function wait_server () {
pid_file=$1; shift
- server_name="$@"; shift
+ server_name=$1; shift
+ timeout=$1; shift
+
+ expire=$(($(date +%s) + $timeout))
## wait for it to be up - xxx todo - could use a timeout of some kind
while [ ! -f "$pid_file" ]; do
- echo "Waiting for $server_name to start..." >&2
+ echo "Waiting for $server_name to start... $(($expire - $(date +%s)))s left" >&2
sleep 1;
+ [ $(date +%s) -ge $expire ] && return 1
done
cat "$pid_file"
}
+function wait_device () {
+ tapname=$1; shift
+ timeout=$1; shift
+
+ expire=$(($(date +%s) + $timeout))
+
+ while ! ip link show up | egrep -q "^[0-9]+: +$tapname:"; do
+ echo "Waiting for $tapname to come UP...$(($expire - $(date +%s)))s left" >&2
+ sleep 1
+ [ $(date +%s) -ge $expire ] && return 1
+ done
+ return 0
+}
+
######################################## startup
function start_db () {
else
echo 'ovsdb-server appears to be running already, *not* starting'
fi
- wait_server $DB_PID_FILE ovsdb-server
+ wait_server $DB_PID_FILE ovsdb-server 30
}
function stop_db () { pkill ovsdb-server; }
else
echo 'ovs-vswitchd appears to be running already, *not* starting'
fi
- wait_server $SWITCH_PID_FILE ovs-vswitchd
+ wait_server $SWITCH_PID_FILE ovs-vswitchd 30
}
function stop_switch () { pkill ovs-vswitchd ; }
$IP
$PREFIX
EOF
- while ! ip link show up | egrep -q "^[0-9]+: +$TAPNAME:"; do
- echo "Waiting for $TAPNAME to come UP..." >&2
- sleep 1
- done
- ovs-vsctl --db=$DB_SOCKET add-br $TAPNAME -- set bridge $TAPNAME datapath_type=planetlab
+ wait_device $TAPNAME 60 && \
+ ovs-vsctl --db=$DB_SOCKET add-br $TAPNAME -- set bridge $TAPNAME datapath_type=planetlab
echo $TAPNAME
return 0
}