#!/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`

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

export _CMD_JAR=${SENTRY_SHELL_JAR:-sentry-provider-db-*.jar}
for f in ${SENTRY_HOME}/lib/*.jar; do
  HADOOP_CLASSPATH=${HADOOP_CLASSPATH}:${f}
done
export HADOOP_CLASSPATH

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

args=()
# get the type argument for the command, and check use the shell for hive model or for generic model.
# todo: currently, supoort hive only, need add generic model support
while [ $# -gt 0 ]; do    # Until you run out of parameters . . .
  if [[ "$1" = "-t" || "$1" = "--type" ]]; then
    # currently, only support the hive model
    if ! [[ $2 =~ ^[H|h][I|i][V|v][E|e]$ ]]; then
      echo "Doesn't support the type $2!"
      exit 1
    fi
  fi
  args+=" $1"
  shift
done

exec $HADOOP jar ${SENTRY_HOME}/lib/${_CMD_JAR} org.apache.sentry.provider.db.tools.SentryShellHive ${args[@]}
