drand.get-tty-activity

#!/bin/sh -eu

readonly LOGS_DIR=data/logs
readonly CURSOR_FILE=$LOGS_DIR/drand.c4dt.org-cursor

cursor=`cat $CURSOR_FILE || :`
[ -n "$cursor" ] && cursor="--after-cursor $cursor"

activity=$(
	ssh drand@drand.c4dt.org /usr/bin/sudo /usr/bin/journalctl --output export --show-cursor $cursor |
	    awk --assign "CURSOR_FILE=$CURSOR_FILE" '
		/^-- cursor:/ {print substr($0, 12) >CURSOR_FILE}
		{print}' |
	    /lib/systemd/systemd-journal-remote --output "$LOGS_DIR/drand.c4dt.org.journal" - 2>&1 |
	    tail -n1 | cut -d ' ' -f 4
)

touch --date='1 month ago' "$LOGS_DIR/barrier"
find "$LOGS_DIR" -not -newer "$LOGS_DIR/barrier" -delete

echo $activity