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#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2017, Ansible by Red Hat, inc
#
# This file is part of Ansible by Red Hat
#
# 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_vrf
version_added: "2.4"
author: "Ricardo Carrillo Cruz (@rcarrillocruz)"
short_description: Manage VRFs on Arista EOS network devices
description:
- This module provides declarative management of VRFs
on Arista EOS network devices.
notes:
- Tested against EOS 4.15
options:
name:
description:
- Name of the VRF.
required: true
rd:
description:
- Route distinguisher of the VRF
interfaces:
description:
- Identifies the set of interfaces that
should be configured in the VRF. Interfaces must be routed
interfaces in order to be placed into a VRF. The name of interface
should be in expanded format and not abbreviated.
associated_interfaces:
description:
- This is a intent option and checks the operational state of the for given vrf C(name)
for associated interfaces. If the value in the C(associated_interfaces) does not match with
the operational state of vrf interfaces on device it will result in failure.
version_added: "2.5"
aggregate:
description: List of VRFs definitions
purge:
description:
- Purge VRFs not defined in the I(aggregate) parameter.
default: no
delay:
description:
- Time in seconds to wait before checking for the operational state on remote
device. This wait is applicable for operational state arguments.
default: 10
state:
description:
- State of the VRF configuration.
default: present
choices: ['present', 'absent']
extends_documentation_fragment: eos
"""
EXAMPLES = """
- name: Create vrf
eos_vrf:
name: test
rd: 1:200
interfaces:
- Ethernet2
state: present
- name: Delete VRFs
eos_vrf:
name: test
state: absent
- name: Create aggregate of VRFs with purge
eos_vrf:
aggregate:
- { name: test4, rd: "1:204" }
- { name: test5, rd: "1:205" }
state: present
purge: yes
- name: Delete aggregate of VRFs
eos_vrf:
aggregate:
- name: test2
- name: test3
- name: test4
- name: test5
state: absent
"""
RETURN = """
commands:
description: The list of configuration mode commands to send to the device
returned: always
type: list
sample:
- vrf definition test
- rd 1:100
- interface Ethernet1
- vrf forwarding test
"""
import re
import time
from copy import deepcopy
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.network.common.utils import remove_default_spec
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
def search_obj_in_list(name, lst):
for o in lst:
if o['name'] == name:
return o
def map_obj_to_commands(updates, module):
commands = list()
want, have = updates
state = module.params['state']
purge = module.params['purge']
for w in want:
name = w['name']
rd = w['rd']
interfaces = w['interfaces']
obj_in_have = search_obj_in_list(name, have)
if state == 'absent':
if obj_in_have:
commands.append('no vrf definition %s' % name)
elif state == 'present':
if not obj_in_have:
commands.append('vrf definition %s' % name)
if rd is not None:
commands.append('rd %s' % rd)
if w['interfaces']:
for i in w['interfaces']:
commands.append('interface %s' % i)
commands.append('vrf forwarding %s' % w['name'])
else:
if w['rd'] is not None and w['rd'] != obj_in_have['rd']:
commands.append('vrf definition %s' % w['name'])
commands.append('rd %s' % w['rd'])
if w['interfaces']:
if not obj_in_have['interfaces']:
for i in w['interfaces']:
commands.append('interface %s' % i)
commands.append('vrf forwarding %s' % w['name'])
elif set(w['interfaces']) != obj_in_have['interfaces']:
missing_interfaces = list(set(w['interfaces']) - set(obj_in_have['interfaces']))
for i in missing_interfaces:
commands.append('interface %s' % i)
commands.append('vrf forwarding %s' % w['name'])
if purge:
for h in have:
obj_in_want = search_obj_in_list(h['name'], want)
if not obj_in_want:
commands.append('no vrf definition %s' % h['name'])
return commands
def map_config_to_obj(module):
objs = []
output = run_commands(module, ['show vrf'])
lines = output[0].strip().splitlines()[3:]
out_len = len(lines)
index = 0
while out_len > index:
line = lines[index]
if not line:
continue
splitted_line = re.split(r'\s{2,}', line.strip())
if len(splitted_line) == 1:
index += 1
continue
else:
obj = dict()
obj['name'] = splitted_line[0]
obj['rd'] = splitted_line[1]
obj['interfaces'] = []
if len(splitted_line) > 4:
obj['interfaces'] = []
interfaces = splitted_line[4]
if interfaces.endswith(','):
while interfaces.endswith(','):
# gather all comma separated interfaces
if out_len <= index:
break
index += 1
line = lines[index]
vrf_line = re.split(r'\s{2,}', line.strip())
interfaces += vrf_line[-1]
for i in interfaces.split(','):
obj['interfaces'].append(i.strip().lower())
index += 1
objs.append(obj)
return objs
def map_params_to_obj(module):
obj = []
aggregate = module.params.get('aggregate')
if aggregate:
for item in aggregate:
for key in item:
if item.get(key) is None:
item[key] = module.params[key]
if item.get('interfaces'):
item['interfaces'] = [intf.replace(" ", "").lower() for intf in item.get('interfaces') if intf]
if item.get('associated_interfaces'):
item['associated_interfaces'] = [intf.replace(" ", "").lower() for intf in item.get('associated_interfaces') if intf]
obj.append(item.copy())
else:
obj.append({
'name': module.params['name'],
'state': module.params['state'],
'rd': module.params['rd'],
'interfaces': [intf.replace(" ", "").lower() for intf in module.params['interfaces']] if module.params['interfaces'] else [],
'associated_interfaces': [intf.replace(" ", "").lower() for intf in
module.params['associated_interfaces']] if module.params['associated_interfaces'] else []
})
return obj
def check_declarative_intent_params(want, module, result):
have = None
is_delay = False
for w in want:
if w.get('associated_interfaces') is None:
continue
if result['changed'] and not is_delay:
time.sleep(module.params['delay'])
is_delay = True
if have is None:
have = map_config_to_obj(module)
for i in w['associated_interfaces']:
obj_in_have = search_obj_in_list(w['name'], have)
if obj_in_have:
interfaces = obj_in_have.get('interfaces')
if interfaces is not None and i not in interfaces:
module.fail_json(msg="Interface %s not configured on vrf %s" % (i, w['name']))
def main():
""" main entry point for module execution
"""
element_spec = dict(
name=dict(),
interfaces=dict(type='list'),
associated_interfaces=dict(type='list'),
delay=dict(default=10, type='int'),
rd=dict(),
state=dict(default='present', choices=['present', 'absent'])
)
aggregate_spec = deepcopy(element_spec)
# remove default in aggregate spec, to handle common arguments
remove_default_spec(aggregate_spec)
argument_spec = dict(
aggregate=dict(type='list', elements='dict', options=aggregate_spec),
purge=dict(default=False, type='bool')
)
argument_spec.update(element_spec)
argument_spec.update(eos_argument_spec)
required_one_of = [['name', 'aggregate']]
mutually_exclusive = [['name', 'aggregate']]
module = AnsibleModule(argument_spec=argument_spec,
required_one_of=required_one_of,
mutually_exclusive=mutually_exclusive,
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
check_declarative_intent_params(want, module, result)
module.exit_json(**result)
if __name__ == '__main__':
main()
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