697 lines
20 KiB
Python
697 lines
20 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_gtm_pool
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short_description: Manages F5 BIG-IP GTM pools
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description:
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- Manages F5 BIG-IP GTM pools.
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version_added: "2.4"
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options:
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state:
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description:
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- Pool member state. When C(present), ensures that the pool is
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created and enabled. When C(absent), ensures that the pool is
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removed from the system. When C(enabled) or C(disabled), ensures
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that the pool is enabled or disabled (respectively) on the remote
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device.
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choices:
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- present
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- absent
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- enabled
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- disabled
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preferred_lb_method:
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description:
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- The load balancing mode that the system tries first.
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choices:
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- round-robin
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- return-to-dns
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- ratio
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- topology
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- static-persistence
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- global-availability
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- virtual-server-capacity
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- least-connections
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- lowest-round-trip-time
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- fewest-hops
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- packet-rate
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- cpu
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- completion-rate
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- quality-of-service
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- kilobytes-per-second
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- drop-packet
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- fallback-ip
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- virtual-server-score
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alternate_lb_method:
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description:
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- The load balancing mode that the system tries if the
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C(preferred_lb_method) is unsuccessful in picking a pool.
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choices:
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- round-robin
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- return-to-dns
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- none
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- ratio
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- topology
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- static-persistence
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- global-availability
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- virtual-server-capacity
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- packet-rate
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- drop-packet
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- fallback-ip
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- virtual-server-score
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fallback_lb_method:
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description:
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- The load balancing mode that the system tries if both the
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C(preferred_lb_method) and C(alternate_lb_method)s are unsuccessful
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in picking a pool.
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choices:
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- round-robin
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- return-to-dns
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- ratio
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- topology
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- static-persistence
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- global-availability
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- virtual-server-capacity
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- least-connections
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- lowest-round-trip-time
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- fewest-hops
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- packet-rate
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- cpu
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- completion-rate
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- quality-of-service
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- kilobytes-per-second
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- drop-packet
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- fallback-ip
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- virtual-server-score
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fallback_ip:
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description:
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- Specifies the IPv4, or IPv6 address of the server to which the system
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directs requests when it cannot use one of its pools to do so.
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Note that the system uses the fallback IP only if you select the
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C(fallback_ip) load balancing method.
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type:
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description:
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- The type of GTM pool that you want to create. On BIG-IP releases
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prior to version 12, this parameter is not required. On later versions
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of BIG-IP, this is a required parameter.
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choices:
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- a
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- aaaa
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- cname
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- mx
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- naptr
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- srv
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name:
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description:
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- Name of the GTM pool.
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required: True
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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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version_added: 2.5
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notes:
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- Requires the netaddr Python package on the host. This is as easy as
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pip install netaddr.
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extends_documentation_fragment: f5
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requirements:
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- netaddr
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author:
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- Tim Rupp (@caphrim007)
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'''
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RETURN = r'''
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preferred_lb_method:
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description: New preferred load balancing method for the pool.
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returned: changed
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type: string
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sample: topology
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alternate_lb_method:
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description: New alternate load balancing method for the pool.
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returned: changed
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type: string
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sample: drop-packet
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fallback_lb_method:
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description: New fallback load balancing method for the pool.
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returned: changed
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type: string
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sample: fewest-hops
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fallback_ip:
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description: New fallback IP used when load balacing using the C(fallback_ip) method.
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returned: changed
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type: string
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sample: 10.10.10.10
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'''
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EXAMPLES = r'''
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- name: Create a GTM pool
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bigip_gtm_pool:
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server: lb.mydomain.com
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user: admin
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password: secret
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name: my_pool
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delegate_to: localhost
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- name: Disable pool
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bigip_gtm_pool:
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server: lb.mydomain.com
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user: admin
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password: secret
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state: disabled
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name: my_pool
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delegate_to: localhost
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'''
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from distutils.version import LooseVersion
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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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HAS_DEVEL_IMPORTS = False
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try:
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# Sideband repository used for dev
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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 fqdn_name
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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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HAS_DEVEL_IMPORTS = True
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except ImportError:
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# Upstream Ansible
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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 fqdn_name
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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 netaddr import IPAddress, AddrFormatError
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HAS_NETADDR = True
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except ImportError:
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HAS_NETADDR = False
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import copy
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class Parameters(AnsibleF5Parameters):
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api_map = {
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'loadBalancingMode': 'preferred_lb_method',
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'alternateMode': 'alternate_lb_method',
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'fallbackMode': 'fallback_lb_method',
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'verifyMemberAvailability': 'verify_member_availability',
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'fallbackIpv4': 'fallback_ip',
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'fallbackIpv6': 'fallback_ip',
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'fallbackIp': 'fallback_ip'
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}
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updatables = [
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'preferred_lb_method', 'alternate_lb_method', 'fallback_lb_method',
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'fallback_ip', 'state'
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]
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returnables = [
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'preferred_lb_method', 'alternate_lb_method', 'fallback_lb_method',
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'fallback_ip'
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]
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api_attributes = [
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'loadBalancingMode', 'alternateMode', 'fallbackMode', 'verifyMemberAvailability',
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'fallbackIpv4', 'fallbackIpv6', 'fallbackIp', 'enabled', 'disabled'
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]
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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 collection(self):
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type_map = dict(
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a='a_s',
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aaaa='aaaas',
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cname='cnames',
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mx='mxs',
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naptr='naptrs',
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srv='srvs'
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)
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if self._values['type'] is None:
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return None
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wideip_type = self._values['type']
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return type_map[wideip_type]
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@property
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def type(self):
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if self._values['type'] is None:
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return None
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return str(self._values['type'])
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@property
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def verify_member_availability(self):
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if self._values['verify_member_availability'] is None:
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return None
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elif self._values['verify_member_availability']:
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return 'enabled'
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else:
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return 'disabled'
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@property
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def fallback_ip(self):
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if self._values['fallback_ip'] is None:
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return None
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if self._values['fallback_ip'] == 'any':
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return 'any'
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if self._values['fallback_ip'] == 'any6':
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return 'any6'
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try:
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address = IPAddress(self._values['fallback_ip'])
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if address.version == 4:
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return str(address.ip)
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elif address.version == 6:
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return str(address.ip)
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return None
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except AddrFormatError:
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raise F5ModuleError(
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'The provided fallback address is not a valid IPv4 address'
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)
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@property
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def state(self):
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if self._values['state'] == 'enabled':
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return 'present'
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return self._values['state']
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@property
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def enabled(self):
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if self._values['enabled'] is None:
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return None
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return True
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@property
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def disabled(self):
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if self._values['disabled'] is None:
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return None
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return True
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class Changes(Parameters):
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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 state(self):
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if self.want.state == 'disabled' and self.have.enabled:
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return dict(
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disabled=True
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)
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elif self.want.state in ['present', 'enabled'] and self.have.disabled:
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return dict(
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enabled=True
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)
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class ModuleManager(object):
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def __init__(self, *args, **kwargs):
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self.kwargs = kwargs
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self.client = kwargs.get('client', None)
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def exec_module(self):
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if not self.gtm_provisioned():
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raise F5ModuleError(
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"GTM must be provisioned to use this module."
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)
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if self.version_is_less_than_12():
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manager = self.get_manager('untyped')
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else:
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manager = self.get_manager('typed')
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return manager.exec_module()
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def get_manager(self, type):
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if type == 'typed':
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return TypedManager(**self.kwargs)
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elif type == 'untyped':
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return UntypedManager(**self.kwargs)
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def version_is_less_than_12(self):
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version = self.client.api.tmos_version
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if LooseVersion(version) < LooseVersion('12.0.0'):
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return True
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else:
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return False
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def gtm_provisioned(self):
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resource = self.client.api.tm.sys.dbs.db.load(
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name='provisioned.cpu.gtm'
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)
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if int(resource.value) == 0:
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return False
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return True
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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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self.changes = Changes()
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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 = Changes(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 = Changes(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 in ["present", "disabled"]:
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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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return result
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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 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 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 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 create(self):
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if self.want.state == 'disabled':
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self.want.update({'disabled': True})
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elif self.want.state in ['present', 'enabled']:
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self.want.update({'enabled': True})
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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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if self.exists():
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return True
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else:
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raise F5ModuleError("Failed to create the GTM pool")
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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 GTM pool")
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return True
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class TypedManager(BaseManager):
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def __init__(self, *args, **kwargs):
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super(TypedManager, self).__init__(**kwargs)
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if self.want.type is None:
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raise F5ModuleError(
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"The 'type' option is required for BIG-IP instances "
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"greater than or equal to 12.x"
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)
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def present(self):
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types = [
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'a', 'aaaa', 'cname', 'mx', 'naptr', 'srv'
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]
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if self.want.type is None:
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raise F5ModuleError(
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"A pool 'type' must be specified"
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)
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elif self.want.type not in types:
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raise F5ModuleError(
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"The specified pool type is invalid"
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)
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return super(TypedManager, self).present()
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def exists(self):
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pools = self.client.api.tm.gtm.pools
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collection = getattr(pools, self.want.collection)
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resource = getattr(collection, self.want.type)
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result = resource.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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pools = self.client.api.tm.gtm.pools
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collection = getattr(pools, self.want.collection)
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resource = getattr(collection, self.want.type)
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result = resource.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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result.modify(**params)
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def read_current_from_device(self):
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pools = self.client.api.tm.gtm.pools
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collection = getattr(pools, self.want.collection)
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resource = getattr(collection, self.want.type)
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result = resource.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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result = result.attrs
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return Parameters(params=result)
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def create_on_device(self):
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params = self.want.api_params()
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pools = self.client.api.tm.gtm.pools
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collection = getattr(pools, self.want.collection)
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resource = getattr(collection, self.want.type)
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resource.create(
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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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def remove_from_device(self):
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pools = self.client.api.tm.gtm.pools
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collection = getattr(pools, self.want.collection)
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resource = getattr(collection, self.want.type)
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resource = resource.load(
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name=self.want.name,
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partition=self.want.partition
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)
|
|
if resource:
|
|
resource.delete()
|
|
|
|
|
|
class UntypedManager(BaseManager):
|
|
def exists(self):
|
|
result = self.client.api.tm.gtm.pools.pool.exists(
|
|
name=self.want.name,
|
|
partition=self.want.partition
|
|
)
|
|
return result
|
|
|
|
def update_on_device(self):
|
|
params = self.changes.api_params()
|
|
resource = self.client.api.tm.gtm.pools.pool.load(
|
|
name=self.want.name,
|
|
partition=self.want.partition
|
|
)
|
|
resource.modify(**params)
|
|
|
|
def read_current_from_device(self):
|
|
resource = self.client.api.tm.gtm.pools.pool.load(
|
|
name=self.want.name,
|
|
partition=self.want.partition
|
|
)
|
|
result = resource.attrs
|
|
return Parameters(params=result)
|
|
|
|
def create_on_device(self):
|
|
params = self.want.api_params()
|
|
self.client.api.tm.gtm.pools.pool.create(
|
|
name=self.want.name,
|
|
partition=self.want.partition,
|
|
**params
|
|
)
|
|
|
|
def remove_from_device(self):
|
|
resource = self.client.api.tm.gtm.pools.pool.load(
|
|
name=self.want.name,
|
|
partition=self.want.partition
|
|
)
|
|
resource.delete()
|
|
|
|
|
|
class ArgumentSpec(object):
|
|
def __init__(self):
|
|
self.states = ['absent', 'present', 'enabled', 'disabled']
|
|
self.preferred_lb_methods = [
|
|
'round-robin', 'return-to-dns', 'ratio', 'topology',
|
|
'static-persistence', 'global-availability',
|
|
'virtual-server-capacity', 'least-connections',
|
|
'lowest-round-trip-time', 'fewest-hops', 'packet-rate', 'cpu',
|
|
'completion-rate', 'quality-of-service', 'kilobytes-per-second',
|
|
'drop-packet', 'fallback-ip', 'virtual-server-score'
|
|
]
|
|
self.alternate_lb_methods = [
|
|
'round-robin', 'return-to-dns', 'none', 'ratio', 'topology',
|
|
'static-persistence', 'global-availability',
|
|
'virtual-server-capacity', 'packet-rate', 'drop-packet',
|
|
'fallback-ip', 'virtual-server-score'
|
|
]
|
|
self.fallback_lb_methods = copy.copy(self.preferred_lb_methods)
|
|
self.fallback_lb_methods.append('none')
|
|
self.types = [
|
|
'a', 'aaaa', 'cname', 'mx', 'naptr', 'srv'
|
|
]
|
|
self.supports_check_mode = True
|
|
argument_spec = dict(
|
|
name=dict(required=True),
|
|
state=dict(
|
|
default='present',
|
|
choices=self.states,
|
|
),
|
|
preferred_lb_method=dict(
|
|
choices=self.preferred_lb_methods,
|
|
),
|
|
fallback_lb_method=dict(
|
|
choices=self.fallback_lb_methods,
|
|
),
|
|
alternate_lb_method=dict(
|
|
choices=self.alternate_lb_methods,
|
|
),
|
|
fallback_ip=dict(),
|
|
type=dict(
|
|
choices=self.types
|
|
),
|
|
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)
|
|
self.required_if = [
|
|
['preferred_lb_method', 'fallback-ip', ['fallback_ip']],
|
|
['fallback_lb_method', 'fallback-ip', ['fallback_ip']],
|
|
['alternate_lb_method', 'fallback-ip', ['fallback_ip']]
|
|
]
|
|
|
|
|
|
def main():
|
|
spec = ArgumentSpec()
|
|
|
|
module = AnsibleModule(
|
|
argument_spec=spec.argument_spec,
|
|
supports_check_mode=spec.supports_check_mode,
|
|
required_if=spec.required_if
|
|
)
|
|
if not HAS_F5SDK:
|
|
module.fail_json(msg="The python f5-sdk module is required")
|
|
if not HAS_NETADDR:
|
|
module.fail_json(msg="The python netaddr 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()
|