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).
27 from gevent
import monkey
28 monkey
.patch_all() # noqa: because otherwise pep complains about code before imports
34 from emuvim
.dcemulator
.net
import DCNetwork
35 from mininet
.clean
import cleanup
36 from mininet
.node
import Controller
39 class SimpleTestTopology(unittest
.TestCase
):
41 Helper class to do basic test setups.
42 s1 -- s2 -- s3 -- ... -- sN
45 def __init__(self
, *args
, **kwargs
):
47 self
.s
= [] # list of switches
48 self
.h
= [] # list of hosts
49 self
.d
= [] # list of docker containers
50 self
.dc
= [] # list of data centers
51 self
.docker_cli
= None
52 super(SimpleTestTopology
, self
).__init
__(*args
, **kwargs
)
56 nswitches
=0, ndatacenter
=0, nhosts
=0, ndockers
=0,
57 autolinkswitches
=False, controller
=Controller
, **kwargs
):
59 Creates a Mininet instance and automatically adds some
62 Attention, we should always use Mininet's default controller
63 for our tests. Only use other controllers if you want to test
64 specific controller functionality.
66 self
.net
= DCNetwork(controller
=controller
, **kwargs
)
69 # start from s1 because ovs does not like to have dpid = 0
70 # and switch name-number is being used by mininet to set the dpid
71 for i
in range(1, nswitches
+ 1):
72 self
.s
.append(self
.net
.addSwitch('s%d' % i
))
73 # if specified, chain all switches
75 for i
in range(0, len(self
.s
) - 1):
76 self
.net
.addLink(self
.s
[i
], self
.s
[i
+ 1])
77 # add some data centers
78 for i
in range(0, ndatacenter
):
80 self
.net
.addDatacenter(
82 metadata
={"unittest_dc": i
}))
84 for i
in range(0, nhosts
):
85 self
.h
.append(self
.net
.addHost('h%d' % i
))
87 for i
in range(0, ndockers
):
88 self
.d
.append(self
.net
.addDocker('d%d' %
89 i
, dimage
="ubuntu:trusty"))
97 def getDockerCli(self
):
99 Helper to interact with local docker instance.
101 if self
.docker_cli
is None:
102 self
.docker_cli
= docker
.APIClient(
103 base_url
='unix://var/run/docker.sock')
104 return self
.docker_cli
106 def getContainernetContainers(self
):
108 List the containers managed by containernet
110 return self
.getDockerCli().containers(
111 filters
={"label": "com.containernet"})
120 # make sure that all pending docker containers are killed
121 with
open(os
.devnull
, 'w') as devnull
:
123 "sudo docker rm -f $(sudo docker ps --filter 'label=com.containernet' -a -q)",