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#!/usr/bin/python
# -*- coding: utf-8 -*-
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
#
# Copyright (C) 2017 Lenovo, Inc.
#
# 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/>.
#
# Module to send conditional template to Lenovo Switches
# Lenovo Networking
#
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'community'}
DOCUMENTATION = '''
---
module: cnos_conditional_template
author: "Anil Kumar Muraleedharan (@amuraleedhar)"
short_description: Manage switch configuration using templates based on
condition on devices running Lenovo CNOS
description:
- This module allows you to work with the running configuration of a
switch. It provides a way to execute a set of CNOS commands on a switch by
evaluating the current running configuration and executing the commands
only if the specific settings have not been already configured.
The configuration source can be a set of commands or a template written in
the Jinja2 templating language. This module functions the same as the
cnos_template module. The only exception is that the following inventory
variable can be specified.
["condition = <flag string>"]
When this inventory variable is specified as the variable of a task, the
template is executed for the network element that matches the flag string.
Usually, templates are used when commands are the same across a group of
network devices. When there is a requirement to skip the execution of the
template on one or more devices, it is recommended to use this module.
This module uses SSH to manage network device configuration.
version_added: "2.3"
extends_documentation_fragment: cnos
options:
commandfile:
description:
- This specifies the path to the CNOS command file which needs to
be applied. This usually comes from the commands folder. Generally
this file is the output of the variables applied on a template
file. So this command is preceded by a template module. The
command file must contain the Ansible keyword
{{ inventory_hostname }} and the condition flag in its filename to
ensure that the command file is unique for each switch and
condition. If this is omitted, the command file will be
overwritten during iteration. For example,
commandfile=./commands/clos_leaf_bgp_
{{ inventory_hostname }}_LP21_commands.txt
required: true
default: Null
condition:
description:
- If you specify condition=<flag string> in the inventory file
against any device, the template execution is done for that device
in case it matches the flag setting for that task.
required: true
default: Null
flag:
description:
- If a task needs to be executed, you have to set the flag the same
as it is specified in the inventory for that device.
required: true
default: Null
'''
EXAMPLES = '''
Tasks : The following are examples of using the module
cnos_conditional_template. These are written in the main.yml file of the
tasks directory.
---
- name: Applying CLI template on VLAG Tier1 Leaf Switch1
cnos_conditional_template:
deviceType: "{{ hostvars[inventory_hostname]['deviceType'] }}"
outputfile: "./results/vlag_1tier_leaf_switch1_
{{ inventory_hostname }}_output.txt"
condition: "{{ hostvars[inventory_hostname]['condition']}}"
flag: "leaf_switch1"
commandfile: "./commands/vlag_1tier_leaf_switch1_
{{ inventory_hostname }}_commands.txt"
stp_mode1: "disable"
port_range1: "17,18,29,30"
portchannel_interface_number1: 1001
portchannel_mode1: active
slot_chassis_number1: 1/48
switchport_mode1: trunk
'''
RETURN = '''
msg:
description: Success or failure message
returned: always
type: str
sample: "Template Applied."
'''
import sys
import time
import socket
import array
import json
import time
import re
import os
try:
from ansible.module_utils.network.cnos import cnos
HAS_LIB = True
except Exception:
HAS_LIB = False
from ansible.module_utils.basic import AnsibleModule
from collections import defaultdict
def main():
module = AnsibleModule(
argument_spec=dict(
commandfile=dict(required=True),
outputfile=dict(required=True),
condition=dict(required=True),
flag=dict(required=True),
host=dict(required=False),
deviceType=dict(required=True),
username=dict(required=False),
password=dict(required=False, no_log=True),
enablePassword=dict(required=False, no_log=True),),
supports_check_mode=False)
condition = module.params['condition']
flag = module.params['flag']
commandfile = module.params['commandfile']
outputfile = module.params['outputfile']
output = ''
if (condition is None or condition != flag):
module.exit_json(changed=True, msg="Template Skipped for this switch")
return " "
# Send commands one by one
f = open(commandfile, "r")
cmd = []
for line in f:
# Omit the comment lines in template file
if not line.startswith("#"):
# cnos.debugOutput(line)
command = line.strip()
inner_cmd = [{'command': command, 'prompt': None, 'answer': None}]
cmd.extend(inner_cmd)
# Write to memory
save_cmd = [{'command': 'save', 'prompt': None, 'answer': None}]
cmd.extend(save_cmd)
output = output + str(cnos.run_cnos_commands(module, cmd))
# Write output to file
path = outputfile.rsplit('/', 1)
# cnos.debugOutput(path[0])
if not os.path.exists(path[0]):
os.makedirs(path[0])
file = open(outputfile, "a")
file.write(output)
file.close()
# Logic to check when changes occur or not
errorMsg = cnos.checkOutputForError(output)
if(errorMsg is None):
module.exit_json(changed=True, msg="Template Applied")
else:
module.fail_json(msg=errorMsg)
if __name__ == '__main__':
main()
|
