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#
# A library to manage ARCFIRE experiments
#
# Copyright (C) 2017-2018 Nextworks S.r.l.
# Copyright (C) 2017-2018 imec
#
# Sander Vrijders <sander.vrijders@ugent.be>
# Dimitri Staessens <dimitri.staessens@ugent.be>
# Vincenzo Maffione <v.maffione@nextworks.it>
# Marco Capitani <m.capitani@nextworks.it>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., http://www.fsf.org/about/contact/.
#
import time
import subprocess
import re
import rumba.ssh_support as ssh
import rumba.model as mod
import rumba.multiprocess as m_processing
import rumba.log as log
import rumba.testbeds.local as local
import rumba.testbeds.dockertb as docker
import rumba.storyboard as sb
logger = log.get_logger(__name__)
class OurServer(sb.Server):
def __init__(self, server):
super(OurServer, self).__init__(
server.ap,
server.arrival_rate,
server.actual_parameter + server.min_duration,
server.options,
server.max_clients,
server.clients,
server.nodes,
server.min_duration,
server.id,
server.as_root,
server.difs
)
def _make_run_cmd(self, node):
o_cmd = super(OurServer, self)._make_run_cmd(node)
# Run and store PID
n_cmd = 'pid=$(%s) && ' % (o_cmd,)
# Build register command
r_cmd = 'irm r n %s ' % (self.id,)
if len(self.difs) == 0:
r_cmd += ' '.join('ipcp %s' % (ipcp.name,) for ipcp in node.ipcps)
else:
for dif in self.difs:
for ipcp in node.ipcps:
if ipcp.dif is dif:
r_cmd += 'ipcp %s' % (ipcp.name,)
r_cmd += ' && '
# Add register command
n_cmd += r_cmd
# Add bind command
n_cmd += 'irm b process $pid name %s && ' % (self.id,)
n_cmd += 'echo $pid' # We need to return the pid for the sb
return n_cmd
class Experiment(mod.Experiment):
"""
Represents an Ouroboros experiment.
"""
def __init__(self,
testbed,
nodes=None,
git_repo='git://ouroboros.ilabt.imec.be/ouroboros',
git_branch='master',
enrollment_strategy='minimal',
dt_strategy='full-mesh'):
"""
Initializes the experiment class.
:param testbed: The testbed to run the experiment on.
:param nodes: The list of nodes.
:param git_repo: The git repository to use for installation.
:param git_branch: The branch of the git repository to use.
:param enrollment_strategy: Can be 'full-mesh', 'minimal' or 'manual'.
:param dt_strategy: For data flows, 'full-mesh', 'minimal' or 'manual'.
"""
mod.Experiment.__init__(
self,
testbed,
nodes,
git_repo,
git_branch,
enrollment_strategy=enrollment_strategy,
dt_strategy=dt_strategy,
server_decorator=OurServer
)
self.r_ipcps = dict()
self.set_startup_command("irmd")
@staticmethod
def make_executor(node, packages, testbed):
def executor(commands):
ssh.aptitude_install(testbed, node, packages)
node.execute_commands(commands, time_out=None, use_proxy=True)
return executor
def prototype_name(self):
return 'ouroboros'
def exec_local_cmd(self, cmd):
try:
logger.info(cmd)
subprocess.check_call(cmd.split(' '))
except subprocess.CalledProcessError as e:
logger.error("Return code was " + str(e.returncode))
raise
def exec_local_cmds(self, cmds):
for cmd in cmds:
self.exec_local_cmd(cmd)
def setup_ouroboros(self):
if isinstance(self.testbed, docker.Testbed):
return
if isinstance(self.testbed, local.Testbed):
subprocess.check_call('sudo -v'.split())
self.irmd = subprocess.Popen(["sudo", "irmd"])
logger.info("Started IRMd, sleeping 2 seconds...")
time.sleep(2)
else:
for node in self.nodes:
node.execute_command("sudo nohup irmd > /dev/null &",
time_out=None)
def install_ouroboros(self):
if isinstance(self.testbed, local.Testbed):
return
packages = ["cmake", "protobuf-c-compiler", "git", "libfuse-dev",
"libgcrypt20-dev", "libssl-dev"]
fs_loc = '/tmp/prototype'
cmds = ["sudo apt-get install libprotobuf-c-dev --yes || true",
"sudo rm -r " + fs_loc + " || true",
"git clone -b " + self.git_branch + " " + self.git_repo + \
" " + fs_loc,
"cd " + fs_loc + " && mkdir build && cd build && " +
"cmake .. && " +
"sudo make install -j$(nproc)"]
names = []
executors = []
args = []
for node in self.nodes:
executor = self.make_executor(node, packages, self.testbed)
names.append(node.name)
executors.append(executor)
args.append(cmds)
m_processing.call_in_parallel(names, args, executors)
def create_ipcps(self):
for node in self.nodes:
cmds = list()
for ipcp in node.ipcps:
cmds2 = list()
if ipcp.dif_bootstrapper:
cmd = "irm i b n " + ipcp.name
else:
cmd = "irm i c n " + ipcp.name
if isinstance(ipcp.dif, mod.ShimEthDIF):
if isinstance(self.testbed, local.Testbed):
cmd += " type local layer " + ipcp.dif.name
else:
cmd += " type eth-dix dev " + ipcp.ifname
cmd += " layer " + ipcp.dif.name
elif isinstance(ipcp.dif, mod.NormalDIF):
cmd += " type normal"
if ipcp.dif_bootstrapper:
pols = ipcp.dif.policy.get_policies()
for comp in pols:
for pol in pols[comp]:
cmd += " " + comp + " " + pol
cmd += " layer " + ipcp.dif.name + " autobind"
cmd2 = "irm r n " + ipcp.name
for dif_b in node.dif_registrations[ipcp.dif]:
for ipcp_b in node.ipcps:
if ipcp_b in dif_b.ipcps:
cmd2 += " ipcp " + ipcp_b.name
cmds2.append(cmd2)
cmd2 = "irm r n " + ipcp.dif.name
for dif_b in node.dif_registrations[ipcp.dif]:
for ipcp_b in node.ipcps:
if ipcp_b in dif_b.ipcps:
cmd2 += " ipcp " + ipcp_b.name
cmds2.append(cmd2)
elif isinstance(ipcp.dif, mod.ShimUDPDIF):
# FIXME: Will fail, since we don't keep IPs yet
cmd += " type udp"
cmd += " layer " + ipcp.dif.name
else:
logger.error("Unsupported IPCP type")
continue
cmds.append(cmd)
# Postpone registrations
self.r_ipcps[ipcp] = cmds2
node.execute_commands(cmds, time_out=None)
def enroll_dif(self, el):
for e in el:
ipcp = e['enrollee']
cmds = list()
# Execute postponed registration
if e['enroller'] in self.r_ipcps:
e['enroller'].node.execute_commands(self.r_ipcps[e['enroller']],
time_out=None)
self.r_ipcps.pop(e['enroller'], None)
cmd = "irm r n " + ipcp.name
for dif_b in e['enrollee'].node.dif_registrations[ipcp.dif]:
for ipcp_b in e['enrollee'].node.ipcps:
if ipcp_b in dif_b.ipcps:
cmd += " ipcp " + ipcp_b.name
cmds.append(cmd)
cmd = "irm i e n " + ipcp.name + " layer " + e['dif'].name + \
" autobind"
cmds.append(cmd)
cmd = "irm r n " + ipcp.dif.name
for dif_b in e['enrollee'].node.dif_registrations[ipcp.dif]:
for ipcp_b in e['enrollee'].node.ipcps:
if ipcp_b in dif_b.ipcps:
cmd += " ipcp " + ipcp_b.name
cmds.append(cmd)
e['enrollee'].node.execute_commands(cmds, time_out=None)
def setup_flows(self, el, comp):
for e in el:
ipcp = e['src']
cmd = "irm i conn n " + ipcp.name + " comp " + \
comp + " dst " + e['dst'].name
ipcp.node.execute_command(cmd, time_out=None)
def _install_prototype(self):
logger.info("Installing Ouroboros...")
self.install_ouroboros()
logger.info("Installed on all nodes...")
def _bootstrap_prototype(self):
for dif in self.dif_ordering:
if isinstance(dif, mod.NormalDIF):
if len(dif.qos_cubes) != 0:
logger.warn('QoS cubes not (yet) supported by '
'the Ouroboros plugin. Will ignore.')
logger.info("Starting IRMd on all nodes...")
self.setup_ouroboros()
logger.info("Creating IPCPs")
self.create_ipcps()
logger.info("Enrolling IPCPs...")
for element, mgmt, dt in zip(self.enrollments,
self.mgmt_flows,
self.dt_flows):
self.enroll_dif(element)
self.setup_flows(mgmt, comp="mgmt")
self.setup_flows(dt, comp="dt")
logger.info("All done, have fun!")
def _terminate_prototype(self, force=False):
cmds = list()
if force is True:
kill = 'killall -9 '
cmds.append(kill + 'irmd')
cmds.append(kill + 'ipcpd-normal')
cmds.append(kill + 'ipcpd-shim-eth-llc')
cmds.append(kill + 'ipcpd-local')
cmds.append('kill -9 $(ps axjf | grep \'sudo irmd\' '
'| grep -v grep | cut -f4 -d " "')
else:
cmds.append('killall -15 irmd')
logger.info("Killing Ouroboros...")
if isinstance(self.testbed, local.Testbed):
cmds = list(map(lambda c: "sudo %s" % (c,), cmds))
for cmd in cmds:
subprocess.check_call(cmd.split())
else:
for node in self.nodes:
node.execute_commands(cmds, time_out=None, as_root=True)
def destroy_dif(self, dif):
for ipcp in dif.ipcps:
ipcp.node.execute_command('irm i d n ' + ipcp.name)
def parse_stats(self, lines, spaces=0):
d = {}
while len(lines):
line = lines[0]
if not re.match(" {%i}.*" % spaces, line):
return d
lines.pop(0)
line = line.strip()
if re.match(".*:.*", line):
head, tail = line.split(":", 1)
if len(tail) == 0:
d[head] = self.parse_stats(lines, spaces+1)
else:
d[head] = tail.strip()
return d
def export_dif_bandwidth(self, filename, dif):
f = open(filename, 'w')
for node in dif.members:
ipcp = node.get_ipcp_by_dif(dif)
# Get IPCP address
if not hasattr(ipcp, 'address'):
path = '/tmp/ouroboros/'+ ipcp.name + '/dt*'
dt_path = node.execute_command('ls -d %s' % path)
dts = dt_path.split('.')
ipcp.address = int(dts[-1])
logger.info('IPCP %s has dt component '
'with address %d' % (ipcp.name, ipcp.address))
for node in dif.members:
ipcp = node.get_ipcp_by_dif(dif)
dt_path = '/tmp/ouroboros/' + ipcp.name + '/dt.' + \
str(ipcp.address) + '/'
# Get flows to other endpoints
fd = node.execute_command('ls --ignore=[01] %s' % dt_path)
fds = fd.split('\n')
for fd in fds:
fd_path = dt_path + fd
fd_file = node.execute_command('cat %s' % fd_path)
d = self.parse_stats(fd_file.splitlines())
remote = d["Endpoint address"]
ipcp2_name = ''
for ipcp2 in dif.ipcps:
if ipcp2.address == int(remote):
ipcp2_name = ipcp2.name
nr = d["Qos cube 0"]["sent (bytes)"]
f.write('%s;%s;%s\n' % (ipcp.name, ipcp2_name, nr))
f.close()
logger.info('Wrote stats to %s', filename)
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