#!/bin/bash

# Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
# or more contributor license agreements. Licensed under the Elastic License;
# you may not use this file except in compliance with the Elastic License.

SCRIPT="$0"

# SCRIPT may be an arbitrarily deep series of symlinks. Loop until we have the concrete path.
while [ -h "$SCRIPT" ] ; do
  ls=`ls -ld "$SCRIPT"`
  # Drop everything prior to ->
  link=`expr "$ls" : '.*-> \(.*\)$'`
  if expr "$link" : '/.*' > /dev/null; then
    SCRIPT="$link"
  else
    SCRIPT=`dirname "$SCRIPT"`/"$link"
  fi
done

# determine elasticsearch home
ES_HOME=`dirname "$SCRIPT"`/../..

# make ELASTICSEARCH_HOME absolute
ES_HOME=`cd "$ES_HOME"; pwd`

# If an include wasn't specified in the environment, then search for one...
if [ "x$ES_INCLUDE" = "x" ]; then
    # Locations (in order) to use when searching for an include file.
    for include in /usr/share/elasticsearch/elasticsearch.in.sh \
                   /usr/local/share/elasticsearch/elasticsearch.in.sh \
                   /opt/elasticsearch/elasticsearch.in.sh \
                   ~/.elasticsearch.in.sh \
                   "`dirname "$0"`"/../elasticsearch.in.sh \
                   "$ES_HOME/bin/elasticsearch.in.sh"; do
        if [ -r "$include" ]; then
            . "$include"
            break
        fi
    done
# ...otherwise, source the specified include.
elif [ -r "$ES_INCLUDE" ]; then
    . "$ES_INCLUDE"
fi

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

if [ -z "$ES_CLASSPATH" ]; then
    echo "You must set the ES_CLASSPATH var" >&2
    exit 1
fi

if [ -z "$CONF_DIR" ]; then
    # Try to read package config files
    if [ -f "/etc/sysconfig/elasticsearch" ]; then
        CONF_DIR=/etc/elasticsearch

        . "/etc/sysconfig/elasticsearch"
    elif [ -f "/etc/default/elasticsearch" ]; then
        CONF_DIR=/etc/elasticsearch

       . "/etc/default/elasticsearch"
    fi
fi

export HOSTNAME=`hostname -s`

# include x-pack jars in classpath
ES_CLASSPATH="$ES_CLASSPATH:$ES_HOME/plugins/x-pack/*"

# don't let JAVA_TOOL_OPTIONS slip in (e.g. crazy agents in ubuntu)
# works around https://bugs.launchpad.net/ubuntu/+source/jayatana/+bug/1441487
if [ "x$JAVA_TOOL_OPTIONS" != "x" ]; then
    echo "Warning: Ignoring JAVA_TOOL_OPTIONS=$JAVA_TOOL_OPTIONS"
    echo "Please pass JVM parameters via ES_JAVA_OPTS instead"
    unset JAVA_TOOL_OPTIONS
fi

# CONF_FILE setting was removed
if [ ! -z "$CONF_FILE" ]; then
    echo "CONF_FILE setting is no longer supported. elasticsearch.yml must be placed in the config directory and cannot be renamed."
    exit 1
fi

declare -a args=("$@")

if [ -e "$CONF_DIR" ]; then
  args=("${args[@]}" --path.conf "$CONF_DIR")
fi

cd "$ES_HOME" > /dev/null
"$JAVA" $ES_JAVA_OPTS -cp "$ES_CLASSPATH" -Des.path.home="$ES_HOME" org.elasticsearch.xpack.security.authc.esnative.ESNativeRealmMigrateTool "${args[@]}"
status=$?
cd - > /dev/null
exit $status