335 lines
9.2 KiB
Rust
335 lines
9.2 KiB
Rust
extern crate serde;
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#[macro_use]
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extern crate serde_derive;
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use chrono::{NaiveDateTime, Utc};
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use clap::{App, Arg};
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use flate2::write::GzEncoder;
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use flate2::Compression;
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use regex::Regex;
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use std::fs::{copy, create_dir, create_dir_all, remove_dir_all, remove_file, DirEntry, File};
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use std::path::PathBuf;
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mod albatross_config;
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use albatross_config::{AlbatrossConfig, WorldConfig, WorldType};
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/// Struct to store information about the region
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struct Region {
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/// x position of the region
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x: i64,
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/// y position of the region
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y: i64,
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}
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impl Region {
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fn from_string(string: String) -> Option<Self> {
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let re = Regex::new(r"r\.(?P<x>-?[0-9])+\.(?P<y>-?[0-9])").unwrap();
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if re.is_match(string.as_str()) {
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let captures = re.captures(string.as_str()).unwrap();
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return Some(Region {
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x: captures["x"].parse::<i64>().unwrap(),
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y: captures["y"].parse::<i64>().unwrap(),
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});
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}
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None
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}
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}
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/// Backup a directory
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///
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/// # Param
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/// * `world_path` - path to the world folder
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/// * `backup_path` - path to the backup folder
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fn backup_dir(
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dir_name: &str,
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world_path: &PathBuf,
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backup_path: &PathBuf,
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) -> Result<(), std::io::Error> {
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let mut src_dir = world_path.clone();
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src_dir.push(dir_name);
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let mut backup_dir = backup_path.clone();
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backup_dir.push(dir_name);
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create_dir(&backup_dir)?;
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for entry in src_dir.read_dir().unwrap() {
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let entry = entry.unwrap();
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let mut target = backup_dir.clone();
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target.push(entry.file_name());
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copy(entry.path(), target)?;
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}
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Ok(())
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}
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/// Backup the regions
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///
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/// # Param
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/// * `dir_name` - name of the backup folder
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/// * `save_radius` - block radius to save
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/// * `world_path` - path to the world folder
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/// * `backup_path` - path to the backup folder
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fn backup_region(
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dir_name: &str,
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save_radius: u64,
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world_path: &PathBuf,
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backup_path: &PathBuf,
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) -> Result<(), std::io::Error> {
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let mut src_dir = world_path.clone();
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src_dir.push(dir_name);
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let mut backup_dir = backup_path.clone();
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backup_dir.push(dir_name);
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create_dir(&backup_dir)?;
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let save_radius = if save_radius < 512 {
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1 as i64
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} else {
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(save_radius / 512) as i64
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};
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for entry in src_dir.read_dir().unwrap() {
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let entry = entry.unwrap();
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let file_name = entry.file_name().to_str().unwrap().to_string();
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if let Some(region) = Region::from_string(file_name) {
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if region.x.abs() < save_radius && region.y.abs() < save_radius {
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let mut target = backup_dir.clone();
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target.push(entry.file_name());
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copy(entry.path(), target)?;
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}
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}
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}
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Ok(())
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}
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/// Backup a world
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///
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/// # Param
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/// * `world_path` - path to the world folder
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/// * `backup_path` - path to the backup folder
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/// * `world_config` - world config options
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fn backup_world(
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world_path: PathBuf,
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backup_path: PathBuf,
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world_config: &WorldConfig,
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) -> Result<(), std::io::Error> {
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let mut backup_path = backup_path.clone();
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backup_path.push(&world_config.world_name);
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create_dir(backup_path.as_path())?;
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backup_region("poi", world_config.save_radius, &world_path, &backup_path)?;
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backup_region(
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"region",
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world_config.save_radius,
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&world_path,
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&backup_path,
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)?;
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backup_dir("data", &world_path, &backup_path)?;
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Ok(())
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}
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/// Backup the overworld
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///
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/// # Param
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/// * `world_path` - path to the world folder
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/// * `backup_path` - path to the backup folder
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/// * `world_config` - world config options
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fn backup_overworld(
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world_path: PathBuf,
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backup_path: PathBuf,
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world_config: &WorldConfig,
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) -> Result<(), std::io::Error> {
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backup_world(world_path, backup_path, world_config)?;
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Ok(())
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}
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/// Backup the nether
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///
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/// # Param
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/// * `world_path` - path to the world folder
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/// * `backup_path` - path to the backup folder
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/// * `world_config` - world config options
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fn backup_nether(
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world_path: PathBuf,
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backup_path: PathBuf,
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world_config: &WorldConfig,
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) -> Result<(), std::io::Error> {
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let mut nether_path = world_path.clone();
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nether_path.push("DIM-1");
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backup_world(nether_path, backup_path, world_config)?;
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Ok(())
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}
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/// Backup the end
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///
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/// # Param
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/// * `world_path` - path to the world folder
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/// * `backup_path` - path to the backup folder
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/// * `world_config` - world config options
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fn backup_end(
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world_path: PathBuf,
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backup_path: PathBuf,
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world_config: &WorldConfig,
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) -> Result<(), std::io::Error> {
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let mut end_path = world_path.clone();
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end_path.push("DIM1");
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backup_world(end_path, backup_path, world_config)?;
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Ok(())
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}
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/// Compress the backup after the files have been copied
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///
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/// # Param
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/// * `tmp_dir`: tmp directory with the backed up files
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/// * `output_file`: output archive
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fn compress_backup(tmp_dir: &PathBuf, output_file: &PathBuf) -> Result<(), std::io::Error> {
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let archive = File::create(output_file)?;
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let enc = GzEncoder::new(archive, Compression::default());
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let mut tar_builder = tar::Builder::new(enc);
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tar_builder.append_dir_all(".", tmp_dir)?;
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Ok(())
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}
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/// Get the time of the backup from a file name
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///
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/// # Param
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/// * `archive_entry`: archive entry
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fn get_time_from_file_name(
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archive_entry: &DirEntry,
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) -> Result<Option<NaiveDateTime>, std::io::Error> {
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let file_name = archive_entry.file_name().to_str().unwrap().to_string();
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let name: Vec<&str> = file_name.split("_").collect();
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Ok(chrono::NaiveDateTime::parse_from_str(name[0], "%d-%m-%y-%H:%M:%S").ok())
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}
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/// Removes the old backups from the ouput directory
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///
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/// # Params
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/// * `output_dir` - output directory containing
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/// * `keep` - number of backups to keep
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fn remove_old_backups(output_dir: &PathBuf, keep: u64) -> Result<(), std::io::Error> {
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let mut backups = vec![];
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for entry in output_dir.read_dir()? {
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let entry = entry?;
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if let Some(ext) = entry.path().extension() {
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if ext == "gz" {
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backups.push(entry);
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}
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}
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}
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if backups.len() > keep as usize {
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backups.sort_by(|a, b| {
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let a_time = get_time_from_file_name(a).unwrap().unwrap();
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let b_time = get_time_from_file_name(b).unwrap().unwrap();
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b_time.cmp(&a_time)
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});
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let number_to_remove = backups.len() - keep as usize;
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for _i in 0..number_to_remove {
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let oldest = backups.pop().unwrap();
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remove_file(oldest.path())?;
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}
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}
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Ok(())
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}
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/// Backup the configured worlds from a minecraft server
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///
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/// # Params
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/// * `cfg` - config file
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fn do_backup(cfg: AlbatrossConfig) -> Result<(), std::io::Error> {
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let server_base_dir = cfg.backup.minecraft_dir.clone();
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let worlds = cfg.world_config.unwrap().clone();
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let time_str = Utc::now().format("%d-%m-%y-%H:%M:%S").to_string();
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let backup_name = format!("{}_backup.tar.gz", time_str);
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let mut output_archive = cfg.backup.output_dir.clone();
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output_archive.push(backup_name);
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let mut tmp_dir = cfg.backup.output_dir.clone();
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tmp_dir.push("tmp");
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remove_dir_all(&tmp_dir).ok();
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create_dir_all(tmp_dir.clone()).unwrap();
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for world in worlds {
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let mut world_dir = server_base_dir.clone();
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let world_name = world.world_name.clone();
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let world_type = match world.world_type.clone() {
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Some(world_type) => world_type,
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None => WorldType::OVERWORLD,
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};
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world_dir.push(world_name.clone());
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if world_dir.exists() && world_dir.is_dir() {
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match world_type {
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WorldType::OVERWORLD => {
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backup_overworld(world_dir.clone(), tmp_dir.clone(), &world)?;
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backup_dir("playerdata", &world_dir, &tmp_dir)?;
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}
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WorldType::NETHER => {
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backup_nether(world_dir, tmp_dir.clone(), &world)?;
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}
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WorldType::END => {
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backup_end(world_dir, tmp_dir.clone(), &world)?;
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}
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};
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} else {
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println!("World \"{}\" not found", world_name.clone());
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}
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}
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compress_backup(&tmp_dir, &output_archive)?;
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remove_dir_all(&tmp_dir)?;
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remove_old_backups(&cfg.backup.output_dir, cfg.backup.backups_to_keep)?;
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Ok(())
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}
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/// Albatross
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///
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/// Run backups of a Minecraft world
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fn main() {
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let mut app = App::new("Albatross").about("Backup your worlds").arg(
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Arg::with_name("config")
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.index(1)
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.short("c")
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.long("config")
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.value_name("CONFIG_PATH")
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.help("Config file path"),
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);
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// Get arg parser
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let matches = app.clone().get_matches();
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if let Some(cfg_path) = matches.value_of("config") {
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let cfg = AlbatrossConfig::new(cfg_path).expect("Config not found");
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if cfg.world_config.is_some() {
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match do_backup(cfg) {
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Err(e) => println!("Error doing backup: {}", e),
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_ => {}
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}
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} else {
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println!("No worlds specified to backed up!")
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}
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} else {
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app.print_help().expect("Unable to print help");
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}
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}
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