test(unitproc):bkFreqWrite:Rewrote script to use while read

[BK-2020-03.git] / unitproc / bkFreqWrite

diff --git a/unitproc/bkFreqWrite b/unitproc/bkFreqWrite
index 277396efa65b89bc1c58e0b396e22479a85f1a22..cec372e5b8a204602dc5a243d1c1fc0f0cefc90b 100644 (file)
--- a/unitproc/bkFreqWrite
+++ b/unitproc/bkFreqWrite
@@ -1,4 +1,35 @@
 #!/bin/bash
 # Desc: Writes stdin to disk every 5 minutes
 
+yell() { echo "[$(date --iso-8601=ns)]:$0: $*" >&2; }      #o Yell, Die, Try Three-Fingered Claw technique
+die() { yell "$*"; exit 111; }     #o Ref/Attrib: https://stackoverflow.com/a/25515370
+try() { "$@" || die "cannot $*"; } #o
 
+declare -a buffer # Initialize buffer array
+scriptTTL="15";
+bufferTTL="5";
+
+magicWriteBuffer() {
+    printf "%s\n" "${buffer[@]}" >> /dev/shm/$(date +%s)..bkFreqWrite-output.txt;
+}
+
+bufferRound=0
+# Run until script TTL seconds pass
+while [[ $SECONDS -lt "scriptTTL" ]]; do
+    bufferTOD="$((SECONDS + $bufferTTL))";
+    lineCount=0
+    # Start and fill buffer until buffer time-of-death (TOD) arrives
+    while read -r line && [[ $SECONDS -lt "$bufferTOD" ]]; do
+       # Append line to buffer
+       buffer+=("$line");
+       echo "Processing line:$lineCount";
+       echo "Current line   :$line";
+       echo "buf elem count :${#buffer[@]}";
+       ((lineCount++));
+    done;
+    # Export buffer to asynchronous processing.
+    magicWriteBuffer &
+    unset buffer;
+    # Increment buffer round
+    ((bufferRound++));
+done;