mirror of
https://github.com/openvswitch/ovs
synced 2025-08-29 05:18:13 +00:00
00c0858987
Until now, it has been the responsibility of an individual daemon to call die_if_already_running() at an appropriate time. A long time ago, this had to happen *before* daemonizing, because once the process daemonized itself there was no way to report failure to the process that originally started the daemon. With the introduction of daemonize_start(), this is now possible, but we haven't been taking advantage of it. Therefore, this commit integrates the die_if_already_running() call into daemonize_start() and deletes the calls to it from individual daemons.
79 lines
2.2 KiB
Python
79 lines
2.2 KiB
Python
# Copyright (c) 2010, 2011 Nicira Networks.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import getopt
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import signal
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import sys
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import time
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import ovs.daemon
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import ovs.util
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def handler(signum, frame):
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raise Exception("Signal handler called with %d" % signum)
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def main(argv):
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signal.signal(signal.SIGHUP, handler)
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try:
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options, args = getopt.gnu_getopt(
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argv[1:], 'b', ["bail", "help"] + ovs.daemon.LONG_OPTIONS)
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except getopt.GetoptError, geo:
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sys.stderr.write("%s: %s\n" % (ovs.util.PROGRAM_NAME, geo.msg))
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sys.exit(1)
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bail = False
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for key, value in options:
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if key == '--help':
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usage()
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elif key in ['-b', '--bail']:
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bail = True
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elif not ovs.daemon.parse_opt(key, value):
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sys.stderr.write("%s: unhandled option %s\n"
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% (ovs.util.PROGRAM_NAME, key))
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sys.exit(1)
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ovs.daemon.daemonize_start()
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if bail:
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sys.stderr.write("%s: exiting after daemonize_start() as requested\n"
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% ovs.util.PROGRAM_NAME)
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sys.exit(1)
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ovs.daemon.daemonize_complete()
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while True:
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time.sleep(1)
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def usage():
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sys.stdout.write("""\
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%s: Open vSwitch daemonization test program for Python
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usage: %s [OPTIONS]
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""" % ovs.util.PROGRAM_NAME)
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ovs.daemon.usage()
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sys.stdout.write("""
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Other options:
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-h, --help display this help message
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-b, --bail exit with an error after daemonize_start()
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""")
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sys.exit(0)
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if __name__ == '__main__':
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try:
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main(sys.argv)
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except SystemExit:
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# Let system.exit() calls complete normally
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raise
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except:
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sys.exit(ovs.daemon.RESTART_EXIT_CODE)
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