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import the update_file_store in the index-scheduler

This commit is contained in:
Tamo 2022-09-13 19:28:39 +02:00 committed by Clément Renault
parent 2afb381f95
commit 76597fc382
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GPG Key ID: 92ADA4E935E71FA4
6 changed files with 5 additions and 277 deletions
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1
Cargo.lock generated
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@ -1738,6 +1738,7 @@ dependencies = [
"csv",
"derivative",
"either",
"file-store",
"fst",
"indexmap",
"lazy_static",

1
index-scheduler/Cargo.toml
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@ -11,6 +11,7 @@ bincode = "1.3.3"
csv = "1.1.6"
derivative = "2.2.0"
either = { version = "1.6.1", features = ["serde"] }
file-store = { path = "../file-store" }
fst = "0.4.7"
indexmap = { version = "1.8.0", features = ["serde-1"] }
lazy_static = "1.4.0"

17
index-scheduler/src/index/error.rs
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@ -4,8 +4,6 @@ use meilisearch_types::error::{Code, ErrorCode};
use meilisearch_types::internal_error;
use serde_json::Value;
use crate::update_file_store;
pub type Result<T> = std::result::Result<T, IndexError>;
#[derive(Debug, thiserror::Error)]
@ -25,23 +23,10 @@ internal_error!(
milli::heed::Error,
fst::Error,
serde_json::Error,
update_file_store::UpdateFileStoreError,
file_store::Error,
milli::documents::Error
);
/*
impl ErrorCode for IndexError {
fn error_code(&self) -> Code {
match self {
IndexError::Internal(_) => Code::Internal,
IndexError::DocumentNotFound(_) => Code::DocumentNotFound,
IndexError::Facet(e) => e.error_code(),
IndexError::Milli(e) => MilliError(e).error_code(),
}
}
}
*/
impl From<milli::UserError> for IndexError {
fn from(error: milli::UserError) -> IndexError {
IndexError::Milli(error.into())

2
index-scheduler/src/index/updates.rs
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@ -13,7 +13,7 @@ use uuid::Uuid;
use super::error::{IndexError, Result};
use super::index::{Index, IndexMeta};
use crate::update_file_store::UpdateFileStore;
use file_store::UpdateFileStore;
fn serialize_with_wildcard<S>(
field: &Setting<Vec<String>>,

3
index-scheduler/src/lib.rs
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@ -4,16 +4,15 @@ mod document_formats;
pub mod error;
pub mod index;
pub mod task;
mod update_file_store;
mod utils;
use batch::Batch;
pub use error::Error;
use file_store::UpdateFileStore;
use index::Index;
pub use task::Task;
use task::{Kind, KindWithContent, Status};
use time::OffsetDateTime;
use update_file_store::UpdateFileStore;
use std::collections::hash_map::Entry;
use std::sync::atomic::{AtomicBool, Ordering};

258
index-scheduler/src/update_file_store.rs
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@ -1,258 +0,0 @@
use std::fs::{create_dir_all, File};
use std::io::{self, BufReader, BufWriter, Write};
use std::ops::{Deref, DerefMut};
use std::path::{Path, PathBuf};
use milli::documents::DocumentsBatchReader;
use serde_json::Map;
use tempfile::{NamedTempFile, PersistError};
use uuid::Uuid;
#[cfg(not(test))]
pub use store::UpdateFileStore;
#[cfg(test)]
pub use test::MockUpdateFileStore as UpdateFileStore;
const UPDATE_FILES_PATH: &str = "updates/updates_files";
use crate::document_formats::read_ndjson;
pub struct UpdateFile {
path: PathBuf,
file: NamedTempFile,
}
#[derive(Debug, thiserror::Error)]
#[error("Error while persisting update to disk: {0}")]
pub struct UpdateFileStoreError(Box<dyn std::error::Error + Sync + Send + 'static>);
pub type Result<T> = std::result::Result<T, UpdateFileStoreError>;
macro_rules! into_update_store_error {
($($other:path),*) => {
$(
impl From<$other> for UpdateFileStoreError {
fn from(other: $other) -> Self {
Self(Box::new(other))
}
}
)*
};
}
into_update_store_error!(
PersistError,
io::Error,
serde_json::Error,
milli::documents::Error,
milli::documents::DocumentsBatchCursorError
);
impl UpdateFile {
pub fn persist(self) -> Result<()> {
self.file.persist(&self.path)?;
Ok(())
}
}
impl Deref for UpdateFile {
type Target = NamedTempFile;
fn deref(&self) -> &Self::Target {
&self.file
}
}
impl DerefMut for UpdateFile {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.file
}
}
mod store {
use super::*;
#[derive(Clone, Debug)]
pub struct UpdateFileStore {
path: PathBuf,
}
impl UpdateFileStore {
pub fn load_dump(src: impl AsRef<Path>, dst: impl AsRef<Path>) -> anyhow::Result<()> {
let src_update_files_path = src.as_ref().join(UPDATE_FILES_PATH);
let dst_update_files_path = dst.as_ref().join(UPDATE_FILES_PATH);
// No update files to load
if !src_update_files_path.exists() {
return Ok(());
}
create_dir_all(&dst_update_files_path)?;
let entries = std::fs::read_dir(src_update_files_path)?;
for entry in entries {
let entry = entry?;
let update_file = BufReader::new(File::open(entry.path())?);
let file_uuid = entry.file_name();
let file_uuid = file_uuid
.to_str()
.ok_or_else(|| anyhow::anyhow!("invalid update file name"))?;
let dst_path = dst_update_files_path.join(file_uuid);
let dst_file = BufWriter::new(File::create(dst_path)?);
read_ndjson(update_file, dst_file)?;
}
Ok(())
}
pub fn new(path: impl AsRef<Path>) -> Result<Self> {
let path = path.as_ref().join(UPDATE_FILES_PATH);
std::fs::create_dir_all(&path)?;
Ok(Self { path })
}
/// Creates a new temporary update file.
/// A call to `persist` is needed to persist the file in the database.
pub fn new_update(&self) -> Result<(Uuid, UpdateFile)> {
let file = NamedTempFile::new_in(&self.path)?;
let uuid = Uuid::new_v4();
let path = self.path.join(uuid.to_string());
let update_file = UpdateFile { file, path };
Ok((uuid, update_file))
}
/// Returns the file corresponding to the requested uuid.
pub fn get_update(&self, uuid: Uuid) -> Result<File> {
let path = self.path.join(uuid.to_string());
let file = File::open(path)?;
Ok(file)
}
/// Copies the content of the update file pointed to by `uuid` to the `dst` directory.
pub fn snapshot(&self, uuid: Uuid, dst: impl AsRef<Path>) -> Result<()> {
let src = self.path.join(uuid.to_string());
let mut dst = dst.as_ref().join(UPDATE_FILES_PATH);
std::fs::create_dir_all(&dst)?;
dst.push(uuid.to_string());
std::fs::copy(src, dst)?;
Ok(())
}
/// Peforms a dump of the given update file uuid into the provided dump path.
pub fn dump(&self, uuid: Uuid, dump_path: impl AsRef<Path>) -> Result<()> {
let uuid_string = uuid.to_string();
let update_file_path = self.path.join(&uuid_string);
let mut dst = dump_path.as_ref().join(UPDATE_FILES_PATH);
std::fs::create_dir_all(&dst)?;
dst.push(&uuid_string);
let update_file = File::open(update_file_path)?;
let mut dst_file = NamedTempFile::new_in(&dump_path)?;
let (mut document_cursor, index) =
DocumentsBatchReader::from_reader(update_file)?.into_cursor_and_fields_index();
let mut document_buffer = Map::new();
// TODO: we need to find a way to do this more efficiently. (create a custom serializer
// for jsonl for example...)
while let Some(document) = document_cursor.next_document()? {
for (field_id, content) in document.iter() {
if let Some(field_name) = index.name(field_id) {
let content = serde_json::from_slice(content)?;
document_buffer.insert(field_name.to_string(), content);
}
}
serde_json::to_writer(&mut dst_file, &document_buffer)?;
dst_file.write_all(b"\n")?;
document_buffer.clear();
}
dst_file.persist(dst)?;
Ok(())
}
pub fn get_size(&self, uuid: Uuid) -> Result<u64> {
Ok(self.get_update(uuid)?.metadata()?.len())
}
pub fn delete(&self, uuid: Uuid) -> Result<()> {
let path = self.path.join(uuid.to_string());
std::fs::remove_file(path)?;
Ok(())
}
}
}
#[cfg(test)]
mod test {
use std::sync::Arc;
use nelson::Mocker;
use super::*;
#[derive(Clone)]
pub enum MockUpdateFileStore {
Real(store::UpdateFileStore),
Mock(Arc<Mocker>),
}
impl MockUpdateFileStore {
pub fn mock(mocker: Mocker) -> Self {
Self::Mock(Arc::new(mocker))
}
pub fn load_dump(src: impl AsRef<Path>, dst: impl AsRef<Path>) -> anyhow::Result<()> {
store::UpdateFileStore::load_dump(src, dst)
}
pub fn new(path: impl AsRef<Path>) -> Result<Self> {
store::UpdateFileStore::new(path).map(Self::Real)
}
pub fn new_update(&self) -> Result<(Uuid, UpdateFile)> {
match self {
MockUpdateFileStore::Real(s) => s.new_update(),
MockUpdateFileStore::Mock(_) => todo!(),
}
}
pub fn get_update(&self, uuid: Uuid) -> Result<File> {
match self {
MockUpdateFileStore::Real(s) => s.get_update(uuid),
MockUpdateFileStore::Mock(_) => todo!(),
}
}
pub fn snapshot(&self, uuid: Uuid, dst: impl AsRef<Path>) -> Result<()> {
match self {
MockUpdateFileStore::Real(s) => s.snapshot(uuid, dst),
MockUpdateFileStore::Mock(_) => todo!(),
}
}
pub fn dump(&self, uuid: Uuid, dump_path: impl AsRef<Path>) -> Result<()> {
match self {
MockUpdateFileStore::Real(s) => s.dump(uuid, dump_path),
MockUpdateFileStore::Mock(_) => todo!(),
}
}
pub fn get_size(&self, uuid: Uuid) -> Result<u64> {
match self {
MockUpdateFileStore::Real(s) => s.get_size(uuid),
MockUpdateFileStore::Mock(_) => todo!(),
}
}
pub fn delete(&self, uuid: Uuid) -> Result<()> {
match self {
MockUpdateFileStore::Real(s) => s.delete(uuid),
MockUpdateFileStore::Mock(mocker) => unsafe { mocker.get("delete").call(uuid) },
}
}
}
}