#!/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.

#
# processes --config option from command line
#

this="$0"
while [ -h "$this" ]; do
  ls=`ls -ld "$this"`
  link=`expr "$ls" : '.*-> \(.*\)$'`
  if expr "$link" : '.*/.*' > /dev/null; then
    this="$link"
  else
    this=`dirname "$this"`/"$link"
  fi
done

# convert relative path to absolute path
bin=`dirname "$this"`
script=`basename "$this"`
bin=`cd "$bin"; pwd`
this="$bin/$script"

# the root of the hcatalog-hive installation
export HIVE_HOME=`dirname "$bin"`/share/hcatalog

#check to see if the conf dir is given as an optional argument
while [ $# -gt 0 ]; do    # Until you run out of parameters . . .
  case "$1" in
    --config)
        shift
        confdir=$1
        shift
        HIVE_CONF_DIR=$confdir
        ;;
    --auxpath)
        shift
        HIVE_AUX_JARS_PATH=$1
        shift
        ;;
    *)
        break;
        ;;
  esac
done

#check if /etc/hcatalog/hcat-env.sh file exists in case of rpm installs
if [ -f "/etc/hcatalog/hcat-env.sh" ]; then
  DEFAULT_CONF_DIR="/etc/hcatalog"
else
  #assume that conf is in HIVE_HOME 
  DEFAULT_CONF_DIR="${HIVE_HOME}/conf"
fi

# Allow alternate conf dir location.
HIVE_CONF_DIR="${HIVE_CONF_DIR:-$DEFAULT_CONF_DIR}"

export HIVE_CONF_DIR=$HIVE_CONF_DIR
export HIVE_AUX_JARS_PATH=$HIVE_AUX_JARS_PATH

# Default to use 256MB 
export HADOOP_HEAPSIZE=${HADOOP_HEAPSIZE:-256}