ansible/network/junos/junos_template.py

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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: junos_template
version_added: "2.1"
author: "Peter sprygada (@privateip)"
short_description: Manage Juniper JUNOS device configurations
description:
- Manages network device configurations over SSH. This module
allows implementors to work with the device configuration. It
provides a way to push a set of commands onto a network device
by evaluting the current configuration and only pushing
commands that are not already configured.
extends_documentation_fragment: junos
options:
src:
description:
- The path to the config source. The source can be either a
file with config or a template that will be merged during
runtime. By default the task will search for the source
file in role or playbook root folder in templates directory.
required: false
default: null
force:
description:
- The force argument instructs the module to not consider the
current devices configuration. 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.
required: false
default: false
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choices: [ "true", "false" ]
backup:
description:
- When this argument is configured true, the module will backup
the configuration from the node prior to making any changes.
The backup file will be written to backup_{{ hostname }} in
the root of the playbook directory.
required: false
default: false
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choices: [ "true", "false" ]
config:
description:
- The module, by default, will connect to the remote device and
retrieve the current configuration 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 configuration for
every task in a playbook. The I(config) argument allows the
implementer to pass in the configuruation to use as the base
config for comparision.
required: false
default: null
"""
EXAMPLES = """
- name: push a configuration onto the device
junos_template:
src: config.j2
- name: forceable push a configuration onto the device
junos_template:
src: config.j2
force: yes
- name: provide the base configuration for comparision
junos_template:
src: candidate_config.txt
config: current_config.txt
"""
RETURN = """
commands:
description: The set of commands that will be pushed to the remote device
returned: always
type: list
sample: [...]
"""
def compare(this, other):
parents = [item.text for item in this.parents]
for entry in other:
if this == entry:
return None
return this
def expand(obj, action='set'):
cmd = [action]
cmd.extend([p.text for p in obj.parents])
cmd.append(obj.text)
return ' '.join(cmd)
def flatten(data, obj):
for k, v in data.items():
obj.append(k)
flatten(v, obj)
return obj
def to_lines(config):
lines = list()
for item in config:
if item.raw.endswith(';'):
line = [p.text for p in item.parents]
line.append(item.text)
lines.append(' '.join(line))
return lines
def get_config(module):
config = module.params['config'] or list()
if not config and not module.params['force']:
config = module.config
return config
def main():
""" main entry point for module execution
"""
argument_spec = dict(
src=dict(),
force=dict(default=False, type='bool'),
backup=dict(default=False, type='bool'),
config=dict(),
)
mutually_exclusive = [('config', 'backup'), ('config', 'force')]
module = get_module(argument_spec=argument_spec,
mutually_exclusive=mutually_exclusive,
supports_check_mode=True)
result = dict(changed=False)
parsed = module.parse_config(module.params['src'])
commands = to_lines(parsed)
contents = get_config(module)
result['_backup'] = module.config
parsed = module.parse_config(contents)
config = to_lines(parsed)
candidate = list()
for item in commands:
if item not in config:
candidate.append('set %s' % item)
if candidate:
if not module.check_mode:
module.configure(candidate)
result['changed'] = True
result['updates'] = candidate
return module.exit_json(**result)
from ansible.module_utils.basic import *
from ansible.module_utils.shell import *
from ansible.module_utils.netcfg import *
from ansible.module_utils.junos import *
if __name__ == '__main__':
main()