#!/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.
#

# 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

STORM_BIN_DIR=`dirname ${PRG}`
export STORM_BASE_DIR=`cd ${STORM_BIN_DIR}/..;pwd`
export STORM_CONF_DIR="${STORM_CONF_DIR:-$STORM_BASE_DIR/conf}"

if [ -f "${STORM_CONF_DIR}/storm-env.sh" ]; then
  . "${STORM_CONF_DIR}/storm-env.sh"
fi

STORM_JAAS_CONF_PARAM=""
JAAS_FILE="${STORM_CONF_DIR}/storm_jaas.conf"
if [ -f $JAAS_FILE ]; then
  STORM_JAAS_CONF_PARAM="-Djava.security.auth.login.config=${JAAS_FILE}"
fi
# Which java to use
if [ -z "$JAVA_HOME" ]; then
  JAVA="java"
else
  JAVA="$JAVA_HOME/bin/java"
fi
exec $JAVA $STORM_JAAS_CONF_PARAM $STORM_JAR_JVM_OPTS -cp "$STORM_BASE_DIR/lib-tools/storm-kafka-monitor/*" org.apache.storm.kafka.monitor.KafkaOffsetLagUtil "$@"