"""
Copyright 2015 Open Networking Foundation (ONF)

Please refer questions to either the onos test mailing list at <onos-test@onosproject.org>,
the System Testing Plans and Results wiki page at <https://wiki.onosproject.org/x/voMg>,
or the System Testing Guide page at <https://wiki.onosproject.org/x/WYQg>

    TestON is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 2 of the License, or
    (at your option) any later version.

    TestON 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 TestON.  If not, see <http://www.gnu.org/licenses/>.
"""

#!/usr/bin/env python

from mininet.net import Mininet
from mininet.topo import Topo
from mininet.node import Host, RemoteController
from mininet.cli import CLI
from mininet.log import setLogLevel

from opticalUtils import LINCSwitch, LINCLink

class OpticalTopo( Topo ):
    """
    A simple optical topology of three LINC nodes(OE*), two OVS switches(ps*), and two hosts:

              OE3
              /\
    h1-ps1-OE1--OE2-ps2-h2

    """
    def build( self ):

        # set up packet layer - OVS + hosts
        s1 = self.addSwitch( 'ps1' )
        s2 = self.addSwitch( 'ps2' )
        h1 = self.addHost( 'h1' )
        h2 = self.addHost( 'h2' )
        self.addLink( s1, h1 )
        self.addLink( s2, h2 )

        # set up ROADMs, add them to oel[]
        oel = []
        an = { "durable": "true" }
        for i in range (1,4):
            oean = { "optical.regens": 0 }
            oel.append( self.addSwitch('OE%s' % i, dpid='0000ffffffffff0%s' % i, annotations=oean, cls=LINCSwitch) )

        # ROADM port numbers are built as: OE1 <-> OE2 = 1200
        # leaving port number up to 100 open for use by Och port
        self.addLink( oel[0], oel[1], port1=1200, port2=2100, annotations=an, cls=LINCLink )
        self.addLink( oel[1], oel[2], port1=2300, port2=3200, annotations=an, cls=LINCLink )
        self.addLink( oel[2], oel[0], port1=3100, port2=1300, annotations=an, cls=LINCLink )

        # cross-connects between OVSes and LINCs
        self.addLink( s1, oel[0], port1=2, port2=1, annotations=an, cls=LINCLink )
        self.addLink( s2, oel[1], port1=2, port2=1, annotations=an, cls=LINCLink )


def setup( ctls ):
    net = Mininet( topo=OpticalTopo(), controller=None )
    i = 1
    for ctl in ctls:
        net.addController( RemoteController( 'c%d' % i, ip=ctl ) )
        i+=1

    net.start()
    LINCSwitch.bootOE( net )
    CLI( net )
    net.stop()
    LINCSwitch.shutdownOE()


if __name__ == "__main__" :
    import sys
    if len( sys.argv ) >= 2 :
        setLogLevel( 'info' )
        ctls = sys.argv[ 1: ]
        setup( ctls )
    else:
        print('./ectopo.py [IP1] [IP2]...\n')