Changes between Version 2 and Version 3 of TracModWSGI


Ignore:
Timestamp:
07/27/2020 08:15:49 PM (12 days ago)
Author:
trac
Comment:

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  • TracModWSGI

    v2 v3  
    77== The `trac.wsgi` script
    88
    9 Trac can be run on top of mod_wsgi with the help of an application script, which is a Python file saved with a `.wsgi` extension. 
     9Trac can be run on top of mod_wsgi with the help of an application script, which is a Python file saved with a `.wsgi` extension.
    1010
    1111A robust and generic version of this file can be created using the `trac-admin <env> deploy <dir>` command which automatically substitutes the required paths, see TracInstall#cgi-bin. The script should be sufficient for most installations and users not wanting more information can proceed to [#Mappingrequeststothescript configuring Apache].
    1212
    13 If you are using Trac with multiple projects, you can specify their common parent directory using the `TRAC_ENV_PARENT_DIR` in trac.wsgi:
     13If you are using Trac with multiple projects, you can specify their common parent directory in `trac.wsgi`:
    1414{{{#!python
    1515def application(environ, start_request):
    16     # Add this to config when you have multiple projects
    17     environ.setdefault('trac.env_parent_dir', '/usr/share/trac/projects') 
     16    # Add this when you have multiple projects
     17    environ.setdefault('trac.env_parent_dir', '/usr/share/trac/projects')
    1818    ..
    1919}}}
     20
     21Directories residing in `trac.env_parent_dir` that are not environment directories will display an error message on the [TracInterfaceCustomization#ProjectList project index page]. The directories can be excluded by listing them in a `.tracignore` file residing in `trac.env_parent_dir`. Unix [https://docs.python.org/2/library/fnmatch.html shell-style wildcard patterns] can be used in the newline separated list of directories.
    2022
    2123=== A very basic script
     
    4749=== A more elaborate script
    4850
    49 If you are using multiple `.wsgi` files (for example one per Trac environment) you must ''not'' use `os.environ['TRAC_ENV']` to set the path to the Trac environment. Using this method may lead to Trac delivering the content of another Trac environment, as the variable may be filled with the path of a previously viewed Trac environment. 
     51If you are using multiple `.wsgi` files (for example one per Trac environment) you must ''not'' use `os.environ['TRAC_ENV']` to set the path to the Trac environment. Using this method may lead to Trac delivering the content of another Trac environment, as the variable may be filled with the path of a previously viewed Trac environment.
    5052
    5153To solve this problem, use the following `.wsgi` file instead:
     
    5759import trac.web.main
    5860def application(environ, start_response):
    59   environ['trac.env_path'] = '/usr/local/trac/mysite' 
     61  environ['trac.env_path'] = '/usr/local/trac/mysite'
    6062  return trac.web.main.dispatch_request(environ, start_response)
    6163}}}
    6264
    63 For clarity, you should give this file a `.wsgi` extension. You should probably put the file in its own directory, since you will expose it to Apache. 
     65For clarity, you should give this file a `.wsgi` extension. You should probably put the file in its own directory, since you will expose it to Apache.
    6466
    6567If you have installed Trac and Python eggs in a path different from the standard one, you should add that path by adding the following code at the top of the wsgi script:
     
    128130== Configuring Authentication
    129131
    130 The following sections describe different methods for setting up authentication. See also [http://httpd.apache.org/docs/2.4/howto/auth.html Authentication, Authorization and Access Control] in the Apache guide.
     132The following sections describe different methods for setting up authentication. See also [https://httpd.apache.org/docs/2.4/howto/auth.html Authentication, Authorization and Access Control] in the Apache guide.
    131133
    132134=== Using Basic Authentication
     
    206208See also the [https://httpd.apache.org/docs/2.4/mod/mod_auth_basic.html mod_auth_digest] documentation.
    207209
    208 === Using LDAP Authentication 
     210=== Using LDAP Authentication
    209211
    210212Configuration for [https://httpd.apache.org/docs/2.4/mod/mod_ldap.html mod_ldap] authentication in Apache is more involved (httpd 2.2+ and OpenLDAP: slapd 2.3.19).
     
    266268
    267269See also:
    268  - [https://httpd.apache.org/docs/2.4/mod/mod_authnz_ldap.html mod_authnz_ldap], documentation for mod_authnz_ldap.   
     270 - [https://httpd.apache.org/docs/2.4/mod/mod_authnz_ldap.html mod_authnz_ldap], documentation for mod_authnz_ldap.
    269271 - [https://httpd.apache.org/docs/2.4/mod/mod_ldap.html mod_ldap], documentation for mod_ldap, which provides connection pooling and a shared cache.
    270272 - [https://trac-hacks.org/wiki/LdapPlugin TracHacks:LdapPlugin] for storing TracPermissions in LDAP.
     
    272274=== Using SSPI Authentication
    273275
    274 If you are using Apache on Windows, you can use mod_auth_sspi to provide single-sign-on. Download the module from the !SourceForge [http://sourceforge.net/projects/mod-auth-sspi/ mod-auth-sspi project] and then add the following to your !VirtualHost:
     276If you are using Apache on Windows, you can use mod_auth_sspi to provide single-sign-on. Download the module from the !SourceForge [https://sourceforge.net/projects/mod-auth-sspi/ mod-auth-sspi project] and then add the following to your !VirtualHost:
    275277{{{#!apache
    276278<Location /trac/login>
     
    308310
    309311{{{#!python
    310 def application(environ, start_request): 
    311     # Set authenticated username on CA SiteMinder to REMOTE_USER variable 
     312def application(environ, start_request):
     313    # Set authenticated username on CA SiteMinder to REMOTE_USER variable
    312314    # strip() is used to remove any spaces on the end of the string
    313     if 'HTTP_SM_USER' in environ: 
     315    if 'HTTP_SM_USER' in environ:
    314316        environ['REMOTE_USER'] = environ['HTTP_REMOTE_USER'].strip()
    315317    ...
     
    367369Please use either version 1.6, 2.4 or later of `mod_wsgi`. Versions prior to 2.4 in the 2.X branch have problems with some Apache configurations that use WSGI file wrapper extension. This extension is used in Trac to serve up attachments and static media files such as style sheets. If you are affected by this problem, attachments will appear to be empty and formatting of HTML pages will appear not to work due to style sheet files not loading properly. Another frequent symptom is that binary attachment downloads are truncated. See mod_wsgi tickets [https://code.google.com/archive/p/modwsgi/issues/100 #100] and [https://code.google.com/archive/p/modwsgi/issues/132 #132].
    368370
    369 '''Note''': using mod_wsgi 2.5 and Python 2.6.1 gave an Internal Server Error on my system (Apache 2.2.11 and Trac 0.11.2.1). Upgrading to Python 2.6.2 (as suggested [http://www.mail-archive.com/modwsgi@googlegroups.com/msg01917.html here]) solved this for me[[BR]]-- Graham Shanks
     371'''Note''': using mod_wsgi 2.5 and Python 2.6.1 gave an Internal Server Error on my system (Apache 2.2.11 and Trac 0.11.2.1). Upgrading to Python 2.6.2 (as suggested [https://www.mail-archive.com/modwsgi@googlegroups.com/msg01917.html here]) solved this for me[[BR]]-- Graham Shanks
    370372
    371373If you plan to use `mod_wsgi` in embedded mode on Windows or with the MPM worker on Linux, then you will need version 3.4 or greater. See [trac:#10675] for details.
     
    413415//This is not a recommended approach though. See also the notes at the bottom of the [https://code.google.com/archive/p/modwsgi/wikis/IntegrationWithTrac.wiki mod_wsgi's IntegrationWithTrac] wiki page.//
    414416
    415 === Missing Headers and Footers
    416 
    417 If python optimizations are enabled, then headers and footers will not be rendered. An error will be raised in Trac 1.0.11 and later when optimizations are enabled.
    418 
    419 In your WSGI configuration file, the `WSGIPythonOptimize` setting must be set to `0` (`1` or `2` will not work):
    420 
    421 {{{#!apache
    422     WSGIPythonOptimize 0
    423 }}}
    424 
    425 On Ubuntu, the WSGI mod configuration is at `/etc/apache2/mods-enabled/wsgi.conf`.
    426 
    427 The same issue is seen with `PythonOptimize On` in [TracModPython#Pagelayoutissues ModPython].
    428 
    429417=== Other resources
    430418