#!/bin/bash
#
usage() {
cat <<EOF
Distributed perftest with ssh.
Arguments before -- are passed to perftest.
Arguments after -- are treated as host names.
Publisher runs on first host. One listener runs on each 
Remaining host. To run multiple liseners on a host, list it more than once.
Do not pass --consumers, --publish or --listen options, they are computed
from the host list.
EOF
exit 1
}

while test "$HOSTS" != "$*"; do
    case $1 in
	--consumers|--publish|--listen) usage ;;
	--) shift; PUB="$1" ; shift ; HOSTS="$*" ;;
	*) ARGS="$ARGS $1"; shift ;;
    esac
done
test -n "$HOSTS" || { echo "No -- found"; usage; }
N=`echo $HOSTS | wc -w`
PERFTEST=`PATH=$PWD:$PATH which perftest`
$PERFTEST --purge $ARGS
ssh $PUB $PERFTEST $ARGS --publish --consumers $N&
for h in $HOSTS; do
    ssh $h $PERFTEST $ARGS --listen&
done
wait