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