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# Copyright 2012 Isaku Yamahata <yamahata at private email ne jp>
# <yamahata at valinux co jp>
# 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.
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.api.rpc.handlers import dhcp_rpc
from neutron.api.rpc.handlers import l3_rpc
from neutron.api.rpc.handlers import securitygroups_rpc
from neutron.common import constants as q_const
from neutron.common import exceptions as n_exc
from neutron.common import rpc as n_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 external_net_db
from neutron.db import extraroute_db
from neutron.db import l3_gwmode_db
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.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__)
class SecurityGroupServerRpcMixin(sg_db_rpc.SecurityGroupServerRpcMixin):
@classmethod
def get_port_from_device(cls, device):
port = db_api_v2.get_port_from_device(device)
if port:
port['device'] = device
return port
class RyuRpcCallbacks(n_rpc.RpcCallback):
RPC_API_VERSION = '1.1'
def __init__(self, ofp_rest_api_addr):
super(RyuRpcCallbacks, self).__init__()
self.ofp_rest_api_addr = ofp_rest_api_addr
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
class AgentNotifierApi(n_rpc.RpcProxy,
sg_rpc.SecurityGroupAgentRpcApiMixin):
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_port_update = topics.get_topic_name(topic,
topics.PORT,
topics.UPDATE)
def port_update(self, context, port):
self.fanout_cast(context,
self.make_msg('port_update', port=port),
topic=self.topic_port_update)
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,
SecurityGroupServerRpcMixin,
portbindings_base.PortBindingBaseMixin):
_supported_extension_aliases = ["external-net", "router", "ext-gw-mode",
"extraroute", "security-group",
"binding", "quotas"]
@property
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
def __init__(self, configfile=None):
super(RyuNeutronPluginV2, self).__init__()
self.base_binding_dict = self._get_base_binding_dict()
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()
def _get_base_binding_dict(self):
sg_enabled = sg_rpc.is_firewall_enabled()
vif_details = {portbindings.CAP_PORT_FILTER: sg_enabled,
portbindings.OVS_HYBRID_PLUG: sg_enabled}
binding = {portbindings.VIF_TYPE: portbindings.VIF_TYPE_OVS,
portbindings.VIF_DETAILS: vif_details}
return binding
def _setup_rpc(self):
self.service_topics = {svc_constants.CORE: topics.PLUGIN,
svc_constants.L3_ROUTER_NAT: topics.L3PLUGIN}
self.conn = n_rpc.create_connection(new=True)
self.notifier = AgentNotifierApi(topics.AGENT)
self.endpoints = [RyuRpcCallbacks(self.ofp_api_host),
securitygroups_rpc.SecurityGroupServerRpcCallback(),
dhcp_rpc.DhcpRpcCallback(),
l3_rpc.L3RpcCallback()]
for svc_topic in self.service_topics.values():
self.conn.create_consumer(svc_topic, self.endpoints, fanout=False)
self.conn.consume_in_threads()
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)
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)
def _client_delete_network(self, net_id):
RyuNeutronPluginV2._safe_client_delete_network(self.safe_reference,
net_id)
@staticmethod
def _safe_client_delete_network(safe_reference, net_id):
# Avoid handing naked plugin references to the client. When
# the client is mocked for testing, such references can
# prevent the plugin from being deallocated.
client.ignore_http_not_found(
lambda: safe_reference.client.delete_network(net_id))
client.ignore_http_not_found(
lambda: safe_reference.tun_client.delete_tunnel_key(net_id))
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
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
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)
self._process_l3_delete(context, id)
super(RyuNeutronPluginV2, self).delete_network(context, id)
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
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):
router_ids = self.disassociate_floatingips(
context, id, do_notify=False)
port = self.get_port(context, id)
self._delete_port_security_group_bindings(context, id)
super(RyuNeutronPluginV2, self).delete_port(context, id)
# now that we've left db transaction, we are safe to notify
self.notify_routers_updated(context, router_ids)
self.notify_security_groups_member_updated(context, port)
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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