def execute(options):
"Create a network based on template_file"
template_file = options.templateFile
install_dir='/usr/local/etc/mini-ndn/'
if template_file == '':
template_file = install_dir + 'default-topology.conf'
if options.testbed:
template_file = install_dir + 'minindn.testbed.conf'
if os.path.exists(template_file) == False:
info('No template file given and default template file cannot be found. Exiting...\n')
quit()
# Update nfd.conf file used by Mini-NDN to match the currently installed version of NFD
nfdConfFile = "%s/nfd.conf" % install_dir
os.system("sudo cp /usr/local/etc/ndn/nfd.conf.sample %s" % nfdConfFile)
os.system("sudo sed -i \'s|default_level [A-Z]*$|default_level $LOG_LEVEL|g\' %s" % nfdConfFile)
topo = NdnTopo(template_file, options.workDir)
t = datetime.datetime.now()
if topo.isTCLink == True and topo.isLimited == True:
net = Mininet(topo,host=CpuLimitedNdnHost,link=TCLink)
elif topo.isTCLink == True and topo.isLimited == False:
net = Mininet(topo,host=NdnHost,link=TCLink)
elif topo.isTCLink == False and topo.isLimited == True:
net = Mininet(topo,host=CpuLimitedNdnHost)
else:
net = Mininet(topo,host=NdnHost,controller=RemoteController)
# [PZ] probable alternative is to have net=Mininet(...,build=False) and add something like
# net.addController(name='c0', controller=RemoteController, ip='127.0.0.1')
# ..and then have net.build()
t2 = datetime.datetime.now()
delta = t2 - t
info('Setup time: ' + str(delta.seconds) + '\n')
net.start()
# Giving proper IPs to intf so neighbor nodes can communicate
# This is one way of giving connectivity, another way could be
# to insert a switch between each pair of neighbors
ndnNetBase = "1.0.0.0"
sdnNetBase = "2.0.0.0"
sdnHostCount = 0
interfaces = []
for host in net.hosts:
for intf in host.intfList():
link = intf.link
node1, node2 = link.intf1.node, link.intf2.node
# if node1 in net.switches or node2 in net.switches:
# print "%s or %s is a switch" % (node1.name, node2.name)
# continue
if node1 in net.hosts and node2 in net.switches:
sdnHostCount += 1
if sdnHostCount > 254:
print "too many sdn hosts"
exit()
node1.setIP(ipStr(ipParse(sdnNetBase) + sdnHostCount) + '/24', intf=link.intf1)
continue
if node2 in net.hosts and node1 in net.switches:
sdnHostCount += 1
if sdnHostCount > 254:
print "too many sdn hosts"
exit()
node2.setIP(ipStr(ipParse(sdnNetBase) + sdnHostCount) + '/24', intf=link.intf2)
continue
if link.intf1 not in interfaces and link.intf2 not in interfaces:
interfaces.append(link.intf1)
interfaces.append(link.intf2)
node1.setIP(ipStr(ipParse(ndnNetBase) + 1) + '/30', intf=link.intf1)
node2.setIP(ipStr(ipParse(ndnNetBase) + 2) + '/30', intf=link.intf2)
ndnNetBase = ipStr(ipParse(ndnNetBase) + 4)
nodes = "" # Used later to check prefix name in checkFIB
# NLSR initialization
for host in net.hosts:
nodes += str(host.name) + ","
conf = next(x for x in hosts_conf if x.name == host.name)
host.nlsrParameters = conf.nlsrParameters
if options.nFaces is not None:
host.nlsrParameters["max-faces-per-prefix"] = options.nFaces
if options.hr is True:
host.nlsrParameters["hyperbolic-state"] = "on"
# Generate NLSR configuration file
configGenerator = NlsrConfigGenerator(host)
configGenerator.createConfigFile()
# Start NLSR
host.nlsr = Nlsr(host)
host.nlsr.start()
nodes = nodes[0:-1]
for host in net.hosts:
if 'app' in host.params:
if host.params['app'] != '':
app = host.params['app']
print "Starting " + app + " on node " + host.name
print(host.cmd(app))
# Load experiment
experimentName = options.experimentName
if experimentName is not None:
print "Loading experiment: %s" % experimentName
experimentArgs = {
"net": net,
"nodes": nodes,
"ctime": options.ctime,
"nPings": options.nPings,
"strategy": Nfd.STRATEGY_BEST_ROUTE_V3
}
experiment = ExperimentManager.create(experimentName, experimentArgs)
if experiment is not None:
experiment.start()
else:
print "ERROR: Experiment '%s' does not exist" % experimentName
return
if options.isCliEnabled is True:
CLI(net)
net.stop()
