# vim: tabstop=4 shiftwidth=4 softtabstop=4 # Copyright 2012, Nachi Ueno, NTT MCL, Inc. # 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 neutron.common import exceptions as exc 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_db from neutron.db import models_v2 from neutron.extensions.flavor import (FLAVOR_NETWORK, FLAVOR_ROUTER) from neutron.openstack.common import importutils from neutron.openstack.common import log as logging from neutron.plugins.metaplugin.common import config # noqa from neutron.plugins.metaplugin import meta_db_v2 from neutron.plugins.metaplugin.meta_models_v2 import (NetworkFlavor, RouterFlavor) LOG = logging.getLogger(__name__) # Metaplugin Exceptions class FlavorNotFound(exc.NotFound): message = _("Flavor %(flavor)s could not be found") class FaildToAddFlavorBinding(exc.NeutronException): message = _("Failed to add flavor binding") class MetaPluginV2(db_base_plugin_v2.NeutronDbPluginV2, external_net_db.External_net_db_mixin, extraroute_db.ExtraRoute_db_mixin): def __init__(self, configfile=None): LOG.debug(_("Start initializing metaplugin")) self.supported_extension_aliases = \ cfg.CONF.META.supported_extension_aliases.split(',') self.supported_extension_aliases += ['flavor', 'external-net', 'router', 'ext-gw-mode', 'extraroute'] # Ignore config option overapping def _is_opt_registered(opts, opt): if opt.dest in opts: return True else: return False cfg._is_opt_registered = _is_opt_registered # Keep existing tables if multiple plugin use same table name. db.model_base.NeutronBase.__table_args__ = {'keep_existing': True} self.plugins = {} plugin_list = [plugin_set.split(':') for plugin_set in cfg.CONF.META.plugin_list.split(',')] for flavor, plugin_provider in plugin_list: self.plugins[flavor] = self._load_plugin(plugin_provider) self.l3_plugins = {} l3_plugin_list = [plugin_set.split(':') for plugin_set in cfg.CONF.META.l3_plugin_list.split(',')] for flavor, plugin_provider in l3_plugin_list: if flavor in self.plugins: self.l3_plugins[flavor] = self.plugins[flavor] else: # For l3 only plugin self.l3_plugins[flavor] = self._load_plugin(plugin_provider) self.default_flavor = cfg.CONF.META.default_flavor if self.default_flavor not in self.plugins: raise exc.Invalid(_('default_flavor %s is not plugin list') % self.default_flavor) self.default_l3_flavor = cfg.CONF.META.default_l3_flavor if self.default_l3_flavor not in self.l3_plugins: raise exc.Invalid(_('default_l3_flavor %s is not plugin list') % self.default_l3_flavor) db.configure_db() self.extension_map = {} if not cfg.CONF.META.extension_map == '': extension_list = [method_set.split(':') for method_set in cfg.CONF.META.extension_map.split(',')] for method_name, flavor in extension_list: self.extension_map[method_name] = flavor self.default_flavor = cfg.CONF.META.default_flavor def _load_plugin(self, plugin_provider): LOG.debug(_("Plugin location: %s"), plugin_provider) plugin_klass = importutils.import_class(plugin_provider) return plugin_klass() def _get_plugin(self, flavor): if flavor not in self.plugins: raise FlavorNotFound(flavor=flavor) return self.plugins[flavor] def _get_l3_plugin(self, flavor): if flavor not in self.l3_plugins: raise FlavorNotFound(flavor=flavor) return self.l3_plugins[flavor] def __getattr__(self, key): # At first, try to pickup extension command from extension_map if key in self.extension_map: flavor = self.extension_map[key] plugin = self._get_plugin(flavor) if plugin and hasattr(plugin, key): return getattr(plugin, key) # Second, try to match extension method in order of plugin list for flavor, plugin in self.plugins.items(): if hasattr(plugin, key): return getattr(plugin, key) # if no plugin support the method, then raise raise AttributeError def _extend_network_dict(self, context, network): flavor = self._get_flavor_by_network_id(context, network['id']) network[FLAVOR_NETWORK] = flavor def _is_l3_plugin(self, plugin): if hasattr(plugin, 'supported_extension_aliases'): return 'router' in plugin.supported_extension_aliases return False def create_network(self, context, network): n = network['network'] flavor = n.get(FLAVOR_NETWORK) if str(flavor) not in self.plugins: flavor = self.default_flavor plugin = self._get_plugin(flavor) with context.session.begin(subtransactions=True): net = plugin.create_network(context, network) if not self._is_l3_plugin(plugin): self._process_l3_create(context, net, network['network']) LOG.debug(_("Created network: %(net_id)s with flavor " "%(flavor)s"), {'net_id': net['id'], 'flavor': flavor}) try: meta_db_v2.add_network_flavor_binding(context.session, flavor, str(net['id'])) except Exception: LOG.exception(_('Failed to add flavor bindings')) plugin.delete_network(context, net['id']) raise FaildToAddFlavorBinding() LOG.debug(_("Created network: %s"), net['id']) self._extend_network_dict(context, net) return net def update_network(self, context, id, network): flavor = meta_db_v2.get_flavor_by_network(context.session, id) plugin = self._get_plugin(flavor) with context.session.begin(subtransactions=True): net = plugin.update_network(context, id, network) if not self._is_l3_plugin(plugin): self._process_l3_update(context, net, network['network']) return net def delete_network(self, context, id): flavor = meta_db_v2.get_flavor_by_network(context.session, id) plugin = self._get_plugin(flavor) return plugin.delete_network(context, id) def get_network(self, context, id, fields=None): flavor = meta_db_v2.get_flavor_by_network(context.session, id) plugin = self._get_plugin(flavor) net = plugin.get_network(context, id, fields) net['id'] = id if not fields or FLAVOR_NETWORK in fields: self._extend_network_dict(context, net) if fields and 'id' not in fields: del net['id'] return net def get_networks_with_flavor(self, context, filters=None, fields=None): collection = self._model_query(context, models_v2.Network) model = NetworkFlavor collection = collection.join(model, models_v2.Network.id == model.network_id) if filters: for key, value in filters.iteritems(): if key == FLAVOR_NETWORK: column = NetworkFlavor.flavor else: column = getattr(models_v2.Network, key, None) if column: collection = collection.filter(column.in_(value)) return [self._make_network_dict(c, fields) for c in collection] def get_networks(self, context, filters=None, fields=None): nets = self.get_networks_with_flavor(context, filters, None) if filters: nets = self._filter_nets_l3(context, nets, filters) nets = [self.get_network(context, net['id'], fields) for net in nets] return nets def _get_flavor_by_network_id(self, context, network_id): return meta_db_v2.get_flavor_by_network(context.session, network_id) def _get_flavor_by_router_id(self, context, router_id): return meta_db_v2.get_flavor_by_router(context.session, router_id) def _get_plugin_by_network_id(self, context, network_id): flavor = self._get_flavor_by_network_id(context, network_id) return self._get_plugin(flavor) def create_port(self, context, port): p = port['port'] if 'network_id' not in p: raise exc.NotFound plugin = self._get_plugin_by_network_id(context, p['network_id']) return plugin.create_port(context, port) def update_port(self, context, id, port): port_in_db = self.get_port(context, id) plugin = self._get_plugin_by_network_id(context, port_in_db['network_id']) return plugin.update_port(context, id, port) def delete_port(self, context, id, l3_port_check=True): port_in_db = self.get_port(context, id) plugin = self._get_plugin_by_network_id(context, port_in_db['network_id']) if l3_port_check: self.prevent_l3_port_deletion(context, id) self.disassociate_floatingips(context, id) return plugin.delete_port(context, id, l3_port_check) def create_subnet(self, context, subnet): s = subnet['subnet'] if 'network_id' not in s: raise exc.NotFound plugin = self._get_plugin_by_network_id(context, s['network_id']) return plugin.create_subnet(context, subnet) def update_subnet(self, context, id, subnet): s = self.get_subnet(context, id) plugin = self._get_plugin_by_network_id(context, s['network_id']) return plugin.update_subnet(context, id, subnet) def delete_subnet(self, context, id): s = self.get_subnet(context, id) plugin = self._get_plugin_by_network_id(context, s['network_id']) return plugin.delete_subnet(context, id) def _extend_router_dict(self, context, router): flavor = self._get_flavor_by_router_id(context, router['id']) router[FLAVOR_ROUTER] = flavor def create_router(self, context, router): r = router['router'] flavor = r.get(FLAVOR_ROUTER) if str(flavor) not in self.l3_plugins: flavor = self.default_l3_flavor plugin = self._get_l3_plugin(flavor) with context.session.begin(subtransactions=True): r_in_db = plugin.create_router(context, router) LOG.debug(_("Created router: %(router_id)s with flavor " "%(flavor)s"), {'router_id': r_in_db['id'], 'flavor': flavor}) meta_db_v2.add_router_flavor_binding(context.session, flavor, str(r_in_db['id'])) LOG.debug(_("Created router: %s"), r_in_db['id']) self._extend_router_dict(context, r_in_db) return r_in_db def update_router(self, context, id, router): flavor = meta_db_v2.get_flavor_by_router(context.session, id) plugin = self._get_l3_plugin(flavor) return plugin.update_router(context, id, router) def delete_router(self, context, id): flavor = meta_db_v2.get_flavor_by_router(context.session, id) plugin = self._get_l3_plugin(flavor) return plugin.delete_router(context, id) def get_router(self, context, id, fields=None): flavor = meta_db_v2.get_flavor_by_router(context.session, id) plugin = self._get_l3_plugin(flavor) router = plugin.get_router(context, id, fields) if not fields or FLAVOR_ROUTER in fields: self._extend_router_dict(context, router) return router def get_routers_with_flavor(self, context, filters=None, fields=None): collection = self._model_query(context, l3_db.Router) r_model = RouterFlavor collection = collection.join(r_model, l3_db.Router.id == r_model.router_id) if filters: for key, value in filters.iteritems(): if key == FLAVOR_ROUTER: column = RouterFlavor.flavor else: column = getattr(l3_db.Router, key, None) if column: collection = collection.filter(column.in_(value)) return [self._make_router_dict(c, fields) for c in collection] def get_routers(self, context, filters=None, fields=None): routers = self.get_routers_with_flavor(context, filters, None) return [self.get_router(context, router['id'], fields) for router in routers]