#!/usr/bin/env python
#
#    NEPI, a framework to manage network experiments
#    Copyright (C) 2013 INRIA
#
#    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, see <http://www.gnu.org/licenses/>.
#
# Author: Alina Quereilhac <alina.quereilhac@inria.fr>
#
#
# This example must be executed as root: 
# $ sudo PYTHONPATH=$PYTHONPATH:src python examples/netns/local_switch_ping.py

from __future__ import print_function

from nepi.execution.ec import ExperimentController 

ec = ExperimentController(exp_id = "netns-local-p2p-ping")

# Simulation will executed in the local machine
node = ec.register_resource("linux::Node")
ec.set(node, "hostname", "localhost")

# Add an emulation resource
emu = ec.register_resource("linux::netns::Emulation")
ec.set(emu, "verbose", True)
ec.register_connection(emu, node)

# Add two emulated nodes
netnsnode1 = ec.register_resource("netns::Node")
ec.register_connection(netnsnode1, emu)

iface1 = ec.register_resource("netns::NodeInterface")
ec.register_connection(iface1, netnsnode1)

ip1 = ec.register_resource("netns::IPv4Address")
ec.set(ip1, "ip", "10.0.0.1")
ec.set(ip1, "prefix", "30")
ec.register_connection(ip1, iface1)

netnsnode2 = ec.register_resource("netns::Node")
ec.register_connection(netnsnode2, emu)

iface2 = ec.register_resource("netns::NodeInterface")
ec.register_connection(iface2, netnsnode2)

ip2 = ec.register_resource("netns::IPv4Address")
ec.set(ip2, "ip", "10.0.0.2")
ec.set(ip2, "prefix", "30")
ec.register_connection(ip2, iface2)

switch = ec.register_resource("netns::Switch")
ec.register_connection(iface1, switch)
ec.register_connection(iface2, switch)

ping = ec.register_resource("netns::Application")
ec.set(ping, "command", "ping -c20 10.0.0.2")
ec.register_connection(ping, netnsnode1)

ec.deploy()

ec.wait_finished([ping])

stdout = ec.trace(ping, "stdout") 

ec.shutdown()

print("PING OUTPUT", stdout)