load test threshold checking

function check_thresholds(){
  FILE=$1
  THRESHOLDS=$2

  failed=0
  if ! [ -z "$THRESHOLDS" ]; then
    IFS=","
    for pair in $THRESHOLDS; do
      echo "checking if $pair ..."
      echo $pair | grep "<" > /dev/null && use_lt=1 || use_lt=0
      [ $use_lt -eq 1 ] && delim="<" || delim=">"
      key=$(echo $pair | cut -d $delim -f 1)  # column name
      t_val=$(echo $pair | cut -d $delim -f 2)  # threshold value
      val=$(cat $FILE | csvcut -c "$key" | tail -1)  # actual value
      [ "$val" == "N/A" ] && echo "ERROR: value for $key is N/A" && failed=1 && continue
      val=${val/\.*}  # convert floats to ints (round down)
      if [ $use_lt -eq 1 ]; then
        [ $val -lt $t_val ] || { echo "FAILED: value $val for field $key was expected to be less than threshold of $t_val" && failed=1; }
      else
        [ $val -gt $t_val ] || { echo "FAILED: value $val for field $key was expected to be greater than threshold of $t_val" && failed=1; }
      fi
    done
  fi

  return $failed
}

check_thresholds stats.csv "Requests/s>10,98%<20"
check_thresholds stats2.csv "Requests/s>10,98%<20"