Tornado Web Server and Python 3 on Openshift

This git repository helps you get up and run quickly Tornado Web Server on Openshift.

Running on Openshift

Create an account at http://openshift.redhat.com/

Install the RHC client tools if you have not already done so:

 sudo gem install rhc

Create a python-3.3 application

 rhc app create tornadopy3 python-3.3

Add this upstream repo

 cd tornadopy3
 git remote add upstream -m master git://github.com/rancavil/tornado-openshift-quickstart.git
 git pull -s recursive -X theirs upstream master

Then push the repo upstream

 git push

That's it. You can now checkout your application at:

 http://tornadopy3-$youtnamespace.rhcloud.com

The structure of directories created are:

 tornadopy3/
      wsgi.py
      .gitignore
      README.md
      setup.py
      data/
      libs/
      .openshift/
           action_hooks/
           cron/
           markers/
      wsgi/
           application
           openshift.py
           static/
           templates/
                index.html

The main file is openshift.py, this contains the definitions of the handlers. You can change it the name, but you must be sure to change the import statement in application file.

 import tornado.web
 import os

 class MainHandler(tornado.web.RequestHandler):
      def get(self):
           self.render('index.html')

 # Put here yours handlers.

 handlers = [(r'/',MainHandler),]

Openshift uses WSGI to deploy the python applications. In the application file we will define.

 application = tornado.wsgi.WSGIApplication(handlers, **settings)

application will be invoked by app.py to run the application on wsgi. If CherryPy is not installed will be used wsgiref.