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Nikhil Cheerla
Committed by Gerrit Code Review
5f8f8f0c 1 parent e9b781a3

OECF removed working 

Change-Id: I178a227fedacb4efc8669c839042d952f4efd670
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Showing 4 changed files with 382 additions and 746 deletions
<?xml version="1.0" encoding="UTF-8"?>
<!--
~ Copyright 2014 Open Networking Laboratory
~
~ Licensed under the Apache License, Version 2.0 (the "License");
~ you may not use this file except in compliance with the License.
~ You may obtain a copy of the License at
~
~ http://www.apache.org/licenses/LICENSE-2.0
~
~ Unless required by applicable law or agreed to in writing, software
~ distributed under the License is distributed on an "AS IS" BASIS,
~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
~ See the License for the specific language governing permissions and
~ limitations under the License.
-->
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.onosproject</groupId>
<artifactId>onos-apps</artifactId>
<version>1.3.0-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<artifactId>onos-app-oecfg</artifactId>
<packaging>jar</packaging>
<description>Standalone utility for converting ONOS JSON config to OE-Linc JSON config</description>
<dependencies>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<scope>compile</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<manifestEntries>
<Main-Class>org.onosproject.oecfg.OELinkConfig</Main-Class>
</manifestEntries>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
/*
* Copyright 2014 Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onosproject.oecfg;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
/**
* Utility program to convert standard ONOS config JSON to format expected
* by the OE Link switch.
*/
public final class OELinkConfig {
private ObjectMapper mapper = new ObjectMapper();
private Map<String, String> dpidToName = new HashMap<>();
public static void main(String[] args) {
try {
OELinkConfig config = new OELinkConfig();
JsonNode json = config.convert(System.in);
System.out.println(json.toString());
} catch (IOException e) {
System.err.println("Unable to convert JSON due to: " + e.getMessage());
e.printStackTrace();
}
}
private OELinkConfig() {
}
private JsonNode convert(InputStream input) throws IOException {
JsonNode json = mapper.readTree(input);
ObjectNode result = mapper.createObjectNode();
result.set("switchConfig", opticalSwitches(json));
result.set("linkConfig", opticalLinks(json));
return result;
}
private JsonNode opticalSwitches(JsonNode json) {
ArrayNode result = mapper.createArrayNode();
for (JsonNode node : json.get("devices")) {
String dpid = dpid(node.path("uri"));
String name = node.path("name").asText("none");
dpidToName.put(dpid, name);
if (node.path("type").asText("none").equals("ROADM")) {
result.add(opticalSwitch(dpid, name, (ObjectNode) node));
}
}
return result;
}
private ObjectNode opticalSwitch(String dpid, String name, ObjectNode node) {
ObjectNode result = mapper.createObjectNode();
ObjectNode annot = (ObjectNode) node.path("annotations");
result.put("allowed", true).put("type", "Roadm")
.put("name", name).put("nodeDpid", dpid)
.put("latitude", annot.path("latitude").asDouble(0.0))
.put("longitude", annot.path("longitude").asDouble(0.0))
.set("params", switchParams(annot));
return result;
}
private ObjectNode switchParams(ObjectNode annot) {
return mapper.createObjectNode()
.put("numRegen", annot.path("optical.regens").asInt(0));
}
private JsonNode opticalLinks(JsonNode json) {
ArrayNode result = mapper.createArrayNode();
for (JsonNode node : json.get("links")) {
if (node.path("type").asText("none").equals("OPTICAL")) {
result.add(opticalLink((ObjectNode) node));
}
}
return result;
}
private ObjectNode opticalLink(ObjectNode node) {
ObjectNode result = mapper.createObjectNode();
ObjectNode annot = (ObjectNode) node.path("annotations");
String src = dpid(node.path("src"));
String dst = dpid(node.path("dst"));
result.put("allowed", true).put("type", linkType(annot))
.put("nodeDpid1", src).put("nodeDpid2", dst)
.set("params", linkParams(src, dst, node, annot));
return result;
}
private String linkType(ObjectNode annot) {
return annot.path("optical.type").asText("cross-connect").equals("WDM") ?
"wdmLink" : "pktOptLink";
}
private ObjectNode linkParams(String src, String dst,
ObjectNode node, ObjectNode annot) {
ObjectNode result = mapper.createObjectNode()
.put("nodeName1", dpidToName.get(src))
.put("nodeName2", dpidToName.get(dst))
.put("port1", port(node.path("src")))
.put("port2", port(node.path("dst")));
if (annot.has("bandwidth")) {
result.put("bandwidth", annot.path("bandwidth").asInt());
}
if (annot.has("optical.waves")) {
result.put("numWaves", annot.path("optical.waves").asInt());
}
return result;
}
private String dpid(JsonNode node) {
String s = node.asText("of:0000000000000000").substring(3);
return s.substring(0, 2) + ":" + s.substring(2, 4) + ":" +
s.substring(4, 6) + ":" + s.substring(6, 8) + ":" +
s.substring(8, 10) + ":" + s.substring(10, 12) + ":" +
s.substring(12, 14) + ":" + s.substring(14, 16);
}
private int port(JsonNode node) {
return Integer.parseInt(node.asText("of:0000000000000000/0").substring(20));
}
}
......@@ -40,7 +40,6 @@
<module>sdnip</module>
<module>optical</module>
<module>metrics</module>
<module>oecfg</module>
<module>routing</module>
<module>routing-api</module>
<module>reactive-routing</module>
......
......@@ -4,7 +4,7 @@
Notes:
This file contains classes and methods useful for integrating LincOE with Mininet,
such as startOE, stopOE, LINCLink, and OpticalSwitch
such as startOE, stopOE, OpticalLink, and OpticalSwitch
- $ONOS_ROOT ust be set
- Need to run with sudo -E to preserve ONOS_ROOT env var
......@@ -22,10 +22,10 @@ such as startOE, stopOE, LINCLink, and OpticalSwitch
Usage:
------------
- import LINCLink and OpticalSwitch from this module
- import OpticalLink 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
to an optical switch with topo.addLink, always specify cls=OpticalLink
- 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
......@@ -51,12 +51,11 @@ 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
......@@ -66,127 +65,25 @@ 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
### 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):
class OpticalSwitch( Switch ):
def __init__( self, name, dpid=None, allowed=True,
switchType='ROADM', annotations={}, **params ):
params[ 'inNamespace' ] = False
Switch.__init__(self, name, dpid=dpid, **params)
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):
self.configDict = {} # dictionary that holds all of the JSON configuration data
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[ 'annotations' ].setdefault( 'name', self.name )
self.configDict[ 'hw' ] = 'OE'
self.configDict[ 'mfr' ] = 'Linc'
self.configDict[ 'mac' ] = 'ffffffffffff' + self.dpid[-2] + self.dpid[-1]
self.configDict[ 'type' ] = self.switchType
......@@ -195,441 +92,74 @@ class LINCSwitch(OpticalSwitch):
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):
'''
start the 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' % (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"
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))
opticalJSON[ 'devices' ] = devices
for link in net.links:
if isinstance(link, LINCLink) :
linkConfig.append(link.json())
opticalJSON[ 'links' ] = linkConfig
info('*** Writing Topology.json file\n')
with open('Topology.json', 'w') as outfile:
json.dump(opticalJSON, outfile, indent=4, separators=(',', ': '))
info('*** Converting Topology.json to linc-oe format (TopoConfig.json) file\n')
output = quietRun('%s/tools/test/bin/onos-oecfg ./Topology.json > TopoConfig.json' % LINCSwitch.onosDir, shell=True)
if output:
error('***ERROR: Error creating topology file: %s ' % output + '\n')
return False
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
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
self.configDict[ 'ports' ].append( intf.json() )
# 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 &' % (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)
@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):
def json( self ):
"return json configuration dictionary for switch"
return self.configDict
def terminate(self):
def terminate( self ):
pass
class LINCLink(Link):
"""
LINC link class
"""
def __init__(self, node1, node2, port1=None, port2=None, allowed=True,
class OpticalLink( Link ):
def __init__( self, node1, node2, port1=None, port2=None, allowed=True,
intfName1=None, intfName2=None, linkType='OPTICAL',
annotations={}, speed1=0, speed2=0, **params):
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)
if isinstance( node1, OpticalSwitch ):
cls1 = OpticalIntf
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)
if isinstance( node2, OpticalSwitch ):
cls2 = OpticalIntf
else:
cls2 = Intf
intfName2 = 'lo'
Link.__init__(self, node1, node2, port1=port1, port2=port2,
Link.__init__( self, node1, node2, port1=port1, port2=port2,
intfName1=intfName1, intfName2=intfName2, cls1=cls1,
cls2=cls2, params1=params1, params2=params2)
cls2=cls2, params1=params1, params2=params2 )
@classmethod
def makeIntfPair(_cls, intfName1, intfName2, *args, **kwargs):
def makeIntfPair( _cls, intfName1, intfName2, *args, **kwargs ):
pass
def json(self):
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[ '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):
class OpticalIntf( Intf ):
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)
node.addIntf( self, port=port )
self.params = params
self.ip = None
def json(self):
def json( self ):
"build and return the JSON information for this interface( not used right now )"
configDict = {}
configDict[ 'port' ] = self.port
......@@ -637,34 +167,356 @@ class LINCIntf(OpticalIntf):
configDict[ 'type' ] = 'FIBER'
return configDict
def config(self, *args, **kwargs):
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)
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, OpticalLink ) else 'COPPER'
intfList = [ intf.link.intf1, intf.link.intf2 ]
intfList.remove( intf )
portDict[ 'speed' ] = intfList[ 0 ].speed if isinstance( intf.link, OpticalLink ) else 0
ports.append( portDict )
configDict[ 'ports' ] = ports
return configDict
def startOE( net ):
"Start the LINC optical emulator within a mininet instance"
opticalJSON = {}
linkConfig = []
devices = []
for switch in net.switches:
if isinstance( switch, OpticalSwitch ):
devices.append( switch.json() )
else:
devices.append( switchJSON( switch ) )
opticalJSON[ 'devices' ] = devices
for link in net.links:
if isinstance( link, OpticalLink ) :
linkConfig.append( link.json() )
opticalJSON[ 'links' ] = linkConfig
try:
onosDir = os.environ[ 'ONOS_ROOT' ]
except:
onosDir = findDir( 'onos' )
if not onosDir:
error( 'Please set ONOS_ROOT environment variable!\n' )
return False
else:
os.environ[ 'ONOS_ROOT' ] = onosDir
info( '*** Writing Topology.json file\n' )
with open( 'Topology.json', 'w' ) as outfile:
json.dump( opticalJSON, outfile, indent=4, separators=(',', ': ') )
info( '*** Converting Topology.json to linc-oe format (TopoConfig.json) file (not using oecfg) \n' )
topoConfigJson = {};
newLinkConfig = [];
switchConfig = [];
dpIdToName = {};
#Iterate through all switches and convert the ROADM switches to linc-oe format
for switch in opticalJSON["devices"]:
if switch["type"] == "ROADM":
builtSwitch = {}
#set basic switch params based on annotations
builtSwitch["allowed"] = True;
builtSwitch["latitude"] = switch["annotations"]["latitude"];
builtSwitch["longitude"] = switch["annotations"]["longitude"];
nodeId = switch["uri"]
#convert the nodeId to linc-oe format
nodeDpid = dpId(nodeId);
if "name" in switch:
builtSwitch["name"] = switch["name"]
else:
builtSwitch["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"]["optical.regens"];
builtSwitch["type"] = "Roadm"
#append to list of switches
switchConfig.append(builtSwitch);
class MininetOE(Mininet):
topoConfigJson["switchConfig"] = switchConfig;
#Iterate through all optical links and convert them to linc-oe format
for link in opticalJSON["links"]:
if link["type"] == "OPTICAL":
builtLink = {}
#set basic link params for src and dst
builtLink["allowed"] = True;
builtLink["nodeDpid1"] = dpId(link["src"])
builtLink["nodeDpid2"] = 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")
if "bandwidth" in link["annotations"]:
params["bandwidth"] = link["annotations"]["bandwidth"]
params["port1"] = int(link["src"].split("/")[1])
params["port2"] = int(link["dst"].split("/")[1])
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"]["optical.type"] == "WDM":
builtLink["type"] = "wdmLink"
else:
builtLink["type"] = "pktOptLink"
newLinkConfig.append(builtLink);
topoConfigJson["linkConfig"] = newLinkConfig;
#Writing to TopoConfig.json
with open( 'TopoConfig.json', 'w' ) as outfile:
json.dump( topoConfigJson, outfile, indent=4, separators=(',', ': ') )
info( '*** Creating sys.config...\n' )
configGen = findDir( 'LINC-config-generator' )
if not configGen:
error( "***ERROR: Could not find LINC-config-generator in user's home directory\n" )
return False
output = quietRun( '%s/config_generator TopoConfig.json %s/sys.config.template %s %s'
% ( configGen, configGen, net.controllers[ 0 ].ip, net.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 = '{controllers,.*$'
ctrlStr = ''
for index in range(len(net.controllers)):
ctrlStr += '{"Switch%d-Controller","%s",%d,tcp},' % (index, net.controllers[index].ip, net.controllers[index].port)
replaceStr = '{controllers,[%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' )
lincDir = findDir( 'linc-oe' )
if not lincDir:
error( "***ERROR: Could not find linc-oe in user's home directory\n" )
return False
output = quietRun( 'cp -v sys.config %s/rel/linc/releases/1.0/' % lincDir, shell=True ).strip( '\n' )
info( output + '\n' )
info( '*** Starting linc OE...\n' )
output = quietRun( '%s/rel/linc/bin/linc start' % lincDir, shell=True )
if output:
error( '***ERROR: LINC-OE: %s' % output + '\n' )
quietRun( '%s/rel/linc/bin/linc stop' % lincDir, shell=True )
return False
info( '*** Waiting for linc-oe to start...\n' )
waitStarted( net )
info( '*** Adding cross-connect (tap) interfaces to packet switches...\n' )
for link in net.links:
if isinstance( link, OpticalLink ):
if link.annotations[ 'optical.type' ] == 'cross-connect':
for intf in [ link.intf1, link.intf2 ]:
if not isinstance( intf, OpticalIntf ):
intfList = [ intf.link.intf1, intf.link.intf2 ]
intfList.remove( intf )
intf2 = intfList[ 0 ]
intf.node.attach( findTap( intf2.node, intf2.node.ports[ intf2 ] ) )
info( '*** Press ENTER to push Topology.json to onos...\n' )
raw_input() # FIXME... we should eventually remove this
info( '*** Pushing Topology.json to ONOS\n' )
output = quietRun( '%s/tools/test/bin/onos-topo-cfg %s Topology.json' % ( onosDir, net.controllers[ 0 ].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' % output )
#converts node ids to linc-oe format, with colons every two chars
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:(len(nodeDpid) - 1)];
def waitStarted( net, timeout=None ):
"wait until all tap interfaces are available"
tapCount = 0
time = 0
for link in net.links:
if isinstance( link, OpticalLink ):
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' % timeout )
return False
time += .5
sleep( .5 )
def stopOE():
"stop the optical emulator"
info( '*** Stopping linc OE...\n' )
lincDir = findDir( 'linc-oe' )
quietRun( '%s/rel/linc/bin/linc stop' % lincDir, shell=True )
def findDir( directory ):
"finds and returns the path of any directory in the user's home directory"
user = findUser()
homeDir = '/home/' + user
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
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' )
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:
lincDir = findDir( 'linc-oe' )
if not lincDir:
error( '***ERROR: Could not find linc-oe in users home directory\n' )
return None
path = '%s/rel/linc/releases/1.0/sys.config' % 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 ]
class MininetOE( Mininet ):
"Mininet with Linc-OE support (starts and stops linc-oe)"
def start(self):
Mininet.start(self)
LINCSwitch.bootOE(self)
def start( self ):
Mininet.start( self )
startOE( self )
def stop(self):
Mininet.stop(self)
LINCSwitch.shutdownOE()
def stop( self ):
Mininet.stop( self )
stopOE()
def addControllers(self, controllers):
def addControllers( self, controllers ):
i = 0
for ctrl in controllers:
self.addController(RemoteController('c%d' % i, ip=ctrl))
i += 1
self.addController( RemoteController( 'c%d' % i, ip=ctrl ) )
class OpticalTestTopo( Topo ):
def build( self ):
opticalAnn = { 'optical.waves': 80, 'optical.type': "WDM", 'durable': True }
switchAnn = { 'bandwidth': 100000, 'optical.type': 'cross-connect', 'durable': True }
h1 = self.addHost( 'h1' )
h2 = self.addHost( 'h2' )
s1 = self.addSwitch( 's1' )
s2 = self.addSwitch( 's2' )
O4 = self.addSwitch( 'O4', cls=OpticalSwitch )
O5 = self.addSwitch( 'O5', cls=OpticalSwitch )
O6 = self.addSwitch( 'O6', cls=OpticalSwitch )
self.addLink( O4, O5, cls=OpticalLink, annotations=opticalAnn )
self.addLink( O5, O6, cls=OpticalLink, annotations=opticalAnn )
self.addLink( s1, O4, cls=OpticalLink, annotations=switchAnn )
self.addLink( s2, O6, cls=OpticalLink, annotations=switchAnn )
self.addLink( h1, s1 )
self.addLink( h2, s2 )
if __name__ == '__main__':
pass
import sys
if len( sys.argv ) >= 2:
controllers = sys.argv[1:]
else:
print 'Usage: ./opticalUtils.py (<Controller IP>)+'
print 'Using localhost...\n'
controllers = [ '127.0.0.1' ]
setLogLevel( 'info' )
net = MininetOE( topo=OpticalTestTopo(), controller=None, autoSetMacs=True )
net.addControllers( controllers )
net.start()
CLI( net )
net.stop()
......