79 lines
2.6 KiB
Python
79 lines
2.6 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 logging
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import six
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import zmq
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from oslo_messaging._drivers.zmq_driver.broker import zmq_base_proxy
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from oslo_messaging._drivers.zmq_driver.client.publishers\
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import zmq_dealer_publisher
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from oslo_messaging._drivers.zmq_driver import zmq_address
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from oslo_messaging._drivers.zmq_driver import zmq_async
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from oslo_messaging._i18n import _LI
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LOG = logging.getLogger(__name__)
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class OutgoingQueueProxy(zmq_base_proxy.BaseProxy):
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def __init__(self, conf, context, queue, matchmaker):
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super(OutgoingQueueProxy, self).__init__(conf, context)
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self.queue = queue
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self.matchmaker = matchmaker
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self.publisher = zmq_dealer_publisher.DealerPublisher(
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conf, matchmaker)
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LOG.info(_LI("Polling at outgoing proxy ..."))
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def run(self):
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try:
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request = self.queue.get(timeout=self.conf.rpc_poll_timeout)
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LOG.info(_LI("Redirecting request %s to TCP publisher ...")
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% request)
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self.publisher.send_request(request)
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except six.moves.queue.Empty:
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return
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class IncomingQueueProxy(zmq_base_proxy.BaseProxy):
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def __init__(self, conf, context, queue):
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super(IncomingQueueProxy, self).__init__(conf, context)
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self.poller = zmq_async.get_poller(
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zmq_concurrency='native')
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self.queue = queue
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self.socket = context.socket(zmq.ROUTER)
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self.socket.bind(zmq_address.get_broker_address(conf))
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self.poller.register(self.socket, self.receive_request)
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LOG.info(_LI("Polling at incoming proxy ..."))
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def run(self):
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request, socket = self.poller.poll(self.conf.rpc_poll_timeout)
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if request is None:
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return
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LOG.info(_LI("Received request and queue it: %s") % str(request))
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self.queue.put(request)
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def receive_request(self, socket):
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reply_id = socket.recv()
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assert reply_id is not None, "Valid id expected"
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empty = socket.recv()
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assert empty == b'', "Empty delimiter expected"
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return socket.recv_pyobj()
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