#!/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 as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# 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 .
#
# Author: Alina Quereilhac
# NOTE: This experiment example uses the generic LinuxApplication
# ResourceManager to do the CCN set up in the hosts.
# Alternatively, CCN specific ResourceManagers can be used
# (i.e. LinuxCCND, LinuxCCNR, etc...), and those require less
# manual configuration.
#
#
# CCN topology:
#
#
#
# content ccncat
# Linux host Linux host
# 0 ------- Internet ------ 0
#
# Example of how to run this experiment (replace with your information):
#
# $ cd
# python examples/linux/ccn_advanced_transfer.py -a -b -u -i
from nepi.execution.ec import ExperimentController
from nepi.execution.resource import ResourceAction, ResourceState
from optparse import OptionParser
import os
usage = ("usage: %prog -a -b -u -i ")
parser = OptionParser(usage = usage)
parser.add_option("-a", "--hostname1", dest="hostname1",
help="Remote host 1", type="str")
parser.add_option("-b", "--hostname2", dest="hostname2",
help="Remote host 2", type="str")
parser.add_option("-u", "--username", dest="username",
help="Username to SSH to remote host", type="str")
parser.add_option("-i", "--ssh-key", dest="ssh_key",
help="Path to private SSH key to be used for connection",
type="str")
(options, args) = parser.parse_args()
hostname1 = options.hostname1
hostname2 = options.hostname2
username = options.username
ssh_key = options.ssh_key
def add_node(ec, host, user, ssh_key = None):
node = ec.register_resource("linux::Node")
ec.set(node, "hostname", host)
ec.set(node, "username", user)
ec.set(node, "identity", ssh_key)
ec.set(node, "cleanHome", True)
ec.set(node, "cleanProcesses", True)
return node
def add_ccnd(ec, peers):
# Dependencies for Fedora
depends = ( " autoconf openssl-devel expat-devel libpcap-devel "
" ecryptfs-utils-devel libxml2-devel automake gawk "
" gcc gcc-c++ git pcre-devel make ")
# UBUNTU / DEBIAN
# depends = ( " autoconf libssl-dev libexpat-dev libpcap-dev "
# " libecryptfs0 libxml2-utils automake gawk gcc g++ "
# " git-core pkg-config libpcre3-dev make ")
sources = "http://www.ccnx.org/releases/ccnx-0.8.2.tar.gz"
build = (
# Evaluate if ccnx binaries are already installed
" ( "
" test -f ${BIN}/ccnx-0.8.2/bin/ccnd"
" ) || ( "
# If not, untar and build
" ( "
" mkdir -p ${SRC}/ccnx-0.8.2 && "
" tar xf ${SRC}/ccnx-0.8.2.tar.gz --strip-components=1 -C ${SRC}/ccnx-0.8.2 "
" ) && "
"cd ${SRC}/ccnx-0.8.2 && "
# Just execute and silence warnings...
"( ./configure && make ) "
" )")
install = (
# Evaluate if ccnx binaries are already installed
" ( "
" test -f ${BIN}/ccnx-0.8.2/bin/ccnd"
" ) || ( "
" mkdir -p ${BIN}/ccnx-0.8.2/bin && "
" cp -r ${SRC}/ccnx-0.8.2/bin ${BIN}/ccnx-0.8.2"
" )"
)
env = "PATH=$PATH:${BIN}/ccnx-0.8.2/bin"
# BASH command -> ' ccndstart ; ccndc add ccnx:/ udp host ; ccnr '
command = "ccndstart && "
peers = map(lambda peer: "ccndc add ccnx:/ udp %s" % peer, peers)
command += " ; ".join(peers) + " && "
command += " ccnr & "
app = ec.register_resource("linux::Application")
ec.set(app, "depends", depends)
ec.set(app, "sources", sources)
ec.set(app, "install", install)
ec.set(app, "build", build)
ec.set(app, "env", env)
ec.set(app, "command", command)
return app
def add_publish(ec, movie, content_name):
env = "PATH=$PATH:${BIN}/ccnx-0.8.2/bin"
command = "ccnseqwriter -r %s" % content_name
app = ec.register_resource("linux::Application")
ec.set(app, "stdin", movie)
ec.set(app, "env", env)
ec.set(app, "command", command)
return app
def add_ccncat(ec, content_name):
env = "PATH=$PATH:${BIN}/ccnx-0.8.2/bin"
command = "ccncat %s" % content_name
app = ec.register_resource("linux::Application")
ec.set(app, "env", env)
ec.set(app, "command", command)
return app
## Create the experiment controller
ec = ExperimentController(exp_id = "ccn_advanced_transfer")
# Register first PlanetLab host
node1 = add_node(ec, hostname1, username, ssh_key)
# Register CCN setup for host
peers = [hostname2]
ccnd1 = add_ccnd(ec, peers)
ec.register_connection(ccnd1, node1)
# Register content producer application (ccnseqwriter)
## Push the file into the repository
local_path_to_content = os.path.join(
os.path.dirname(os.path.realpath(__file__)),
"..", "big_buck_bunny_240p_mpeg4_lq.ts")
content_name = "ccnx:/test/FILE"
pub = add_publish(ec, local_path_to_content, content_name)
ec.register_connection(pub, node1)
# The movie can only be published after ccnd is running
ec.register_condition(pub, ResourceAction.START,
ccnd1, ResourceState.STARTED)
# Register Linux host
node2 = add_node(ec, hostname2, username, ssh_key)
# Register CCN setup for Linux host
peers = [hostname1]
ccnd2 = add_ccnd(ec, peers)
ec.register_connection(ccnd2, node2)
# Register consumer application (ccncat)
ccncat = add_ccncat(ec, content_name)
ec.register_connection(ccncat, node2)
# The file can only be retrieved after ccnd is running
ec.register_condition(ccncat, ResourceAction.START,
ccnd2, ResourceState.STARTED)
# And also, the file can only be retrieved after it was published
ec.register_condition(ccncat, ResourceAction.START,
pub, ResourceState.STARTED)
# Deploy all ResourceManagers
ec.deploy()
# Wait until the applications are finished
apps = [ccncat]
ec.wait_finished(apps)
stdout = ec.trace(ccncat, "stdout")
f = open("video.ts", "w")
f.write(stdout)
f.close()
# Shutdown the experiment controller
ec.shutdown()
print "Transfered FILE stored localy at video.ts"