src/emuvim/examples/monitoring_demo_topology.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 import logging
  29 from mininet.log import setLogLevel
  30 from emuvim.dcemulator.net import DCNetwork
  31 from emuvim.api.zerorpc.compute import ZeroRpcApiEndpoint
  32 from emuvim.api.zerorpc.network import ZeroRpcApiEndpointDCNetwork
  33
  34 logging.basicConfig(level=logging.INFO)
  35
  36
  37 def create_topology1():
  38     """
  39     1. Create a data center network object (DCNetwork) with monitoring enabled
  40     """
  41     net = DCNetwork(monitor=True, enable_learning=False)
  42
  43     """
  44     1b. Add endpoint APIs for the whole DCNetwork,
  45         to access and control the networking from outside.
  46         e.g., to setup forwarding paths between compute
  47         instances aka. VNFs (represented by Docker containers), passing through
  48         different switches and datacenters of the emulated topology
  49     """
  50     mon_api = ZeroRpcApiEndpointDCNetwork("0.0.0.0", 5151)
  51     mon_api.connectDCNetwork(net)
  52     mon_api.start()
  53
  54     """
  55     2. Add (logical) data centers to the topology
  56        (each data center is one "bigswitch" in our simplified
  57         first prototype)
  58     """
  59     dc1 = net.addDatacenter("datacenter1")
  60     dc2 = net.addDatacenter("datacenter2")
  61     #dc3 = net.addDatacenter("long_data_center_name3")
  62     #dc4 = net.addDatacenter(
  63     #    "datacenter4",
  64     #    metadata={"mydata": "we can also add arbitrary metadata to each DC"})
  65
  66     """
  67     3. You can add additional SDN switches for data center
  68        interconnections to the network.
  69     """
  70     s1 = net.addSwitch("s1")
  71
  72     """
  73     4. Add links between your data centers and additional switches
  74        to define you topology.
  75        These links can use Mininet's features to limit bw, add delay or jitter.
  76     """
  77     #net.addLink(dc1, dc2, delay="10ms")
  78     #net.addLink(dc1, dc2)
  79     net.addLink(dc1, s1)
  80     net.addLink(s1, dc2)
  81     #net.addLink("datacenter1", s1, delay="20ms")
  82     #net.addLink(s1, dc3)
  83     #net.addLink(s1, "datacenter4")
  84
  85
  86     """
  87     5. We want to access and control our data centers from the outside,
  88        e.g., we want to connect an orchestrator to start/stop compute
  89        resources aka. VNFs (represented by Docker containers in the emulated)
  90
  91        So we need to instantiate API endpoints (e.g. a zerorpc or REST
  92        interface). Depending on the endpoint implementations, we can connect
  93        one or more data centers to it, which can then be controlled through
  94        this API, e.g., start/stop/list compute instances.
  95     """
  96     # create a new instance of a endpoint implementation
  97     zapi1 = ZeroRpcApiEndpoint("0.0.0.0", 4242)
  98     # connect data centers to this endpoint
  99     zapi1.connectDatacenter(dc1)
 100     zapi1.connectDatacenter(dc2)
 101     #zapi1.connectDatacenter(dc3)
 102     #zapi1.connectDatacenter(dc4)
 103     # run API endpoint server (in another thread, don't block)
 104     zapi1.start()
 105
 106     """
 107     5.1. For our example, we create a second endpoint to illustrate that
 108          this is supported by our design. This feature allows us to have
 109          one API endpoint for each data center. This makes the emulation
 110          environment more realistic because you can easily create one
 111          OpenStack-like REST API endpoint for *each* data center.
 112          This will look like a real-world multi PoP/data center deployment
 113          from the perspective of an orchestrator.
 114     """
 115     #zapi2 = ZeroRpcApiEndpoint("0.0.0.0", 4343)
 116     #zapi2.connectDatacenter(dc3)
 117     #zapi2.connectDatacenter(dc4)
 118     #zapi2.start()
 119
 120     """
 121     6. Finally we are done and can start our network (the emulator).
 122        We can also enter the Mininet CLI to interactively interact
 123        with our compute resources (just like in default Mininet).
 124        But we can also implement fully automated experiments that
 125        can be executed again and again.
 126     """
 127     net.start()
 128     net.CLI()
 129     # when the user types exit in the CLI, we stop the emulator
 130     net.stop()
 131
 132
 133 def main():
 134     setLogLevel('info')  # set Mininet loglevel
 135     create_topology1()
 136
 137
 138 if __name__ == '__main__':
 139     main()