# Copyright (c) 2012 OpenStack, LLC. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or # implied. # See the License for the specific language governing permissions and # limitations under the License. import sys from quantum.agent import securitygroups_rpc as sg_rpc from quantum.api.v2 import attributes from quantum.common import constants as q_const from quantum.common import exceptions as q_exc from quantum.common import rpc as q_rpc from quantum.common import topics from quantum.common import utils from quantum.db import api as db_api from quantum.db import db_base_plugin_v2 from quantum.db import dhcp_rpc_base from quantum.db import l3_db from quantum.db import l3_rpc_base # NOTE: quota_db cannot be removed, it is for db model from quantum.db import quota_db from quantum.db import securitygroups_rpc_base as sg_db_rpc from quantum.extensions import portbindings from quantum.extensions import providernet as provider from quantum.extensions import securitygroup as ext_sg from quantum.openstack.common import cfg from quantum.openstack.common import log as logging from quantum.openstack.common import rpc from quantum.openstack.common.rpc import proxy from quantum.plugins.linuxbridge.common import constants from quantum.plugins.linuxbridge.db import l2network_db_v2 as db from quantum import policy LOG = logging.getLogger(__name__) class LinuxBridgeRpcCallbacks(dhcp_rpc_base.DhcpRpcCallbackMixin, l3_rpc_base.L3RpcCallbackMixin, sg_db_rpc.SecurityGroupServerRpcCallbackMixin): RPC_API_VERSION = '1.1' # Device names start with "tap" # history # 1.1 Support Security Group RPC TAP_PREFIX_LEN = 3 def create_rpc_dispatcher(self): '''Get the rpc dispatcher for this manager. If a manager would like to set an rpc API version, or support more than one class as the target of rpc messages, override this method. ''' return q_rpc.PluginRpcDispatcher([self]) @classmethod def get_port_from_device(cls, device): port = db.get_port_from_device(device[cls.TAP_PREFIX_LEN:]) if port: port['device'] = device return port def get_device_details(self, rpc_context, **kwargs): """Agent requests device details""" agent_id = kwargs.get('agent_id') device = kwargs.get('device') LOG.debug(_("Device %(device)s details requested from %(agent_id)s"), locals()) port = self.get_port_from_device(device) if port: binding = db.get_network_binding(db_api.get_session(), port['network_id']) entry = {'device': device, 'physical_network': binding.physical_network, 'vlan_id': binding.vlan_id, 'network_id': port['network_id'], 'port_id': port['id'], 'admin_state_up': port['admin_state_up']} new_status = (q_const.PORT_STATUS_ACTIVE if port['admin_state_up'] else q_const.PORT_STATUS_DOWN) if port['status'] != new_status: db.set_port_status(port['id'], new_status) else: entry = {'device': device} LOG.debug(_("%s can not be found in database"), device) return entry def update_device_down(self, rpc_context, **kwargs): """Device no longer exists on agent""" # (TODO) garyk - live migration and port status agent_id = kwargs.get('agent_id') device = kwargs.get('device') LOG.debug(_("Device %(device)s no longer exists on %(agent_id)s"), locals()) port = self.get_port_from_device(device) if port: entry = {'device': device, 'exists': True} if port['status'] != q_const.PORT_STATUS_DOWN: # Set port status to DOWN db.set_port_status(port['id'], q_const.PORT_STATUS_DOWN) else: entry = {'device': device, 'exists': False} LOG.debug(_("%s can not be found in database"), device) return entry def update_device_up(self, rpc_context, **kwargs): """Device is up on agent""" agent_id = kwargs.get('agent_id') device = kwargs.get('device') LOG.debug(_("Device %(device)s up %(agent_id)s"), locals()) port = self.get_port_from_device(device) if port: if port['status'] != q_const.PORT_STATUS_ACTIVE: # Set port status to ACTIVE db.set_port_status(port['id'], q_const.PORT_STATUS_ACTIVE) else: LOG.debug(_("%s can not be found in database"), device) class AgentNotifierApi(proxy.RpcProxy, sg_rpc.SecurityGroupAgentRpcApiMixin): '''Agent side of the linux bridge rpc API. API version history: 1.0 - Initial version. ''' BASE_RPC_API_VERSION = '1.0' def __init__(self, topic): super(AgentNotifierApi, self).__init__( topic=topic, default_version=self.BASE_RPC_API_VERSION) self.topic = topic self.topic_network_delete = topics.get_topic_name(topic, topics.NETWORK, topics.DELETE) self.topic_port_update = topics.get_topic_name(topic, topics.PORT, topics.UPDATE) def network_delete(self, context, network_id): self.fanout_cast(context, self.make_msg('network_delete', network_id=network_id), topic=self.topic_network_delete) def port_update(self, context, port, physical_network, vlan_id): self.fanout_cast(context, self.make_msg('port_update', port=port, physical_network=physical_network, vlan_id=vlan_id), topic=self.topic_port_update) class LinuxBridgePluginV2(db_base_plugin_v2.QuantumDbPluginV2, l3_db.L3_NAT_db_mixin, sg_db_rpc.SecurityGroupServerRpcMixin): """Implement the Quantum abstractions using Linux bridging. A new VLAN is created for each network. An agent is relied upon to perform the actual Linux bridge configuration on each host. The provider extension is also supported. As discussed in https://bugs.launchpad.net/quantum/+bug/1023156, this class could be simplified, and filtering on extended attributes could be handled, by adding support for extended attributes to the QuantumDbPluginV2 base class. When that occurs, this class should be updated to take advantage of it. The port binding extension enables an external application relay information to and from the plugin. """ # This attribute specifies whether the plugin supports or not # bulk operations. Name mangling is used in order to ensure it # is qualified by class __native_bulk_support = True supported_extension_aliases = ["provider", "router", "binding", "quotas", "security-group"] network_view = "extension:provider_network:view" network_set = "extension:provider_network:set" binding_view = "extension:port_binding:view" binding_set = "extension:port_binding:set" def __init__(self): db.initialize() self._parse_network_vlan_ranges() db.sync_network_states(self.network_vlan_ranges) self.tenant_network_type = cfg.CONF.VLANS.tenant_network_type if self.tenant_network_type not in [constants.TYPE_LOCAL, constants.TYPE_VLAN, constants.TYPE_NONE]: LOG.error(_("Invalid tenant_network_type: %s. " "Service terminated!"), self.tenant_network_type) sys.exit(1) self._setup_rpc() LOG.debug(_("Linux Bridge Plugin initialization complete")) def _setup_rpc(self): # RPC support self.topic = topics.PLUGIN self.conn = rpc.create_connection(new=True) self.callbacks = LinuxBridgeRpcCallbacks() self.dispatcher = self.callbacks.create_rpc_dispatcher() self.conn.create_consumer(self.topic, self.dispatcher, fanout=False) # Consume from all consumers in a thread self.conn.consume_in_thread() self.notifier = AgentNotifierApi(topics.AGENT) def _parse_network_vlan_ranges(self): self.network_vlan_ranges = {} for entry in cfg.CONF.VLANS.network_vlan_ranges: if ':' in entry: try: physical_network, vlan_min, vlan_max = entry.split(':') self._add_network_vlan_range(physical_network, int(vlan_min), int(vlan_max)) except ValueError as ex: LOG.error(_("Invalid network VLAN range: " "'%(entry)s' - %(ex)s. " "Service terminated!"), locals()) sys.exit(1) else: self._add_network(entry) LOG.debug(_("Network VLAN ranges: %s"), self.network_vlan_ranges) def _check_view_auth(self, context, resource, action): return policy.check(context, action, resource) def _enforce_set_auth(self, context, resource, action): policy.enforce(context, action, resource) def _add_network_vlan_range(self, physical_network, vlan_min, vlan_max): self._add_network(physical_network) self.network_vlan_ranges[physical_network].append((vlan_min, vlan_max)) def _add_network(self, physical_network): if physical_network not in self.network_vlan_ranges: self.network_vlan_ranges[physical_network] = [] # REVISIT(rkukura) Use core mechanism for attribute authorization # when available. def _extend_network_dict_provider(self, context, network): if self._check_view_auth(context, network, self.network_view): binding = db.get_network_binding(context.session, network['id']) if binding.vlan_id == constants.FLAT_VLAN_ID: network[provider.NETWORK_TYPE] = constants.TYPE_FLAT network[provider.PHYSICAL_NETWORK] = binding.physical_network network[provider.SEGMENTATION_ID] = None elif binding.vlan_id == constants.LOCAL_VLAN_ID: network[provider.NETWORK_TYPE] = constants.TYPE_LOCAL network[provider.PHYSICAL_NETWORK] = None network[provider.SEGMENTATION_ID] = None else: network[provider.NETWORK_TYPE] = constants.TYPE_VLAN network[provider.PHYSICAL_NETWORK] = binding.physical_network network[provider.SEGMENTATION_ID] = binding.vlan_id def _process_provider_create(self, context, attrs): network_type = attrs.get(provider.NETWORK_TYPE) physical_network = attrs.get(provider.PHYSICAL_NETWORK) segmentation_id = attrs.get(provider.SEGMENTATION_ID) network_type_set = attributes.is_attr_set(network_type) physical_network_set = attributes.is_attr_set(physical_network) segmentation_id_set = attributes.is_attr_set(segmentation_id) if not (network_type_set or physical_network_set or segmentation_id_set): return (None, None, None) # Authorize before exposing plugin details to client self._enforce_set_auth(context, attrs, self.network_set) if not network_type_set: msg = _("provider:network_type required") raise q_exc.InvalidInput(error_message=msg) elif network_type == constants.TYPE_FLAT: if segmentation_id_set: msg = _("provider:segmentation_id specified for flat network") raise q_exc.InvalidInput(error_message=msg) else: segmentation_id = constants.FLAT_VLAN_ID elif network_type == constants.TYPE_VLAN: if not segmentation_id_set: msg = _("provider:segmentation_id required") raise q_exc.InvalidInput(error_message=msg) if segmentation_id < 1 or segmentation_id > 4094: msg = _("provider:segmentation_id out of range " "(1 through 4094)") raise q_exc.InvalidInput(error_message=msg) elif network_type == constants.TYPE_LOCAL: if physical_network_set: msg = _("provider:physical_network specified for local " "network") raise q_exc.InvalidInput(error_message=msg) else: physical_network = None if segmentation_id_set: msg = _("provider:segmentation_id specified for local " "network") raise q_exc.InvalidInput(error_message=msg) else: segmentation_id = constants.LOCAL_VLAN_ID else: msg = _("provider:network_type %s not supported") % network_type raise q_exc.InvalidInput(error_message=msg) if network_type in [constants.TYPE_VLAN, constants.TYPE_FLAT]: if physical_network_set: if physical_network not in self.network_vlan_ranges: msg = (_("Unknown provider:physical_network %s") % physical_network) raise q_exc.InvalidInput(error_message=msg) elif 'default' in self.network_vlan_ranges: physical_network = 'default' else: msg = _("provider:physical_network required") raise q_exc.InvalidInput(error_message=msg) return (network_type, physical_network, segmentation_id) def _check_provider_update(self, context, attrs): network_type = attrs.get(provider.NETWORK_TYPE) physical_network = attrs.get(provider.PHYSICAL_NETWORK) segmentation_id = attrs.get(provider.SEGMENTATION_ID) network_type_set = attributes.is_attr_set(network_type) physical_network_set = attributes.is_attr_set(physical_network) segmentation_id_set = attributes.is_attr_set(segmentation_id) if not (network_type_set or physical_network_set or segmentation_id_set): return # Authorize before exposing plugin details to client self._enforce_set_auth(context, attrs, self.network_set) msg = _("Plugin does not support updating provider attributes") raise q_exc.InvalidInput(error_message=msg) def create_network(self, context, network): (network_type, physical_network, vlan_id) = self._process_provider_create(context, network['network']) session = context.session with session.begin(subtransactions=True): #set up default security groups tenant_id = self._get_tenant_id_for_create( context, network['network']) self._ensure_default_security_group(context, tenant_id) 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, vlan_id = db.reserve_network(session) else: # TYPE_LOCAL vlan_id = constants.LOCAL_VLAN_ID else: # provider network if network_type in [constants.TYPE_VLAN, constants.TYPE_FLAT]: db.reserve_specific_network(session, physical_network, vlan_id) # no reservation needed for TYPE_LOCAL net = super(LinuxBridgePluginV2, self).create_network(context, network) db.add_network_binding(session, net['id'], physical_network, vlan_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 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(LinuxBridgePluginV2, 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 = db.get_network_binding(session, id) super(LinuxBridgePluginV2, self).delete_network(context, id) if binding.vlan_id != constants.LOCAL_VLAN_ID: db.release_network(session, binding.physical_network, binding.vlan_id, self.network_vlan_ranges) # the network_binding record is deleted via cascade from # the network record, so explicit removal is not necessary self.notifier.network_delete(context, id) def get_network(self, context, id, fields=None): session = context.session with session.begin(subtransactions=True): net = super(LinuxBridgePluginV2, self).get_network(context, id, None) self._extend_network_dict_provider(context, net) 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(LinuxBridgePluginV2, 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_BRIDGE port[portbindings.CAPABILITIES] = { portbindings.CAP_PORT_FILTER: 'security-group' in self.supported_extension_aliases} return port def get_port(self, context, id, fields=None): with context.session.begin(subtransactions=True): port = super(LinuxBridgePluginV2, 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): res_ports = [] with context.session.begin(subtransactions=True): ports = super(LinuxBridgePluginV2, 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) res_ports.append(self._fields(port, fields)) return res_ports def create_port(self, context, 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) # Set port status as 'DOWN'. This will be updated by agent port['port']['status'] = q_const.PORT_STATUS_DOWN port = super(LinuxBridgePluginV2, self).create_port(context, port) self._process_port_create_security_group( context, port['id'], sgids) self._extend_port_dict_security_group(context, port) 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 update_port(self, context, id, port): original_port = self.get_port(context, id) session = context.session need_port_update_notify = False with session.begin(subtransactions=True): updated_port = super(LinuxBridgePluginV2, self).update_port( context, id, port) need_port_update_notify = self.update_security_group_on_port( context, id, port, original_port, updated_port) need_port_update_notify |= self.is_security_group_member_updated( context, original_port, updated_port) if original_port['admin_state_up'] != updated_port['admin_state_up']: need_port_update_notify = True if need_port_update_notify: self._notify_port_updated(context, updated_port) return 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(LinuxBridgePluginV2, self).delete_port(context, id) self.notifier.security_groups_member_updated( context, port.get(ext_sg.SECURITYGROUPS)) def _notify_port_updated(self, context, port): binding = db.get_network_binding(context.session, port['network_id']) self.notifier.port_update(context, port, binding.physical_network, binding.vlan_id)