420 lines
11 KiB
Bash
420 lines
11 KiB
Bash
#!/usr/bin/env bash
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set -euo pipefail
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# Injected by Nix
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RSYNC_BIN="@RSYNC_BIN@"
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DATA_DIR="@DATA_DIR@"
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MCSTATUS_BIN="@MCSTATUS_BIN@"
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MCRCON_BIN="@MCRCON_BIN@"
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AWK_BIN="@AWK_BIN@"
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QUERY_PORT="@QUERY_PORT@"
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RCON_PORT="@RCON_PORT@"
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RCON_PASSWORD="@RCON_PASSWORD@"
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SERVER_NAME="@SERVER_NAME@"
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TAR_BIN="@TAR_BIN@"
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ZIP_BIN="@ZIP_BIN@"
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UNZIP_BIN="@UNZIP_BIN@"
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GZIP_BIN="@GZIP_BIN@"
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ZSTD_BIN="@ZSTD_BIN@"
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PV_BIN="@PV_BIN@"
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DU_BIN="@DU_BIN@"
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BZIP2_BIN="@BZIP2_BIN@"
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XZ_BIN="@XZ_BIN@"
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# Convenience wrappers
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rsync_cmd="$RSYNC_BIN"
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awk_cmd="$AWK_BIN"
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mcstatus_cmd="$MCSTATUS_BIN 127.0.0.1:${QUERY_PORT}"
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mcrcon_cmd="$MCRCON_BIN -H 127.0.0.1 -P ${RCON_PORT} -p ${RCON_PASSWORD}"
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tar_cmd="$TAR_BIN"
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zip_cmd="$ZIP_BIN"
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unzip_cmd="$UNZIP_BIN"
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gzip_cmd="$GZIP_BIN"
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zstd_cmd="$ZSTD_BIN"
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pv_cmd="$PV_BIN"
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du_cmd="$DU_BIN"
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bzip2_cmd="$BZIP2_BIN"
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xz_cmd="$XZ_BIN"
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# PATH extension
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# (only figured that out later if you add it here it can actually just use the bin)
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# So you can easily just switch out the "*_cmd" with the "normal" name
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export PATH="$(dirname "$GZIP_BIN")":"$(dirname "$ZSTD_BIN")":"$(dirname "$PV_BIN")":"$(dirname "$DU_BIN")":"$(dirname "$BZIP2_BIN")":"$(dirname "$XZ_BIN")":"$PATH"
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# Defaults
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REBOOT=false
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SLEEP_TIME=0
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FULL=false
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DESTINATION="/srv/minecraft/backups/unknown"
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PURE=false
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FORMAT="tar"
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COMPRESSION="gzip"
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# Usage
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usage() {
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cat <<EOF
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Usage: $0 [--reboot] [--sleep <seconds>] [--full] [--destination <path>] [--pure]
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[--format <tar|zip>] [--compression <gzip|bzip2|xz|zstd>]
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--reboot Stop server before backup and start afterwards [DOES NOT WORK]
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--sleep N Wait N seconds with countdown announcements
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--full Backup entire server directory (default: world only)
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--destination X Backup target directory (default: /srv/minecraft/backups/unknown)
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--pure Use rsync to copy files (no compression, symlinks resolved)
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--format X Archive format: tar or zip (ignored if --pure)
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--compression X Compression for tar (default: gzip)
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EOF
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exit 1
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}
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# Argument parsing
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echo "[DEBUG] Parsing command-line arguments..."
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while [[ $# -gt 0 ]]; do
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case "$1" in
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--reboot) echo "[DEBUG] Flag: --reboot"; REBOOT=true; shift ;;
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--sleep) echo "[DEBUG] Flag: --sleep $2"; SLEEP_TIME="$2"; shift 2 ;;
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--full) echo "[DEBUG] Flag: --full"; FULL=true; shift ;;
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--destination) echo "[DEBUG] Flag: --destination $2"; DESTINATION="$2"; shift 2 ;;
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--pure) echo "[DEBUG] Flag: --pure"; PURE=true; shift ;;
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--format) echo "[DEBUG] Flag: --format $2"; FORMAT="$2"; shift 2 ;;
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--compression) echo "[DEBUG] Flag: --compression $2"; COMPRESSION="$2"; shift 2 ;;
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--help) usage ;;
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*) echo "[ERROR] Unknown option: $1"; usage ;;
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esac
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done
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# Restart if rebooting
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if [[ "$REBOOT" == true ]]; then
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echo "[DEBUG] Restarting server does not work"
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echo "[DEBUG] The sudo can't be enabled due to it not being used by the same path as for the systemd"
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echo "[DEBUG] and just using systemctl won't work either due to it not having the rights to stop it"
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echo "[DEBUG] if you fix this pls make a PR"
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fi
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# Helpers
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say_with_color() {
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local color="$1"
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shift
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local message="$*"
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local code
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case "$color" in
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black) code="§0" ;;
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dark_blue) code="§1" ;;
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dark_green) code="§2" ;;
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dark_aqua) code="§3" ;;
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dark_red) code="§4" ;;
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dark_purple) code="§5" ;;
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gold) code="§6" ;;
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gray) code="§7" ;;
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dark_gray) code="§8" ;;
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blue) code="§9" ;;
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green) code="§a" ;;
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aqua) code="§b" ;;
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red) code="§c" ;;
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light_purple|pink) code="§d" ;;
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yellow) code="§e" ;;
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white) code="§f" ;;
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obfuscated) code="§k" ;;
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bold) code="§l" ;;
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strikethrough) code="§m" ;;
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underline) code="§n" ;;
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italic) code="§o" ;;
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reset) code="§r" ;;
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*) code="" ;;
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esac
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local full_message="${code}${message}§r"
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# echo "[DEBUG] Sending RCON say: $full_message"
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$mcrcon_cmd "say $full_message"
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}
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say() {
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echo "[INFO] $1"
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say_with_color yellow "$1"
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}
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countdown() {
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local seconds="$1"
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#echo "[DEBUG] Starting countdown of $seconds seconds..."
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say "Backup will start in $seconds seconds"
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while [ "$seconds" -gt 0 ]; do
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#echo " $seconds"
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# Logic for when to speak updates
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if [ "$seconds" -le 15 ]; then
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say "$seconds"
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elif [ "$seconds" -le 60 ] && (( seconds % 10 == 0 )); then
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say "$seconds seconds remaining"
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elif [ "$seconds" -le 120 ] && (( seconds % 30 == 0 )); then
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say "$seconds seconds remaining"
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elif [ "$seconds" -le 300 ] && (( seconds % 60 == 0 )); then
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say "$seconds seconds remaining"
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fi
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sleep 1
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((seconds--))
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done
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echo
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say "Countdown finished. Starting backup now."
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}
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do_backup() {
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#echo "[DEBUG] Entering do_backup with args: $*"
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local source=""
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local destination=""
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local compression="gzip"
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local format="tar"
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local pure=false
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# parse args
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while [[ $# -gt 0 ]]; do
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case "$1" in
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--source) source="$2"; shift 2 ;;
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--destination) destination="$2"; shift 2 ;;
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--compression) compression="$2"; shift 2 ;;
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--format) format="$2"; shift 2 ;;
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--pure) pure=true; shift ;;
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*) echo "[ERROR] Unknown option to do_backup: $1"; return 1 ;;
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esac
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done
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if [[ -z "$source" || -z "$destination" ]]; then
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echo "[ERROR] Missing --source or --destination"
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return 1
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fi
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local timestamp="$(date +%Y%m%d-%H%M%S)"
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local full_source="$DATA_DIR/$source"
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local basename="$(basename "$source")"
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local archive=""
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local ext=""
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if [[ ! -d "$full_source" ]]; then
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echo "[ERROR] Source directory not found: $full_source"
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return 1
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fi
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mkdir -p "$destination"
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if [[ "$pure" == true ]]; then
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local target_dir="$destination/${basename}-${timestamp}"
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echo "[INFO] Performing pure rsync backup to $target_dir"
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echo "#####"
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local last_percentage=-1
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"$rsync_cmd" -rptgoDL --delete --info=progress2 --stats \
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"$full_source/" "$target_dir/" 2>&1 | \
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while IFS= read -r -d $'\r' chunk; do
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# Extract percentage
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if [[ $chunk =~ ([0-9]{1,3})% ]]; then
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current_percentage=${BASH_REMATCH[1]}
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# Print only if percentage changed
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if [[ $current_percentage -ne $last_percentage ]]; then
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echo -e "Progress: ${current_percentage}%\r" | say "$@"
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last_percentage=$current_percentage
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fi
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fi
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done
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return 0
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fi
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#echo "[DEBUG] Using archive mode: format=$format compression=$compression"
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# Archive/compression backup
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case "$format" in
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tar)
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# Map compression → extension and tar invocation (using only *_cmd vars)
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case "$compression" in
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none)
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ext="tar"
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tar_create=( "$tar_cmd" -cvf )
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;;
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gzip)
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ext="tar.gz"
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tar_create=( "$tar_cmd" --use-compress-program="$gzip_cmd" -cvf )
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;;
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bzip2)
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ext="tar.bz2"
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tar_create=( "$tar_cmd" --use-compress-program="$bzip2_cmd" -cvf )
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;;
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xz)
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ext="tar.xz"
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tar_create=( "$tar_cmd" --use-compress-program="$xz_cmd" -cvf )
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;;
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zstd)
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ext="tar.zst"
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tar_create=( "$tar_cmd" --use-compress-program="$zstd_cmd" -cvf )
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;;
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*)
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echo "[ERROR] Unsupported tar compression: $compression" >&2
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exit 1
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;;
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esac
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archive="$destination/${basename}-${timestamp}.${ext}"
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sources=( $source )
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for s in "${sources[@]}"; do
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if [[ ! -e "$DATA_DIR/$s" ]]; then
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echo "[ERROR] Source not found under DATA_DIR: $DATA_DIR/$s" >&2
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exit 1
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fi
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done
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# Count total items for progress (files + dirs)
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total_items=0
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for s in "${sources[@]}"; do
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count=$(find "$DATA_DIR/$s" | wc -l)
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total_items=$(( total_items + count ))
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done
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current=0
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echo "[INFO] Creating $archive"
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last_percent=-1
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last_info_time=$(date +%s)
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# seconds between info logs
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interval=2
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(
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"${tar_create[@]}" "$archive" -C "$DATA_DIR" "${sources[@]}"
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) 2>&1 | while read -r line; do
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if [[ -n "$line" ]]; then
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current=$(( current + 1 ))
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if (( total_items > 0 )); then
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percent=$(( current * 100 / total_items ))
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# echo full percent:
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#echo "[DEBUG] Progress: ${percent}%"
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now=$(date +%s)
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if (( percent != last_percent )) && (( now - last_info_time >= interval )); then
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#echo "[INFO] Progress: ${percent}%"
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say "Progress: ${percent}%"
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last_percent=$percent
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last_info_time=$now
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fi
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fi
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fi
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done
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# Ensure 100% gets printed once at the end
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if (( last_percent < 100 )); then
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#echo "[INFO] Progress: 100%"
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say "Progress: 100%"
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fi
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echo "[INFO] Tar archive created: $archive"
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;;
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zip)
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ext="zip"
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archive="$destination/${basename}-${timestamp}.${ext}"
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echo "[INFO] Creating zip archive $archive"
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# Count both files and directories
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total_items=$(find "$DATA_DIR/$source" | wc -l)
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current=0
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last_percent=-1
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last_info_time=$(date +%s)
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interval=2 # seconds between info logs
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(
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cd "$DATA_DIR"
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"$zip_cmd" -r "$archive" "$source"
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) 2>&1 | while read -r line; do
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if [[ $line =~ adding: ]]; then
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current=$((current+1))
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if (( total_items > 0 )); then
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percent=$(( current * 100 / total_items ))
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#echo "[DEBUG] Progress: ${percent}%"
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now=$(date +%s)
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if (( percent != last_percent )) && (( now - last_info_time >= interval )); then
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#echo "[INFO] Progress: ${percent}%"
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say "Progress: ${percent}%"
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last_percent=$percent
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last_info_time=$now
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fi
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fi
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fi
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done
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# Ensure 100% gets printed once at the end
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if (( last_percent < 100 )); then
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#echo "[INFO] Progress: 100%"
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say "Progress: 100%"
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fi
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echo "[INFO] Zip archive created: $archive"
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;;
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*)
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echo "[ERROR] Unsupported format: $format"
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return 1
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;;
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esac
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echo "[INFO] Backup completed: $archive"
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return 0
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}
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# MAIN
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#echo "[DEBUG] FULL=$FULL"
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if [[ "$FULL" == true ]]; then
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BACKUP_SOURCE="${SERVER_NAME}"
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BACKUP_MODE="full server directory"
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DESTINATION="${DESTINATION}/Full"
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else
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BACKUP_SOURCE="${SERVER_NAME}/world"
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BACKUP_MODE="world folder only"
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DESTINATION="${DESTINATION}/World"
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fi
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say "Backup for ($BACKUP_MODE) initiated"
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# Pre-backup wait
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if (( SLEEP_TIME > 0 )); then
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countdown "$SLEEP_TIME"
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fi
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mkdir -p "$DESTINATION"
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echo "[INFO] Running backup of $BACKUP_MODE to $DESTINATION..."
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if do_backup \
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--source "$BACKUP_SOURCE" \
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--destination "$DESTINATION" \
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$([[ "$PURE" == true ]] && echo "--pure") \
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--compression "$COMPRESSION" \
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--format "$FORMAT"; then
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echo "[INFO] Backup finished successfully."
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else
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echo "[ERROR] Backup failed!"
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exit 1
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fi
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say "Backup ($BACKUP_MODE) completed successfully."
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