Source code for nepi.resources.ns3.ns3pipechanel
#
# NEPI, a framework to manage network experiments
# Copyright (C) 2014 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
from nepi.resources.ns3.ns3base import NS3Base
import socket
@clsinit_copy
[docs]class NS3BasePipeChannel(NS3Base):
""" Interconnects two FdNetDevices with a PIPE
"""
_rtype = "ns3::PipeChannel"
def __init__(self, ec, guid):
super(NS3BasePipeChannel, self).__init__(ec, guid)
self._devices = None
@property
[docs] def devices(self):
if not self._devices:
from nepi.resources.ns3.ns3fdnetdevice import NS3BaseFdNetDevice
devices = self.get_connected(NS3BaseFdNetDevice.get_rtype())
if not devices or len(devices) != 2:
msg = "PipeChannel must be connected to exactly to two FdNetDevices"
self.error(msg)
raise RuntimeError, msg
self._devices = devices
return self._devices
@property
[docs] def node(self):
return self.devices[0].node
@property
def _rms_to_wait(self):
rms = set(self.devices)
return rms
def _instantiate_object(self):
""" The pipe channel does not really exists as an ns-3 object.
Do nothing.
"""
pass
def _connect_object(self):
dev1 = self.devices[0]
dev2 = self.devices[1]
if dev1.uuid not in self.connected and dev2.uuid not in self.connected:
(s0, s1) = socket.socketpair(socket.AF_UNIX, socket.SOCK_STREAM, 0)
dev1.send_fd(s0)
self._connected.add(dev1.uuid)
dev1._connected.add(self.uuid)
dev2.send_fd(s1)
self._connected.add(dev2.uuid)
dev2._connected.add(self.uuid)