/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/zmq_socket.py is in python-oslo.messaging 5.10.0-2.
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 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 | # 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 import common as rpc_common
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._i18n import _LE, _LI
from oslo_messaging import exceptions
from oslo_serialization.serializer import json_serializer
from oslo_serialization.serializer import msgpack_serializer
LOG = logging.getLogger(__name__)
zmq = zmq_async.import_zmq()
class ZmqSocket(object):
SERIALIZERS = {
'json': json_serializer.JSONSerializer(),
'msgpack': msgpack_serializer.MessagePackSerializer()
}
def __init__(self, conf, context, socket_type, immediate,
high_watermark=0, identity=None):
self.conf = conf
self.context = context
self.socket_type = socket_type
self.handle = context.socket(socket_type)
self.handle.set_hwm(high_watermark)
self.close_linger = -1
if self.conf.oslo_messaging_zmq.rpc_cast_timeout > 0:
self.close_linger = \
self.conf.oslo_messaging_zmq.rpc_cast_timeout * 1000
self.handle.setsockopt(zmq.LINGER, self.close_linger)
# Put messages to only connected queues
self.handle.setsockopt(zmq.IMMEDIATE, 1 if immediate else 0)
self.handle.identity = six.b(str(uuid.uuid4())) if identity is None \
else identity
self.connections = set()
def _get_serializer(self, serialization):
serializer = self.SERIALIZERS.get(serialization, None)
if serializer is None:
raise NotImplementedError(
"Serialization '{}' is not supported".format(serialization)
)
return serializer
def type_name(self):
return zmq_names.socket_type_str(self.socket_type)
def connections_count(self):
return len(self.connections)
def connect(self, address):
if address not in self.connections:
self.handle.connect(address)
self.connections.add(address)
def setsockopt(self, *args, **kwargs):
self.handle.setsockopt(*args, **kwargs)
def setsockopt_string(self, *args, **kwargs):
self.handle.setsockopt_string(*args, **kwargs)
def send(self, *args, **kwargs):
self.handle.send(*args, **kwargs)
def send_string(self, *args, **kwargs):
self.handle.send_string(*args, **kwargs)
def send_json(self, *args, **kwargs):
self.handle.send_json(*args, **kwargs)
def send_pyobj(self, *args, **kwargs):
self.handle.send_pyobj(*args, **kwargs)
def send_multipart(self, *args, **kwargs):
self.handle.send_multipart(*args, **kwargs)
def send_dumped(self, obj, *args, **kwargs):
serialization = kwargs.pop(
'serialization',
self.conf.oslo_messaging_zmq.rpc_zmq_serialization)
serializer = self._get_serializer(serialization)
s = serializer.dump_as_bytes(obj)
self.handle.send(s, *args, **kwargs)
def recv(self, *args, **kwargs):
return self.handle.recv(*args, **kwargs)
def recv_string(self, *args, **kwargs):
return self.handle.recv_string(*args, **kwargs)
def recv_json(self, *args, **kwargs):
return self.handle.recv_json(*args, **kwargs)
def recv_pyobj(self, *args, **kwargs):
return self.handle.recv_pyobj(*args, **kwargs)
def recv_multipart(self, *args, **kwargs):
return self.handle.recv_multipart(*args, **kwargs)
def recv_loaded(self, *args, **kwargs):
serialization = kwargs.pop(
'serialization',
self.conf.oslo_messaging_zmq.rpc_zmq_serialization)
serializer = self._get_serializer(serialization)
s = self.handle.recv(*args, **kwargs)
obj = serializer.load_from_bytes(s)
return obj
def close(self, *args, **kwargs):
self.handle.close(*args, **kwargs)
def connect_to_address(self, address):
if address in self.connections:
return
stype = zmq_names.socket_type_str(self.socket_type)
try:
LOG.info(_LI("Connecting %(stype)s id %(id)s to %(address)s"),
{"stype": stype,
"id": self.handle.identity,
"address": address})
self.connect(address)
except zmq.ZMQError as e:
errmsg = _LE("Failed connecting %(stype)s to %(address)s: %(e)s") \
% {"stype": stype, "address": address, "e": e}
LOG.error(_LE("Failed connecting %(stype)s to %(address)s: %(e)s"),
{"stype": stype, "address": address, "e": e})
raise rpc_common.RPCException(errmsg)
def connect_to_host(self, host):
address = zmq_address.get_tcp_direct_address(
host.decode('utf-8') if six.PY3 and
isinstance(host, six.binary_type) else host
)
self.connect_to_address(address)
class ZmqPortBusy(exceptions.MessagingException):
"""Raised when binding to a port failure"""
def __init__(self, port_number):
super(ZmqPortBusy, self).__init__()
self.port_number = port_number
class ZmqRandomPortSocket(ZmqSocket):
def __init__(self, conf, context, socket_type, host=None,
high_watermark=0):
super(ZmqRandomPortSocket, self).__init__(
conf, context, socket_type, immediate=False,
high_watermark=high_watermark)
self.bind_address = zmq_address.get_tcp_random_address(self.conf)
if host is None:
host = conf.oslo_messaging_zmq.rpc_zmq_host
try:
self.port = self.handle.bind_to_random_port(
self.bind_address,
min_port=conf.oslo_messaging_zmq.rpc_zmq_min_port,
max_port=conf.oslo_messaging_zmq.rpc_zmq_max_port,
max_tries=conf.oslo_messaging_zmq.rpc_zmq_bind_port_retries)
self.connect_address = zmq_address.combine_address(host, self.port)
except zmq.ZMQBindError:
LOG.error(_LE("Random ports range exceeded!"))
raise ZmqPortBusy(port_number=0)
class ZmqFixedPortSocket(ZmqSocket):
def __init__(self, conf, context, socket_type, host, port,
high_watermark=0):
super(ZmqFixedPortSocket, self).__init__(
conf, context, socket_type, immediate=False,
high_watermark=high_watermark)
self.connect_address = zmq_address.combine_address(host, port)
self.bind_address = zmq_address.get_tcp_direct_address(
zmq_address.combine_address(
conf.oslo_messaging_zmq.rpc_zmq_bind_address, port))
self.host = host
self.port = port
try:
self.handle.bind(self.bind_address)
except zmq.ZMQError as e:
LOG.exception(e)
LOG.error(_LE("Chosen port %d is being busy.") % self.port)
raise ZmqPortBusy(port_number=port)
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