57 lines
2.8 KiB
ReStructuredText
57 lines
2.8 KiB
ReStructuredText
.. _OpenStack_module_development:
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OpenStack Ansible Modules
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=========================
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The OpenStack collection (on `Galaxy <https://galaxy.ansible.com/openstack/cloud>`_, source code `repository <https://opendev.org/openstack/ansible-collections-openstack.git>`_) contains modules for interacting with OpenStack as either an admin or an end user. If the module does not begin with ``os_``, it is either deprecated or soon to be deprecated. This document serves as developer coding guidelines for modules in this collection.
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.. contents::
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:local:
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Naming
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------
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* All module names should start with ``os_``
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* Name any module that a cloud consumer would expect to use after the logical resource it manages: ``os_server`` not ``os_nova``. This naming convention acknowledges that the end user does not care which service manages the resource - that is a deployment detail. For example cloud consumers may not know whether their floating IPs are managed by Nova or Neutron.
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* Name any module that a cloud admin would expect to use with the service and the resource: ``os_keystone_domain``.
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* If the module is one that a cloud admin and a cloud consumer could both use,
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the cloud consumer rules apply.
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Interface
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---------
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* If the resource being managed has an id, it should be returned.
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* If the resource being managed has an associated object more complex than
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an id, it should also be returned.
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Interoperability
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----------------
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* It should be assumed that the cloud consumer does not know a bazillion
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details about the deployment choices their cloud provider made, and a best
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effort should be made to present one sane interface to the Ansible user
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regardless of deployer insanity.
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* All modules should work appropriately against all existing known public
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OpenStack clouds.
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* It should be assumed that a user may have more than one cloud account that
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they wish to combine as part of a single Ansible-managed infrastructure.
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Libraries
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---------
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* All modules should use ``openstack_full_argument_spec`` to pick up the
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standard input such as auth and ssl support.
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* All modules should include ``extends_documentation_fragment: openstack``.
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* All complex cloud interaction or interoperability code should be housed in
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the `openstacksdk <https://git.openstack.org/cgit/openstack/openstacksdk>`_
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library.
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* All OpenStack API interactions should happen via the openstacksdk and not via
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OpenStack Client libraries. The OpenStack Client libraries do no have end
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users as a primary audience, they are for intra-server communication.
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Testing
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-------
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* Integration testing is currently done in `OpenStack's CI system <https://git.openstack.org/cgit/openstack/openstacksdk/tree/openstack/tests/ansible>`_
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* Testing in openstacksdk produces an obvious chicken-and-egg scenario. Work is under
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way to trigger from and report on PRs directly.
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