196 lines
8.3 KiB
Python
196 lines
8.3 KiB
Python
# Copyright 2017 Platform9 Systems Inc.(http://www.platform9.com)
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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 neutron_lib
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from distutils.version import LooseVersion
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from oslo_log import log as logging
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from neutron.common import exceptions
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from neutron.common import gceconf
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from neutron.common import gceutils
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from neutron.db import common_db_mixin
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from neutron.db import extraroute_db
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from neutron.db import l3_db
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from neutron.db import l3_dvrscheduler_db
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from neutron.db import l3_gwmode_db
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from neutron.db import l3_hamode_db
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from neutron.db import l3_hascheduler_db
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from neutron.plugins.common import constants
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from neutron.quota import resource_registry
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from neutron.services import service_base
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from neutron_lib import constants as n_const
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LOG = logging.getLogger(__name__)
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if LooseVersion(neutron_lib.__version__) < LooseVersion("1.0.0"):
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router = l3_db.Router
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floating_ip = l3_db.FloatingIP
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plugin_type = constants.L3_ROUTER_NAT
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else:
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from neutron.db.models import l3
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from neutron_lib.plugins import constants as plugin_constants
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from neutron_lib.services import base as service_base
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router = l3.Router
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floating_ip = l3.FloatingIP
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plugin_type = plugin_constants.L3
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class GceRouterPlugin(
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service_base.ServicePluginBase, common_db_mixin.CommonDbMixin,
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extraroute_db.ExtraRoute_db_mixin, l3_hamode_db.L3_HA_NAT_db_mixin,
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l3_gwmode_db.L3_NAT_db_mixin, l3_dvrscheduler_db.L3_DVRsch_db_mixin,
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l3_hascheduler_db.L3_HA_scheduler_db_mixin):
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"""Implementation of the Neutron L3 Router Service Plugin.
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This class implements a L3 service plugin that provides
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router and floatingip resources and manages associated
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request/response.
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All DB related work is implemented in classes
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l3_db.L3_NAT_db_mixin, l3_hamode_db.L3_HA_NAT_db_mixin,
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l3_dvr_db.L3_NAT_with_dvr_db_mixin, and extraroute_db.ExtraRoute_db_mixin.
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"""
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supported_extension_aliases = [
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"dvr", "router", "ext-gw-mode", "extraroute", "l3_agent_scheduler",
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"l3-ha"
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]
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@resource_registry.tracked_resources(router=router,
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floatingip=floating_ip)
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def __init__(self):
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super(GceRouterPlugin, self).__init__()
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l3_db.subscribe()
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self.gce_zone = gceconf.zone
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self.gce_region = gceconf.region
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self.gce_project = gceconf.project_id
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self.gce_svc_key = gceconf.service_key_path
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self.gce_svc = gceutils.get_gce_service(self.gce_svc_key)
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LOG.info("GCE Router plugin init with %s project, %s region" %
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(self.gce_project, self.gce_region))
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def get_plugin_type(self):
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return plugin_type
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def get_plugin_description(self):
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"""returns string description of the plugin."""
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return ("GCE L3 Router Service Plugin for basic L3 forwarding"
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" between (L2) Neutron networks and access to external"
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" networks via a NAT gateway.")
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def _cleanup_floatingip(self, compute, project, region, floatingip):
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gceutils.release_floatingip(compute, project, region, floatingip)
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gceutils.delete_floatingip(compute, project, region, floatingip)
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LOG.info('Released GCE static IP %s' % floatingip)
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def create_floatingip(self, context, floatingip):
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compute, project, region = self.gce_svc, self.gce_project, self.gce_region
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public_ip_allocated = None
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try:
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public_ip_allocated = gceutils.allocate_floatingip(
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compute, project, region)
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LOG.info("Created GCE static IP %s" % public_ip_allocated)
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floatingip_dict = floatingip['floatingip']
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floatingip_dict['floating_ip_address'] = public_ip_allocated
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if floatingip_dict.get('port_id'):
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port_id = floatingip_dict['port_id']
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self._associate_floatingip_to_port(
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context, public_ip_allocated, port_id)
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except Exception as e:
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LOG.exception("Error in Creation/Allocating floating IP")
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if public_ip_allocated:
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self._cleanup_floatingip(compute, project, region,
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public_ip_allocated)
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raise e
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try:
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res = super(GceRouterPlugin, self).create_floatingip(
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context, floatingip,
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initial_status=n_const.FLOATINGIP_STATUS_DOWN)
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except Exception as e:
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LOG.exception("Error in adding floating IP")
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if public_ip_allocated:
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self._cleanup_floatingip(compute, project, region,
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public_ip_allocated)
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raise e
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return res
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def _associate_floatingip_to_port(self, context, floating_ip_address,
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port_id):
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compute, project, zone = self.gce_svc, self.gce_project, self.gce_zone
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port = self._core_plugin.get_port(context, port_id)
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fixed_ip_address = None
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if len(port['fixed_ips']) > 0:
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fixed_ip = port['fixed_ips'][0]
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if 'ip_address' in fixed_ip:
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fixed_ip_address = fixed_ip['ip_address']
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if fixed_ip_address:
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LOG.info('Found fixed ip %s for port %s' %
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(fixed_ip_address, port_id))
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gceutils.assign_floatingip(compute, project, zone,
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fixed_ip_address, floating_ip_address)
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else:
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raise exceptions.FloatingIpSetupException(
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'Unable to find fixed ip for port %s' % port_id)
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def update_floatingip(self, context, id, floatingip):
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floatingip_dict = floatingip['floatingip']
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orig_floatingip = super(GceRouterPlugin, self).get_floatingip(
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context, id)
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public_ip_allocated = orig_floatingip['floating_ip_address']
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port_id = floatingip_dict['port_id']
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compute, project, region = self.gce_svc, self.gce_project, self.gce_region
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gceutils.release_floatingip(compute, project, region,
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public_ip_allocated)
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if port_id:
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self._associate_floatingip_to_port(context, public_ip_allocated,
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port_id)
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return super(GceRouterPlugin, self).update_floatingip(
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context, id, floatingip)
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def delete_floatingip(self, context, id):
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floating_ip = super(GceRouterPlugin, self).get_floatingip(context, id)
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public_ip_allocated = floating_ip['floating_ip_address']
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compute, project, region = self.gce_svc, self.gce_project, self.gce_region
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self._cleanup_floatingip(compute, project, region, public_ip_allocated)
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return super(GceRouterPlugin, self).delete_floatingip(context, id)
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def create_router(self, context, router):
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LOG.info("Creating router %s" % router['router']['name'])
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return super(GceRouterPlugin, self).create_router(context, router)
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def delete_router(self, context, id):
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LOG.info("Deleting router %s" % id)
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return super(GceRouterPlugin, self).delete_router(context, id)
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def update_router(self, context, id, router):
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LOG.info("Updating router %s" % id)
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return super(GceRouterPlugin, self).update_router(context, id, router)
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def add_router_interface(self, context, router_id, interface_info):
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LOG.info("Adding interface %s to router %s" %
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(interface_info, router_id))
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return super(GceRouterPlugin, self).add_router_interface(
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context, router_id, interface_info)
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def remove_router_interface(self, context, router_id, interface_info):
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LOG.info("Deleting interface %s from router %s" %
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(interface_info, router_id))
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return super(GceRouterPlugin, self).remove_router_interface(
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context, router_id, interface_info)
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