76 lines
3.1 KiB
Python
76 lines
3.1 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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from oslo_messaging._drivers.zmq_driver.client import zmq_senders
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from oslo_messaging._drivers.zmq_driver.server.consumers \
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import zmq_consumer_base
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from oslo_messaging._drivers.zmq_driver.server import zmq_incoming_message
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from oslo_messaging._drivers.zmq_driver import zmq_async
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from oslo_messaging._drivers.zmq_driver import zmq_names
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from oslo_messaging._i18n import _LE, _LI
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LOG = logging.getLogger(__name__)
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zmq = zmq_async.import_zmq()
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class RouterConsumer(zmq_consumer_base.SingleSocketConsumer):
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def __init__(self, conf, poller, server):
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self.ack_sender = zmq_senders.AckSenderDirect(conf)
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self.reply_sender = zmq_senders.ReplySenderDirect(conf)
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super(RouterConsumer, self).__init__(conf, poller, server, zmq.ROUTER)
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LOG.info(_LI("[%s] Run ROUTER consumer"), self.host)
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def _receive_request(self, socket):
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reply_id = socket.recv()
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empty = socket.recv()
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assert empty == b'', 'Bad format: empty delimiter expected'
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msg_type = int(socket.recv())
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message_id = socket.recv_string()
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context, message = socket.recv_loaded()
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return reply_id, msg_type, message_id, context, message
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def receive_message(self, socket):
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try:
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reply_id, msg_type, message_id, context, message = \
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self._receive_request(socket)
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LOG.debug("[%(host)s] Received %(msg_type)s message %(msg_id)s",
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{"host": self.host,
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"msg_type": zmq_names.message_type_str(msg_type),
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"msg_id": message_id})
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if msg_type == zmq_names.CALL_TYPE or \
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msg_type in zmq_names.NON_BLOCKING_TYPES:
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ack_sender = self.ack_sender \
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if self.conf.oslo_messaging_zmq.rpc_use_acks else None
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reply_sender = self.reply_sender \
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if msg_type == zmq_names.CALL_TYPE else None
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return zmq_incoming_message.ZmqIncomingMessage(
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context, message, reply_id, message_id, socket,
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ack_sender, reply_sender
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)
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else:
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LOG.error(_LE("Unknown message type: %s"),
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zmq_names.message_type_str(msg_type))
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except (zmq.ZMQError, AssertionError, ValueError) as e:
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LOG.error(_LE("Receiving message failed: %s"), str(e))
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def cleanup(self):
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LOG.info(_LI("[%s] Destroy ROUTER consumer"), self.host)
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super(RouterConsumer, self).cleanup()
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