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initial commit after bringing over cleaned up code and testing some examples

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Blake J. Harnden 2017-04-25 08:45:34 -07:00
parent c4858e6e0d
commit 00f4ebf5a9
93 changed files with 15189 additions and 13083 deletions
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52
daemon/examples/netns/switch.py
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@ -5,24 +5,29 @@
# connect n nodes to a virtual switch/hub
import sys, datetime, optparse
import datetime
import optparse
import sys
from core import pycore
from core.misc import ipaddr
from core.constants import *
from core import constants
from core.misc import ipaddress, nodeutils, nodemaps
from core.netns import nodes
# node list (count from 1)
from core.session import Session
n = [None]
def main():
usagestr = "usage: %prog [-h] [options] [args]"
parser = optparse.OptionParser(usage = usagestr)
parser.set_defaults(numnodes = 5)
parser = optparse.OptionParser(usage=usagestr)
parser.set_defaults(numnodes=5)
parser.add_option("-n", "--numnodes", dest = "numnodes", type = int,
help = "number of nodes")
parser.add_option("-n", "--numnodes", dest="numnodes", type=int,
help="number of nodes")
def usage(msg = None, err = 0):
def usage(msg=None, err=0):
sys.stdout.write("\n")
if msg:
sys.stdout.write(msg + "\n\n")
@ -41,30 +46,35 @@ def main():
start = datetime.datetime.now()
# IP subnet
prefix = ipaddr.IPv4Prefix("10.83.0.0/16")
session = pycore.Session(persistent=True)
prefix = ipaddress.Ipv4Prefix("10.83.0.0/16")
session = Session(1, persistent=True)
if 'server' in globals():
server.addsession(session)
# emulated Ethernet switch
switch = session.addobj(cls = pycore.nodes.SwitchNode, name = "switch")
switch.setposition(x=80,y=50)
print "creating %d nodes with addresses from %s" % \
(options.numnodes, prefix)
switch = session.add_object(cls=nodes.SwitchNode, name="switch")
switch.setposition(x=80, y=50)
print "creating %d nodes with addresses from %s" % (options.numnodes, prefix)
for i in xrange(1, options.numnodes + 1):
tmp = session.addobj(cls = pycore.nodes.CoreNode, name = "n%d" % i,
objid=i)
tmp = session.add_object(cls=nodes.CoreNode, name="n%d" % i, objid=i)
tmp.newnetif(switch, ["%s/%s" % (prefix.addr(i), prefix.prefixlen)])
tmp.cmd([SYSCTL_BIN, "net.ipv4.icmp_echo_ignore_broadcasts=0"])
tmp.setposition(x=150*i,y=150)
tmp.cmd([constants.SYSCTL_BIN, "net.ipv4.icmp_echo_ignore_broadcasts=0"])
tmp.setposition(x=150 * i, y=150)
n.append(tmp)
session.node_count = str(options.numnodes + 1)
session.instantiate()
print "elapsed time: %s" % (datetime.datetime.now() - start)
# start a shell on node 1
n[1].term("bash")
print "elapsed time: %s" % (datetime.datetime.now() - start)
raw_input("press enter to exit")
session.shutdown()
if __name__ == "__main__" or __name__ == "__builtin__":
main()
# configure nodes to use
node_map = nodemaps.CLASSIC_NODES
nodeutils.set_node_map(node_map)
main()