#!/bin/sh -e

RSYNC_HOST=merkel.debian.org
RSYNC_DIR=debian
TO=/home/ajt/scratch/debian-i386
MAX_DEL=1000

HOSTNAME=$(hostname -f)
LOCK="${TO}/Archive-Update-in-Progress-${HOSTNAME}"

if lockfile -! -l 43200 -r 0 "$LOCK"; then
  echo ${HOSTNAME} is unable to start rsync, lock file exists
  exit 1
fi
tmp=$(tempfile)

trap "rm -f $tmp $LOCK > /dev/null 2>&1" exit

rsync --links --hard-links --times --verbose --recursive --delay-updates \
	--files-from :indices/files/typical.files \
	rsync://$RSYNC_HOST/$RSYNC_DIR/ $TO/

(
    cd $TO
    find . \! -type d | sort -u > $tmp
    sort -u < indices/files/typical.files | diff $tmp - | sed -n 's/^< //p' |
        grep -v '^\./project/trace/' | head -n $MAX_DEL | xargs rm
    find -type d -empty | xargs rmdir
)

date -u > ${TO}/project/trace/${HOSTNAME}