#! /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.

function main() {

  SOURCE="${BASH_SOURCE[0]}"
  while [ -h "${SOURCE}" ]; do
     bin="$( cd -P "$( dirname "${SOURCE}" )" && pwd )"
     SOURCE="$(readlink "${SOURCE}")"
     [[ "${SOURCE}" != /* ]] && SOURCE="${bin}/${SOURCE}"
  done
  # Set up variables needed by accumulo-env.sh
  export bin="$( cd -P "$( dirname "${SOURCE}" )" && pwd )"
  export basedir=$( cd -P "${bin}"/.. && pwd )
  export conf="${ACCUMULO_CONF_DIR:-${basedir}/conf}"
  export lib="${basedir}/lib"
  export cmd="$1"

  if [[ -z $conf || ! -d $conf ]]; then
    echo "$conf is not a valid directory.  Please make sure it exists"
    exit 1
  fi
  if [ ! -f "$conf/accumulo-env.sh" ]; then
    echo "accumulo-env.sh must exist in $conf"
    exit 1
  fi
  source "$conf/accumulo-env.sh"

  # Accumulo is moving away from these variables but they still might be needed
  export ACCUMULO_HOME="$basedir"
  export ACCUMULO_CONF_DIR="$conf"

  # Verify setting in accumulo-env.sh
  : "${JAVA_OPTS:?"variable is not set in accumulo-env.sh"}"
  : "${CLASSPATH:?"variable is not set in accumulo-env.sh"}"
  : "${ACCUMULO_LOG_DIR:?"variable is not set in accumulo-env.sh"}"
  mkdir -p "${ACCUMULO_LOG_DIR}" 2>/dev/null
  : "${MALLOC_ARENA_MAX:?"variable is not set in accumulo-env.sh"}"

  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 set java on your PATH or set JAVA_HOME"
    exit 1
  fi
  if [ -n "$ACCUMULO_JAVA_PREFIX" ]; then
    JAVA=($ACCUMULO_JAVA_PREFIX $JAVA)
  fi

  exec "${JAVA[@]}" "${JAVA_OPTS[@]}" org.apache.accumulo.start.Main "$@"
}

main "$@"