263 lines
7.2 KiB
Rust
263 lines
7.2 KiB
Rust
use std::fs::File;
|
|
use std::path::Path;
|
|
|
|
use anyhow::bail;
|
|
use log::info;
|
|
use serde::{Deserialize, Serialize};
|
|
use time::OffsetDateTime;
|
|
|
|
use tempfile::TempDir;
|
|
|
|
use crate::compression::from_tar_gz;
|
|
use crate::options::IndexerOpts;
|
|
|
|
use self::loaders::{v2, v3, v4, v5};
|
|
|
|
pub use handler::{generate_uid, DumpHandler};
|
|
|
|
mod compat;
|
|
pub mod error;
|
|
mod handler;
|
|
mod loaders;
|
|
|
|
const META_FILE_NAME: &str = "metadata.json";
|
|
|
|
#[derive(Serialize, Deserialize, Debug)]
|
|
#[serde(rename_all = "camelCase")]
|
|
pub struct Metadata {
|
|
db_version: String,
|
|
index_db_size: usize,
|
|
update_db_size: usize,
|
|
#[serde(with = "time::serde::rfc3339")]
|
|
dump_date: OffsetDateTime,
|
|
}
|
|
|
|
impl Metadata {
|
|
pub fn new(index_db_size: usize, update_db_size: usize) -> Self {
|
|
Self {
|
|
db_version: env!("CARGO_PKG_VERSION").to_string(),
|
|
index_db_size,
|
|
update_db_size,
|
|
dump_date: OffsetDateTime::now_utc(),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Serialize, Deserialize, Debug)]
|
|
#[serde(rename_all = "camelCase")]
|
|
pub struct MetadataV1 {
|
|
pub db_version: String,
|
|
}
|
|
|
|
#[derive(Debug, Serialize, Deserialize)]
|
|
#[serde(tag = "dumpVersion")]
|
|
pub enum MetadataVersion {
|
|
V1(MetadataV1),
|
|
V2(Metadata),
|
|
V3(Metadata),
|
|
V4(Metadata),
|
|
// V5 is forward compatible with V4 but not backward compatible.
|
|
V5(Metadata),
|
|
}
|
|
|
|
impl MetadataVersion {
|
|
pub fn load_dump(
|
|
self,
|
|
src: impl AsRef<Path>,
|
|
dst: impl AsRef<Path>,
|
|
index_db_size: usize,
|
|
meta_env_size: usize,
|
|
indexing_options: &IndexerOpts,
|
|
) -> anyhow::Result<()> {
|
|
match self {
|
|
MetadataVersion::V1(_meta) => {
|
|
anyhow::bail!("The version 1 of the dumps is not supported anymore. You can re-export your dump from a version between 0.21 and 0.24, or start fresh from a version 0.25 onwards.")
|
|
}
|
|
MetadataVersion::V2(meta) => v2::load_dump(
|
|
meta,
|
|
src,
|
|
dst,
|
|
index_db_size,
|
|
meta_env_size,
|
|
indexing_options,
|
|
)?,
|
|
MetadataVersion::V3(meta) => v3::load_dump(
|
|
meta,
|
|
src,
|
|
dst,
|
|
index_db_size,
|
|
meta_env_size,
|
|
indexing_options,
|
|
)?,
|
|
MetadataVersion::V4(meta) => v4::load_dump(
|
|
meta,
|
|
src,
|
|
dst,
|
|
index_db_size,
|
|
meta_env_size,
|
|
indexing_options,
|
|
)?,
|
|
MetadataVersion::V5(meta) => v5::load_dump(
|
|
meta,
|
|
src,
|
|
dst,
|
|
index_db_size,
|
|
meta_env_size,
|
|
indexing_options,
|
|
)?,
|
|
}
|
|
|
|
Ok(())
|
|
}
|
|
|
|
pub fn new_v5(index_db_size: usize, update_db_size: usize) -> Self {
|
|
let meta = Metadata::new(index_db_size, update_db_size);
|
|
Self::V5(meta)
|
|
}
|
|
|
|
pub fn db_version(&self) -> &str {
|
|
match self {
|
|
Self::V1(meta) => &meta.db_version,
|
|
Self::V2(meta) | Self::V3(meta) | Self::V4(meta) | Self::V5(meta) => &meta.db_version,
|
|
}
|
|
}
|
|
|
|
pub fn version(&self) -> &'static str {
|
|
match self {
|
|
MetadataVersion::V1(_) => "V1",
|
|
MetadataVersion::V2(_) => "V2",
|
|
MetadataVersion::V3(_) => "V3",
|
|
MetadataVersion::V4(_) => "V4",
|
|
MetadataVersion::V5(_) => "V5",
|
|
}
|
|
}
|
|
|
|
pub fn dump_date(&self) -> Option<&OffsetDateTime> {
|
|
match self {
|
|
MetadataVersion::V1(_) => None,
|
|
MetadataVersion::V2(meta)
|
|
| MetadataVersion::V3(meta)
|
|
| MetadataVersion::V4(meta)
|
|
| MetadataVersion::V5(meta) => Some(&meta.dump_date),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, Serialize, Deserialize, PartialEq, Clone)]
|
|
#[serde(rename_all = "snake_case")]
|
|
pub enum DumpStatus {
|
|
Done,
|
|
InProgress,
|
|
Failed,
|
|
}
|
|
|
|
pub fn load_dump(
|
|
dst_path: impl AsRef<Path>,
|
|
src_path: impl AsRef<Path>,
|
|
ignore_dump_if_db_exists: bool,
|
|
ignore_missing_dump: bool,
|
|
index_db_size: usize,
|
|
update_db_size: usize,
|
|
indexer_opts: &IndexerOpts,
|
|
) -> anyhow::Result<()> {
|
|
let empty_db = crate::is_empty_db(&dst_path);
|
|
let src_path_exists = src_path.as_ref().exists();
|
|
|
|
if empty_db && src_path_exists {
|
|
let (tmp_src, tmp_dst, meta) = extract_dump(&dst_path, &src_path)?;
|
|
meta.load_dump(
|
|
tmp_src.path(),
|
|
tmp_dst.path(),
|
|
index_db_size,
|
|
update_db_size,
|
|
indexer_opts,
|
|
)?;
|
|
persist_dump(&dst_path, tmp_dst)?;
|
|
Ok(())
|
|
} else if !empty_db && !ignore_dump_if_db_exists {
|
|
bail!(
|
|
"database already exists at {:?}, try to delete it or rename it",
|
|
dst_path
|
|
.as_ref()
|
|
.canonicalize()
|
|
.unwrap_or_else(|_| dst_path.as_ref().to_owned())
|
|
)
|
|
} else if !src_path_exists && !ignore_missing_dump {
|
|
bail!("dump doesn't exist at {:?}", src_path.as_ref())
|
|
} else {
|
|
// there is nothing to do
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
fn extract_dump(
|
|
dst_path: impl AsRef<Path>,
|
|
src_path: impl AsRef<Path>,
|
|
) -> anyhow::Result<(TempDir, TempDir, MetadataVersion)> {
|
|
// Setup a temp directory path in the same path as the database, to prevent cross devices
|
|
// references.
|
|
let temp_path = dst_path
|
|
.as_ref()
|
|
.parent()
|
|
.map(ToOwned::to_owned)
|
|
.unwrap_or_else(|| ".".into());
|
|
|
|
let tmp_src = tempfile::tempdir_in(temp_path)?;
|
|
let tmp_src_path = tmp_src.path();
|
|
|
|
from_tar_gz(&src_path, tmp_src_path)?;
|
|
|
|
let meta_path = tmp_src_path.join(META_FILE_NAME);
|
|
let mut meta_file = File::open(&meta_path)?;
|
|
let meta: MetadataVersion = serde_json::from_reader(&mut meta_file)?;
|
|
|
|
if !dst_path.as_ref().exists() {
|
|
std::fs::create_dir_all(dst_path.as_ref())?;
|
|
}
|
|
|
|
let tmp_dst = tempfile::tempdir_in(dst_path.as_ref())?;
|
|
|
|
info!(
|
|
"Loading dump {}, dump database version: {}, dump version: {}",
|
|
meta.dump_date()
|
|
.map(|t| format!("from {}", t))
|
|
.unwrap_or_else(String::new),
|
|
meta.db_version(),
|
|
meta.version()
|
|
);
|
|
|
|
Ok((tmp_src, tmp_dst, meta))
|
|
}
|
|
|
|
fn persist_dump(dst_path: impl AsRef<Path>, tmp_dst: TempDir) -> anyhow::Result<()> {
|
|
let persisted_dump = tmp_dst.into_path();
|
|
|
|
// Delete everything in the `data.ms` except the tempdir.
|
|
if dst_path.as_ref().exists() {
|
|
for file in dst_path.as_ref().read_dir().unwrap() {
|
|
let file = file.unwrap().path();
|
|
if file.file_name() == persisted_dump.file_name() {
|
|
continue;
|
|
}
|
|
|
|
if file.is_file() {
|
|
std::fs::remove_file(&file)?;
|
|
} else {
|
|
std::fs::remove_dir_all(&file)?;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Move the whole content of the tempdir into the `data.ms`.
|
|
for file in persisted_dump.read_dir().unwrap() {
|
|
let file = file.unwrap().path();
|
|
|
|
std::fs::rename(&file, &dst_path.as_ref().join(file.file_name().unwrap()))?;
|
|
}
|
|
|
|
// Delete the empty tempdir.
|
|
std::fs::remove_dir_all(&persisted_dump)?;
|
|
|
|
Ok(())
|
|
}
|