group=www threads=25 python-path=/path/to/my/virtualenv/lib/python2.4/site-packages:/path/to/my/virtualenv/bin WSGIScriptAlias / /path/to/my/virtualenv/bin/virtualtrac.wsgi <Location /> WSGIReloadMechanism Process WSGIProcessGroup virtualtrac # GLOBAL should generally be used instead of SERVER, see http://code.google.com/p/modwsgi/wiki/IntegrationWithTrac WSGIApplicationGroup %{GLOBAL} Order deny,allow Allow from all </Location> # Authentication <LocationMatch (/[^/.]+/login)> # Note: Change settings with regards to auth method, paths and domain AuthType Digest AuthName "virtualtrac" AuthDigestDomain /trac http://virtualtrac.local AuthDigestProvider file AuthUserFile /path/to/access.htdigest Require valid-user </LocationMatch> </VirtualHost>
- Go to ReloadingSourceCode and save the Python script as
/path/to/my/virtualenv/bin/monitor.py
- A basic WSGI frontend script, save as
/path/to/my/virtualenv/bin/virtualtrac.wsgi
:import sys sys.stdout = sys.stderr import os os.environ['TRAC_ENV_DIR'] = '/path/to/trac/project' # or, alternatively for multiple projects #os.environ['TRAC_ENV_PARENT_DIR'] = "/parent/path/to/many/projects" os.environ['PYTHON_EGG_CACHE'] = '/path/to/a/temp/to/cache/eggs' import trac.web.main import monitor monitor.start(interval=1.0) # Additionally monitor easy-install.pth to restart whenever installs are done monitor.track('/path/to/my/virtualenv/lib/python2.4/site-packages/easy-install.pth') application = trac.web.main.dispatch_request