Greins is tack for Gunicorn.
Greins is a Gunicorn application which makes it easy to configure and manage any number of WSGI apps in one server daemon. It aims to simplify the process of setting up any number of system-wide Gunicorn daemons.
Install from sources:
$ python setup.py install
Install as an rpm:
$ make rpm
Whatever was here before was wrong. There is no place in PyPI for Greins. The most useful aspects of Greins are in the packaging, since it aims to facilitate deployment of Gunicorn and adds no particular functionality itself.
There’s an init script in etc/init aims to be LSB-compliant and packaging for other distributions and systems is an ongoing effort.
Those wishing to deploy Greins for their own infrastructure are encouraged to contribute to the development.
Greins installs one command line script invoked as greins.
Options are the same as for Gunicorn with one exception: the single APP_MODULE argument is replaced by APP_DIR, a directory containing python source files as described in the following section.
Applications should be configured by placing a python source file in the configuration directory. This file should populate a dictionary in the global scope called mounts which maps address prefixes (or ‘mount points’) to WSGI handler functions.
These files are evaluated just like a Gunicorn config file. Server hooks are valid in these configuration files and work as in Gunicorn. Other options, such as logging and worker configuration, are ignored and should be configured globally for the Greins application.
As a convenience, a file name myapp which does not define any mounts will try to import myapp:application and mount it underneath the path /myapp.
It should be possible to write an application for Gunicorn and then place a Gunicorn configuration file inside the configuration directory for Greins to begin using it within Greins immediately, provided that the config file name matches a module in the python path which exports application as a WSGI callable.
The examples directory runs a single greins application from the file test.py which demonstrates loading several routes as well as using the gunicorn server hooks. To run the examples, launch greins from the directory above examples with:
$ greins examples
The greins command accepts gunicorn options. For example:
$ greins -kgevent -b0.0.0.0:8080 examples
Greins is released under the MIT License. See the LICENSE file for more details.
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