src/backup/backup_info.rs: move code into separate file

Also changed create_backup_dir() parameters - uses &BackupDir now.
This commit is contained in:
Dietmar Maurer 2019-03-05 07:18:12 +01:00
parent 2b01a22507
commit b3483782d1
4 changed files with 191 additions and 199 deletions

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@ -80,9 +80,9 @@ fn upload_catar(
verify_chunk_size(chunk_size)?; verify_chunk_size(chunk_size)?;
let datastore = DataStore::lookup_datastore(store)?; let datastore = DataStore::lookup_datastore(store)?;
let backup_dir = BackupDir::new(BackupGroup::new(backup_type, backup_id), backup_time);
let (mut path, _new) = datastore.create_backup_dir( let (mut path, _new) = datastore.create_backup_dir(&backup_dir)?;
backup_type, backup_id, Local.timestamp(backup_time, 0))?;
path.push(archive_name); path.push(archive_name);

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@ -29,5 +29,8 @@ pub use fixed_index::*;
mod dynamic_index; mod dynamic_index;
pub use dynamic_index::*; pub use dynamic_index::*;
mod backup_info;
pub use backup_info::*;
mod datastore; mod datastore;
pub use datastore::*; pub use datastore::*;

176
src/backup/backup_info.rs Normal file
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@ -0,0 +1,176 @@
use crate::tools;
use failure::*;
use regex::Regex;
use chrono::{DateTime, TimeZone, Local};
use std::path::{PathBuf, Path};
use lazy_static::lazy_static;
macro_rules! BACKUP_ID_RE { () => (r"[A-Za-z0-9][A-Za-z0-9_-]+") }
macro_rules! BACKUP_TYPE_RE { () => (r"(?:host|vm|ct)") }
macro_rules! BACKUP_TIME_RE { () => (r"[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}\+[0-9]{2}:[0-9]{2}") }
lazy_static!{
static ref BACKUP_FILE_REGEX: Regex = Regex::new(
r"^.*\.([fd]idx)$").unwrap();
static ref BACKUP_TYPE_REGEX: Regex = Regex::new(
concat!(r"^(", BACKUP_TYPE_RE!(), r")$")).unwrap();
static ref BACKUP_ID_REGEX: Regex = Regex::new(
concat!(r"^", BACKUP_ID_RE!(), r"$")).unwrap();
static ref BACKUP_DATE_REGEX: Regex = Regex::new(
concat!(r"^", BACKUP_TIME_RE!() ,r"$")).unwrap();
static ref GROUP_PATH_REGEX: Regex = Regex::new(
concat!(r"(", BACKUP_TYPE_RE!(), ")/(", BACKUP_ID_RE!(), r")$")).unwrap();
static ref SNAPSHOT_PATH_REGEX: Regex = Regex::new(
concat!(r"(", BACKUP_TYPE_RE!(), ")/(", BACKUP_ID_RE!(), ")/(", BACKUP_TIME_RE!(), r")$")).unwrap();
}
/// Group Backups
#[derive(Debug)]
pub struct BackupGroup {
/// Type of backup
backup_type: String,
/// Unique (for this type) ID
backup_id: String,
}
impl BackupGroup {
pub fn new<T: Into<String>>(backup_type: T, backup_id: T) -> Self {
Self { backup_type: backup_type.into(), backup_id: backup_id.into() }
}
pub fn backup_type(&self) -> &str {
&self.backup_type
}
pub fn backup_id(&self) -> &str {
&self.backup_id
}
pub fn parse(path: &str) -> Result<Self, Error> {
let cap = GROUP_PATH_REGEX.captures(path)
.ok_or_else(|| format_err!("unable to parse backup group path '{}'", path))?;
Ok(Self {
backup_type: cap.get(1).unwrap().as_str().to_owned(),
backup_id: cap.get(2).unwrap().as_str().to_owned(),
})
}
pub fn group_path(&self) -> PathBuf {
let mut relative_path = PathBuf::new();
relative_path.push(&self.backup_type);
relative_path.push(&self.backup_id);
relative_path
}
}
/// Uniquely identify a Backup (relative to data store)
#[derive(Debug)]
pub struct BackupDir {
/// Backup group
group: BackupGroup,
/// Backup timestamp
backup_time: DateTime<Local>,
}
impl BackupDir {
pub fn new(group: BackupGroup, timestamp: i64) -> Self {
// Note: makes sure that nanoseconds is 0
Self { group, backup_time: Local.timestamp(timestamp, 0) }
}
pub fn group(&self) -> &BackupGroup {
&self.group
}
pub fn backup_time(&self) -> DateTime<Local> {
self.backup_time
}
pub fn parse(path: &str) -> Result<Self, Error> {
let cap = SNAPSHOT_PATH_REGEX.captures(path)
.ok_or_else(|| format_err!("unable to parse backup snapshot path '{}'", path))?;
let group = BackupGroup::new(cap.get(1).unwrap().as_str(), cap.get(2).unwrap().as_str());
let backup_time = cap.get(3).unwrap().as_str().parse::<DateTime<Local>>()?;
Ok(BackupDir::new(group, backup_time.timestamp()))
}
pub fn relative_path(&self) -> PathBuf {
let mut relative_path = self.group.group_path();
relative_path.push(self.backup_time.to_rfc3339());
relative_path
}
}
/// Detailed Backup Information
#[derive(Debug)]
pub struct BackupInfo {
/// the backup directory
pub backup_dir: BackupDir,
/// List of data files
pub files: Vec<String>,
}
impl BackupInfo {
pub fn sort_list(list: &mut Vec<BackupInfo>, ascendending: bool) {
if ascendending { // oldest first
list.sort_unstable_by(|a, b| a.backup_dir.backup_time.cmp(&b.backup_dir.backup_time));
} else { // newest first
list.sort_unstable_by(|a, b| b.backup_dir.backup_time.cmp(&a.backup_dir.backup_time));
}
}
pub fn list_backups(path: &Path) -> Result<Vec<BackupInfo>, Error> {
let mut list = vec![];
tools::scandir(libc::AT_FDCWD, path, &BACKUP_TYPE_REGEX, |l0_fd, backup_type, file_type| {
if file_type != nix::dir::Type::Directory { return Ok(()); }
tools::scandir(l0_fd, backup_type, &BACKUP_ID_REGEX, |l1_fd, backup_id, file_type| {
if file_type != nix::dir::Type::Directory { return Ok(()); }
tools::scandir(l1_fd, backup_id, &BACKUP_DATE_REGEX, |l2_fd, backup_time, file_type| {
if file_type != nix::dir::Type::Directory { return Ok(()); }
let dt = backup_time.parse::<DateTime<Local>>()?;
let mut files = vec![];
tools::scandir(l2_fd, backup_time, &BACKUP_FILE_REGEX, |_, filename, file_type| {
if file_type != nix::dir::Type::File { return Ok(()); }
files.push(filename.to_owned());
Ok(())
})?;
list.push(BackupInfo {
backup_dir: BackupDir::new(BackupGroup::new(backup_type, backup_id), dt.timestamp()),
files,
});
Ok(())
})
})
})?;
Ok(list)
}
}

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@ -1,13 +1,10 @@
use failure::*; use failure::*;
use chrono::prelude::*;
use std::io; use std::io;
use std::path::{PathBuf, Path}; use std::path::{PathBuf, Path};
use std::collections::HashMap; use std::collections::HashMap;
use lazy_static::lazy_static; use lazy_static::lazy_static;
use std::sync::{Mutex, Arc}; use std::sync::{Mutex, Arc};
use regex::Regex;
use crate::tools; use crate::tools;
use crate::config::datastore; use crate::config::datastore;
@ -15,8 +12,11 @@ use super::chunk_store::*;
use super::fixed_index::*; use super::fixed_index::*;
use super::dynamic_index::*; use super::dynamic_index::*;
use super::index::*; use super::index::*;
use super::backup_info::*;
use chrono::{Timelike, Local}; lazy_static!{
static ref datastore_map: Mutex<HashMap<String, Arc<DataStore>>> = Mutex::new(HashMap::new());
}
/// Datastore Management /// Datastore Management
/// ///
@ -27,148 +27,6 @@ pub struct DataStore {
gc_mutex: Mutex<bool>, gc_mutex: Mutex<bool>,
} }
/// Group Backups
#[derive(Debug)]
pub struct BackupGroup {
/// Type of backup
backup_type: String,
/// Unique (for this type) ID
backup_id: String,
}
impl BackupGroup {
pub fn new<T: Into<String>>(backup_type: T, backup_id: T) -> Self {
Self { backup_type: backup_type.into(), backup_id: backup_id.into() }
}
pub fn backup_type(&self) -> &str {
&self.backup_type
}
pub fn backup_id(&self) -> &str {
&self.backup_id
}
pub fn parse(path: &str) -> Result<Self, Error> {
let cap = GROUP_PATH_REGEX.captures(path)
.ok_or_else(|| format_err!("unable to parse backup group path '{}'", path))?;
Ok(Self {
backup_type: cap.get(1).unwrap().as_str().to_owned(),
backup_id: cap.get(2).unwrap().as_str().to_owned(),
})
}
pub fn group_path(&self) -> PathBuf {
let mut relative_path = PathBuf::new();
relative_path.push(&self.backup_type);
relative_path.push(&self.backup_id);
relative_path
}
}
/// Uniquely identify a Backup (relative to data store)
#[derive(Debug)]
pub struct BackupDir {
/// Backup group
group: BackupGroup,
/// Backup timestamp
backup_time: DateTime<Local>,
}
impl BackupDir {
pub fn new(group: BackupGroup, timestamp: i64) -> Self {
// Note: makes sure that nanoseconds is 0
Self { group, backup_time: Local.timestamp(timestamp, 0) }
}
pub fn group(&self) -> &BackupGroup {
&self.group
}
pub fn backup_time(&self) -> DateTime<Local> {
self.backup_time
}
pub fn parse(path: &str) -> Result<Self, Error> {
let cap = SNAPSHOT_PATH_REGEX.captures(path)
.ok_or_else(|| format_err!("unable to parse backup snapshot path '{}'", path))?;
let group = BackupGroup::new(cap.get(1).unwrap().as_str(), cap.get(2).unwrap().as_str());
let backup_time = cap.get(3).unwrap().as_str().parse::<DateTime<Local>>()?;
Ok(BackupDir::new(group, backup_time.timestamp()))
}
fn backup_time_to_file_name(backup_time: DateTime<Local>) -> String {
// Note: backup_time should have nanosecond == 0
backup_time.to_rfc3339().to_string()
}
pub fn relative_path(&self) -> PathBuf {
let mut relative_path = self.group.group_path();
relative_path.push(&Self::backup_time_to_file_name(self.backup_time));
relative_path
}
}
/// Detailed Backup Information
#[derive(Debug)]
pub struct BackupInfo {
/// the backup directory
pub backup_dir: BackupDir,
/// List of data files
pub files: Vec<String>,
}
impl BackupInfo {
pub fn sort_list(list: &mut Vec<BackupInfo>, ascendending: bool) {
if ascendending { // oldest first
list.sort_unstable_by(|a, b| a.backup_dir.backup_time.cmp(&b.backup_dir.backup_time));
} else { // newest first
list.sort_unstable_by(|a, b| b.backup_dir.backup_time.cmp(&a.backup_dir.backup_time));
}
}
}
macro_rules! BACKUP_ID_RE { () => (r"[A-Za-z0-9][A-Za-z0-9_-]+") }
macro_rules! BACKUP_TYPE_RE { () => (r"(?:host|vm|ct)") }
macro_rules! BACKUP_TIME_RE { () => (r"[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}\+[0-9]{2}:[0-9]{2}") }
lazy_static!{
static ref datastore_map: Mutex<HashMap<String, Arc<DataStore>>> = Mutex::new(HashMap::new());
static ref BACKUP_FILE_REGEX: Regex = Regex::new(
r"^.*\.([fd]idx)$").unwrap();
static ref BACKUP_TYPE_REGEX: Regex = Regex::new(
concat!(r"^(", BACKUP_TYPE_RE!(), r")$")).unwrap();
static ref BACKUP_ID_REGEX: Regex = Regex::new(
concat!(r"^", BACKUP_ID_RE!(), r"$")).unwrap();
static ref BACKUP_DATE_REGEX: Regex = Regex::new(
concat!(r"^", BACKUP_TIME_RE!() ,r"$")).unwrap();
static ref GROUP_PATH_REGEX: Regex = Regex::new(
concat!(r"(", BACKUP_TYPE_RE!(), ")/(", BACKUP_ID_RE!(), r")$")).unwrap();
static ref SNAPSHOT_PATH_REGEX: Regex = Regex::new(
concat!(r"(", BACKUP_TYPE_RE!(), ")/(", BACKUP_ID_RE!(), ")/(", BACKUP_TIME_RE!(), r")$")).unwrap();
}
impl DataStore { impl DataStore {
pub fn lookup_datastore(name: &str) -> Result<Arc<DataStore>, Error> { pub fn lookup_datastore(name: &str) -> Result<Arc<DataStore>, Error> {
@ -286,31 +144,16 @@ impl DataStore {
Ok(()) Ok(())
} }
pub fn create_backup_dir( pub fn create_backup_dir(&self, backup_dir: &BackupDir) -> Result<(PathBuf, bool), io::Error> {
&self,
backup_type: &str,
backup_id: &str,
backup_time: DateTime<Local>,
) -> Result<(PathBuf, bool), io::Error> {
let mut relative_path = PathBuf::new();
relative_path.push(backup_type);
relative_path.push(backup_id);
// create intermediate path first: // create intermediate path first:
let mut full_path = self.base_path(); let mut full_path = self.base_path();
full_path.push(&relative_path); full_path.push(backup_dir.group().group_path());
std::fs::create_dir_all(&full_path)?; std::fs::create_dir_all(&full_path)?;
if backup_time.nanosecond() != 0 { let relative_path = backup_dir.relative_path();
return Err(io::Error::new(io::ErrorKind::Other, "invalid backup time - should not contain nanoseconds.")); let mut full_path = self.base_path();
} full_path.push(&relative_path);
let date_str = BackupDir::backup_time_to_file_name(backup_time);
relative_path.push(&date_str);
full_path.push(&date_str);
// create the last component now // create the last component now
match std::fs::create_dir(&full_path) { match std::fs::create_dir(&full_path) {
@ -322,37 +165,7 @@ impl DataStore {
pub fn list_backups(&self) -> Result<Vec<BackupInfo>, Error> { pub fn list_backups(&self) -> Result<Vec<BackupInfo>, Error> {
let path = self.base_path(); let path = self.base_path();
BackupInfo::list_backups(&path)
let mut list = vec![];
tools::scandir(libc::AT_FDCWD, &path, &BACKUP_TYPE_REGEX, |l0_fd, backup_type, file_type| {
if file_type != nix::dir::Type::Directory { return Ok(()); }
tools::scandir(l0_fd, backup_type, &BACKUP_ID_REGEX, |l1_fd, backup_id, file_type| {
if file_type != nix::dir::Type::Directory { return Ok(()); }
tools::scandir(l1_fd, backup_id, &BACKUP_DATE_REGEX, |l2_fd, backup_time, file_type| {
if file_type != nix::dir::Type::Directory { return Ok(()); }
let dt = backup_time.parse::<DateTime<Local>>()?;
let mut files = vec![];
tools::scandir(l2_fd, backup_time, &BACKUP_FILE_REGEX, |_, filename, file_type| {
if file_type != nix::dir::Type::File { return Ok(()); }
files.push(filename.to_owned());
Ok(())
})?;
list.push(BackupInfo {
backup_dir: BackupDir::new(BackupGroup::new(backup_type, backup_id), dt.timestamp()),
files,
});
Ok(())
})
})
})?;
Ok(list)
} }
pub fn list_images(&self) -> Result<Vec<PathBuf>, Error> { pub fn list_images(&self) -> Result<Vec<PathBuf>, Error> {