# -*- coding: utf-8 -*-
#
# Monitor switch on/off
#
# Copyright (C) 2008-2013 NEC Corporation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2, as
# published by the Free Software Foundation.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#


class SwitchMonitor < Controller
  periodic_timer_event :show_switches, 10


  def start
    @switches = []
  end


  def switch_ready(datapath_id)
    @switches << datapath_id.to_hex
    info "Switch #{ datapath_id.to_hex } is UP"
  end


  def switch_disconnected(datapath_id)
    @switches -= [datapath_id.to_hex]
    info "Switch #{ datapath_id.to_hex } is DOWN"
  end


  private


  def show_switches
    info 'All switches = ' + @switches.sort.join(', ')
  end
end


### Local variables:
### mode: Ruby
### coding: utf-8
### indent-tabs-mode: nil
### End: