salt/base/circusd/lib.jinja

# circusd_watcher_running() always runs last due to its dependency on
# circusd.reloadconfig. If the service is not running it will be started. If
# the service is already running, but changes were detected via the
# xxx_watcher_requirements state, then the service will be restarted.
#
# circusd_watcher_configuration() keeps the appropriate circusd configuration
# file up to date, and triggers a circusd.reloadconfig if any changes are
# detected. It also generates the xxx_watcher_requiremnts state, which serves
# as a dependency of both circusd.reloadconfig and circusd.watcher_running and
# ensures that all requirements of the service are met before either of those
# commands are executed (circusd.reloadconfig starts new services automatically,
# so all requirements need to be met). The difference is that
# circusd.reloadconfig only needs to be run if the actual circusd configuration
# file changed (hence the require_in), while circusd.watcher_running always
# need to be run (hence the watch_in).
#
# The test.succeed_with_changes state is a convenient way of putting all the
# shared requirements for other states in one place. Because of the use of
# 'onchanges', it will report changes if and only if any of its dependencies
# change.

{% macro circusd_watcher_running() %}
  circusd.watcher_running:
    - endpoint: ipc:///var/lib/circus/endpoint.sock
    - require:
      - module: circusd.reloadconfig
{% endmacro %}

{% macro circusd_watcher_configuration(name, source, context, extra_requires, extra_onchanges) %}
/etc/circus/conf.d/{{ name }}.ini:
  file.managed:
    - source: {{ source }}
{% if context %}
    - template: jinja
    - context: {{ context }}
{% endif %}
    - require:
      - file: /etc/circus/conf.d
    - onchanges_in:
      - module: circusd.reloadconfig

{{ name }}_watcher_requirements:
  test.succeed_with_changes:
    - require:
      - service: circusd
{% for item in extra_requires %}
      - {{ item }}{% endfor %}
    - onchanges:
      - file: /etc/circus/conf.d/{{ name }}.ini
{% for item in extra_onchanges %}
      - {{ item }}{% endfor %}
    - require_in:
      - module: circusd.reloadconfig
    - watch_in:
      - circusd: {{ name }}
{% endmacro %}