#!/bin/sh

MINIDUMP_DUMP="/mnt/app/exec/minidump_dump"
BACKTRACE_LOG_PATH="/mnt/log/system_server_files"
MAX_BT_FILE_COUNT=7

[ -e "${BACKTRACE_LOG_PATH}/bt_index" ] && {
    v=$(cat ${BACKTRACE_LOG_PATH}/bt_index)
    index=$(($v+0)) # convert to num
} || {
    index=0
    for i in $(seq 0 $((MAX_BT_FILE_COUNT-1))); do
      [ ! -e "${BACKTRACE_LOG_PATH}/bt_file${i}.txt" ] && {
        index=$i
        break
      }
    done
}

dmp_files=$(ls $BACKTRACE_LOG_PATH/*.dmp)
for dmp in $dmp_files; do
  [ "$index" -ge "$MAX_BT_FILE_COUNT" ] && index=0
  crash_utc_date_time=$(${MINIDUMP_DUMP} "${dmp}" 2>&1 | grep MDRawHeader -A 6 | awk '/time_date_stamp/{print $4" "$5}')
  process_name=$(${MINIDUMP_DUMP} "${dmp}" 2>&1 | awk '{a[NR]=$0;if(a[NR-1]~/Stream MD_LINUX_CMD_LINE/){print $0}}' | sed 's?./??g;s?\\0??g')
  thread_name=$(${MINIDUMP_DUMP} "${dmp}" 2>&1 | awk '{a[NR]=$0;if(a[NR-1]~/Stream MD_LINUX_PROC_STATUS/){print $2}}')
  thread_id=$(${MINIDUMP_DUMP} "${dmp}" 2>&1 | awk '{a[NR]=$0;if(a[NR-1]~/MDException/){if(a[NR]~/thread_id/){printf("%d", $3)}}}')
  exception_code=$(${MINIDUMP_DUMP} "${dmp}" 2>&1 | awk '{a[NR]=$0;if(a[NR-2]~/MDException/){if(a[NR]~/exception_code/){printf("%d", $3)}}}')
  crash_reason=$(kill -l "$exception_code")
  rm "${BACKTRACE_LOG_PATH}/bt_file${index}.txt" 2>/dev/null
  echo "write ${BACKTRACE_LOG_PATH}/bt_file${index}.txt"
  {
    echo "{"
    echo "  \"is_new\": true,"
    echo "  \"save_log\": true,"
    echo "  \"crash_signal\": \"$crash_reason\","
    echo "  \"process_name\": \"$process_name\","
    echo "  \"thread_id\": \"$thread_id\","
    echo "  \"thread_name\": \"$thread_name\","
    echo "  \"system_time_utc\": \"$crash_utc_date_time\","
    echo "  \"dmp_file\": \"$(basename "$dmp")\""
    echo "}"
  } >> "${BACKTRACE_LOG_PATH}/bt_file${index}.txt"
  tar -czf ${BACKTRACE_LOG_PATH}/bt_file${index}.dmp.tgz -C ${BACKTRACE_LOG_PATH} "$(basename "$dmp")" && rm -v "${dmp}"
  index=$((index+1))
  echo "$index" > ${BACKTRACE_LOG_PATH}/bt_index
done