#!/usr/bin/env bash
set -e

CDPATH=""
SCRIPT="$0"

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

HDATA_HOME=$(cd "$(dirname "$SCRIPT")/.."; pwd)
HDATA_LIB_DIR=$HDATA_HOME/lib
HDATA_CONF_DIR=$HDATA_HOME/conf

if [ -x "$JAVA_HOME/bin/java" ]; then
    JAVA="$JAVA_HOME/bin/java"
else
    JAVA=$(which java)
fi

if [ ! -x "$JAVA" ]; then
    echo "Could not find any executable java binary. Please install java in your PATH or set JAVA_HOME"
    exit 1
fi

HDATA_CLASSPATH_APPEND="$HDATA_CLASSPATH"
HDATA_CLASSPATH='.'

for f in $HDATA_LIB_DIR/*.jar; do
    HDATA_CLASSPATH="${HDATA_CLASSPATH}:$f";
done

if [ ! -z "$HDATA_CLASSPATH_APPEND" ]; then
    HDATA_CLASSPATH="${HDATA_CLASSPATH}:$HDATA_CLASSPATH_APPEND";
fi

JAVA_OPTS="$JAVA_OPTS -Xss256k"
JAVA_OPTS="$JAVA_OPTS -Xms1G -Xmx1G -Xmn512M"
JAVA_OPTS="$JAVA_OPTS -XX:+UseParNewGC"
JAVA_OPTS="$JAVA_OPTS -XX:+UseConcMarkSweepGC"
JAVA_OPTS="$JAVA_OPTS -XX:+CMSClassUnloadingEnabled"
JAVA_OPTS="$JAVA_OPTS -XX:+CMSParallelRemarkEnabled"
JAVA_OPTS="$JAVA_OPTS -XX:+DisableExplicitGC"
JAVA_OPTS="$JAVA_OPTS -XX:CMSInitiatingOccupancyFraction=75"
JAVA_OPTS="$JAVA_OPTS -XX:+UseCMSInitiatingOccupancyOnly"
JAVA_OPTS="$JAVA_OPTS -XX:+HeapDumpOnOutOfMemoryError"
JAVA_OPTS="$JAVA_OPTS -XX:SoftRefLRUPolicyMSPerMB=0"

JAVA_OPTS="$JAVA_OPTS -Dhdata.conf.dir=$HDATA_CONF_DIR"
JAVA_OPTS="$JAVA_OPTS -Dlog4j.configurationFile=file:///$HDATA_CONF_DIR/log4j2.xml"

MAIN_CLASS="com.github.stuxuhai.hdata.CliDriver"

exec "$JAVA" $JAVA_OPTS -cp "$HDATA_CLASSPATH" $MAIN_CLASS "$@"