WSGI from buildout
Project description
Introduction
‘’collective.recipe.modwsgi’’ is a zc.buildout recipe which creates a paste.deploy entry point for mod_wsgi.
It is very simple to use. This is a minimal ‘’buildout.cfg’’ file which creates a WSGI script mod_python can use:
[buildout]
parts = mywsgiapp
[mywsgiapp]
recipe = collective.recipe.modwsgi
eggs = mywsgiapp
config-file = ${buildout:directory}/production.ini
This will create a small python script in parts/mywsgiapp called ‘’wsgi’’ which mod_wsgi can load. You can also use the optional ‘’extra-paths’’ option to specify extra paths that are added to the python system path.
The apache configuration for this buildout looks like this:
WSGIScriptAlias /mysite /home/me/buildout/parts/mywsgiapp/wsgi
<Directory /home/me/buildout>
Order deny,allow
Allow from all
</Directory>
If the python script must be accessed from somewhere else than the buildout parts folder, you can use the optional ‘’target’’ option to tell the recipe where the script should be created.
For instance, the configuration for the mywsgiapp part could look like this:
[mywsgiapp]
recipe = collective.recipe.modwsgi
eggs = mywsgiapp
target = /var/www/myapp.wsgi
config-file = ${buildout:directory}/production.ini
The recipe would then create the script at /var/www/myapp.wsgi.
Note that the directory containing the target script must already exist on the filesystem prior to running the recipe and be writeable.
The apache configuration for this buildout would then look like this:
WSGIScriptAlias /mysite /var/www/myapp.wsgi
<Directory /var/www>
Order deny,allow
Allow from all
</Directory>
This recipe does not fully install packages, which means that console scripts will not be created. If you need console scripts you can add a second buildout part which uses z3c.recipe.scripts to do a full install.
Configuration files with multiple applications
It is possible to specify multiple applications or pipelines in a single configuration file. If you do this you can specify which application to run by using the app_name option. For example if your ini files looks like this:
[app:my_app]
use = egg:my_application
[pipeline:production]
pipeline = my_app
[pipeline:devel]
pipeline =
egg:WebError#evalerror
my_app
This specifies two way to run the your application: a production configuration which runs the application directly, and a devel configuration which also runs the WebError interactive debugger to catch errors. To use the production pipeline in mod_wsgi supply the app_name parameter:
[mywsgiapp]
recipe = collective.recipe.modwsgi
eggs = mywsgiapp
app_name = production
config-file = ${buildout:directory}/production.ini
Changelog
1.7 - June 19, 2012
Add option to configure where target script will be created. Patch submitted by David Convent.
1.6 - January 31, 2012
Fix packaging error.
1.5 - January 31, 2012
Add option to configure which application to load from a .ini file. Patch submitted by Stephan Hof.
1.4 - January 15, 2012
Fix typo in the .ini handling logic for configuration files that do not contain logging settings. [aclark]
1.3 - January 13, 2012
Gracefully handle .ini files that do not contain logging configuration. [wichert]
don’t overwrite existing file permissions when setting execute permission. This fixes issue 1 [fredj]
1.2 - August 7, 2009
Initialise the python logging module. Based on a patch from Philip Kershaw, which was based on a discussion on pylons-discuss: http://groups.google.com/group/pylons-discuss/browse_thread/thread/9b9add4529b3779c?pli=1 [wichert]
1.1 - April 20, 2009
Add an ‘extra-paths’ option, similar the the zc.recipe.egg one. [chrism]
1.0 - October 16, 2008
No changes. [wichert]
1.0rc1 - June 30, 2008
Update the generated wrapper to test if a path is already in sys.path before adding it. This prevents paths being duplicated in sys.path when mod_wsgi reloads the module. [wichert]
1.0b3 - June 23, 2008
Do not make the recipe a subclass of zc.recipe.egg.Eggs but use a local instance to determine the working set. [wichert]
Format the sys.path changes in the wrapper to make it more human readable. This is purely cosmetic to help with debugging. [wichert]
Also recreate the wsgi wrapper file when updating a buildout part. This is needed to get get changes to versions in the working set (such as different version pins) reflected in the wrapper. [wichert]
1.0b2 - June 13, 2008
Call the Eggs constructor as well: working_set() needs too many of the internal variables it sets for us to set them ourselves. This fixes the recipe breaking when using find-links in buildout. [wichert]
1.0b1 - June 13, 2008
Initial release [wichert]
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