88 lines
2.7 KiB
Python
88 lines
2.7 KiB
Python
#!/usr/bin/env python
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# Copyright 2012 Hewlett-Packard Development Company, L.P.
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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 logging
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import argparse
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import daemon
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import signal
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import sys
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from lbaas_mgm.listener import Listener
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class Server(object):
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def __init__(self, logger, nodes):
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self.logger = logger
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self.nodes = nodes
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def main(self):
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self.logger.info(
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'LBaaS Pool Manager started with {nodes} nodes'
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.format(nodes=self.nodes)
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)
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signal.signal(signal.SIGINT, self.exit_handler)
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signal.signal(signal.SIGTERM, self.exit_handler)
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listner = Listener(self.logger)
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try:
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listner.run()
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except Exception as e:
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self.logger.critical(
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'Exception: {eclass}, {exception}'
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.format(eclass=e.__class__, exception=e)
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)
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self.shutdown(True)
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self.shutdown(False)
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def exit_handler(self, signum, frame):
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signal.signal(signal.SIGINT, signal.SIG_IGN)
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signal.signal(signal.SIGTERM, signal.SIG_IGN)
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def shutdown(self, error):
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if not error:
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self.logger.info('Safely shutting down')
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sys.exit(0)
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else:
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self.logger.info('Shutting down due to error')
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sys.exit(1)
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def main():
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parser = argparse.ArgumentParser(
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description='LBaaS Node Management Daemon'
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)
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parser.add_argument('nodes', metavar='N', type=int,
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help='number of nodes to maintain')
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parser.add_argument('-d', dest='nodaemon', action='store_true',
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help='do not run in daemon mode')
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options = parser.parse_args()
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logging.basicConfig(
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format='%(asctime)-6s: %(name)s - %(levelname)s - %(message)s',
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filename='/var/log/lbaas/lbaas_mgm.log'
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)
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logger = logging.getLogger('lbaas_mgm')
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logger.setLevel(logging.INFO)
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pid_fn = '/var/run/lbaas_mgm/lbaas_mgm.pid'
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pid = daemon.pidlockfile.TimeoutPIDLockFile(pid_fn, 10)
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server = Server(logger, options.nodes)
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if options.nodaemon:
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server.main()
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else:
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with daemon.DaemonContext(pidfile=pid):
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server.main()
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