aa2ccf3991
The patch makes the following changes: * adds new attribute of the pool: provider, which is provider name as it is written in configuration * adds support for multiple plugin drivers for loadbalancer * cleans up healthmonitor-related plugin driver API Drivers should work with healthmonitor associations only * adds ability to update provider attribute for the pool used to reassociate pools with new providers in case their providers were removed from configuration implements blueprint lbaas-integration-with-service-types DocImpact Change-Id: I4295c9bcceb38e60f813d5596af48bd8194c1c9b
129 lines
4.3 KiB
Python
129 lines
4.3 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# Copyright 2013 Radware LTD.
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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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#
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# @author: Avishay Balderman, Radware
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import abc
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class LoadBalancerAbstractDriver(object):
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"""Abstract lbaas driver that expose ~same API as lbaas plugin.
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The configuration elements (Vip,Member,etc) are the dicts that
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are returned to the tenant.
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Get operations are not part of the API - it will be handled
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by the lbaas plugin.
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"""
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__metaclass__ = abc.ABCMeta
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@abc.abstractmethod
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def create_vip(self, context, vip):
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"""A real driver would invoke a call to his backend
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and set the Vip status to ACTIVE/ERROR according
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to the backend call result
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self.plugin.update_status(context, Vip, vip["id"],
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constants.ACTIVE)
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"""
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pass
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@abc.abstractmethod
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def update_vip(self, context, old_vip, vip):
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"""Driver may call the code below in order to update the status.
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self.plugin.update_status(context, Vip, id, constants.ACTIVE)
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"""
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pass
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@abc.abstractmethod
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def delete_vip(self, context, vip):
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"""A real driver would invoke a call to his backend
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and try to delete the Vip.
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if the deletion was successfull, delete the record from the database.
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if the deletion has failed, set the Vip status to ERROR.
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"""
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pass
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@abc.abstractmethod
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def create_pool(self, context, pool):
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"""Driver may call the code below in order to update the status.
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self.plugin.update_status(context, Pool, pool["id"],
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constants.ACTIVE)
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"""
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pass
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@abc.abstractmethod
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def update_pool(self, context, old_pool, pool):
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"""Driver may call the code below in order to update the status.
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self.plugin.update_status(context,
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Pool,
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pool["id"], constants.ACTIVE)
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"""
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pass
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@abc.abstractmethod
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def delete_pool(self, context, pool):
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"""Driver can call the code below in order to delete the pool.
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self.plugin._delete_db_pool(context, pool["id"])
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or set the status to ERROR if deletion failed
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"""
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pass
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@abc.abstractmethod
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def stats(self, context, pool_id):
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pass
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@abc.abstractmethod
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def create_member(self, context, member):
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"""Driver may call the code below in order to update the status.
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self.plugin.update_status(context, Member, member["id"],
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constants.ACTIVE)
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"""
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pass
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@abc.abstractmethod
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def update_member(self, context, old_member, member):
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"""Driver may call the code below in order to update the status.
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self.plugin.update_status(context, Member,
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member["id"], constants.ACTIVE)
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"""
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pass
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@abc.abstractmethod
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def delete_member(self, context, member):
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pass
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@abc.abstractmethod
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def update_health_monitor(self, context,
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old_health_monitor,
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health_monitor,
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pool_id):
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pass
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@abc.abstractmethod
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def create_pool_health_monitor(self, context,
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health_monitor,
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pool_id):
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"""Driver may call the code below in order to update the status.
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self.plugin.update_pool_health_monitor(context,
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health_monitor["id"],
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pool_id,
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constants.ACTIVE)
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"""
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pass
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@abc.abstractmethod
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def delete_pool_health_monitor(self, context, health_monitor, pool_id):
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pass
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