317153a464
Several commands take much longer to complete after that commit.
Therefore, we should revert that specific commit first, and
investigate root cause before merging it back.
This reverts commit 873214b6e2.
Closes-Bug: #1540646
Change-Id: I0eb12f76e93fb1675c78bf60367db534061aceb1
117 lines
4.1 KiB
Python
117 lines
4.1 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 eventlet
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from oslo_config import cfg
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import oslo_messaging as messaging
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from oslo_service import service
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from magnum.common import rpc
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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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# NOTE(paulczar):
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# Ubuntu 14.04 forces librabbitmq when kombu is used
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# Unfortunately it forces a version that has a crash
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# bug. Calling eventlet.monkey_patch() tells kombu
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# to use libamqp instead.
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eventlet.monkey_patch()
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# NOTE(asalkeld):
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# The magnum.openstack.common.rpc entries are for compatibility
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# with devstack rpc_backend configuration values.
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TRANSPORT_ALIASES = {
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'magnum.openstack.common.rpc.impl_kombu': 'rabbit',
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'magnum.openstack.common.rpc.impl_qpid': 'qpid',
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'magnum.openstack.common.rpc.impl_zmq': 'zmq',
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}
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periodic_opts = [
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cfg.BoolOpt('periodic_enable',
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default=True,
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help='Enable periodic tasks.'),
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cfg.IntOpt('periodic_interval_max',
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default=60,
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help='Max interval size between periodic tasks execution in '
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'seconds.'),
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]
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CONF = cfg.CONF
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CONF.register_opts(periodic_opts)
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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 = rpc.RequestContextSerializer(
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objects_base.MagnumObjectSerializer())
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transport = messaging.get_transport(cfg.CONF,
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aliases=TRANSPORT_ALIASES)
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# TODO(asalkeld) add support for version='x.y'
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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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serializer=serializer)
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self.binary = binary
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def start(self):
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# NOTE(suro-patz): The parent class has created a threadgroup, already
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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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self._server.start()
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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 = rpc.RequestContextSerializer(
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objects_base.MagnumObjectSerializer())
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if transport is None:
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exmods = rpc.get_allowed_exmods()
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transport = messaging.get_transport(cfg.CONF,
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allowed_remote_exmods=exmods,
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aliases=TRANSPORT_ALIASES)
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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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