#! /usr/bin/env python """ Team daemon example. Implements very basic active backup functionality. Note that this application spawns its own team device instead of connecting to an existing one. Copyright (C) 2011-2013 Jiri Pirko <jiri@resnulli.us> This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA """ __author__ = """ jiri@resnulli.us (Jiri Pirko) """ import sys import getopt import team import signal def usage(): """ Print usage of this app """ print "Usage: team_daemon.py [OPTION...]" print "" print " -h, --help print this message" print " -t, --team-name=NAME name of team device" print " -p, --port=NETDEV port device (can be defined multiple times)" print " -m, --mode=MODENAME name of team mode" sys.exit() class TeamDaemon(object): def __init__(self): def_team_name = "teamtest0" self._team_name = def_team_name def_mode_name = "roundrobin" self._mode_name = def_mode_name self._port_names = [] self._old_active_hwaddr = None self._parse_cmdline() if self._team_name == def_team_name: print "Using default team name \"%s\"" % def_team_name if self._mode_name == def_mode_name: print "Using default mode \"%s\"" % def_mode_name print "Team name is \"%s\"" % self._team_name self._t = team.Team(self._team_name, create=True, destroy=True) self._t.set_mode_name(self._mode_name) for port_name in self._port_names: self._t.port_add(port_name) if self._mode_name == "activebackup": self._port_change_handler_ab = team.TeamChangeHandler( self._port_change_handler_ab_func, None, team.TEAM_PORT_CHANGE) self._t.change_handler_register(self._port_change_handler_ab) self._port_change_handler = team.TeamChangeHandler( self._port_change_handler_func, None, team.TEAM_PORT_CHANGE) self._t.change_handler_register(self._port_change_handler) self._option_change_handler = team.TeamChangeHandler( self._option_change_handler_func, None, team.TEAM_OPTION_CHANGE) self._t.change_handler_register(self._option_change_handler) def _parse_cmdline(self): try: opts, args = getopt.getopt( sys.argv[1:], "ht:p:m:", ["help", "team-name=", "port=", "mode="] ) except getopt.GetoptError, err: print str(err) usage() for opt, arg in opts: if opt in ("-h", "--help"): usage() elif opt in ("-t", "--team-name"): self._team_name = arg elif opt in ("-p", "--port"): self._port_names.append(arg) elif opt in ("-m", "--mode"): self._mode_name = arg def _port_change_handler_func(self, unused): print "------------------\nport change\n\tport list:" for port in self._t.port_list(): print ("\tifname %s, linkup %d, changed %d, speed %d, duplex %d, removed %d" % (port.ifname, port.linkup, port.changed, port.speed, port.duplex, port.removed)) return 0 def _option_change_handler_func(self, unused): print "------------------\noption change\n\toption list:" for option in self._t.option_list(): print ("\t%s = %s (changed %d)" % (option.name, option.value, option.changed)) return 0 def _change_active_port(self, old_active, new_active): if old_active: old_active.set_hwaddr(self._old_active_hwaddr) self._t.set_active_port(new_active) mac = self._t.get_hwaddr() self._old_active_hwaddr = new_active.get_hwaddr() new_active.set_hwaddr(mac) print "*** new active port \"%s\" selected" % new_active def _port_change_handler_ab_func(self, unused): try: active = self._t.get_active_port() if active: print "*** current active port is \"%s\"" % active if active.linkup: return elif active.changed: print "*** active port \"%s\" lost link" % active except KeyError: active = None print "*** no current active port set" best = None for port in self._t.port_list(): if port.linkup: if (not best or port.speed > best.speed or (port.speed == best.speed and port.duplex > port.duplex)): best = port if best: self._change_active_port(active, best) def close(self): self._t.close() def loop_forever(self): self._t.loop_forever() def kill_loop(self): self._t.kill_loop() def main(): team_daemon = TeamDaemon() def kill_loop(signum, frame): team_daemon.kill_loop() signal.signal(signal.SIGINT, kill_loop) signal.signal(signal.SIGHUP, kill_loop) signal.signal(signal.SIGTERM, kill_loop) team_daemon.loop_forever() team_daemon.close() if __name__ == "__main__": main()