839 lines
25 KiB
Python
839 lines
25 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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#
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# Copyright (c) 2017 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': 'community'}
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DOCUMENTATION = r'''
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---
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module: bigip_policy
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short_description: Manage general policy configuration on a BIG-IP
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description:
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- Manages general policy configuration on a BIG-IP. This module is best
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used in conjunction with the C(bigip_policy_rule) module. This module
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can handle general configuration like setting the draft state of the policy,
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the description, and things unrelated to the policy rules themselves.
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It is also the first module that should be used when creating rules as
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the C(bigip_policy_rule) module requires a policy parameter.
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version_added: 2.5
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options:
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description:
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description:
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- The description to attach to the policy.
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- This parameter is only supported on versions of BIG-IP >= 12.1.0. On earlier
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versions it will simply be ignored.
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name:
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description:
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- The name of the policy to create.
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required: True
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state:
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description:
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- When C(state) is C(present), ensures that the policy exists and is
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published. When C(state) is C(absent), ensures that the policy is removed,
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even if it is currently drafted.
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- When C(state) is C(draft), ensures that the policy exists and is drafted.
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When modifying rules, it is required that policies first be in a draft.
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- Drafting is only supported on versions of BIG-IP >= 12.1.0. On versions
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prior to that, specifying a C(state) of C(draft) will raise an error.
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choices:
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- present
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- absent
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- draft
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strategy:
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description:
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- Specifies the method to determine which actions get executed in the
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case where there are multiple rules that match. When creating new
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policies, the default is C(first).
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- This module does not allow you to specify the C(best) strategy to use.
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It will choose the system default (C(/Common/best-match)) for you instead.
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choices:
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- first
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- all
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- best
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rules:
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description:
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- Specifies a list of rules that you want associated with this policy.
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The order of this list is the order they will be evaluated by BIG-IP.
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If the specified rules do not exist (for example when creating a new
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policy) then they will be created.
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- The C(conditions) for a default rule are C(all).
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- The C(actions) for a default rule are C(ignore).
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- The C(bigip_policy_rule) module can be used to create and edit existing
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and new rules.
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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 policy which is immediately published
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bigip_policy:
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name: Policy-Foo
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state: present
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delegate_to: localhost
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- name: Add a rule to the new policy - Immediately published
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bigip_policy_rule:
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policy: Policy-Foo
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name: ABC
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conditions:
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- type: http_uri
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path_starts_with:
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- /ABC
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- foo
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- bar
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path_ends_with:
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- baz
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actions:
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- forward: yes
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select: yes
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pool: pool-svrs
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- name: Add multiple rules to the new policy - Added in the order they are specified
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bigip_policy_rule:
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policy: Policy-Foo
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name: "{{ item.name }}"
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conditions: "{{ item.conditions }}"
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actions: "{{ item.actions }}"
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with_items:
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- name: rule1
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actions:
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- type: forward
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pool: pool-svrs
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conditions:
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- type: http_uri
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path_starts_with: /euro
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- name: HomePage
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actions:
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- type: forward
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pool: pool-svrs
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conditions:
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- type: http_uri
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path_starts_with: /HomePage/
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- name: Create policy specify default rules - Immediately published
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bigip_policy:
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name: Policy-Bar
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state: present
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rules:
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- rule1
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- rule2
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- rule3
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- name: Create policy specify default rules - Left in a draft
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bigip_policy:
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name: Policy-Baz
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state: draft
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rules:
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- rule1
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- rule2
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- rule3
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'''
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RETURN = r'''
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strategy:
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description: The new strategy set on the policy.
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returned: changed and success
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type: int
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sample: first-match
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description:
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description:
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- The new description of the policy.
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- This value is only returned for BIG-IP devices >= 12.1.0.
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returned: changed and success
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type: string
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sample: This is my description
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rules:
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description: List of the rules, and their order, applied to the policy.
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returned: changed and success
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type: list
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sample: ['/Common/rule1', '/Common/rule2']
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'''
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import re
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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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from distutils.version import LooseVersion
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try:
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from library.module_utils.network.f5.bigip import HAS_F5SDK
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from library.module_utils.network.f5.bigip import F5Client
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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 f5_argument_spec
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try:
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from library.module_utils.network.f5.common import iControlUnexpectedHTTPError
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except ImportError:
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HAS_F5SDK = False
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except ImportError:
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from ansible.module_utils.network.f5.bigip import HAS_F5SDK
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from ansible.module_utils.network.f5.bigip import F5Client
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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 f5_argument_spec
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try:
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from ansible.module_utils.network.f5.common import iControlUnexpectedHTTPError
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except ImportError:
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HAS_F5SDK = False
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try:
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from f5.sdk_exception import NonExtantPolicyRule
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except ImportError:
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HAS_F5SDK = False
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class Parameters(AnsibleF5Parameters):
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def to_return(self):
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result = {}
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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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return result
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@property
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def strategy(self):
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if self._values['strategy'] is None:
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return None
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# Look for 'first' from Ansible or REST
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elif self._values['strategy'] == 'first':
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return self._get_builtin_strategy('first')
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elif 'first-match' in self._values['strategy']:
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return str(self._values['strategy'])
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# Look for 'all' from Ansible or REST
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elif self._values['strategy'] == 'all':
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return self._get_builtin_strategy('all')
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elif 'all-match' in self._values['strategy']:
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return str(self._values['strategy'])
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else:
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# Look for 'best' from Ansible or REST
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if self._values['strategy'] == 'best':
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return self._get_builtin_strategy('best')
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elif 'best-match' in self._values['strategy']:
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return str(self._values['strategy'])
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else:
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# These are custom strategies. The strategy may include the
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# partition, but if it does not, then we add the partition
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# that is provided to the module.
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return self._get_custom_strategy_name()
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def _get_builtin_strategy(self, strategy):
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return '/Common/{0}-match'.format(strategy)
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def _get_custom_strategy_name(self):
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strategy = self._values['strategy']
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if re.match(r'(\/[a-zA-Z_0-9.-]+){2}', strategy):
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return strategy
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elif re.match(r'[a-zA-Z_0-9.-]+', strategy):
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return '/{0}/{1}'.format(self.partition, strategy)
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else:
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raise F5ModuleError(
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"The provided strategy name is invalid!"
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)
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@property
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def rules(self):
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if self._values['rules'] is None:
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return None
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# In case rule values are unicode (as they may be coming from the API
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result = [str(x) for x in self._values['rules']]
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return result
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class SimpleParameters(Parameters):
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api_attributes = [
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'strategy'
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]
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updatables = [
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'strategy', 'rules'
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]
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returnables = [
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'strategy', 'rules'
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]
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class ComplexParameters(Parameters):
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api_attributes = [
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'strategy', 'description'
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]
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updatables = [
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'strategy', 'description', 'rules'
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]
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returnables = [
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'strategy', 'description', 'rules'
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]
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class BaseManager(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.have = None
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self.want = Parameters(params=self.module.params)
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def _announce_deprecations(self):
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warnings = []
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if self.want:
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warnings += self.want._values.get('__deprecated', [])
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if self.have:
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warnings += self.have._values.get('__deprecated', [])
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for warning in warnings:
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self.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 _announce_warnings(self):
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warnings = []
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if self.want:
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warnings += self.want._values.get('__warning', [])
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if self.have:
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warnings += self.have._values.get('__warning', [])
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for warning in warnings:
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self.module.warn(warning['msg'])
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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 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 _validate_creation_parameters(self):
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if self.want.strategy is None:
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self.want.update(dict(strategy='first'))
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def _get_rule_names(self, resource):
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rules = resource.rules_s.get_collection()
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rules.sort(key=lambda x: x.ordinal)
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result = [x.name for x in rules]
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return result
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def _upsert_policy_rules_on_device(self, policy):
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rules = self.changes.rules
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if rules is None:
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rules = []
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for idx, rule in enumerate(rules):
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try:
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resource = policy.rules_s.rules.load(name=rule)
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if int(resource.ordinal) != idx:
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resource.modify(ordinal=idx)
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except NonExtantPolicyRule:
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policy.rules_s.rules.create(name=rule, ordinal=idx)
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self._remove_rule_difference(rules, policy)
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def _remove_rule_difference(self, rules, policy=None):
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if not rules or not self.have.rules:
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return
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have_rules = set(self.have.rules)
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want_rules = set(rules)
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removable = have_rules.difference(want_rules)
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for remove in removable:
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resource = policy.rules_s.rules.load(name=remove)
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resource.delete()
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class SimpleManager(BaseManager):
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def __init__(self, *args, **kwargs):
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super(SimpleManager, self).__init__(**kwargs)
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self.want = SimpleParameters(params=self.module.params)
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self.have = SimpleParameters()
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self.changes = SimpleChanges()
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def _set_changed_options(self):
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changed = {}
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for key in SimpleParameters.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 = SimpleChanges(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 = SimpleParameters.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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changed[k] = change
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if changed:
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self.changes = SimpleChanges(params=changed)
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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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try:
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if state == 'draft':
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raise F5ModuleError(
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"The 'draft' status is not available on BIG-IP versions < 12.1.0"
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)
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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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except iControlUnexpectedHTTPError as e:
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raise F5ModuleError(str(e))
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changes = self.changes.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()
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self._announce_warnings()
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return result
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def read_current_from_device(self):
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resource = self.client.api.tm.ltm.policys.policy.load(
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name=self.want.name,
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partition=self.want.partition
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)
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rules = self._get_rule_names(resource)
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result = SimpleParameters(params=resource.attrs)
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result.update(dict(rules=rules))
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return result
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def exists(self):
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result = self.client.api.tm.ltm.policys.policy.exists(
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name=self.want.name,
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partition=self.want.partition
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)
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return result
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def update_on_device(self):
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params = self.changes.api_params()
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resource = self.client.api.tm.ltm.policys.policy.load(
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name=self.want.name,
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partition=self.want.partition
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)
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if params:
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resource.modify(**params)
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self._upsert_policy_rules_on_device(resource)
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|
|
|
def create(self):
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self._validate_creation_parameters()
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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
|
|
|
|
def create_on_device(self):
|
|
params = self.want.api_params()
|
|
|
|
params = dict(
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|
name=self.want.name,
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partition=self.want.partition,
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**params
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)
|
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resource = self.client.api.tm.ltm.policys.policy.create(**params)
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self._upsert_policy_rules_on_device(resource)
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return True
|
|
|
|
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 absent(self):
|
|
changed = False
|
|
if self.exists():
|
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changed = self.remove()
|
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return changed
|
|
|
|
def remove(self):
|
|
if self.module.check_mode:
|
|
return True
|
|
self.remove_from_device()
|
|
if self.exists():
|
|
raise F5ModuleError("Failed to delete the policy")
|
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return True
|
|
|
|
def remove_from_device(self):
|
|
resource = self.client.api.tm.ltm.policys.policy.load(
|
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name=self.want.name,
|
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partition=self.want.partition
|
|
)
|
|
resource.delete()
|
|
|
|
|
|
class ComplexManager(BaseManager):
|
|
def __init__(self, *args, **kwargs):
|
|
super(ComplexManager, self).__init__(**kwargs)
|
|
self.want = ComplexParameters(params=self.module.params)
|
|
self.have = ComplexParameters()
|
|
self.changes = ComplexChanges()
|
|
|
|
def _set_changed_options(self):
|
|
changed = {}
|
|
for key in ComplexParameters.returnables:
|
|
if getattr(self.want, key) is not None:
|
|
changed[key] = getattr(self.want, key)
|
|
if changed:
|
|
self.changes = ComplexChanges(params=changed)
|
|
|
|
def _update_changed_options(self):
|
|
diff = Difference(self.want, self.have)
|
|
updatables = ComplexParameters.updatables
|
|
changed = dict()
|
|
for k in updatables:
|
|
change = diff.compare(k)
|
|
if change is None:
|
|
continue
|
|
else:
|
|
changed[k] = change
|
|
if changed:
|
|
self.changes = ComplexChanges(params=changed)
|
|
return True
|
|
return False
|
|
|
|
def exec_module(self):
|
|
changed = False
|
|
result = dict()
|
|
state = self.want.state
|
|
|
|
try:
|
|
if state in ["present", "draft"]:
|
|
changed = self.present()
|
|
elif state == "absent":
|
|
changed = self.absent()
|
|
except iControlUnexpectedHTTPError as e:
|
|
raise F5ModuleError(str(e))
|
|
|
|
changes = self.changes.to_return()
|
|
result.update(**changes)
|
|
result.update(dict(changed=changed))
|
|
return result
|
|
|
|
def should_update(self):
|
|
result = self._update_changed_options()
|
|
drafted = self.draft_status_changed()
|
|
if any(x is True for x in [result, drafted]):
|
|
return True
|
|
return False
|
|
|
|
def draft_status_changed(self):
|
|
if self.draft_exists() and self.want.state == 'draft':
|
|
drafted = False
|
|
elif not self.draft_exists() and self.want.state == 'present':
|
|
drafted = False
|
|
else:
|
|
drafted = True
|
|
return drafted
|
|
|
|
def present(self):
|
|
if self.draft_exists() or self.policy_exists():
|
|
return self.update()
|
|
else:
|
|
return self.create()
|
|
|
|
def absent(self):
|
|
changed = False
|
|
if self.draft_exists() or self.policy_exists():
|
|
changed = self.remove()
|
|
return changed
|
|
|
|
def remove(self):
|
|
if self.module.check_mode:
|
|
return True
|
|
self.remove_from_device()
|
|
if self.draft_exists() or self.policy_exists():
|
|
raise F5ModuleError("Failed to delete the policy")
|
|
return True
|
|
|
|
def remove_from_device(self):
|
|
if self.draft_exists():
|
|
resource = self.client.api.tm.ltm.policys.policy.load(
|
|
name=self.want.name,
|
|
partition=self.want.partition,
|
|
subPath='Drafts'
|
|
)
|
|
resource.delete()
|
|
if self.policy_exists():
|
|
resource = self.client.api.tm.ltm.policys.policy.load(
|
|
name=self.want.name,
|
|
partition=self.want.partition
|
|
)
|
|
resource.delete()
|
|
|
|
def read_current_from_device(self):
|
|
if self.draft_exists():
|
|
resource = self.client.api.tm.ltm.policys.policy.load(
|
|
name=self.want.name,
|
|
partition=self.want.partition,
|
|
subPath='Drafts'
|
|
)
|
|
else:
|
|
resource = self.client.api.tm.ltm.policys.policy.load(
|
|
name=self.want.name,
|
|
partition=self.want.partition
|
|
)
|
|
|
|
rules = self._get_rule_names(resource)
|
|
result = ComplexParameters(params=resource.attrs)
|
|
result.update(dict(rules=rules))
|
|
return result
|
|
|
|
def policy_exists(self):
|
|
params = dict(
|
|
name=self.want.name,
|
|
partition=self.want.partition
|
|
)
|
|
result = self.client.api.tm.ltm.policys.policy.exists(**params)
|
|
return result
|
|
|
|
def draft_exists(self):
|
|
params = dict(
|
|
name=self.want.name,
|
|
partition=self.want.partition,
|
|
subPath='Drafts'
|
|
)
|
|
result = self.client.api.tm.ltm.policys.policy.exists(**params)
|
|
return result
|
|
|
|
def _create_new_policy_draft(self):
|
|
params = self.want.api_params()
|
|
params = dict(
|
|
name=self.want.name,
|
|
partition=self.want.partition,
|
|
subPath='Drafts',
|
|
**params
|
|
)
|
|
self.client.api.tm.ltm.policys.policy.create(**params)
|
|
return True
|
|
|
|
def _create_existing_policy_draft(self):
|
|
params = dict(
|
|
name=self.want.name,
|
|
partition=self.want.partition,
|
|
)
|
|
resource = self.client.api.tm.ltm.policys.policy.load(**params)
|
|
resource.draft()
|
|
return True
|
|
|
|
def update_on_device(self):
|
|
params = self.changes.api_params()
|
|
|
|
resource = self.client.api.tm.ltm.policys.policy.load(
|
|
name=self.want.name,
|
|
partition=self.want.partition,
|
|
subPath='Drafts'
|
|
)
|
|
if params:
|
|
resource.modify(**params)
|
|
self._upsert_policy_rules_on_device(resource)
|
|
|
|
def publish(self):
|
|
resource = self.client.api.tm.ltm.policys.policy.load(
|
|
name=self.want.name,
|
|
partition=self.want.partition,
|
|
subPath='Drafts'
|
|
)
|
|
resource.publish()
|
|
return True
|
|
|
|
def create(self):
|
|
self._validate_creation_parameters()
|
|
|
|
self._set_changed_options()
|
|
if self.module.check_mode:
|
|
return True
|
|
|
|
if not self.draft_exists():
|
|
self._create_new_policy_draft()
|
|
|
|
# Because we always need to modify drafts, "creating on the device"
|
|
# is actually identical to just updating.
|
|
self.update_on_device()
|
|
|
|
if self.want.state == 'draft':
|
|
return True
|
|
else:
|
|
return self.publish()
|
|
|
|
def update(self):
|
|
self.have = self.read_current_from_device()
|
|
if not self.should_update():
|
|
return False
|
|
if self.module.check_mode:
|
|
return True
|
|
|
|
if not self.draft_exists():
|
|
self._create_existing_policy_draft()
|
|
|
|
if self._update_changed_options():
|
|
self.update_on_device()
|
|
|
|
if self.want.state == 'draft':
|
|
return True
|
|
else:
|
|
return self.publish()
|
|
|
|
|
|
class SimpleChanges(SimpleParameters):
|
|
api_attributes = [
|
|
'strategy'
|
|
]
|
|
|
|
updatables = [
|
|
'strategy', 'rules'
|
|
]
|
|
|
|
returnables = [
|
|
'strategy', 'rules'
|
|
]
|
|
|
|
|
|
class ComplexChanges(ComplexParameters):
|
|
api_attributes = [
|
|
'strategy', 'description'
|
|
]
|
|
|
|
updatables = [
|
|
'strategy', 'description', 'rules'
|
|
]
|
|
|
|
returnables = [
|
|
'strategy', 'description', 'rules'
|
|
]
|
|
|
|
|
|
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 rules(self):
|
|
if self.want.rules != self.have.rules:
|
|
return self.want.rules
|
|
|
|
|
|
class ModuleManager(object):
|
|
def __init__(self, *args, **kwargs):
|
|
self.module = kwargs.get('module', None)
|
|
self.client = kwargs.get('client', None)
|
|
self.kwargs = kwargs
|
|
|
|
def exec_module(self):
|
|
if self.version_is_less_than_12():
|
|
manager = self.get_manager('simple')
|
|
else:
|
|
manager = self.get_manager('complex')
|
|
return manager.exec_module()
|
|
|
|
def get_manager(self, type):
|
|
if type == 'simple':
|
|
return SimpleManager(**self.kwargs)
|
|
elif type == 'complex':
|
|
return ComplexManager(**self.kwargs)
|
|
|
|
def version_is_less_than_12(self):
|
|
version = self.client.api.tmos_version
|
|
if LooseVersion(version) < LooseVersion('12.1.0'):
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
|
|
class ArgumentSpec(object):
|
|
def __init__(self):
|
|
self.supports_check_mode = True
|
|
argument_spec = dict(
|
|
name=dict(
|
|
required=True
|
|
),
|
|
description=dict(),
|
|
rules=dict(type='list'),
|
|
strategy=dict(
|
|
choices=['first', 'all', 'best']
|
|
),
|
|
state=dict(
|
|
default='present',
|
|
choices=['absent', 'present', 'draft']
|
|
),
|
|
partition=dict(
|
|
default='Common',
|
|
fallback=(env_fallback, ['F5_PARTITION'])
|
|
)
|
|
)
|
|
self.argument_spec = {}
|
|
self.argument_spec.update(f5_argument_spec)
|
|
self.argument_spec.update(argument_spec)
|
|
|
|
|
|
def main():
|
|
spec = ArgumentSpec()
|
|
|
|
module = AnsibleModule(
|
|
argument_spec=spec.argument_spec,
|
|
supports_check_mode=spec.supports_check_mode
|
|
)
|
|
if not HAS_F5SDK:
|
|
module.fail_json(msg="The python f5-sdk module is required")
|
|
|
|
try:
|
|
client = F5Client(**module.params)
|
|
mm = ModuleManager(module=module, client=client)
|
|
results = mm.exec_module()
|
|
cleanup_tokens(client)
|
|
module.exit_json(**results)
|
|
except F5ModuleError as ex:
|
|
cleanup_tokens(client)
|
|
module.fail_json(msg=str(ex))
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|