#!/usr/bin/env bash
# Run loop at specific interval
set -x

# convert 10 seconds to microseconds
LOOP_REPEAT_MICROSECONDS=$((10*1000000))

while :;do
  START_MICROS=${EPOCHREALTIME/./}
  RANDOMSLEEP=${RANDOM}
  while [ $RANDOMSLEEP  -gt 11 ];do
    RANDOMSLEEP=$((RANDOMSLEEP/3))
  done
  sleep $RANDOMSLEEP
  ELAPSED_MICROS=$((${EPOCHREALTIME/./}-START_MICROS))
  if [ $ELAPSED_MICROS -ge $LOOP_REPEAT_MICROSECONDS ];then
    echo "Loop exceeded interval, no time to sleep!"
    continue
  else
    SLEEP_TIME_MICROS=$((LOOP_REPEAT_MICROSECONDS-ELAPSED_MICROS))
    SLEEP_TIME_SECONDS=$(bc -l <<< "scale=2;$SLEEP_TIME_MICROS / 1000000")
    sleep "$SLEEP_TIME_SECONDS"
  fi
done