f572a5eb93
The Modular L2 Plugin uses drivers to support separately extensible sets of network types and of mechanisms for accessing networks of those types. This is an initial implementation that has been tested with the openvswitch and linuxbridge agents, and should also work with the hyperv agent. See quantum/plugins/ml2/README for details. Implements: blueprint modular-l2 Change-Id: Ia8cae480180f0990af7d5e5e56f29eaeac205e0e
204 lines
8.3 KiB
Python
204 lines
8.3 KiB
Python
# Copyright (c) 2013 OpenStack Foundation
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# 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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from quantum.agent import securitygroups_rpc as sg_rpc
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from quantum.common import constants as q_const
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from quantum.common import rpc as q_rpc
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from quantum.common import topics
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from quantum.db import agents_db
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from quantum.db import api as db_api
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from quantum.db import dhcp_rpc_base
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from quantum.db import l3_rpc_base
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from quantum.db import securitygroups_rpc_base as sg_db_rpc
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from quantum.openstack.common import log
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from quantum.openstack.common.rpc import proxy
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from quantum.plugins.ml2 import db
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from quantum.plugins.ml2 import driver_api as api
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LOG = log.getLogger(__name__)
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TAP_DEVICE_PREFIX = 'tap'
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TAP_DEVICE_PREFIX_LENGTH = 3
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class RpcCallbacks(dhcp_rpc_base.DhcpRpcCallbackMixin,
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l3_rpc_base.L3RpcCallbackMixin,
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sg_db_rpc.SecurityGroupServerRpcCallbackMixin):
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RPC_API_VERSION = '1.1'
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# history
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# 1.0 Initial version (from openvswitch/linuxbridge)
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# 1.1 Support Security Group RPC
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def __init__(self, notifier):
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self.notifier = notifier
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def create_rpc_dispatcher(self):
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'''Get the rpc dispatcher for this manager.
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If a manager would like to set an rpc API version, or support more than
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one class as the target of rpc messages, override this method.
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'''
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return q_rpc.PluginRpcDispatcher([self,
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agents_db.AgentExtRpcCallback()])
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@classmethod
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def _device_to_port_id(cls, device):
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# REVISIT(rkukura): Consider calling into MechanismDrivers to
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# process device names, or having MechanismDrivers supply list
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# of device prefixes to strip.
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if device.startswith(TAP_DEVICE_PREFIX):
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return device[TAP_DEVICE_PREFIX_LENGTH:]
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else:
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return device
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@classmethod
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def get_port_from_device(cls, device):
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port_id = cls._device_to_port_id(device)
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port = db.get_port_and_sgs(port_id)
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if port:
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port['device'] = device
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return port
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def get_device_details(self, rpc_context, **kwargs):
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"""Agent requests device details."""
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agent_id = kwargs.get('agent_id')
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device = kwargs.get('device')
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LOG.debug(_("Device %(device)s details requested by agent "
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"%(agent_id)s"),
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{'device': device, 'agent_id': agent_id})
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port_id = self._device_to_port_id(device)
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session = db_api.get_session()
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with session.begin(subtransactions=True):
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port = db.get_port(session, port_id)
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if not port:
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LOG.warning(_("Device %(device)s requested by agent "
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"%(agent_id)s not found in database"),
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{'device': device, 'agent_id': agent_id})
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return {'device': device}
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segments = db.get_network_segments(session, port.network_id)
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if not segments:
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LOG.warning(_("Device %(device)s requested by agent "
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"%(agent_id)s has network %(network_id) with "
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"no segments"),
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{'device': device,
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'agent_id': agent_id,
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'network_id': port.network_id})
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return {'device': device}
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#TODO(rkukura): Use/create port binding
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segment = segments[0]
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new_status = (q_const.PORT_STATUS_ACTIVE if port.admin_state_up
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else q_const.PORT_STATUS_DOWN)
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if port.status != new_status:
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port.status = new_status
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entry = {'device': device,
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'network_id': port.network_id,
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'port_id': port.id,
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'admin_state_up': port.admin_state_up,
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'network_type': segment[api.NETWORK_TYPE],
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'segmentation_id': segment[api.SEGMENTATION_ID],
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'physical_network': segment[api.PHYSICAL_NETWORK]}
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LOG.debug(_("Returning: %s"), entry)
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return entry
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def update_device_down(self, rpc_context, **kwargs):
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"""Device no longer exists on agent."""
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# TODO(garyk) - live migration and port status
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agent_id = kwargs.get('agent_id')
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device = kwargs.get('device')
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LOG.debug(_("Device %(device)s no longer exists at agent "
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"%(agent_id)s"),
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{'device': device, 'agent_id': agent_id})
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port_id = self._device_to_port_id(device)
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session = db_api.get_session()
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with session.begin(subtransactions=True):
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port = db.get_port(session, port_id)
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if not port:
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LOG.warning(_("Device %(device)s updated down by agent "
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"%(agent_id)s not found in database"),
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{'device': device, 'agent_id': agent_id})
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return {'device': device,
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'exists': False}
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if port.status != q_const.PORT_STATUS_DOWN:
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port.status = q_const.PORT_STATUS_DOWN
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return {'device': device,
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'exists': True}
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def update_device_up(self, rpc_context, **kwargs):
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"""Device is up on agent."""
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agent_id = kwargs.get('agent_id')
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device = kwargs.get('device')
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LOG.debug(_("Device %(device)s up at agent %(agent_id)s"),
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{'device': device, 'agent_id': agent_id})
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port_id = self._device_to_port_id(device)
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session = db_api.get_session()
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with session.begin(subtransactions=True):
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port = db.get_port(session, port_id)
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if not port:
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LOG.warning(_("Device %(device)s updated up by agent "
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"%(agent_id)s not found in database"),
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{'device': device, 'agent_id': agent_id})
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if port.status != q_const.PORT_STATUS_ACTIVE:
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port.status = q_const.PORT_STATUS_ACTIVE
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# TODO(rkukura) Add tunnel_sync() here if not implemented via a
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# driver.
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class AgentNotifierApi(proxy.RpcProxy,
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sg_rpc.SecurityGroupAgentRpcApiMixin):
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"""Agent side of the openvswitch rpc API.
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API version history:
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1.0 - Initial version.
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"""
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BASE_RPC_API_VERSION = '1.0'
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def __init__(self, topic):
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super(AgentNotifierApi, self).__init__(
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topic=topic, default_version=self.BASE_RPC_API_VERSION)
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self.topic_network_delete = topics.get_topic_name(topic,
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topics.NETWORK,
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topics.DELETE)
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self.topic_port_update = topics.get_topic_name(topic,
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topics.PORT,
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topics.UPDATE)
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# TODO(rkukura): Add topic_tunnel_update here if not
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# implemented via a driver.
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def network_delete(self, context, network_id):
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self.fanout_cast(context,
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self.make_msg('network_delete',
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network_id=network_id),
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topic=self.topic_network_delete)
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def port_update(self, context, port, network_type, segmentation_id,
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physical_network):
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self.fanout_cast(context,
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self.make_msg('port_update',
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port=port,
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network_type=network_type,
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segmentation_id=segmentation_id,
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physical_network=physical_network),
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topic=self.topic_port_update)
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# TODO(rkukura): Add tunnel_update() here if not
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# implemented via a driver.
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