/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/client/zmq_publisher_manager.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.
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#
# 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 abc
import contextlib
import logging
import six
import tenacity
from oslo_messaging._drivers.zmq_driver.matchmaker import zmq_matchmaker_base
from oslo_messaging._drivers.zmq_driver import zmq_async
from oslo_messaging._i18n import _LW
LOG = logging.getLogger(__name__)
zmq = zmq_async.import_zmq()
def _drop_message_warn(request):
LOG.warning(_LW("Matchmaker contains no records for specified "
"target %(target)s. Dropping message %(msg_id)s."),
{"target": request.target,
"msg_id": request.message_id})
def target_not_found_warn(func):
def _target_not_found_warn(self, request, *args, **kwargs):
try:
return func(self, request, *args, **kwargs)
except (zmq_matchmaker_base.MatchmakerUnavailable,
tenacity.RetryError):
_drop_message_warn(request)
return _target_not_found_warn
def target_not_found_timeout(func):
def _target_not_found_timeout(self, request, *args, **kwargs):
try:
return func(self, request, *args, **kwargs)
except (zmq_matchmaker_base.MatchmakerUnavailable,
tenacity.RetryError):
_drop_message_warn(request)
self.publisher._raise_timeout(request)
return _target_not_found_timeout
@six.add_metaclass(abc.ABCMeta)
class PublisherManagerBase(object):
"""Abstract publisher manager class
Publisher knows how to establish connection, how to send message,
and how to receive reply. PublisherManager coordinates all these steps
regarding retrying logic in AckManager implementations. May also have an
additional thread pool for scheduling background tasks.
"""
def __init__(self, publisher, with_pool=False):
self.publisher = publisher
self.conf = publisher.conf
self.sender = publisher.sender
self.receiver = publisher.receiver
if with_pool:
self.pool = zmq_async.get_pool(
size=self.conf.oslo_messaging_zmq.rpc_thread_pool_size
)
else:
self.pool = None
@abc.abstractmethod
def send_call(self, request):
"""Send call request
:param request: request object
:type request: zmq_request.CallRequest
"""
@abc.abstractmethod
def send_cast(self, request):
"""Send cast request
:param request: request object
:type request: zmq_request.CastRequest
"""
@abc.abstractmethod
def send_fanout(self, request):
"""Send fanout request
:param request: request object
:type request: zmq_request.FanoutRequest
"""
@abc.abstractmethod
def send_notify(self, request):
"""Send notification request
:param request: request object
:type request: zmq_request.NotificationRequest
"""
def cleanup(self):
if self.pool:
self.pool.shutdown(wait=True)
self.publisher.cleanup()
class PublisherManagerDynamic(PublisherManagerBase):
@target_not_found_timeout
def send_call(self, request):
with contextlib.closing(self.publisher.acquire_connection(request)) \
as socket:
self.publisher.send_request(socket, request)
reply = self.publisher.receive_reply(socket, request)
return reply
@target_not_found_warn
def _send(self, request):
with contextlib.closing(self.publisher.acquire_connection(request)) \
as socket:
self.publisher.send_request(socket, request)
send_cast = _send
send_fanout = _send
send_notify = _send
class PublisherManagerDynamicAsyncMultisend(PublisherManagerDynamic):
def __init__(self, publisher):
super(PublisherManagerDynamicAsyncMultisend, self).__init__(
publisher, with_pool=True
)
def _send_async(self, request):
self.pool.submit(self._send, request)
send_fanout = _send_async
send_notify = _send_async
class PublisherManagerStatic(PublisherManagerBase):
@target_not_found_timeout
def send_call(self, request):
socket = self.publisher.acquire_connection(request)
self.publisher.send_request(socket, request)
reply = self.publisher.receive_reply(socket, request)
return reply
@target_not_found_warn
def _send(self, request):
socket = self.publisher.acquire_connection(request)
self.publisher.send_request(socket, request)
send_cast = _send
send_fanout = _send
send_notify = _send
class PublisherManagerStaticAsyncMultisend(PublisherManagerStatic):
def __init__(self, publisher):
super(PublisherManagerStaticAsyncMultisend, self).__init__(
publisher, with_pool=True
)
def _send_async(self, request):
self.pool.submit(self._send, request)
send_fanout = _send_async
send_notify = _send_async
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