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#!/usr/bin/python
#coding: utf-8 -*-
# pylint: disable=C0111
# (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/>.
DOCUMENTATION = '''
---
module: openvswitch_port
version_added: 1.4
author: "David Stygstra (@stygstra)"
short_description: Manage Open vSwitch ports
requirements: [ ovs-vsctl ]
description:
- Manage Open vSwitch ports
options:
bridge:
required: true
description:
- Name of bridge to manage
port:
required: true
description:
- Name of port to manage on the bridge
tag:
version_added: 2.2
required: false
description:
- VLAN tag for this port
state:
required: false
default: "present"
choices: [ present, absent ]
description:
- Whether the port 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: {}
description:
- Dictionary of external_ids applied to a port.
set:
version_added: 2.0
required: false
default: None
description:
- Set a single property on a port.
'''
EXAMPLES = '''
# Creates port eth2 on bridge br-ex
- openvswitch_port:
bridge: br-ex
port: eth2
state: present
# Creates port eth6
- openvswitch_port:
bridge: bridge-loop
port: eth6
state: present
set: Interface eth6
# Creates port vlan10 with tag 10 on bridge br-ex
- openvswitch_port:
bridge: br-ex
port: vlan10
tag: 10
state: present
set: Interface vlan10
# Assign interface id server1-vifeth6 and mac address 00:00:5E:00:53:23
# to port vifeth6 and setup port to be managed by a controller.
- openvswitch_port:
bridge: br-int
port: vifeth6
state: present
args:
external_ids:
iface-id: '{{ inventory_hostname }}-vifeth6'
attached-mac: '00:00:5E:00:53:23'
vm-id: '{{ inventory_hostname }}'
iface-status: active
'''
# pylint: disable=W0703
def truncate_before(value, srch):
""" Return content of str before the srch parameters. """
before_index = value.find(srch)
if (before_index >= 0):
return value[:before_index]
else:
return value
def _set_to_get(set_cmd, module):
""" Convert set command to get command and set value.
return tuple (get command, set value)
"""
##
# If set has option: then we want to truncate just before that.
set_cmd = truncate_before(set_cmd, " option:")
get_cmd = set_cmd.split(" ")
(key, value) = get_cmd[-1].split("=")
module.log("get commands %s " % key)
return (["--", "get"] + get_cmd[:-1] + [key], value)
# pylint: disable=R0902
class OVSPort(object):
""" Interface to OVS port. """
def __init__(self, module):
self.module = module
self.bridge = module.params['bridge']
self.port = module.params['port']
self.tag = module.params['tag']
self.state = module.params['state']
self.timeout = module.params['timeout']
self.set_opt = module.params.get('set', None)
def _vsctl(self, command, check_rc=True):
'''Run ovs-vsctl command'''
cmd = ['ovs-vsctl', '-t', str(self.timeout)] + command
return self.module.run_command(cmd, check_rc=check_rc)
def exists(self):
'''Check if the port already exists'''
(rtc, out, err) = self._vsctl(['list-ports', self.bridge])
if rtc != 0:
self.module.fail_json(msg=err)
return any(port.rstrip() == self.port for port in out.split('\n')) or self.port == self.bridge
def set(self, set_opt):
""" Set attributes on a port. """
self.module.log("set called %s" % set_opt)
if (not set_opt):
return False
(get_cmd, set_value) = _set_to_get(set_opt, self.module)
(rtc, out, err) = self._vsctl(get_cmd, False)
if rtc != 0:
##
# ovs-vsctl -t 5 -- get Interface port external_ids:key
# returns failure if key does not exist.
out = None
else:
out = out.strip("\n")
out = out.strip('"')
if (out == set_value):
return False
(rtc, out, err) = self._vsctl(["--", "set"] + set_opt.split(" "))
if rtc != 0:
self.module.fail_json(msg=err)
return True
def add(self):
'''Add the port'''
cmd = ['add-port', self.bridge, self.port]
if self.tag:
cmd += ["tag=" + self.tag]
if self.set and self.set_opt:
cmd += ["--", "set"]
cmd += self.set_opt.split(" ")
(rtc, _, err) = self._vsctl(cmd)
if rtc != 0:
self.module.fail_json(msg=err)
return True
def delete(self):
'''Remove the port'''
(rtc, _, err) = self._vsctl(['del-port', self.bridge, self.port])
if rtc != 0:
self.module.fail_json(msg=err)
def check(self):
'''Run check mode'''
try:
if self.state == 'absent' and self.exists():
changed = True
elif self.state == 'present' and not self.exists():
changed = True
else:
changed = False
except Exception:
earg = get_exception()
self.module.fail_json(msg=str(earg))
self.module.exit_json(changed=changed)
def run(self):
'''Make the necessary changes'''
changed = False
try:
if self.state == 'absent':
if self.exists():
self.delete()
changed = True
elif self.state == 'present':
##
# Add any missing ports.
if (not self.exists()):
self.add()
changed = True
##
# If the -- set changed check here and make changes
# but this only makes sense when state=present.
if (not changed):
changed = self.set(self.set_opt) or changed
items = self.module.params['external_ids'].items()
for (key, value) in items:
value = value.replace('"', '')
fmt_opt = "Interface %s external_ids:%s=%s"
external_id = fmt_opt % (self.port, key, value)
changed = self.set(external_id) or changed
##
except Exception:
earg = get_exception()
self.module.fail_json(msg=str(earg))
self.module.exit_json(changed=changed)
# pylint: disable=E0602
def main():
""" Entry point. """
module = AnsibleModule(
argument_spec={
'bridge': {'required': True},
'port': {'required': True},
'tag': {'required': False},
'state': {'default': 'present', 'choices': ['present', 'absent']},
'timeout': {'default': 5, 'type': 'int'},
'set': {'required': False, 'default': None},
'external_ids': {'default': {}, 'required': False, 'type': 'dict'},
},
supports_check_mode=True,
)
port = OVSPort(module)
if module.check_mode:
port.check()
else:
port.run()
# pylint: disable=W0614
# pylint: disable=W0401
# pylint: disable=W0622
# import module snippets
from ansible.module_utils.basic import *
from ansible.module_utils.pycompat24 import get_exception
if __name__ == '__main__':
main()
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