New Memset module to manage DNS zone domains (ansible#40391)

lib/ansible/modules/cloud/memset/memset_zone_domain.py

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+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+#
+# Copyright (c) 2018, Simon Weald <[email protected]>
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+ANSIBLE_METADATA = {
+    'metadata_version': '1.1',
+    'status': ['preview'],
+    'supported_by': 'community'
+}
+
+DOCUMENTATION = '''
+---
+module: memset_zone_domain
+author: "Simon Weald (@analbeard)"
+version_added: "2.6"
+short_description: Create and delete domains in Memset DNS zones.
+notes:
+  - Zone domains can be thought of as a collection of domains, all of which share the
+    same DNS records (i.e. they point to the same IP). An API key generated via the
+    Memset customer control panel is needed with the following minimum scope -
+    I(dns.zone_domain_create), I(dns.zone_domain_delete), I(dns.zone_domain_list).
+  - Currently this module can only create one domain at a time. Multiple domains should
+    be created using C(with_items).
+description:
+    - Manage DNS zone domains in a Memset account.
+options:
+    state:
+        default: present
+        description:
+            - Indicates desired state of resource.
+        choices: [ absent, present ]
+    api_key:
+        required: true
+        description:
+            - The API key obtained from the Memset control panel.
+    domain:
+        required: true
+        description:
+            - The zone domain name. Ensure this value has at most 250 characters.
+        aliases: ['name']
+    zone:
+        required: true
+        description:
+            - The zone to add the domain to (this must already exist).
+'''
+
+EXAMPLES = '''
+# Create the zone domain 'test.com'
+- name: create zone domain
+  memset_zone_domain:
+    domain: test.com
+    zone: testzone
+    state: present
+    api_key: 5eb86c9196ab03919abcf03857163741
+  delegate_to: localhost
+'''
+
+RETURN = '''
+memset_api:
+  description: Domain info from the Memset API
+  returned: when changed or state == present
+  type: complex
+  contains:
+    domain:
+      description: Domain name
+      returned: always
+      type: string
+      sample: "example.com"
+    id:
+      description: Domain ID
+      returned: always
+      type: string
+      sample: "b0bb1ce851aeea6feeb2dc32fe83bf9c"
+'''
+
+from ansible.module_utils.basic import AnsibleModule
+from ansible.module_utils.memset import get_zone_id
+from ansible.module_utils.memset import check_zone_domain
+from ansible.module_utils.memset import memset_api_call
+
+
+def api_validation(args=None):
+    '''
+    Perform some validation which will be enforced by Memset's API (see:
+    https://www.memset.com/apidocs/methods_dns.html#dns.zone_domain_create)
+    '''
+    # zone domain length must be less than 250 chars
+    if len(args['domain']) > 250:
+        stderr = 'Zone domain must be less than 250 characters in length.'
+        module.fail_json(failed=True, msg=stderr)
+
+
+def check(args=None):
+    '''
+    Support for running with check mode.
+    '''
+    retvals = dict()
+    has_changed = False
+
+    api_method = 'dns.zone_domain_list'
+    has_failed, msg, response = memset_api_call(api_key=args['api_key'], api_method=api_method)
+
+    domain_exists = check_zone_domain(data=response, domain=args['domain'])
+
+    # set changed to true if the operation would cause a change.
+    has_changed = ((domain_exists and args['state'] == 'absent') or (not domain_exists and args['state'] == 'present'))
+
+    retvals['changed'] = has_changed
+    retvals['failed'] = has_failed
+
+    return(retvals)
+
+
+def create_zone_domain(args=None, zone_exists=None, zone_id=None, payload=None):
+    '''
+    At this point we already know whether the containing zone exists,
+    so we just need to create the domain (or exit if it already exists).
+    '''
+    has_changed, has_failed = False, False
+    msg = None
+
+    api_method = 'dns.zone_domain_list'
+    _has_failed, _msg, response = memset_api_call(api_key=args['api_key'], api_method=api_method)
+
+    for zone_domain in response.json():
+        if zone_domain['domain'] == args['domain']:
+            # zone domain already exists, nothing to change.
+            has_changed = False
+            break
+    else:
+        # we need to create the domain
+        api_method = 'dns.zone_domain_create'
+        payload['domain'] = args['domain']
+        payload['zone_id'] = zone_id
+        has_failed, msg, response = memset_api_call(api_key=args['api_key'], api_method=api_method, payload=payload)
+        if not has_failed:
+            has_changed = True
+
+    return(has_failed, has_changed, msg)
+
+
+def delete_zone_domain(args=None, payload=None):
+    '''
+    Deletion is pretty simple, domains are always unique so we
+    we don't need to do any sanity checking to avoid deleting the
+    wrong thing.
+    '''
+    has_changed, has_failed = False, False
+    msg, memset_api = None, None
+
+    api_method = 'dns.zone_domain_list'
+    _has_failed, _msg, response = memset_api_call(api_key=args['api_key'], api_method=api_method)
+
+    domain_exists = check_zone_domain(data=response, domain=args['domain'])
+
+    if domain_exists:
+        api_method = 'dns.zone_domain_delete'
+        payload['domain'] = args['domain']
+        has_failed, msg, response = memset_api_call(api_key=args['api_key'], api_method=api_method, payload=payload)
+        if not has_failed:
+            has_changed = True
+            memset_api = response.json()
+            # unset msg as we don't want to return unecessary info to the user.
+            msg = None
+
+    return(has_failed, has_changed, memset_api, msg)
+
+
+def create_or_delete_domain(args=None):
+    '''
+    We need to perform some initial sanity checking and also look
+    up required info before handing it off to create or delete.
+    '''
+    retvals, payload = dict(), dict()
+    has_changed, has_failed = False, False
+    msg, stderr, memset_api = None, None, None
+
+    # get the zones and check if the relevant zone exists.
+    api_method = 'dns.zone_list'
+    has_failed, msg, response = memset_api_call(api_key=args['api_key'], api_method=api_method)
+
+    if has_failed:
+        # this is the first time the API is called; incorrect credentials will
+        # manifest themselves at this point so we need to ensure the user is
+        # informed of the reason.
+        retvals['failed'] = has_failed
+        retvals['msg'] = msg
+        retvals['stderr'] = "API returned an error: {0}" . format(response.status_code)
+        return(retvals)
+
+    zone_exists, msg, counter, zone_id = get_zone_id(zone_name=args['zone'], current_zones=response.json())
+
+    if not zone_exists:
+        # the zone needs to be unique - this isn't a requirement of Memset's API but it
+        # makes sense in the context of this module.
+        has_failed = True
+        if counter == 0:
+            stderr = "DNS zone '{0}' does not exist, cannot create domain." . format(args['zone'])
+        elif counter > 1:
+            stderr = "{0} matches multiple zones, cannot create domain." . format(args['zone'])
+
+        retvals['failed'] = has_failed
+        retvals['msg'] = stderr
+        return(retvals)
+
+    if args['state'] == 'present':
+        has_failed, has_changed, msg = create_zone_domain(args=args, zone_exists=zone_exists, zone_id=zone_id, payload=payload)
+
+    if args['state'] == 'absent':
+        has_failed, has_changed, memset_api, msg = delete_zone_domain(args=args, payload=payload)
+
+    retvals['changed'] = has_changed
+    retvals['failed'] = has_failed
+    for val in ['msg', 'stderr', 'memset_api']:
+        if val is not None:
+            retvals[val] = eval(val)
+
+    return(retvals)
+
+
+def main():
+    global module
+    module = AnsibleModule(
+        argument_spec=dict(
+            state=dict(default='present', choices=['present', 'absent'], type='str'),
+            api_key=dict(required=True, type='str', no_log=True),
+            domain=dict(required=True, aliases=['name'], type='str'),
+            zone=dict(required=True, type='str')
+        ),
+        supports_check_mode=True
+    )
+
+    # populate the dict with the user-provided vars.
+    args = dict()
+    for key, arg in module.params.items():
+        args[key] = arg
+    args['check_mode'] = module.check_mode
+
+    # validate some API-specific limitations.
+    api_validation(args=args)
+
+    if module.check_mode:
+        retvals = check(args)
+    else:
+        retvals = create_or_delete_domain(args)
+
+    # we would need to populate the return values with the API's response
+    # in several places so it's easier to do it at the end instead.
+    if not retvals['failed']:
+        if args['state'] == 'present' and not module.check_mode:
+            payload = dict()
+            payload['domain'] = args['domain']
+            api_method = 'dns.zone_domain_info'
+            _has_failed, _msg, response = memset_api_call(api_key=args['api_key'], api_method=api_method, payload=payload)
+            retvals['memset_api'] = response.json()
+
+    if retvals['failed']:
+        module.fail_json(**retvals)
+    else:
+        module.exit_json(**retvals)
+
+
+if __name__ == '__main__':
+    main()

test/integration/targets/memset_zone_domain/aliases

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+unsupported

test/integration/targets/memset_zone_domain/meta/main.yml

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+---