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#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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
#
"""
PROTON-2121 python-qpid-proton 0.28 BlockingConnection leaks connections (does not close file descriptors)
"""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import contextlib
import gc
import os
import socket
import subprocess
import threading
import unittest
import warnings
import cproton
import proton.handlers
import proton.utils
import proton.reactor
def get_fd_set():
# type: () -> set[str]
return set(os.listdir('/proc/self/fd/'))
@contextlib.contextmanager
def no_fd_leaks(test):
# type: (unittest.TestCase) -> None
with warnings.catch_warnings(record=True) as ws:
before = get_fd_set()
yield
delta = get_fd_set().difference(before)
if len(delta) != 0:
subprocess.check_call("ls -lF /proc/{0}/fd/".format(os.getpid()), shell=True)
test.fail("Found {0} new fd(s) after the test".format(delta))
if len(ws) > 0:
test.fail([w.message for w in ws])
class Broker(proton.handlers.MessagingHandler):
def __init__(self, acceptor_url):
# type: (str) -> None
super(Broker, self).__init__()
self.acceptor_url = acceptor_url
self.acceptor = None
self._acceptor_opened_event = threading.Event()
def get_acceptor_sockname(self):
# type: () -> (str, int)
self._acceptor_opened_event.wait()
if hasattr(self.acceptor, '_selectable'): # proton 0.30.0+
sockname = self.acceptor._selectable._delegate.getsockname()
else: # works in proton 0.27.0
selectable = cproton.pn_cast_pn_selectable(self.acceptor._impl)
fd = cproton.pn_selectable_get_fd(selectable)
s = socket.fromfd(fd, socket.AF_INET, socket.SOCK_STREAM)
sockname = s.getsockname()
return sockname[:2]
def on_start(self, event):
self.acceptor = event.container.listen(self.acceptor_url)
self._acceptor_opened_event.set()
def on_link_opening(self, event):
if event.link.is_sender:
assert not event.link.remote_source.dynamic, "This cannot happen"
event.link.source.address = event.link.remote_source.address
elif event.link.remote_target.address:
event.link.target.address = event.link.remote_target.address
@contextlib.contextmanager
def test_broker():
broker = Broker('localhost:0')
container = proton.reactor.Container(broker)
threading.Thread(target=container.run).start()
try:
yield broker
finally:
container.stop()
PROC_SELF_FD_EXISTS = os.path.exists("/proc/self/fd"), "Skipped: Directory /proc/self/fd does not exist"
class BlockingConnectionFDLeakTests(unittest.TestCase):
@unittest.skipUnless(*PROC_SELF_FD_EXISTS)
@unittest.expectedFailure
def test_just_start_stop_test_broker(self):
with no_fd_leaks(self):
with test_broker() as broker:
broker.get_acceptor_sockname() # wait for acceptor to open
gc.collect()
@unittest.skipUnless(*PROC_SELF_FD_EXISTS)
@unittest.expectedFailure
def test_connection_close_all(self):
with no_fd_leaks(self):
with test_broker() as broker:
c = proton.utils.BlockingConnection("{0}:{1}".format(*broker.get_acceptor_sockname()))
c.close()
gc.collect()
@unittest.skipUnless(*PROC_SELF_FD_EXISTS)
def test_connection_close_all__do_not_check_test_broker(self):
with test_broker() as broker:
acceptor_sockname = broker.get_acceptor_sockname()
with no_fd_leaks(self):
c = proton.utils.BlockingConnection("{0}:{1}".format(*acceptor_sockname))
c.close()
gc.collect()
@unittest.skipUnless(*PROC_SELF_FD_EXISTS)
@unittest.expectedFailure
def test_connection_sender_close_all(self):
with no_fd_leaks(self):
with test_broker() as broker:
c = proton.utils.BlockingConnection("{0}:{1}".format(*broker.get_acceptor_sockname()))
s = c.create_sender("anAddress")
s.close()
c.close()
gc.collect()
@unittest.skipUnless(*PROC_SELF_FD_EXISTS)
@unittest.expectedFailure
def test_connection_receiver_close_all(self):
with no_fd_leaks(self):
with test_broker() as broker:
c = proton.utils.BlockingConnection("{0}:{1}".format(*broker.get_acceptor_sockname()))
s = c.create_receiver("anAddress")
s.close()
c.close()
gc.collect()
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