223 lines
10 KiB
Python
223 lines
10 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# Copyright 2012 NEC Corporation. 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: Ryota MIBU
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# @author: Akihiro MOTOKI
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import netaddr
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from neutron.common import utils
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from neutron.openstack.common import log as logging
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from neutron.plugins.nec.common import config
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from neutron.plugins.nec.common import exceptions as nexc
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from neutron.plugins.nec.db import api as ndb
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from neutron.plugins.nec import drivers
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LOG = logging.getLogger(__name__)
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class OFCManager(object):
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"""This class manages an OpenFlow Controller and map resources.
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This class manage an OpenFlow Controller (OFC) with a driver specified in
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a configuration of this plugin. This keeps mappings between IDs on Neutron
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and OFC for various entities such as Tenant, Network and Filter. A Port on
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OFC is identified by a switch ID 'datapath_id' and a port number 'port_no'
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of the switch. An ID named as 'ofc_*' is used to identify resource on OFC.
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"""
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def __init__(self, plugin):
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self.driver = drivers.get_driver(config.OFC.driver)(config.OFC)
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self.plugin = plugin
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def _get_ofc_id(self, context, resource, neutron_id):
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return ndb.get_ofc_id_lookup_both(context.session,
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resource, neutron_id)
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def _exists_ofc_item(self, context, resource, neutron_id):
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return ndb.exists_ofc_item_lookup_both(context.session,
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resource, neutron_id)
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def _add_ofc_item(self, context, resource, neutron_id, ofc_id):
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# Ensure a new item is added to the new mapping table
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ndb.add_ofc_item(context.session, resource, neutron_id, ofc_id)
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def _del_ofc_item(self, context, resource, neutron_id):
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ndb.del_ofc_item_lookup_both(context.session, resource, neutron_id)
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def ensure_ofc_tenant(self, context, tenant_id):
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if not self.exists_ofc_tenant(context, tenant_id):
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self.create_ofc_tenant(context, tenant_id)
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def create_ofc_tenant(self, context, tenant_id):
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desc = "ID=%s at OpenStack." % tenant_id
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ofc_tenant_id = self.driver.create_tenant(desc, tenant_id)
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self._add_ofc_item(context, "ofc_tenant", tenant_id, ofc_tenant_id)
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def exists_ofc_tenant(self, context, tenant_id):
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return self._exists_ofc_item(context, "ofc_tenant", tenant_id)
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def delete_ofc_tenant(self, context, tenant_id):
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ofc_tenant_id = self._get_ofc_id(context, "ofc_tenant", tenant_id)
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ofc_tenant_id = self.driver.convert_ofc_tenant_id(
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context, ofc_tenant_id)
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self.driver.delete_tenant(ofc_tenant_id)
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self._del_ofc_item(context, "ofc_tenant", tenant_id)
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def create_ofc_network(self, context, tenant_id, network_id,
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network_name=None):
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ofc_tenant_id = self._get_ofc_id(context, "ofc_tenant", tenant_id)
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ofc_tenant_id = self.driver.convert_ofc_tenant_id(
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context, ofc_tenant_id)
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desc = "ID=%s Name=%s at Neutron." % (network_id, network_name)
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ofc_net_id = self.driver.create_network(ofc_tenant_id, desc,
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network_id)
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self._add_ofc_item(context, "ofc_network", network_id, ofc_net_id)
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def exists_ofc_network(self, context, network_id):
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return self._exists_ofc_item(context, "ofc_network", network_id)
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def delete_ofc_network(self, context, network_id, network):
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ofc_net_id = self._get_ofc_id(context, "ofc_network", network_id)
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ofc_net_id = self.driver.convert_ofc_network_id(
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context, ofc_net_id, network['tenant_id'])
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self.driver.delete_network(ofc_net_id)
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self._del_ofc_item(context, "ofc_network", network_id)
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def create_ofc_port(self, context, port_id, port):
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ofc_net_id = self._get_ofc_id(context, "ofc_network",
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port['network_id'])
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ofc_net_id = self.driver.convert_ofc_network_id(
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context, ofc_net_id, port['tenant_id'])
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portinfo = ndb.get_portinfo(context.session, port_id)
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if not portinfo:
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raise nexc.PortInfoNotFound(id=port_id)
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# Associate packet filters
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filters = self.plugin.get_packet_filters_for_port(context, port)
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if filters is not None:
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params = {'filters': filters}
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else:
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params = {}
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ofc_port_id = self.driver.create_port(ofc_net_id, portinfo, port_id,
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**params)
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self._add_ofc_item(context, "ofc_port", port_id, ofc_port_id)
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def exists_ofc_port(self, context, port_id):
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return self._exists_ofc_item(context, "ofc_port", port_id)
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def delete_ofc_port(self, context, port_id, port):
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ofc_port_id = self._get_ofc_id(context, "ofc_port", port_id)
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ofc_port_id = self.driver.convert_ofc_port_id(
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context, ofc_port_id, port['tenant_id'], port['network_id'])
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self.driver.delete_port(ofc_port_id)
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self._del_ofc_item(context, "ofc_port", port_id)
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def create_ofc_packet_filter(self, context, filter_id, filter_dict):
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ofc_net_id = self._get_ofc_id(context, "ofc_network",
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filter_dict['network_id'])
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ofc_net_id = self.driver.convert_ofc_network_id(
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context, ofc_net_id, filter_dict['tenant_id'])
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in_port_id = filter_dict.get('in_port')
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portinfo = None
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if in_port_id:
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portinfo = ndb.get_portinfo(context.session, in_port_id)
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if not portinfo:
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raise nexc.PortInfoNotFound(id=in_port_id)
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# Collect ports to be associated with the filter
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apply_ports = ndb.get_active_ports_on_ofc(
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context, filter_dict['network_id'], in_port_id)
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ofc_pf_id = self.driver.create_filter(ofc_net_id,
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filter_dict, portinfo, filter_id,
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apply_ports)
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self._add_ofc_item(context, "ofc_packet_filter", filter_id, ofc_pf_id)
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def update_ofc_packet_filter(self, context, filter_id, filter_dict):
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ofc_pf_id = self._get_ofc_id(context, "ofc_packet_filter", filter_id)
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ofc_pf_id = self.driver.convert_ofc_filter_id(context, ofc_pf_id)
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self.driver.update_filter(ofc_pf_id, filter_dict)
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def exists_ofc_packet_filter(self, context, filter_id):
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return self._exists_ofc_item(context, "ofc_packet_filter", filter_id)
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def delete_ofc_packet_filter(self, context, filter_id):
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ofc_pf_id = self._get_ofc_id(context, "ofc_packet_filter", filter_id)
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ofc_pf_id = self.driver.convert_ofc_filter_id(context, ofc_pf_id)
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self.driver.delete_filter(ofc_pf_id)
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self._del_ofc_item(context, "ofc_packet_filter", filter_id)
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def create_ofc_router(self, context, tenant_id, router_id, name=None):
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ofc_tenant_id = self._get_ofc_id(context, "ofc_tenant", tenant_id)
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ofc_tenant_id = self.driver.convert_ofc_tenant_id(
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context, ofc_tenant_id)
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desc = "ID=%s Name=%s at Neutron." % (router_id, name)
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ofc_router_id = self.driver.create_router(ofc_tenant_id, router_id,
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desc)
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self._add_ofc_item(context, "ofc_router", router_id, ofc_router_id)
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def exists_ofc_router(self, context, router_id):
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return self._exists_ofc_item(context, "ofc_router", router_id)
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def delete_ofc_router(self, context, router_id, router):
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ofc_router_id = self._get_ofc_id(context, "ofc_router", router_id)
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self.driver.delete_router(ofc_router_id)
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self._del_ofc_item(context, "ofc_router", router_id)
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def add_ofc_router_interface(self, context, router_id, port_id, port):
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# port must have the following fields:
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# network_id, cidr, ip_address, mac_address
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ofc_router_id = self._get_ofc_id(context, "ofc_router", router_id)
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ofc_net_id = self._get_ofc_id(context, "ofc_network",
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port['network_id'])
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ip_address = '%s/%s' % (port['ip_address'],
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netaddr.IPNetwork(port['cidr']).prefixlen)
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mac_address = port['mac_address']
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ofc_inf_id = self.driver.add_router_interface(
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ofc_router_id, ofc_net_id, ip_address, mac_address)
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# Use port mapping table to maintain an interface of OFC router
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self._add_ofc_item(context, "ofc_port", port_id, ofc_inf_id)
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def delete_ofc_router_interface(self, context, router_id, port_id):
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# Use port mapping table to maintain an interface of OFC router
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ofc_inf_id = self._get_ofc_id(context, "ofc_port", port_id)
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self.driver.delete_router_interface(ofc_inf_id)
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self._del_ofc_item(context, "ofc_port", port_id)
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def update_ofc_router_route(self, context, router_id, new_routes):
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ofc_router_id = self._get_ofc_id(context, "ofc_router", router_id)
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ofc_routes = self.driver.list_router_routes(ofc_router_id)
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route_dict = {}
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cur_routes = []
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for r in ofc_routes:
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key = ','.join((r['destination'], r['nexthop']))
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route_dict[key] = r['id']
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del r['id']
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cur_routes.append(r)
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added, removed = utils.diff_list_of_dict(cur_routes, new_routes)
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for r in removed:
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key = ','.join((r['destination'], r['nexthop']))
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route_id = route_dict[key]
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self.driver.delete_router_route(route_id)
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for r in added:
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self.driver.add_router_route(ofc_router_id, r['destination'],
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r['nexthop'])
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