#!/bin/bash
#
# Update and repack an Android Build seed tarball.
# This is intended to be run from a crontab, once a week or so
# (takes ~1hr to run, produces ~15Gb tarball as of writing).
#

set -e

CHECKOUT_DIR=/mnt/seed
SCRATCH_DIR=/mnt/seed
OUT_DIR=/mnt2/seed
SEED=$1

cd $CHECKOUT_DIR/$SEED

export TIMEFORMAT="TIME: repo sync: %lR"
time repo sync --quiet -j2 -f
unset TIMEFORMAT

cd $CHECKOUT_DIR

export TIMEFORMAT="TIME: Creating new seed tarball: %lR"
time tar c $SEED/ | gzip -c -1 >$SCRATCH_DIR/$SEED.tar.gz.new
unset TIMEFORMAT

[ -f $OUT_DIR/$SEED.tar.gz ] && mv $OUT_DIR/$SEED.tar.gz $SCRATCH_DIR/$SEED.tar.gz.old
rm -f $OUT_DIR/$SEED.tar.gz.old
ln -s $SCRATCH_DIR/$SEED.tar.gz.old $OUT_DIR/$SEED.tar.gz.old
mv $SCRATCH_DIR/$SEED.tar.gz.new $OUT_DIR/$SEED.tar.gz