79 lines
2.0 KiB
Python
Executable File
79 lines
2.0 KiB
Python
Executable File
#! /usr/bin/env python
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# Copyright (c) 2019 Red Hat, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import queue
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import signal
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import sys
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import threading
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from oslo_serialization import jsonutils
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from neutron.agent.linux import ip_lib
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EVENT_STOP = threading.Event()
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EVENT_STARTED = threading.Event()
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IP_MONITOR = None
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READ_QUEUE = None
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def sigterm_handler(_signo, _stack_frame):
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global EVENT_STOP
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global IP_MONITOR
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global READ_QUEUE
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EVENT_STOP.set()
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IP_MONITOR.join()
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READ_QUEUE.join()
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exit(0)
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signal.signal(signal.SIGTERM, sigterm_handler)
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def read_queue(temp_file, _queue, event_stop, event_started):
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event_started.wait()
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with open(temp_file, 'w') as f:
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f.write('')
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while not event_stop.is_set():
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try:
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retval = _queue.get(timeout=1)
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except queue.Empty:
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retval = None
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if retval:
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with open(temp_file, 'a+') as f:
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f.write(jsonutils.dumps(retval) + '\n')
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def main(temp_file, namespace):
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global IP_MONITOR
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global READ_QUEUE
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namespace = None if namespace == 'None' else namespace
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_queue = queue.Queue()
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IP_MONITOR = threading.Thread(
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target=ip_lib.ip_monitor,
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args=(namespace, _queue, EVENT_STOP, EVENT_STARTED))
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IP_MONITOR.start()
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READ_QUEUE = threading.Thread(
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target=read_queue,
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args=(temp_file, _queue, EVENT_STOP, EVENT_STARTED))
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READ_QUEUE.start()
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READ_QUEUE.join()
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if __name__ == "__main__":
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main(sys.argv[1], sys.argv[2])
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