8ce15c4510
The periodic jobs are currently getting registered per each worker which means that in cases with large number of workers, the APIs for services such as Heat and Keystone will be hit very hard. This patch resolves this issue by registering the jobs only to the main process, ensuring that they run once per instance (or group of workers). Closes-Bug: #1702349 Change-Id: If9e13effc14fd35e646d02bb4f568e79786aa958
105 lines
3.6 KiB
Python
105 lines
3.6 KiB
Python
# Copyright 2014 - Rackspace Hosting
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Common RPC service and API tools for Magnum."""
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import oslo_messaging as messaging
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from oslo_messaging.rpc import dispatcher
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from oslo_service import service
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from oslo_utils import importutils
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from magnum.common import profiler
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from magnum.common import rpc
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import magnum.conf
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from magnum.objects import base as objects_base
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from magnum.service import periodic
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from magnum.servicegroup import magnum_service_periodic as servicegroup
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osprofiler = importutils.try_import("osprofiler.profiler")
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CONF = magnum.conf.CONF
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def _init_serializer():
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serializer = rpc.RequestContextSerializer(
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objects_base.MagnumObjectSerializer())
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if osprofiler:
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serializer = rpc.ProfilerRequestContextSerializer(serializer)
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else:
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serializer = rpc.RequestContextSerializer(serializer)
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return serializer
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class Service(service.Service):
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def __init__(self, topic, server, handlers, binary):
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super(Service, self).__init__()
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serializer = _init_serializer()
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transport = messaging.get_rpc_transport(CONF)
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# TODO(asalkeld) add support for version='x.y'
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access_policy = dispatcher.DefaultRPCAccessPolicy
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target = messaging.Target(topic=topic, server=server)
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self._server = messaging.get_rpc_server(transport, target, handlers,
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executor='eventlet',
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serializer=serializer,
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access_policy=access_policy)
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self.binary = binary
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profiler.setup(binary, CONF.host)
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def start(self):
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self._server.start()
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def create_periodic_tasks(self):
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if CONF.periodic_enable:
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periodic.setup(CONF, self.tg)
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servicegroup.setup(CONF, self.binary, self.tg)
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def stop(self):
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if self._server:
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self._server.stop()
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self._server.wait()
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super(Service, self).stop()
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@classmethod
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def create(cls, topic, server, handlers, binary):
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service_obj = cls(topic, server, handlers, binary)
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return service_obj
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class API(object):
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def __init__(self, transport=None, context=None, topic=None, server=None,
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timeout=None):
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serializer = _init_serializer()
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if transport is None:
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exmods = rpc.get_allowed_exmods()
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transport = messaging.get_rpc_transport(
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CONF, allowed_remote_exmods=exmods)
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self._context = context
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if topic is None:
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topic = ''
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target = messaging.Target(topic=topic, server=server)
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self._client = messaging.RPCClient(transport, target,
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serializer=serializer,
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timeout=timeout)
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def _call(self, method, *args, **kwargs):
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return self._client.call(self._context, method, *args, **kwargs)
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def _cast(self, method, *args, **kwargs):
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self._client.cast(self._context, method, *args, **kwargs)
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def echo(self, message):
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self._cast('echo', message=message)
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