d2a5c0f982
Implements blueprint nec-distribute-router Two types of neutron router will be supported: l3-agent and distributed. A type can be specified through "provider" attribute of a router. The naming of the attribute "provider" is intentional since I plan to support the service provider framework for router in the future and would like to make it easy to migrate. distributed router in NEC OpenFLow controller now does not support NAT, so l3-agent and distributed router coexists. To achieve it, l3-agent scheudler logic is modified in NEC plugin to exclude distributed routers from candidates of floating IP hosting routers. To support the above feature, the following related changes are done: - Adds a new driver to PFC driver which supports OpenFlow based router support in NEC OpenFlow products in PFlow v5. - Update ofc_client to extract detail error message from OpenFlow controller This commit also changes the following outside of NEC plugin: - Makes L3 agent notifiers configurable. l3-agent router and OpenFlow distributed router can coexist. Notication to l3-agent should be done only when routers are hosted by l3-agent, so we need custom L3 agent notifiers to filter non l3-agent routers. - Split test_agent_scheduler base class (in OVS plugin) into the base setup and testcases. By doing so we can implement custom testcases related to agent scheduler. Change-Id: I538201742950a61b92fb05c49a9256bc96ae9014
93 lines
3.4 KiB
Python
93 lines
3.4 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2013 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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import sqlalchemy as sa
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from sqlalchemy import orm
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from sqlalchemy.orm import exc as sa_exc
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from neutron.db import l3_db
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from neutron.db import models_v2
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from neutron.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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class RouterProvider(models_v2.model_base.BASEV2):
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"""Represents a binding of router_id to provider."""
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provider = sa.Column(sa.String(255))
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router_id = sa.Column(sa.String(36),
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sa.ForeignKey('routers.id', ondelete="CASCADE"),
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primary_key=True)
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router = orm.relationship(l3_db.Router, uselist=False,
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backref=orm.backref('provider', uselist=False,
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lazy='joined',
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cascade='delete'))
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def _get_router_providers_query(query, provider=None, router_ids=None):
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if provider:
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query = query.filter_by(provider=provider)
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if router_ids:
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column = RouterProvider.router_id
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query = query.filter(column.in_(router_ids))
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return query
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def get_router_providers(session, provider=None, router_ids=None):
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"""Retrieve a list of a pair of router ID and its provider."""
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query = session.query(RouterProvider)
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query = _get_router_providers_query(query, provider, router_ids)
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return [{'provider': router.provider, 'router_id': router.router_id}
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for router in query]
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def get_routers_by_provider(session, provider, router_ids=None):
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"""Retrieve a list of router IDs with the given provider."""
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query = session.query(RouterProvider.router_id)
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query = _get_router_providers_query(query, provider, router_ids)
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return [router[0] for router in query]
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def get_router_count_by_provider(session, provider, tenant_id=None):
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"""Return the number of routers with the given provider."""
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query = session.query(RouterProvider).filter_by(provider=provider)
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if tenant_id:
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query = (query.join('router').
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filter(l3_db.Router.tenant_id == tenant_id))
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return query.count()
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def get_provider_by_router(session, router_id):
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"""Retrieve a provider of the given router."""
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try:
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binding = (session.query(RouterProvider).
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filter_by(router_id=router_id).
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one())
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except sa_exc.NoResultFound:
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return None
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return binding.provider
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def add_router_provider_binding(session, provider, router_id):
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"""Add a router provider association."""
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LOG.debug(_("Add provider binding "
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"(router=%(router_id)s, provider=%(provider)s)"),
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{'router_id': router_id, 'provider': provider})
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binding = RouterProvider(provider=provider, router_id=router_id)
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session.add(binding)
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return binding
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