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OpenStack Study: agent_api.py

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# vim: tabstop=4 shiftwidth=4 softtabstop=4

#

# Copyright 2013 New Dream Network, LLC (DreamHost)

#

# 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.

#

# @author: Mark McClain, DreamHost

from neutron.openstack.common.rpc import proxy

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class LbaasAgentApi(proxy.RpcProxy):

"""Agent side of the Agent to Plugin RPC API."""

API_VERSION = '2.0'

# history

# 1.0 Initial version

# 2.0 Generic API for agent based drivers

# - get_logical_device() handling changed on plugin side;

# - pool_deployed() and update_status() methods added;

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    def __init__(self, topic, context, host):

        super(LbaasAgentApi, self).__init__(topic, self.API_VERSION)

        self.context = context

        self.host = host

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    def get_ready_devices(self):

        return self.call(

            self.context,

            self.make_msg('get_ready_devices', host=self.host),

            topic=self.topic

        )

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    def pool_destroyed(self, pool_id):

        return self.call(

            self.context,

            self.make_msg('pool_destroyed', pool_id=pool_id),

            topic=self.topic

        )

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    def pool_deployed(self, pool_id):

        return self.call(

            self.context,

            self.make_msg('pool_deployed', pool_id=pool_id),

            topic=self.topic

        )

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    def get_logical_device(self, pool_id):

        return self.call(

            self.context,

            self.make_msg(

                'get_logical_device',

                pool_id=pool_id

            ),

            topic=self.topic

        )

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    def update_status(self, obj_type, obj_id, status):

        return self.call(

            self.context,

            self.make_msg('update_status', obj_type=obj_type, obj_id=obj_id,

                          status=status),

            topic=self.topic

        )

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    def plug_vip_port(self, port_id):

        return self.call(

            self.context,

            self.make_msg('plug_vip_port', port_id=port_id, host=self.host),

            topic=self.topic

        )

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    def unplug_vip_port(self, port_id):

        return self.call(

            self.context,

            self.make_msg('unplug_vip_port', port_id=port_id, host=self.host),

            topic=self.topic

        )

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    def update_pool_stats(self, pool_id, stats):

        return self.call(

            self.context,

            self.make_msg(

                'update_pool_stats',

                pool_id=pool_id,

                stats=stats,

                host=self.host

            ),

            topic=self.topic

        )