/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/client/publishers/dealer/zmq_dealer_publisher_proxy.py is in python-oslo.messaging 5.10.0-2.
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The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | # Copyright 2015 Mirantis, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import logging
import uuid
import six
from oslo_messaging._drivers.zmq_driver.client.publishers.dealer \
import zmq_dealer_publisher_base
from oslo_messaging._drivers.zmq_driver.client import zmq_receivers
from oslo_messaging._drivers.zmq_driver.client import zmq_routing_table
from oslo_messaging._drivers.zmq_driver.client import zmq_senders
from oslo_messaging._drivers.zmq_driver import zmq_address
from oslo_messaging._drivers.zmq_driver import zmq_async
from oslo_messaging._drivers.zmq_driver import zmq_names
from oslo_messaging._drivers.zmq_driver import zmq_updater
from oslo_messaging._i18n import _LW
LOG = logging.getLogger(__name__)
zmq = zmq_async.import_zmq()
class DealerPublisherProxy(zmq_dealer_publisher_base.DealerPublisherBase):
"""DEALER-publisher via proxy."""
def __init__(self, conf, matchmaker):
sender = zmq_senders.RequestSenderProxy(conf)
if conf.oslo_messaging_zmq.rpc_use_acks:
receiver = zmq_receivers.AckAndReplyReceiverProxy(conf)
else:
receiver = zmq_receivers.ReplyReceiverProxy(conf)
super(DealerPublisherProxy, self).__init__(conf, matchmaker, sender,
receiver)
self.socket = self.sockets_manager.get_socket_to_publishers(
self._generate_identity())
self.routing_table = zmq_routing_table.RoutingTable(self.conf,
self.matchmaker)
self.connection_updater = \
PublisherConnectionUpdater(self.conf, self.matchmaker, self.socket)
def _generate_identity(self):
return six.b(self.conf.oslo_messaging_zmq.rpc_zmq_host + "/" +
str(uuid.uuid4()))
def connect_socket(self, request):
return self.socket
def send_call(self, request):
request.routing_key = \
self.routing_table.get_routable_host(request.target)
if request.routing_key is None:
self._raise_timeout(request)
return super(DealerPublisherProxy, self).send_call(request)
def _get_routing_keys(self, request):
if request.msg_type in zmq_names.DIRECT_TYPES:
return [self.routing_table.get_routable_host(request.target)]
else:
return \
[zmq_address.target_to_subscribe_filter(request.target)] \
if self.conf.oslo_messaging_zmq.use_pub_sub else \
self.routing_table.get_all_hosts(request.target)
def _send_non_blocking(self, request):
for routing_key in self._get_routing_keys(request):
if routing_key is None:
LOG.warning(_LW("Matchmaker contains no record for specified "
"target %(target)s. Dropping message %(id)s.")
% {"target": request.target,
"id": request.message_id})
continue
request.routing_key = routing_key
self.sender.send(self.socket, request)
def cleanup(self):
super(DealerPublisherProxy, self).cleanup()
self.connection_updater.stop()
self.socket.close()
class PublisherConnectionUpdater(zmq_updater.ConnectionUpdater):
def _update_connection(self):
publishers = self.matchmaker.get_publishers()
for pub_address, router_address in publishers:
self.socket.connect_to_host(router_address)
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