e0f41e21b302540e190249eaee125f8893b70aa8
2 Distributed Cloud Emulator (dcemulator)
3 (c) 2015 by Manuel Peuster <manuel.peuster@upb.de>
7 from mininet
.net
import Mininet
8 from mininet
.node
import Controller
, OVSKernelSwitch
, Switch
9 from mininet
.cli
import CLI
10 from mininet
.log
import setLogLevel
, info
11 from mininet
.link
import TCLink
, Link
13 from node
import Datacenter
16 class DCNetwork(object):
18 Wraps the original Mininet class and provides
19 methods to add data centers, switches, etc.
21 This class is used by topology definition scripts.
29 # create a Mininet/Dockernet network
30 setLogLevel('info') # set Mininet loglevel
31 self
.mnet
= Mininet(controller
=Controller
, switch
=OVSKernelSwitch
)
32 self
.mnet
.addController('c0')
34 def addDatacenter(self
, name
):
36 Create and add a logical cloud data center to the network.
39 raise Exception("Data center name already exists: %s" % name
)
41 dc
.net
= self
# set reference to network
43 dc
.create() # finally create the data center in our Mininet instance
44 logging
.info("added data center: %s" % name
)
47 def addSwitch(self
, name
):
49 We can also add additional SDN switches between data centers.
51 s
= self
.mnet
.addSwitch(name
)
52 self
.switches
[name
] = s
53 logging
.info("added switch: %s" % name
)
56 def addLink(self
, node1
, node2
):
57 assert node1
is not None
58 assert node2
is not None
59 # ensure type of node1
60 if isinstance( node1
, basestring
):
62 node1
= self
.dcs
[node1
].switch
63 elif node1
in self
.switches
:
64 node1
= self
.switches
[node1
]
65 if isinstance( node1
, Datacenter
):
67 # ensure type of node2
68 if isinstance( node2
, basestring
):
70 node2
= self
.dcs
[node2
].switch
71 elif node2
in self
.switches
:
72 node2
= self
.switches
[node2
]
73 if isinstance( node2
, Datacenter
):
75 # create link if everything is correct
76 if (node1
is not None and isinstance(node1
, OVSKernelSwitch
)
77 and node2
is not None and isinstance(node2
, OVSKernelSwitch
)):
78 self
.mnet
.addLink(node1
, node2
) # TODO we need TCLinks with user defined performance here
81 "one of the given nodes is not a Mininet switch or None")
85 for dc
in self
.dcs
.itervalues():