shell_structured_logging_jq.sh

__timestamp(){
  date "+%Y%m%dT%H%M%S"
}
__log(){
  log_level="$1"
  message="$2"
  echo '{}' | \
  jq  --monochrome-output \
      --compact-output \
      --raw-output \
      --arg timestamp "$(__timestamp)" \
      --arg log_level "$log_level" \
      --arg message "$message" \
      '.timestamp=$timestamp|.log_level=$log_level|.message=$message'
}
__log "INFO" "Hello, World!"