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[WIP] Add RCLONE as a backup type #8

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[WIP] Add RCLONE as a backup type #8

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47 changes: 42 additions & 5 deletions backup-loop.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,8 @@ if [ "${DEBUG:-false}" == "true" ]; then
fi

: "${SRC_DIR:=/data}"
: "${DEST_DIR:=/backups}"
: "${DESTINATION:="${DEST_DIR:-/backups}"}"
: "${RCLONE_REPOSITORY:="${DESTINATION}"}"
: "${BACKUP_NAME:=world}"
: "${INITIAL_DELAY:=2m}"
: "${BACKUP_INTERVAL:=${INTERVAL_SEC:-24h}}"
Expand All @@ -17,6 +18,7 @@ fi
: "${RCON_PASSWORD:=minecraft}"
: "${EXCLUDES:=*.jar,cache,logs}" # Comma separated list of glob(3) patterns
: "${LINK_LATEST:=false}"
: "${RCLONE_MULTIPATH:=true}"

export RCON_PORT
export RCON_PASSWORD
Expand Down Expand Up @@ -149,20 +151,20 @@ call_if_function_exists() {

tar() {
_find_old_backups() {
find "${DEST_DIR}" -maxdepth 1 -name "*.${backup_extension}" -mtime "+${PRUNE_BACKUPS_DAYS}" "${@}"
find "${DESTINATION}" -maxdepth 1 -name "*.${backup_extension}" -mtime "+${PRUNE_BACKUPS_DAYS}" "${@}"
}

init() {
mkdir -p "${DEST_DIR}"
mkdir -p "${DESTINATION}"
readonly backup_extension="tgz"
}
backup() {
ts=$(date -u +"%Y%m%d-%H%M%S")
outFile="${DEST_DIR}/${BACKUP_NAME}-${ts}.${backup_extension}"
outFile="${DESTINATION}/${BACKUP_NAME}-${ts}.${backup_extension}"
log INFO "Backing up content in ${SRC_DIR} to ${outFile}"
command tar "${excludes[@]}" -czf "${outFile}" -C "${SRC_DIR}" .
if [ "${LINK_LATEST^^}" == "TRUE" ]; then
ln -sf "${BACKUP_NAME}-${ts}.${backup_extension}" "${DEST_DIR}/latest.${backup_extension}"
ln -sf "${BACKUP_NAME}-${ts}.${backup_extension}" "${DESTINATION}/latest.${backup_extension}"
fi
}
prune() {
Expand Down Expand Up @@ -244,6 +246,41 @@ restic() {
call_if_function_exists "${@}"
}

rclone() {
_find_old_backups() {
command rclone lsf --format "tp" "${DESTINATION}/${BACKUP_NAME}*" | awk \
-v DESTINATION="${DESTINATION}" \
-v PRUNE_DATE="$(date '+%Y-%m-%d %H:%M:%S' --date="${PRUNE_BACKUPS_DAYS} days ago")" \
'BEGIN { FS=";" } $1 > PRUNE_DATE { printf "%s/%s\n", DESTINATION, $2 }'
}
init() {
if [ "${RCLONE_MULTIPATH,,}" != "true" ] && (( PRUNE_BACKUPS_DAYS > 0 )); then
log ERROR "Non-multipath RCLONE prunning is not supported"
exit 1
fi
}
backup() {
if [ "${RCLONE_MULTIPATH,,}" == "true" ]; then # TODO: Find a better name
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Yeah, I also feel like there's a better word than "mulitpath" but can only think of "additive" and "incremental" so far. Both of those are not quite right either since they imply different things in the context of backups.

local ts
ts="$(date -u +"%Y%m%d-%H%M%S")"
local out_dest="${DESTINATION}/${BACKUP_NAME}-${ts}"
else
local out_dest="${DESTINATION}"
fi
log INFO "Backing up content in ${SRC_DIR} to ${out_dest}"
command rclone "${excludes[@]}" "${SRC_DIR}" "${out_dest}"
}
prune() {
if [ -n "$(_find_old_backups)" ]; then
log INFO "Pruning backup files older than ${PRUNE_BACKUPS_DAYS} days"
_find_old_backups | tee \
>(awk '{ printf "Removing %s\n", $0 }' | log INFO) \
>(while read -r path; do command rclone purge "${path}"; done)
fi
}
call_if_function_exists "${@}"
}

##########
## main ##
##########
Expand Down