580b47e54f
RPC has a version of itself. In Neutron a plugin implements several RPC interface, so a single RPC version doesn't work. In Mixin callback class approach, RPC versioning depends on each plugin implementation and it makes harder to maintain RPC version appropriately. This patch series replaces mixin RPC callback of server side with a separate class. This commit handles server-side callback of dhcp-agent RPC interface. DHCP-agent server-side callback class is moved from db/ to api/rpc/handlers because it doesn't involve any db operations and defining all RPC interfaces in a single place sounds reasonable. Note that moving other DHCP-agent related RPC interface class to api/rpc/handlers can be done in a separate patch as this patch focuses on reorganizing the server-side RPC callback class. Partial-Bug: #1359416 Change-Id: Ifb2a1bc0b7971995aae2856c9d4cd88c6dbc22d6
545 lines
24 KiB
Python
545 lines
24 KiB
Python
# Copyright (c) 2012 OpenStack Foundation.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import sys
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from oslo.config import cfg
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from neutron.agent import securitygroups_rpc as sg_rpc
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from neutron.api.rpc.agentnotifiers import dhcp_rpc_agent_api
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from neutron.api.rpc.agentnotifiers import l3_rpc_agent_api
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from neutron.api.rpc.handlers import dhcp_rpc
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from neutron.api.rpc.handlers import l3_rpc
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from neutron.api.v2 import attributes
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from neutron.common import constants as q_const
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from neutron.common import exceptions as n_exc
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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.common import utils
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from neutron.db import agents_db
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from neutron.db import agentschedulers_db
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from neutron.db import api as db_api
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from neutron.db import db_base_plugin_v2
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from neutron.db import external_net_db
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from neutron.db import extraroute_db
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from neutron.db import l3_agentschedulers_db
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from neutron.db import l3_gwmode_db
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from neutron.db import portbindings_db
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from neutron.db import quota_db # noqa
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from neutron.db import securitygroups_rpc_base as sg_db_rpc
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from neutron.extensions import portbindings
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from neutron.extensions import providernet as provider
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from neutron import manager
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from neutron.openstack.common import importutils
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from neutron.openstack.common import log as logging
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from neutron.plugins.common import constants as svc_constants
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from neutron.plugins.common import utils as plugin_utils
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from neutron.plugins.linuxbridge.common import constants
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from neutron.plugins.linuxbridge.db import l2network_db_v2 as db
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LOG = logging.getLogger(__name__)
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class LinuxBridgeRpcCallbacks(n_rpc.RpcCallback,
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sg_db_rpc.SecurityGroupServerRpcCallbackMixin
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):
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# history
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# 1.1 Support Security Group RPC
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# 1.2 Support get_devices_details_list
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RPC_API_VERSION = '1.2'
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# Device names start with "tap"
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TAP_PREFIX_LEN = 3
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@classmethod
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def get_port_from_device(cls, device):
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port = db.get_port_from_device(device[cls.TAP_PREFIX_LEN:])
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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 from %(agent_id)s"),
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{'device': device, 'agent_id': agent_id})
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port = self.get_port_from_device(device)
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if port:
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binding = db.get_network_binding(db_api.get_session(),
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port['network_id'])
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(network_type,
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segmentation_id) = constants.interpret_vlan_id(binding.vlan_id)
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entry = {'device': device,
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'network_type': network_type,
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'physical_network': binding.physical_network,
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'segmentation_id': segmentation_id,
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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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if cfg.CONF.AGENT.rpc_support_old_agents:
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entry['vlan_id'] = binding.vlan_id
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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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db.set_port_status(port['id'], new_status)
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else:
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entry = {'device': device}
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LOG.debug(_("%s can not be found in database"), device)
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return entry
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def get_devices_details_list(self, rpc_context, **kwargs):
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return [
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self.get_device_details(
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rpc_context,
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device=device,
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**kwargs
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)
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for device in kwargs.pop('devices', [])
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]
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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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port = self.get_port_from_device(device)
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LOG.debug(_("Device %(device)s no longer exists on %(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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if port:
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entry = {'device': device,
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'exists': True}
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if (host and not
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plugin.get_port_host(rpc_context, 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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elif port['status'] != q_const.PORT_STATUS_DOWN:
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# Set port status to DOWN
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db.set_port_status(port['id'], q_const.PORT_STATUS_DOWN)
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else:
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entry = {'device': device,
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'exists': False}
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LOG.debug(_("%s can not be found in database"), device)
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return entry
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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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port = self.get_port_from_device(device)
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LOG.debug(_("Device %(device)s up on %(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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if port:
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if (host and
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not plugin.get_port_host(rpc_context, 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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elif port['status'] != q_const.PORT_STATUS_ACTIVE:
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db.set_port_status(port['id'],
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q_const.PORT_STATUS_ACTIVE)
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else:
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LOG.debug(_("%s can not be found in database"), device)
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class AgentNotifierApi(n_rpc.RpcProxy,
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sg_rpc.SecurityGroupAgentRpcApiMixin):
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'''Agent side of the linux bridge 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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and update_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 = topic
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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, physical_network, vlan_id):
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network_type, segmentation_id = constants.interpret_vlan_id(vlan_id)
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kwargs = {'port': port,
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'network_type': network_type,
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'physical_network': physical_network,
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'segmentation_id': segmentation_id}
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if cfg.CONF.AGENT.rpc_support_old_agents:
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kwargs['vlan_id'] = vlan_id
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msg = self.make_msg('port_update', **kwargs)
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self.fanout_cast(context, msg,
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topic=self.topic_port_update)
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class LinuxBridgePluginV2(db_base_plugin_v2.NeutronDbPluginV2,
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external_net_db.External_net_db_mixin,
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extraroute_db.ExtraRoute_db_mixin,
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l3_gwmode_db.L3_NAT_db_mixin,
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sg_db_rpc.SecurityGroupServerRpcMixin,
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l3_agentschedulers_db.L3AgentSchedulerDbMixin,
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agentschedulers_db.DhcpAgentSchedulerDbMixin,
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portbindings_db.PortBindingMixin):
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"""Implement the Neutron abstractions using Linux bridging.
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A new VLAN is created for each network. An agent is relied upon
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to perform the actual Linux bridge configuration on each host.
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The provider extension is also supported. As discussed in
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https://bugs.launchpad.net/neutron/+bug/1023156, this class could
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be simplified, and filtering on extended attributes could be
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handled, by adding support for extended attributes to the
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NeutronDbPluginV2 base class. When that occurs, this class should
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be updated to take advantage of it.
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The port binding extension enables an external application relay
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information to and from the plugin.
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"""
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# This attribute specifies whether the plugin supports or not
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# bulk/pagination/sorting operations. Name mangling is used in
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# order to ensure it is qualified by class
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__native_bulk_support = True
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__native_pagination_support = True
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__native_sorting_support = True
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_supported_extension_aliases = ["provider", "external-net", "router",
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"ext-gw-mode", "binding", "quotas",
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"security-group", "agent", "extraroute",
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"l3_agent_scheduler",
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"dhcp_agent_scheduler"]
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@property
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def supported_extension_aliases(self):
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if not hasattr(self, '_aliases'):
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aliases = self._supported_extension_aliases[:]
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sg_rpc.disable_security_group_extension_by_config(aliases)
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self._aliases = aliases
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return self._aliases
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def __init__(self):
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super(LinuxBridgePluginV2, self).__init__()
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self.base_binding_dict = {
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portbindings.VIF_TYPE: portbindings.VIF_TYPE_BRIDGE,
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portbindings.VIF_DETAILS: {
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# TODO(rkukura): Replace with new VIF security details
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portbindings.CAP_PORT_FILTER:
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'security-group' in self.supported_extension_aliases}}
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self._parse_network_vlan_ranges()
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db.sync_network_states(self.network_vlan_ranges)
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self.tenant_network_type = cfg.CONF.VLANS.tenant_network_type
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if self.tenant_network_type not in [svc_constants.TYPE_LOCAL,
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svc_constants.TYPE_VLAN,
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svc_constants.TYPE_NONE]:
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LOG.error(_("Invalid tenant_network_type: %s. "
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"Service terminated!"),
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self.tenant_network_type)
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sys.exit(1)
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self._setup_rpc()
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self.network_scheduler = importutils.import_object(
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cfg.CONF.network_scheduler_driver
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)
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self.router_scheduler = importutils.import_object(
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cfg.CONF.router_scheduler_driver
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)
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LOG.debug(_("Linux Bridge Plugin initialization complete"))
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def _setup_rpc(self):
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# RPC support
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self.service_topics = {svc_constants.CORE: topics.PLUGIN,
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svc_constants.L3_ROUTER_NAT: topics.L3PLUGIN}
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self.conn = n_rpc.create_connection(new=True)
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self.endpoints = [LinuxBridgeRpcCallbacks(),
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dhcp_rpc.DhcpRpcCallback(),
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l3_rpc.L3RpcCallback(),
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agents_db.AgentExtRpcCallback()]
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for svc_topic in self.service_topics.values():
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self.conn.create_consumer(svc_topic, self.endpoints, fanout=False)
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# Consume from all consumers in threads
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self.conn.consume_in_threads()
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self.notifier = AgentNotifierApi(topics.AGENT)
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self.agent_notifiers[q_const.AGENT_TYPE_DHCP] = (
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dhcp_rpc_agent_api.DhcpAgentNotifyAPI()
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)
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self.agent_notifiers[q_const.AGENT_TYPE_L3] = (
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l3_rpc_agent_api.L3AgentNotifyAPI()
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)
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def _parse_network_vlan_ranges(self):
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try:
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self.network_vlan_ranges = plugin_utils.parse_network_vlan_ranges(
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cfg.CONF.VLANS.network_vlan_ranges)
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except Exception as ex:
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LOG.error(_("%s. Agent terminated!"), ex)
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sys.exit(1)
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LOG.info(_("Network VLAN ranges: %s"), self.network_vlan_ranges)
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def _add_network_vlan_range(self, physical_network, vlan_min, vlan_max):
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self._add_network(physical_network)
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self.network_vlan_ranges[physical_network].append((vlan_min, vlan_max))
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def _add_network(self, physical_network):
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if physical_network not in self.network_vlan_ranges:
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self.network_vlan_ranges[physical_network] = []
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def _extend_network_dict_provider(self, context, network):
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binding = db.get_network_binding(context.session, network['id'])
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if binding.vlan_id == constants.FLAT_VLAN_ID:
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network[provider.NETWORK_TYPE] = svc_constants.TYPE_FLAT
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network[provider.PHYSICAL_NETWORK] = binding.physical_network
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network[provider.SEGMENTATION_ID] = None
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elif binding.vlan_id == constants.LOCAL_VLAN_ID:
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network[provider.NETWORK_TYPE] = svc_constants.TYPE_LOCAL
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network[provider.PHYSICAL_NETWORK] = None
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network[provider.SEGMENTATION_ID] = None
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else:
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network[provider.NETWORK_TYPE] = svc_constants.TYPE_VLAN
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network[provider.PHYSICAL_NETWORK] = binding.physical_network
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network[provider.SEGMENTATION_ID] = binding.vlan_id
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def _process_provider_create(self, context, attrs):
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network_type = attrs.get(provider.NETWORK_TYPE)
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physical_network = attrs.get(provider.PHYSICAL_NETWORK)
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segmentation_id = attrs.get(provider.SEGMENTATION_ID)
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network_type_set = attributes.is_attr_set(network_type)
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physical_network_set = attributes.is_attr_set(physical_network)
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segmentation_id_set = attributes.is_attr_set(segmentation_id)
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if not (network_type_set or physical_network_set or
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segmentation_id_set):
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return (None, None, None)
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if not network_type_set:
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msg = _("provider:network_type required")
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raise n_exc.InvalidInput(error_message=msg)
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elif network_type == svc_constants.TYPE_FLAT:
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if segmentation_id_set:
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msg = _("provider:segmentation_id specified for flat network")
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raise n_exc.InvalidInput(error_message=msg)
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else:
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segmentation_id = constants.FLAT_VLAN_ID
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elif network_type == svc_constants.TYPE_VLAN:
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if not segmentation_id_set:
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msg = _("provider:segmentation_id required")
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raise n_exc.InvalidInput(error_message=msg)
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if not utils.is_valid_vlan_tag(segmentation_id):
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msg = (_("provider:segmentation_id out of range "
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"(%(min_id)s through %(max_id)s)") %
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{'min_id': q_const.MIN_VLAN_TAG,
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'max_id': q_const.MAX_VLAN_TAG})
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raise n_exc.InvalidInput(error_message=msg)
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elif network_type == svc_constants.TYPE_LOCAL:
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if physical_network_set:
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msg = _("provider:physical_network specified for local "
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"network")
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raise n_exc.InvalidInput(error_message=msg)
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else:
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physical_network = None
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if segmentation_id_set:
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msg = _("provider:segmentation_id specified for local "
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"network")
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raise n_exc.InvalidInput(error_message=msg)
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else:
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segmentation_id = constants.LOCAL_VLAN_ID
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else:
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msg = _("provider:network_type %s not supported") % network_type
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raise n_exc.InvalidInput(error_message=msg)
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if network_type in [svc_constants.TYPE_VLAN, svc_constants.TYPE_FLAT]:
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if physical_network_set:
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if physical_network not in self.network_vlan_ranges:
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msg = (_("Unknown provider:physical_network %s") %
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physical_network)
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raise n_exc.InvalidInput(error_message=msg)
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elif 'default' in self.network_vlan_ranges:
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physical_network = 'default'
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else:
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msg = _("provider:physical_network required")
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raise n_exc.InvalidInput(error_message=msg)
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return (network_type, physical_network, segmentation_id)
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def create_network(self, context, network):
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(network_type, physical_network,
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vlan_id) = self._process_provider_create(context,
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network['network'])
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session = context.session
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with session.begin(subtransactions=True):
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#set up default security groups
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tenant_id = self._get_tenant_id_for_create(
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context, network['network'])
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self._ensure_default_security_group(context, tenant_id)
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if not network_type:
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# tenant network
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network_type = self.tenant_network_type
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if network_type == svc_constants.TYPE_NONE:
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raise n_exc.TenantNetworksDisabled()
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elif network_type == svc_constants.TYPE_VLAN:
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physical_network, vlan_id = db.reserve_network(session)
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else: # TYPE_LOCAL
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vlan_id = constants.LOCAL_VLAN_ID
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else:
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# provider network
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if network_type in [svc_constants.TYPE_VLAN,
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svc_constants.TYPE_FLAT]:
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db.reserve_specific_network(session, physical_network,
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vlan_id)
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# no reservation needed for TYPE_LOCAL
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net = super(LinuxBridgePluginV2, self).create_network(context,
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network)
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db.add_network_binding(session, net['id'],
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physical_network, vlan_id)
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self._process_l3_create(context, net, network['network'])
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self._extend_network_dict_provider(context, net)
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# note - exception will rollback entire transaction
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return net
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def update_network(self, context, id, network):
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provider._raise_if_updates_provider_attributes(network['network'])
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session = context.session
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with session.begin(subtransactions=True):
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net = super(LinuxBridgePluginV2, self).update_network(context, id,
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network)
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self._process_l3_update(context, net, network['network'])
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self._extend_network_dict_provider(context, net)
|
|
return net
|
|
|
|
def delete_network(self, context, id):
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
binding = db.get_network_binding(session, id)
|
|
self._process_l3_delete(context, id)
|
|
super(LinuxBridgePluginV2, self).delete_network(context, id)
|
|
if binding.vlan_id != constants.LOCAL_VLAN_ID:
|
|
db.release_network(session, binding.physical_network,
|
|
binding.vlan_id, self.network_vlan_ranges)
|
|
# the network_binding record is deleted via cascade from
|
|
# the network record, so explicit removal is not necessary
|
|
self.notifier.network_delete(context, id)
|
|
|
|
def get_network(self, context, id, fields=None):
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
net = super(LinuxBridgePluginV2, self).get_network(context,
|
|
id, None)
|
|
self._extend_network_dict_provider(context, net)
|
|
return self._fields(net, fields)
|
|
|
|
def get_networks(self, context, filters=None, fields=None,
|
|
sorts=None, limit=None, marker=None, page_reverse=False):
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
nets = super(LinuxBridgePluginV2,
|
|
self).get_networks(context, filters, None, sorts,
|
|
limit, marker, page_reverse)
|
|
for net in nets:
|
|
self._extend_network_dict_provider(context, net)
|
|
|
|
return [self._fields(net, fields) for net in nets]
|
|
|
|
def create_port(self, context, port):
|
|
session = context.session
|
|
port_data = port['port']
|
|
with session.begin(subtransactions=True):
|
|
self._ensure_default_security_group_on_port(context, port)
|
|
sgids = self._get_security_groups_on_port(context, port)
|
|
# Set port status as 'DOWN'. This will be updated by agent
|
|
port['port']['status'] = q_const.PORT_STATUS_DOWN
|
|
|
|
port = super(LinuxBridgePluginV2,
|
|
self).create_port(context, port)
|
|
self._process_portbindings_create_and_update(context,
|
|
port_data,
|
|
port)
|
|
self._process_port_create_security_group(
|
|
context, port, sgids)
|
|
self.notify_security_groups_member_updated(context, port)
|
|
return port
|
|
|
|
def update_port(self, context, id, port):
|
|
original_port = self.get_port(context, id)
|
|
session = context.session
|
|
need_port_update_notify = False
|
|
|
|
with session.begin(subtransactions=True):
|
|
updated_port = super(LinuxBridgePluginV2, self).update_port(
|
|
context, id, port)
|
|
self._process_portbindings_create_and_update(context,
|
|
port['port'],
|
|
updated_port)
|
|
need_port_update_notify = self.update_security_group_on_port(
|
|
context, id, port, original_port, updated_port)
|
|
|
|
need_port_update_notify |= self.is_security_group_member_updated(
|
|
context, original_port, updated_port)
|
|
|
|
if original_port['admin_state_up'] != updated_port['admin_state_up']:
|
|
need_port_update_notify = True
|
|
|
|
if need_port_update_notify:
|
|
self._notify_port_updated(context, updated_port)
|
|
return updated_port
|
|
|
|
def delete_port(self, context, id, l3_port_check=True):
|
|
|
|
# if needed, check to see if this is a port owned by
|
|
# and l3-router. If so, we should prevent deletion.
|
|
if l3_port_check:
|
|
self.prevent_l3_port_deletion(context, id)
|
|
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
router_ids = self.disassociate_floatingips(
|
|
context, id, do_notify=False)
|
|
port = self.get_port(context, id)
|
|
self._delete_port_security_group_bindings(context, id)
|
|
super(LinuxBridgePluginV2, self).delete_port(context, id)
|
|
|
|
# now that we've left db transaction, we are safe to notify
|
|
self.notify_routers_updated(context, router_ids)
|
|
self.notify_security_groups_member_updated(context, port)
|
|
|
|
def _notify_port_updated(self, context, port):
|
|
binding = db.get_network_binding(context.session,
|
|
port['network_id'])
|
|
self.notifier.port_update(context, port,
|
|
binding.physical_network,
|
|
binding.vlan_id)
|