#!/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.

bin=`dirname "$0"`
myhome=`cd "$bin/.."; pwd`
RUN_CONFIG_TOOL=0

# the root of the Hive installation
if [[ -z $SENTRY_HOME ]] ; then
  export SENTRY_HOME=$myhome
fi

# check for hadoop in the path
HADOOP_IN_PATH=`which hadoop 2>/dev/null`
if [ -f ${HADOOP_IN_PATH} ]; then
  HADOOP_DIR=`dirname "$HADOOP_IN_PATH"`/..
fi
# HADOOP_HOME env variable overrides hadoop in the path
HADOOP_HOME=${HADOOP_HOME:-${HADOOP_PREFIX:-$HADOOP_DIR}}
if [ "$HADOOP_HOME" == "" ]; then
  echo "Cannot find hadoop installation: \$HADOOP_HOME or \$HADOOP_PREFIX must be set or hadoop must be in the path";
  exit 4;
fi

HADOOP=$HADOOP_HOME/bin/hadoop
if [ ! -f ${HADOOP} ]; then
  echo "Cannot find hadoop installation: \$HADOOP_HOME or \$HADOOP_PREFIX must be set or hadoop must be in the path";
  exit 4;
fi

# If we are running config-tool then invoke it via separate script. It needs Hive classpatch and config
args=()
while [ $# -gt 0 ]; do    # Until you run out of parameters . . .
  case "$1" in
    --command)
      if [ "$2" = "config-tool" ]
      then
        RUN_CONFIG_TOOL=1
      fi
      args+=" $1"
      shift
      ;;
    *)
      args+=" $1"
      shift
      ;;
  esac
done

export _CMD_JAR=sentry-core-common-*.jar
for f in ${SENTRY_HOME}/lib/*.jar; do
  HADOOP_CLASSPATH=${HADOOP_CLASSPATH}:${f}
done
export HADOOP_CLASSPATH
export RUN_CONFIG_TOOL
if [ "${RUN_CONFIG_TOOL}" = "0" ]
then
  for f in ${SENTRY_HOME}/lib/server/*.jar; do
    HADOOP_CLASSPATH=${HADOOP_CLASSPATH}:${f}
  done
  for f in ${SENTRY_HOME}/lib/plugins/*.jar; do
    HADOOP_CLASSPATH=${HADOOP_CLASSPATH}:${f}
  done
  exec $HADOOP jar ${SENTRY_HOME}/lib/${_CMD_JAR} org.apache.sentry.SentryMain ${args[@]}
else
  exec ${SENTRY_HOME}/bin/config_tool ${args[@]}
fi