+++ /dev/null
-"""
-Distributed Cloud Emulator (dcemulator)
-(c) 2015 by Manuel Peuster <manuel.peuster@upb.de>
-"""
-import logging
-
-from mininet.net import Mininet
-from mininet.node import Controller, OVSKernelSwitch, Switch
-from mininet.cli import CLI
-from mininet.log import setLogLevel, info
-from mininet.link import TCLink, Link
-
-from node import Datacenter
-
-
-class DCNetwork(object):
-
- def __init__(self):
- self.dcs = {}
- self.switches = {}
- self.links = []
-
- # create a Mininet/Dockernet network
- setLogLevel('info') # set Mininet loglevel
- self.mnet = Mininet(controller=Controller, switch=OVSKernelSwitch)
- self.mnet.addController('c0')
-
- def addDatacenter(self, name):
- """
- Create and add a logical cloud data center to the network.
- """
- if name in self.dcs:
- raise Exception("Data center name already exists: %s" % name)
- dc = Datacenter(name)
- dc.net = self # set reference to network
- self.dcs[name] = dc
- dc.create() # finally create the data center in our Mininet instance
- logging.info("added data center: %s" % name)
- return dc
-
- def addSwitch(self, name):
- """
- We can also add additional SDN switches between data centers.
- """
- s = self.mnet.addSwitch(name)
- self.switches[name] = s
- logging.info("added switch: %s" % name)
- return s
-
- def addLink(self, node1, node2):
- assert node1 is not None
- assert node2 is not None
- # ensure type of node1
- if isinstance( node1, basestring ):
- if node1 in self.dcs:
- node1 = self.dcs[node1].switch
- elif node1 in self.switches:
- node1 = self.switches[node1]
- if isinstance( node1, Datacenter ):
- node1 = node1.switch
- # ensure type of node2
- if isinstance( node2, basestring ):
- if node2 in self.dcs:
- node2 = self.dcs[node2].switch
- elif node2 in self.switches:
- node2 = self.switches[node2]
- if isinstance( node2, Datacenter ):
- node2 = node2.switch
- # create link if everything is correct
- if (node1 is not None and isinstance(node1, OVSKernelSwitch)
- and node2 is not None and isinstance(node2, OVSKernelSwitch)):
- self.mnet.addLink(node1, node2) # TODO we need TCLinks with user defined performance her
- else:
- raise Exception(
- "one of the given nodes is not a Mininet switch or None")
-
- def start(self):
- # start
- for dc in self.dcs.itervalues():
- dc.start()
- self.mnet.start()
-
- def stop(self):
- self.mnet.stop()
-
- def CLI(self):
- CLI(self.mnet)
-