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# OpenStack Ansible Modules

These are a set of modules for interacting with OpenStack as either an admin or an end user. If the module does not begin with `os_`, it’s either deprecated or soon to be. This document serves as developer coding guidelines for modules intended to be here.

- Naming
- Interface
- Interoperability
- Libraries
- Testing

## Naming

- All module names should start with `os_`
- 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.
- Name any module that a cloud admin would expect to use with the service and the resource: `os_keystone_domain`.
- If the module is one that a cloud admin and a cloud consumer could both use, the cloud consumer rules apply.

## Interface

- If the resource being managed has an id, it should be returned.
- If the resource being managed has an associated object more complex than an id, it should also be returned.

## Interoperability

- It should be assumed that the cloud consumer does not know a bazillion details about the deployment choices their cloud provider made, and a best effort should be made to present one sane interface to the Ansible user regardless of deployer insanity.
- All modules should work appropriately against all existing known public OpenStack clouds.
- It should be assumed that a user may have more than one cloud account that they wish to combine as part of a single Ansible-managed infrastructure.

## Libraries

- All modules should use `openstack_full_argument_spec` to pick up the standard input such as auth and ssl support.
- All modules should include `extends_documentation_fragment: openstack`.
- All complex cloud interaction or interoperability code should be housed in the openstacksdk library.
- All OpenStack API interactions should happen via the openstacksdk and not via OpenStack Client libraries. The OpenStack Client libraries do no have end users as a primary audience, they are for intra-server communication.

## Testing

- Integration testing is currently done in OpenStack’s CI system
- Testing in openstacksdk produces an obvious chicken-and-egg scenario. Work is under way to trigger from and report on PRs directly.