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featureres.py
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featureres.py
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#!/usr/bin/python3
#
# Copyright (C) 2019 Trinity College of Dublin, the University of Dublin.
# Copyright (c) 2019 Li Jian
# Author: Li Jian <lij12@tcd.ie>
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
'''This module is used to send FeatureRes Data.'''
import sys
import time
import argparse
import traceback
from pyndn import Name
from pyndn import Face
from pyndn.security import KeyChain
from oscommand import OSCommand
from ndnflowtable import NdnFlowTable
from ofmsg import OFMSG
from featurereq import FeatureReq
class FeatureRes(object):
def __init__(self):
self.keyChain = KeyChain()
self.isDone = False
self.nodeid = OSCommand.getnodeid()
self.face = Face()
self.featurereq = FeatureReq()
def run(self):
NodePrefixString = '/ndn/{}-site/{}/ofndn'.format(self.nodeid, self.nodeid)
NodePrefix = Name(NodePrefixString)
self.face.setCommandSigningInfo(self.keyChain, \
self.keyChain.getDefaultCertificateName())
# self.face.registerPrefix(NodePrefix, self.onInterest, self.onRegisterFailed) #run prefix
self.face.registerPrefix(NodePrefix, self.onInterest_Mian, self.onRegisterFailed) # run prefix
# filters:
feature_msg_prefix = Name('/ndn/{}-site/{}/ofndn/feature'.format(self.nodeid, self.nodeid))
self.face.setInterestFilter(feature_msg_prefix, self.onInterest_Feature) # for FeatureReq
packetout_msg_prefix = Name('/ndn/{}-site/{}/ofndn/--/n1.0/13/0/0'.format(self.nodeid, self.nodeid))
self.face.setInterestFilter(packetout_msg_prefix, self.onInterest_PacketOut) # for PacketOut msg
facemod_msg_prefix = Name('/ndn/{}-site/{}/ofndn/--/n1.0/16/0/0'.format(self.nodeid, self.nodeid))
self.face.setInterestFilter(facemod_msg_prefix, self.onInterest_FaceMod) # for FaceMod msg
print(NodePrefix.toUri())
# # Run the event loop forever. Use a short sleep to
# # prevent the Producer from using 100% of the CPU.
# while not self.isDone:
# self.face.processEvents()
# time.sleep(0.01)
countnumber = 0
while countnumber < 200000000:
self.face.processEvents()
time.sleep(0.01)
countnumber += 1
# print("10s feature response listening stop")
def onInterest_PacketOut(self, mainPrefix, interest, transport, registeredPrefixId):
print("--------Received <<<PacketOut>>> interest ----------")
PacketOut_suffix = NdnFlowTable.parse_PacketOut_Interest(interest)
NdnFlowTable.derectly_updatendnflowtable(PacketOut_suffix,self.nodeid)
print("--------Updated the NdnFlowTable")
self.isDone = True #
def onInterest_FaceMod(self, mainPrefix, interest, transport, registeredPrefixId):
print("--------Received <<<FaceMod>>> interest Msg" )
FaceMod_suffix_list = NdnFlowTable.parse_FaceMod_Interest(interest)
# FaceMod_suffix_list pattern:[faceid, action]
print(OSCommand.facemod(FaceMod_suffix_list)) # modify the face and print the command output
self.isDone = True #
def onInterest_Feature(self, mainPrefix, interest, transport, registeredPrefixId):
print("++++++++ Received <<<FeatureReq>>> interest ++++++++ \n")
feature_face = OSCommand.getface()
feature_FIB = OSCommand.getFIB()
nodeid = bytes(self.nodeid,'utf-8')
feature_data =nodeid + b'----' + feature_face + b'----' + feature_FIB
data = OFMSG().create_feature_res_data(interest,feature_data)
transport.send(data.wireEncode().toBuffer())
print("++++++++ Sent <<<FeatureRes>>> Data ++++++++ \n")
self.isDone = True #
def onInterest_Mian(self, mainPrefix, interest, transport, registeredPrefixId):
pass
#print("--------received Main interest:" + interest.getName().toUri())
def onRegisterFailed(self, ControllerPrefix):
print("Register failed for prefix", ControllerPrefix.toUri())
self.isDone = True