128 lines
4.8 KiB
Python
128 lines
4.8 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 Cisco Systems, Inc. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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# @author: Sumit Naiksatam, Cisco Systems, Inc.
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#
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"""VIF drivers for interface type direct."""
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from nova import exception as excp
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from nova import flags
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from nova.openstack.common import cfg
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from nova.openstack.common import log as logging
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from nova.virt.vif import VIFDriver
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from quantumclient import Client
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LOG = logging.getLogger(__name__)
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quantum_opts = [
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cfg.StrOpt('quantum_connection_host',
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default='127.0.0.1',
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help='HOST for connecting to quantum'),
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cfg.StrOpt('quantum_connection_port',
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default='9696',
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help='PORT for connecting to quantum'),
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cfg.StrOpt('quantum_default_tenant_id',
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default="default",
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help='Default tenant id when creating quantum networks'),
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]
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FLAGS = flags.FLAGS
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FLAGS.register_opts(quantum_opts)
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HOST = FLAGS.quantum_connection_host
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PORT = FLAGS.quantum_connection_port
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USE_SSL = False
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VERSION = '1.0'
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URI_PREFIX_CSCO = '/extensions/csco/tenants/{tenant_id}'
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TENANT_ID = 'nova'
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CSCO_EXT_NAME = 'Cisco Nova Tenant'
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ASSOCIATE_ACTION = '/associate_port'
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DETACH_ACTION = '/detach_port'
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class Libvirt802dot1QbhDriver(VIFDriver):
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"""VIF driver for 802.1Qbh"""
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def __init__(self):
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# We have to send a dummy tenant name here since the client
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# needs some tenant name, but the tenant name will not be used
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# since the extensions URL does not require it
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LOG.debug("Initializing Cisco Quantum VIF driver...")
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client = Client(HOST, PORT, USE_SSL, format='json', version=VERSION,
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uri_prefix="", tenant="dummy", logger=LOG)
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request_url = "/extensions"
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data = client.do_request('GET', request_url)
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LOG.debug("Obtained supported extensions from Quantum: %s" % data)
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for ext in data['extensions']:
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name = ext['name']
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if name == CSCO_EXT_NAME:
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LOG.debug("Quantum plugin supports required \"%s\" extension"
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"for the VIF driver." % name)
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return
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LOG.error("Quantum plugin does not support required \"%s\" extension"
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" for the VIF driver. nova-compute will quit."
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% CSCO_EXT_NAME)
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raise excp.ServiceUnavailable()
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def _update_configurations(self, instance, network, mapping, action):
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"""Gets the device name and the profile name from Quantum"""
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LOG.debug("Cisco Quantum VIF driver performing: %s" % (action))
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instance_id = instance['uuid']
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user_id = instance['user_id']
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project_id = instance['project_id']
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vif_id = mapping['vif_uuid']
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instance_data_dict = {
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'novatenant': {
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'instance_id': instance_id,
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'instance_desc': {
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'user_id': user_id,
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'project_id': project_id,
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'vif_id': vif_id}}}
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client = Client(HOST, PORT, USE_SSL, format='json', version=VERSION,
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uri_prefix=URI_PREFIX_CSCO, tenant=TENANT_ID,
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logger=LOG)
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request_url = "/novatenants/" + project_id + action
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data = client.do_request('PUT', request_url, body=instance_data_dict)
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if action == ASSOCIATE_ACTION:
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device = data['vif_desc']['device']
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portprofile = data['vif_desc']['portprofile']
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LOG.debug(_("Quantum provided the device: %s") % device)
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LOG.debug(_("Quantum provided the portprofile: %s") % portprofile)
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mac_id = mapping['mac'].replace(':', '')
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result = {
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'id': mac_id,
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'mac_address': mapping['mac'],
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'device_name': device,
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'profile_name': portprofile,
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}
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return result
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else:
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return data
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def plug(self, instance, network, mapping):
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return self._update_configurations(instance, network, mapping,
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ASSOCIATE_ACTION)
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def unplug(self, instance, network, mapping):
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self._update_configurations(instance, network, mapping,
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DETACH_ACTION)
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