6e57c26a9c
1/3 part of blueprint quantum-scheduler This patch adds agent management support to l3-agent and plugin-agent (ovs and linuxbridge). Change-Id: Iebc272f45c7530c995f32ef3729b11cd76779385
631 lines
28 KiB
Python
631 lines
28 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.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.db import agents_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 l3_db
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from quantum.db import l3_rpc_base
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# NOTE: quota_db cannot be removed, it is for db model
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from quantum.db import quota_db
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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.extensions import securitygroup as ext_sg
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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.openvswitch.common import config
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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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from quantum import policy
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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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locals())
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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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locals())
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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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locals())
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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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l3_db.L3_NAT_db_mixin,
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sg_db_rpc.SecurityGroupServerRpcMixin,
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agents_db.AgentDbMixin):
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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 operations. Name mangling is used in order to ensure it
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# is qualified by class
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__native_bulk_support = True
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supported_extension_aliases = ["provider", "router",
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"binding", "quotas", "security-group",
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"agent"]
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network_view = "extension:provider_network:view"
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network_set = "extension:provider_network:set"
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binding_view = "extension:port_binding:view"
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binding_set = "extension:port_binding:set"
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def __init__(self, configfile=None):
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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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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.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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self.network_vlan_ranges = {}
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for entry in cfg.CONF.OVS.network_vlan_ranges:
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entry = entry.strip()
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if ':' in entry:
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try:
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physical_network, vlan_min, vlan_max = entry.split(':')
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self._add_network_vlan_range(physical_network.strip(),
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int(vlan_min),
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int(vlan_max))
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except ValueError as ex:
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LOG.error(_("Invalid network VLAN 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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else:
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self._add_network(entry)
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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 _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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# TODO(rkukura) Use core mechanism for attribute authorization
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# when available.
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def _check_view_auth(self, context, resource, action):
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return policy.check(context, action, resource)
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def _enforce_set_auth(self, context, resource, action):
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policy.enforce(context, action, resource)
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def _extend_network_dict_provider(self, context, network):
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if self._check_view_auth(context, network, self.network_view):
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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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# Authorize before exposing plugin details to client
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self._enforce_set_auth(context, attrs, self.network_set)
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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 segmentation_id < 1 or segmentation_id > 4094:
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msg = _("provider:segmentation_id out of range "
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"(1 through 4094)")
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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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# Authorize before exposing plugin details to client
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self._enforce_set_auth(context, attrs, self.network_set)
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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
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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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with session.begin(subtransactions=True):
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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 == 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):
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
nets = super(OVSQuantumPluginV2, self).get_networks(context,
|
|
filters,
|
|
None)
|
|
for net in nets:
|
|
self._extend_network_dict_provider(context, net)
|
|
self._extend_network_dict_l3(context, net)
|
|
|
|
# TODO(rkukura): Filter on extended provider attributes.
|
|
nets = self._filter_nets_l3(context, nets, filters)
|
|
|
|
return [self._fields(net, fields) for net in nets]
|
|
|
|
def _extend_port_dict_binding(self, context, port):
|
|
if self._check_view_auth(context, port, self.binding_view):
|
|
port[portbindings.VIF_TYPE] = portbindings.VIF_TYPE_OVS
|
|
port[portbindings.CAPABILITIES] = {
|
|
portbindings.CAP_PORT_FILTER:
|
|
'security-group' in self.supported_extension_aliases}
|
|
return port
|
|
|
|
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
|
|
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_port_create_security_group(
|
|
context, port['id'], sgids)
|
|
self._extend_port_dict_security_group(context, port)
|
|
#Note(nati): In order to allow dhcp packets,
|
|
# changes for dhcp ip should be notifified
|
|
if port['device_owner'] == q_const.DEVICE_OWNER_DHCP:
|
|
self.notifier.security_groups_provider_updated(context)
|
|
else:
|
|
self.notifier.security_groups_member_updated(
|
|
context, port.get(ext_sg.SECURITYGROUPS))
|
|
return self._extend_port_dict_binding(context, port)
|
|
|
|
def get_port(self, context, id, fields=None):
|
|
with context.session.begin(subtransactions=True):
|
|
port = super(OVSQuantumPluginV2, self).get_port(context,
|
|
id, fields)
|
|
self._extend_port_dict_security_group(context, port)
|
|
self._extend_port_dict_binding(context, port)
|
|
return self._fields(port, fields)
|
|
|
|
def get_ports(self, context, filters=None, fields=None):
|
|
with context.session.begin(subtransactions=True):
|
|
ports = super(OVSQuantumPluginV2, self).get_ports(
|
|
context, filters, fields)
|
|
#TODO(nati) filter by security group
|
|
for port in ports:
|
|
self._extend_port_dict_security_group(context, port)
|
|
self._extend_port_dict_binding(context, port)
|
|
return [self._fields(port, fields) for port in ports]
|
|
|
|
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)
|
|
|
|
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 self._extend_port_dict_binding(context, 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.notifier.security_groups_member_updated(
|
|
context, port.get(ext_sg.SECURITYGROUPS))
|