#!/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
. $IMPALA_HOME/bin/report_build_error.sh
setup_report_build_error

IMPALA_DATA=${IMPALA_HOME}/testdata/impala-data
TPC_DS_DATA=${IMPALA_DATA}/tpcds

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

TPC_DS_DIRNAME=tpc-ds-${IMPALA_TPC_DS_VERSION}
TPC_DS_HOME=${IMPALA_TOOLCHAIN}/${TPC_DS_DIRNAME}

echo "Generating TPC-DS data into ${TPC_DS_DATA}"
# Delete any preexisting data or symlinks
rm -rf ${TPC_DS_DATA}
mkdir -p ${TPC_DS_DATA}
cd ${TPC_DS_DATA}

# dsdgen uses fixed size buffers that cause bizarre issues if the path to the
# binary is too long. Workaround by symlinking.
rm -f ${TPC_DS_DIRNAME}
ln -s ${TPC_DS_HOME} ${TPC_DS_DIRNAME}
TPC_DS_DSDGEN=${TPC_DS_DIRNAME}/bin/dsdgen

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

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

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