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273 lines
8.1 KiB
Python
273 lines
8.1 KiB
Python
#!/usr/bin/python
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#coding: utf-8 -*-
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# pylint: disable=C0111
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# (c) 2013, David Stygstra <david.stygstra@gmail.com>
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#
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# Portions copyright @ 2015 VMware, Inc.
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#
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# This file is part of Ansible
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#
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# This module is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This software is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this software. If not, see <http://www.gnu.org/licenses/>.
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DOCUMENTATION = '''
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---
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module: openvswitch_port
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version_added: 1.4
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author: "David Stygstra (@stygstra)"
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short_description: Manage Open vSwitch ports
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requirements: [ ovs-vsctl ]
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description:
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- Manage Open vSwitch ports
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options:
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bridge:
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required: true
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description:
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- Name of bridge to manage
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port:
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required: true
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description:
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- Name of port to manage on the bridge
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tag:
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version_added: 2.2
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required: false
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description:
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- VLAN tag for this port
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state:
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required: false
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default: "present"
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choices: [ present, absent ]
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description:
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- Whether the port should exist
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timeout:
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required: false
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default: 5
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description:
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- How long to wait for ovs-vswitchd to respond
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external_ids:
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version_added: 2.0
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required: false
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default: {}
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description:
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- Dictionary of external_ids applied to a port.
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set:
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version_added: 2.0
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required: false
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default: None
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description:
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- Set a single property on a port.
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'''
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EXAMPLES = '''
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# Creates port eth2 on bridge br-ex
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- openvswitch_port: bridge=br-ex port=eth2 state=present
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# Creates port eth6 and set ofport equal to 6.
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- openvswitch_port: bridge=bridge-loop port=eth6 state=present
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set="Interface eth6 ofport_request=6"
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# Creates port vlan10 with tag 10 on bridge br-ex
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- openvswitch_port: bridge=br-ex port=vlan10 tag=10 state=present
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set="Interface vlan10 type=internal"
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# Assign interface id server1-vifeth6 and mac address 52:54:00:30:6d:11
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# to port vifeth6 and setup port to be managed by a controller.
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- openvswitch_port: bridge=br-int port=vifeth6 state=present
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args:
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external_ids:
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iface-id: "{{inventory_hostname}}-vifeth6"
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attached-mac: "52:54:00:30:6d:11"
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vm-id: "{{inventory_hostname}}"
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iface-status: "active"
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'''
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# pylint: disable=W0703
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def truncate_before(value, srch):
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""" Return content of str before the srch parameters. """
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before_index = value.find(srch)
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if (before_index >= 0):
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return value[:before_index]
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else:
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return value
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def _set_to_get(set_cmd, module):
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""" Convert set command to get command and set value.
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return tuple (get command, set value)
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"""
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##
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# If set has option: then we want to truncate just before that.
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set_cmd = truncate_before(set_cmd, " option:")
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get_cmd = set_cmd.split(" ")
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(key, value) = get_cmd[-1].split("=")
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module.log("get commands %s " % key)
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return (["--", "get"] + get_cmd[:-1] + [key], value)
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# pylint: disable=R0902
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class OVSPort(object):
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""" Interface to OVS port. """
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def __init__(self, module):
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self.module = module
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self.bridge = module.params['bridge']
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self.port = module.params['port']
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self.tag = module.params['tag']
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self.state = module.params['state']
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self.timeout = module.params['timeout']
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self.set_opt = module.params.get('set', None)
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def _vsctl(self, command, check_rc=True):
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'''Run ovs-vsctl command'''
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cmd = ['ovs-vsctl', '-t', str(self.timeout)] + command
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return self.module.run_command(cmd, check_rc=check_rc)
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def exists(self):
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'''Check if the port already exists'''
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(rtc, out, err) = self._vsctl(['list-ports', self.bridge])
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if rtc != 0:
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self.module.fail_json(msg=err)
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return any(port.rstrip() == self.port for port in out.split('\n'))
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def set(self, set_opt):
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""" Set attributes on a port. """
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self.module.log("set called %s" % set_opt)
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if (not set_opt):
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return False
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(get_cmd, set_value) = _set_to_get(set_opt, self.module)
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(rtc, out, err) = self._vsctl(get_cmd, False)
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if rtc != 0:
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##
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# ovs-vsctl -t 5 -- get Interface port external_ids:key
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# returns failure if key does not exist.
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out = None
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else:
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out = out.strip("\n")
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out = out.strip('"')
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if (out == set_value):
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return False
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(rtc, out, err) = self._vsctl(["--", "set"] + set_opt.split(" "))
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if rtc != 0:
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self.module.fail_json(msg=err)
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return True
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def add(self):
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'''Add the port'''
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cmd = ['add-port', self.bridge, self.port]
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if self.tag:
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cmd += ["tag=" + self.tag]
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if self.set and self.set_opt:
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cmd += ["--", "set"]
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cmd += self.set_opt.split(" ")
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(rtc, _, err) = self._vsctl(cmd)
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if rtc != 0:
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self.module.fail_json(msg=err)
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return True
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def delete(self):
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'''Remove the port'''
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(rtc, _, err) = self._vsctl(['del-port', self.bridge, self.port])
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if rtc != 0:
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self.module.fail_json(msg=err)
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def check(self):
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'''Run check mode'''
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try:
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if self.state == 'absent' and self.exists():
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changed = True
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elif self.state == 'present' and not self.exists():
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changed = True
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else:
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changed = False
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except Exception, earg:
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self.module.fail_json(msg=str(earg))
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self.module.exit_json(changed=changed)
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def run(self):
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'''Make the necessary changes'''
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changed = False
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try:
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if self.state == 'absent':
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if self.exists():
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self.delete()
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changed = True
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elif self.state == 'present':
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##
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# Add any missing ports.
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if (not self.exists()):
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self.add()
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changed = True
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##
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# If the -- set changed check here and make changes
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# but this only makes sense when state=present.
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if (not changed):
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changed = self.set(self.set_opt) or changed
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items = self.module.params['external_ids'].items()
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for (key, value) in items:
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value = value.replace('"', '')
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fmt_opt = "Interface %s external_ids:%s=%s"
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external_id = fmt_opt % (self.port, key, value)
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changed = self.set(external_id) or changed
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##
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except Exception, earg:
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self.module.fail_json(msg=str(earg))
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self.module.exit_json(changed=changed)
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# pylint: disable=E0602
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def main():
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""" Entry point. """
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module = AnsibleModule(
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argument_spec={
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'bridge': {'required': True},
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'port': {'required': True},
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'tag': {'required': False},
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'state': {'default': 'present', 'choices': ['present', 'absent']},
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'timeout': {'default': 5, 'type': 'int'},
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'set': {'required': False, 'default': None},
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'external_ids': {'default': {}, 'required': False, 'type': 'dict'},
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},
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supports_check_mode=True,
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)
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port = OVSPort(module)
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if module.check_mode:
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port.check()
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else:
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port.run()
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# pylint: disable=W0614
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# pylint: disable=W0401
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# pylint: disable=W0622
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# import module snippets
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from ansible.module_utils.basic import *
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main()
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