472 lines
14 KiB
Python
472 lines
14 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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#
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# Copyright: (c) 2018, F5 Networks 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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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'certified'}
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DOCUMENTATION = r'''
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---
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module: bigip_dns_nameserver
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short_description: Manage LTM DNS nameservers on a BIG-IP
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description:
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- Manages LTM DNS nameservers on a BIG-IP. These nameservers form part of what is
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known as DNS Express on a BIG-IP. This module does not configure GTM related
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functionality, nor does it configure system-level name servers that affect the
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base system's ability to resolve DNS names.
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version_added: 2.8
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options:
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name:
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description:
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- Specifies the name of the nameserver.
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required: True
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address:
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description:
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- Specifies the IP address on which the DNS nameserver (client) or back-end DNS
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authoritative server (DNS Express server) listens for DNS messages.
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- When creating a new nameserver, if this value is not specified, the default
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is C(127.0.0.1).
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service_port:
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description:
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- Specifies the service port on which the DNS nameserver (client) or back-end DNS
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authoritative server (DNS Express server) listens for DNS messages.
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- When creating a new nameserver, if this value is not specified, the default
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is C(53).
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route_domain:
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description:
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- Specifies the local route domain that the DNS nameserver (client) or back-end
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DNS authoritative server (DNS Express server) uses for outbound traffic.
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- When creating a new nameserver, if this value is not specified, the default
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is C(0).
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tsig_key:
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description:
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- Specifies the TSIG key the system uses to communicate with this DNS nameserver
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(client) or back-end DNS authoritative server (DNS Express server) for AXFR zone
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transfers.
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- If the nameserver is a client, then the system uses this TSIG key to verify the
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request and sign the response.
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- If this nameserver is a DNS Express server, then this TSIG key must match the
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TSIG key for the zone on the back-end DNS authoritative server.
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state:
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description:
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- When C(present), ensures that the resource exists.
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- When C(absent), ensures the resource is removed.
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default: present
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choices:
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- present
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- absent
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partition:
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description:
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- Device partition to manage resources on.
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default: Common
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extends_documentation_fragment: f5
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author:
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- Tim Rupp (@caphrim007)
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'''
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EXAMPLES = r'''
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- name: Create a nameserver
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bigip_dns_nameserver:
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name: foo
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address: 10.10.10.10
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service_port: 53
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state: present
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provider:
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password: secret
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server: lb.mydomain.com
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user: admin
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delegate_to: localhost
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'''
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RETURN = r'''
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address:
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description: Address which the nameserver listens for DNS messages.
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returned: changed
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type: string
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sample: 127.0.0.1
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service_port:
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description: Service port on which the nameserver listens for DNS messages.
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returned: changed
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type: int
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sample: 53
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'''
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.basic import env_fallback
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try:
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from library.module_utils.network.f5.bigip import F5RestClient
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from library.module_utils.network.f5.common import F5ModuleError
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from library.module_utils.network.f5.common import AnsibleF5Parameters
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from library.module_utils.network.f5.common import cleanup_tokens
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from library.module_utils.network.f5.common import fq_name
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from library.module_utils.network.f5.common import f5_argument_spec
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from library.module_utils.network.f5.common import exit_json
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from library.module_utils.network.f5.common import fail_json
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from library.module_utils.network.f5.common import transform_name
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except ImportError:
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from ansible.module_utils.network.f5.bigip import F5RestClient
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from ansible.module_utils.network.f5.common import F5ModuleError
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from ansible.module_utils.network.f5.common import AnsibleF5Parameters
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from ansible.module_utils.network.f5.common import cleanup_tokens
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from ansible.module_utils.network.f5.common import fq_name
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from ansible.module_utils.network.f5.common import f5_argument_spec
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from ansible.module_utils.network.f5.common import exit_json
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from ansible.module_utils.network.f5.common import fail_json
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from ansible.module_utils.network.f5.common import transform_name
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class Parameters(AnsibleF5Parameters):
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api_map = {
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'routeDomain': 'route_domain',
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'port': 'service_port',
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'tsigKey': 'tsig_key'
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}
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api_attributes = [
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'address',
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'routeDomain',
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'port',
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'tsigKey'
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]
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returnables = [
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'address',
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'service_port',
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'route_domain',
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'tsig_key',
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]
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updatables = [
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'address',
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'service_port',
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'route_domain',
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'tsig_key',
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]
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class ApiParameters(Parameters):
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pass
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class ModuleParameters(Parameters):
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@property
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def tsig_key(self):
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if self._values['tsig_key'] in [None, '']:
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return self._values['tsig_key']
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return fq_name(self.partition, self._values['tsig_key'])
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@property
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def route_domain(self):
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if self._values['route_domain'] is None:
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return None
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return fq_name(self.partition, self._values['route_domain'])
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@property
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def service_port(self):
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if self._values['service_port'] is None:
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return None
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try:
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return int(self._values['service_port'])
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except ValueError:
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# Reserving the right to add well-known ports
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raise F5ModuleError(
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"The 'service_port' must be in numeric form."
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)
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class Changes(Parameters):
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def to_return(self):
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result = {}
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try:
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for returnable in self.returnables:
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result[returnable] = getattr(self, returnable)
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result = self._filter_params(result)
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except Exception:
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pass
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return result
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class UsableChanges(Changes):
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pass
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class ReportableChanges(Changes):
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pass
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class Difference(object):
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def __init__(self, want, have=None):
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self.want = want
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self.have = have
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def compare(self, param):
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try:
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result = getattr(self, param)
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return result
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except AttributeError:
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return self.__default(param)
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def __default(self, param):
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attr1 = getattr(self.want, param)
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try:
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attr2 = getattr(self.have, param)
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if attr1 != attr2:
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return attr1
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except AttributeError:
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return attr1
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@property
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def tsig_key(self):
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if self.want.tsig_key is None:
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return None
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if self.have.tsig_key is None and self.want.tsig_key == '':
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return None
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if self.want.tsig_key != self.have.tsig_key:
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return self.want.tsig_key
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class ModuleManager(object):
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def __init__(self, *args, **kwargs):
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self.module = kwargs.get('module', None)
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self.client = kwargs.get('client', None)
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self.want = ModuleParameters(params=self.module.params)
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self.have = ApiParameters()
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self.changes = UsableChanges()
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def _set_changed_options(self):
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changed = {}
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for key in Parameters.returnables:
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if getattr(self.want, key) is not None:
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changed[key] = getattr(self.want, key)
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if changed:
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self.changes = UsableChanges(params=changed)
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def _update_changed_options(self):
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diff = Difference(self.want, self.have)
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updatables = Parameters.updatables
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changed = dict()
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for k in updatables:
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change = diff.compare(k)
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if change is None:
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continue
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else:
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if isinstance(change, dict):
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changed.update(change)
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else:
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changed[k] = change
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if changed:
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self.changes = UsableChanges(params=changed)
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return True
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return False
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def should_update(self):
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result = self._update_changed_options()
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if result:
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return True
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return False
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def exec_module(self):
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changed = False
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result = dict()
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state = self.want.state
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if state == "present":
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changed = self.present()
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elif state == "absent":
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changed = self.absent()
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reportable = ReportableChanges(params=self.changes.to_return())
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changes = reportable.to_return()
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result.update(**changes)
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result.update(dict(changed=changed))
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self._announce_deprecations(result)
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return result
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def _announce_deprecations(self, result):
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warnings = result.pop('__warnings', [])
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for warning in warnings:
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self.client.module.deprecate(
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msg=warning['msg'],
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version=warning['version']
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)
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def present(self):
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if self.exists():
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return self.update()
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else:
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return self.create()
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def exists(self):
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uri = "https://{0}:{1}/mgmt/tm/ltm/dns/nameserver/{2}".format(
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self.client.provider['server'],
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self.client.provider['server_port'],
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transform_name(self.want.partition, self.want.name)
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)
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resp = self.client.api.get(uri)
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try:
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response = resp.json()
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except ValueError:
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return False
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if resp.status == 404 or 'code' in response and response['code'] == 404:
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return False
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return True
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def update(self):
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self.have = self.read_current_from_device()
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if not self.should_update():
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return False
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if self.module.check_mode:
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return True
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self.update_on_device()
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return True
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def remove(self):
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if self.module.check_mode:
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return True
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self.remove_from_device()
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if self.exists():
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raise F5ModuleError("Failed to delete the resource.")
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return True
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def create(self):
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if self.want.address is None:
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self.want.update({'address': '127.0.0.1'})
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if self.want.service_port is None:
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self.want.update({'service_port': '53'})
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if self.want.route_domain is None:
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self.want.update({'route_domain': '/Common/0'})
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self._set_changed_options()
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if self.module.check_mode:
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return True
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self.create_on_device()
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return True
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def create_on_device(self):
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params = self.changes.api_params()
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params['name'] = self.want.name
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params['partition'] = self.want.partition
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uri = "https://{0}:{1}/mgmt/tm/ltm/dns/nameserver/".format(
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self.client.provider['server'],
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self.client.provider['server_port']
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)
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resp = self.client.api.post(uri, json=params)
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try:
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response = resp.json()
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except ValueError as ex:
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raise F5ModuleError(str(ex))
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if 'code' in response and response['code'] in [400, 403]:
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if 'message' in response:
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raise F5ModuleError(response['message'])
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else:
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raise F5ModuleError(resp.content)
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def update_on_device(self):
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params = self.changes.api_params()
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uri = "https://{0}:{1}/mgmt/tm/ltm/dns/nameserver/{2}".format(
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self.client.provider['server'],
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self.client.provider['server_port'],
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transform_name(self.want.partition, self.want.name)
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)
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resp = self.client.api.patch(uri, json=params)
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try:
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response = resp.json()
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except ValueError as ex:
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raise F5ModuleError(str(ex))
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if 'code' in response and response['code'] == 400:
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if 'message' in response:
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raise F5ModuleError(response['message'])
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else:
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raise F5ModuleError(resp.content)
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def absent(self):
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if self.exists():
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return self.remove()
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return False
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def remove_from_device(self):
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uri = "https://{0}:{1}/mgmt/tm/ltm/dns/nameserver/{2}".format(
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self.client.provider['server'],
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self.client.provider['server_port'],
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transform_name(self.want.partition, self.want.name)
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)
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response = self.client.api.delete(uri)
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if response.status == 200:
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return True
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raise F5ModuleError(response.content)
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def read_current_from_device(self):
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uri = "https://{0}:{1}/mgmt/tm/ltm/dns/nameserver/{2}".format(
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self.client.provider['server'],
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self.client.provider['server_port'],
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transform_name(self.want.partition, self.want.name)
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)
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resp = self.client.api.get(uri)
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try:
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response = resp.json()
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except ValueError as ex:
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raise F5ModuleError(str(ex))
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if 'code' in response and response['code'] == 400:
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if 'message' in response:
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raise F5ModuleError(response['message'])
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else:
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raise F5ModuleError(resp.content)
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return ApiParameters(params=response)
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class ArgumentSpec(object):
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def __init__(self):
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self.supports_check_mode = True
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argument_spec = dict(
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name=dict(required=True),
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address=dict(),
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service_port=dict(),
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route_domain=dict(),
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tsig_key=dict(),
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state=dict(
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default='present',
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choices=['present', 'absent']
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),
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partition=dict(
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default='Common',
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fallback=(env_fallback, ['F5_PARTITION'])
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)
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)
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self.argument_spec = {}
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self.argument_spec.update(f5_argument_spec)
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self.argument_spec.update(argument_spec)
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def main():
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spec = ArgumentSpec()
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module = AnsibleModule(
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argument_spec=spec.argument_spec,
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supports_check_mode=spec.supports_check_mode,
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)
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client = F5RestClient(**module.params)
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try:
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mm = ModuleManager(module=module, client=client)
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results = mm.exec_module()
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cleanup_tokens(client)
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exit_json(module, results, client)
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except F5ModuleError as ex:
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cleanup_tokens(client)
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fail_json(module, ex, client)
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if __name__ == '__main__':
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main()
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