Repository navigation
Expand file tree
/
Copy pathmn
More file actions
executable file
·415 lines (357 loc) · 16 KB
/
Copy pathmn
File metadata and controls
executable file
·415 lines (357 loc) · 16 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
8000
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
#!/usr/bin/env python
"""
Mininet runner
author: Brandon Heller (brandonh@stanford.edu)
To see options:
sudo mn -h
Example to pull custom params (topo, switch, etc.) from a file:
sudo mn --custom ~/mininet/custom/custom_example.py
"""
from optparse import OptionParser
import os
import sys
import time
# Fix setuptools' evil madness, and open up (more?) security holes
if 'PYTHONPATH' in os.environ:
sys.path = os.environ[ 'PYTHONPATH' ].split( ':' ) + sys.path
from mininet.clean import cleanup
from mininet.cli import CLI
from mininet.log import lg, LEVELS, info, debug, warn, error
from mininet.net import Mininet, MininetWithControlNet, VERSION
from mininet.node import ( Host, CPULimitedHost, Controller, OVSController,
Ryu, NOX, RemoteController, findController,
DefaultController, NullController,
UserSwitch, OVSSwitch, OVSBridge,
IVSSwitch )
from mininet.nodelib import LinuxBridge
from mininet.link import Link, TCLink, TCULink, OVSLink
from mininet.topo import ( SingleSwitchTopo, LinearTopo,
SingleSwitchReversedTopo, MinimalTopo )
from mininet.topolib import TreeTopo, TorusTopo
from mininet.util import customClass, specialClass, splitArgs
from mininet.util import buildTopo
from functools import partial
# Experimental! cluster edition prototype
from mininet.examples.cluster import ( MininetCluster, RemoteHost,
RemoteOVSSwitch, RemoteLink,
SwitchBinPlacer, RandomPlacer,
ClusterCleanup )
from mininet.examples.clustercli import ClusterCLI
PLACEMENT = { 'block': SwitchBinPlacer, 'random': RandomPlacer }
# built in topologies, created only when run
TOPODEF = 'minimal'
TOPOS = { 'minimal': MinimalTopo,
'linear': LinearTopo,
'reversed': SingleSwitchReversedTopo,
'single': SingleSwitchTopo,
'tree': TreeTopo,
'torus': TorusTopo }
SWITCHDEF = 'default'
SWITCHES = { 'user': UserSwitch,
'ovs': OVSSwitch,
'ovsbr' : OVSBridge,
# Keep ovsk for compatibility with 2.0
'ovsk': OVSSwitch,
'ivs': IVSSwitch,
'lxbr': LinuxBridge,
'default': OVSSwitch }
HOSTDEF = 'proc'
HOSTS = { 'proc': Host,
'rt': specialClass( CPULimitedHost, defaults=dict( sched='rt' ) ),
'cfs': specialClass( CPULimitedHost, defaults=dict( sched='cfs' ) ) }
CONTROLLERDEF = 'default'
CONTROLLERS = { 'ref': Controller,
'ovsc': OVSController,
'nox': NOX,
'remote': RemoteController,
'ryu': Ryu,
'default': DefaultController, # Note: overridden below
'none': NullController }
LINKDEF = 'default'
LINKS = { 'default': Link, # Note: overridden below
'tc': TCLink,
'tcu': TCULink,
'ovs': OVSLink }
# Names of tests that are Mininet() methods
TESTNAMES = [ 'cli', 'build', 'pingall', 'pingpair', 'iperf', 'all',
'iperfudp', 'none' ]
# Map to alternate functions and/or spellings of Mininet() methods
TESTS = { 'pingall': 'pingAll',
'pingpair': 'pingPair',
'iperfudp': 'iperfUdp',
'iperfUDP': 'iperfUdp' }
def addDictOption( opts, choicesDict, default, name, **kwargs ):
"""Convenience function to add choices dicts to OptionParser.
opts: OptionParser instance
choicesDict: dictionary of valid choices, must include default
default: default choice key
name: long option name
kwargs: additional arguments to add_option"""
helpStr = ( '|'.join( sorted( choicesDict.keys() ) ) +
'[,param=value...]' )
helpList = [ '%s=%s' % ( k, v.__name__ )
for k, v in choicesDict.items() ]
helpStr += ' ' + ( ' '.join( helpList ) )
params = dict( type='string', default=default, help=helpStr )
params.update( **kwargs )
opts.add_option( '--' + name, **params )
def version( *_args ):
"Print Mininet version and exit"
print "%s" % VERSION
exit()
class MininetRunner( object ):
"Build, setup, and run Mininet."
def __init__( self ):
"Init."
self.options = None
self.args = None # May be used someday for more CLI scripts
self.validate = None
self.parseArgs()
self.setup()
self.begin()
def custom( self, _option, _opt_str, value, _parser ):
"""Parse custom file and add params.
option: option e.g. --custom
opt_str: option string e.g. --custom
value: the value the follows the option
parser: option parser instance"""
files = []
if os.path.isfile( value ):
# Accept any single file (including those with commas)
files.append( value )
else:
# Accept a comma-separated list of filenames
files += value.split(',')
for fileName in files:
customs = {}
if os.path.isfile( fileName ):
execfile( fileName, customs, customs )
for name, val in customs.iteritems():
self.setCustom( name, val )
else:
raise Exception( 'could not find custom file: %s' % fileName )
def setCustom( self, name, value ):
"Set custom parameters for MininetRunner."
if name in ( 'topos', 'switches', 'hosts', 'controllers', 'links'
'testnames', 'tests' ):
# Update dictionaries
param = name.upper()
globals()[ param ].update( value )
elif name == 'validate':
# Add custom validate function
self.validate = value
else:
# Add or modify global variable or class
globals()[ name ] = value
def setNat( self, _option, opt_str, value, parser ):
"Set NAT option(s)"
assert self # satisfy pylint
parser.values.nat = True
# first arg, first char != '-'
if parser.rargs and parser.rargs[ 0 ][ 0 ] != '-':
value = parser.rargs.pop( 0 )
_, args, kwargs = splitArgs( opt_str + ',' + value )
parser.values.nat_args = args
parser.values.nat_kwargs = kwargs
else:
parser.values.nat_args = []
parser.values.nat_kwargs = {}
def parseArgs( self ):
"""Parse command-line args and return options object.
returns: opts parse options dict"""
desc = ( "The %prog utility creates Mininet network from the\n"
"command line. It can create parametrized topologies,\n"
"invoke the Mininet CLI, and run tests." )
usage = ( '%prog [options]\n'
'(type %prog -h for details)' )
opts = OptionParser( description=desc, usage=usage )
addDictOption( opts, SWITCHES, SWITCHDEF, 'switch' )
addDictOption( opts, HOSTS, HOSTDEF, 'host' )
addDictOption( opts, CONTROLLERS, [], 'controller', action='append' )
addDictOption( opts, LINKS, LINKDEF, 'link' )
addDictOption( opts, TOPOS, TOPODEF, 'topo' )
opts.add_option( '--clean', '-c', action='store_true',
default=False, help='clean and exit' )
opts.add_option( '--custom', action='callback',
callback=self.custom,
type='string',
help='read custom classes or params from .py file(s)'
)
testList = TESTNAMES + TESTS.keys()
opts.add_option( '--test', default=[], action='append',
dest='tests', help='|'.join( testList ) )
opts.add_option( '--xterms', '-x', action='store_true',
default=False, help='spawn xterms for each node' )
opts.add_option( '--ipbase', '-i', type='string', default='10.0.0.0/8',
help='base IP address for hosts' )
opts.add_option( '--mac', action='store_true',
default=False, help='automatically set host MACs' )
opts.add_option( '--arp', action='store_true',
default=False, help='set all-pairs ARP entries' )
opts.add_option( '--verbosity', '-v', type='choice',
choices=LEVELS.keys(), default = 'info',
help = '|'.join( LEVELS.keys() ) )
opts.add_option( '--innamespace', action='store_true',
default=False, help='sw and ctrl in namespace?' )
opts.add_option( '--listenport', type='int', default=6654,
help='base port for passive switch listening' )
opts.add_option( '--nolistenport', action='store_true',
default=False, help="don't use passive listening " +
"port")
opts.add_option( '--pre', type='string', default=None,
help='CLI script to run before tests' )
opts.add_option( '--post', type='string', default=None,
help='CLI script to run after tests' )
opts.add_option( '--pin', action='store_true',
default=False, help="pin hosts to CPU cores "
"(requires --host cfs or --host rt)" )
opts.add_option( '--nat', action='callback', callback=self.setNat,
help="[option=val...] adds a NAT to the topology that"
" connects Mininet hosts to the physical network."
" Warning: This may route any traffic on the machine"
" that uses Mininet's"
" IP subnet into the Mininet network."
" If you need to change"
" Mininet's IP subnet, see the --ipbase option." )
opts.add_option( '--version', action='callback', callback=version,
help='prints the version and exits' )
opts.add_option( '--cluster', type='string', default=None,
metavar='server1,server2...',
help=( 'run on multiple servers (experimental!)' ) )
opts.add_option( '--placement', type='choice',
choices=PLACEMENT.keys(), default='block',
metavar='block|random',
help=( 'node placement for --cluster '
'(experimental!) ' ) )
self.options, self.args = opts.parse_args()
# We don't accept extra arguments after the options
if self.args:
opts.print_help()
exit()
def setup( self ):
"Setup and validate environment."
# set logging verbosity
if LEVELS[self.options.verbosity] > LEVELS['output']:
print ( '*** WARNING: selected verbosity level (%s) will hide CLI '
'output!\n'
'Please restart Mininet with -v [debug, info, output].'
% self.options.verbosity )
lg.setLogLevel( self.options.verbosity )
# Maybe we'll reorganize this someday...
# pylint: disable=too-many-branches,too-many-statements
def begin( self ):
"Create and run mininet."
if self.options.cluster:
servers = self.options.cluster.split( ',' )
for server in servers:
ClusterCleanup.add( server )
if self.options.clean:
cleanup()
exit()
start = time.time()
if not self.options.controller:
# Update default based on available controllers
CONTROLLERS[ 'default' ] = findController()
self.options.controller = [ 'default' ]
if not CONTROLLERS[ 'default' ]:
self.options.controller = [ 'none' ]
if self.options.switch == 'default':
info( '*** No default OpenFlow controller found '
'for default switch!\n' )
info( '*** Falling back to OVS Bridge\n' )
self.options.switch = 'ovsbr'
elif self.options.switch not in ( 'ovsbr', 'lxbr' ):
raise Exception( "Could not find a default controller "
"for switch %s" %
self.options.switch )
topo = buildTopo( TOPOS, self.options.topo )
switch = customClass( SWITCHES, self.options.switch )
host = customClass( HOSTS, self.options.host )
controller = [ customClass( CONTROLLERS, c )
for c in self.options.controller ]
if self.options.switch == 'user' and self.options.link == 'default':
debug( '*** Using TCULink with UserSwitch\n' )
# Use link configured correctly for UserSwitch
self.options.link = 'tcu'
link = customClass( LINKS, self.options.link )
if self.validate:
self.validate( self.options )
ipBase = self.options.ipbase
xterms = self.options.xterms
mac = self.options.mac
arp = self.options.arp
pin = self.options.pin
listenPort = None
if not self.options.nolistenport:
listenPort = self.options.listenport
# Handle inNamespace, cluster options
inNamespace = self.options.innamespace
cluster = self.options.cluster
if inNamespace and cluster:
print "Please specify --innamespace OR --cluster"
exit()
Net = MininetWithControlNet if inNamespace else Mininet
cli = ClusterCLI if cluster else CLI
if cluster:
warn( '*** WARNING: Experimental cluster mode!\n'
'*** Using RemoteHost, RemoteOVSSwitch, RemoteLink\n' )
host, switch, link = RemoteHost, RemoteOVSSwitch, RemoteLink
Net = partial( MininetCluster, servers=servers,
placement=PLACEMENT[ self.options.placement ] )
mn = Net( topo=topo,
switch=switch, host=host, controller=controller,
link=link,
ipBase=ipBase,
inNamespace=inNamespace,
xterms=xterms, autoSetMacs=mac,
autoStaticArp=arp, autoPinCpus=pin,
listenPort=listenPort )
if self.options.ensure_value( 'nat', False ):
nat = mn.addNAT( *self.options.nat_args,
**self.options.nat_kwargs )
nat.configDefault()
if self.options.pre:
cli( mn, script=self.options.pre )
mn.start()
if not self.options.tests:
cli( mn )
for test in self.options.tests:
test = TESTS.get( test, test )
if callable( test ): # user added TESTMAP={'mytest': testfn}
test( mn )
elif test == 'none':
pass
elif test == 'all':
mn.waitConnected()
mn.start()
mn.ping()
mn.iperf()
elif test == 'cli':
cli( mn )
elif test != 'build':
mn.waitConnected()
getattr( mn, test )()
if self.options.post:
cli( mn, script=self.options.post )
mn.stop()
elapsed = float( time.time() - start )
info( 'completed in %0.3f seconds\n' % elapsed )
if __name__ == "__main__":
try:
MininetRunner()
except KeyboardInterrupt:
info( "\n\nKeyboard Interrupt. Shutting down and cleaning up...\n\n")
cleanup()
except Exception:
# Print exception
type_, val_, trace_ = sys.exc_info()
errorMsg = ( "-"*80 + "\n" +
"Caught exception. Cleaning up...\n\n" +
"%s: %s\n" % ( type_.__name__, val_ ) +
"-"*80 + "\n" )
error( errorMsg )
# Print stack trace to debug log
import traceback
stackTrace = traceback.format_exc()
debug( stackTrace + "\n" )
cleanup()