+#
+# 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
+