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.gitignore
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.gitignore
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/target
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Cargo.lock
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Cargo.lock
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# This file is automatically @generated by Cargo.
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"syn",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "time"
|
||||||
|
version = "0.1.44"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"
|
||||||
|
dependencies = [
|
||||||
|
"libc",
|
||||||
|
"wasi",
|
||||||
|
"winapi",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "toml"
|
||||||
|
version = "0.5.9"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "8d82e1a7758622a465f8cee077614c73484dac5b836c02ff6a40d5d1010324d7"
|
||||||
|
dependencies = [
|
||||||
|
"serde",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "unicode-xid"
|
||||||
|
version = "0.2.2"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "version_check"
|
||||||
|
version = "0.9.4"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "wasi"
|
||||||
|
version = "0.10.0+wasi-snapshot-preview1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi"
|
||||||
|
version = "0.3.9"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
|
||||||
|
dependencies = [
|
||||||
|
"winapi-i686-pc-windows-gnu",
|
||||||
|
"winapi-x86_64-pc-windows-gnu",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-i686-pc-windows-gnu"
|
||||||
|
version = "0.4.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-util"
|
||||||
|
version = "0.1.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
|
||||||
|
dependencies = [
|
||||||
|
"winapi",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-x86_64-pc-windows-gnu"
|
||||||
|
version = "0.4.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||||
13
Cargo.toml
Normal file
13
Cargo.toml
Normal file
@ -0,0 +1,13 @@
|
|||||||
|
[package]
|
||||||
|
name = "file_reap"
|
||||||
|
version = "0.1.0"
|
||||||
|
edition = "2021"
|
||||||
|
|
||||||
|
[dependencies]
|
||||||
|
clap = { version = "3.1.8", features = ["derive"] }
|
||||||
|
chrono = "0.4.19"
|
||||||
|
thiserror = "1.0.30"
|
||||||
|
serde = { version = "1.0.136", features = ["derive"] }
|
||||||
|
toml = "0.5.9"
|
||||||
|
log = "0.4.16"
|
||||||
|
pretty_env_logger = "0.4.0"
|
||||||
14
example.toml
Normal file
14
example.toml
Normal file
@ -0,0 +1,14 @@
|
|||||||
|
path = "./test"
|
||||||
|
#btrfs = true
|
||||||
|
|
||||||
|
[[periods]]
|
||||||
|
period_length = "1w"
|
||||||
|
chunk_size = "1h"
|
||||||
|
|
||||||
|
[[periods]]
|
||||||
|
period_length = "4w"
|
||||||
|
chunk_size = "1d"
|
||||||
|
|
||||||
|
[[periods]]
|
||||||
|
period_length = "40w"
|
||||||
|
chunk_size = "4w"
|
||||||
91
src/config.rs
Normal file
91
src/config.rs
Normal file
@ -0,0 +1,91 @@
|
|||||||
|
use serde::de::Visitor;
|
||||||
|
use serde::{Deserialize, Deserializer};
|
||||||
|
use std::fmt;
|
||||||
|
use std::path::PathBuf;
|
||||||
|
use std::time::Duration;
|
||||||
|
|
||||||
|
#[derive(Deserialize)]
|
||||||
|
pub struct Config {
|
||||||
|
/// The folder from which to reap
|
||||||
|
pub path: PathBuf,
|
||||||
|
|
||||||
|
/// Whether to treat the files as btrfs subvolumes
|
||||||
|
#[serde(default)]
|
||||||
|
pub btrfs: bool,
|
||||||
|
|
||||||
|
pub periods: Vec<ConfPeriod>,
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Deserialize)]
|
||||||
|
pub struct ConfPeriod {
|
||||||
|
/// The total duration of this period
|
||||||
|
#[serde(deserialize_with = "parse_duration")]
|
||||||
|
pub period_length: Duration,
|
||||||
|
|
||||||
|
/// The size of chunks in this period. Each chunk should hold 1 file.
|
||||||
|
#[serde(deserialize_with = "parse_duration")]
|
||||||
|
pub chunk_size: Duration,
|
||||||
|
}
|
||||||
|
|
||||||
|
fn parse_duration<'de, D>(d: D) -> Result<Duration, D::Error>
|
||||||
|
where
|
||||||
|
D: Deserializer<'de>,
|
||||||
|
{
|
||||||
|
let s = d.deserialize_string(StringVisitor)?;
|
||||||
|
|
||||||
|
let mut duration = Duration::ZERO;
|
||||||
|
|
||||||
|
for part in s.split_whitespace() {
|
||||||
|
if part.len() < 2 {
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
let suffix = part.chars().rev().next().unwrap();
|
||||||
|
let value = &part[..part.len() - suffix.len_utf8()];
|
||||||
|
|
||||||
|
let value: u32 = value.parse().expect("failed to parse duration value");
|
||||||
|
|
||||||
|
let second: Duration = Duration::from_secs(1);
|
||||||
|
let minute: Duration = second * 60;
|
||||||
|
let hour: Duration = minute * 60;
|
||||||
|
let day: Duration = hour * 24;
|
||||||
|
let week: Duration = day * 7;
|
||||||
|
let year: Duration = day * 365;
|
||||||
|
|
||||||
|
let unit = match suffix.to_ascii_lowercase() {
|
||||||
|
's' => second,
|
||||||
|
'm' => minute,
|
||||||
|
'h' => hour,
|
||||||
|
'd' => day,
|
||||||
|
'w' => week,
|
||||||
|
'y' => year,
|
||||||
|
_ => panic!("unknown unit of duration"),
|
||||||
|
};
|
||||||
|
|
||||||
|
duration += unit * value;
|
||||||
|
}
|
||||||
|
|
||||||
|
if duration == Duration::ZERO {
|
||||||
|
panic!("Invalid duration: Zero");
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(duration)
|
||||||
|
}
|
||||||
|
|
||||||
|
struct StringVisitor;
|
||||||
|
|
||||||
|
impl<'de> Visitor<'de> for StringVisitor {
|
||||||
|
type Value = String;
|
||||||
|
|
||||||
|
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
|
||||||
|
formatter.write_str("a string")
|
||||||
|
}
|
||||||
|
|
||||||
|
fn visit_string<E>(self, value: String) -> Result<Self::Value, E> {
|
||||||
|
Ok(value)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn visit_str<E>(self, value: &str) -> Result<Self::Value, E> {
|
||||||
|
Ok(value.to_string())
|
||||||
|
}
|
||||||
|
}
|
||||||
211
src/main.rs
Normal file
211
src/main.rs
Normal file
@ -0,0 +1,211 @@
|
|||||||
|
mod config;
|
||||||
|
|
||||||
|
use chrono::{DateTime, FixedOffset, Local};
|
||||||
|
#[macro_use]
|
||||||
|
extern crate log;
|
||||||
|
|
||||||
|
use clap::Parser;
|
||||||
|
use config::Config;
|
||||||
|
use log::LevelFilter;
|
||||||
|
use std::collections::{BinaryHeap, HashSet};
|
||||||
|
use std::fs;
|
||||||
|
use std::io;
|
||||||
|
use std::path::PathBuf;
|
||||||
|
use thiserror::Error;
|
||||||
|
|
||||||
|
type FileName = DateTime<FixedOffset>;
|
||||||
|
|
||||||
|
#[derive(Parser)]
|
||||||
|
struct Opt {
|
||||||
|
config: PathBuf,
|
||||||
|
|
||||||
|
/// Log more stuff
|
||||||
|
#[clap(long, short, parse(from_occurrences))]
|
||||||
|
verbose: u8,
|
||||||
|
|
||||||
|
/// Do not output anything but errors.
|
||||||
|
#[clap(long, short)]
|
||||||
|
quiet: bool,
|
||||||
|
|
||||||
|
/// Do not delete anything
|
||||||
|
#[clap(long, short)]
|
||||||
|
dry_run: bool,
|
||||||
|
}
|
||||||
|
|
||||||
|
#[derive(Debug, Error)]
|
||||||
|
enum Error {
|
||||||
|
#[error("I/O error: {0}")]
|
||||||
|
IO(#[from] io::Error),
|
||||||
|
|
||||||
|
#[error("Failed to parse config: {0}")]
|
||||||
|
ParseConfig(#[from] toml::de::Error),
|
||||||
|
|
||||||
|
#[error("Managed to overflow a DateTime. What did you do??")]
|
||||||
|
DateTimeOverflow,
|
||||||
|
|
||||||
|
#[error("Failed to delete btrfs subvolume: {0}")]
|
||||||
|
DeleteSubvolume(String),
|
||||||
|
}
|
||||||
|
|
||||||
|
fn main() {
|
||||||
|
let opt = Opt::parse();
|
||||||
|
|
||||||
|
let log_level = match opt.verbose {
|
||||||
|
0 if opt.quiet => LevelFilter::Error,
|
||||||
|
0 => LevelFilter::Info,
|
||||||
|
1 => LevelFilter::Debug,
|
||||||
|
2.. => LevelFilter::Trace,
|
||||||
|
};
|
||||||
|
|
||||||
|
pretty_env_logger::formatted_builder()
|
||||||
|
.filter(None, log_level)
|
||||||
|
.init();
|
||||||
|
|
||||||
|
if let Err(e) = run(&opt) {
|
||||||
|
println!("{e}");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn run(opt: &Opt) -> Result<(), Error> {
|
||||||
|
let config = fs::read_to_string(&opt.config)?;
|
||||||
|
let config: Config = toml::from_str(&config)?;
|
||||||
|
debug!("periods:");
|
||||||
|
for period in &config.periods {
|
||||||
|
debug!(
|
||||||
|
" length={:?}, chunk_size={:?}",
|
||||||
|
period.period_length, period.chunk_size
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
info!("scanning directory {:?}", config.path);
|
||||||
|
|
||||||
|
let mut files = BinaryHeap::new();
|
||||||
|
for entry in fs::read_dir(&config.path)? {
|
||||||
|
let name = entry?.file_name();
|
||||||
|
let name = name.to_string_lossy();
|
||||||
|
if let Ok(time) = DateTime::parse_from_rfc3339(&name) {
|
||||||
|
trace!("found \"{name}\"");
|
||||||
|
files.push(time);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
let files = files.into_sorted_vec();
|
||||||
|
|
||||||
|
let keep_files = check_files_to_keep(&config, &files)?;
|
||||||
|
|
||||||
|
info!("final decision:");
|
||||||
|
for &file in &files {
|
||||||
|
let keep_file = keep_files.contains(&file);
|
||||||
|
|
||||||
|
if keep_file {
|
||||||
|
debug!(" {file} KEEP");
|
||||||
|
} else {
|
||||||
|
info!(" {file} DELETE");
|
||||||
|
if opt.dry_run {
|
||||||
|
debug!("dry run enabled, file not deleted");
|
||||||
|
} else {
|
||||||
|
delete_file(&config, file)?;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
fn check_files_to_keep(config: &Config, files: &[FileName]) -> Result<HashSet<FileName>, Error> {
|
||||||
|
let mut files = files.to_vec();
|
||||||
|
|
||||||
|
let mut keep_files = HashSet::new();
|
||||||
|
|
||||||
|
let now = Local::now();
|
||||||
|
let mut cursor = now;
|
||||||
|
|
||||||
|
for period in &config.periods {
|
||||||
|
if files.is_empty() {
|
||||||
|
trace!("no more files, skipping remaining periods");
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
let period_length = chrono::Duration::from_std(period.period_length)
|
||||||
|
.map_err(|_| Error::DateTimeOverflow)?;
|
||||||
|
let chunk_size =
|
||||||
|
chrono::Duration::from_std(period.chunk_size).map_err(|_| Error::DateTimeOverflow)?;
|
||||||
|
|
||||||
|
if period_length < chunk_size {
|
||||||
|
panic!("invalid period configuration");
|
||||||
|
}
|
||||||
|
|
||||||
|
// NOTE: we are looking backwards in time, so all checks and additions need to be inverted
|
||||||
|
let period_end = cursor - period_length;
|
||||||
|
|
||||||
|
while cursor > period_end {
|
||||||
|
if files.is_empty() {
|
||||||
|
trace!("no more files, skipping remaining chunks");
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
let start_of_chunk = cursor;
|
||||||
|
let end_of_chunk = cursor - chunk_size;
|
||||||
|
cursor = end_of_chunk;
|
||||||
|
|
||||||
|
let mut chunk_file_to_keep = None;
|
||||||
|
|
||||||
|
trace!("processing chunk {end_of_chunk} -> {start_of_chunk}");
|
||||||
|
loop {
|
||||||
|
let file = match files.pop() {
|
||||||
|
Some(file) => file,
|
||||||
|
None => break,
|
||||||
|
};
|
||||||
|
|
||||||
|
if file > start_of_chunk {
|
||||||
|
trace!("{file} outside of chunk bounds. ignoring.");
|
||||||
|
keep_files.insert(file);
|
||||||
|
} else if file > end_of_chunk {
|
||||||
|
trace!("{file} is in chunk. beaten by {chunk_file_to_keep:?}");
|
||||||
|
chunk_file_to_keep.get_or_insert(file);
|
||||||
|
} else {
|
||||||
|
trace!("reached end of chunk");
|
||||||
|
files.push(file); // put the file back in the queue
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if let Some(file) = chunk_file_to_keep {
|
||||||
|
trace!("keeping files {file}");
|
||||||
|
keep_files.insert(file);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
cursor = period_end;
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(keep_files)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn delete_file(config: &Config, file: FileName) -> Result<(), Error> {
|
||||||
|
let file_path = config.path.join(file.to_rfc3339());
|
||||||
|
|
||||||
|
if config.btrfs {
|
||||||
|
trace!("btrfs subvolume delete {file_path:?}");
|
||||||
|
use std::process::Command;
|
||||||
|
let output = Command::new("btrfs")
|
||||||
|
.args(["subvolume", "delete"])
|
||||||
|
.arg(file_path)
|
||||||
|
.output()?;
|
||||||
|
|
||||||
|
if !output.status.success() {
|
||||||
|
let msg = String::from_utf8(output.stderr)
|
||||||
|
.unwrap_or_else(|_| "Failed to capture stderr".to_string());
|
||||||
|
return Err(Error::DeleteSubvolume(msg));
|
||||||
|
};
|
||||||
|
} else {
|
||||||
|
if file_path.is_dir() {
|
||||||
|
trace!("rm -r {file_path:?}");
|
||||||
|
fs::remove_dir_all(file_path)?;
|
||||||
|
} else {
|
||||||
|
trace!("rm {file_path:?}");
|
||||||
|
fs::remove_file(file_path)?;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
Reference in New Issue
Block a user