blob: 6b31d0583a0aaa8f9637050acf0fc9abe45c1240 [file] [log] [blame]
import os
import socket
import re
import json
import urllib2
from mininet.log import info, warn, error
from mininet.node import Switch
if 'ONOS_ROOT' not in os.environ:
error("ERROR: environment var $ONOS_ROOT not set")
exit()
BMV2_TARGET = 'simple_switch_grpc'
ONOS_ROOT = os.environ["ONOS_ROOT"]
CPU_PORT = 255
class ONOSBmv2Switch(Switch):
"""BMv2 software switch with gRPC server"""
deviceId = 0
instanceCount = 0
def __init__(self, name, json=None, debugger=False, loglevel="warn", elogger=False,
persistent=False, grpcPort=None, netcfg=True, **kwargs):
Switch.__init__(self, name, **kwargs)
self.grpcPort = ONOSBmv2Switch.pickUnusedPort() if not grpcPort else grpcPort
if self.dpid:
self.deviceId = int(self.dpid, 0 if 'x' in self.dpid else 16)
else:
self.deviceId = ONOSBmv2Switch.deviceId
ONOSBmv2Switch.deviceId += 1
self.json = json
self.debugger = debugger
self.loglevel = loglevel
self.logfile = '/tmp/bmv2-%d.log' % self.deviceId
self.elogger = elogger
self.persistent = persistent
self.netcfg = netcfg
self.netcfgfile = '/tmp/bmv2-%d-netcfg.json' % self.deviceId
if persistent:
self.exectoken = "/tmp/bmv2-%d-exec-token" % self.deviceId
self.cmd("touch %s" % self.exectoken)
# Store thrift port for future uses.
self.cmd("echo %d > /tmp/bmv2-%d-grpc-port" % (self.grpcPort, self.deviceId))
@classmethod
def pickUnusedPort(cls):
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('localhost', 0))
addr, port = s.getsockname()
s.close()
return port
def getSourceIp(self, dstIP):
"""
Queries the Linux routing table to get the source IP that can talk with dstIP, and vice
versa.
"""
ipRouteOut = self.cmd('ip route get %s' % dstIP)
r = re.search(r"src (\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})", ipRouteOut)
return r.group(1) if r else None
def doOnosNetcfg(self, controllerIP):
"""
Notifies ONOS about the new device via Netcfg.
"""
srcIP = self.getSourceIp(controllerIP)
if not srcIP:
warn("WARN: unable to get device IP address, won't do onos-netcfg")
return
onosDeviceId = "bmv2:%s" % self.deviceId
cfgData = {
"devices": {
"device:%s" % onosDeviceId: {
"generalprovider": {
"p4runtime": {
"ip": srcIP,
"port": self.grpcPort,
"deviceId": self.deviceId,
"deviceKeyId": "p4runtime:%s" % onosDeviceId
}
},
"piPipeconf": {
"piPipeconfId": ""
},
"basic": {
"driver": "bmv2"
}
}
}
}
with open(self.netcfgfile, 'w') as fp:
json.dump(cfgData, fp, indent=4)
# Build netcfg URL
url = 'http://%s:8181/onos/v1/network/configuration/' % controllerIP
# Instantiate password manager for HTTP auth
pm = urllib2.HTTPPasswordMgrWithDefaultRealm()
pm.add_password(None, url, os.environ['ONOS_WEB_USER'], os.environ['ONOS_WEB_PASS'])
urllib2.install_opener(urllib2.build_opener(urllib2.HTTPBasicAuthHandler(pm)))
# Push config data to controller
req = urllib2.Request(url, json.dumps(cfgData), {'Content-Type': 'application/json'})
try:
f = urllib2.urlopen(req)
print f.read()
f.close()
except urllib2.URLError as e:
warn("WARN: unable to push config to ONOS (%s)" % e.reason)
def start(self, controllers):
args = [BMV2_TARGET, '--device-id %s' % str(self.deviceId)]
for port, intf in self.intfs.items():
if not intf.IP():
args.append('-i %d@%s' % (port, intf.name))
if self.elogger:
nanomsg = 'ipc:///tmp/bmv2-%d-log.ipc' % self.deviceId
args.append('--nanolog %s' % nanomsg)
if self.debugger:
args.append('--debugger')
args.append('--log-console')
args.append('-L%s' % self.loglevel)
if not self.json:
args.append('--no-p4')
else:
args.append(self.json)
# gRPC target-specific options.
args.append('--')
args.append('--cpu-port %d' % CPU_PORT)
args.append('--grpc-server-addr 0.0.0.0:%d' % self.grpcPort)
bmv2cmd = " ".join(args)
info("\nStarting BMv2 target: %s\n" % bmv2cmd)
if self.persistent:
# Bash loop to re-exec the switch if it crashes.
bmv2cmd = "(while [ -e {} ]; do {} ; sleep 1; done;)".format(self.exectoken, bmv2cmd)
cmdStr = "{} > {} 2>&1 &".format(bmv2cmd, self.logfile)
# Starts the switch.
out = self.cmd(cmdStr)
if out:
print out
if self.netcfg:
try: # onos.py
clist = controllers[0].nodes()
except AttributeError:
clist = controllers
assert len(clist) > 0
cip = clist[0].IP()
self.doOnosNetcfg(cip)
def stop(self, deleteIntfs=True):
"""Terminate switch."""
self.cmd("rm -f /tmp/bmv2-%d-*" % self.deviceId)
self.cmd("rm -f /tmp/bmv2-%d.log*" % self.deviceId)
self.cmd('kill %' + BMV2_TARGET)
Switch.stop(self, deleteIntfs)
# Exports for bin/mn
switches = {'onosbmv2': ONOSBmv2Switch}