#!/usr/bin/env bash

# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file 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 under the License.

# Launch an EC2 HBase slaves.

if [ -z $1 ]; then
  echo "Cluster name required!"
  exit 1
fi

CLUSTER=$1

# Import variables
bin=`dirname "$0"`
bin=`cd "$bin"; pwd`
. "$bin"/hbase-ec2-env.sh

if [ ! -f $INSTANCES_PATH ]; then
  echo "Must start Cluster first!"
  exit 1
fi

instances=`cat $INSTANCES_PATH`
ec2-describe-instances $TOOL_OPTS $instances | grep INSTANCE | grep running | awk '{print $4}'