src/emuvim/examples/son-monitor_test_topo.py

   1 """
   2 Copyright (c) 2015 SONATA-NFV
   3 ALL RIGHTS RESERVED.
   4
   5 Licensed under the Apache License, Version 2.0 (the "License");
   6 you may not use this file except in compliance with the License.
   7 You may obtain a copy of the License at
   8
   9     http://www.apache.org/licenses/LICENSE-2.0
  10
  11 Unless required by applicable law or agreed to in writing, software
  12 distributed under the License is distributed on an "AS IS" BASIS,
  13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 See the License for the specific language governing permissions and
  15 limitations under the License.
  16
  17 Neither the name of the SONATA-NFV [, ANY ADDITIONAL AFFILIATION]
  18 nor the names of its contributors may be used to endorse or promote
  19 products derived from this software without specific prior written
  20 permission.
  21
  22 This work has been performed in the framework of the SONATA project,
  23 funded by the European Commission under Grant number 671517 through
  24 the Horizon 2020 and 5G-PPP programmes. The authors would like to
  25 acknowledge the contributions of their colleagues of the SONATA
  26 partner consortium (www.sonata-nfv.eu).
  27 """
  28 """
  29 A simple topology with two PoPs for the y1 demo story board.
  30
  31         (dc1) <<-->> s1 <<-->> (dc2)
  32 """
  33
  34 import logging
  35 from mininet.log import setLogLevel
  36 from emuvim.dcemulator.net import DCNetwork
  37 from emuvim.api.rest.rest_api_endpoint import RestApiEndpoint
  38 from emuvim.api.sonata import SonataDummyGatekeeperEndpoint
  39 from mininet.node import RemoteController
  40 import signal
  41 import sys
  42 import time
  43
  44 logging.basicConfig(level=logging.INFO)
  45
  46 exit = False
  47
  48 def create_topology1():
  49
  50     global exit
  51
  52     # create topology
  53     net = DCNetwork(controller=RemoteController, monitor=True, enable_learning = False)
  54     dc1 = net.addDatacenter("dc1")
  55     dc2 = net.addDatacenter("dc2")
  56     s1 = net.addSwitch("s1")
  57     net.addLink(dc1, s1, delay="10ms")
  58     net.addLink(dc2, s1, delay="20ms")
  59
  60     # add the command line interface endpoint to each DC (REST API)
  61     rapi1 = RestApiEndpoint("0.0.0.0", 5001)
  62     rapi1.connectDatacenter(dc1)
  63     rapi1.connectDatacenter(dc2)
  64     # connect total network also, needed to do the chaining and monitoring
  65     rapi1.connectDCNetwork(net)
  66     # run API endpoint server (in another thread, don't block)
  67     rapi1.start()
  68
  69     # add the SONATA dummy gatekeeper to each DC
  70     sdkg1 = SonataDummyGatekeeperEndpoint("0.0.0.0", 5000, deploy_sap=True)
  71     sdkg1.connectDatacenter(dc1)
  72     sdkg1.connectDatacenter(dc2)
  73     # run the dummy gatekeeper (in another thread, don't block)
  74     sdkg1.start()
  75
  76     # start the emulation platform
  77     net.start()
  78
  79     #does not work from docker compose (cannot start container in interactive mode)
  80     #cli = net.CLI()
  81     # instead wait here:
  82     logging.info("waiting for SIGTERM or SIGINT signal")
  83     while not exit:
  84         time.sleep(1)
  85     logging.info("got SIG signal")
  86     net.stop()
  87
  88 def exit_gracefully(signum, frame):
  89     """
  90     7. At shutdown, we should receive the unix signal here and shutdown gracefully
  91     """
  92
  93     global exit
  94
  95     logging.info('Signal handler called with signal {0}'.format(signum))
  96     exit = True
  97
  98
  99 def main():
 100     setLogLevel('info')  # set Mininet loglevel
 101     # add the SIGTERM handler (eg. received when son-emu docker container stops)
 102     signal.signal(signal.SIGTERM, exit_gracefully)
 103     # also handle Ctrl-C
 104     signal.signal(signal.SIGINT, exit_gracefully)
 105     # start the topology
 106     create_topology1()
 107
 108
 109 if __name__ == '__main__':
 110     main()