#!/bin/sh

#
# Licensed to the Apache Software Foundation (ASF) under one
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# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
# 
#   http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
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# Start a cluster of brokers on local host, put the list of ports for cluster members in cluster.ports
#

# Execute command with the ais group set.
with_ais_group() {
    id -nG | grep '\<ais\>' >/dev/null || { echo "You are not a member of the ais group." 1>&2; exit 1; }
    echo $* | newgrp ais
}

test -f cluster.ports && { echo "cluster.ports file already exists" ; exit 1; }
rm -f cluster*.log
SIZE=$1; shift
CLUSTER=`pwd`		# Cluster name=pwd, avoid clashes.
OPTS="-d --load-module ../.libs/cluster.so  --cluster-name=$CLUSTER --no-data-dir --auth=no $*"

if test "$SIZE" = "one"; then	# Special case of singleton cluster, use default port.
    ../qpidd -q
    with_ais_group ../qpidd $OPTS --log-to-file=cluster.log || exit 1
else
    for (( i=0; i<SIZE; ++i )); do
	PORT=`with_ais_group ../qpidd  -p0 --log-to-file=cluster$i.log $OPTS`  || exit 1
	echo $PORT >> cluster.ports
    done
fi

