#!/bin/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.
#

if [ "${HADOOP_HOME}x" = "x" ]; then
  echo "Error: HADOOP_HOME must be set in the environment"
  exit 1
fi

# resolve links - $0 may be a softlink
PRG="${0}"

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

BASEDIR=`dirname ${PRG}`
BASEDIR=`cd ${BASEDIR}/..;pwd`

LLAMA_AM_SERVER_HOME=${LLAMA_AM_SERVER_HOME:=${BASEDIR}}

if [ -f ${BASEDIR}/libexec/llama-env.sh ]
then
  source ${BASEDIR}/libexec/llama-env.sh
fi

LLAMA_AM_SERVER_CONF=${LLAMA_AM_SERVER_CONF:=${LLAMA_AM_SERVER_HOME}/conf}
LLAMA_AM_SERVER_LOG=${LLAMA_AM_SERVER_LOG:=${LLAMA_AM_SERVER_HOME}/log}

CLASSPATH="${LLAMA_AM_SERVER_CONF}"
for i in "${BASEDIR}/lib/"*.jar; do
  CLASSPATH="${CLASSPATH}:$i"
done
CLASSPATH="${LLAMA_AM_SERVER_CLASSPATH}:${CLASSPATH}"

if [ "$1" = "--verbose" ];
then
  echo "HADOOP                    : `which hadoop`"
  echo "LLAMA_AM_SERVER_HOME      : ${LLAMA_AM_SERVER_HOME}"
  echo "LLAMA_AM_SERVER_CONF      : ${LLAMA_AM_SERVER_CONF}"
  echo "LLAMA_AM_SERVER_LOG       : ${LLAMA_AM_SERVER_LOG}"
  echo "LLAMA_AM_SERVER_OPTS      : ${LLAMA_AM_SERVER_OPTS}"
  echo "LLAMA_AM_SERVER_CLASSPATH : ${LLAMA_AM_SERVER_CLASSPATH}"
  echo "LLAMA CLASSPATH           : ${CLASSPATH}"
fi

export HADOOP_USER_CLASSPATH_FIRST=true
export HADOOP_CLASSPATH="${HADOOP_CLASSPATH}:${CLASSPATH}"
export HADOOP_CLIENT_OPTS="${HADOOP_CLIENT_OPTS} ${LLAMA_AM_SERVER_OPTS}"
export HADOOP_CLIENT_OPTS="${HADOOP_CLIENT_OPTS} -Dllama.server.conf.dir=${LLAMA_AM_SERVER_CONF} -Dllama.server.log.dir=${LLAMA_AM_SERVER_LOG}"
exec $HADOOP_HOME/bin/hadoop com.cloudera.llama.am.LlamaAMMain$Service
