src/emuvim/examples/resource_model_demo_topology.py

   1 """
   2 A simple topology to test resource model support.
   3 """
   4
   5 import logging
   6 import time
   7 import os
   8 from mininet.log import setLogLevel
   9 from mininet.node import Controller
  10 from emuvim.dcemulator.net import DCNetwork
  11 from emuvim.api.zerorpc.compute import ZeroRpcApiEndpoint
  12 from emuvim.api.sonata import SonataDummyGatekeeperEndpoint
  13 from emuvim.dcemulator.resourcemodel.upb.simple import UpbSimpleCloudDcRM
  14
  15 logging.basicConfig(level=logging.INFO)
  16
  17
  18 RESOURCE_LOG_PATH = "resource.log"
  19
  20
  21 def create_topology1():
  22     cleanup()
  23     # create topology
  24     # use a maximum of 50% cpu time for containers added to data centers
  25     net = DCNetwork(dc_emulation_max_cpu=0.5, controller=Controller)
  26     # add some data centers and create a topology
  27     dc1 = net.addDatacenter("dc1", resource_log_path=RESOURCE_LOG_PATH)
  28     dc2 = net.addDatacenter("dc2", resource_log_path=RESOURCE_LOG_PATH)
  29     s1 = net.addSwitch("s1")
  30     net.addLink(dc1, s1, delay="10ms")
  31     net.addLink(dc2, s1, delay="20ms")
  32
  33     # create and assign resource models for each DC
  34     rm1 = UpbSimpleCloudDcRM(max_cu=4, max_mu=1024)
  35     rm2 = UpbSimpleCloudDcRM(max_cu=6)
  36     dc1.assignResourceModel(rm1)
  37     dc2.assignResourceModel(rm2)
  38
  39     # add the command line interface endpoint to each DC
  40     zapi1 = ZeroRpcApiEndpoint("0.0.0.0", 4242)
  41     zapi1.connectDatacenter(dc1)
  42     zapi1.connectDatacenter(dc2)
  43     # run API endpoint server (in another thread, don't block)
  44     zapi1.start()
  45
  46     # start the emulation platform
  47     net.start()
  48     print "Wait a moment and allocate some compute start some compute resources..."
  49     time.sleep(2)
  50     dc1.startCompute("vnf1")
  51     dc1.startCompute("vnf2", flavor_name="tiny")
  52     dc1.startCompute("vnf3", flavor_name="small")
  53     dc2.startCompute("vnf4", flavor_name="medium")
  54     print "... done."
  55     time.sleep(5)
  56     print "Removing instances ..."
  57     dc1.stopCompute("vnf1")
  58     dc2.stopCompute("vnf4")
  59     print "... done"
  60     net.CLI()
  61     net.stop()
  62
  63
  64 def cleanup():
  65     try:
  66         os.remove(RESOURCE_LOG_PATH)
  67     except OSError:
  68         pass
  69
  70
  71 def main():
  72     setLogLevel('info')  # set Mininet loglevel
  73     create_topology1()
  74
  75
  76 if __name__ == '__main__':
  77     main()