Adding nxos_udld
This commit is contained in:
GGabriele
Matt Clay
parent
c45e596159
commit
29ea186bd7
1 changed files with 502 additions and 0 deletions
502
lib/ansible/modules/network/nxos/nxos_udld.py
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502
lib/ansible/modules/network/nxos/nxos_udld.py
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#!/usr/bin/python
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#
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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#
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DOCUMENTATION = '''
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---
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module: nxos_udld
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version_added: "2.2"
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short_description: Manages UDLD global configuration params.
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description:
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- Manages UDLD global configuration params.
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extends_documentation_fragment: nxos
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author:
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- Jason Edelman (@jedelman8)
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notes:
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- When C(state=absent), it unconfigures existing setings C(msg_time) and set it
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to its default value of 15. It is cleaner to always use C(state=present).
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- Module will fail if the udld feature has not been previously enabled.
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options:
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aggressive:
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description:
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- Toggles aggressive mode.
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required: false
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default: null
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choices: ['enabled','disabled']
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msg_time:
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description:
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- Message time in seconds for UDLD packets.
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required: false
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default: null
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reset:
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description:
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- Ability to reset UDLD down interfaces.
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required: false
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default: null
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choices: ['true','false']
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state:
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description:
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- Manage the state of the resource.
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required: false
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default: present
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choices: ['present','absent']
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'''
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EXAMPLES = '''
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# ensure udld aggressive mode is globally disabled and se global message interval is 20
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- nxos_udld:
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aggressive=disabled
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msg_time=20
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host={{ inventory_hostname }}
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username={{ un }}
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password={{ pwd }}
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# Ensure agg mode is globally enabled and msg time is 15
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- nxos_udld:
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aggressive=enabled
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msg_time=15
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host={{ inventory_hostname }}
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username={{ un }}
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password={{ pwd }}
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'''
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RETURN = '''
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proposed:
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description: k/v pairs of parameters passed into module
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returned: always
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type: dict
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sample: {"aggressive": "enabled", "msg_time": "40"}
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existing:
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description:
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- k/v pairs of existing udld configuration
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type: dict
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sample: {"aggressive": "disabled", "msg_time": "15"}
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end_state:
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description: k/v pairs of udld configuration after module execution
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returned: always
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type: dict
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sample: {"aggressive": "enabled", "msg_time": "40"}
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updates:
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description: command sent to the device
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returned: always
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type: list
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sample: ["udld message-time 40", "udld aggressive"]
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changed:
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description: check to see if a change was made on the device
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returned: always
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type: boolean
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sample: true
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'''
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import json
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# COMMON CODE FOR MIGRATION
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import re
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from ansible.module_utils.basic import get_exception
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from ansible.module_utils.netcfg import NetworkConfig, ConfigLine
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from ansible.module_utils.shell import ShellError
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try:
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from ansible.module_utils.nxos import get_module
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except ImportError:
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from ansible.module_utils.nxos import NetworkModule
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def to_list(val):
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if isinstance(val, (list, tuple)):
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return list(val)
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elif val is not None:
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return [val]
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else:
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return list()
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class CustomNetworkConfig(NetworkConfig):
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def expand_section(self, configobj, S=None):
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if S is None:
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S = list()
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S.append(configobj)
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for child in configobj.children:
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if child in S:
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continue
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self.expand_section(child, S)
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return S
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def get_object(self, path):
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for item in self.items:
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if item.text == path[-1]:
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parents = [p.text for p in item.parents]
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if parents == path[:-1]:
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return item
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def to_block(self, section):
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return '\n'.join([item.raw for item in section])
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def get_section(self, path):
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try:
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section = self.get_section_objects(path)
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return self.to_block(section)
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except ValueError:
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return list()
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def get_section_objects(self, path):
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if not isinstance(path, list):
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path = [path]
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obj = self.get_object(path)
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if not obj:
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raise ValueError('path does not exist in config')
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return self.expand_section(obj)
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def add(self, lines, parents=None):
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"""Adds one or lines of configuration
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"""
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ancestors = list()
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offset = 0
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obj = None
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## global config command
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if not parents:
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for line in to_list(lines):
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item = ConfigLine(line)
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item.raw = line
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if item not in self.items:
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self.items.append(item)
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else:
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for index, p in enumerate(parents):
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try:
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i = index + 1
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obj = self.get_section_objects(parents[:i])[0]
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ancestors.append(obj)
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except ValueError:
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# add parent to config
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offset = index * self.indent
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obj = ConfigLine(p)
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obj.raw = p.rjust(len(p) + offset)
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if ancestors:
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obj.parents = list(ancestors)
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ancestors[-1].children.append(obj)
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self.items.append(obj)
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ancestors.append(obj)
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# add child objects
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for line in to_list(lines):
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# check if child already exists
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for child in ancestors[-1].children:
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if child.text == line:
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break
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else:
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offset = len(parents) * self.indent
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item = ConfigLine(line)
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item.raw = line.rjust(len(line) + offset)
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item.parents = ancestors
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ancestors[-1].children.append(item)
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self.items.append(item)
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def get_network_module(**kwargs):
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try:
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return get_module(**kwargs)
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except NameError:
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return NetworkModule(**kwargs)
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def get_config(module, include_defaults=False):
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config = module.params['config']
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if not config:
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try:
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config = module.get_config()
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except AttributeError:
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defaults = module.params['include_defaults']
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config = module.config.get_config(include_defaults=defaults)
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return CustomNetworkConfig(indent=2, contents=config)
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def load_config(module, candidate):
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config = get_config(module)
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commands = candidate.difference(config)
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commands = [str(c).strip() for c in commands]
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save_config = module.params['save']
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result = dict(changed=False)
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if commands:
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if not module.check_mode:
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try:
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module.configure(commands)
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except AttributeError:
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module.config(commands)
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if save_config:
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try:
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module.config.save_config()
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except AttributeError:
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module.execute(['copy running-config startup-config'])
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result['changed'] = True
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result['updates'] = commands
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return result
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# END OF COMMON CODE
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def execute_config_command(commands, module):
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try:
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module.configure(commands)
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except ShellError:
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clie = get_exception()
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module.fail_json(msg='Error sending CLI commands',
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error=str(clie), commands=commands)
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except AttributeError:
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try:
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commands.insert(0, 'configure')
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module.cli.add_commands(commands, output='config')
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module.cli.run_commands()
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except ShellError:
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clie = get_exception()
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module.fail_json(msg='Error sending CLI commands',
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error=str(clie), commands=commands)
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def get_cli_body_ssh(command, response, module):
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"""Get response for when transport=cli. This is kind of a hack and mainly
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needed because these modules were originally written for NX-API. And
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not every command supports "| json" when using cli/ssh. As such, we assume
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if | json returns an XML string, it is a valid command, but that the
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resource doesn't exist yet. Instead, the output will be a raw string
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when issuing commands containing 'show run'.
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"""
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if 'xml' in response[0] or response[0] == '\n':
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body = []
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elif 'show run' in command:
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body = response
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else:
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try:
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if isinstance(response[0], str):
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body = [json.loads(response[0])]
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else:
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body = response
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except ValueError:
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module.fail_json(msg='Command does not support JSON output',
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command=command)
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return body
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def execute_show(cmds, module, command_type=None):
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command_type_map = {
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'cli_show': 'json',
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'cli_show_ascii': 'text'
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}
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try:
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if command_type:
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response = module.execute(cmds, command_type=command_type)
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else:
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response = module.execute(cmds)
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except ShellError:
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clie = get_exception()
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module.fail_json(msg='Error sending {0}'.format(cmds),
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error=str(clie))
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except AttributeError:
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try:
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if command_type:
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command_type = command_type_map.get(command_type)
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module.cli.add_commands(cmds, output=command_type)
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response = module.cli.run_commands()
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else:
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module.cli.add_commands(cmds)
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response = module.cli.run_commands()
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except ShellError:
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clie = get_exception()
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module.fail_json(msg='Error sending {0}'.format(cmds),
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error=str(clie))
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return response
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def execute_show_command(command, module, command_type='cli_show'):
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if module.params['transport'] == 'cli':
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if 'show run' not in command:
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command += ' | json'
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cmds = [command]
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response = execute_show(cmds, module)
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body = get_cli_body_ssh(command, response, module)
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elif module.params['transport'] == 'nxapi':
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cmds = [command]
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body = execute_show(cmds, module, command_type=command_type)
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return body
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def flatten_list(command_lists):
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flat_command_list = []
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for command in command_lists:
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if isinstance(command, list):
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flat_command_list.extend(command)
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else:
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flat_command_list.append(command)
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return flat_command_list
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def apply_key_map(key_map, table):
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new_dict = {}
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for key, value in table.items():
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new_key = key_map.get(key)
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if new_key:
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value = table.get(key)
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if value:
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new_dict[new_key] = str(value)
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else:
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new_dict[new_key] = value
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return new_dict
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def get_commands_config_udld_global(delta, reset):
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config_args = {
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'enabled': 'udld aggressive',
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'disabled': 'no udld aggressive',
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'msg_time': 'udld message-time {msg_time}'
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}
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commands = []
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for param, value in delta.iteritems():
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if param == 'aggressive':
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if value == 'enabled':
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command = 'udld aggressive'
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elif value == 'disabled':
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command = 'no udld aggressive'
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else:
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command = config_args.get(param, 'DNE').format(**delta)
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if command and command != 'DNE':
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commands.append(command)
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command = None
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if reset:
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command = 'udld reset'
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commands.append(command)
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return commands
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def get_commands_remove_udld_global(delta):
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config_args = {
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'aggressive': 'no udld aggressive',
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'msg_time': 'no udld message-time {msg_time}',
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}
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commands = []
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for param, value in delta.iteritems():
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command = config_args.get(param, 'DNE').format(**delta)
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if command and command != 'DNE':
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commands.append(command)
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command = None
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return commands
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def get_udld_global(module):
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command = 'show udld global'
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udld_table = execute_show_command(command, module)[0]
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status = str(udld_table.get('udld-global-mode', None))
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if status == 'enabled-aggressive':
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aggressive = 'enabled'
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else:
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aggressive = 'disabled'
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interval = str(udld_table.get('message-interval', None))
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udld = dict(msg_time=interval, aggressive=aggressive)
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return udld
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def main():
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argument_spec = dict(
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aggressive=dict(required=False, choices=['enabled', 'disabled']),
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msg_time=dict(required=False, type='str'),
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reset=dict(required=False, type='bool'),
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state=dict(choices=['absent', 'present'], default='present'),
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)
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module = get_network_module(argument_spec=argument_spec,
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required_one_of=[['aggressive', 'msg_time', 'reset']],
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supports_check_mode=True)
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aggressive = module.params['aggressive']
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msg_time = module.params['msg_time']
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reset = module.params['reset']
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state = module.params['state']
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if (aggressive or reset) and state == 'absent':
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module.fail_json(msg="It's better to use state=present when "
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"configuring or unconfiguring aggressive mode "
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"or using reset flag. state=absent is just for "
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"when using msg_time param.")
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if msg_time:
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try:
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msg_time_int = int(msg_time)
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if msg_time_int < 7 or msg_time_int > 90:
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raise ValueError
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except ValueError:
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module.fail_json(msg='msg_time must be an integer'
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'between 7 and 90')
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args = dict(aggressive=aggressive, msg_time=msg_time, reset=reset)
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proposed = dict((k, v) for k, v in args.iteritems() if v is not None)
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existing = get_udld_global(module)
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end_state = existing
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delta = set(proposed.iteritems()).difference(existing.iteritems())
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changed = False
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commands = []
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if state == 'present':
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if delta:
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command = get_commands_config_udld_global(dict(delta), reset)
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commands.append(command)
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elif state == 'absent':
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common = set(proposed.iteritems()).intersection(existing.iteritems())
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if common:
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command = get_commands_remove_udld_global(dict(common))
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commands.append(command)
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cmds = flatten_list(commands)
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if cmds:
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if module.check_mode:
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module.exit_json(changed=True, commands=cmds)
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else:
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changed = True
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execute_config_command(cmds, module)
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end_state = get_udld_global(module)
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results = {}
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results['proposed'] = proposed
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results['existing'] = existing
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results['end_state'] = end_state
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results['updates'] = cmds
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results['changed'] = changed
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module.exit_json(**results)
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if __name__ == '__main__':
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main()
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