#!/bin/bash

set -e -o pipefail

ES_HOME=/usr/share/elasticsearch

# now set the classpath
ES_CLASSPATH="$ES_HOME/lib/*"

# now set the path to java
ES_JAVA_HOME=${ES_JAVA_HOME:-/usr/lib/jvm/default-runtime}
JAVA="$ES_JAVA_HOME/bin/java"
JAVA_TYPE="ES_JAVA_HOME"

if [ ! -x "$JAVA" ]; then
  echo "could not find java in $JAVA_TYPE at $JAVA" >&2
  exit 1
fi

# do not let JAVA_TOOL_OPTIONS slip in (as the JVM does by default)
if [ ! -z "$JAVA_TOOL_OPTIONS" ]; then
  echo "warning: ignoring JAVA_TOOL_OPTIONS=$JAVA_TOOL_OPTIONS"
  unset JAVA_TOOL_OPTIONS
fi

# warn that we are not observing the value of JAVA_HOME
if [ ! -z "$JAVA_HOME" ]; then
  echo "warning: ignoring JAVA_HOME=$JAVA_HOME; using $JAVA_TYPE" >&2
fi

# JAVA_OPTS is not a built-in JVM mechanism but some people think it is so we
# warn them that we are not observing the value of $JAVA_OPTS
if [ ! -z "$JAVA_OPTS" ]; then
  echo -n "warning: ignoring JAVA_OPTS=$JAVA_OPTS; "
  echo "pass JVM parameters via ES_JAVA_OPTS"
fi

if [[ "$("$JAVA" -version 2>/dev/null)" =~ "Unable to map CDS archive" ]]; then
  XSHARE="-Xshare:off"
else
  XSHARE="-Xshare:auto"
fi

# check the Java version
"$JAVA" "$XSHARE" -cp "$ES_CLASSPATH" org.elasticsearch.tools.java_version_checker.JavaVersionChecker

export HOSTNAME=$HOSTNAME

ES_PATH_CONF=${ES_PATH_CONF:-/etc/elasticsearch}

ES_DISTRIBUTION_FLAVOR=default
ES_DISTRIBUTION_TYPE=rpm
ES_BUNDLED_JDK=false

if [ -z "$ES_TMPDIR" ]; then
  ES_TMPDIR=`"$JAVA" -cp "$ES_CLASSPATH" org.elasticsearch.tools.launchers.TempDirectory`
fi

cd "$ES_HOME"