forked from joshuakjacobs/MininetControlCenter
/
simple_monitor.py
101 lines (86 loc) · 4.13 KB
/
simple_monitor.py
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from operator import attrgetter
from ryu.app import simple_switch_13
from ryu.controller import ofp_event
from ryu.controller.handler import MAIN_DISPATCHER, DEAD_DISPATCHER
from ryu.controller.handler import set_ev_cls
from ryu.lib import hub
import json
import os
# Ryu Controller Module - modified by student
class SimpleMonitor(simple_switch_13.SimpleSwitch13):
def __init__(self, *args, **kwargs):
super(SimpleMonitor, self).__init__(*args, **kwargs)
self.datapaths = {}
self.monitor_thread = hub.spawn(self._monitor)
@set_ev_cls(ofp_event.EventOFPStateChange,
[MAIN_DISPATCHER, DEAD_DISPATCHER])
def _state_change_handler(self, ev):
datapath = ev.datapath
if ev.state == MAIN_DISPATCHER:
if not datapath.id in self.datapaths:
self.logger.debug('register datapath: %016x', datapath.id)
self.datapaths[datapath.id] = datapath
elif ev.state == DEAD_DISPATCHER:
if datapath.id in self.datapaths:
self.logger.debug('unregister datapath: %016x', datapath.id)
del self.datapaths[datapath.id]
def _monitor(self):
while True:
for dp in self.datapaths.values():
self._request_stats(dp)
hub.sleep(0.5)
def _request_stats(self, datapath):
self.logger.debug('send stats request: %016x', datapath.id)
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
req = parser.OFPFlowStatsRequest(datapath)
datapath.send_msg(req)
req = parser.OFPPortStatsRequest(datapath, 0, ofproto.OFPP_ANY)
datapath.send_msg(req)
@set_ev_cls(ofp_event.EventOFPFlowStatsReply, MAIN_DISPATCHER)
def _flow_stats_reply_handler(self, ev):
"""Student Modified function
The statistics received are written out to a text file
:param ev:
"""
body = ev.msg.body
i=0
self.logger.info('datapath '
'in-port '
'out-port packets bytes')
self.logger.info('---------------- '
'-------- '
'-------- -------- --------')
for stat in sorted([flow for flow in body if flow.priority == 1],
key=lambda flow: (flow.match['in_port'])):
self.logger.info('%016x %8x %8x %8d %8d',
ev.msg.datapath.id,
stat.match['in_port'], #stat.match['eth_dst'],
stat.instructions[0].actions[0].port,
stat.packet_count, stat.byte_count)
outputfile = 'data.txt' # Student Modification begins here
if os.path.isfile(outputfile): # Deletes file if too large
if os.path.getsize(outputfile) > 1000 * 1024:
os.remove(outputfile)
with open('data.txt', 'a') as outfile: # Writes data to file
i+=1
j=str(i)
outfile.write('\ndpid:')
json.dump(ev.msg.datapath.id, outfile,ensure_ascii=True,indent=3,sort_keys=True)
outfile.write(' port:'+j+' packetcount:')
json.dump(stat.packet_count, outfile,ensure_ascii=True,indent=3,sort_keys=True)
outfile.write('\n')
@set_ev_cls(ofp_event.EventOFPPortStatsReply, MAIN_DISPATCHER)
def _port_stats_reply_handler(self, ev):
body = ev.msg.body
self.logger.info('datapath port '
'rx-pkts rx-bytes rx-error '
'tx-pkts tx-bytes tx-error')
self.logger.info('---------------- -------- '
'-------- -------- -------- '
'-------- -------- --------')
for stat in sorted(body, key=attrgetter('port_no')):
self.logger.info('%016x %8x %8d %8d %8d %8d %8d %8d',
ev.msg.datapath.id, stat.port_no,
stat.rx_packets, stat.rx_bytes, stat.rx_errors,
stat.tx_packets, stat.tx_bytes, stat.tx_errors)