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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 rumba.ssh_support as ssh
import rumba.model as mod
import rumba.log as log
import rumba.multiprocess as m_processing
import time
logger = log.get_logger(__name__)
class Experiment(mod.Experiment):
"""
Represents an rlite experiment.
"""
def __init__(self, testbed, nodes=None,
git_repo='https://gitlab.com/arcfire/rlite',
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,
prototype_logs=['/tmp/uipcp.log'],
enrollment_strategy=enrollment_strategy)
@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 'rlite'
def execute_commands(self, node, cmds):
ssh.execute_commands(self.testbed, node.ssh_config,
cmds, time_out=None)
# Prepend sudo to all commands if the user is not 'root'
def may_sudo(self, cmds):
if self.testbed.username != 'root':
for i in range(len(cmds)):
cmds[i] = "sudo %s" % cmds[i]
def init_nodes(self):
# Load kernel modules and start the uipcps daemon
cmds = ["modprobe rlite",
"modprobe rlite-normal",
"modprobe rlite-shim-eth",
"modprobe rlite-shim-udp4",
"modprobe rlite-shim-loopback",
"rlite-uipcps -v DBG > /tmp/uipcp.log 2>&1 &"]
self.may_sudo(cmds)
for node in self.nodes:
self.execute_commands(node, cmds)
def create_ipcps(self):
for node in self.nodes:
cmds = []
for ipcp in node.ipcps:
# Generate the command to create the IPCP
if isinstance(ipcp.dif, mod.NormalDIF):
ipcp_type = 'normal'
elif isinstance(ipcp.dif, mod.ShimEthDIF):
ipcp_type = 'shim-eth'
elif isinstance(ipcp.dif, mod.ShimUDPDIF):
ipcp_type = 'shim-udp4'
else:
logger.warning(
"unknown type for DIF %s, default to loopback",
ipcp.dif.name)
ipcp_type = 'shim-loopback'
cmds.append("rlite-ctl ipcp-create %s %s %s" %
(ipcp.name, ipcp_type, ipcp.dif.name))
# Generate the command to configure the interface
# name for the shim-eth
if isinstance(ipcp.dif, mod.ShimEthDIF):
cmds.append("rlite-ctl ipcp-config %s netdev %s"
% (ipcp.name, ipcp.ifname))
if isinstance(ipcp.dif, mod.NormalDIF) \
and ipcp.dif_bootstrapper:
cmds.append("rlite-ctl ipcp-enroller-enable %s"
% (ipcp.name))
self.may_sudo(cmds)
self.execute_commands(node, cmds)
def register_ipcps(self):
for node in self.nodes:
cmds = []
for ipcp in node.ipcps:
for lower in ipcp.registrations:
cmds.append("rlite-ctl ipcp-register %s %s"
% (ipcp.name, lower.name))
self.may_sudo(cmds)
self.execute_commands(node, cmds)
def enroll_ipcps(self):
for el in self.enrollments:
for e in el:
d = {'enrollee': e['enrollee'].name,
'dif': e['dif'].name,
'lower_dif': e['lower_dif'].name,
'enroller': e['enroller'].name
}
cmd = "rlite-ctl ipcp-enroll-retry %(enrollee)s %(dif)s "\
"%(lower_dif)s %(enroller)s" % d
cmds = [cmd]
self.may_sudo(cmds)
self.execute_commands(e['enrollee'].node, cmds)
time.sleep(1)
def _install_prototype(self):
logger.info("installing rlite on all nodes")
packages = ["g++", "gcc", "cmake", "linux-headers-$(uname -r)",
"protobuf-compiler", "libprotobuf-dev", "git"]
cmds = ["rm -rf ~/rlite",
"cd ~; git clone -b " + self.git_branch + " " + self.git_repo,
"cd ~/rlite && ./configure && make && sudo make install",
"cd ~/rlite && sudo make depmod"]
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)
logger.info("installation complete")
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 rlite plugin. Will ignore.')
logger.info("setting up")
self.init_nodes()
logger.info("software initialized on all nodes")
self.create_ipcps()
logger.info("IPCPs created on all nodes")
self.register_ipcps()
logger.info("IPCPs registered to their lower DIFs on all nodes")
self.enroll_ipcps()
logger.info("enrollment completed in all DIFs")
def _terminate_prototype(self):
return
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