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onos/tools/test/topos/opticalUtils.py
Ayaka Koshibe d88b81d300 opticalUtils.py modifications 
o Topology.json matches what the network configuration system expects. New method
for converting opticalJSON added to add layer of indirection to (hopefully) make
changes easier in the future if syntax changes for any files.

o onos-topo-cfg takes a third argument for REST uri path. This is for backwards
compatibility, and can hopefully be removed when everything is ported away from
using the ConfigProvider.

Change-Id: I56a117f33194dd420ea4970cd612c980b5c020b9
2015-09-22 00:41:38 +00:00

824 lines
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#!/usr/bin/python
'''
Notes:
This file contains classes and methods useful for integrating LincOE with Mininet,
such as startOE, stopOE, LINCLink, and OpticalSwitch
- $ONOS_ROOT ust be set
- Need to run with sudo -E to preserve ONOS_ROOT env var
- We assume LINC-Config-Generator is named LINC-Config-Generator
- We also assume linc-oe is named linc-oe
- LINC-config-generator and linc-oe must be subdirectories of the user's
home directory
TODO
-----------
- clean up files after runtime
- maybe save the old files in a separate directory?
- modify script to allow startOE to run before net.start()
- add ONOS as a controller in script
Usage:
------------
- import LINCLink and OpticalSwitch from this module
- import startOE and stopOE from this module
- create topology as you would a normal topology. when
to an optical switch with topo.addLink, always specify cls=LINCLink
- when creating an optical switch, use cls=OpticalSwitch in topo.addSwitch
- for annotations on links and switches, a dictionary must be passed in as
the annotations argument
- startOE must be run AFTER net.start() with net as an argument.
- stopOE can be run at any time
I created a separate function to start lincOE to avoid subclassing Mininet.
In case anyone wants to write something that DOES subclass Mininet, I
thought I would outline how:
If we want an object that starts lincOE within the mininet class itself,
we need to add another object to Mininet that contains all of the json object
information for each switch. We would still subclass switch and link, but these
classes would basically be dummy classes that store their own json information
in the Mininet class object. We may also change the default switch class to add
it's tap interfaces from lincOE during startup. The start() method for mininet would
grab all of the information from these switches and links, write configuration files
for lincOE using the json module, start lincOE, then run the start methodfor each
switch. The new start() method for each switch would parse through the sys.config
file that was created and find the tap interface it needs to connect to, similar
to the findTap function that I currently use. After all of the controllers and
switches have been started, the new Mininet start() method should also push the
Topology configuration file to ONOS.
'''
import sys
import re
import json
import os
from time import sleep
import urllib2
from mininet.node import Switch, RemoteController
from mininet.topo import Topo
from mininet.util import quietRun
from mininet.net import Mininet
from mininet.log import setLogLevel, info, error, warn
from mininet.link import Link, Intf
from mininet.cli import CLI
# Sleep time and timeout values in seconds
SLEEP_TIME = 2
TIMEOUT = 60
class OpticalSwitch(Switch):
"""
For now, same as Switch class.
"""
pass
class OpticalIntf(Intf):
"""
For now,same as Intf class.
"""
pass
class OpticalLink(Link):
"""
For now, same as Link.
"""
pass
class LINCSwitch(OpticalSwitch):
"""
LINCSwitch class
"""
# FIXME:Sometimes LINC doesn't remove pipes and on restart increase the pipe
# number from erlang.pipe.1.* to erlang.pipe.2.*, so should read and write
# from latest pipe files. For now we are removing all the pipes before
# starting LINC.
### User Name ###
user = os.getlogin()
### pipes ###
readPipe = "/tmp/home/{}/linc-oe/rel/linc/erlang.pipe.1.r".format(user)
writePipe = "/tmp/home/{}/linc-oe/rel/linc/erlang.pipe.1.w".format(user)
### sys.config path ###
sysConfig = "/home/{}/linc-oe/rel/linc/releases/1.0/sys.config".format(user)
### method, mapping dpid to LINC switchId ###
@staticmethod
def dpids_to_ids(sysConfig):
'''
return the dict containing switch dpids as key and LINC switch id as values
'''
dpids_to_ids = {}
fd = None
try:
with open(sysConfig, 'r', 0) as fd:
switch_id = 1
for line in fd:
dpid = re.search(r'([0-9A-Fa-f]{2}[:-]){7}([0-9A-Fa-f]{2})+', line, re.I)
if dpid:
dpids_to_ids[dpid.group().replace(':', '')] = switch_id
switch_id += 1
return dpids_to_ids
except:
print "Error working with {}\nError: {}\n".format(sysConfig, sys.exc_info())
fd.close()
return None
### dict of containing dpids as key and corresponding LINC switchId as values ###
dpidsToLINCSwitchId = dpids_to_ids.__func__(sysConfig)
@staticmethod
def findDir(directory, userName):
"finds and returns the path of any directory in the user's home directory"
homeDir = '/home/' + userName
Dir = quietRun('find %s -maxdepth 1 -name %s -type d' % (homeDir, directory)).strip('\n')
DirList = Dir.split('\n')
if not Dir:
return None
elif len(DirList) > 1 :
warn('***WARNING: Found multiple instances of %s; using %s\n'
% (directory, DirList[ 0 ]))
return DirList[ 0 ]
else:
return Dir
### ONOS Directory ###
try:
onosDir = os.environ[ 'ONOS_ROOT' ]
except:
onosDir = findDir('onos', user)
if not onosDir:
error('Please set ONOS_ROOT environment variable!\n')
else:
os.environ[ 'ONOS_ROOT' ] = onosDir
### REST USER/PASS ###
try:
restUser = os.environ[ 'ONOS_WEB_USER' ]
restPass = os.environ[ 'ONOS_WEB_PASS' ]
except:
error('***WARNING: $ONOS_WEB_USER and $ONOS_WEB_PASS aren\'t set!\n')
error('***WARNING: Setting (probably) sane WEB user/pass values\n')
restUser = 'onos'
restPass = 'rocks'
os.environ[ 'ONOS_WEB_USER' ] = restUser
os.environ[ 'ONOS_WEB_PASS' ] = restPass
### LINC-directory
lincDir = findDir.__func__('linc-oe', user)
if not lincDir:
error("***ERROR: Could not find linc-oe in user's home directory\n")
### LINC config generator directory###
configGen = findDir.__func__('LINC-config-generator', user)
if not configGen:
error("***ERROR: Could not find LINC-config-generator in user's home directory\n")
# list of all the controllers
controllers = None
def __init__(self, name, dpid=None, allowed=True,
switchType='ROADM', topo=None, annotations={}, controller=None, **params):
params[ 'inNamespace' ] = False
Switch.__init__(self, name, dpid=dpid, **params)
self.name = name
self.annotations = annotations
self.allowed = allowed
self.switchType = switchType
self.configDict = {} # dictionary that holds all of the JSON configuration data
self.crossConnects = []
self.deletedCrossConnects = []
self.controller = controller
self.lincId = self._get_linc_id() # use to communicate with LINC
self.lincStarted = False
def start(self, *opts, **params):
'''Instead of starting a virtual switch, we build the JSON
dictionary for the emulated optical switch'''
# TODO:Once LINC has the ability to spawn network element dynamically
# we need to use this method to spawn new logical LINC switch rather then
# bulding JSON.
# if LINC is started then we can start and stop logical switches else create JSON
if self.lincStarted:
return self.start_oe()
self.configDict[ 'uri' ] = 'of:' + self.dpid
self.configDict[ 'annotations' ] = self.annotations
self.configDict[ 'annotations' ].setdefault('name', self.name)
self.configDict[ 'hw' ] = 'LINC-OE'
self.configDict[ 'mfr' ] = 'Linc'
self.configDict[ 'mac' ] = 'ffffffffffff' + self.dpid[-2] + self.dpid[-1]
self.configDict[ 'type' ] = self.switchType
self.configDict[ 'ports' ] = []
for port, intf in self.intfs.items():
if intf.name == 'lo':
continue
else:
self.configDict[ 'ports' ].append(intf.json())
self.lincStarted = True
def stop(self, deleteIntfs=False):
'''
stop the existing switch
'''
# TODO:Add support for deleteIntf
self.stop_oe()
def dpctl( self, *args ):
"Run dpctl command: ignore for now"
pass
def write_to_cli(self, command):
'''
send command to LINC
'''
fd = None
try:
fd = open(self.writePipe, 'w', 0)
fd.write(command)
fd.close()
except:
print "Error working with {}\nError: {}\n".format(self.writePipe, sys.exc_info())
if fd:
fd.close()
def read_from_cli(self):
'''
read the output from the LINC CLI
'''
response = None
fd = None
try:
fd = open(self.readPipe, 'r', 0)
fcntl.fcntl(fd, fcntl.F_SETFL, os.O_NONBLOCK) # for non-blocking read
# FIXME:Due to non-blocking read most for the time we read nothing
response = fd.read()
fd.close()
except :
# print "Error working with {}\nError: {}\n".format(self.readPipe, sys.exc_info())
if fd:
fd.close()
return response
def _get_linc_id(self):
'''
return the corresponding LINC switchId.
'''
return LINCSwitch.dpidsToLINCSwitchId.get(self.dpid)
#--------------------------------------------------------------------------
# LINC CLI commands
#--------------------------------------------------------------------------
def start_oe(self):
'''
existing LINC switch
'''
#starting Switch
cmd = "linc:start_switch({}).\r\n".format(self.lincId)
self.write_to_cli(cmd)
#hanlding taps interfaces related to the switch
crossConnectJSON = {}
linkConfig = []
for i in range(0,len(self.deletedCrossConnects)):
crossConnect = self.deletedCrossConnects.pop()
tap = None
if isinstance(crossConnect.intf1.node, LINCSwitch):
intf = crossConnect.intf2
tapPort = crossConnect.intf1.port
else:
intf = crossConnect.intf1
tapPort = crossConnect.intf2.port
tap = LINCSwitch.findTap(self, tapPort)
if tap:
LINCSwitch.setupInts([tap])
intf.node.attach(tap)
self.crossConnects.append(crossConnect)
linkConfig.append(crossConnect.json())
#Sending crossConnect info to the ONOS.
crossConnectJSON['links'] = linkConfig
with open("crossConnect.json", 'w') as fd:
json.dump(crossConnectJSON, fd, indent=4, separators=(',', ': '))
info('*** Pushing crossConnect.json to ONOS\n')
output = quietRun('%s/tools/test/bin/onos-topo-cfg %s\
Topology.json network/configuration/' % (self.onosDir, self.controllers[ 0 ].ip), shell=True)
def stop_oe(self):
'''
stop the existing LINC switch
'''
cmd = "linc:stop_switch({}).\r\n".format(self.lincId)
self.write_to_cli(cmd)
#handling taps if any
for i in range(0, len(self.crossConnects)):
crossConnect = self.crossConnects.pop()
if isinstance(crossConnect.intf1.node, LINCSwitch):
intf = crossConnect.intf2
tapPort = crossConnect.intf1.port
else:
intf = crossConnect.intf1
tapPort = crossConnect.intf2.port
intf.node.detach(LINCSwitch.findTap(self, tapPort))
self.deletedCrossConnects.append(crossConnect)
def w_port_up(self, port):
'''
port_up
'''
cmd = "linc:port_up({},{}).\r\n".format(self.lincId, port)
self.write_to_cli(cmd)
def w_port_down(self, port):
'''
port_down
'''
cmd = "linc:port_down({},{}).\r\n".format(self.lincId, port)
self.write_to_cli(cmd)
# helper functions
@staticmethod
def switchJSON(switch):
"Returns the json configuration for a packet switch"
configDict = {}
configDict[ 'uri' ] = 'of:' + switch.dpid
configDict[ 'mac' ] = quietRun('cat /sys/class/net/%s/address' % switch.name).strip('\n').translate(None, ':')
configDict[ 'hw' ] = 'PK' # FIXME what about OVS?
configDict[ 'mfr' ] = 'Linc' # FIXME what about OVS?
configDict[ 'type' ] = 'SWITCH' # FIXME what about OVS?
annotations = switch.params.get('annotations', {})
annotations.setdefault('name', switch.name)
configDict[ 'annotations' ] = annotations
ports = []
for port, intf in switch.intfs.items():
if intf.name == 'lo':
continue
portDict = {}
portDict[ 'port' ] = port
portDict[ 'type' ] = 'FIBER' if isinstance(intf.link, LINCLink) else 'COPPER'
intfList = [ intf.link.intf1, intf.link.intf2 ]
intfList.remove(intf)
portDict[ 'speed' ] = intfList[ 0 ].speed if isinstance(intf.link, LINCLink) else 0
ports.append(portDict)
configDict[ 'ports' ] = ports
return configDict
@staticmethod
def bootOE(net):
"Start the LINC optical emulator within a mininet instance"
LINCSwitch.opticalJSON = {}
linkConfig = []
devices = []
#setting up the controllers for LINCSwitch class
LINCSwitch.controllers = net.controllers
for switch in net.switches:
if isinstance(switch, OpticalSwitch):
devices.append(switch.json())
else:
devices.append(LINCSwitch.switchJSON(switch))
LINCSwitch.opticalJSON[ 'devices' ] = devices
for link in net.links:
if isinstance(link, LINCLink) :
linkConfig.append(link.json())
LINCSwitch.opticalJSON[ 'links' ] = linkConfig
info('*** Writing Topology.json file\n')
topoJSON = LINCSwitch.makeTopoJSON()
with open('Topology.json', 'w') as outfile:
json.dump(topoJSON, outfile, indent=4, separators=(',', ': '))
info('*** Converting Topology.json to linc-oe format (TopoConfig.json) file (no oecfg) \n')
topoConfigJson = {}
dpIdToName = {}
topoConfigJson["switchConfig"] = LINCSwitch.getSwitchConfig(dpIdToName)
topoConfigJson["linkConfig"] = LINCSwitch.getLinkConfig(dpIdToName)
#Writing to TopoConfig.json
with open( 'TopoConfig.json', 'w' ) as outfile:
json.dump( topoConfigJson, outfile, indent=4, separators=(',', ': ') )
info('*** Creating sys.config...\n')
output = quietRun('%s/config_generator TopoConfig.json %s/sys.config.template %s %s'
% (LINCSwitch.configGen, LINCSwitch.configGen, LINCSwitch.controllers[ 0 ].ip, LINCSwitch.controllers[ 0 ].port), shell=True)
if output:
error('***ERROR: Error creating sys.config file: %s\n' % output)
return False
info ('*** Setting multiple controllers in sys.config...\n')
searchStr = '\[{"Switch.*$'
ctrlStr = ''
for index in range(len(LINCSwitch.controllers)):
ctrlStr += '{"Switch%d-Controller","%s",%d,tcp},' % (index, net.controllers[index].ip, net.controllers[index].port)
replaceStr = '[%s]},' % ctrlStr[:-1] # Cut off last comma
sedCmd = 'sed -i \'s/%s/%s/\' sys.config' % (searchStr, replaceStr)
output = quietRun(sedCmd, shell=True)
info('*** Copying sys.config to linc-oe directory: ', output + '\n')
output = quietRun('cp -v sys.config %s/rel/linc/releases/1.0/' % LINCSwitch.lincDir, shell=True).strip('\n')
info(output + '\n')
info('*** Adding taps and bringing them up...\n')
LINCSwitch.setupInts(LINCSwitch.getTaps())
info('*** removing pipes if any \n')
quietRun('rm /tmp/home/%s/linc-oe/rel/linc/*' % LINCSwitch.user, shell=True)
info('*** Starting linc OE...\n')
output = quietRun('%s/rel/linc/bin/linc start' % LINCSwitch.lincDir, shell=True)
if output:
error('***ERROR: LINC-OE: %s' % output + '\n')
quietRun('%s/rel/linc/bin/linc stop' % LINCSwitch.lincDir, shell=True)
return False
info('*** Waiting for linc-oe to start...\n')
LINCSwitch.waitStarted(net)
info('*** Adding cross-connect (tap) interfaces to packet switches...\n')
for link in net.links:
if isinstance(link, LINCLink):
if link.annotations[ 'optical.type' ] == 'cross-connect':
for intf in [ link.intf1, link.intf2 ]:
if not isinstance(intf, LINCIntf):
intfList = [ intf.link.intf1, intf.link.intf2 ]
intfList.remove(intf)
intf2 = intfList[ 0 ]
intf.node.attach(LINCSwitch.findTap(intf2.node, intf2.node.ports[ intf2 ]))
info('*** Waiting for all devices to be available in ONOS...\n')
url = 'http://%s:8181/onos/v1/devices' % LINCSwitch.controllers[0].ip
time = 0
# Set up password authentication
pw_mgr = urllib2.HTTPPasswordMgrWithDefaultRealm()
pw_mgr.add_password(None, url, LINCSwitch.restUser, LINCSwitch.restPass)
handler = urllib2.HTTPBasicAuthHandler(pw_mgr)
opener = urllib2.build_opener(handler)
opener.open(url)
urllib2.install_opener(opener)
while True:
response = json.load(urllib2.urlopen(url))
devs = response.get('devices')
# Wait for all devices to be registered
if (len(devices) != len(devs)):
continue
# Wait for all devices to available
available = True
for d in devs:
available &= d['available']
if available:
break
if (time >= TIMEOUT):
error('***ERROR: ONOS did not register devices within %s seconds\n' % TIMEOUT)
break
time += SLEEP_TIME
sleep(SLEEP_TIME)
info('*** Pushing Topology.json to ONOS\n')
for index in range(len(LINCSwitch.controllers)):
output = quietRun('%s/tools/test/bin/onos-topo-cfg %s Topology.json network/configuration/ &'\
% (LINCSwitch.onosDir, LINCSwitch.controllers[ index ].ip), shell=True)
# successful output contains the two characters '{}'
# if there is more output than this, there is an issue
if output.strip('{}'):
warn('***WARNING: Could not push topology file to ONOS: %s\n' % output)
#converts node ids to linc-oe format, with colons every two chars
@staticmethod
def dpId(id):
nodeDpid = ""
id = id.split("/", 1)[0]
for i in range(3, len(id) - 1, 2):
nodeDpid += (id[i:(i + 2):]) + ":"
return nodeDpid[0:-1];
@staticmethod
def makeTopoJSON():
"""
Builds ONOS network conifg system compatible dicts to be written as Topology.json file.
"""
topology = {}
links = {}
devices = {}
ports = {}
for switch in LINCSwitch.opticalJSON[ 'devices' ]:
# build device entries - keyed on uri (DPID) and config key 'basic'
devDict = {}
devDict[ 'driver' ] = switch[ 'hw' ]
devDict[ 'mfr' ] = switch[ 'mfr' ]
devDict[ 'mac' ] = switch[ 'mac' ]
devDict[ 'type' ] = switch[ 'type' ]
devDict.update(switch[ 'annotations' ])
devSubj = switch[ 'uri' ]
devices[ devSubj ] = { 'basic': devDict }
# build port entries - keyed on "uri/port" and config key 'optical'
for port in switch[ 'ports' ]:
portSubj = devSubj + '/' + str(port[ 'port' ])
ports[ portSubj ] = { 'optical': port }
# build link entries - keyed on "uri/port-uri/port" and config key 'basic'
for link in LINCSwitch.opticalJSON[ 'links' ]:
linkDict = {}
linkDict[ 'type' ] = link[ 'type' ]
linkDict.update(link[ 'annotations' ])
linkSubj = link[ 'src' ] + '-' + link[ 'dst' ]
links[ linkSubj ] = { 'basic': linkDict }
topology[ 'links' ] = links
topology[ 'devices' ] = devices
topology[ 'ports' ] = ports
return topology
@staticmethod
def getSwitchConfig (dpIdToName):
switchConfig = [];
#Iterate through all switches and convert the ROADM switches to linc-oe format
for switch in LINCSwitch.opticalJSON["devices"]:
if switch.get("type", "none") == "ROADM":
builtSwitch = {}
#set basic switch params based on annotations
builtSwitch["allowed"] = True;
builtSwitch["latitude"] = switch["annotations"].get("latitude", 0.0);
builtSwitch["longitude"] = switch["annotations"].get("longitude", 0.0);
#assumed that all switches have this entry
nodeId = switch["uri"]
#convert the nodeId to linc-oe format
nodeDpid = LINCSwitch.dpId(nodeId);
builtSwitch["name"] = switch.get("name", "none");
#keep track of the name corresponding to each switch dpid
dpIdToName[nodeDpid] = builtSwitch["name"];
builtSwitch["nodeDpid"] = nodeDpid
#set switch params and type
builtSwitch["params"] = {};
builtSwitch["params"]["numregens"] = switch["annotations"].get("optical.regens", 0);
builtSwitch["type"] = "Roadm"
#append to list of switches
switchConfig.append(builtSwitch);
return switchConfig
@staticmethod
def getLinkConfig (dpIdToName):
newLinkConfig = [];
#Iterate through all optical links and convert them to linc-oe format
for link in LINCSwitch.opticalJSON["links"]:
if link.get("type", "none") == "OPTICAL":
builtLink = {}
#set basic link params for src and dst
builtLink["allowed"] = True;
builtLink["nodeDpid1"] = LINCSwitch.dpId(link["src"])
builtLink["nodeDpid2"] = LINCSwitch.dpId(link["dst"])
#set more params such as name/bandwidth/port/waves if they exist
params = {}
params["nodeName1"] = dpIdToName.get(builtLink["nodeDpid1"], "none")
params["nodeName2"] = dpIdToName.get(builtLink["nodeDpid2"], "none")
params["port1"] = int(link["src"].split("/")[1])
params["port2"] = int(link["dst"].split("/")[1])
if "bandwidth" in link["annotations"]:
params["bandwidth"] = link["annotations"]["bandwidth"]
if "optical.waves" in link["annotations"]:
params["numWaves"] = link["annotations"]["optical.waves"]
builtLink["params"] = params
#set type of link (WDM or pktOpt)
if link["annotations"].get("optical.type", "cross-connect") == "WDM":
builtLink["type"] = "wdmLink"
else:
builtLink["type"] = "pktOptLink"
newLinkConfig.append(builtLink);
return newLinkConfig
@staticmethod
def waitStarted(net, timeout=TIMEOUT):
"wait until all tap interfaces are available"
tapCount = 0
time = 0
for link in net.links:
if isinstance(link, LINCLink):
if link.annotations[ 'optical.type' ] == 'cross-connect':
tapCount += 1
while True:
if str(tapCount) == quietRun('ip addr | grep tap | wc -l', shell=True).strip('\n'):
return True
if timeout:
if time >= TIMEOUT:
error('***ERROR: LINC OE did not start within %s seconds\n' % TIMEOUT)
return False
time += SLEEP_TIME
sleep(SLEEP_TIME)
@staticmethod
def shutdownOE():
"stop the optical emulator"
info('*** Stopping linc OE...\n')
quietRun('%s/rel/linc/bin/linc stop' % LINCSwitch.lincDir, shell=True)
@staticmethod
def setupInts(intfs):
'''
add taps and bring them up.
'''
for i in intfs:
quietRun('ip tuntap add dev %s mode tap' % i)
quietRun('ip link set dev %s up' % i)
info('*** Intf %s set\n' % i)
@staticmethod
def getTaps(path=None):
'''
return list of all the tops in sys.config
'''
if path is None:
path = '%s/rel/linc/releases/1.0/sys.config' % LINCSwitch.lincDir
fd = open(path, 'r', 0)
sys_data = fd.read()
taps = re.findall('tap\d+', sys_data)
fd.close()
return taps
@staticmethod
def findUser():
"Try to return logged-in (usually non-root) user"
try:
# If we're running sudo
return os.environ[ 'SUDO_USER' ]
except:
try:
# Logged-in user (if we have a tty)
return quietRun('who am i').split()[ 0 ]
except:
# Give up and return effective user
return quietRun('whoami')
@staticmethod
def findTap(node, port, path=None):
'''utility function to parse through a sys.config
file to find tap interfaces for a switch'''
switch = False
portLine = ''
intfLines = []
if path is None:
path = '%s/rel/linc/releases/1.0/sys.config' % LINCSwitch.lincDir
with open(path) as f:
for line in f:
if 'tap' in line:
intfLines.append(line)
if node.dpid in line.translate(None, ':'):
switch = True
continue
if switch:
if 'switch' in line:
switch = False
if 'port_no,%s}' % port in line:
portLine = line
break
if portLine:
m = re.search('port,\d+', portLine)
port = m.group(0).split(',')[ 1 ]
else:
error('***ERROR: Could not find any ports in sys.config\n')
return
for intfLine in intfLines:
if 'port,%s' % port in intfLine:
return re.findall('tap\d+', intfLine)[ 0 ]
def json(self):
"return json configuration dictionary for switch"
return self.configDict
def terminate(self):
pass
class LINCLink(Link):
"""
LINC link class
"""
def __init__(self, node1, node2, port1=None, port2=None, allowed=True,
intfName1=None, intfName2=None, linkType='OPTICAL',
annotations={}, speed1=0, speed2=0, **params):
"Creates a dummy link without a virtual ethernet pair."
self.allowed = allowed
self.annotations = annotations
self.linkType = linkType
self.port1 = port1
self.port2 = port2
params1 = { 'speed': speed1 }
params2 = { 'speed': speed2 }
# self.isCrossConnect = True if self.annotations.get('optical.type') == 'cross-connect' else False
if isinstance(node1, LINCSwitch) and isinstance(node2, LINCSwitch):
self.isCrossConnect = False
else:
self.isCrossConnect = True
if isinstance(node1, LINCSwitch):
cls1 = LINCIntf
if self.isCrossConnect:
node1.crossConnects.append(self)
else:
cls1 = Intf
# bad hack to stop error message from appearing when we try to set up intf in a packet switch,
# and there is no interface there( because we do not run makeIntfPair ). This way, we just set lo up
intfName1 = 'lo'
if isinstance(node2, LINCSwitch):
cls2 = LINCIntf
if self.isCrossConnect:
node2.crossConnects.append(self)
else:
cls2 = Intf
intfName2 = 'lo'
Link.__init__(self, node1, node2, port1=port1, port2=port2,
intfName1=intfName1, intfName2=intfName2, cls1=cls1,
cls2=cls2, params1=params1, params2=params2)
@classmethod
def makeIntfPair(_cls, intfName1, intfName2, *args, **kwargs):
pass
def json(self):
"build and return the json configuration dictionary for this link"
configData = {}
configData[ 'src' ] = ('of:' + self.intf1.node.dpid +
'/%s' % self.intf1.node.ports[ self.intf1 ])
configData[ 'dst' ] = ('of:' + self.intf2.node.dpid +
'/%s' % self.intf2.node.ports[ self.intf2 ])
configData[ 'type' ] = self.linkType
configData[ 'annotations' ] = self.annotations
return configData
class LINCIntf(OpticalIntf):
"""
LINC interface class
"""
def __init__(self, name=None, node=None, speed=0,
port=None, link=None, **params):
self.node = node
self.speed = speed
self.port = port
self.link = link
self.name = name
node.addIntf(self, port=port)
self.params = params
self.ip = None
def json(self):
"build and return the JSON information for this interface( not used right now )"
configDict = {}
configDict[ 'port' ] = self.port
configDict[ 'speed' ] = self.speed
configDict[ 'type' ] = 'FIBER'
return configDict
def config(self, *args, **kwargs):
"dont configure a dummy interface"
pass
def ifconfig(self, status):
"configure the status"
if status == "up":
return self.node.w_port_up(self.port)
elif status == "down":
return self.node.w_port_down(self.port)
class MininetOE(Mininet):
"Mininet with Linc-OE support (starts and stops linc-oe)"
def start(self):
Mininet.start(self)
LINCSwitch.bootOE(self)
def stop(self):
Mininet.stop(self)
LINCSwitch.shutdownOE()
def addControllers(self, controllers):
i = 0
for ctrl in controllers:
self.addController(RemoteController('c%d' % i, ip=ctrl))
i += 1
if __name__ == '__main__':
pass
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