1 #!/usr/bin/env python
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3 # NEPI, a framework to manage network experiments
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4 # Copyright (C) 2013 INRIA
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6 # This program is free software: you can redistribute it and/or modify
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7 # it under the terms of the GNU General Public License version 2 as
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8 # published by the Free Software Foundation;
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10 # This program is distributed in the hope that it will be useful,
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11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 # GNU General Public License for more details.
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15 # You should have received a copy of the GNU General Public License
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16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18 # Author: Alina Quereilhac <alina.quereilhac@inria.fr>
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20 from nepi.execution.ec import ExperimentController
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21 from nepi.execution.runner import ExperimentRunner
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22 from nepi.util.netgraph import TopologyType
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23 import nepi.data.processing.ccn.parser as ccn_parser
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29 from scipy import stats
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30 from matplotlib import pyplot
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34 from optparse import OptionParser
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36 usage = ("usage: %prog -s <pl-slice> -u <pl-user> -p <pl-password> "
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37 "-k <pl-ssh-key> -N <nodes>")
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39 parser = OptionParser(usage = usage)
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40 parser.add_option("-s", "--pl-slice", dest="pl_slice",
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41 help="PlanetLab slicename", type="str")
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42 parser.add_option("-u", "--pl-user", dest="pl_user",
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43 help="PlanetLab web username", type="str")
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44 parser.add_option("-p", "--pl-password", dest="pl_password",
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45 help="PlanetLab web password", type="str")
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46 parser.add_option("-k", "--pl-ssh-key", dest="pl_ssh_key",
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47 help="Path to private SSH key associated with the PL account",
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49 parser.add_option("-N", "--nodes", dest="nodes",
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50 help="Comma separated list of Planetlab nodes",
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53 (options, args) = parser.parse_args()
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55 pl_slice = options.pl_slice
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56 pl_ssh_key = options.pl_ssh_key
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57 pl_user = options.pl_user
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58 pl_password = options.pl_password
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59 NODES = options.nodes.strip().split(",")
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61 def avg_interest_rtt(ec, run):
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62 logs_dir = ec.run_dir
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64 # Parse downloaded CCND logs
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67 interest_expiry_count,
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68 interest_dupnonce_count,
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70 content_count) = ccn_parser.process_content_history_logs(
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71 logs_dir, ec.netgraph.topology)
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74 rtts = [content_names[content_name]["rtt"] \
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75 for content_name in content_names.keys()]
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77 # sample mean and standard deviation
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78 sample = numpy.array(rtts)
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79 n, min_max, mean, var, skew, kurt = stats.describe(sample)
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80 std = math.sqrt(var)
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81 ci = stats.t.interval(0.95, n-1, loc = mean,
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82 scale = std/math.sqrt(n))
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85 metrics.append((mean, ci[0], ci[1]))
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89 def normal_law(ec, run, sample):
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90 print "SAMPLE", sample
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92 x = numpy.array(sample)
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95 se = std / math.sqrt(n)
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99 return m * 0.05 >= se95
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101 def post_process(ec, runs):
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104 # plot convergence graph
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105 y = numpy.array([float(m[0]) for m in metrics])
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106 low = numpy.array([float(m[1]) for m in metrics])
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107 high = numpy.array([float(m[2]) for m in metrics])
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108 error = [y - low, high - y]
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109 x = range(1,runs + 1)
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111 # plot average RTT and confidence interval for each iteration
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112 pyplot.errorbar(x, y, yerr = error, fmt='o')
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113 pyplot.plot(x, y, 'r-')
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114 pyplot.xlim([0.5, runs + 0.5])
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115 pyplot.xticks(numpy.arange(1, len(y)+1, 1))
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116 pyplot.xlabel('Iteration')
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117 pyplot.ylabel('Average RTT')
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119 pyplot.savefig("plot.png")
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122 content_name = "ccnx:/test/bunny.ts"
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124 repofile = os.path.join(
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125 os.path.dirname(os.path.realpath(__file__)),
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128 def get_simulator(ec):
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129 simulator = ec.filter_resources("linux::ns3::Simulation")
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132 node = ec.register_resource("linux::Node")
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133 ec.set(node, "hostname", "localhost")
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135 simu = ec.register_resource("linux::ns3::Simulation")
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136 ec.register_connection(simu, node)
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139 return simulator[0]
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141 def add_collector(ec, trace_name, subdir, newname = None):
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142 collector = ec.register_resource("Collector")
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143 ec.set(collector, "traceName", trace_name)
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144 ec.set(collector, "subDir", subdir)
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146 ec.set(collector, "rename", newname)
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150 def add_dce_host(ec, nid):
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151 simu = get_simulator(ec)
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153 host = ec.register_resource("ns3::Node")
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154 ec.set(host, "enableStack", True)
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155 ec.register_connection(host, simu)
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157 # Annotate the graph
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158 ec.netgraph.annotate_node(nid, "host", host)
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160 def add_dce_ccnd(ec, nid):
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161 # Retrieve annotation from netgraph
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162 host = ec.netgraph.node_annotation(nid, "host")
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164 # Add dce ccnd to the dce node
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165 ccnd = ec.register_resource("linux::ns3::dce::CCND")
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166 ec.set (ccnd, "stackSize", 1<<20)
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167 ec.set (ccnd, "debug", 7)
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168 ec.set (ccnd, "capacity", 50000)
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169 ec.set (ccnd, "StartTime", "1s")
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170 ec.set (ccnd, "StopTime", STOP_TIME)
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171 ec.register_connection(ccnd, host)
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173 # Collector to retrieve ccnd log
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174 collector = add_collector(ec, "stderr", str(nid), "log")
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175 ec.register_connection(collector, ccnd)
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177 # Annotate the graph
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178 ec.netgraph.annotate_node(nid, "ccnd", ccnd)
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180 def add_dce_ccnr(ec, nid):
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181 # Retrieve annotation from netgraph
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182 host = ec.netgraph.node_annotation(nid, "host")
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184 # Add a CCN content repository to the dce node
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185 ccnr = ec.register_resource("linux::ns3::dce::CCNR")
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186 ec.set (ccnr, "repoFile1", repofile)
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187 ec.set (ccnr, "stackSize", 1<<20)
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188 ec.set (ccnr, "StartTime", "2s")
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189 ec.set (ccnr, "StopTime", STOP_TIME)
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190 ec.register_connection(ccnr, host)
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192 def add_dce_ccncat(ec, nid):
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193 # Retrieve annotation from netgraph
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194 host = ec.netgraph.node_annotation(nid, "host")
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196 # Add a ccncat application to the dce host
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197 ccncat = ec.register_resource("linux::ns3::dce::CCNCat")
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198 ec.set (ccncat, "contentName", content_name)
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199 ec.set (ccncat, "stackSize", 1<<20)
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200 ec.set (ccncat, "StartTime", "8s")
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201 ec.set (ccncat, "StopTime", STOP_TIME)
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202 ec.register_connection(ccncat, host)
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204 def add_dce_fib_entry(ec, nid1, nid2):
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205 # Retrieve annotations from netgraph
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206 host1 = ec.netgraph.node_annotation(nid1, "host")
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207 net = ec.netgraph.edge_net_annotation(nid1, nid2)
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210 # Add FIB entry between peer hosts
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211 ccndc = ec.register_resource("linux::ns3::dce::FIBEntry")
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212 ec.set (ccndc, "protocol", "udp")
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213 ec.set (ccndc, "uri", "ccnx:/")
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214 ec.set (ccndc, "host", ip2)
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215 ec.set (ccndc, "stackSize", 1<<20)
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216 ec.set (ccndc, "StartTime", "2s")
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217 ec.set (ccndc, "StopTime", STOP_TIME)
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218 ec.register_connection(ccndc, host1)
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220 def add_dce_net_iface(ec, nid1, nid2):
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221 # Retrieve annotations from netgraph
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222 host = ec.netgraph.node_annotation(nid1, "host")
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223 net = ec.netgraph.edge_net_annotation(nid1, nid2)
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225 prefix = net["prefix"]
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227 dev = ec.register_resource("ns3::PointToPointNetDevice")
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228 ec.set(dev,"DataRate", "5Mbps")
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229 ec.set(dev, "ip", ip1)
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230 ec.set(dev, "prefix", prefix)
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231 ec.register_connection(host, dev)
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233 queue = ec.register_resource("ns3::DropTailQueue")
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234 ec.register_connection(dev, queue)
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238 def add_pl_host(ec, nid):
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239 hostname = NODES[nid]
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241 # Add a planetlab host to the experiment description
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242 host = ec.register_resource("planetlab::Node")
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243 ec.set(host, "hostname", hostname)
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244 ec.set(host, "username", pl_slice)
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245 ec.set(host, "identity", pl_ssh_key)
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246 ec.set(host, "cleanExperiment", True)
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247 ec.set(host, "cleanProcesses", True)
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249 # Annotate the graph
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250 ec.netgraph.annotate_node(nid, "hostname", hostname)
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251 ec.netgraph.annotate_node(nid, "host", host)
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253 # Annotate the graph node with an ip address
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254 ip = socket.gethostbyname(hostname)
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255 ec.netgraph.annotate_node_ip(nid, ip)
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257 def add_pl_ccnd(ec, nid):
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258 # Retrieve annotation from netgraph
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259 host = ec.netgraph.node_annotation(nid, "host")
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261 # Add a CCN daemon to the planetlab node
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262 ccnd = ec.register_resource("linux::CCND")
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263 ec.set(ccnd, "debug", 7)
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264 ec.register_connection(ccnd, host)
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266 # Collector to retrieve ccnd log
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267 collector = add_collector(ec, "stderr", str(nid), "log")
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268 ec.register_connection(collector, ccnd)
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270 # Annotate the graph
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271 ec.netgraph.annotate_node(nid, "ccnd", ccnd)
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273 def add_pl_ccnr(ec, nid):
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274 # Retrieve annotation from netgraph
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275 ccnd = ec.netgraph.node_annotation(nid, "ccnd")
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277 # Add a CCN content repository to the planetlab node
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278 ccnr = ec.register_resource("linux::CCNR")
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280 ec.set(ccnr, "repoFile1", repofile)
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281 ec.register_connection(ccnr, ccnd)
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283 def add_pl_ccncat(ec, nid):
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284 # Retrieve annotation from netgraph
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285 ccnd = ec.netgraph.node_annotation(nid, "ccnd")
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287 # Add a CCN cat application to the planetlab node
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288 ccncat = ec.register_resource("linux::CCNCat")
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289 ec.set(ccncat, "contentName", content_name)
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290 ec.register_connection(ccncat, ccnd)
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292 def add_pl_fib_entry(ec, nid1, nid2):
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293 # Retrieve annotations from netgraph
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294 ccnd1 = ec.netgraph.node_annotation(nid1, "ccnd")
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295 hostname2 = ec.netgraph.node_annotation(nid2, "hostname")
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297 # Add a FIB entry between one planetlab node and its peer
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298 entry = ec.register_resource("linux::FIBEntry")
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299 ec.set(entry, "host", hostname2)
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300 ec.register_connection(entry, ccnd1)
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302 # Collector to retrieve peering ping output (to measure neighbors delay)
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303 ec.enable_trace(entry, "ping")
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304 collector = add_collector(ec, "ping", str(nid1))
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305 ec.register_connection(collector, entry)
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309 def add_node(ec, nid):
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310 ### Add CCN nodes (ec.netgraph holds the topology graph)
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311 add_dce_host(ec, nid)
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312 add_dce_ccnd(ec, nid)
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314 if nid == ec.netgraph.targets()[0]:
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315 add_dce_ccnr(ec, nid)
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317 if nid == ec.netgraph.sources()[0]:
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318 add_dce_ccncat(ec, nid)
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320 def add_edge(ec, nid1, nid2):
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321 #### Add connections between CCN nodes
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322 add_pl_fib_entry(ec, nid1, nid2)
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323 add_pl_fib_entry(ec, nid2, nid1)
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325 def add_node(ec, nid):
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326 ### Add CCN nodes (ec.netgraph holds the topology graph)
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327 add_pl_host(ec, nid)
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328 add_pl_ccnd(ec, nid)
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330 if nid == ec.netgraph.targets()[0]:
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331 add_pl_ccnr(ec, nid)
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333 if nid == ec.netgraph.sources()[0]:
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334 add_pl_ccncat(ec, nid)
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336 def wait_guids(ec):
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337 return ec.filter_resources("linux::CCNCat")
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339 if __name__ == '__main__':
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343 # topology translation to NEPI model
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344 ec = ExperimentController("pl_4n_linear",
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345 topo_type = TopologyType.LINEAR,
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349 add_node_callback = add_node,
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350 add_edge_callback = add_edge)
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352 #### Run experiment until metric convergence
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353 rnr = ExperimentRunner()
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357 compute_metric_callback = avg_interest_rtt,
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358 evaluate_convergence_callback = normal_law,
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359 wait_guids = wait_guids(ec))
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361 ### post processing
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362 post_process(ec, runs)
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