examples/netns/local_switch_ping.py

   1 #!/usr/bin/env python
   2 #
   3 #    NEPI, a framework to manage network experiments
   4 #    Copyright (C) 2013 INRIA
   5 #
   6 #    This program is free software: you can redistribute it and/or modify
   7 #    it under the terms of the GNU General Public License version 2 as
   8 #    published by the Free Software Foundation;
   9 #
  10 #    This program is distributed in the hope that it will be useful,
  11 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 #    GNU General Public License for more details.
  14 #
  15 #    You should have received a copy of the GNU General Public License
  16 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 #
  18 # Author: Alina Quereilhac <alina.quereilhac@inria.fr>
  19 #
  20 #
  21 # This example must be executed as root:
  22 # $ sudo PYTHONPATH=$PYTHONPATH:src python examples/netns/local_switch_ping.py
  23
  24 from __future__ import print_function
  25
  26 from nepi.execution.ec import ExperimentController
  27
  28 ec = ExperimentController(exp_id = "netns-local-p2p-ping")
  29
  30 # Simulation will executed in the local machine
  31 node = ec.register_resource("linux::Node")
  32 ec.set(node, "hostname", "localhost")
  33
  34 # Add an emulation resource
  35 emu = ec.register_resource("linux::netns::Emulation")
  36 ec.set(emu, "verbose", True)
  37 ec.register_connection(emu, node)
  38
  39 # Add two emulated nodes
  40 netnsnode1 = ec.register_resource("netns::Node")
  41 ec.register_connection(netnsnode1, emu)
  42
  43 iface1 = ec.register_resource("netns::NodeInterface")
  44 ec.register_connection(iface1, netnsnode1)
  45
  46 ip1 = ec.register_resource("netns::IPv4Address")
  47 ec.set(ip1, "ip", "10.0.0.1")
  48 ec.set(ip1, "prefix", "30")
  49 ec.register_connection(ip1, iface1)
  50
  51 netnsnode2 = ec.register_resource("netns::Node")
  52 ec.register_connection(netnsnode2, emu)
  53
  54 iface2 = ec.register_resource("netns::NodeInterface")
  55 ec.register_connection(iface2, netnsnode2)
  56
  57 ip2 = ec.register_resource("netns::IPv4Address")
  58 ec.set(ip2, "ip", "10.0.0.2")
  59 ec.set(ip2, "prefix", "30")
  60 ec.register_connection(ip2, iface2)
  61
  62 switch = ec.register_resource("netns::Switch")
  63 ec.register_connection(iface1, switch)
  64 ec.register_connection(iface2, switch)
  65
  66 ping = ec.register_resource("netns::Application")
  67 ec.set(ping, "command", "ping -c20 10.0.0.2")
  68 ec.register_connection(ping, netnsnode1)
  69
  70 ec.deploy()
  71
  72 ec.wait_finished([ping])
  73
  74 stdout = ec.trace(ping, "stdout")
  75
  76 ec.shutdown()
  77
  78 print("PING OUTPUT", stdout)