Automagic Galaxy Config generation

play.yml

---
- hosts: localhost
  connection: local
  vars:
    galaxy_config:
      "server:web0":
        host: 0.0.0.0
        port: 8080
      "server:web1":
        host: 0.0.0.0
        port: 8081
      "app:main":
        "database_connection": "postgresql:///galaxy"
  tasks:
    - name: Generate INI
      template: src=universe_wsgi.ini.j2 dest=universe_wsgi.ini

universe_wsgi.ini.j2

#- define galaxy_config if it doesn't exist, for later ease of use -#}
{%- if galaxy_config is not defined or galaxy_config == None -%}
{%- set galaxy_config = {} %}
{% endif %}

{% for server in galaxy_config if server.startswith('server:') %}

{#- server: must contain use, set it if unset -#}
{#- default to enabling the threadpool, but this can be overridden -#}
[{{ server }}]
{{ "use = egg:Paste#http" if galaxy_config[server]['use'] is not defined else "" }}
{{ "use_threadpool = True" if galaxy_config[server]['use_threadpool'] is not defined else "" }}
{% for opt in galaxy_config[server] %}
{{ opt }} = {{ galaxy_config[server][opt] }}
{% endfor %}

{% else %}

[server:main]
use = egg:Paste#http
use_threadpool = True

{% endfor %}

{#- add any other defined sections (e.g. [uwsgi]). -#}
{% for section in galaxy_config if not section.startswith('server:') and not section == 'app:main' %}
[{{ section }}]
{% for opt in galaxy_config[section] %}
{{ opt }} = {{ galaxy_config[section][opt] }}
{% endfor %}
{% endfor %}

{#- app:main must exist and must contain paste.app_factory, but everything else is optional. -#}
[app:main]
{% if 'app:main' in galaxy_config %}
{{ "paste.app_factory = galaxy.web.buildapp:app_factory" if galaxy_config['app:main']['paste.app_factory'] is not defined else "" }}
{% for opt in galaxy_config['app:main'] %}
{{ opt }} = {{ galaxy_config['app:main'][opt] }}
{% endfor %}
{% else %}
paste.app_factory = galaxy.web.buildapp:app_factory
{% endif %}