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OpenStack Study: ryu_neutron_plugin.py**** CubicPower OpenStack Study ****
# vim: tabstop=4 shiftwidth=4 softtabstop=4 # Copyright 2012 Isaku Yamahata # # All Rights Reserved. # # 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. # @author: Isaku Yamahata from oslo.config import cfg from ryu.app import client from ryu.app import rest_nw_id from neutron.agent import securitygroups_rpc as sg_rpc from neutron.common import constants as q_const from neutron.common import exceptions as n_exc from neutron.common import rpc as q_rpc from neutron.common import topics from neutron.db import api as db from neutron.db import db_base_plugin_v2 from neutron.db import dhcp_rpc_base from neutron.db import external_net_db from neutron.db import extraroute_db from neutron.db import l3_gwmode_db from neutron.db import l3_rpc_base from neutron.db import models_v2 from neutron.db import portbindings_base from neutron.db import securitygroups_rpc_base as sg_db_rpc from neutron.extensions import portbindings from neutron.openstack.common import excutils from neutron.openstack.common import log as logging from neutron.openstack.common import rpc from neutron.openstack.common.rpc import proxy from neutron.plugins.common import constants as svc_constants from neutron.plugins.ryu.common import config # noqa from neutron.plugins.ryu.db import api_v2 as db_api_v2 LOG = logging.getLogger(__name__)
**** CubicPower OpenStack Study **** class RyuRpcCallbacks(dhcp_rpc_base.DhcpRpcCallbackMixin,
l3_rpc_base.L3RpcCallbackMixin,
sg_db_rpc.SecurityGroupServerRpcCallbackMixin): RPC_API_VERSION = '1.1'
**** CubicPower OpenStack Study **** def __init__(self, ofp_rest_api_addr): self.ofp_rest_api_addr = ofp_rest_api_addr
**** CubicPower OpenStack Study **** def create_rpc_dispatcher(self): return q_rpc.PluginRpcDispatcher([self])
**** CubicPower OpenStack Study **** def get_ofp_rest_api(self, context, **kwargs): LOG.debug(_("get_ofp_rest_api: %s"), self.ofp_rest_api_addr) return self.ofp_rest_api_addr @classmethod
**** CubicPower OpenStack Study **** def get_port_from_device(cls, device): port = db_api_v2.get_port_from_device(device) if port: port['device'] = device return port
**** CubicPower OpenStack Study **** class AgentNotifierApi(proxy.RpcProxy,
sg_rpc.SecurityGroupAgentRpcApiMixin): BASE_RPC_API_VERSION = '1.0'
**** CubicPower OpenStack Study **** def __init__(self, topic): super(AgentNotifierApi, self).__init__( topic=topic, default_version=self.BASE_RPC_API_VERSION) self.topic_port_update = topics.get_topic_name(topic, topics.PORT, topics.UPDATE)
**** CubicPower OpenStack Study **** def port_update(self, context, port): self.fanout_cast(context, self.make_msg('port_update', port=port), topic=self.topic_port_update)
**** CubicPower OpenStack Study **** class RyuNeutronPluginV2(db_base_plugin_v2.NeutronDbPluginV2,
external_net_db.External_net_db_mixin,
extraroute_db.ExtraRoute_db_mixin,
l3_gwmode_db.L3_NAT_db_mixin,
sg_db_rpc.SecurityGroupServerRpcMixin,
portbindings_base.PortBindingBaseMixin): _supported_extension_aliases = ["external-net", "router", "ext-gw-mode", "extraroute", "security-group", "binding", "quotas"] @property
**** CubicPower OpenStack Study **** def supported_extension_aliases(self): if not hasattr(self, '_aliases'): aliases = self._supported_extension_aliases[:] sg_rpc.disable_security_group_extension_by_config(aliases) self._aliases = aliases return self._aliases
**** CubicPower OpenStack Study **** def __init__(self, configfile=None): super(RyuNeutronPluginV2, self).__init__() self.base_binding_dict = { portbindings.VIF_TYPE: portbindings.VIF_TYPE_OVS, portbindings.VIF_DETAILS: { # TODO(rkukura): Replace with new VIF security details portbindings.CAP_PORT_FILTER: 'security-group' in self.supported_extension_aliases, portbindings.OVS_HYBRID_PLUG: True } } portbindings_base.register_port_dict_function() self.tunnel_key = db_api_v2.TunnelKey( cfg.CONF.OVS.tunnel_key_min, cfg.CONF.OVS.tunnel_key_max) self.ofp_api_host = cfg.CONF.OVS.openflow_rest_api if not self.ofp_api_host: raise n_exc.Invalid(_('Invalid configuration. check ryu.ini')) self.client = client.OFPClient(self.ofp_api_host) self.tun_client = client.TunnelClient(self.ofp_api_host) self.iface_client = client.NeutronIfaceClient(self.ofp_api_host) for nw_id in rest_nw_id.RESERVED_NETWORK_IDS: if nw_id != rest_nw_id.NW_ID_UNKNOWN: self.client.update_network(nw_id) self._setup_rpc() # register known all network list on startup self._create_all_tenant_network()
**** CubicPower OpenStack Study **** def _setup_rpc(self): self.service_topics = {svc_constants.CORE: topics.PLUGIN, svc_constants.L3_ROUTER_NAT: topics.L3PLUGIN} self.conn = rpc.create_connection(new=True) self.notifier = AgentNotifierApi(topics.AGENT) self.callbacks = RyuRpcCallbacks(self.ofp_api_host) self.dispatcher = self.callbacks.create_rpc_dispatcher() for svc_topic in self.service_topics.values(): self.conn.create_consumer(svc_topic, self.dispatcher, fanout=False) self.conn.consume_in_thread()
**** CubicPower OpenStack Study **** def _create_all_tenant_network(self): for net in db_api_v2.network_all_tenant_list(): self.client.update_network(net.id) for tun in self.tunnel_key.all_list(): self.tun_client.update_tunnel_key(tun.network_id, tun.tunnel_key) session = db.get_session() for port in session.query(models_v2.Port): self.iface_client.update_network_id(port.id, port.network_id)
**** CubicPower OpenStack Study **** def _client_create_network(self, net_id, tunnel_key): self.client.create_network(net_id) self.tun_client.create_tunnel_key(net_id, tunnel_key)
**** CubicPower OpenStack Study **** def _client_delete_network(self, net_id): client.ignore_http_not_found( lambda: self.client.delete_network(net_id)) client.ignore_http_not_found( lambda: self.tun_client.delete_tunnel_key(net_id))
**** CubicPower OpenStack Study **** def create_network(self, context, 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) net = super(RyuNeutronPluginV2, self).create_network(context, network) self._process_l3_create(context, net, network['network']) tunnel_key = self.tunnel_key.allocate(session, net['id']) try: self._client_create_network(net['id'], tunnel_key) except Exception: with excutils.save_and_reraise_exception(): self._client_delete_network(net['id']) return net
**** CubicPower OpenStack Study **** def update_network(self, context, id, network): session = context.session with session.begin(subtransactions=True): net = super(RyuNeutronPluginV2, self).update_network(context, id, network) self._process_l3_update(context, net, network['network']) return net
**** CubicPower OpenStack Study **** def delete_network(self, context, id): self._client_delete_network(id) session = context.session with session.begin(subtransactions=True): self.tunnel_key.delete(session, id) super(RyuNeutronPluginV2, self).delete_network(context, id)
**** CubicPower OpenStack Study **** def create_port(self, context, port): session = context.session port_data = port['port'] with session.begin(subtransactions=True): self._ensure_default_security_group_on_port(context, port) sgids = self._get_security_groups_on_port(context, port) port = super(RyuNeutronPluginV2, self).create_port(context, port) self._process_portbindings_create_and_update(context, port_data, port) self._process_port_create_security_group( context, port, sgids) self.notify_security_groups_member_updated(context, port) self.iface_client.create_network_id(port['id'], port['network_id']) return port
**** CubicPower OpenStack Study **** 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) with context.session.begin(subtransactions=True): self.disassociate_floatingips(context, id) port = self.get_port(context, id) self._delete_port_security_group_bindings(context, id) super(RyuNeutronPluginV2, self).delete_port(context, id) self.notify_security_groups_member_updated(context, port)
**** CubicPower OpenStack Study **** def update_port(self, context, id, port): deleted = port['port'].get('deleted', False) session = context.session need_port_update_notify = False with session.begin(subtransactions=True): original_port = super(RyuNeutronPluginV2, self).get_port( context, id) updated_port = super(RyuNeutronPluginV2, self).update_port( context, id, port) self._process_portbindings_create_and_update(context, port['port'], updated_port) need_port_update_notify = self.update_security_group_on_port( context, id, port, original_port, updated_port) need_port_update_notify |= self.is_security_group_member_updated( context, original_port, updated_port) need_port_update_notify |= (original_port['admin_state_up'] != updated_port['admin_state_up']) if need_port_update_notify: self.notifier.port_update(context, updated_port) if deleted: db_api_v2.set_port_status(session, id, q_const.PORT_STATUS_DOWN) return updated_port
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