415 lines
18 KiB
Python
415 lines
18 KiB
Python
# Copyright (c) 2012 OpenStack, LLC.
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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 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 api as db_api
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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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from quantum.extensions import providernet as provider
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from quantum.openstack.common import cfg
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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.linuxbridge.common import constants
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from quantum.plugins.linuxbridge.db import l2network_db_v2 as db
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from quantum import policy
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LOG = logging.getLogger(__name__)
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class LinuxBridgeRpcCallbacks(dhcp_rpc_base.DhcpRpcCallbackMixin,
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l3_rpc_base.L3RpcCallbackMixin):
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# Set RPC API version to 1.0 by default.
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RPC_API_VERSION = '1.0'
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# Device names start with "tap"
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TAP_PREFIX_LEN = 3
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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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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 %s details requested from %s", device, agent_id)
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port = db.get_port_from_device(device[self.TAP_PREFIX_LEN:])
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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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entry = {'device': device,
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'physical_network': binding.physical_network,
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'vlan_id': binding.vlan_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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# Set the port status to UP
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db.set_port_status(port['id'], q_const.PORT_STATUS_ACTIVE)
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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 %s no longer exists on %s", device, agent_id)
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port = db.get_port_from_device(device[self.TAP_PREFIX_LEN:])
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if port:
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entry = {'device': device,
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'exists': True}
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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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class AgentNotifierApi(proxy.RpcProxy):
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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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'''
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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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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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self.fanout_cast(context,
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self.make_msg('port_update',
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port=port,
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physical_network=physical_network,
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vlan_id=vlan_id),
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topic=self.topic_port_update)
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class LinuxBridgePluginV2(db_base_plugin_v2.QuantumDbPluginV2,
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l3_db.L3_NAT_db_mixin):
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"""Implement the Quantum 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/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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"""
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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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def __init__(self):
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db.initialize()
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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 [constants.TYPE_LOCAL,
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constants.TYPE_VLAN,
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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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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.topic = topics.PLUGIN
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self.conn = rpc.create_connection(new=True)
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self.callbacks = LinuxBridgeRpcCallbacks()
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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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self.notifier = AgentNotifierApi(topics.AGENT)
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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.VLANS.network_vlan_ranges:
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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,
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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: '%s' - %s. "
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"Service terminated!" %
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(entry, 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.debug("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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# REVISIT(rkukura) Use core mechanism for attribute authorization
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# when available.
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def _check_provider_view_auth(self, context, network):
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return policy.check(context,
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"extension:provider_network:view",
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network)
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def _enforce_provider_set_auth(self, context, network):
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return policy.enforce(context,
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"extension:provider_network:set",
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network)
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def _extend_network_dict_provider(self, context, network):
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if self._check_provider_view_auth(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] = 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] = 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] = 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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# Authorize before exposing plugin details to client
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self._enforce_provider_set_auth(context, attrs)
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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_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 = 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 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 %s" %
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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_provider_set_auth(context, attrs)
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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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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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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:
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raise q_exc.TenantNetworksDisabled()
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elif network_type == 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 [constants.TYPE_VLAN, 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, network['network'], net['id'])
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self._extend_network_dict_provider(context, net)
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self._extend_network_dict_l3(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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self._check_provider_update(context, 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, network['network'], id)
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self._extend_network_dict_provider(context, net)
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self._extend_network_dict_l3(context, net)
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return net
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def delete_network(self, context, id):
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session = context.session
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with session.begin(subtransactions=True):
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binding = db.get_network_binding(session, id)
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result = super(LinuxBridgePluginV2, self).delete_network(context,
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id)
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if binding.vlan_id != constants.LOCAL_VLAN_ID:
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db.release_network(session, binding.physical_network,
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binding.vlan_id, self.network_vlan_ranges)
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# the network_binding record is deleted via cascade from
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# the network record, so explicit removal is not necessary
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self.notifier.network_delete(context, id)
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def get_network(self, context, id, fields=None):
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net = super(LinuxBridgePluginV2, self).get_network(context, id, None)
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self._extend_network_dict_provider(context, net)
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self._extend_network_dict_l3(context, net)
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return self._fields(net, fields)
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def get_networks(self, context, filters=None, fields=None):
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nets = super(LinuxBridgePluginV2, self).get_networks(context, filters,
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None)
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for net in nets:
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self._extend_network_dict_provider(context, net)
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self._extend_network_dict_l3(context, net)
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# TODO(rkukura): Filter on extended provider attributes.
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nets = self._filter_nets_l3(context, nets, filters)
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return [self._fields(net, fields) for net in nets]
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def update_port(self, context, id, port):
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original_port = super(LinuxBridgePluginV2, self).get_port(context,
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id)
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port = super(LinuxBridgePluginV2, self).update_port(context, id, port)
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if original_port['admin_state_up'] != port['admin_state_up']:
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binding = db.get_network_binding(context.session,
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port['network_id'])
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self.notifier.port_update(context, port,
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binding.physical_network,
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binding.vlan_id)
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return port
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def delete_port(self, context, id, l3_port_check=True):
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# if needed, check to see if this is a port owned by
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# and l3-router. If so, we should prevent deletion.
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if l3_port_check:
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self.prevent_l3_port_deletion(context, id)
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self.disassociate_floatingips(context, id)
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return super(LinuxBridgePluginV2, self).delete_port(context, id)
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