# Copyright 2017 VMware, Inc. # All Rights Reserved # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. from neutron_lib import exceptions as n_exc from oslo_log import helpers as log_helpers from oslo_log import log as logging from oslo_utils import excutils from vmware_nsx._i18n import _ from vmware_nsx.common import exceptions as nsx_exc from vmware_nsx.db import db as nsx_db from vmware_nsx.services.lbaas import base_mgr from vmware_nsx.services.lbaas import lb_const from vmware_nsx.services.lbaas.nsx_v3 import lb_utils from vmware_nsxlib.v3 import exceptions as nsxlib_exc from vmware_nsxlib.v3 import utils LOG = logging.getLogger(__name__) class EdgePoolManager(base_mgr.Nsxv3LoadbalancerBaseManager): @log_helpers.log_method_call def __init__(self): super(EdgePoolManager, self).__init__() def _get_pool_kwargs(self, name=None, tags=None, algorithm=None, session_persistence=None): kwargs = {} if name: kwargs['display_name'] = name if tags: kwargs['tags'] = tags if algorithm: kwargs['algorithm'] = algorithm if session_persistence: kwargs['session_persistence'] = session_persistence kwargs['snat_translation'] = {'type': "LbSnatAutoMap"} return kwargs def _get_pool_tags(self, context, pool): return lb_utils.get_tags(self.core_plugin, pool.id, lb_const.LB_POOL_TYPE, pool.tenant_id, context.project_name) @log_helpers.log_method_call def create(self, context, pool): lb_id = pool.loadbalancer_id pool_client = self.core_plugin.nsxlib.load_balancer.pool vs_client = self.core_plugin.nsxlib.load_balancer.virtual_server pool_name = utils.get_name_and_uuid(pool.name or 'pool', pool.id) tags = self._get_pool_tags(context, pool) lb_algorithm = lb_const.LB_POOL_ALGORITHM_MAP.get(pool.lb_algorithm) try: kwargs = self._get_pool_kwargs(pool_name, tags, lb_algorithm) lb_pool = pool_client.create(**kwargs) nsx_db.add_nsx_lbaas_pool_binding( context.session, lb_id, pool.id, lb_pool['id']) except nsxlib_exc.ManagerError: self.lbv2_driver.pool.failed_completion(context, pool) msg = (_('Failed to create pool on NSX backend: %(pool)s') % {'pool': pool.id}) raise n_exc.BadRequest(resource='lbaas-pool', msg=msg) # The pool object can be created with either --listener or # --loadbalancer option. If listener is present, the virtual server # will be updated with the pool. Otherwise, just return. The binding # will be added later when the pool is associated with layer7 rule. if pool.listener: listener_id = pool.listener.id binding = nsx_db.get_nsx_lbaas_listener_binding( context.session, lb_id, listener_id) if binding: vs_id = binding['lb_vs_id'] try: vs_client.update(vs_id, pool_id=lb_pool['id']) except nsxlib_exc.ManagerError: with excutils.save_and_reraise_exception(): self.lbv2_driver.pool.failed_completion(context, pool) LOG.error('Failed to attach pool %s to virtual ' 'server %s', lb_pool['id'], vs_id) nsx_db.update_nsx_lbaas_pool_binding( context.session, lb_id, pool.id, vs_id) else: msg = (_("Couldn't find binding on the listener: %s") % listener_id) raise nsx_exc.NsxPluginException(err_msg=msg) self.lbv2_driver.pool.successful_completion(context, pool) @log_helpers.log_method_call def update(self, context, old_pool, new_pool): pool_client = self.core_plugin.nsxlib.load_balancer.pool pool_name = None tags = None lb_algorithm = None if new_pool.name != old_pool.name: pool_name = utils.get_name_and_uuid(new_pool.name or 'pool', new_pool.id) tags = self._get_pool_tags(context, new_pool) if new_pool.lb_algorithm != old_pool.lb_algorithm: lb_algorithm = lb_const.LB_POOL_ALGORITHM_MAP.get( new_pool.lb_algorithm) binding = nsx_db.get_nsx_lbaas_pool_binding( context.session, old_pool.loadbalancer_id, old_pool.id) if not binding: msg = (_('Cannot find pool %(pool)s binding on NSX db ' 'mapping'), {'pool': old_pool.id}) raise n_exc.BadRequest(resource='lbaas-pool', msg=msg) try: lb_pool_id = binding['lb_pool_id'] kwargs = self._get_pool_kwargs(pool_name, tags, lb_algorithm) pool_client.update(lb_pool_id, **kwargs) self.lbv2_driver.pool.successful_completion(context, new_pool) except Exception as e: with excutils.save_and_reraise_exception(): self.lbv2_driver.pool.failed_completion(context, new_pool) LOG.error('Failed to update pool %(pool)s with ' 'error %(error)s', {'pool': old_pool.id, 'error': e}) @log_helpers.log_method_call def delete(self, context, pool): lb_id = pool.loadbalancer_id pool_client = self.core_plugin.nsxlib.load_balancer.pool vs_client = self.core_plugin.nsxlib.load_balancer.virtual_server binding = nsx_db.get_nsx_lbaas_pool_binding( context.session, lb_id, pool.id) if binding: vs_id = binding.get('lb_vs_id') lb_pool_id = binding.get('lb_pool_id') if vs_id: try: vs_client.update(vs_id, pool_id='') except nsxlib_exc.ManagerError: self.lbv2_driver.pool.failed_completion(context, pool) msg = _('Failed to remove lb pool %(pool)s from virtual ' 'server %(vs)s') % {'pool': lb_pool_id, 'vs': vs_id} raise n_exc.BadRequest(resource='lbaas-pool', msg=msg) try: pool_client.delete(lb_pool_id) except nsxlib_exc.ManagerError: self.lbv2_driver.pool.failed_completion(context, pool) msg = (_('Failed to delete lb pool from nsx: %(pool)s') % {'pool': lb_pool_id}) raise n_exc.BadRequest(resource='lbaas-pool', msg=msg) nsx_db.delete_nsx_lbaas_pool_binding(context.session, lb_id, pool.id) self.lbv2_driver.pool.successful_completion( context, pool, delete=True)