#!/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 # PL host Linux host # 0 ------- Internet ------ 0 # from nepi.execution.ec import ExperimentController, ECState from nepi.execution.resource import ResourceState, ResourceAction from nepi.resources.linux.node import OSType from optparse import OptionParser, SUPPRESS_HELP import getpass import os import time def add_node(ec, host, user, ssh_key = None): node = ec.register_resource("LinuxNode") 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, os_type, peers): if os_type == OSType.FEDORA: depends = ( " autoconf openssl-devel expat-devel libpcap-devel " " ecryptfs-utils-devel libxml2-devel automake gawk " " gcc gcc-c++ git pcre-devel make ") else: # UBUNTU 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-0.7.1.tar.gz" build = ( # Evaluate if ccnx binaries are already installed " ( " " test -f ${BIN}/ccnx-0.7.1/bin/ccnd" " ) || ( " # If not, untar and build " ( " " mkdir -p ${SRC}/ccnx-0.7.1 && " " tar xf ${SRC}/ccnx-0.7.1.tar.gz --strip-components=1 -C ${SRC}/ccnx-0.7.1 " " ) && " "cd ${SRC}/ccnx-0.7.1 && " # Just execute and silence warnings... "( ./configure && make ) " " )") install = ( # Evaluate if ccnx binaries are already installed " ( " " test -f ${BIN}/ccnx-0.7.1/bin/ccnd" " ) || ( " " mkdir -p ${BIN}/ccnx-0.7.1/bin && " " cp -r ${SRC}/ccnx-0.7.1/bin ${BIN}/ccnx-0.7.1" " )" ) env = "PATH=$PATH:${BIN}/ccnx-0.7.1/bin" # BASH command -> ' ccndstart ; ccndc add ccnx:/ udp host ; ccnr ' command = "ccndstart && " peers = map(lambda peer: "ccndc add ccnx:/ udp %s" % peer, peers) command += " ; ".join(peers) + " && " command += " ccnr & " app = ec.register_resource("LinuxApplication") ec.set(app, "depends", depends) ec.set(app, "sources", sources) ec.set(app, "install", install) ec.set(app, "build", build) ec.set(app, "env", env) ec.set(app, "command", command) return app def add_publish(ec, movie): env = "PATH=$PATH:${BIN}/ccnx-0.7.1/bin" command = "ccnseqwriter -r ccnx:/VIDEO" app = ec.register_resource("LinuxApplication") ec.set(app, "stdin", movie) ec.set(app, "env", env) ec.set(app, "command", command) return app def add_stream(ec): env = "PATH=$PATH:${BIN}/ccnx-0.7.1/bin" command = "sudo -S dbus-uuidgen --ensure ; ( ccncat ccnx:/VIDEO | vlc - ) " app = ec.register_resource("LinuxApplication") ec.set(app, "depends", "vlc") ec.set(app, "forwardX11", True) ec.set(app, "env", env) ec.set(app, "command", command) return app def get_options(): pl_slice = os.environ.get("PL_SLICE") # We use a specific SSH private key for PL if the PL_SSHKEY is specified or the # id_rsa_planetlab exists default_key = "%s/.ssh/id_rsa_planetlab" % (os.environ['HOME']) default_key = default_key if os.path.exists(default_key) else None pl_ssh_key = os.environ.get("PL_SSHKEY", default_key) # Default planetlab host pl_host = "planetlab2.u-strasbg.fr" # Another Linux host # IMPORTANT NOTE: you must replace this host for another one # you have access to. You must set up your SSH keys so # the host can be accessed through SSH without prompting # for a password. The host must allow X forwarding using SSH. linux_host = 'roseval.pl.sophia.inria.fr' linux_user = getpass.getuser() usage = "usage: %prog -p -s -l -u -m -e -i " parser = OptionParser(usage=usage) parser.add_option("-p", "--pl-host", dest="pl_host", help="PlanetLab hostname (already added to the on the web site)", default = pl_host, type="str") parser.add_option("-s", "--pl-slice", dest="pl_slice", help="PlanetLab slicename", default = pl_slice, type="str") parser.add_option("-l", "--linux-host", dest="linux_host", help="Hostname of second Linux host (non PlanetLab)", default = linux_host, type="str") parser.add_option("-u", "--linux-user", dest="linux_user", help="User for extra Linux host (non PlanetLab)", default = linux_user, type="str") parser.add_option("-m", "--movie", dest="movie", help="Stream movie", type="str") parser.add_option("-e", "--exp-id", dest="exp_id", help="Label to identify experiment", type="str") parser.add_option("-i", "--pl-ssh-key", dest="pl_ssh_key", help="Path to private SSH key to be used for connection", default = pl_ssh_key, type="str") (options, args) = parser.parse_args() if not options.movie: parser.error("movie is a required argument") return (options.pl_host, options.pl_slice, options.linux_host, options.linux_user, options.movie, options.exp_id, options.pl_ssh_key) if __name__ == '__main__': ( pl_host, pl_user, linux_host, linux_user, movie, exp_id, pl_ssh_key ) = get_options() # Create the ExperimentController instance ec = ExperimentController(exp_id = exp_id) # Register ResourceManager (RM) # Register first PlanetLab host node1 = add_node(ec, pl_host, pl_user, pl_ssh_key) # Register CCN setup for PL host peers = [linux_host] ccnd1 = add_ccnd(ec, OSType.FEDORA, peers) ec.register_connection(ccnd1, node1) # Register content producer application (ccnseqwriter) pub = add_publish(ec, movie) 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, linux_host, linux_user) # Register CCN setup for Linux host peers = [pl_host] ccnd2 = add_ccnd(ec, "ubuntu", peers) ec.register_connection(ccnd2, node2) # Register consumer application (ccncat) stream = add_stream(ec) ec.register_connection(stream, node2) # The stream can only be retrieved after ccnd is running ec.register_condition(stream, ResourceAction.START, ccnd2, ResourceState.STARTED) # And also, the stream can only be retrieved after it was published ec.register_condition(stream, ResourceAction.START, pub, ResourceState.STARTED) # Deploy all ResourceManagers ec.deploy() # Wait until the applications are finished apps = [ccnd1, pub, ccnd2, stream] ec.wait_finished(apps) # Shutdown the experiment controller ec.shutdown()