d7493a223f
Most of this code will probably stay with us for quite some time, so let's make things easier and consider them as our way of doing RPC. blueprint oslo-messaging Change-Id: Iaf353b23f9c54b82d1e02a6bd5a5960cec827c88
111 lines
4.0 KiB
Python
111 lines
4.0 KiB
Python
# Copyright (c) 2012 OpenStack Foundation.
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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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import itertools
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from neutron.common import rpc as n_rpc
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from neutron.common import topics
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from neutron.openstack.common import log as logging
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from neutron.openstack.common import timeutils
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LOG = logging.getLogger(__name__)
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def create_consumers(endpoints, prefix, topic_details):
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"""Create agent RPC consumers.
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:param endpoints: The list of endpoints to process the incoming messages.
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:param prefix: Common prefix for the plugin/agent message queues.
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:param topic_details: A list of topics. Each topic has a name, an
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operation, and an optional host param keying the
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subscription to topic.host for plugin calls.
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:returns: A common Connection.
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"""
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connection = n_rpc.create_connection(new=True)
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for details in topic_details:
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topic, operation, node_name = itertools.islice(
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itertools.chain(details, [None]), 3)
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topic_name = topics.get_topic_name(prefix, topic, operation)
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connection.create_consumer(topic_name, endpoints, fanout=True)
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if node_name:
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node_topic_name = '%s.%s' % (topic_name, node_name)
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connection.create_consumer(node_topic_name,
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endpoints,
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fanout=False)
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connection.consume_in_threads()
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return connection
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class PluginReportStateAPI(n_rpc.RpcProxy):
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BASE_RPC_API_VERSION = '1.0'
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def __init__(self, topic):
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super(PluginReportStateAPI, self).__init__(
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topic=topic, default_version=self.BASE_RPC_API_VERSION)
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def report_state(self, context, agent_state, use_call=False):
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msg = self.make_msg('report_state',
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agent_state={'agent_state':
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agent_state},
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time=timeutils.strtime())
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if use_call:
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return self.call(context, msg, topic=self.topic)
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else:
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return self.cast(context, msg, topic=self.topic)
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class PluginApi(n_rpc.RpcProxy):
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'''Agent side of the rpc API.
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API version history:
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1.0 - Initial version.
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'''
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BASE_RPC_API_VERSION = '1.1'
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def __init__(self, topic):
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super(PluginApi, self).__init__(
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topic=topic, default_version=self.BASE_RPC_API_VERSION)
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def get_device_details(self, context, device, agent_id):
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return self.call(context,
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self.make_msg('get_device_details', device=device,
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agent_id=agent_id),
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topic=self.topic)
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def update_device_down(self, context, device, agent_id, host=None):
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return self.call(context,
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self.make_msg('update_device_down', device=device,
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agent_id=agent_id, host=host),
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topic=self.topic)
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def update_device_up(self, context, device, agent_id, host=None):
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return self.call(context,
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self.make_msg('update_device_up', device=device,
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agent_id=agent_id, host=host),
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topic=self.topic)
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def tunnel_sync(self, context, tunnel_ip, tunnel_type=None):
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return self.call(context,
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self.make_msg('tunnel_sync', tunnel_ip=tunnel_ip,
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tunnel_type=tunnel_type),
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topic=self.topic)
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