This is a clone and continuation of https://github.com/dizz/nova - it provides a python egg which can be easily deployed in OpenStack and will thereby add the 3rd party OCCI interface to OpenStack.

1. Install this egg: python setup.py install (later maybe pip install occi-os)
2. Configure OpenStack - Add application to api-paste.ini of nova and enable the API

Make sure an application is configured in api-paste.ini (name can be picked yourself):

########
# OCCI #
########

[composite:occiapi]
use = egg:Paste#urlmap
/: occiapppipe

[pipeline:occiapppipe]
pipeline = authtoken keystonecontext occiapp
# with request body size limiting and rate limiting
# pipeline = sizelimit authtoken keystonecontext ratelimit occiapp

[app:occiapp]
use = egg:openstackocci#occi_app

Make sure the API (name from above) is enabled in nova.conf:

[...]
enabled_apis=ec2,occiapi,osapi_compute,osapi_volume,metadata
[...]

You can set the port option via the nova.conf configuration file:

[...]
occiapi_listen_port=9999
[...]