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ansible/network/eos/eos_config.py
Peter Sprygada 87dc24b19e roll up of minor fixes in eos_config module 
* fixes save argument to be type bool
* now properly sets the changed returned flag based on diff
* updates docstring RETURNS to add backup_path
* removes unneeded state argument

tested on EOS 4.15.4F
2016-09-07 14:24:08 -04:00

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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/>.
#
DOCUMENTATION = """
---
module: eos_config
version_added: "2.1"
author: "Peter Sprygada (@privateip)"
short_description: Manage Arista EOS configuration sections
description:
- Arista EOS configurations use a simple block indent file syntax
for segmenting configuration into sections. This module provides
an implementation for working with eos configuration sections in
a deterministic way. This module works with either CLI or eAPI
transports.
extends_documentation_fragment: eos
options:
lines:
description:
- The ordered set of commands that should be configured in the
section. The commands must be the exact same commands as found
in the device running-config. Be sure to note the configuration
command syntax as some commands are automatically modified by the
device config parser.
required: false
default: null
parents:
description:
- The ordered set of parents that uniquely identify the section
the commands should be checked against. If the parents argument
is omitted, the commands are checked against the set of top
level or global commands.
required: false
default: null
src:
description:
- The I(src) argument provides a path to the configuration file
to load into the remote system. The path can either be a full
system path to the configuration file if the value starts with /
or relative to the root of the implemented role or playbook.
This arugment is mutually exclusive with the I(lines) and
I(parents) arguments.
required: false
default: null
version_added: "2.2"
before:
description:
- The ordered set of commands to push on to the command stack if
a change needs to be made. This allows the playbook designer
the opportunity to perform configuration commands prior to pushing
any changes without affecting how the set of commands are matched
against the system.
required: false
default: null
after:
description:
- The ordered set of commands to append to the end of the command
stack if a changed needs to be made. Just like with I(before) this
allows the playbook designer to append a set of commands to be
executed after the command set.
required: false
default: null
match:
description:
- Instructs the module on the way to perform the matching of
the set of commands against the current device config. If
match is set to I(line), commands are matched line by line. If
match is set to I(strict), command lines are matched with respect
to position. Finally if match is set to I(exact), command lines
must be an equal match.
required: false
default: line
choices: ['line', 'strict', 'exact', 'none']
replace:
description:
- Instructs the module on the way to perform the configuration
on the device. If the replace argument is set to I(line) then
the modified lines are pushed to the device in configuration
mode. If the replace argument is set to I(block) then the entire
command block is pushed to the device in configuration mode if any
line is not correct.
required: false
default: line
choices: ['line', 'block']
force:
description:
- The force argument instructs the module to not consider the
current devices running-config. When set to true, this will
cause the module to push the contents of I(src) into the device
without first checking if already configured.
- Note this argument should be considered deprecated. To achieve
the equivalient, set the match argument to none. This argument
will be removed in a future release.
required: false
default: false
choices: ['yes', 'no']
update:
description:
- The I(update) argument controls how the configuration statements
are processed on the remote device. Valid choices for the I(update)
argument are I(merge) I(replace) and I(check). When the argument is
set to I(merge), the configuration changes are merged with the current
device running configuration. When the argument is set to I(check)
the configuration updates are determined but not actually configured
on the remote device.
required: false
default: merge
choices: ['merge', 'replace', 'check']
version_added: "2.2"
config:
description:
- The module, by default, will connect to the remote device and
retrieve the current running-config to use as a base for comparing
against the contents of source. There are times when it is not
desirable to have the task get the current running-config for
every task in a playbook. The I(config) argument allows the
implementer to pass in the configuration to use as the base
config for comparison.
required: false
default: null
defaults:
description:
- The I(defaults) argument will influence how the running-config
is collected from the device. When the value is set to true,
the command used to collect the running-config is append with
the all keyword. When the value is set to false, the command
is issued without the all keyword
required: false
default: false
version_added: "2.2"
save:
description:
- The I(save) argument will instruct the module to save the
running-config to startup-config. This operation is performed
after any changes are made to the current running config. If
no changes are made, the configuration is still saved to the
startup config. This option will always cause the module to
return changed.
required: false
default: false
version_added: "2.2"
"""
EXAMPLES = """
# Note: examples below use the following provider dict to handle
# transport and authentication to the node.
vars:
cli:
host: "{{ inventory_hostname }}"
username: admin
password: admin
transport: cli
- eos_config:
lines: hostname {{ inventory_hostname }}
provider: "{{ cli }}"
- eos_config:
lines:
- 10 permit ip 1.1.1.1/32 any log
- 20 permit ip 2.2.2.2/32 any log
- 30 permit ip 3.3.3.3/32 any log
- 40 permit ip 4.4.4.4/32 any log
- 50 permit ip 5.5.5.5/32 any log
parents: ip access-list test
before: no ip access-list test
match: exact
provider: "{{ cli }}"
- eos_config:
lines:
- 10 permit ip 1.1.1.1/32 any log
- 20 permit ip 2.2.2.2/32 any log
- 30 permit ip 3.3.3.3/32 any log
- 40 permit ip 4.4.4.4/32 any log
parents: ip access-list test
before: no ip access-list test
replace: block
provider: "{{ cli }}"
"""
RETURN = """
updates:
description: The set of commands that will be pushed to the remote device
returned: always
type: list
sample: ['...', '...']
backup_path:
description: The full path to the backup file
returned: when backup is yes
type: path
sample: /playbooks/ansible/backup/eos_config.2016-07-16@22:28:34
"""
import time
from ansible.module_utils.netcfg import NetworkConfig, dumps
from ansible.module_utils.eos import NetworkModule, NetworkError
from ansible.module_utils.basic import get_exception
def check_args(module, warnings):
if module.params['save'] and module.check_mode:
warnings.append('will not save configuration due to checkmode')
if module.params['parents'] and module.params['src']:
warnings.append('ignoring parents argument when src specified')
if module.params['force']:
warnings.append('The force argument is deprecated, please use '
'match=none instead. This argument will be '
'removed in the future')
def get_candidate(module):
candidate = NetworkConfig(indent=3)
if module.params['src']:
candidate.load(module.params['src'])
elif module.params['lines']:
parents = module.params['parents'] or list()
candidate.add(module.params['lines'], parents=parents)
return candidate
def get_config(module, result, defaults=False):
defaults = module.params['defaults']
if defaults is True:
key = '__configall__'
else:
key = '__config__'
contents = module.params['config'] or result.get(key)
if not contents:
contents = module.config.get_config(include_defaults=defaults)
result[key] = contents
return NetworkConfig(indent=3, contents=contents)
def backup_config(module, result):
if '__config__' not in result:
result['__config__'] = module.config.get_config()
result['__backup__'] = result['__config__']
def load_config(module, commands, result):
session = 'ansible_%s' % int(time.time())
# save the sesion name in case we need later
result['__session__'] = session
replace = module.params['update'] == 'replace'
commit = not module.check_mode
diff = module.config.load_config(commands, session=session,
replace=replace, commit=commit)
# once the configuration is done, remove the config session and
# remove the session name from the result
module.cli(['no configure session %s' % session])
del result['__session__']
result['diff'] = dict(prepared=diff)
if diff:
result['changed'] = True
def run(module, result):
match = module.params['match']
replace = module.params['replace']
update = module.params['update']
candidate = get_candidate(module)
if match != 'none' and update != 'replace':
config = get_config(module, result)
configobjs = candidate.difference(config, match=match, replace=replace)
else:
config = None
configobjs = candidate.items
if configobjs:
commands = dumps(configobjs, 'commands').split('\n')
if module.params['before']:
commands[:0] = module.params['before']
if module.params['after']:
commands.extend(module.params['after'])
result['updates'] = commands
if update != 'check':
load_config(module, commands, result)
if module.params['save'] and not module.check_mode:
module.config.save_config()
def main():
""" main entry point for module execution
"""
argument_spec = dict(
lines=dict(aliases=['commands'], type='list'),
parents=dict(type='list'),
src=dict(type='path'),
before=dict(type='list'),
after=dict(type='list'),
match=dict(default='line', choices=['line', 'strict', 'exact', 'none']),
replace=dict(default='line', choices=['line', 'block']),
# this argument is deprecated in favor of setting match: none
# it will be removed in a future version
force=dict(default=False, type='bool'),
update=dict(choices=['merge', 'replace', 'check'], default='merge'),
backup=dict(type='bool', default=False),
config=dict(),
defaults=dict(type='bool', default=False),
save=dict(default=False, type='bool'),
)
mutually_exclusive = [('lines', 'src')]
module = NetworkModule(argument_spec=argument_spec,
connect_on_load=False,
mutually_exclusive=mutually_exclusive,
supports_check_mode=True)
if module.params['force'] is True:
module.params['match'] = 'none'
warnings = list()
check_args(module, warnings)
result = dict(changed=False, warnings=warnings)
if module.params['backup']:
result['__backup__'] = backup_config(module, result)
try:
run(module, result)
except NetworkError:
exc = get_exception()
module.fail_json(msg=str(exc))
module.exit_json(**result)
if __name__ == '__main__':
main()
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