/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/proxy/zmq_base_proxy.py is in python-oslo.messaging 5.35.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
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 | # Copyright 2016 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 import zmq_async
from oslo_messaging._drivers.zmq_driver import zmq_names
from oslo_messaging._drivers.zmq_driver import zmq_socket
from oslo_messaging._i18n import _LI, _LE
LOG = logging.getLogger(__name__)
zmq = zmq_async.import_zmq()
def check_message_format(func):
def _check_message_format(socket):
try:
return func(socket)
except Exception as e:
LOG.error(_LE("Received message with wrong format: %r. "
"Dropping invalid message"), e)
# NOTE(gdavoian): drop the left parts of a broken message, since
# they most likely will break the order of next messages' parts
if socket.getsockopt(zmq.RCVMORE):
socket.recv_multipart()
return _check_message_format
def create_socket(conf, context, port, socket_type):
host = conf.zmq_proxy_opts.host
identity = six.b(host) + b"/zmq-proxy/" + six.b(str(uuid.uuid4()))
if port != 0:
return zmq_socket.ZmqFixedPortSocket(conf, context, socket_type,
host, port, identity=identity)
else:
return zmq_socket.ZmqRandomPortSocket(conf, context, socket_type,
host, identity=identity)
class ProxyBase(object):
PROXY_TYPE = "UNDEFINED"
def __init__(self, conf, context, matchmaker):
self.conf = conf
self.context = context
self.matchmaker = matchmaker
LOG.info(_LI("Running %s proxy") % self.PROXY_TYPE)
self.poller = zmq_async.get_poller()
@staticmethod
@check_message_format
def _receive_message(socket):
message = socket.recv_multipart()
assert message[zmq_names.EMPTY_IDX] == b'', "Empty delimiter expected!"
message_type = int(message[zmq_names.MESSAGE_TYPE_IDX])
assert message_type in zmq_names.MESSAGE_TYPES, \
"Known message type expected!"
assert len(message) > zmq_names.MESSAGE_ID_IDX, \
"At least %d parts expected!" % (zmq_names.MESSAGE_ID_IDX + 1)
return message
def cleanup(self):
self.poller.close()
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