ovs-vsctl --db=unix:$DB_SOCKET set-controller "$bridge_name" "$controller"
}
+function del_controller () {
+
+ get_params "bridge_name" "$@"
+
+ # ensure ovs-vswitchd is running
+ is_switch_running || { echo "ovs-vswitchd not running" >&2 ; exit 1 ; }
+
+ set -e
+ ovs-vsctl --db=unix:$DB_SOCKET del-controller "$bridge_name"
+}
+
#################### del functions
function del_bridge () {
ovs-vsctl --db=unix:$DB_SOCKET show
}
+### for demos - connect to an ndnmap deployment to visualize links bandwidth
+# this expects 3 arguments
+# an interface name, L<id1>-<id2> based on your ids in conf.mk
+# the hostname for a ndnmap deployment
+# a linkid, this is the id that this link has in your ndnmap scenario (hard-coded in some json file)
+# this one-shot function writes the current statistics onto the ndnmap site
+# it needs to be called regularly so that ndnmap can do the bw computations
+# would make sense for the caller to redirect stderr onto some relevant location
+function gmap_probe_once () {
+ iface=$1; shift
+ hostname=$1; shift
+ linkid=$1; shift
+ rx_bytes=$(ovs-appctl netdev-tunnel/get-rx-bytes $iface)
+ tx_bytes=$(ovs-appctl netdev-tunnel/get-tx-bytes $iface)
+ rx_bits=$(($rx_bytes*8))
+ tx_bits=$(($tx_bytes*8))
+ now=$(date +%s).$(date +%N)
+ trigger=http://${hostname}/bw/${linkid}/${now}/${rx_bits}/${tx_bits}
+# curl -s -L $trigger | grep -q "Got it" || echo Missed event with $trigger
+# echo $trigger
+ curl -s -L $trigger >& /dev/null
+}
+
+### the front end, manages pid and so on
+function gmap_probe () {
+ iface=$1; shift
+ hostname=$1; shift
+ linkid=$1; shift
+ looptime=$1; shift
+ [ -z "$looptime" ] && looptime=1
+ pid_file=/var/run/openvswitch/gmap-$iface.pid
+ if [ -f $pid_file ] ; then
+ pid=$(cat $pid_file)
+ [ -n "$pid" ] && kill $pid >& /dev/null
+ rm $pid_file
+ fi
+ # close std fds so that ssh invokations can return
+ exec <&-
+ exec >&-
+ while true; do
+ gmap_probe_once $iface $hostname $linkid
+ sleep $looptime
+ done &
+ # this is the pid for the background process
+ echo $! > $pid_file
+}
+
####################
SUPPORTED_SUBCOMMANDS="start stop status
start_db stop_db start_switch stop_switch
create_bridge create_port del_bridge del_port
-show set_remote_endpoint"
+show set_remote_endpoint set_controller del_controller gmap_probe"
function main () {
message="Usage: $COMMAND <subcommand> ...