#
# NEPI, a framework to manage network experiments
# Copyright (C) 2013 INRIA
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation;
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Author: Alina Quereilhac <alina.quereilhac@inria.fr>
from nepi.execution.attribute import Attribute, Flags, Types
from nepi.execution.resource import clsinit_copy, ResourceState
from nepi.resources.linux.application import LinuxApplication
from nepi.resources.planetlab.node import PlanetlabNode
from nepi.resources.planetlab.tap import PlanetlabTap
from nepi.util.timefuncs import tnow, tdiffsec
import os
import time
PYTHON_VSYS_VERSION = "1.0"
@clsinit_copy
[docs]class PlanetlabVroute(LinuxApplication):
_rtype = "planetlab::Vroute"
_help = "Creates a Vroute on a PlanetLab host"
_platform = "planetlab"
@classmethod
def _register_attributes(cls):
action = Attribute("action", "Either add or del",
allowed = ["add", "del"],
default = "add",
flags = Flags.Design)
prefix = Attribute("prefix", "IPv4 Prefix",
flags = Flags.Design)
nexthop = Attribute("nexthop", "IPv4 Address of the next hop",
flags = Flags.Design)
network = Attribute("network", "IPv4 Network Address",
flags = Flags.Design)
cls._register_attribute(action)
cls._register_attribute(prefix)
cls._register_attribute(nexthop)
cls._register_attribute(network)
def __init__(self, ec, guid):
super(PlanetlabVroute, self).__init__(ec, guid)
self._home = "vroute-%s" % self.guid
@property
[docs] def tap(self):
tap = self.get_connected(PlanetlabTap.get_rtype())
if tap: return tap[0]
return None
@property
[docs] def node(self):
node = self.tap.get_connected(PlanetlabNode.get_rtype())
if node: return node[0]
return None
[docs] def upload_sources(self):
# upload vif-creation python script
pl_vroute = os.path.join(os.path.dirname(__file__),
"scripts",
"pl-vroute.py")
self.node.upload(pl_vroute,
os.path.join(self.node.src_dir, "pl-vroute.py"),
overwrite = False)
# upload stop.sh script
stop_command = self.replace_paths(self._stop_command)
self.node.upload(stop_command,
os.path.join(self.app_home, "stop.sh"),
text = True,
# Overwrite file every time.
# The stop.sh has the path to the socket, wich should change
# on every experiment run.
overwrite = True)
[docs] def upload_start_command(self):
# Overwrite file every time.
# The stop.sh has the path to the socket, wich should change
# on every experiment run.
command = self.get("command")
shfile = os.path.join(self.app_home, "start.sh")
self.node.run_and_wait(command, self.run_home,
shfile=shfile,
overwrite=True)
[docs] def do_deploy(self):
if not self.tap or self.tap.state < ResourceState.PROVISIONED:
self.ec.schedule(self.reschedule_delay, self.deploy)
else:
if not self.get("command"):
self.set("command", self._start_command)
self.do_discover()
self.do_provision()
self.debug("----- READY ---- ")
self.set_ready()
[docs] def do_start(self):
if self.state == ResourceState.READY:
command = self.get("command")
self.info("Starting command '%s'" % command)
# Vroute started during deployment
self.set_started()
else:
msg = " Failed to execute command '%s'" % command
self.error(msg, out, err)
raise RuntimeError, msg
[docs] def do_stop(self):
command = self.get('command') or ''
if self.state == ResourceState.STARTED:
self.info("Stopping command '%s'" % self._stop_command)
command = "bash %s" % os.path.join(self.app_home, "stop.sh")
(out, err), proc = self.execute_command(command,
blocking = True)
self.set_stopped()
[docs] def do_release(self):
# Node needs to wait until all associated RMs are released
# to be released
if not self.get("tearDown"):
self.set("tearDown", self._tear_down_command())
super(PlanetlabVroute, self).do_release()
def _tear_down_command(self):
if self.get("action") == "del":
return
return self._stop_command
@property
def _start_command(self):
command = ["sudo -S python ${SRC}/pl-vroute.py"]
command.append("-a %s" % self.get("action"))
command.append("-n %s" % self.get("network"))
command.append("-p %s" % self.get("prefix"))
command.append("-g %s" % self.tap.get("pointopoint"))
command.append("-f %s" % self.tap.get("deviceName"))
command = " ".join(command)
command = self.replace_paths(command)
return command
@property
def _stop_command(self):
command = ["sudo -S python ${SRC}/pl-vroute.py"]
command.append("-a %s" % "del")
command.append("-n %s" % self.get("network"))
command.append("-p %s" % self.get("prefix"))
command.append("-g %s" % self.get("nexthop"))
command.append("-f %s" % self.tap.get("deviceName"))
command = " ".join(command)
command = self.replace_paths(command)
return command
[docs] def valid_connection(self, guid):
# TODO: Validate!
return True