exec/bklog

   1 #!/bin/bash
   2 # Desc: Compresses, encrypts, and writes stdin every 5 seconds
   3
   4 yell() { echo "$0: $*" >&2; }      #o Yell, Die, Try Three-Fingered Claw technique
   5 die() { yell "$*"; exit 111; }     #o Ref/Attrib: https://stackoverflow.com/a/25515370
   6 try() { "$@" || die "cannot $*"; } #o
   7 declare -a buffer # Initialize buffer array
   8 scriptTTL="15";
   9 bufferTTL="5";
  10 magicWriteBuffer() {
  11     printf "%s\n" "${buffer[@]}" | cat | cat | cat >> /dev/shm/$(date +%s)..bkFreqWrite-output1.txt;
  12     printf "%s\n" "${buffer[@]}" | cat | cat | cat >> /dev/shm/$(date +%s)..bkFreqWrite-output2.txt;
  13     printf "%s\n" "${buffer[@]}" | cat | cat | cat >> /dev/shm/$(date +%s)..bkFreqWrite-output3.txt;
  14 }
  15
  16 bufferRound=0;
  17 # Run until script TTL seconds pass
  18 while [[ $SECONDS -lt "scriptTTL" ]]; do
  19     bufferTOD="$((SECONDS + $bufferTTL))";
  20     lineCount=0;
  21     # Consume stdin to fill buffer until buffer time-of-death (TOD) arrives
  22     while read -r -t "$bufferTTL" line && [[ $SECONDS -lt "$bufferTOD" ]]; do
  23         # Append line to buffer array
  24         buffer+=("$line");
  25         echo "DEBUG:Processing line:$lineCount";
  26         echo "DEBUG:Current line   :$line";
  27         echo "DEBUG:buf elem count :${#buffer[@]}";
  28         ((lineCount++));
  29     done;
  30     # Export buffer to asynchronous processing.
  31     magicWriteBuffer &
  32     unset buffer; # Clear buffer array for next bufferRound
  33     # Increment buffer round
  34     ((bufferRound++));
  35 done;
  36
  37 # Author: Steven Baltakatei Sandoval
  38 # License: GPLv3+