bb0ea37a57
The LBaaS V2 plugin expects the driver to update the LB objects operating status from a separate process/thread. When the user requests the LB status (or just the LB object itself with GET), the operating status is retrived from the LBaaS DB, without calling the driver. To avoid adding a process to actively query and update all objects statuses, this patch creates a new LBaaSV2 plugin, to be used instead of the default one. This plugin (vmware_nsx_lbaasv2) will issue a get-statuses call to the driver, update the current statuses in the DB, and call the original plugin. Depends-on: I71a56b87144aad743795ad1295ec636b17429035 Change-Id: I3c4e75d92a1bacdb14292a8db727deb4923a85d9
262 lines
12 KiB
Python
262 lines
12 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 import exceptions as n_exc
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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 neutron_lbaas.services.loadbalancer import constants
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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.implementation 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 EdgeLoadBalancerManagerFromDict(base_mgr.Nsxv3LoadbalancerBaseManager):
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def create(self, context, lb, completor):
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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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completor(success=True)
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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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def update(self, context, old_lb, new_lb, completor):
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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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completor(success=False)
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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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completor(success=True)
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def delete(self, context, lb, completor):
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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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completor(success=False)
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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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completor(success=True)
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def refresh(self, context, lb):
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# TODO(tongl): implement
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pass
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def _nsx_status_to_lb_status(self, nsx_status):
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if not nsx_status:
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# default fallback
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return constants.ONLINE
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# Statuses that are considered ONLINE:
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if nsx_status.upper() in ['UP', 'UNKNOWN', 'PARTIALLY_UP',
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'NO_STANDBY']:
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return constants.ONLINE
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# Statuses that are considered OFFLINE:
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if nsx_status.upper() in ['PRIMARY_DOWN', 'DETACHED', 'DOWN', 'ERROR']:
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return constants.OFFLINE
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if nsx_status.upper() == 'DISABLED':
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return constants.DISABLED
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# default fallback
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LOG.debug("NSX LB status %s - interpreted as ONLINE", nsx_status)
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return constants.ONLINE
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def get_lb_pool_members_statuses(self, nsx_pool_id, members_statuses):
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# Combine the NSX pool members data and the NSX statuses to provide
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# member statuses list
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# Get the member id from the suffix of the member in the NSX pool list
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# and find the matching ip+port member in the statuses list
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# get the members list from the NSX
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nsx_pool = self.core_plugin.nsxlib.load_balancer.pool.get(nsx_pool_id)
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if not nsx_pool or not nsx_pool.get('members'):
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return []
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# create a map of existing members: ip+port -> lbaas ID (which is the
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# suffix of the member name)
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members_map = {}
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for member in nsx_pool['members']:
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ip = member['ip_address']
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port = member['port']
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if ip not in members_map:
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members_map[ip] = {}
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members_map[ip][port] = member['display_name'][-36:]
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# go over the statuses map, and match the member ip_port, to the ID
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# in the map
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statuses = []
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for member in members_statuses:
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ip = member['ip_address']
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port = member['port']
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if ip in members_map and port in members_map[ip]:
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member_id = members_map[ip][port]
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member_status = self._nsx_status_to_lb_status(member['status'])
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statuses.append({'id': member_id, 'status': member_status})
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return statuses
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def get_operating_status(self, context, id, with_members=False):
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"""Return a map of the operating status of all connected LB objects """
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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, id)
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if not lb_binding:
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# No service yet
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return {}
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lb_service_id = lb_binding['lb_service_id']
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try:
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service_status = service_client.get_status(lb_service_id)
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vs_statuses = service_client.get_virtual_servers_status(
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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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return {}
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# get the loadbalancer status from the LB service
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lb_status = self._nsx_status_to_lb_status(
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service_status.get('service_status'))
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statuses = {lb_const.LOADBALANCERS: [{'id': id, 'status': lb_status}],
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lb_const.LISTENERS: [],
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lb_const.POOLS: [],
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lb_const.MEMBERS: []}
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# Add the listeners statuses from the virtual servers statuses
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for vs in vs_statuses.get('results', []):
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vs_status = self._nsx_status_to_lb_status(vs.get('status'))
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vs_id = vs.get('virtual_server_id')
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listener_binding = nsx_db.get_nsx_lbaas_listener_binding_by_vs(
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context.session, id, vs_id)
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if listener_binding:
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listener_id = listener_binding['listener_id']
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statuses[lb_const.LISTENERS].append(
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{'id': listener_id, 'status': vs_status})
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# Add the pools statuses from the LB service status
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for pool in service_status.get('pools', []):
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nsx_pool_id = pool.get('pool_id')
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pool_status = self._nsx_status_to_lb_status(pool.get('status'))
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pool_binding = nsx_db.get_nsx_lbaas_pool_binding_by_lb_pool(
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context.session, id, nsx_pool_id)
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if pool_binding:
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pool_id = pool_binding['pool_id']
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statuses[lb_const.POOLS].append(
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{'id': pool_id, 'status': pool_status})
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# Add the pools members
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if with_members and pool.get('members'):
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statuses[lb_const.MEMBERS].extend(
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self.get_lb_pool_members_statuses(
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nsx_pool_id, pool['members']))
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return statuses
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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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