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https://github.com/openvswitch/ovs
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0a68ffd234
Many of the currently implemented Python daemons, and likely many daemons to be implemented in the future, could benefit from unixctl support even if only to implement "exit" and "version" commands. This patch implements unixctl in Python. Signed-off-by: Ethan Jackson <ethan@nicira.com>
86 lines
2.4 KiB
Python
86 lines
2.4 KiB
Python
# Copyright (c) 2012 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 argparse
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import sys
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import ovs.daemon
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import ovs.unixctl
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vlog = ovs.vlog.Vlog("test-unixctl")
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exiting = False
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def unixctl_exit(conn, unused_argv, aux):
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assert aux == "aux_exit"
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global exiting
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exiting = True
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conn.reply(None)
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def unixctl_echo(conn, argv, aux):
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assert aux == "aux_echo"
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conn.reply(str(argv))
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def unixctl_echo_error(conn, argv, aux):
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assert aux == "aux_echo_error"
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conn.reply_error(str(argv))
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def main():
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parser = argparse.ArgumentParser(
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description="Open vSwitch unixctl test program for Python")
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parser.add_argument("--unixctl", help="UNIXCTL socket location or 'none'.")
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ovs.daemon.add_args(parser)
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ovs.vlog.add_args(parser)
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args = parser.parse_args()
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ovs.daemon.handle_args(args)
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ovs.vlog.handle_args(args)
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ovs.daemon.daemonize_start()
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error, server = ovs.unixctl.UnixctlServer.create(args.unixctl)
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if error:
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ovs.util.ovs_fatal(error, "could not create unixctl server at %s"
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% args.unixctl, vlog)
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ovs.unixctl.command_register("exit", "", 0, 0, unixctl_exit, "aux_exit")
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ovs.unixctl.command_register("echo", "[arg ...]", 1, 2, unixctl_echo,
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"aux_echo")
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ovs.unixctl.command_register("echo_error", "[arg ...]", 1, 2,
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unixctl_echo_error, "aux_echo_error")
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ovs.daemon.daemonize_complete()
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vlog.info("Entering run loop.")
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poller = ovs.poller.Poller()
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while not exiting:
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server.run()
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server.wait(poller)
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if exiting:
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poller.immediate_wake()
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poller.block()
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server.close()
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if __name__ == '__main__':
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try:
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main()
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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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vlog.exception("traceback")
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sys.exit(ovs.daemon.RESTART_EXIT_CODE)
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