78aae2093d
Add one more validation to check if LB subnet is connected to a router that already setup gateway on external network. Change-Id: Ic8e9227534a78f18a57ed18cfebe9b400907a98a
181 lines
8.1 KiB
Python
181 lines
8.1 KiB
Python
# Copyright 2017 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 neutron_lib.callbacks import events
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from neutron_lib.callbacks import registry
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from neutron_lib.callbacks import resources
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from neutron_lib import exceptions as n_exc
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from oslo_log import helpers as log_helpers
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from oslo_log import log as logging
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from oslo_utils import excutils
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from vmware_nsx._i18n import _
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from vmware_nsx.db import db as nsx_db
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from vmware_nsx.services.lbaas import base_mgr
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from vmware_nsx.services.lbaas import lb_const
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from vmware_nsx.services.lbaas.nsx_v3 import lb_utils
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from vmware_nsxlib.v3 import exceptions as nsxlib_exc
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from vmware_nsxlib.v3 import utils
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LOG = logging.getLogger(__name__)
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class EdgeLoadBalancerManager(base_mgr.Nsxv3LoadbalancerBaseManager):
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@log_helpers.log_method_call
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def __init__(self):
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super(EdgeLoadBalancerManager, self).__init__()
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registry.subscribe(
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self._handle_subnet_gw_change,
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resources.SUBNET, events.AFTER_UPDATE)
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@log_helpers.log_method_call
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def create(self, context, lb):
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if lb_utils.validate_lb_subnet(context, self.core_plugin,
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lb.vip_subnet_id):
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self.lbv2_driver.load_balancer.successful_completion(context, lb)
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else:
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msg = (_('Cannot create lb on subnet %(sub)s for '
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'loadbalancer %(lb)s. The subnet needs to connect a '
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'router which is already set gateway.') %
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{'sub': lb.vip_subnet_id, 'lb': lb.id})
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raise n_exc.BadRequest(resource='lbaas-subnet', msg=msg)
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@log_helpers.log_method_call
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def update(self, context, old_lb, new_lb):
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vs_client = self.core_plugin.nsxlib.load_balancer.virtual_server
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app_client = self.core_plugin.nsxlib.load_balancer.application_profile
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if new_lb.name != old_lb.name:
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for listener in new_lb.listeners:
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binding = nsx_db.get_nsx_lbaas_listener_binding(
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context.session, new_lb.id, listener.id)
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if binding:
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vs_id = binding['lb_vs_id']
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app_profile_id = binding['app_profile_id']
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new_lb_name = new_lb.name[:utils.MAX_TAG_LEN]
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try:
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# Update tag on virtual server with new lb name
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vs = vs_client.get(vs_id)
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updated_tags = utils.update_v3_tags(
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vs['tags'], [{'scope': lb_const.LB_LB_NAME,
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'tag': new_lb_name}])
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vs_client.update(vs_id, tags=updated_tags)
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# Update tag on application profile with new lb name
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app_profile = app_client.get(app_profile_id)
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app_client.update(
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app_profile_id, tags=updated_tags,
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resource_type=app_profile['resource_type'])
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except nsxlib_exc.ManagerError:
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with excutils.save_and_reraise_exception():
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self.lbv2_driver.pool.failed_completion(context,
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new_lb)
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LOG.error('Failed to update tag %(tag)s for lb '
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'%(lb)s', {'tag': updated_tags,
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'lb': new_lb.name})
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self.lbv2_driver.load_balancer.successful_completion(context, new_lb)
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@log_helpers.log_method_call
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def delete(self, context, lb):
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service_client = self.core_plugin.nsxlib.load_balancer.service
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lb_binding = nsx_db.get_nsx_lbaas_loadbalancer_binding(
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context.session, lb.id)
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if lb_binding:
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lb_service_id = lb_binding['lb_service_id']
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nsx_router_id = lb_binding['lb_router_id']
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try:
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lb_service = service_client.get(lb_service_id)
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except nsxlib_exc.ManagerError:
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LOG.warning("LB service %(lbs)s is not found",
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{'lbs': lb_service_id})
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else:
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vs_list = lb_service.get('virtual_server_ids')
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if not vs_list:
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try:
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service_client.delete(lb_service_id)
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# If there is no lb service attached to the router,
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# update the router advertise_lb_vip flag to false.
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router_client = self.core_plugin.nsxlib.logical_router
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router_client.update_advertisement(
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nsx_router_id, advertise_lb_vip=False)
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except nsxlib_exc.ManagerError:
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self.lbv2_driver.load_balancer.failed_completion(
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context, lb, delete=True)
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msg = (_('Failed to delete lb service %(lbs)s from nsx'
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) % {'lbs': lb_service_id})
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raise n_exc.BadRequest(resource='lbaas-lb', msg=msg)
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nsx_db.delete_nsx_lbaas_loadbalancer_binding(
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context.session, lb.id)
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self.lbv2_driver.load_balancer.successful_completion(
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context, lb, delete=True)
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@log_helpers.log_method_call
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def refresh(self, context, lb):
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# TODO(tongl): implememnt
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pass
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@log_helpers.log_method_call
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def stats(self, context, lb):
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# Since multiple LBaaS loadbalancer can share the same LB service,
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# get the corresponding virtual servers' stats instead of LB service.
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stats = {'active_connections': 0,
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'bytes_in': 0,
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'bytes_out': 0,
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'total_connections': 0}
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service_client = self.core_plugin.nsxlib.load_balancer.service
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lb_binding = nsx_db.get_nsx_lbaas_loadbalancer_binding(
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context.session, lb.id)
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vs_list = self._get_lb_virtual_servers(context, lb)
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if lb_binding:
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lb_service_id = lb_binding.get('lb_service_id')
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try:
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rsp = service_client.get_stats(lb_service_id)
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if rsp:
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for vs in rsp['virtual_servers']:
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# Skip the virtual server that doesn't belong
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# to this loadbalancer
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if vs['virtual_server_id'] not in vs_list:
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continue
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vs_stats = vs['statistics']
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for stat in lb_const.LB_STATS_MAP:
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lb_stat = lb_const.LB_STATS_MAP[stat]
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stats[stat] += vs_stats[lb_stat]
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except nsxlib_exc.ManagerError:
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msg = _('Failed to retrieve stats from LB service '
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'for loadbalancer %(lb)s') % {'lb': lb.id}
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raise n_exc.BadRequest(resource='lbaas-lb', msg=msg)
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return stats
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def _get_lb_virtual_servers(self, context, lb):
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# Get all virtual servers that belong to this loadbalancer
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vs_list = []
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for listener in lb.listeners:
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vs_binding = nsx_db.get_nsx_lbaas_listener_binding(
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context.session, lb.id, listener.id)
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if vs_binding:
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vs_list.append(vs_binding.get('lb_vs_id'))
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return vs_list
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def _handle_subnet_gw_change(self, *args, **kwargs):
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# As the Edge appliance doesn't use DHCP, we should change the
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# default gateway here when the subnet GW changes.
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orig = kwargs['original_subnet']
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updated = kwargs['subnet']
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if orig['gateway_ip'] == updated['gateway_ip']:
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return
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