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src/backup/datastore.rs: new helpers

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last_successful_backup: Returns the time of the last successful backup
group_path: Returns the absolute path for a backup_group
snapshot_path: Returns the absolute path for a backup_dir
This commit is contained in:
Dietmar Maurer
2020-01-22 15:04:08 +01:00
parent 1ca037d81c
commit 41b373eced
1 changed files with 34 additions and 8 deletions
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42
src/backup/datastore.rs
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@ -5,6 +5,7 @@ use std::sync::{Arc, Mutex};
use failure::*;
use lazy_static::lazy_static;
use chrono::{DateTime, Utc};
use super::backup_info::{BackupGroup, BackupDir};
use super::chunk_store::{ChunkStore, GarbageCollectionStatus};
@ -169,12 +170,24 @@ impl DataStore {
Ok(())
}
/// Remove a complete backup group including all snapshots
pub fn remove_backup_group(&self, backup_group: &BackupGroup,
) -> Result<(), io::Error> {
/// Returns the absolute path for a backup_group
pub fn group_path(&self, backup_group: &BackupGroup) -> PathBuf {
let mut full_path = self.base_path();
full_path.push(backup_group.group_path());
full_path
}
/// Returns the absolute path for backup_dir
pub fn snapshot_path(&self, backup_dir: &BackupDir) -> PathBuf {
let mut full_path = self.base_path();
full_path.push(backup_dir.relative_path());
full_path
}
/// Remove a complete backup group including all snapshots
pub fn remove_backup_group(&self, backup_group: &BackupGroup) -> Result<(), io::Error> {
let full_path = self.group_path(backup_group);
log::info!("removing backup group {:?}", full_path);
std::fs::remove_dir_all(full_path)?;
@ -183,11 +196,9 @@ impl DataStore {
}
/// Remove a backup directory including all content
pub fn remove_backup_dir(&self, backup_dir: &BackupDir,
) -> Result<(), io::Error> {
pub fn remove_backup_dir(&self, backup_dir: &BackupDir) -> Result<(), io::Error> {
let mut full_path = self.base_path();
full_path.push( backup_dir.relative_path());
let full_path = self.snapshot_path(backup_dir);
log::info!("removing backup {:?}", full_path);
std::fs::remove_dir_all(full_path)?;
@ -195,6 +206,21 @@ impl DataStore {
Ok(())
}
/// Returns the time of the last successful backup
///
/// Or None if there is no backup in the group (or the group dir does not exist).
pub fn last_successful_backup(&self, backup_group: &BackupGroup) -> Result<Option<DateTime<Utc>>, Error> {
let base_path = self.base_path();
let mut group_path = base_path.clone();
group_path.push(backup_group.group_path());
if group_path.exists() {
backup_group.last_successful_backup(&base_path)
} else {
Ok(None)
}
}
pub fn create_backup_dir(&self, backup_dir: &BackupDir) -> Result<(PathBuf, bool), io::Error> {
// create intermediate path first: