community.general/lib/ansible
Dag Wieers cd9471ef17 Introduce new 'required_by' argument_spec option (#28662)
* Introduce new "required_by' argument_spec option

This PR introduces a new **required_by** argument_spec option which allows you to say *"if parameter A is set, parameter B and C are required as well"*.

- The difference with **required_if** is that it can only add dependencies if a parameter is set to a specific value, not when it is just defined.
- The difference with **required_together** is that it has a commutative property, so: *"Parameter A and B are required together, if one of them has been defined"*.

As an example, we need this for the complex options that the xml module provides. One of the issues we often see is that users are not using the correct combination of options, and then are surprised that the module does not perform the requested action(s).

This would be solved by adding the correct dependencies, and mutual exclusives. For us this is important to get this shipped together with the new xml module in Ansible v2.4. (This is related to bugfix https://github.com/ansible/ansible/pull/28657)

```python
    module = AnsibleModule(
        argument_spec=dict(
            path=dict(type='path', aliases=['dest', 'file']),
            xmlstring=dict(type='str'),
            xpath=dict(type='str'),
            namespaces=dict(type='dict', default={}),
            state=dict(type='str', default='present', choices=['absent',
'present'], aliases=['ensure']),
            value=dict(type='raw'),
            attribute=dict(type='raw'),
            add_children=dict(type='list'),
            set_children=dict(type='list'),
            count=dict(type='bool', default=False),
            print_match=dict(type='bool', default=False),
            pretty_print=dict(type='bool', default=False),
            content=dict(type='str', choices=['attribute', 'text']),
            input_type=dict(type='str', default='yaml', choices=['xml',
'yaml']),
            backup=dict(type='bool', default=False),
        ),
        supports_check_mode=True,
        required_by=dict(
            add_children=['xpath'],
            attribute=['value', 'xpath'],
            content=['xpath'],
            set_children=['xpath'],
            value=['xpath'],
        ),
        required_if=[
            ['count', True, ['xpath']],
            ['print_match', True, ['xpath']],
        ],
        required_one_of=[
            ['path', 'xmlstring'],
            ['add_children', 'content', 'count', 'pretty_print', 'print_match', 'set_children', 'value'],
        ],
        mutually_exclusive=[
            ['add_children', 'content', 'count', 'print_match','set_children', 'value'],
            ['path', 'xmlstring'],
        ],
    )
```

* Rebase and fix conflict

* Add modules that use required_by functionality

* Update required_by schema

* Fix rebase issue
2019-02-15 10:57:45 +10:00
..
cli Restore behavior for detecting only localhost, and no limit match. Fixes #52152 (#52172) 2019-02-13 11:52:30 -06:00
compat Have update-bundled check for updates to all bundled code 2019-02-06 13:59:55 -08:00
config docs: update docs about pipelining (#51856) 2019-02-12 12:49:00 -05:00
errors Catch sshpass authentication errors and don't retry multiple times to prevent account lockout (#50776) 2019-01-23 11:32:25 -05:00
executor Fix pycodestyle E117 issues. 2019-02-13 23:35:39 -08:00
galaxy Consistent typesetting of "GitHub" (#50929) 2019-01-15 14:53:04 +01:00
inventory make missing pattern ansibleerror (#51397) 2019-01-30 19:13:19 -05:00
module_utils Introduce new 'required_by' argument_spec option (#28662) 2019-02-15 10:57:45 +10:00
modules Introduce new 'required_by' argument_spec option (#28662) 2019-02-15 10:57:45 +10:00
parsing Fix pycodestyle E117 issues. 2019-02-13 23:35:39 -08:00
playbook Become plugins (#50991) 2019-02-11 11:27:44 -06:00
plugins Feature/alphanumeric password in passwordstore (#38121) 2019-02-14 17:02:24 -05:00
template Fix safe_eval on Python 3.8. 2019-02-13 11:54:03 -08:00
utils move extravars and option vars loading into VM (#51070) 2019-01-30 16:25:36 -05:00
vars Remove unused imports and variable in hostvars.py (#51609) 2019-02-07 11:05:39 -05:00
__init__.py
constants.py Become plugins (#50991) 2019-02-11 11:27:44 -06:00
context.py Become plugins (#50991) 2019-02-11 11:27:44 -06:00
release.py Codename: How Many More Times 2018-09-04 12:38:29 -04:00