proxmox-backup/src/backup/manifest.rs

73 lines
2.2 KiB
Rust
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use failure::*;
use std::convert::TryFrom;
use serde_json::{json, Value};
use crate::backup::BackupDir;
pub const MANIFEST_BLOB_NAME: &str = "index.json.blob";
struct FileInfo {
filename: String,
size: u64,
csum: [u8; 32],
}
pub struct BackupManifest {
snapshot: BackupDir,
files: Vec<FileInfo>,
}
impl BackupManifest {
pub fn new(snapshot: BackupDir) -> Self {
Self { files: Vec::new(), snapshot }
}
pub fn add_file(&mut self, filename: String, size: u64, csum: [u8; 32]) {
self.files.push(FileInfo { filename, size, csum });
}
pub fn into_json(self) -> Value {
json!({
"backup-type": self.snapshot.group().backup_type(),
"backup-id": self.snapshot.group().backup_id(),
"backup-time": self.snapshot.backup_time().timestamp(),
"files": self.files.iter()
.fold(Vec::new(), |mut acc, info| {
acc.push(json!({
"filename": info.filename,
"size": info.size,
"csum": proxmox::tools::digest_to_hex(&info.csum),
}));
acc
})
})
}
}
impl TryFrom<Value> for BackupManifest {
type Error = Error;
fn try_from(data: Value) -> Result<Self, Error> {
let backup_type = crate::tools::required_string_property(&data, "backup_type")?;
let backup_id = crate::tools::required_string_property(&data, "backup_id")?;
let backup_time = crate::tools::required_integer_property(&data, "backup_time")?;
let snapshot = BackupDir::new(backup_type, backup_id, backup_time);
let mut files = Vec::new();
for item in crate::tools::required_array_property(&data, "files")?.iter() {
let filename = crate::tools::required_string_property(item, "filename")?.to_owned();
let csum = crate::tools::required_string_property(item, "csum")?;
let csum = proxmox::tools::hex_to_digest(csum)?;
let size = crate::tools::required_integer_property(item, "size")? as u64;
files.push(FileInfo { filename, size, csum });
}
Ok(Self { files, snapshot })
}
}