#!/bin/bash

#
# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License").
# You may not use this file except in compliance with the License.
# A copy of the License is located at
#
#  http://aws.amazon.com/apache2.0
#
# or in the "license" file accompanying this file. This file 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.
#

# Script for running multiple Transfer manager benchmarks at the same time

usage() {
  echo "usage:"
  echo "    benchmark download|upload fs|tmpfs|no-op [<size>]"
  echo "example:"
  echo "    ./benchmark download fs"
  echo "    ./benchmark upload tmpfs"
  echo "    ./benchmark download fs 90GB"
}

# validate operation
if [[ -z "$1" ]]; then
  usage
  exit 1
fi

operation="$1"

if ([ "$operation" != download ] && [ "$operation" != upload ] && [ "$operation" != copy ]); then
  usage
  exit 1
fi

#validate location
if [[ -z "$2" ]]; then
  usage
  exit 1
fi

location_name="$2"
if ([ "$location_name" != fs ] && [ "$location_name" != tmpfs ] && [ "$location_name" != "no-op" ]); then
  usage
  exit 1
fi

if [ "$location_name" == fs ]; then
  location="/"
fi

if [ "$location_name" == tmpfs ]; then
  location="/dev/shm/"
fi

if [ ! -d result ]; then
  mkdir result
fi

sizes_str="1B 8MB+1 8MB-1 128MB 4GB 30GB"
versions_str="v1 v2 CRT java"
sizes=( $sizes_str )
versions=( $versions_str )

echo "===== TM PERF TEST SUITE - $operation - $location_name ====="

run_benchmark() {
  echo "Benchmark: $version - $size"
  result_file="$operation"_"$location_name"_"$version"_"$size".txt
  cmd="java -jar ../target/s3-benchmarks.jar \
            --key=$size \
            --operation=$operation \
            --bucket=do-not-delete-crt-s3-eu-west-1 \
            --partSizeInMB=8 \
            --maxThroughput=100.0 \
            --iteration=8 \
            --version=$version \
            --readBufferInMB=3072"
  if [[ -n $location ]]
  then
    cmd="$cmd --file=$location$size"
  fi
            
  echo "$cmd" | sed 's/ \{1,\}/ /g' > "result/$result_file"
  $cmd | tee -a "result/$result_file"
  echo "Benchmark done"
}

for (( i = 0; i < "${#versions[@]}"; i++ ))
do
  version="${versions[$i]}"
  if [ ! -z "$3" ]
  then
    size="$3"
    run_benchmark
  else
    for (( j = 0; j < "${#sizes[@]}"; j++ ))
    do
      size="${sizes[$j]}"
      run_benchmark
    done
  fi
done