ansible/roles/terraria/templates/backup.sh

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#! /bin/bash
#
# terraria.sh
# Backup script for Gitea. Meant to be sourced by our main backup script
# Copyright (C) 2020 Vintage Salt <rehashedsalt@cock.li>
#
# Distributed under terms of the MIT license.
#
set -e
export TERRARIADIR="{{ terraria_root }}/{{ terraria_name }}"
export OUTDIR="$TERRARIADIR/backups"
retention=144 # 30-minute intervals, 3 days
# Helper functions
log() {
[ -z "$1" ] && return 1
printf "$(date -Iseconds): $1\n"
}
# Sanity checks
if ! [ -d "$OUTDIR" ]; then
if ! mkdir "$OUTDIR"; then
log "Unable to find or create output directory: $OUTDIR"
return 2
fi
fi
# Enforce permissions on our output directory since the terraria user will need them
chown terraria.ter-admin "$OUTDIR"
chmod 770 "$OUTDIR"
# Purge oldest backup if we need to
currentbackupcount="$(ls -1 "$OUTDIR" | wc -l)"
if (( currentbackupcount >= retention )); then
lastbackup="$(find "$OUTDIR" -name \*.zip 2>/dev/null | sort | head -n 1)"
if [ -f "$lastbackup" ]; then
log "Removing old backup: $lastbackup"
rm "$lastbackup"
fi
fi
# WE MAKE BACKUP NOW SERGEI
if cd "$OUTDIR"; then
log "Initiating terraria dump"
su terraria -c "cp \"$TERRARIADIR/worlds/world.wld\" \"$OUTDIR/world-$(date -Iseconds).wld\""
else
log "Could not change directory: $OUTDIR"
return 3
fi