From: Alina Quereilhac Date: Thu, 3 May 2012 18:08:46 +0000 (+0200) Subject: adding example with ccn over planetlab X-Git-Tag: nepi-3.0.0~163^2~20 X-Git-Url: http://git.onelab.eu/?a=commitdiff_plain;h=3ebba8be57c425910af92a7f2ee76c14ed379ca1;p=nepi.git adding example with ccn over planetlab --- diff --git a/examples/planetlab_ccnd.py b/examples/planetlab_ccnd.py new file mode 100644 index 00000000..a553f745 --- /dev/null +++ b/examples/planetlab_ccnd.py @@ -0,0 +1,234 @@ +#!/usr/bin/env python + +from nepi.core.design import ExperimentDescription, FactoriesProvider +from nepi.core.execute import ExperimentController +import ipaddr +import math +from optparse import OptionParser, SUPPRESS_HELP +import os +import signal +import string +import tempfile +import time + +# Trak SIGTERM, and set global termination flag instead of dying +TERMINATE = [] +def _finalize(sig,frame): + global TERMINATE + TERMINATE.append(None) +signal.signal(signal.SIGTERM, _finalize) +signal.signal(signal.SIGINT, _finalize) + +def create_slice_desc(slicename, plc_host, pl_user, pl_pwd, pl_ssh_key, + port_base, root_dir, exp_desc): + pl_provider = FactoriesProvider("planetlab") + slice_desc = exp_desc.add_testbed_description(pl_provider) + slice_desc.set_attribute_value("homeDirectory", root_dir) + slice_desc.set_attribute_value("slice", slicename) + slice_desc.set_attribute_value("sliceSSHKey", pl_ssh_key) + slice_desc.set_attribute_value("authUser", pl_user) + slice_desc.set_attribute_value("authPass", pl_pwd) + slice_desc.set_attribute_value("plcHost", plc_host) + slice_desc.set_attribute_value("tapPortBase", port_base) + # Kills all running processes before starting the experiment + slice_desc.set_attribute_value("dedicatedSlice", True) + # Delets all directories in the slice's home directory of each node + # ATTENTION: This will remove result files from previous runs!! + slice_desc.set_attribute_value("cleanRoot", True) + slice_desc.set_attribute_value("plLogLevel", "DEBUG") + return slice_desc + +def create_node(hostname, pl_inet, slice_desc): + pl_node = slice_desc.create("Node") + pl_node.set_attribute_value("hostname", hostname) + pl_node.set_attribute_value("label", hostname) + pl_iface = slice_desc.create("NodeInterface") + #pl_iface.set_attribute_value("label", "iface_%s" % node) + pl_iface.connector("inet").connect(pl_inet.connector("devs")) + pl_node.connector("devs").connect(pl_iface.connector("node")) + return pl_node + +def create_tunnel(node, peer, pl_nodes, slice_desc, subnet): + pl_node = pl_nodes[node] + pl_peer = pl_nodes[peer] + + pl_tun = slice_desc.create("TunInterface") + pl_tun.set_attribute_value("label", "tun_%s%s" % (node, peer)) + pl_node.connector("devs").connect(pl_tun.connector("node")) + + pl_tunpeer = slice_desc.create("TunInterface") + pl_tunpeer.set_attribute_value("label", "tun_%s%s" % (peer, node)) + pl_peer.connector("devs").connect(pl_tunpeer.connector("node")) + + pl_tun.connector("udp").connect(pl_tunpeer.connector("udp")) + + iterhosts = subnet.iterhosts() + addr = iterhosts.next() + ip = pl_tun.add_address() + ip.set_attribute_value("Address", addr.exploded) + ip.set_attribute_value("NetPrefix", subnet.prefixlen) + + peeraddr = iterhosts.next() + peerip = pl_tunpeer.add_address() + peerip.set_attribute_value("Address", peeraddr.exploded) + peerip.set_attribute_value("NetPrefix", subnet.prefixlen) + +def create_ccnd(pl_node, slice_desc): + pl_app = slice_desc.create("CCNxDaemon") + # Add multicast ccn route + pl_app.set_attribute_value("ccnroutes", "udp 224.0.0.204 2869") + pl_app.enable_trace("stdout") + pl_app.enable_trace("stderr") + pl_app.connector("node").connect(pl_node.connector("apps")) + +def create_ccnpoke(pl_node, slice_desc): + pl_app = slice_desc.create("Application") + path_to_video = os.path.join(os.path.dirname(os.path.abspath(__file__)), + "big_buck_bunny_240p_mpeg4_lq.ts") + pl_app.set_attribute_value("stdin", path_to_video) + #pl_app.set_attribute_value("command", "ccnsendchunks ccnx:/VIDEO") + pl_app.set_attribute_value("command", "ccnpoke ccnx:/VIDEO") + pl_app.enable_trace("stdout") + pl_app.enable_trace("stderr") + pl_app.connector("node").connect(pl_node.connector("apps")) + +def create_local_ccncatchunks(hostname, ccn_bin): + path = os.path.join(os.getcwd(), "ccncatchunks.sh") + exec_ = ( "export PATH=$PATH:%(path_to_ccn_bin)s ; " + "ccndstart ; " + "ccndc add ccnx:/ udp %(hostname)s ; " + "ccncatchunks2 ccnx:/VIDEO | vlc -" + ) % dict( + hostname = hostname, + path_to_ccn_bin = ccn_bin, + ) + + f = open(path, "w") + f.write(exec_) + f.close() + +def create_ed(hostnames, vsys_vnet, slicename, plc_host, pl_user, pl_pwd, pl_ssh_key, + port_base, root_dir, ccn_bin): + + # Create the experiment description object + exp_desc = ExperimentDescription() + + # Create the slice description object + slice_desc = create_slice_desc(slicename, plc_host, pl_user, pl_pwd, pl_ssh_key, + port_base, root_dir, exp_desc) + + # Create the Internet box object + pl_inet = slice_desc.create("Internet") + + # Create the Node boxes + pl_nodes = dict() + for hostname in hostnames: + pl_node = create_node(hostname, pl_inet, slice_desc) + pl_nodes[hostname] = pl_node + + # Get the base network segment (slice vsys_vnet) to assign all the IP addresses + # to the virtual interfaces + base = ipaddr.IPNetwork(vsys_vnet) + + # Calculate the number of virtual networks required to connect all the nodes + # with all other nodes as the binomial coeficient C(n, 2), with n = #nodes + n = len(hostnames) + c = math.factorial(n) / (2 * math.factorial(n-2)) + + # Validate that we can get 'c' /30 subnetworks + if c > math.pow(2, (30 - base.prefixlen)): + raise RuntimeError("Insufficient address segment %s for experiment", vsys_vnet) + + # Create the subnetwors iterator + iter_sub = base.iter_subnets(new_prefix=30) + + # Create tunnels between nodes + for i, node in enumerate(hostnames): + peers = hostnames[i+1:] + for peer in peers: + subnet = iter_sub.next() + create_tunnel(node, peer, pl_nodes, slice_desc, subnet) + + # Create ccnd daemons in all nodes + for pl_node in pl_nodes.values(): + create_ccnd(pl_node, slice_desc) + + # Create a ccnpoke in a chosen node to publish some content + hostname = pl_nodes.keys()[0] + pl_node = pl_nodes[hostname] + create_ccnpoke(pl_node, slice_desc) + + create_local_ccncatchunks(hostname, ccn_bin) + + return exp_desc + +def run(hostnames, vsys_vnet, slicename, plc_host, pl_user, pl_pwd, pl_ssh_key, + port_base, root_dir, ccn_bin): + + exp_desc = create_ed(hostnames, vsys_vnet, slicename, plc_host, pl_user, + pl_pwd, pl_ssh_key, port_base, root_dir, ccn_bin) + + xml = exp_desc.to_xml() + controller = ExperimentController(xml, root_dir) + controller.start() + while not TERMINATE: + time.sleep(0.5) + + controller.stop() + controller.shutdown() + + +if __name__ == '__main__': + root_dir = tempfile.mkdtemp() + slicename = os.environ.get("PL_SLICE") + pl_host = os.environ.get("PL_HOST", "www.planet-lab.eu") + port_base = 2000 + (os.getpid() % 1000) * 13 + pl_ssh_key = os.environ.get( + "PL_SSH_KEY", + "%s/.ssh/id_rsa_planetlab" % (os.environ['HOME'],) ) + pl_user = os.environ.get('PL_USER') + pl_pwd = os.environ.get('PL_PASS') + vsys_vnet = os.environ.get('PL_VSYS_NET') + pl_ccn_bin = os.environ.get('PL_CCN_BIN') + pl_hostnames = os.environ.get('PL_HOSTNAMES') + default_hostnames = ['openlab02.pl.sophia.inria.fr', + 'ple4.ipv6.lip6.fr', + 'planetlab2.di.unito.it', + 'merkur.planetlab.haw-hamburg.de', + #'planetlab1.cs.uit.no', + #'planetlab3.cs.st-andrews.ac.uk', + #'planetlab2.cs.uoi.gr', + #'planetlab3.xeno.cl.cam.ac.uk', + #'planet2.inf.tu-dresden.de', + #'planetlab2.csg.uzh.ch', + #'planetlab2.upm.ro', + #'planetlab-um00.di.uminho.pt', + #'planetlabpc2.upf.edu', + #'planet2.elte.hu', + 'planetlab2.esprit-tn.com' ] + + + usage = "usage: %prog -s -H -b -k -u -p -v -N " + parser = OptionParser(usage=usage) + parser.add_option("-s", "--slicename", dest="slicename", help="PlanetLab slicename", default=slicename, type="str") + parser.add_option("-H", "--pl-host", dest="pl_host", help="PlanetLab site (e.g. www.planet-lab.eu)", default=pl_host, type="str") + parser.add_option("-b", "--ccn-bin", dest="ccn_bin", help="Path to ccnx bin directory", default=pl_ccn_bin, type="str") + parser.add_option("-k", "--ssh-key", dest="pl_ssh_key", help="Path to private ssh key used for PlanetLab authentication", default=pl_ssh_key, type="str") + parser.add_option("-u", "--pl-user", dest="pl_user", help="PlanetLab account user (i.e. Registration email address)", default=pl_user, type="str") + parser.add_option("-p", "--pl-pwd", dest="pl_pwd", help="PlanetLab account password", default=pl_pwd, type="str") + parser.add_option("-v", "--vsys-vnet", dest="vsys_vnet", help="Value of the vsys_vnet tag addigned to your slice. (e.g. 192.168.3.0/16)", default=vsys_vnet, type="str") + parser.add_option("-N", "--host-names", dest="hostnames", help="Comma separated list of PlanetLab hostnames to use", default=pl_hostnames, type="str") + (options, args) = parser.parse_args() + + hostnames = map(string.strip, options.hostnames.split(",")) if options.hostnames else default_hostnames + vsys_vnet = options.vsys_vnet + slicename = options.slicename + pl_host = options.pl_host + pl_user= options.pl_user + pl_pwd = options.pl_pwd + pl_ssh_key = options.pl_ssh_key + ccn_bin = options.ccn_bin + + run(hostnames, vsys_vnet, slicename, pl_host, pl_user, pl_pwd, pl_ssh_key, + port_base, root_dir, ccn_bin) +