9f1d2e0c51
Blueprint l3-ext-gw-modes This patch introduces an API extension for enabling or disabling source/destination NAT on the router gateway interface, and implements support for this extension in the l3 agent, which has also been refactored in order to ensure SNAT rules are applied (or removed) in a single place in the process_router routine. The patch therefore enables the extension on all plugins which leverage this agent. In this patch the validate_boolean function is re-introduced, as it used for validating a field of the external_gateway_info dict. The resource extension process is also slightly changed so that an API extension can specify which extension should be processed before its attributes can be processed. This is needed to ensure the proper validator for external_gateway_info is installed. Change-Id: Ia80cb56135229366b1706dd3c6d366e40cde1500
589 lines
26 KiB
Python
589 lines
26 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 Nicira Networks, Inc.
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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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# @author: Somik Behera, Nicira Networks, Inc.
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# @author: Brad Hall, Nicira Networks, Inc.
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# @author: Dan Wendlandt, Nicira Networks, Inc.
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# @author: Dave Lapsley, Nicira Networks, Inc.
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# @author: Aaron Rosen, Nicira Networks, Inc.
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# @author: Bob Kukura, Red Hat, Inc.
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import sys
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from oslo.config import cfg
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from quantum.agent import securitygroups_rpc as sg_rpc
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from quantum.api.rpc.agentnotifiers import dhcp_rpc_agent_api
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from quantum.api.rpc.agentnotifiers import l3_rpc_agent_api
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from quantum.api.v2 import attributes
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from quantum.common import constants as q_const
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from quantum.common import exceptions as q_exc
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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.common import utils
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from quantum.db import agents_db
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from quantum.db import agentschedulers_db
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from quantum.db import db_base_plugin_v2
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from quantum.db import dhcp_rpc_base
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from quantum.db import extraroute_db
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from quantum.db import l3_gwmode_db
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from quantum.db import l3_rpc_base
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from quantum.db import portbindings_db
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from quantum.db import quota_db # noqa
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from quantum.db import securitygroups_rpc_base as sg_db_rpc
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from quantum.extensions import portbindings
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from quantum.extensions import providernet as provider
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from quantum.openstack.common import importutils
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from quantum.openstack.common import log as logging
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from quantum.openstack.common import rpc
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from quantum.openstack.common.rpc import proxy
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from quantum.plugins.common import utils as plugin_utils
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from quantum.plugins.openvswitch.common import config # noqa
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from quantum.plugins.openvswitch.common import constants
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from quantum.plugins.openvswitch import ovs_db_v2
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LOG = logging.getLogger(__name__)
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class OVSRpcCallbacks(dhcp_rpc_base.DhcpRpcCallbackMixin,
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l3_rpc_base.L3RpcCallbackMixin,
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sg_db_rpc.SecurityGroupServerRpcCallbackMixin):
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# history
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# 1.0 Initial version
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# 1.1 Support Security Group RPC
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RPC_API_VERSION = '1.1'
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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 get_port_from_device(cls, device):
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port = ovs_db_v2.get_port_from_device(device)
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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 = ovs_db_v2.get_port(device)
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if port:
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binding = ovs_db_v2.get_network_binding(None, port['network_id'])
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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': binding.network_type,
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'segmentation_id': binding.segmentation_id,
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'physical_network': binding.physical_network}
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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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ovs_db_v2.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 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 on %(agent_id)s"),
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{'device': device, 'agent_id': agent_id})
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port = ovs_db_v2.get_port(device)
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if port:
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entry = {'device': device,
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'exists': True}
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if port['status'] != q_const.PORT_STATUS_DOWN:
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# Set port status to DOWN
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ovs_db_v2.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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LOG.debug(_("Device %(device)s up on %(agent_id)s"),
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{'device': device, 'agent_id': agent_id})
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port = ovs_db_v2.get_port(device)
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if port:
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if port['status'] != q_const.PORT_STATUS_ACTIVE:
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ovs_db_v2.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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def tunnel_sync(self, rpc_context, **kwargs):
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"""Update new tunnel.
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Updates the datbase with the tunnel IP. All listening agents will also
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be notified about the new tunnel IP.
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"""
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tunnel_ip = kwargs.get('tunnel_ip')
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# Update the database with the IP
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tunnel = ovs_db_v2.add_tunnel_endpoint(tunnel_ip)
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tunnels = ovs_db_v2.get_tunnel_endpoints()
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entry = dict()
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entry['tunnels'] = tunnels
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# Notify all other listening agents
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self.notifier.tunnel_update(rpc_context, tunnel.ip_address,
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tunnel.id)
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# Return the list of tunnels IP's to the agent
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return entry
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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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self.topic_tunnel_update = topics.get_topic_name(topic,
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constants.TUNNEL,
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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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def tunnel_update(self, context, tunnel_ip, tunnel_id):
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self.fanout_cast(context,
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self.make_msg('tunnel_update',
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tunnel_ip=tunnel_ip,
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tunnel_id=tunnel_id),
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topic=self.topic_tunnel_update)
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class OVSQuantumPluginV2(db_base_plugin_v2.QuantumDbPluginV2,
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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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agentschedulers_db.AgentSchedulerDbMixin,
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portbindings_db.PortBindingMixin):
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"""Implement the Quantum abstractions using Open vSwitch.
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Depending on whether tunneling is enabled, either a GRE tunnel or
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a new VLAN is created for each network. An agent is relied upon to
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perform the actual OVS 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/quantum/+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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QuantumDbPluginV2 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", "router", "ext-gw-mode",
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"binding", "quotas", "security-group",
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"agent", "extraroute", "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_if_noop_driver(aliases)
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self._aliases = aliases
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return self._aliases
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def __init__(self, configfile=None):
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self.extra_binding_dict = {
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portbindings.VIF_TYPE: portbindings.VIF_TYPE_OVS,
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portbindings.CAPABILITIES: {
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portbindings.CAP_PORT_FILTER:
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'security-group' in self.supported_extension_aliases}}
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ovs_db_v2.initialize()
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self._parse_network_vlan_ranges()
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ovs_db_v2.sync_vlan_allocations(self.network_vlan_ranges)
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self.tenant_network_type = cfg.CONF.ovs.tenant_network_type
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if self.tenant_network_type not in [constants.TYPE_LOCAL,
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constants.TYPE_VLAN,
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constants.TYPE_GRE,
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constants.TYPE_NONE]:
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LOG.error(_("Invalid tenant_network_type: %s. "
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"Agent terminated!"),
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self.tenant_network_type)
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sys.exit(1)
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self.enable_tunneling = cfg.CONF.ovs.enable_tunneling
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self.tunnel_id_ranges = []
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if self.enable_tunneling:
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self._parse_tunnel_id_ranges()
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ovs_db_v2.sync_tunnel_allocations(self.tunnel_id_ranges)
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elif self.tenant_network_type == constants.TYPE_GRE:
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LOG.error(_("Tunneling disabled but tenant_network_type is 'gre'. "
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"Agent terminated!"))
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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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self.router_scheduler = importutils.import_object(
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cfg.CONF.router_scheduler_driver)
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def setup_rpc(self):
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# RPC support
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self.topic = topics.PLUGIN
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self.conn = rpc.create_connection(new=True)
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self.notifier = AgentNotifierApi(topics.AGENT)
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self.dhcp_agent_notifier = dhcp_rpc_agent_api.DhcpAgentNotifyAPI()
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self.l3_agent_notifier = l3_rpc_agent_api.L3AgentNotify
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self.callbacks = OVSRpcCallbacks(self.notifier)
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self.dispatcher = self.callbacks.create_rpc_dispatcher()
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self.conn.create_consumer(self.topic, self.dispatcher,
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fanout=False)
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# Consume from all consumers in a thread
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self.conn.consume_in_thread()
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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.ovs.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 _parse_tunnel_id_ranges(self):
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for entry in cfg.CONF.ovs.tunnel_id_ranges:
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entry = entry.strip()
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try:
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tun_min, tun_max = entry.split(':')
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self.tunnel_id_ranges.append((int(tun_min), int(tun_max)))
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except ValueError as ex:
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LOG.error(_("Invalid tunnel ID range: "
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"'%(range)s' - %(e)s. Agent terminated!"),
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{'range': entry, 'e': ex})
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sys.exit(1)
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LOG.info(_("Tunnel ID ranges: %s"), self.tunnel_id_ranges)
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def _extend_network_dict_provider(self, context, network):
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binding = ovs_db_v2.get_network_binding(context.session,
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network['id'])
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network[provider.NETWORK_TYPE] = binding.network_type
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if binding.network_type == constants.TYPE_GRE:
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network[provider.PHYSICAL_NETWORK] = None
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network[provider.SEGMENTATION_ID] = binding.segmentation_id
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elif binding.network_type == 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.network_type == constants.TYPE_VLAN:
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network[provider.PHYSICAL_NETWORK] = binding.physical_network
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network[provider.SEGMENTATION_ID] = binding.segmentation_id
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elif binding.network_type == 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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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 q_exc.InvalidInput(error_message=msg)
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elif network_type == 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 q_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 == 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 q_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 q_exc.InvalidInput(error_message=msg)
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elif network_type == constants.TYPE_GRE:
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if not self.enable_tunneling:
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msg = _("GRE networks are not enabled")
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raise q_exc.InvalidInput(error_message=msg)
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if physical_network_set:
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msg = _("provider:physical_network specified for GRE "
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"network")
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raise q_exc.InvalidInput(error_message=msg)
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else:
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physical_network = None
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if not segmentation_id_set:
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msg = _("provider:segmentation_id required")
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raise q_exc.InvalidInput(error_message=msg)
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elif network_type == 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 q_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 q_exc.InvalidInput(error_message=msg)
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else:
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segmentation_id = None
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else:
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msg = _("provider:network_type %s not supported") % network_type
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raise q_exc.InvalidInput(error_message=msg)
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if network_type in [constants.TYPE_VLAN, 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 "
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"%s") % physical_network
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raise q_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 q_exc.InvalidInput(error_message=msg)
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return (network_type, physical_network, segmentation_id)
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def _check_provider_update(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
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msg = _("Plugin does not support updating provider attributes")
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raise q_exc.InvalidInput(error_message=msg)
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def create_network(self, context, network):
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(network_type, physical_network,
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segmentation_id) = self._process_provider_create(context,
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network['network'])
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session = context.session
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#set up default security groups
|
|
tenant_id = self._get_tenant_id_for_create(
|
|
context, network['network'])
|
|
self._ensure_default_security_group(context, tenant_id)
|
|
|
|
with session.begin(subtransactions=True):
|
|
if not network_type:
|
|
# tenant network
|
|
network_type = self.tenant_network_type
|
|
if network_type == constants.TYPE_NONE:
|
|
raise q_exc.TenantNetworksDisabled()
|
|
elif network_type == constants.TYPE_VLAN:
|
|
(physical_network,
|
|
segmentation_id) = ovs_db_v2.reserve_vlan(session)
|
|
elif network_type == constants.TYPE_GRE:
|
|
segmentation_id = ovs_db_v2.reserve_tunnel(session)
|
|
# no reservation needed for TYPE_LOCAL
|
|
else:
|
|
# provider network
|
|
if network_type in [constants.TYPE_VLAN, constants.TYPE_FLAT]:
|
|
ovs_db_v2.reserve_specific_vlan(session, physical_network,
|
|
segmentation_id)
|
|
elif network_type == constants.TYPE_GRE:
|
|
ovs_db_v2.reserve_specific_tunnel(session, segmentation_id)
|
|
# no reservation needed for TYPE_LOCAL
|
|
net = super(OVSQuantumPluginV2, self).create_network(context,
|
|
network)
|
|
ovs_db_v2.add_network_binding(session, net['id'], network_type,
|
|
physical_network, segmentation_id)
|
|
|
|
self._process_l3_create(context, network['network'], net['id'])
|
|
self._extend_network_dict_provider(context, net)
|
|
self._extend_network_dict_l3(context, net)
|
|
# note - exception will rollback entire transaction
|
|
LOG.debug(_("Created network: %s"), net['id'])
|
|
return net
|
|
|
|
def update_network(self, context, id, network):
|
|
self._check_provider_update(context, network['network'])
|
|
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
net = super(OVSQuantumPluginV2, self).update_network(context, id,
|
|
network)
|
|
self._process_l3_update(context, network['network'], id)
|
|
self._extend_network_dict_provider(context, net)
|
|
self._extend_network_dict_l3(context, net)
|
|
return net
|
|
|
|
def delete_network(self, context, id):
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
binding = ovs_db_v2.get_network_binding(session, id)
|
|
super(OVSQuantumPluginV2, self).delete_network(context, id)
|
|
if binding.network_type == constants.TYPE_GRE:
|
|
ovs_db_v2.release_tunnel(session, binding.segmentation_id,
|
|
self.tunnel_id_ranges)
|
|
elif binding.network_type in [constants.TYPE_VLAN,
|
|
constants.TYPE_FLAT]:
|
|
ovs_db_v2.release_vlan(session, binding.physical_network,
|
|
binding.segmentation_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(OVSQuantumPluginV2, self).get_network(context,
|
|
id, None)
|
|
self._extend_network_dict_provider(context, net)
|
|
self._extend_network_dict_l3(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(OVSQuantumPluginV2,
|
|
self).get_networks(context, filters, None, sorts,
|
|
limit, marker, page_reverse)
|
|
for net in nets:
|
|
self._extend_network_dict_provider(context, net)
|
|
self._extend_network_dict_l3(context, net)
|
|
|
|
return [self._fields(net, fields) for net in nets]
|
|
|
|
def create_port(self, context, port):
|
|
# Set port status as 'DOWN'. This will be updated by agent
|
|
port['port']['status'] = q_const.PORT_STATUS_DOWN
|
|
port_data = port['port']
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
self._ensure_default_security_group_on_port(context, port)
|
|
sgids = self._get_security_groups_on_port(context, port)
|
|
port = super(OVSQuantumPluginV2, 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):
|
|
session = context.session
|
|
need_port_update_notify = False
|
|
with session.begin(subtransactions=True):
|
|
original_port = super(OVSQuantumPluginV2, self).get_port(
|
|
context, id)
|
|
updated_port = super(OVSQuantumPluginV2, self).update_port(
|
|
context, id, port)
|
|
need_port_update_notify = self.update_security_group_on_port(
|
|
context, id, port, original_port, updated_port)
|
|
self._process_portbindings_create_and_update(context,
|
|
port['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:
|
|
binding = ovs_db_v2.get_network_binding(None,
|
|
updated_port['network_id'])
|
|
self.notifier.port_update(context, updated_port,
|
|
binding.network_type,
|
|
binding.segmentation_id,
|
|
binding.physical_network)
|
|
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):
|
|
self.disassociate_floatingips(context, id)
|
|
port = self.get_port(context, id)
|
|
self._delete_port_security_group_bindings(context, id)
|
|
super(OVSQuantumPluginV2, self).delete_port(context, id)
|
|
|
|
self.notify_security_groups_member_updated(context, port)
|