Instructions on integrating Merlin extensions into Horizon

Although the repo contains directories meant to be used as Django apps (with templates, static files, urls & views), the whole project is not meant to be run as a standalone Django web-application (with its own settings.py etc). Instead, it should be embedded into running Horizon instance. To do so you should perform the following steps:

1. The easiest way to always use the latest version of Merlin is by using symlinks. Identify the directory where openstack_dashboard and horizon reside. Let's assume this is /usr/lib/python2.7/site-packages and merlin repo is located at /home/user/dev/merlin. Then run the following commands

   # for main Merlin sources
   ln -s /home/user/dev/merlin/merlin /usr/lib/python2.7/site-packages/merlin
   # for files of the Merlin's Mistral extension
   ln -s /home/user/dev/merlin/extensions/mistral /usr/lib/python2.7/site-packages/mistral
   

2. Next thing to do is add panel with Mistral Workbook builder (a Merlin extension) into Horizon. To do it, copy the pluggable config for the Mistral panel:

   cp /home/user/dev/merlin/extensions/enabled/_50_add_mistral_panel.py /usr/lib/python2.7/site-packages/openstack_dashboard/enabled/
   

3. This step is TEMPORARY and will be needed until the real API for listing/ loading/ saving of Mistral workbooks is implemented. You need to add the following setting to the top of /home/user/dev/horizon/openstack_dashboard/local/local_settings.py

   DATABASES = {
       'default': {
           'ENGINE': 'django.db.backends.sqlite3',
           'NAME': 'horizon.sqlite3'
       }
   }
   

   and run /home/user/dev/horizon/manage.py syncdb after that.

4. Restart Horizon web-server. According to the default values in _50_add_mistral_panel.py you would be able to Mistral panel inside the Project dashboard, Orchestration panel group.

How to run Merlin unit-tests locally

1. cd /home/user/dev/merlin
2. npm install

• If npm is not installed yet, run sudo apt-get install npm (let's assume you're using Ubuntu) and sudo apt-get install nodejs-legacy

3. node_modules/.bin/bower install
4. sudo npm install -g grunt-cli
5. grunt test:unit

For more info please refer to https://wiki.openstack.org/wiki/Merlin