1a03d7b447
In this change PUB-SUB pipeline was added and used for CAST-Fanout pattern. Added 2 new options: * use_pub_sub - configures the driver to use PUB/SUB if True, fallbacks to DEALER/ROUTER implementation otherwise. PUB/SUB implementation is assumed to be always used with proxy. * direct_over_proxy - specifies to use proxy with direct patterns (CALL,CAST). This option is in replace of zmq_use_broker. Latter is meaningless in context of PUB/SUB architecture, so renamed. Change-Id: I7c02d4d62632293941bc0d9d947e5362a5317db6 Closes-Bug: #1515185
81 lines
2.7 KiB
Python
81 lines
2.7 KiB
Python
# Copyright 2015 Mirantis, Inc.
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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 copy
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import logging
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from oslo_messaging._drivers import base
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from oslo_messaging._drivers.zmq_driver.server.consumers\
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import zmq_router_consumer
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from oslo_messaging._drivers.zmq_driver.server.consumers\
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import zmq_sub_consumer
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from oslo_messaging._drivers.zmq_driver import zmq_async
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LOG = logging.getLogger(__name__)
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zmq = zmq_async.import_zmq()
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class ZmqServer(base.Listener):
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def __init__(self, driver, conf, matchmaker=None):
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super(ZmqServer, self).__init__(driver)
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self.matchmaker = matchmaker
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self.poller = zmq_async.get_poller()
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self.rpc_consumer = zmq_router_consumer.RouterConsumerBroker(
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conf, self.poller, self) if conf.direct_over_proxy else \
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zmq_router_consumer.RouterConsumer(
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conf, self.poller, self)
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self.notify_consumer = self.rpc_consumer
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self.sub_consumer = zmq_sub_consumer.SubConsumer(
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conf, self.poller, self) if conf.use_pub_sub else None
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self.consumers = [self.rpc_consumer]
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if self.sub_consumer:
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self.consumers.append(self.sub_consumer)
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@base.batch_poll_helper
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def poll(self, timeout=None):
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message, socket = self.poller.poll(
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timeout or self.conf.rpc_poll_timeout)
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return message
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def stop(self):
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consumer = self.rpc_consumer
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LOG.info("Stop server %s:%d" % (consumer.address, consumer.port))
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def cleanup(self):
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self.poller.close()
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for consumer in self.consumers:
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consumer.cleanup()
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def listen(self, target):
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consumer = self.rpc_consumer
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consumer.listen(target)
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if self.sub_consumer:
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self.sub_consumer.listen(target)
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def listen_notification(self, targets_and_priorities):
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consumer = self.notify_consumer
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LOG.info("Listen for notifications on %s:%d"
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% (consumer.address, consumer.port))
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for target, priority in targets_and_priorities:
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t = copy.deepcopy(target)
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t.topic = target.topic + '.' + priority
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consumer.listen(t)
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