492 lines
15 KiB
Python
492 lines
15 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_remote_syslog
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short_description: Manipulate remote syslog settings on a BIG-IP
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description:
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- Manipulate remote syslog settings on a BIG-IP.
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version_added: 2.5
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options:
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remote_host:
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description:
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- Specifies the IP address, or hostname, for the remote system to
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which the system sends log messages.
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required: True
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remote_port:
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description:
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- Specifies the port that the system uses to send messages to the
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remote logging server. When creating a remote syslog, if this parameter
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is not specified, the default value C(514) is used.
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local_ip:
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description:
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- Specifies the local IP address of the system that is logging. To
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provide no local IP, specify the value C(none). When creating a
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remote syslog, if this parameter is not specified, the default value
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C(none) is used.
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state:
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description:
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- When C(present), guarantees that the remote syslog exists with the provided
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attributes.
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- When C(absent), removes the remote syslog from the system.
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default: present
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choices:
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- absent
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- present
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notes:
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- Requires the netaddr Python package on the host. This is as easy as pip
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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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EXAMPLES = r'''
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- name: Add a remote syslog server to log to
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bigip_remote_syslog:
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remote_host: 10.10.10.10
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password: secret
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server: lb.mydomain.com
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user: admin
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validate_certs: no
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delegate_to: localhost
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- name: Add a remote syslog server on a non-standard port to log to
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bigip_remote_syslog:
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remote_host: 10.10.10.10
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remote_port: 1234
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password: secret
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server: lb.mydomain.com
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user: admin
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validate_certs: no
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delegate_to: localhost
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'''
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RETURN = r'''
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remote_port:
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description: New remote port of the remote syslog server.
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returned: changed
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type: int
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sample: 514
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local_ip:
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description: The new local IP of the remote syslog server
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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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import re
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.six import iteritems
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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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import netaddr
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HAS_NETADDR = True
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except ImportError:
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HAS_NETADDR = False
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class Parameters(AnsibleF5Parameters):
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updatables = [
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'remote_port', 'local_ip', 'remoteServers'
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]
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returnables = [
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'remote_port', 'local_ip'
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]
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api_attributes = [
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'remoteServers'
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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 remote_host(self):
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try:
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# Check for valid IPv4 or IPv6 entries
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netaddr.IPAddress(self._values['remote_host'])
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return self._values['remote_host']
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except netaddr.core.AddrFormatError:
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# else fallback to checking reasonably well formatted hostnames
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if self.is_valid_hostname(self._values['remote_host']):
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return str(self._values['remote_host'])
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raise F5ModuleError(
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"The provided 'remote_host' is not a valid IP or hostname"
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)
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def is_valid_hostname(self, host):
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"""Reasonable attempt at validating a hostname
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Compiled from various paragraphs outlined here
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https://tools.ietf.org/html/rfc3696#section-2
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https://tools.ietf.org/html/rfc1123
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Notably,
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* Host software MUST handle host names of up to 63 characters and
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SHOULD handle host names of up to 255 characters.
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* The "LDH rule", after the characters that it permits. (letters, digits, hyphen)
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* If the hyphen is used, it is not permitted to appear at
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either the beginning or end of a label
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:param host:
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:return:
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"""
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if len(host) > 255:
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return False
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host = host.rstrip(".")
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allowed = re.compile(r'(?!-)[A-Z0-9-]{1,63}(?<!-)$', re.IGNORECASE)
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return all(allowed.match(x) for x in host.split("."))
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@property
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def remote_port(self):
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if self._values['remote_port'] is None:
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return None
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if self._values['remote_port'] == 0:
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raise F5ModuleError(
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"The 'remote_port' value must between 1 and 65535"
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)
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return int(self._values['remote_port'])
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@property
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def local_ip(self):
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if self._values['local_ip'] in [None, 'none']:
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return None
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try:
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ip = netaddr.IPAddress(self._values['local_ip'])
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return str(ip)
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except netaddr.core.AddrFormatError:
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raise F5ModuleError(
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"The provided 'local_ip' is not a valid IP address"
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)
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class Changes(Parameters):
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@property
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def remote_port(self):
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return self._values['remote_port']
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@property
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def local_ip(self):
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return self._values['local_ip']
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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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self._local_ip = None
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self._remote_port = None
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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 remoteServers(self):
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"""Return changed list of remote servers
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The order of this list does not matter as BIG-IP will send to all the
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items in it.
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:return:
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"""
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changed = False
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if self.want.remote_host is None:
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return None
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if self.have.remoteServers is None:
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remote = dict()
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else:
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remote = self.have.remoteServers
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current_hosts = dict((d['host'], d) for (i, d) in enumerate(remote))
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if self.want.state == 'absent':
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del current_hosts[self.want.remote_host]
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result = [v for (k, v) in iteritems(current_hosts)]
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return result
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if self.want.remote_host in current_hosts:
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item = current_hosts[self.want.remote_host]
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if self.want.remote_port is not None:
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if int(item['remotePort']) != self.want.remote_port:
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item['remotePort'] = self.want.remote_port
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self._remote_port = self.want.remote_port
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changed = True
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if self.want.local_ip is not None:
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if item['localIp'] != self.want.local_ip:
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item['localIp'] = self.want.local_ip
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self._local_ip = self.want.local_ip
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changed = True
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else:
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changed = True
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count = len(current_hosts.keys()) + 1
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host = self.want.remote_host
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current_hosts[self.want.remote_host] = dict(
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name="/Common/remotesyslog{0}".format(count),
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host=host
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)
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if self.want.remote_port is not None:
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current_hosts[host]['remotePort'] = self.want.remote_port
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self._remote_port = self.want.remote_port
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if self.want.local_ip is not None:
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current_hosts[host]['localIp'] = self.want.local_ip
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self._local_ip = self.want.local_ip
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if changed:
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result = [v for (k, v) in iteritems(current_hosts)]
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return result
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return None
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@property
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def remote_port(self):
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_ = self.remoteServers
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if self._remote_port:
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return self._remote_port
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@property
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def local_ip(self):
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_ = self.remoteServers
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if self._local_ip:
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return self._local_ip
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class ModuleManager(object):
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def __init__(self, *args, **kwargs):
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self.module = kwargs.get('module', None)
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self.client = kwargs.get('client', None)
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self.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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self.changes.update({'remote_host': self.want.remote_host})
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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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self.changes.update({'remote_host': self.want.remote_host})
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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 == "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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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 create(self):
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self._set_valid_defaults()
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self._update_changed_options()
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if self.module.check_mode:
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return True
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# This is an unnamed resource, so we only need to update
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self.update_on_device()
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return True
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def _set_valid_defaults(self):
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if self.changes.local_ip is None:
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self.changes.update({'local_ip': None})
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if self.changes.remote_port is None:
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self.changes.update({'remote_port': 514})
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remote_servers = [
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dict(
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name='/{0}/remotesyslog1'.format(self.want.partition),
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host=self.want.remote_host,
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localIp=self.changes.local_ip,
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remotePort=self.changes.remote_port
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)
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]
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self.changes.update({'remoteServers': remote_servers})
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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 exists(self):
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self.have = self.read_current_from_device()
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if self.have.remoteServers is None:
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return False
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for server in self.have.remoteServers:
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if server['host'] == self.want.remote_host:
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return True
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def update_on_device(self):
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params = self.changes.api_params()
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result = self.client.api.tm.sys.syslog.load()
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result.modify(**params)
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def read_current_from_device(self):
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resource = self.client.api.tm.sys.syslog.load()
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attrs = resource.attrs
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result = Parameters(attrs)
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return result
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def absent(self):
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if self.exists():
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return self.remove()
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return False
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def remove(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 remote syslog.")
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return True
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def remove_from_device(self):
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self._update_changed_options()
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params = self.changes.api_params()
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result = self.client.api.tm.sys.syslog.load()
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result.modify(**params)
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class ArgumentSpec(object):
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def __init__(self):
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self.supports_check_mode = True
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argument_spec = dict(
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remote_host=dict(
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required=True
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),
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remote_port=dict(),
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local_ip=dict(),
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state=dict(
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default='present',
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choices=['absent', 'present']
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)
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)
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self.argument_spec = {}
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self.argument_spec.update(f5_argument_spec)
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self.argument_spec.update(argument_spec)
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def main():
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spec = ArgumentSpec()
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module = AnsibleModule(
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argument_spec=spec.argument_spec,
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supports_check_mode=spec.supports_check_mode
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)
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if not HAS_F5SDK:
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module.fail_json(msg="The python f5-sdk module is required")
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if not HAS_NETADDR:
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module.fail_json(msg="The python netaddr module is required")
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try:
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client = F5Client(**module.params)
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mm = ModuleManager(module=module, client=client)
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results = mm.exec_module()
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cleanup_tokens(client)
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module.exit_json(**results)
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except F5ModuleError as ex:
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cleanup_tokens(client)
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module.fail_json(msg=str(ex))
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if __name__ == '__main__':
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main()
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