#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# Copyright: (c) 2017, F5 Networks Inc.
# 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': ['stableinterface'],
'supported_by': 'certified'}
DOCUMENTATION = r'''
---
module: bigip_device_dns
short_description: Manage BIG-IP device DNS settings
description:
- Manage BIG-IP device DNS settings.
version_added: 2.2
options:
cache:
description:
- Specifies whether the system caches DNS lookups or performs the
operation each time a lookup is needed. Please note that this applies
only to Access Policy Manager features, such as ACLs, web application
rewrites, and authentication.
type: str
choices:
- enabled
- disabled
- enable
- disable
name_servers:
description:
- A list of name servers that the system uses to validate DNS lookups
type: list
search:
description:
- A list of domains that the system searches for local domain lookups,
to resolve local host names.
type: list
ip_version:
description:
- Specifies whether the DNS specifies IP addresses using IPv4 or IPv6.
type: int
choices:
- 4
- 6
state:
description:
- The state of the variable on the system. When C(present), guarantees
that an existing variable is set to C(value).
type: str
choices:
- absent
- present
default: present
extends_documentation_fragment: f5
author:
- Tim Rupp (@caphrim007)
- Wojciech Wypior (@wojtek0806)
'''
EXAMPLES = r'''
- name: Set the DNS settings on the BIG-IP
bigip_device_dns:
name_servers:
- 208.67.222.222
- 208.67.220.220
search:
- localdomain
- lab.local
provider:
password: secret
server: lb.mydomain.com
user: admin
delegate_to: localhost
'''
RETURN = r'''
cache:
description: The new value of the DNS caching
returned: changed
type: str
sample: enabled
name_servers:
description: List of name servers that were set
returned: changed
type: list
sample: ['192.0.2.10', '172.17.12.10']
search:
description: List of search domains that were set
returned: changed
type: list
sample: ['192.0.2.10', '172.17.12.10']
ip_version:
description: IP version that was set that DNS will specify IP addresses in
returned: changed
type: int
sample: 4
warnings:
description: The list of warnings (if any) generated by module based on arguments
returned: always
type: list
sample: ['...', '...']
'''
from ansible.module_utils.basic import AnsibleModule
try:
from library.module_utils.network.f5.bigip import F5RestClient
from library.module_utils.network.f5.common import F5ModuleError
from library.module_utils.network.f5.common import AnsibleF5Parameters
from library.module_utils.network.f5.common import fq_name
from library.module_utils.network.f5.common import f5_argument_spec
from library.module_utils.network.f5.common import is_empty_list
except ImportError:
from ansible.module_utils.network.f5.bigip import F5RestClient
from ansible.module_utils.network.f5.common import F5ModuleError
from ansible.module_utils.network.f5.common import AnsibleF5Parameters
from ansible.module_utils.network.f5.common import fq_name
from ansible.module_utils.network.f5.common import f5_argument_spec
from ansible.module_utils.network.f5.common import is_empty_list
class Parameters(AnsibleF5Parameters):
api_map = {
'dns.cache': 'cache',
'nameServers': 'name_servers',
'include': 'ip_version',
}
api_attributes = [
'nameServers', 'search', 'include',
]
updatables = [
'cache', 'name_servers', 'search', 'ip_version',
]
returnables = [
'cache', 'name_servers', 'search', 'ip_version',
]
absentables = [
'name_servers', 'search',
]
class ApiParameters(Parameters):
pass
class ModuleParameters(Parameters):
@property
def search(self):
search = self._values['search']
if search is None:
return None
if isinstance(search, str) and search != "":
result = list()
result.append(str(search))
return result
if is_empty_list(search):
return []
return search
@property
def name_servers(self):
name_servers = self._values['name_servers']
if name_servers is None:
return None
if isinstance(name_servers, str) and name_servers != "":
result = list()
result.append(str(name_servers))
return result
if is_empty_list(name_servers):
return []
return name_servers
@property
def cache(self):
if self._values['cache'] is None:
return None
if str(self._values['cache']) in ['enabled', 'enable']:
return 'enable'
else:
return 'disable'
@property
def ip_version(self):
if self._values['ip_version'] == 6:
return "options inet6"
elif self._values['ip_version'] == 4:
return ""
else:
return None
class Changes(Parameters):
def to_return(self):
result = {}
try:
for returnable in self.returnables:
change = getattr(self, returnable)
if isinstance(change, dict):
result.update(change)
else:
result[returnable] = change
result = self._filter_params(result)
except Exception:
pass
return result
class UsableChanges(Changes):
pass
class ReportableChanges(Changes):
@property
def ip_version(self):
if self._values['ip_version'] == 'options inet6':
return 6
elif self._values['ip_version'] == "":
return 4
else:
return None
class Difference(object):
def __init__(self, want, have=None):
self.want = want
self.have = have
def compare(self, param):
try:
result = getattr(self, param)
return result
except AttributeError:
return self.__default(param)
def __default(self, param):
attr1 = getattr(self.want, param)
try:
attr2 = getattr(self.have, param)
if attr1 != attr2:
return attr1
except AttributeError:
return attr1
@property
def ip_version(self):
if self.want.ip_version is None:
return None
if self.want.ip_version == "" and self.have.ip_version is None:
return None
if self.want.ip_version == self.have.ip_version:
return None
if self.want.ip_version != self.have.ip_version:
return self.want.ip_version
@property
def name_servers(self):
state = self.want.state
if self.want.name_servers is None:
return None
if state == 'absent':
if self.have.name_servers is None and self.want.name_servers:
return None
if set(self.want.name_servers) == set(self.have.name_servers):
return []
if set(self.want.name_servers) != set(self.have.name_servers):
return list(set(self.want.name_servers).difference(self.have.name_servers))
if not self.want.name_servers:
if self.have.name_servers is None:
return None
if self.have.name_servers is not None:
return self.want.name_servers
if self.have.name_servers is None:
return self.want.name_servers
if set(self.want.name_servers) != set(self.have.name_servers):
return self.want.name_servers
@property
def search(self):
state = self.want.state
if self.want.search is None:
return None
if not self.want.search:
if self.have.search is None:
return None
if self.have.search is not None:
return self.want.search
if state == 'absent':
if self.have.search is None and self.want.search:
return None
if set(self.want.search) == set(self.have.search):
return []
if set(self.want.search) != set(self.have.search):
return list(set(self.want.search).difference(self.have.search))
if self.have.search is None:
return self.want.search
if set(self.want.search) != set(self.have.search):
return self.want.search
class ModuleManager(object):
def __init__(self, *args, **kwargs):
self.module = kwargs.pop('module', None)
self.client = F5RestClient(**self.module.params)
self.want = ModuleParameters(params=self.module.params)
self.have = ApiParameters()
self.changes = UsableChanges()
def _announce_deprecations(self, result):
warnings = result.pop('__warnings', [])
for warning in warnings:
self.module.deprecate(
msg=warning['msg'],
version=warning['version']
)
def _update_changed_options(self):
diff = Difference(self.want, self.have)
updatables = Parameters.updatables
changed = dict()
for k in updatables:
change = diff.compare(k)
if change is None:
continue
else:
if isinstance(change, dict):
changed.update(change)
else:
changed[k] = change
if changed:
self.changes = UsableChanges(params=changed)
return True
return False
def _absent_changed_options(self):
diff = Difference(self.want, self.have)
absentables = Parameters.absentables
changed = dict()
for k in absentables:
change = diff.compare(k)
if change is None:
continue
else:
if isinstance(change, dict):
changed.update(change)
else:
changed[k] = change
if changed:
self.changes = UsableChanges(params=changed)
return True
return False
def exec_module(self):
changed = False
result = dict()
state = self.want.state
if state == "present":
changed = self.update()
elif state == "absent":
changed = self.absent()
reportable = ReportableChanges(params=self.changes.to_return())
changes = reportable.to_return()
result.update(**changes)
result.update(dict(changed=changed))
self._announce_deprecations(result)
return result
def update(self):
self.have = self.read_current_from_device()
if not self.should_update():
return False
if self.module.check_mode:
return True
self.update_on_device()
return True
def should_update(self):
result = self._update_changed_options()
if result:
return True
return False
def should_absent(self):
result = self._absent_changed_options()
if result:
return True
return False
def absent(self):
self.have = self.read_current_from_device()
if not self.should_absent():
return False
if self.module.check_mode:
return True
self.absent_on_device()
return True
def read_dns_cache_setting(self):
uri = "https://{0}:{1}/mgmt/tm/sys/db/{2}".format(
self.client.provider['server'],
self.client.provider['server_port'],
'dns.cache'
)
resp = self.client.api.get(uri)
try:
response = resp.json()
except ValueError as ex:
raise F5ModuleError(str(ex))
if 'code' in response and response['code'] == 400:
if 'message' in response:
raise F5ModuleError(response['message'])
else:
raise F5ModuleError(resp.content)
return response
def read_current_from_device(self):
cache = self.read_dns_cache_setting()
uri = "https://{0}:{1}/mgmt/tm/sys/dns/".format(
self.client.provider['server'],
self.client.provider['server_port'],
)
resp = self.client.api.get(uri)
try:
response = resp.json()
except ValueError as ex:
raise F5ModuleError(str(ex))
if 'code' in response and response['code'] == 400:
if 'message' in response:
raise F5ModuleError(response['message'])
else:
raise F5ModuleError(resp.content)
if cache:
response['cache'] = cache['value']
return ApiParameters(params=response)
def update_on_device(self):
params = self.changes.api_params()
if params:
uri = "https://{0}:{1}/mgmt/tm/sys/dns/".format(
self.client.provider['server'],
self.client.provider['server_port'],
)
resp = self.client.api.patch(uri, json=params)
try:
response = resp.json()
except ValueError as ex:
raise F5ModuleError(str(ex))
if 'code' in response and response['code'] == 400:
if 'message' in response:
raise F5ModuleError(response['message'])
else:
raise F5ModuleError(resp.content)
if self.want.cache:
uri = "https://{0}:{1}/mgmt/tm/sys/db/{2}".format(
self.client.provider['server'],
self.client.provider['server_port'],
'dns.cache'
)
payload = {"value": self.want.cache}
resp = self.client.api.patch(uri, json=payload)
try:
response = resp.json()
except ValueError as ex:
raise F5ModuleError(str(ex))
if 'code' in response and response['code'] == 400:
if 'message' in response:
raise F5ModuleError(response['message'])
else:
raise F5ModuleError(resp.content)
def absent_on_device(self):
params = self.changes.api_params()
uri = "https://{0}:{1}/mgmt/tm/sys/dns/".format(
self.client.provider['server'],
self.client.provider['server_port'],
)
resp = self.client.api.patch(uri, json=params)
try:
response = resp.json()
except ValueError as ex:
raise F5ModuleError(str(ex))
if 'code' in response and response['code'] == 400:
if 'message' in response:
raise F5ModuleError(response['message'])
else:
raise F5ModuleError(resp.content)
class ArgumentSpec(object):
def __init__(self):
self.supports_check_mode = True
argument_spec = dict(
cache=dict(
choices=['disabled', 'enabled', 'disable', 'enable']
),
name_servers=dict(
type='list'
),
search=dict(
type='list'
),
ip_version=dict(
choices=[4, 6],
type='int'
),
state=dict(
default='present',
choices=['absent', 'present']
)
)
self.argument_spec = {}
self.argument_spec.update(f5_argument_spec)
self.argument_spec.update(argument_spec)
self.required_one_of = [
['name_servers', 'search', 'ip_version', 'cache']
]
def main():
spec = ArgumentSpec()
module = AnsibleModule(
argument_spec=spec.argument_spec,
supports_check_mode=spec.supports_check_mode,
required_one_of=spec.required_one_of
)
try:
mm = ModuleManager(module=module)
results = mm.exec_module()
module.exit_json(**results)
except F5ModuleError as ex:
module.fail_json(msg=str(ex))
if __name__ == '__main__':
main()
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