d4c3047ba4
Implements blueprint embrane-neutron-plugin This commit implements the main Embrane plugin, which covers route and extratoute extensions. The plugin will rely on existing plugins for leveraging L2 networks, for now it only supports OpenVSwitch and vlan networks, but more supports are to come if the model is approved (or a different one is suggested). Change-Id: I90aff8ec4324bd3a7c59c411374db6a118d1a72b
155 lines
5.5 KiB
Python
155 lines
5.5 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2013 Embrane, 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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#
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# @author: Ivar Lazzaro, Embrane, Inc.
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from functools import wraps
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from heleosapi import exceptions as h_exc
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from neutron.openstack.common import log as logging
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from neutron.plugins.embrane.common import constants as p_con
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LOG = logging.getLogger(__name__)
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handlers = dict()
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def handler(event, handler):
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def wrap(f):
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if event not in handler.keys():
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new_func_list = [f]
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handler[event] = new_func_list
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else:
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handler[event].append(f)
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@wraps(f)
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def wrapped_f(*args, **kwargs):
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return f(*args, **kwargs)
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return wrapped_f
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return wrap
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@handler(p_con.Events.CREATE_ROUTER, handlers)
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def _create_dva_and_assign_address(api, tenant_id, neutron_router,
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flavor, utif_info=None,
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ip_allocation_info=None):
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"""Creates a new router, and assign the gateway interface if any."""
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dva = api.create_router(tenant_id=tenant_id,
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router_id=neutron_router["id"],
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name=neutron_router["name"],
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flavor=flavor,
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up=neutron_router["admin_state_up"])
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try:
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if utif_info:
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api.grow_interface(utif_info, neutron_router["admin_state_up"],
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tenant_id, neutron_router["id"])
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if ip_allocation_info:
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dva = api.allocate_address(neutron_router["id"],
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neutron_router["admin_state_up"],
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ip_allocation_info)
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except h_exc.PreliminaryOperationsFailed as ex:
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raise h_exc.BrokenInterface(err_msg=ex.message)
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state = api.extract_dva_state(dva)
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return state
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@handler(p_con.Events.UPDATE_ROUTER, handlers)
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def _update_dva_and_assign_address(api, tenant_id, neutron_router,
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utif_info=None, ip_allocation_info=None,
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routes_info=[]):
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name = neutron_router["name"]
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up = neutron_router["admin_state_up"]
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r_id = neutron_router["id"]
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if ip_allocation_info or routes_info:
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up = True
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dva = api.update_dva(tenant_id=tenant_id, router_id=r_id, name=name,
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up=up, utif_info=utif_info)
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if ip_allocation_info:
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api.allocate_address(r_id, up, ip_allocation_info)
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if routes_info:
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api.delete_extra_routes(r_id, up)
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api.set_extra_routes(r_id, neutron_router["admin_state_up"],
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routes_info)
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return api.extract_dva_state(dva)
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@handler(p_con.Events.DELETE_ROUTER, handlers)
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def _delete_dva(api, tenant_id, neutron_router):
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try:
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api.delete_dva(tenant_id, neutron_router["id"])
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except h_exc.DvaNotFound:
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LOG.warning(_("The router %s had no physical representation,"
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"likely already deleted"), neutron_router["id"])
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return p_con.Status.DELETED
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@handler(p_con.Events.GROW_ROUTER_IF, handlers)
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def _grow_dva_iface_and_assign_address(api, tenant_id, neutron_router,
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utif_info=None,
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ip_allocation_info=None):
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try:
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dva = api.grow_interface(utif_info, neutron_router["admin_state_up"],
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tenant_id, neutron_router["id"])
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if ip_allocation_info:
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dva = api.allocate_address(neutron_router["id"],
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neutron_router["admin_state_up"],
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ip_allocation_info)
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except h_exc.PreliminaryOperationsFailed as ex:
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raise h_exc.BrokenInterface(err_msg=ex.message)
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state = api.extract_dva_state(dva)
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return state
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@handler(p_con.Events.SHRINK_ROUTER_IF, handlers)
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def _shrink_dva_iface(api, tenant_id, neutron_router, port_id):
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try:
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dva = api.shrink_interface(tenant_id, neutron_router["id"],
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neutron_router["admin_state_up"], port_id)
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except h_exc.InterfaceNotFound:
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LOG.warning(_("Interface %s not found in the heleos back-end,"
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"likely already deleted"), port_id)
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except h_exc.PreliminaryOperationsFailed as ex:
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raise h_exc.BrokenInterface(err_msg=ex.message)
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state = api.extract_dva_state(dva)
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return state
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@handler(p_con.Events.SET_NAT_RULE, handlers)
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def _create_nat_rule(api, tenant_id, neutron_router, nat_info=None):
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dva = api.create_nat_entry(neutron_router["id"],
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neutron_router["admin_state_up"], nat_info)
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state = api.extract_dva_state(dva)
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return state
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@handler(p_con.Events.RESET_NAT_RULE, handlers)
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def _delete_nat_rule(api, tenant_id, neutron_router, floating_ip_id):
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dva = api.remove_nat_entry(neutron_router["id"],
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neutron_router["admin_state_up"],
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floating_ip_id)
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state = api.extract_dva_state(dva)
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return state
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