Current File : //proc/self/root/lib/python2.7/site-packages/ansible/modules/extras/network/openvswitch_bridge.py
#!/usr/bin/python
#coding: utf-8 -*-
# (c) 2013, David Stygstra <david.stygstra@gmail.com>
#
# Portions copyright @ 2015 VMware, Inc.
#
# This file is part of Ansible
#
# This module 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 software 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 software. If not, see <http://www.gnu.org/licenses/>.
# pylint: disable=C0111
DOCUMENTATION = '''
---
module: openvswitch_bridge
version_added: 1.4
author: "David Stygstra (@stygstra)"
short_description: Manage Open vSwitch bridges
requirements: [ ovs-vsctl ]
description:
- Manage Open vSwitch bridges
options:
bridge:
required: true
description:
- Name of bridge to manage
state:
required: false
default: "present"
choices: [ present, absent ]
description:
- Whether the bridge should exist
timeout:
required: false
default: 5
description:
- How long to wait for ovs-vswitchd to respond
external_ids:
version_added: 2.0
required: false
default: None
description:
- A dictionary of external-ids. Omitting this parameter is a No-op.
To clear all external-ids pass an empty value.
fail_mode:
version_added: 2.0
default: None
required: false
choices : [secure, standalone]
description:
- Set bridge fail-mode. The default value (None) is a No-op.
'''
EXAMPLES = '''
# Create a bridge named br-int
- openvswitch_bridge: bridge=br-int state=present
# Create an integration bridge
- openvswitch_bridge: bridge=br-int state=present fail_mode=secure
args:
external_ids:
bridge-id: "br-int"
'''
class OVSBridge(object):
""" Interface to ovs-vsctl. """
def __init__(self, module):
self.module = module
self.bridge = module.params['bridge']
self.state = module.params['state']
self.timeout = module.params['timeout']
self.fail_mode = module.params['fail_mode']
def _vsctl(self, command):
'''Run ovs-vsctl command'''
return self.module.run_command(['ovs-vsctl', '-t',
str(self.timeout)] + command)
def exists(self):
'''Check if the bridge already exists'''
rtc, _, err = self._vsctl(['br-exists', self.bridge])
if rtc == 0: # See ovs-vsctl(8) for status codes
return True
if rtc == 2:
return False
self.module.fail_json(msg=err)
def add(self):
'''Create the bridge'''
rtc, _, err = self._vsctl(['add-br', self.bridge])
if rtc != 0:
self.module.fail_json(msg=err)
if self.fail_mode:
self.set_fail_mode()
def delete(self):
'''Delete the bridge'''
rtc, _, err = self._vsctl(['del-br', self.bridge])
if rtc != 0:
self.module.fail_json(msg=err)
def check(self):
'''Run check mode'''
changed = False
# pylint: disable=W0703
try:
if self.state == 'present' and self.exists():
if (self.fail_mode and
(self.fail_mode != self.get_fail_mode())):
changed = True
##
# Check if external ids would change.
current_external_ids = self.get_external_ids()
exp_external_ids = self.module.params['external_ids']
if exp_external_ids is not None:
for (key, value) in exp_external_ids:
if ((key in current_external_ids) and
(value != current_external_ids[key])):
changed = True
##
# Check if external ids would be removed.
for (key, value) in current_external_ids.items():
if key not in exp_external_ids:
changed = True
elif self.state == 'absent' and self.exists():
changed = True
elif self.state == 'present' and not self.exists():
changed = True
except Exception, earg:
self.module.fail_json(msg=str(earg))
# pylint: enable=W0703
self.module.exit_json(changed=changed)
def run(self):
'''Make the necessary changes'''
changed = False
# pylint: disable=W0703
try:
if self.state == 'absent':
if self.exists():
self.delete()
changed = True
elif self.state == 'present':
if not self.exists():
self.add()
changed = True
current_fail_mode = self.get_fail_mode()
if self.fail_mode and (self.fail_mode != current_fail_mode):
self.module.log( "changing fail mode %s to %s" % (current_fail_mode, self.fail_mode))
self.set_fail_mode()
changed = True
current_external_ids = self.get_external_ids()
##
# Change and add existing external ids.
exp_external_ids = self.module.params['external_ids']
if exp_external_ids is not None:
for (key, value) in exp_external_ids.items():
if ((value != current_external_ids.get(key, None)) and
self.set_external_id(key, value)):
changed = True
##
# Remove current external ids that are not passed in.
for (key, value) in current_external_ids.items():
if ((key not in exp_external_ids) and
self.set_external_id(key, None)):
changed = True
except Exception, earg:
self.module.fail_json(msg=str(earg))
# pylint: enable=W0703
self.module.exit_json(changed=changed)
def get_external_ids(self):
""" Return the bridge's external ids as a dict. """
results = {}
if self.exists():
rtc, out, err = self._vsctl(['br-get-external-id', self.bridge])
if rtc != 0:
self.module.fail_json(msg=err)
lines = out.split("\n")
lines = [item.split("=") for item in lines if len(item) > 0]
for item in lines:
results[item[0]] = item[1]
return results
def set_external_id(self, key, value):
""" Set external id. """
if self.exists():
cmd = ['br-set-external-id', self.bridge, key]
if value:
cmd += [value]
(rtc, _, err) = self._vsctl(cmd)
if rtc != 0:
self.module.fail_json(msg=err)
return True
return False
def get_fail_mode(self):
""" Get failure mode. """
value = ''
if self.exists():
rtc, out, err = self._vsctl(['get-fail-mode', self.bridge])
if rtc != 0:
self.module.fail_json(msg=err)
value = out.strip("\n")
return value
def set_fail_mode(self):
""" Set failure mode. """
if self.exists():
(rtc, _, err) = self._vsctl(['set-fail-mode', self.bridge,
self.fail_mode])
if rtc != 0:
self.module.fail_json(msg=err)
# pylint: disable=E0602
def main():
""" Entry point. """
module = AnsibleModule(
argument_spec={
'bridge': {'required': True},
'state': {'default': 'present', 'choices': ['present', 'absent']},
'timeout': {'default': 5, 'type': 'int'},
'external_ids': {'default': None, 'type': 'dict'},
'fail_mode': {'default': None},
},
supports_check_mode=True,
)
bridge = OVSBridge(module)
if module.check_mode:
bridge.check()
else:
bridge.run()
# pylint: disable=W0614
# pylint: disable=W0401
# pylint: disable=W0622
# import module snippets
from ansible.module_utils.basic import *
main()
Mini Shell