154 lines
4.4 KiB
Rust
154 lines
4.4 KiB
Rust
extern crate proxmox_backup;
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use failure::*;
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use std::os::unix::io::AsRawFd;
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use proxmox_backup::tools;
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use proxmox_backup::cli::command::*;
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use proxmox_backup::api::schema::*;
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use proxmox_backup::api::router::*;
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//use proxmox_backup::backup::chunk_store::*;
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//use proxmox_backup::backup::image_index::*;
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//use proxmox_backup::config::datastore;
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use proxmox_backup::catar::encoder::*;
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use proxmox_backup::backup::datastore::*;
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use serde_json::{Value};
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fn required_string_param<'a>(param: &'a Value, name: &str) -> &'a str {
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param[name].as_str().expect(&format!("missing parameter '{}'", name))
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}
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fn backup_dir(
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datastore: &DataStore,
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path: &str,
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dir: &mut nix::dir::Dir,
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target: &str,
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chunk_size: usize,
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) -> Result<(), Error> {
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let mut target = std::path::PathBuf::from(target);
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if let Some(ext) = target.extension() {
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if ext != "aidx" {
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bail!("got wrong file extension - expected '.aidx'");
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}
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} else {
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target.set_extension("aidx");
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}
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let mut index = datastore.create_archive_writer(&target, chunk_size)?;
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let path = std::path::PathBuf::from(path);
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CaTarEncoder::encode(path, dir, &mut index)?;
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index.close()?; // commit changes
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Ok(())
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}
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fn backup_image(datastore: &DataStore, file: &std::fs::File, size: usize, target: &str, chunk_size: usize) -> Result<(), Error> {
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let mut target = std::path::PathBuf::from(target);
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if let Some(ext) = target.extension() {
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if ext != "iidx" {
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bail!("got wrong file extension - expected '.iidx'");
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}
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} else {
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target.set_extension("iidx");
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}
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let mut index = datastore.create_image_writer(&target, size, chunk_size)?;
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tools::file_chunker(file, chunk_size, |pos, chunk| {
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index.add_chunk(pos, chunk)?;
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Ok(true)
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})?;
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index.close()?; // commit changes
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Ok(())
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}
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fn create_backup(param: Value, _info: &ApiMethod) -> Result<Value, Error> {
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let filename = required_string_param(¶m, "filename");
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let store = required_string_param(¶m, "store");
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let target = required_string_param(¶m, "target");
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let mut chunk_size = 4*1024*1024;
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if let Some(size) = param["chunk-size"].as_u64() {
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static SIZES: [u64; 7] = [64, 128, 256, 512, 1024, 2048, 4096];
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if SIZES.contains(&size) {
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chunk_size = (size as usize) * 1024;
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} else {
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bail!("Got unsupported chunk size '{}'", size);
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}
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}
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let datastore = DataStore::open(store)?;
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let file = std::fs::File::open(filename)?;
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let rawfd = file.as_raw_fd();
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let stat = nix::sys::stat::fstat(rawfd)?;
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if (stat.st_mode & libc::S_IFDIR) != 0 {
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println!("Backup directory '{}' to '{}'", filename, store);
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let mut dir = nix::dir::Dir::from_fd(rawfd)?;
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backup_dir(&datastore, &filename, &mut dir, &target, chunk_size)?;
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} else if (stat.st_mode & (libc::S_IFREG|libc::S_IFBLK)) != 0 {
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println!("Backup file '{}' to '{}'", filename, store);
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if stat.st_size <= 0 { bail!("got strange file size '{}'", stat.st_size); }
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let size = stat.st_size as usize;
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backup_image(&datastore, &file, size, &target, chunk_size)?;
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let idx = datastore.open_image_reader(target)?;
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idx.print_info();
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} else {
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bail!("unsupported file type (expected a directory, file or block device)");
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}
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//datastore.garbage_collection()?;
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Ok(Value::Null)
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}
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fn main() {
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let cmd_def = CliCommand::new(
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ApiMethod::new(
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create_backup,
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ObjectSchema::new("Create backup.")
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.required("filename", StringSchema::new("Source name (file or directory name)"))
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.required("store", StringSchema::new("Datastore name."))
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.required("target", StringSchema::new("Target name."))
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.optional(
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"chunk-size",
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IntegerSchema::new("Chunk size in KB. Must be a power of 2.")
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.minimum(64)
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.maximum(4096)
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.default(4096)
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)
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))
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.arg_param(vec!["filename", "target"])
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.completion_cb("store", proxmox_backup::config::datastore::complete_datastore_name);
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if let Err(err) = run_cli_command(&cmd_def.into()) {
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eprintln!("Error: {}", err);
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print_cli_usage();
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std::process::exit(-1);
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}
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}
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