#!/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 .
#
# Authors : Julien Tribino
# Alina Quereilhac
#
# Topology :
#
# Switch1 ------ Switch2 ------- Switch2
# / | \
# / | \
# / | \
# Host1 Host3 Host2
#
#
# Execution example:
#
# $ PYTHONPATH=$PYTHONPATH:src/ python examples/openvswitch/ovs_ping_3_switches.py -n "192.168.3.0/24" -C "1.1.1.1" -s -i /~/.ssh/id_rsa
#
from __future__ import print_function
from nepi.execution.ec import ExperimentController
import os
from optparse import OptionParser
import sys
import time
def add_node(ec, host, user, pl_user, pl_password, identity):
node = ec.register_resource("planetlab::Node")
ec.set(node, "hostname", host)
ec.set(node, "username", user)
ec.set(node, "identity", identity)
if pl_user:
ec.set(node, "pluser", pl_user)
if pl_password:
ec.set(node, "plpassword", pl_password)
if identity:
ec.set(node, "identity", identity)
ec.set(node, "cleanExperiment", True)
ec.set(node, "cleanProcesses", True)
return node
def add_ovs(ec, bridge_name, virtual_ip_pref, controller_ip, controller_port, node):
ovs = ec.register_resource("planetlab::OVSSwitch")
ec.set(ovs, "bridge_name", bridge_name)
ec.set(ovs, "virtual_ip_pref", virtual_ip_pref)
ec.set(ovs, "controller_ip", controller_ip)
ec.set(ovs, "controller_port", controller_port)
ec.register_connection(ovs, node)
return ovs
def add_port(ec, port_name, network, ovs):
port = ec.register_resource("planetlab::OVSPort")
ec.set(port, "port_name", port_name)
ec.set(port, "network", network)
ec.register_connection(port, ovs)
return port
def add_tap(ec, ip, prefix, pointopoint, node):
tap = ec.register_resource("planetlab::Tap")
ec.set(tap, "ip", ip)
ec.set(tap, "prefix", prefix)
ec.set(tap, "pointopoint", pointopoint)
ec.set(tap, "up", True)
ec.register_connection(tap, node)
return tap
def add_tunnel(ec, port0, tap):
tunnel = ec.register_resource("linux::UdpTunnel")
ec.register_connection(port0, tunnel)
ec.register_connection(tunnel, tap)
return tunnel
def add_app(ec, command, node):
app = ec.register_resource("linux::Application")
ec.set(app, "command", command)
ec.register_connection(app, node)
return app
def parse_args():
pl_slice = os.environ.get("PL_SLICE")
pl_user = os.environ.get("PL_USER")
pl_pass = os.environ.get("PL_PASS")
identity = os.environ.get("PL_SSHKEY")
usage = ("usage: %prog -a -b -c "
"-d -e -f "
"-n -C -s -u "
"-p -i ")
switch1 = "planetlab2.virtues.fi"
switch2 = "planetlab2.upc.es"
switch3 = "inriarennes1.irisa.fr"
host1 = "planetlab2.ionio.gr"
host2 = "iraplab2.iralab.uni-karlsruhe.de"
host3 = "planetlab2.diku.dk"
parser = OptionParser(usage = usage)
parser.add_option("-a", "--host1", dest="host1",
help="Hostname for PlanetLab host 1", default=host1)
parser.add_option("-b", "--host2", dest="host2",
help="Hostname for PlanetLab host 2", default=host2)
parser.add_option("-c", "--host3", dest="host3",
help="Hostname for PlanetLab host 3", default=host3)
parser.add_option("-d", "--switch1", dest="switch1",
help="Hostname for PlanetLab switch 1", default=switch1)
parser.add_option("-e", "--switch2", dest="switch2",
help="Hostname for PlanetLab switch 2", default=switch2)
parser.add_option("-f", "--switch3", dest="switch3",
help="Hostname for PlanetLab switch 3", default=switch3)
parser.add_option("-n", "--vsys_vnet", dest="vsys_vnet",
help="Overlay network address of the form x.x.x.x/yy. "
"Must correspond to the vsys_vnet tag on the PlanetLab slice")
parser.add_option("-C", "--controller", dest="controller",
help="IP address for the OpenFlow controller, if one has been deployed",
default="1.1.1.1")
parser.add_option("-s", "--slicename", dest="slicename",
help="Name of PlanetLab slice",
default=pl_slice)
parser.add_option("-u", "--pl_user", dest="pl_user",
help="PlanetLab user (email address)",
default=pl_user)
parser.add_option("-p", "--pl_pass", dest="pl_pass",
help="PlanetLab password",
default=pl_pass)
parser.add_option("-i", "--identity", dest="identity",
help="Path to SSH key",
default=identity)
(options, args) = parser.parse_args()
return (options.host1, options.host2, options.host3, options.switch1,
options.switch2, options.switch3, options.vsys_vnet,
options.controller, options.slicename, options.pl_user,
options.pl_pass, identity)
(host1, host2, host3, switch1, switch2, switch3, vsys_vnet, controller,
slicename, pl_user, pl_pass, identity) = parse_args()
# Create the EC
ec = ExperimentController(exp_id = "ovs_3_switch")
net = vsys_vnet.split("/")
prefix = net[-1]
network = net[0]
net_segs = network.split(".")
ip1 = "%s.1" % ".".join(net_segs[:-1]) # x.x.x.1
ip2 = "%s.2" % ".".join(net_segs[:-1]) # x.x.x.2
ip3 = "%s.3" % ".".join(net_segs[:-1]) # x.x.x.3
ip4 = "%s.4" % ".".join(net_segs[:-1]) # x.x.x.4
ip5 = "%s.5" % ".".join(net_segs[:-1]) # x.x.x.5
ip6 = "%s.6" % ".".join(net_segs[:-1]) # x.x.x.6
### Define topology
# Add switches
s1_node = add_node(ec, switch1, slicename, pl_user, pl_pass, identity)
s2_node = add_node(ec, switch2, slicename, pl_user, pl_pass, identity)
s3_node = add_node(ec, switch3, slicename, pl_user, pl_pass, identity)
# Add OVS switches
addr1 = "%s/%s" % (ip1, prefix) # x.x.x.1/prefix
addr2 = "%s/%s" % (ip2, prefix) # x.x.x.2/prefix
addr3 = "%s/%s" % (ip3, prefix) # x.x.x.3/prefix
ovs1 = add_ovs(ec, "nepi_bridge_1", addr1, controller, "6633", s1_node)
ovs2 = add_ovs(ec, "nepi_bridge_2", addr2, controller, "6633", s2_node)
ovs3 = add_ovs(ec, "nepi_bridge_3", addr3, controller, "6633", s3_node)
# Add ports on ovs
port1 = add_port(ec, "nepi_port1", network, ovs1)
port4 = add_port(ec, "nepi_port4", network, ovs1)
port7 = add_port(ec, "nepi_port7", network, ovs1)
port2 = add_port(ec, "nepi_port2", network, ovs2)
port5 = add_port(ec, "nepi_port5", network, ovs2)
port3 = add_port(ec, "nepi_port3", network, ovs3)
port6 = add_port(ec, "nepi_port6", network, ovs3)
# Add hosts
h1_node = add_node(ec, host1, slicename, pl_user, pl_pass, identity)
h2_node = add_node(ec, host2, slicename, pl_user, pl_pass, identity)
h3_node = add_node(ec, host3, slicename, pl_user, pl_pass, identity)
### Add overlay
# Add tap devices
tap1 = add_tap(ec, ip3, prefix, ip1, h1_node)
tap2 = add_tap(ec, ip4, prefix, ip2, h2_node)
tap3 = add_tap(ec, ip5, prefix, ip6, h3_node)
### Add Pings
# Connect the nodes
tunnel1 = add_tunnel(ec, port1, tap1)
tunnel2 = add_tunnel(ec, port2, tap2)
tunnel3 = add_tunnel(ec, port3, tap3)
tunnel4 = add_tunnel(ec, port4, port5)
tunnel5 = add_tunnel(ec, port7, port6)
apps = dict()
r2ip = dict({
s1_node: ("Switch 1", ip1),
s2_node: ("Switch 2", ip2),
s3_node: ("Switch 3", ip3),
h1_node: ("Host 1", ip4),
h2_node: ("Host 2", ip5),
h3_node: ("Host 3", ip6),
})
# Ping from all resources to all other resources
for r1, (n1, ip1) in r2ip.items():
for r2, (n2, ip2) in r2ip.items():
if r1 == r2:
continue
app = add_app(ec, "ping -c5 %s" % ip2, r1)
key = "Ping from %s to %s" % (n1, n2)
apps[key] = app
ec.deploy()
# py3: no need to transform into a list
# as wait_finished (wait in fact) will do it anyway
ec.wait_finished(apps.values())
# collect results
for key, app in apps.items():
stdout = ec.trace(app, "stdout")
print("***************************", key, "************************")
print(stdout)
print("\n")
# Delete the overlay network
ec.shutdown()