#!/bin/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.

set -euo pipefail
trap 'echo Error in $0 at line $LINENO: $(cd "'$PWD'" && awk "NR == $LINENO" $0)' ERR

IMPALA_DATA=${IMPALA_HOME}/testdata/impala-data
TPC_H_DATA=${IMPALA_DATA}/tpch

SCALE_FACTOR=1
if [[ $# == 1 && $1 -gt 1 ]]
then
  SCALE_FACTOR=$1
  TPC_H_DATA=${TPC_H_DATA}${SCALE_FACTOR}
fi

TPC_H_HOME=${IMPALA_TOOLCHAIN}/tpc-h-${IMPALA_TPC_H_VERSION}
TPC_H_DBGEN=${TPC_H_HOME}/bin/dbgen

if [ ! -x ${TPC_H_DBGEN} ]; then
  echo "Could not find TPC-H data generator executable: ${TPC_H_DBGEN}"
  exit 1
fi

echo "Generating TPC-H data into ${TPC_H_DATA}"
# Delete any preexisting data or symlinks
# Need to change permissions to work around an old TPC-H data tarball that had a
# non-writable top-level directory when extracted.
chmod +w ${TPC_H_DATA} || true
rm -rf ${TPC_H_DATA}
mkdir -p ${TPC_H_DATA}
cd ${TPC_H_DATA}

if [ -t 1 ]
then
  # Output is terminal, show progress verbosely
  VERBOSITY='-v'
else
  VERBOSITY=''
fi

${TPC_H_DBGEN} ${VERBOSITY} -f -s ${SCALE_FACTOR}

# Impala expects each table to be in its own subdirectory.
for FILE in *.tbl; do
  FILE_DIR=${FILE%.tbl}
  mkdir -p ${FILE_DIR}
  mv ${FILE} ${FILE_DIR}
done