1 # Copyright (c) 2015 SONATA-NFV and Paderborn University
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
16 # Neither the name of the SONATA-NFV, Paderborn University
17 # nor the names of its contributors may be used to endorse or promote
18 # products derived from this software without specific prior written
21 # This work has been performed in the framework of the SONATA project,
22 # funded by the European Commission under Grant number 671517 through
23 # the Horizon 2020 and 5G-PPP programmes. The authors would like to
24 # acknowledge the contributions of their colleagues of the SONATA
25 # partner consortium (www.sonata-nfv.eu).
30 from emuvim
.dcemulator
.net
import DCNetwork
31 from mininet
.clean
import cleanup
32 from mininet
.node
import Controller
35 class SimpleTestTopology(unittest
.TestCase
):
37 Helper class to do basic test setups.
38 s1 -- s2 -- s3 -- ... -- sN
41 def __init__(self
, *args
, **kwargs
):
43 self
.s
= [] # list of switches
44 self
.h
= [] # list of hosts
45 self
.d
= [] # list of docker containers
46 self
.dc
= [] # list of data centers
47 self
.docker_cli
= None
48 super(SimpleTestTopology
, self
).__init
__(*args
, **kwargs
)
52 nswitches
=0, ndatacenter
=0, nhosts
=0, ndockers
=0,
53 autolinkswitches
=False, controller
=Controller
, **kwargs
):
55 Creates a Mininet instance and automatically adds some
58 Attention, we should always use Mininet's default controller
59 for our tests. Only use other controllers if you want to test
60 specific controller functionality.
62 self
.net
= DCNetwork(controller
=controller
, **kwargs
)
65 # start from s1 because ovs does not like to have dpid = 0
66 # and switch name-number is being used by mininet to set the dpid
67 for i
in range(1, nswitches
+ 1):
68 self
.s
.append(self
.net
.addSwitch('s%d' % i
))
69 # if specified, chain all switches
71 for i
in range(0, len(self
.s
) - 1):
72 self
.net
.addLink(self
.s
[i
], self
.s
[i
+ 1])
73 # add some data centers
74 for i
in range(0, ndatacenter
):
76 self
.net
.addDatacenter(
78 metadata
={"unittest_dc": i
}))
80 for i
in range(0, nhosts
):
81 self
.h
.append(self
.net
.addHost('h%d' % i
))
83 for i
in range(0, ndockers
):
84 self
.d
.append(self
.net
.addDocker('d%d' %
85 i
, dimage
="ubuntu:trusty"))
93 def getDockerCli(self
):
95 Helper to interact with local docker instance.
97 if self
.docker_cli
is None:
98 self
.docker_cli
= docker
.APIClient(
99 base_url
='unix://var/run/docker.sock')
100 return self
.docker_cli
102 def getContainernetContainers(self
):
104 List the containers managed by containernet
106 return self
.getDockerCli().containers(
107 filters
={"label": "com.containernet"})
116 # make sure that all pending docker containers are killed
117 with
open(os
.devnull
, 'w') as devnull
:
119 "sudo docker rm -f $(sudo docker ps --filter 'label=com.containernet' -a -q)",