#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# Copyright (C) 2013, Arista Networks <netdevops@aristanetworks.com>
#
# This program 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.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
#
DOCUMENTATION = '''
---
module: arista_interface
version_added: "1.3"
author: Peter Sprygada
short_description: Manage physical Ethernet interfaces
requirements:
- Arista EOS 4.10
- Netdev extension for EOS
description:
- Manage physical Ethernet interface resources on Arista EOS network devices
options:
interface_id:
description:
- the full name of the interface
required: true
logging:
description:
- enables or disables the syslog facility for this module
required: false
default: false
choices: [ 'true', 'false', 'yes', 'no' ]
admin:
description:
- controls the operational state of the interface
required: false
choices: [ 'up', 'down' ]
description:
description:
- a single line text string describing the interface
required: false
mtu:
description:
- configureds the maximum transmission unit for the interface
required: false
default: 1500
speed:
description:
- sets the interface speed setting
required: false
default: 'auto'
choices: [ 'auto', '100m', '1g', '10g' ]
duplex:
description:
- sets the interface duplex setting
required: false
default: 'auto'
choices: [ 'auto', 'half', 'full' ]
notes:
- Requires EOS 4.10 or later
- The Netdev extension for EOS must be installed and active in the
available extensions (show extensions from the EOS CLI)
- See http://eos.aristanetworks.com for details
'''
EXAMPLES = '''
Example playbook entries using the arista_interface module to manage resource
state. Note that interface names must be the full interface name not shortcut
names (ie Ethernet, not Et1)
tasks:
- name: enable interface Ethernet 1
action: arista_interface interface_id=Ethernet1 admin=up speed=10g duplex=full logging=true
- name: set mtu on Ethernet 1
action: arista_interface interface_id=Ethernet1 mtu=1600 speed=10g duplex=full logging=true
- name: reset changes to Ethernet 1
action: arista_interface interface_id=Ethernet1 admin=down mtu=1500 speed=10g duplex=full logging=true
'''
import syslog
import json
class AristaInterface(object):
""" This is the base class for managing physcial Ethernet interface
resources in EOS network devices. This class acts as a wrapper around
the netdev extension in EOS. You must have the netdev extension
installed in order for this module to work properly.
The following commands are implemented in this module:
* netdev interface list
* netdev interface show
* netdev interface edit
* netdev interface delete
This module only allows for the management of physical Ethernet
interfaces.
"""
attributes = ['interface_id', 'admin', 'description', 'mtu', 'speed', 'duplex']
def __init__(self, module):
self.module = module
self.interface_id = module.params['interface_id']
self.admin = module.params['admin']
self.description = module.params['description']
self.mtu = module.params['mtu']
self.speed = module.params['speed']
self.duplex = module.params['duplex']
self.logging = module.params['logging']
@property
def changed(self):
""" The changed property provides a boolean response if the currently
loaded resouces has changed from the resource running in EOS.
Returns True if the object is not in sync
Returns False if the object is in sync.
"""
return len(self.updates()) > 0
def log(self, entry):
""" This method is responsible for sending log messages to the local
syslog.
"""
if self.logging:
syslog.openlog('ansible-%s' % os.path.basename(__file__))
syslog.syslog(syslog.LOG_NOTICE, entry)
def run_command(self, cmd):
""" Calls the Ansible module run_command method. This method will
directly return the results of the run_command method
"""
self.log(cmd)
return self.module.run_command(cmd.split())
def get(self):
""" This method will return a dictionary with the attributes of the
physical ethernet interface resource specified in interface_id.
The physcial ethernet interface resource has the following
stucture:
{
"interface_id": <interface_id>,
"description": <description>,
"admin": [up | down],
"mtu": <mtu>,
"speed": [auto | 100m | 1g | 10g]
"duplex": [auto | half | full]
}
If the physical ethernet interface specified by interface_id does
not exist in the system, this method will return None.
"""
cmd = "netdev interface show %s" % self.interface_id
(rc, out, err) = self.run_command(cmd)
obj = json.loads(out)
if obj.get('status') != 200:
return None
return obj['result']
def update(self):
""" Updates an existing physical ethernet resource in the current
running configuration. If the physical ethernet resource does
not exist, this method will return an error.
This method implements the following commands:
* netdev interface edit {interface_id} [attributes]
Returns an updated physical ethernet interafce resoure if the
update method was successful
"""
attribs = list()
for attrib in self.updates():
attribs.append("--%s" % attrib)
attribs.append(str(getattr(self, attrib)))
if attribs:
cmd = "netdev interface edit %s " % self.interface_id
cmd += " ".join(attribs)
(rc, out, err) = self.run_command(cmd)
resp = json.loads(out)
if resp.get('status') != 200:
rc = int(resp['status'])
err = resp['message']
out = None
else:
out = resp['result']
return (rc, out, err)
return (0, None, "No attributes have been modified")
def updates(self):
""" This method will check the current phy resource in the running
configuration and return a list of attribute that are not in sync
with the current resource from the running configuration.
"""
obj = self.get()
update = lambda a, z: a != z
updates = list()
for attrib in self.attributes:
value = getattr(self, attrib)
if update(obj[attrib], value) and value is not None:
updates.append(attrib)
self.log("updates: %s" % updates)
return updates
def main():
module = AnsibleModule(
argument_spec = dict(
interface_id=dict(default=None, type='str'),
admin=dict(default=None, choices=['up', 'down'], type='str'),
description=dict(default=None, type='str'),
mtu=dict(default=None, type='int'),
speed=dict(default=None, choices=['auto', '100m', '1g', '10g']),
duplex=dict(default=None, choices=['auto', 'half', 'full']),
logging=dict(default=False, type='bool')
),
supports_check_mode = True
)
obj = AristaInterface(module)
rc = None
result = dict()
if module.check_mode:
module.exit_json(changed=obj.changed)
else:
if obj.changed:
(rc, out, err) = obj.update()
result['results'] = out
if rc is not None and rc != 0:
module.fail_json(msg=err, rc=rc)
if rc is None:
result['changed'] = False
else:
result['changed'] = True
module.exit_json(**result)
# import module snippets
from ansible.module_utils.basic import *
main()