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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 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
logger = log.get_logger(__name__)
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'):
"""
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'.
"""
mod.Experiment.__init__(self, testbed, nodes, git_repo, git_branch,
enrollment_strategy=enrollment_strategy)
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 -DCMAKE_BUILD_TYPE=Debug -DIPCP_FLOW_STATS=True " +
"-DCONNECT_TIMEOUT=60000 " +
"-DREG_TIMEOUT=60000 -DQUERY_TIMEOUT=4000 .. && " +
"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-llc 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):
if isinstance(self.testbed, local.Testbed):
logger.info("Killing IRMd...")
subprocess.check_call('sudo killall -15 irmd'.split())
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