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#!/usr/bin/python
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
#
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'network'}
DOCUMENTATION = """
---
module: eos_banner
version_added: "2.3"
author: "Peter Sprygada (@privateip)"
short_description: Manage multiline banners on Arista EOS devices
description:
- This will configure both login and motd banners on remote devices
running Arista EOS. It allows playbooks to add or remote
banner text from the active running configuration.
extends_documentation_fragment: eos
notes:
- Tested against EOS 4.15
options:
banner:
description:
- Specifies which banner that should be
configured on the remote device.
required: true
default: null
choices: ['login', 'motd']
text:
description:
- The banner text that should be
present in the remote device running configuration. This argument
accepts a multiline string. Requires I(state=present).
default: null
state:
description:
- Specifies whether or not the configuration is
present in the current devices active running configuration.
default: present
choices: ['present', 'absent']
"""
EXAMPLES = """
- name: configure the login banner
eos_banner:
banner: login
text: |
this is my login banner
that contains a multiline
string
state: present
- name: remove the motd banner
eos_banner:
banner: motd
state: absent
"""
RETURN = """
commands:
description: The list of configuration mode commands to send to the device
returned: always
type: list
sample:
- banner login
- this is my login banner
- that contains a multiline
- string
- EOF
session_name:
description: The EOS config session name used to load the configuration
returned: if changes
type: str
sample: ansible_1479315771
"""
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.network.eos.eos import load_config, run_commands
from ansible.module_utils.network.eos.eos import eos_argument_spec, check_args
from ansible.module_utils.six import string_types
from ansible.module_utils._text import to_text
def map_obj_to_commands(updates, module):
commands = list()
want, have = updates
state = module.params['state']
if state == 'absent' and have.get('text'):
if isinstance(have['text'], str):
commands.append('no banner %s' % module.params['banner'])
elif have['text'].get('loginBanner') or have['text'].get('motd'):
commands.append({'cmd': 'no banner %s' % module.params['banner']})
elif state == 'present':
if isinstance(have['text'], string_types):
if want['text'] != have['text']:
commands.append('banner %s' % module.params['banner'])
commands.extend(want['text'].strip().split('\n'))
commands.append('EOF')
else:
have_text = have['text'].get('loginBanner') or have['text'].get('motd')
if have_text:
have_text = have_text.strip()
if to_text(want['text']) != have_text or not have_text:
# For EAPI we need to construct a dict with cmd/input
# key/values for the banner
commands.append({'cmd': 'banner %s' % module.params['banner'],
'input': want['text'].strip('\n')})
return commands
def map_config_to_obj(module):
output = run_commands(module, ['show banner %s' % module.params['banner']])
obj = {'banner': module.params['banner'], 'state': 'absent'}
if output:
if module.params['transport'] == 'eapi':
# On EAPI we need to extract the banner text from dict key
# 'loginBanner'
if module.params['banner'] == 'login':
banner_response_key = 'loginBanner'
else:
banner_response_key = 'motd'
if isinstance(output[0], dict) and banner_response_key in output[0].keys():
obj['text'] = output[0]
else:
obj['text'] = output[0]
obj['state'] = 'present'
return obj
def map_params_to_obj(module):
text = module.params['text']
if text:
text = str(text).strip()
return {
'banner': module.params['banner'],
'text': text,
'state': module.params['state']
}
def main():
""" main entry point for module execution
"""
argument_spec = dict(
banner=dict(required=True, choices=['login', 'motd']),
text=dict(),
state=dict(default='present', choices=['present', 'absent'])
)
argument_spec.update(eos_argument_spec)
required_if = [('state', 'present', ('text',))]
module = AnsibleModule(argument_spec=argument_spec,
required_if=required_if,
supports_check_mode=True)
warnings = list()
check_args(module, warnings)
result = {'changed': False}
if warnings:
result['warnings'] = warnings
want = map_params_to_obj(module)
have = map_config_to_obj(module)
commands = map_obj_to_commands((want, have), module)
result['commands'] = commands
if commands:
commit = not module.check_mode
response = load_config(module, commands, commit=commit)
if response.get('diff') and module._diff:
result['diff'] = {'prepared': response.get('diff')}
result['session_name'] = response.get('session')
result['changed'] = True
module.exit_json(**result)
if __name__ == '__main__':
main()
|
