mirror of
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368 lines
12 KiB
Python
368 lines
12 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2015 CallFire Inc.
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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################################################################################
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# Documentation
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################################################################################
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'}
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DOCUMENTATION = '''
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---
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module: gcdns_zone
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short_description: Creates or removes zones in Google Cloud DNS
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description:
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- Creates or removes managed zones in Google Cloud DNS.
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version_added: "2.2"
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author: "William Albert (@walbert947)"
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requirements:
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- "apache-libcloud >= 0.19.0"
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options:
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state:
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description:
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- Whether the given zone should or should not be present.
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choices: ["present", "absent"]
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default: "present"
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zone:
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description:
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- The DNS domain name of the zone.
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- This is NOT the Google Cloud DNS zone ID (e.g., example-com). If
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you attempt to specify a zone ID, this module will attempt to
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create a TLD and will fail.
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required: true
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aliases: ['name']
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description:
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description:
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- An arbitrary text string to use for the zone description.
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default: ""
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service_account_email:
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description:
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- The e-mail address for a service account with access to Google
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Cloud DNS.
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pem_file:
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description:
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- The path to the PEM file associated with the service account
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email.
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- This option is deprecated and may be removed in a future release.
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Use I(credentials_file) instead.
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credentials_file:
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description:
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- The path to the JSON file associated with the service account
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email.
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project_id:
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description:
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- The Google Cloud Platform project ID to use.
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notes:
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- See also M(gcdns_record).
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- Zones that are newly created must still be set up with a domain registrar
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before they can be used.
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'''
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EXAMPLES = '''
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# Basic zone creation example.
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- name: Create a basic zone with the minimum number of parameters.
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gcdns_zone: zone=example.com
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# Zone removal example.
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- name: Remove a zone.
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gcdns_zone: zone=example.com state=absent
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# Zone creation with description
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- name: Creating a zone with a description
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gcdns_zone: zone=example.com description="This is an awesome zone"
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'''
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RETURN = '''
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description:
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description: The zone's description
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returned: success
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type: string
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sample: This is an awesome zone
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state:
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description: Whether the zone is present or absent
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returned: success
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type: string
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sample: present
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zone:
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description: The zone's DNS name
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returned: success
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type: string
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sample: example.com.
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'''
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################################################################################
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# Imports
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################################################################################
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from distutils.version import LooseVersion
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try:
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from libcloud import __version__ as LIBCLOUD_VERSION
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from libcloud.common.google import InvalidRequestError
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from libcloud.common.google import ResourceExistsError
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from libcloud.common.google import ResourceNotFoundError
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from libcloud.dns.types import Provider
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# The libcloud Google Cloud DNS provider.
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PROVIDER = Provider.GOOGLE
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HAS_LIBCLOUD = True
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except ImportError:
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HAS_LIBCLOUD = False
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PROVIDER = None
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.gcdns import gcdns_connect
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################################################################################
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# Constants
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################################################################################
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# Apache libcloud 0.19.0 was the first to contain the non-beta Google Cloud DNS
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# v1 API. Earlier versions contained the beta v1 API, which has since been
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# deprecated and decommissioned.
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MINIMUM_LIBCLOUD_VERSION = '0.19.0'
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# The URL used to verify ownership of a zone in Google Cloud DNS.
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ZONE_VERIFICATION_URL = 'https://www.google.com/webmasters/verification/'
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################################################################################
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# Functions
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################################################################################
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def create_zone(module, gcdns, zone):
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"""Creates a new Google Cloud DNS zone."""
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description = module.params['description']
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extra = dict(description=description)
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zone_name = module.params['zone']
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# Google Cloud DNS wants the trailing dot on the domain name.
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if zone_name[-1] != '.':
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zone_name = zone_name + '.'
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# If we got a zone back, then the domain exists.
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if zone is not None:
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return False
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# The zone doesn't exist yet.
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try:
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if not module.check_mode:
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gcdns.create_zone(domain=zone_name, extra=extra)
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return True
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except ResourceExistsError:
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# The zone already exists. We checked for this already, so either
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# Google is lying, or someone was a ninja and created the zone
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# within milliseconds of us checking for its existence. In any case,
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# the zone has already been created, so we have nothing more to do.
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return False
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except InvalidRequestError as error:
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if error.code == 'invalid':
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# The zone name or a parameter might be completely invalid. This is
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# typically caused by an illegal DNS name (e.g. foo..com).
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module.fail_json(
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msg="zone name is not a valid DNS name: %s" % zone_name,
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changed=False
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)
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elif error.code == 'managedZoneDnsNameNotAvailable':
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# Google Cloud DNS will refuse to create zones with certain domain
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# names, such as TLDs, ccTLDs, or special domain names such as
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# example.com.
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module.fail_json(
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msg="zone name is reserved or already in use: %s" % zone_name,
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changed=False
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)
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elif error.code == 'verifyManagedZoneDnsNameOwnership':
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# This domain name needs to be verified before Google will create
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# it. This occurs when a user attempts to create a zone which shares
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# a domain name with a zone hosted elsewhere in Google Cloud DNS.
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module.fail_json(
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msg="ownership of zone %s needs to be verified at %s" % (zone_name, ZONE_VERIFICATION_URL),
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changed=False
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)
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else:
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# The error is something else that we don't know how to handle,
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# so we'll just re-raise the exception.
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raise
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def remove_zone(module, gcdns, zone):
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"""Removes an existing Google Cloud DNS zone."""
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# If there's no zone, then we're obviously done.
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if zone is None:
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return False
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# An empty zone will have two resource records:
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# 1. An NS record with a list of authoritative name servers
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# 2. An SOA record
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# If any additional resource records are present, Google Cloud DNS will
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# refuse to remove the zone.
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if len(zone.list_records()) > 2:
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module.fail_json(
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msg="zone is not empty and cannot be removed: %s" % zone.domain,
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changed=False
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)
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try:
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if not module.check_mode:
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gcdns.delete_zone(zone)
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return True
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except ResourceNotFoundError:
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# When we performed our check, the zone existed. It may have been
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# deleted by something else. It's gone, so whatever.
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return False
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except InvalidRequestError as error:
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if error.code == 'containerNotEmpty':
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# When we performed our check, the zone existed and was empty. In
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# the milliseconds between the check and the removal command,
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# records were added to the zone.
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module.fail_json(
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msg="zone is not empty and cannot be removed: %s" % zone.domain,
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changed=False
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)
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else:
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# The error is something else that we don't know how to handle,
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# so we'll just re-raise the exception.
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raise
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def _get_zone(gcdns, zone_name):
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"""Gets the zone object for a given domain name."""
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# To create a zone, we need to supply a zone name. However, to delete a
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# zone, we need to supply a zone ID. Zone ID's are often based on zone
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# names, but that's not guaranteed, so we'll iterate through the list of
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# zones to see if we can find a matching name.
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available_zones = gcdns.iterate_zones()
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found_zone = None
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for zone in available_zones:
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if zone.domain == zone_name:
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found_zone = zone
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break
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return found_zone
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def _sanity_check(module):
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"""Run module sanity checks."""
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zone_name = module.params['zone']
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# Apache libcloud needs to be installed and at least the minimum version.
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if not HAS_LIBCLOUD:
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module.fail_json(
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msg='This module requires Apache libcloud %s or greater' % MINIMUM_LIBCLOUD_VERSION,
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changed=False
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)
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elif LooseVersion(LIBCLOUD_VERSION) < MINIMUM_LIBCLOUD_VERSION:
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module.fail_json(
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msg='This module requires Apache libcloud %s or greater' % MINIMUM_LIBCLOUD_VERSION,
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changed=False
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)
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# Google Cloud DNS does not support the creation of TLDs.
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if '.' not in zone_name or len([label for label in zone_name.split('.') if label]) == 1:
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module.fail_json(
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msg='cannot create top-level domain: %s' % zone_name,
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changed=False
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)
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################################################################################
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# Main
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################################################################################
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def main():
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"""Main function"""
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module = AnsibleModule(
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argument_spec=dict(
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state=dict(default='present', choices=['present', 'absent'], type='str'),
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zone=dict(required=True, aliases=['name'], type='str'),
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description=dict(default='', type='str'),
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service_account_email=dict(type='str'),
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pem_file=dict(type='path'),
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credentials_file=dict(type='path'),
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project_id=dict(type='str')
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),
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supports_check_mode=True
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)
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_sanity_check(module)
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zone_name = module.params['zone']
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state = module.params['state']
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# Google Cloud DNS wants the trailing dot on the domain name.
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if zone_name[-1] != '.':
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zone_name = zone_name + '.'
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json_output = dict(
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state=state,
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zone=zone_name,
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description=module.params['description']
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)
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# Build a connection object that was can use to connect with Google
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# Cloud DNS.
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gcdns = gcdns_connect(module, provider=PROVIDER)
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# We need to check if the zone we're attempting to create already exists.
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zone = _get_zone(gcdns, zone_name)
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diff = dict()
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# Build the 'before' diff
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if zone is None:
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diff['before'] = ''
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diff['before_header'] = '<absent>'
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else:
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diff['before'] = dict(
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zone=zone.domain,
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description=zone.extra['description']
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)
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diff['before_header'] = zone_name
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# Create or remove the zone.
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if state == 'present':
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diff['after'] = dict(
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zone=zone_name,
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description=module.params['description']
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)
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diff['after_header'] = zone_name
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changed = create_zone(module, gcdns, zone)
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elif state == 'absent':
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diff['after'] = ''
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diff['after_header'] = '<absent>'
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changed = remove_zone(module, gcdns, zone)
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module.exit_json(changed=changed, diff=diff, **json_output)
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if __name__ == '__main__':
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main()
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