#
# 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 .
#
# Author: Alina Quereilhac
from nepi.execution.resource import clsinit_copy, ResourceState
from nepi.resources.ns3.ns3base import NS3Base
@clsinit_copy
class NS3BaseApplication(NS3Base):
_rtype = "abstract::ns3::Application"
def __init__(self, ec, guid):
super(NS3BaseApplication, self).__init__(ec, guid)
self._node = None
@property
def node(self):
if not self._node:
from nepi.resources.ns3.ns3node import NS3BaseNode
nodes = self.get_connected(NS3BaseNode.get_rtype())
if not nodes:
msg = "Application not connected to node"
self.error(msg)
raise RuntimeError(msg)
self._node = nodes[0]
return self._node
@property
def _rms_to_wait(self):
rms = set()
rms.add(self.node)
return rms
def _connect_object(self):
node = self.node
if node.uuid not in self.connected:
self.simulation.invoke(node.uuid, "AddApplication", self.uuid)
self._connected.add(node.uuid)
def do_stop(self):
if self.state == ResourceState.STARTED:
# No need to do anything, simulation.Destroy() will stop every object
self.info("Stopping command '%s'" % command)
self.simulation.invoke(self.uuid, "Stop")
self.set_stopped()
def do_start(self):
if self.simulation.state < ResourceState.STARTED:
self.debug("---- RESCHEDULING START ----" )
self.ec.schedule(self.reschedule_delay, self.start)
else:
super(NS3BaseApplication, self).do_start()
self._start_time = self.simulation.start_time
@property
def state(self):
if self._state == ResourceState.STARTED:
try:
is_running = self.simulation.invoke(self.uuid, "isAppRunning")
if not is_running:
self.set_stopped()
except:
msg = "Application failed. Can not retrieve state"
out = ""
import traceback
err = traceback.format_exc()
self.error(msg, out, err)
self.do_fail()
return self._state