d7493a223f
Most of this code will probably stay with us for quite some time, so let's make things easier and consider them as our way of doing RPC. blueprint oslo-messaging Change-Id: Iaf353b23f9c54b82d1e02a6bd5a5960cec827c88
240 lines
10 KiB
Python
240 lines
10 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 oslo import messaging
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from neutron.agent import securitygroups_rpc as sg_rpc
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from neutron.common import constants as q_const
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from neutron.common import rpc as n_rpc
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from neutron.common import topics
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from neutron.db import api as db_api
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from neutron.db import dhcp_rpc_base
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from neutron.db import securitygroups_rpc_base as sg_db_rpc
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from neutron import manager
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from neutron.openstack.common import log
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from neutron.openstack.common import uuidutils
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from neutron.plugins.ml2 import db
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from neutron.plugins.ml2 import driver_api as api
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from neutron.plugins.ml2.drivers import type_tunnel
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# REVISIT(kmestery): Allow the type and mechanism drivers to supply the
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# mixins and eventually remove the direct dependencies on type_tunnel.
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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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sg_db_rpc.SecurityGroupServerRpcCallbackMixin,
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type_tunnel.TunnelRpcCallbackMixin):
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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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# FIXME(ihrachys): we can't use n_rpc.RpcCallback here due to
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# inheritance problems
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target = messaging.Target(version=RPC_API_VERSION)
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def __init__(self, notifier, type_manager):
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# REVISIT(kmestery): This depends on the first three super classes
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# not having their own __init__ functions. If an __init__() is added
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# to one, this could break. Fix this and add a unit test to cover this
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# test in H3.
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super(RpcCallbacks, self).__init__(notifier, type_manager)
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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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# REVISIT(irenab): Consider calling into bound MD to
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# handle the get_device_details RPC, then remove the 'else' clause
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if not uuidutils.is_uuid_like(device):
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port = db.get_port_from_device_mac(device)
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if port:
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return port.id
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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)s 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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binding = db.ensure_port_binding(session, port.id)
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if not binding.segment:
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LOG.warning(_("Device %(device)s requested by agent "
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"%(agent_id)s on network %(network_id)s not "
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"bound, vif_type: %(vif_type)s"),
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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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'vif_type': binding.vif_type})
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return {'device': device}
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segment = self._find_segment(segments, binding.segment)
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if not segment:
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LOG.warning(_("Device %(device)s requested by agent "
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"%(agent_id)s on network %(network_id)s "
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"invalid segment, vif_type: %(vif_type)s"),
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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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'vif_type': binding.vif_type})
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return {'device': device}
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new_status = (q_const.PORT_STATUS_BUILD 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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plugin = manager.NeutronManager.get_plugin()
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plugin.update_port_status(rpc_context,
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port_id,
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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 _find_segment(self, segments, segment_id):
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for segment in segments:
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if segment[api.ID] == segment_id:
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return segment
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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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host = kwargs.get('host')
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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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plugin = manager.NeutronManager.get_plugin()
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port_id = self._device_to_port_id(device)
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port_exists = True
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if (host and not plugin.port_bound_to_host(port_id, host)):
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LOG.debug(_("Device %(device)s not bound to the"
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" agent host %(host)s"),
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{'device': device, 'host': host})
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return {'device': device,
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'exists': port_exists}
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port_exists = plugin.update_port_status(rpc_context, port_id,
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q_const.PORT_STATUS_DOWN)
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return {'device': device,
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'exists': port_exists}
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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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host = kwargs.get('host')
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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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plugin = manager.NeutronManager.get_plugin()
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port_id = self._device_to_port_id(device)
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if (host and not plugin.port_bound_to_host(port_id, host)):
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LOG.debug(_("Device %(device)s not bound to the"
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" agent host %(host)s"),
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{'device': device, 'host': host})
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return
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plugin.update_port_status(rpc_context, port_id,
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q_const.PORT_STATUS_ACTIVE)
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class AgentNotifierApi(n_rpc.RpcProxy,
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sg_rpc.SecurityGroupAgentRpcApiMixin,
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type_tunnel.TunnelAgentRpcApiMixin):
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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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1.1 - Added get_active_networks_info, create_dhcp_port,
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update_dhcp_port, and removed get_dhcp_port methods.
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"""
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BASE_RPC_API_VERSION = '1.1'
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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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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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