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93 lines
3.5 KiB
93 lines
3.5 KiB
# Copyright 2014 VMware, Inc. |
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# 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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from oslo_config import cfg |
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import stevedore |
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from oslo_log import log |
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from neutron.i18n import _LE, _LI |
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from vmware_nsx.common import exceptions as nsx_exc |
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LOG = log.getLogger(__name__) |
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ROUTER_TYPE_DRIVERS = ["distributed", "exclusive", "shared"] |
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class RouterTypeManager(stevedore.named.NamedExtensionManager): |
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"""Manage router segment types using drivers.""" |
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def __init__(self, plugin): |
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# Mapping from type name to DriverManager |
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self.drivers = {} |
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LOG.info(_LI("Configured router type driver names: %s"), |
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ROUTER_TYPE_DRIVERS) |
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super(RouterTypeManager, self).__init__( |
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'vmware_nsx.neutron.nsxv.router_type_drivers', |
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ROUTER_TYPE_DRIVERS, |
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invoke_on_load=True, |
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invoke_args=(plugin,)) |
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LOG.info(_LI("Loaded type driver names: %s"), self.names()) |
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self._register_types() |
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self._check_tenant_router_types(cfg.CONF.nsxv.tenant_router_types) |
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def _register_types(self): |
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for ext in self: |
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router_type = ext.obj.get_type() |
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if router_type in self.drivers: |
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LOG.error(_LE("Type driver '%(new_driver)s' ignored because " |
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"type driver '%(old_driver)s' is already " |
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"registered for type '%(type)s'"), |
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{'new_driver': ext.name, |
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'old_driver': self.drivers[router_type].name, |
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'type': router_type}) |
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else: |
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self.drivers[router_type] = ext |
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LOG.info(_LI("Registered types: %s"), self.drivers.keys()) |
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def _check_tenant_router_types(self, types): |
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self.tenant_router_types = [] |
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for router_type in types: |
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if router_type in self.drivers: |
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self.tenant_router_types.append(router_type) |
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else: |
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msg = _("No type driver for tenant router_type: %s. " |
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"Service terminated!") % router_type |
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LOG.error(msg) |
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raise SystemExit(msg) |
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LOG.info(_LI("Tenant router_types: %s"), self.tenant_router_types) |
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def get_tenant_router_driver(self, context, router_type): |
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driver = self.drivers.get(router_type) |
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if driver: |
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return driver.obj |
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raise nsx_exc.NoRouterAvailable() |
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def decide_tenant_router_type(self, context, router_type=None): |
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if router_type is None: |
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for rt in self.tenant_router_types: |
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driver = self.drivers.get(rt) |
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if driver: |
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return rt |
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raise nsx_exc.NoRouterAvailable() |
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elif context.is_admin: |
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driver = self.drivers.get(router_type) |
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if driver: |
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return router_type |
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elif router_type in self.tenant_router_types: |
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driver = self.drivers.get(router_type) |
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if driver: |
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return router_type |
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raise nsx_exc.NoRouterAvailable()
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