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
86 lines
3.6 KiB
Python
86 lines
3.6 KiB
Python
# Copyright 2018 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 oslo_log import log as logging
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from neutron_lbaas.db.loadbalancer import models
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from neutron_lbaas.services.loadbalancer import plugin
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from vmware_nsx.services.lbaas import lb_const
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LOG = logging.getLogger(__name__)
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class LoadBalancerNSXPluginV2(plugin.LoadBalancerPluginv2):
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"""NSX Plugin for LBaaS V2.
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This plugin overrides the statuses call to issue the DB update before
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displaying the results.
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"""
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def nsx_update_operational_statuses(self, context, loadbalancer_id,
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with_members=False):
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"""Update LB objects operating status
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Call the driver to get the current statuses, and update those in the DB
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"""
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# get the driver
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driver = self._get_driver_for_loadbalancer(
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context, loadbalancer_id)
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driver_obj = driver.load_balancer.lbv2_driver
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# Get the current statuses from the driver
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lb_statuses = driver_obj.loadbalancer.implementor.get_operating_status(
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context, loadbalancer_id, with_members=with_members)
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if not lb_statuses:
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return
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# update the new statuses in the LBaaS DB
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if lb_const.LOADBALANCERS in lb_statuses:
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for lb in lb_statuses[lb_const.LOADBALANCERS]:
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self.db.update_status(context, models.LoadBalancer, lb['id'],
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operating_status=lb['status'])
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if lb_const.LISTENERS in lb_statuses:
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for listener in lb_statuses[lb_const.LISTENERS]:
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self.db.update_status(context, models.Listener, listener['id'],
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operating_status=listener['status'])
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if lb_const.POOLS in lb_statuses:
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for pool in lb_statuses[lb_const.POOLS]:
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self.db.update_status(context, models.PoolV2, pool['id'],
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operating_status=pool['status'])
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if lb_const.MEMBERS in lb_statuses:
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for member in lb_statuses[lb_const.MEMBERS]:
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self.db.update_status(context, models.MemberV2, member['id'],
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operating_status=member['status'])
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def statuses(self, context, loadbalancer_id):
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# Update the LB statuses before letting the plugin display them
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self.nsx_update_operational_statuses(context, loadbalancer_id,
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with_members=True)
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# use super code to get the updated statuses
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return super(LoadBalancerNSXPluginV2, self).statuses(
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context, loadbalancer_id)
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def get_loadbalancer(self, context, loadbalancer_id, fields=None):
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# Update the LB status before letting the plugin display it in the
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# loadbalancer display
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self.nsx_update_operational_statuses(context, loadbalancer_id)
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return super(LoadBalancerNSXPluginV2, self).get_loadbalancer(
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context, loadbalancer_id, fields=fields)
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# TODO(asarfaty) : do the implementation for V objects as well
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