/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/zmq_driver/poller/threading_poller.py is in python-oslo.messaging 4.6.1-2ubuntu1.
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 logging
import threading
from oslo_utils import eventletutils
from oslo_messaging._drivers.zmq_driver import zmq_async
from oslo_messaging._drivers.zmq_driver import zmq_poller
zmq = zmq_async.import_zmq(zmq_concurrency='native')
LOG = logging.getLogger(__name__)
_threading = threading
if eventletutils.EVENTLET_AVAILABLE:
import eventlet
_threading = eventlet.patcher.original('threading')
class ThreadingPoller(zmq_poller.ZmqPoller):
def __init__(self):
self.poller = zmq.Poller()
self.recv_methods = {}
def register(self, socket, recv_method=None):
LOG.debug("Registering socket")
if socket in self.recv_methods:
return
if recv_method is not None:
self.recv_methods[socket] = recv_method
self.poller.register(socket, zmq.POLLIN)
def poll(self, timeout=None):
if timeout:
timeout *= 1000 # zmq poller waits milliseconds
sockets = None
try:
sockets = dict(self.poller.poll(timeout=timeout))
except zmq.ZMQError as e:
LOG.debug("Polling terminated with error: %s", e)
if not sockets:
return None, None
for socket in sockets:
if socket in self.recv_methods:
return self.recv_methods[socket](socket), socket
else:
return socket.recv_multipart(), socket
def resume_polling(self, socket):
pass # Nothing to do for threading poller
def close(self):
pass # Nothing to do for threading poller
class ThreadingExecutor(zmq_poller.Executor):
def __init__(self, method):
self._method = method
super(ThreadingExecutor, self).__init__(
_threading.Thread(target=self._loop))
self._stop = _threading.Event()
def _loop(self):
while not self._stop.is_set():
self._method()
def execute(self):
self.thread.daemon = True
self.thread.start()
def stop(self):
self._stop.set()
def wait(self):
pass
def done(self):
self._stop.set()
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