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WIP: refactor IndexController

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change the architecture of the index controller to allow it to own an
index store.
This commit is contained in:
mpostma 2021-01-16 15:09:48 +01:00
parent 686f987180
commit 6a3f625e11
No known key found for this signature in database
GPG Key ID: CBC8A7C1D7A28C3A
15 changed files with 1197 additions and 287 deletions
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40
Cargo.lock generated
View File

@ -1,5 +1,15 @@
# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
[[package]]
name = "Inflector"
version = "0.11.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "fe438c63458706e03479442743baae6c88256498e6431708f6dfc520a26515d3"
dependencies = [
"lazy_static",
"regex",
]
[[package]]
name = "actix-codec"
version = "0.3.0"
@ -1639,6 +1649,7 @@ dependencies = [
"mime",
"obkv",
"once_cell",
"ouroboros",
"page_size",
"rand 0.7.3",
"rayon",
@ -1941,6 +1952,29 @@ dependencies = [
"num-traits",
]
[[package]]
name = "ouroboros"
version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "069fb33e127cabdc8ad6a287eed9719b85c612d36199777f6dc41ad91f7be41a"
dependencies = [
"ouroboros_macro",
"stable_deref_trait",
]
[[package]]
name = "ouroboros_macro"
version = "0.8.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ad938cc920f299d6dce91e43d3ce316e785f4aa4bc4243555634dc2967098fc6"
dependencies = [
"Inflector",
"proc-macro-error",
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "page_size"
version = "0.4.2"
@ -2771,6 +2805,12 @@ version = "0.5.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
[[package]]
name = "stable_deref_trait"
version = "1.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
[[package]]
name = "standback"
version = "0.2.13"

1
Cargo.toml
View File

@ -61,6 +61,7 @@ whoami = "1.0.0"
dashmap = "4.0.2"
page_size = "0.4.2"
obkv = "0.1.1"
ouroboros = "0.8.0"
[dependencies.sentry]
default-features = false

47
src/data/mod.rs
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@ -8,17 +8,16 @@ use std::sync::Arc;
use sha2::Digest;
use crate::{option::Opt, updates::Settings};
use crate::updates::UpdateQueue;
use crate::index_controller::IndexController;
use crate::{option::Opt, index_controller::Settings};
use crate::index_controller::{IndexStore, UpdateStore};
#[derive(Clone)]
pub struct Data {
inner: Arc<DataInner>,
inner: Arc<DataInner<UpdateStore>>,
}
impl Deref for Data {
type Target = DataInner;
type Target = DataInner<UpdateStore>;
fn deref(&self) -> &Self::Target {
&self.inner
@ -26,8 +25,8 @@ impl Deref for Data {
}
#[derive(Clone)]
pub struct DataInner {
pub indexes: Arc<IndexController<UpdateQueue>>,
pub struct DataInner<I> {
pub indexes: Arc<I>,
api_keys: ApiKeys,
options: Opt,
}
@ -58,11 +57,10 @@ impl ApiKeys {
impl Data {
pub fn new(options: Opt) -> anyhow::Result<Data> {
let db_size = options.max_mdb_size.get_bytes() as usize;
let indexes = IndexController::new(&options.db_path)?;
let indexes = Arc::new(indexes);
let update_queue = Arc::new(UpdateQueue::new(&options, indexes.clone())?);
let path = options.db_path.clone();
let index_store = IndexStore::new(&path)?;
let index_controller = UpdateStore::new(index_store);
let indexes = Arc::new(index_controller);
let mut api_keys = ApiKeys {
master: options.clone().master_key,
@ -72,31 +70,28 @@ impl Data {
api_keys.generate_missing_api_keys();
let inner = DataInner { indexes, options, update_queue, api_keys };
let inner = DataInner { indexes, options, api_keys };
let inner = Arc::new(inner);
Ok(Data { inner })
}
pub fn settings<S: AsRef<str>>(&self, _index: S) -> anyhow::Result<Settings> {
let txn = self.indexes.env.read_txn()?;
let fields_map = self.indexes.fields_ids_map(&txn)?;
println!("fields_map: {:?}", fields_map);
pub fn settings<S: AsRef<str>>(&self, index_uid: S) -> anyhow::Result<Settings> {
let index = self.indexes
.get(&index_uid)?
.ok_or_else(|| anyhow::anyhow!("Index {} does not exist.", index_uid.as_ref()))?;
let displayed_attributes = self.indexes
.displayed_fields(&txn)?
let displayed_attributes = index
.displayed_fields()?
.map(|fields| fields.into_iter().map(String::from).collect())
.unwrap_or_else(|| vec!["*".to_string()]);
let searchable_attributes = self.indexes
.searchable_fields(&txn)?
.map(|fields| fields
.into_iter()
.map(String::from)
.collect())
let searchable_attributes = index
.searchable_fields()?
.map(|fields| fields.into_iter().map(String::from).collect())
.unwrap_or_else(|| vec!["*".to_string()]);
let faceted_attributes = self.indexes.faceted_fields(&txn)?
let faceted_attributes = index.faceted_fields()?
.into_iter()
.map(|(k, v)| (k, v.to_string()))
.collect();

4
src/data/search.rs
View File

@ -107,10 +107,10 @@ impl Data {
pub fn search<S: AsRef<str>>(&self, index: S, search_query: SearchQuery) -> anyhow::Result<SearchResult> {
let start = Instant::now();
let index = self.indexes
.get(index)?
.get(&index)?
.ok_or_else(|| Error::OpenIndex(format!("Index {} doesn't exists.", index.as_ref())))?;
let Results { found_words, documents_ids, nb_hits, limit, .. } = index.search(search_query)?;
let Results { found_words, documents_ids, nb_hits, limit, .. } = index.search(&search_query)?;
let fields_ids_map = index.fields_ids_map()?;

66
src/data/updates.rs
View File

@ -1,18 +1,20 @@
use std::ops::Deref;
use milli::update::{IndexDocumentsMethod, UpdateFormat};
//use milli::update_store::UpdateStatus;
use async_compression::tokio_02::write::GzipEncoder;
use futures_util::stream::StreamExt;
use tokio::io::AsyncWriteExt;
use milli::update::{IndexDocumentsMethod, UpdateFormat};
use milli::update_store::UpdateStatus;
use super::Data;
use crate::updates::{UpdateMeta, UpdateResult, UpdateStatusResponse, Settings};
use crate::index_controller::IndexController;
use crate::index_controller::{UpdateStatusResponse, Settings};
impl Data {
pub async fn add_documents<B, E, S>(
&self,
_index: S,
index: S,
method: IndexDocumentsMethod,
format: UpdateFormat,
mut stream: impl futures::Stream<Item=Result<B, E>> + Unpin,
@ -20,7 +22,7 @@ impl Data {
where
B: Deref<Target = [u8]>,
E: std::error::Error + Send + Sync + 'static,
S: AsRef<str>,
S: AsRef<str> + Send + Sync + 'static,
{
let file = tokio::task::spawn_blocking(tempfile::tempfile).await?;
let file = tokio::fs::File::from_std(file?);
@ -37,43 +39,39 @@ impl Data {
let file = file.into_std().await;
let mmap = unsafe { memmap::Mmap::map(&file)? };
let meta = UpdateMeta::DocumentsAddition { method, format };
let queue = self.update_queue.clone();
let update = tokio::task::spawn_blocking(move || queue.register_update(meta, &mmap[..])).await??;
let indexes = self.indexes.clone();
let update = tokio::task::spawn_blocking(move ||indexes.add_documents(index, method, format, &mmap[..])).await??;
Ok(update.into())
}
pub async fn update_settings<S: AsRef<str>>(
pub async fn update_settings<S: AsRef<str> + Send + Sync + 'static>(
&self,
_index: S,
index: S,
settings: Settings
) -> anyhow::Result<UpdateStatusResponse> {
let meta = UpdateMeta::Settings(settings);
let queue = self.update_queue.clone();
let update = tokio::task::spawn_blocking(move || queue.register_update(meta, &[])).await??;
let indexes = self.indexes.clone();
let update = tokio::task::spawn_blocking(move || indexes.update_settings(index, settings)).await??;
Ok(update.into())
}
#[inline]
pub fn get_update_status(&self, _index: &str, uid: u64) -> anyhow::Result<Option<UpdateStatus<UpdateMeta, UpdateResult, String>>> {
self.update_queue.get_update_status(uid)
}
//#[inline]
//pub fn get_update_status<S: AsRef<str>>(&self, _index: S, uid: u64) -> anyhow::Result<Option<UpdateStatus<UpdateMeta, UpdateResult, String>>> {
//self.indexes.get_update_status(uid)
//}
pub fn get_updates_status(&self, _index: &str) -> anyhow::Result<Vec<UpdateStatus<UpdateMeta, UpdateResult, String>>> {
let result = self.update_queue.iter_metas(|processing, processed, pending, aborted, failed| {
let mut metas = processing
.map(UpdateStatus::from)
.into_iter()
.chain(processed.filter_map(|i| Some(i.ok()?.1)).map(UpdateStatus::from))
.chain(pending.filter_map(|i| Some(i.ok()?.1)).map(UpdateStatus::from))
.chain(aborted.filter_map(|i| Some(i.ok()?.1)).map(UpdateStatus::from))
.chain(failed.filter_map(|i| Some(i.ok()?.1)).map(UpdateStatus::from))
.collect::<Vec<_>>();
metas.sort_by(|a, b| a.id().cmp(&b.id()));
Ok(metas)
})?;
Ok(result)
}
//pub fn get_updates_status(&self, _index: &str) -> anyhow::Result<Vec<UpdateStatus<UpdateMeta, UpdateResult, String>>> {
//let result = self.update_queue.iter_metas(|processing, processed, pending, aborted, failed| {
//let mut metas = processing
//.map(UpdateStatus::from)
//.into_iter()
//.chain(processed.filter_map(|i| Some(i.ok()?.1)).map(UpdateStatus::from))
//.chain(pending.filter_map(|i| Some(i.ok()?.1)).map(UpdateStatus::from))
//.chain(aborted.filter_map(|i| Some(i.ok()?.1)).map(UpdateStatus::from))
//.chain(failed.filter_map(|i| Some(i.ok()?.1)).map(UpdateStatus::from))
//.collect::<Vec<_>>();
//metas.sort_by(|a, b| a.id().cmp(&b.id()));
//Ok(metas)
//})?;
//Ok(result)
//}
}

255
src/index_controller/index_store.rs Normal file
View File

@ -0,0 +1,255 @@
use std::fs::File;
use std::io::{Read, Write};
use std::path::{Path, PathBuf};
use std::sync::Arc;
use std::collections::HashMap;
use anyhow::Result;
use chrono::{DateTime, Utc};
use dashmap::DashMap;
use heed::types::{Str, SerdeBincode};
use heed::{EnvOpenOptions, Env, Database};
use milli::{Index, FieldsIdsMap, SearchResult, FieldId, facet::FacetType};
use serde::{Serialize, Deserialize};
use ouroboros::self_referencing;
use crate::data::SearchQuery;
const CONTROLLER_META_FILENAME: &str = "index_controller_meta";
const INDEXES_CONTROLLER_FILENAME: &str = "indexes_db";
const INDEXES_DB_NAME: &str = "indexes_db";
#[derive(Debug, Serialize, Deserialize)]
struct IndexStoreMeta {
open_options: EnvOpenOptions,
created_at: DateTime<Utc>,
}
impl IndexStoreMeta {
fn from_path(path: impl AsRef<Path>) -> Result<Option<IndexStoreMeta>> {
let mut path = path.as_ref().to_path_buf();
path.push(CONTROLLER_META_FILENAME);
if path.exists() {
let mut file = File::open(path)?;
let mut buffer = Vec::new();
let n = file.read_to_end(&mut buffer)?;
let meta: IndexStoreMeta = serde_json::from_slice(&buffer[..n])?;
Ok(Some(meta))
} else {
Ok(None)
}
}
fn to_path(self, path: impl AsRef<Path>) -> Result<()> {
let mut path = path.as_ref().to_path_buf();
path.push(CONTROLLER_META_FILENAME);
if path.exists() {
Err(anyhow::anyhow!("Index controller metadata already exists"))
} else {
let mut file = File::create(path)?;
let json = serde_json::to_vec(&self)?;
file.write_all(&json)?;
Ok(())
}
}
}
#[derive(Debug, Serialize, Deserialize)]
pub struct IndexMetadata {
created_at: DateTime<Utc>,
open_options: EnvOpenOptions,
uuid: String,
}
impl IndexMetadata {
fn open_index(self, path: impl AsRef<Path>) -> Result<Index> {
// create a path in the form "db_path/indexes/index_id"
let mut path = path.as_ref().to_path_buf();
path.push("indexes");
path.push(&self.uuid);
Ok(Index::new(self.open_options, path)?)
}
}
#[self_referencing]
pub struct IndexView {
pub index: Arc<Index>,
#[borrows(index)]
#[covariant]
pub txn: heed::RoTxn<'this>,
uuid: String,
}
impl IndexView {
pub fn search(&self, search_query: &SearchQuery) -> Result<SearchResult> {
self.with(|this| {
let mut search = this.index.search(&this.txn);
if let Some(query) = &search_query.q {
search.query(query);
}
if let Some(offset) = search_query.offset {
search.offset(offset);
}
let limit = search_query.limit;
search.limit(limit);
Ok(search.execute()?)
})
}
#[inline]
pub fn fields_ids_map(&self) -> Result<FieldsIdsMap> {
self.with(|this| Ok(this.index.fields_ids_map(&this.txn)?))
}
#[inline]
pub fn displayed_fields_ids(&self) -> Result<Option<Vec<FieldId>>> {
self.with(|this| Ok(this.index.displayed_fields_ids(&this.txn)?))
}
#[inline]
pub fn displayed_fields(&self) -> Result<Option<Vec<String>>> {
self.with(|this| Ok(this.index
.displayed_fields(&this.txn)?
.map(|fields| fields.into_iter().map(String::from).collect())))
}
#[inline]
pub fn searchable_fields(&self) -> Result<Option<Vec<String>>> {
self.with(|this| Ok(this.index
.searchable_fields(&this.txn)?
.map(|fields| fields.into_iter().map(String::from).collect())))
}
#[inline]
pub fn faceted_fields(&self) -> Result<HashMap<std::string::String, FacetType>> {
self.with(|this| Ok(this.index.faceted_fields(&this.txn)?))
}
pub fn documents(&self, ids: &[u32]) -> Result<Vec<(u32, obkv::KvReader<'_>)>> {
let txn = self.borrow_txn();
let index = self.borrow_index();
Ok(index.documents(txn, ids.into_iter().copied())?)
}
//pub async fn add_documents<B, E>(
//&self,
//method: IndexDocumentsMethod,
//format: UpdateFormat,
//mut stream: impl futures::Stream<Item=Result<B, E>> + Unpin,
//) -> anyhow::Result<UpdateStatusResponse>
//where
//B: Deref<Target = [u8]>,
//E: std::error::Error + Send + Sync + 'static,
//{
//let file = tokio::task::spawn_blocking(tempfile::tempfile).await?;
//let file = tokio::fs::File::from_std(file?);
//let mut encoder = GzipEncoder::new(file);
//while let Some(result) = stream.next().await {
//let bytes = &*result?;
//encoder.write_all(&bytes[..]).await?;
//}
//encoder.shutdown().await?;
//let mut file = encoder.into_inner();
//file.sync_all().await?;
//let file = file.into_std().await;
//let mmap = unsafe { memmap::Mmap::map(&file)? };
//let meta = UpdateMeta::DocumentsAddition { method, format };
//let index = self.index.clone();
//let queue = self.update_store.clone();
//let update = tokio::task::spawn_blocking(move || queue.register_update(index, meta, &mmap[..])).await??;
//Ok(update.into())
//}
}
pub struct IndexStore {
path: PathBuf,
env: Env,
indexes_db: Database<Str, SerdeBincode<IndexMetadata>>,
indexes: DashMap<String, (String, Arc<Index>)>,
}
impl IndexStore {
/// Open the index controller from meta found at path, and create a new one if no meta is
/// found.
pub fn new(path: impl AsRef<Path>) -> Result<Self> {
// If index controller metadata is present, we return the env, otherwise, we create a new
// metadata from scratch before returning a new env.
let path = path.as_ref().to_path_buf();
let env = match IndexStoreMeta::from_path(&path)? {
Some(meta) => meta.open_options.open(INDEXES_CONTROLLER_FILENAME)?,
None => {
let mut open_options = EnvOpenOptions::new();
open_options.map_size(page_size::get() * 1000);
let env = open_options.open(INDEXES_CONTROLLER_FILENAME)?;
let created_at = Utc::now();
let meta = IndexStoreMeta { open_options: open_options.clone(), created_at };
meta.to_path(&path)?;
env
}
};
let indexes = DashMap::new();
let indexes_db = match env.open_database(Some(INDEXES_DB_NAME))? {
Some(indexes_db) => indexes_db,
None => env.create_database(Some(INDEXES_DB_NAME))?,
};
Ok(Self { env, indexes, indexes_db, path })
}
pub fn get_or_create<S: AsRef<str>>(&self, _name: S) -> Result<IndexView> {
todo!()
}
/// Get an index with read access to the db. The index are lazily loaded, meaning that we first
/// check for its exixtence in the indexes map, and if it doesn't exist, the index db is check
/// for metadata to launch the index.
pub fn get<S: AsRef<str>>(&self, name: S) -> Result<Option<IndexView>> {
match self.indexes.get(name.as_ref()) {
Some(entry) => {
let index = entry.1.clone();
let uuid = entry.0.clone();
let view = IndexView::try_new(index, |index| index.read_txn(), uuid)?;
Ok(Some(view))
}
None => {
let txn = self.env.read_txn()?;
match self.indexes_db.get(&txn, name.as_ref())? {
Some(meta) => {
let uuid = meta.uuid.clone();
let index = Arc::new(meta.open_index(&self.path)?);
self.indexes.insert(name.as_ref().to_owned(), (uuid.clone(), index.clone()));
let view = IndexView::try_new(index, |index| index.read_txn(), uuid)?;
Ok(Some(view))
}
None => Ok(None)
}
}
}
}
pub fn get_mut<S: AsRef<str>>(&self, _name: S) -> Result<Option<IndexView>> {
todo!()
}
pub async fn delete_index<S: AsRef<str>>(&self, _name:S) -> Result<()> {
todo!()
}
pub async fn list_indices(&self) -> Result<Vec<(String, IndexMetadata)>> {
todo!()
}
pub async fn rename_index(&self, _old: &str, _new: &str) -> Result<()> {
todo!()
}
}

293
src/index_controller/mod.rs
View File

@ -1,196 +1,145 @@
use std::fs::File;
use std::io::{Read, Write};
use std::path::{Path, PathBuf};
mod index_store;
mod update_store;
pub use index_store::IndexStore;
pub use update_store::UpdateStore;
use std::num::NonZeroUsize;
use std::ops::Deref;
use std::collections::HashMap;
use anyhow::Result;
use chrono::{DateTime, Utc};
use dashmap::DashMap;
use dashmap::mapref::one::Ref;
use heed::types::{Str, SerdeBincode};
use heed::{EnvOpenOptions, Env, Database};
use milli::{Index, FieldsIdsMap, SearchResult, FieldId};
use serde::{Serialize, Deserialize};
use milli::update::{IndexDocumentsMethod, UpdateFormat};
use milli::update_store::{Processed, Processing, Failed, Pending, Aborted};
use serde::{Serialize, Deserialize, de::Deserializer};
use crate::data::SearchQuery;
pub type UpdateStatusResponse = UpdateStatus<UpdateMeta, UpdateResult, String>;
const CONTROLLER_META_FILENAME: &str = "index_controller_meta";
const INDEXES_CONTROLLER_FILENAME: &str = "indexes_db";
const INDEXES_DB_NAME: &str = "indexes_db";
pub trait UpdateStore {}
pub struct IndexController<U> {
path: PathBuf,
update_store: U,
env: Env,
indexes_db: Database<Str, SerdeBincode<IndexMetadata>>,
indexes: DashMap<String, Index>,
#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(tag = "type")]
pub enum UpdateMeta {
DocumentsAddition { method: IndexDocumentsMethod, format: UpdateFormat },
ClearDocuments,
Settings(Settings),
Facets(Facets),
}
#[derive(Debug, Serialize, Deserialize)]
struct IndexControllerMeta {
open_options: EnvOpenOptions,
created_at: DateTime<Utc>,
#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
#[serde(rename_all = "camelCase")]
pub struct Facets {
pub level_group_size: Option<NonZeroUsize>,
pub min_level_size: Option<NonZeroUsize>,
}
impl IndexControllerMeta {
fn from_path(path: impl AsRef<Path>) -> Result<Option<IndexControllerMeta>> {
let mut path = path.as_ref().to_path_buf();
path.push(CONTROLLER_META_FILENAME);
if path.exists() {
let mut file = File::open(path)?;
let mut buffer = Vec::new();
let n = file.read_to_end(&mut buffer)?;
let meta: IndexControllerMeta = serde_json::from_slice(&buffer[..n])?;
Ok(Some(meta))
} else {
Ok(None)
}
}
#[derive(Debug, Clone, Serialize)]
#[serde(tag = "type")]
pub enum UpdateStatus<M, P, N> {
Pending { update_id: u64, meta: Pending<M> },
Progressing { update_id: u64, meta: P },
Processed { update_id: u64, meta: Processed<M, N> },
Aborted { update_id: u64, meta: Aborted<M> },
}
fn to_path(self, path: impl AsRef<Path>) -> Result<()> {
let mut path = path.as_ref().to_path_buf();
path.push(CONTROLLER_META_FILENAME);
if path.exists() {
Err(anyhow::anyhow!("Index controller metadata already exists"))
} else {
let mut file = File::create(path)?;
let json = serde_json::to_vec(&self)?;
file.write_all(&json)?;
Ok(())
fn deserialize_some<'de, T, D>(deserializer: D) -> Result<Option<T>, D::Error>
where T: Deserialize<'de>,
D: Deserializer<'de>
{
Deserialize::deserialize(deserializer).map(Some)
}
#[derive(Debug, Clone, Default, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
#[serde(rename_all = "camelCase")]
pub struct Settings {
#[serde(
default,
deserialize_with = "deserialize_some",
skip_serializing_if = "Option::is_none",
)]
pub displayed_attributes: Option<Option<Vec<String>>>,
#[serde(
default,
deserialize_with = "deserialize_some",
skip_serializing_if = "Option::is_none",
)]
pub searchable_attributes: Option<Option<Vec<String>>>,
#[serde(default)]
pub faceted_attributes: Option<Option<HashMap<String, String>>>,
#[serde(
default,
deserialize_with = "deserialize_some",
skip_serializing_if = "Option::is_none",
)]
pub criteria: Option<Option<Vec<String>>>,
}
impl Settings {
pub fn cleared() -> Self {
Self {
displayed_attributes: Some(None),
searchable_attributes: Some(None),
faceted_attributes: Some(None),
criteria: Some(None),
}
}
}
#[derive(Debug, Serialize, Deserialize)]
struct IndexMetadata {
created_at: DateTime<Utc>,
open_options: EnvOpenOptions,
id: String,
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum UpdateResult {
//DocumentsAddition(DocumentAdditionResult),
Other,
}
impl IndexMetadata {
fn open_index(&self, path: impl AsRef<Path>) -> Result<Index> {
// create a path in the form "db_path/indexes/index_id"
let mut path = path.as_ref().to_path_buf();
path.push("indexes");
path.push(&self.id);
Ok(Index::new(self.open_options, path)?)
}
}
/// The `IndexController` is in charge of the access to the underlying indices. It splits the logic
/// for read access which is provided, and write access which must be provided. This allows the
/// implementer to define the behaviour of write accesses to the indices, and abstract the
/// scheduling of the updates. The implementer must be able to provide an instance of `IndexStore`
pub trait IndexController: Deref<Target = IndexStore> {
struct IndexView<'a, U> {
txn: heed::RoTxn<'a>,
index: Ref<'a, String, Index>,
update_store: &'a U,
}
/*
* Write operations
*
* Logic for the write operation need to be provided by the implementer, since they can be made
* asynchronous thanks to an update_store for example.
*
* */
impl<'a, U: UpdateStore> IndexView<'a, U> {
pub fn search(&self, search_query: SearchQuery) -> Result<SearchResult> {
let mut search = self.index.search(&self.txn);
if let Some(query) = &search_query.q {
search.query(query);
}
/// Perform document addition on the database. If the provided index does not exist, it will be
/// created when the addition is applied to the index.
fn add_documents<S: AsRef<str>>(
&self,
index: S,
method: IndexDocumentsMethod,
format: UpdateFormat,
data: &[u8],
) -> anyhow::Result<UpdateStatusResponse>;
if let Some(offset) = search_query.offset {
search.offset(offset);
}
/// Updates an index settings. If the index does not exist, it will be created when the update
/// is applied to the index.
fn update_settings<S: AsRef<str>>(&self, index_uid: S, settings: Settings) -> anyhow::Result<UpdateStatusResponse>;
let limit = search_query.limit;
search.limit(limit);
/// Create an index with the given `index_uid`.
fn create_index<S: AsRef<str>>(&self, index_uid: S) -> Result<()>;
Ok(search.execute()?)
}
/// Delete index with the given `index_uid`, attempting to close it beforehand.
fn delete_index<S: AsRef<str>>(&self, index_uid: S) -> Result<()>;
pub fn fields_ids_map(&self) -> Result<FieldsIdsMap> {
Ok(self.index.fields_ids_map(&self.txn)?)
}
/// Swap two indexes, concretely, it simply swaps the index the names point to.
fn swap_indices<S1: AsRef<str>, S2: AsRef<str>>(&self, index1_uid: S1, index2_uid: S2) -> Result<()>;
pub fn fields_displayed_fields_ids(&self) -> Result<Option<Vec<FieldId>>> {
Ok(self.index.displayed_fields_ids(&self.txn)?)
}
pub fn documents(&self, ids: Vec<u32>) -> Result<Vec<(u32, obkv::KvReader<'_>)>> {
Ok(self.index.documents(&self.txn, ids)?)
}
}
impl<U: UpdateStore> IndexController<U> {
/// Open the index controller from meta found at path, and create a new one if no meta is
/// found.
pub fn new(path: impl AsRef<Path>, update_store: U) -> Result<Self> {
// If index controller metadata is present, we return the env, otherwise, we create a new
// metadata from scratch before returning a new env.
let path = path.as_ref().to_path_buf();
let env = match IndexControllerMeta::from_path(&path)? {
Some(meta) => meta.open_options.open(INDEXES_CONTROLLER_FILENAME)?,
None => {
let open_options = EnvOpenOptions::new()
.map_size(page_size::get() * 1000);
let env = open_options.open(INDEXES_CONTROLLER_FILENAME)?;
let created_at = Utc::now();
let meta = IndexControllerMeta { open_options: open_options.clone(), created_at };
meta.to_path(path)?;
env
}
};
let indexes = DashMap::new();
let indexes_db = match env.open_database(Some(INDEXES_DB_NAME))? {
Some(indexes_db) => indexes_db,
None => env.create_database(Some(INDEXES_DB_NAME))?,
};
Ok(Self { env, indexes, indexes_db, update_store, path })
}
pub fn get_or_create<S: AsRef<str>>(&mut self, name: S) -> Result<IndexView<'_, U>> {
todo!()
}
/// Get an index with read access to the db. The index are lazily loaded, meaning that we first
/// check for its exixtence in the indexes map, and if it doesn't exist, the index db is check
/// for metadata to launch the index.
pub fn get<S: AsRef<str>>(&self, name: S) -> Result<Option<IndexView<'_, U>>> {
let update_store = &self.update_store;
match self.indexes.get(name.as_ref()) {
Some(index) => {
let txn = index.read_txn()?;
Ok(Some(IndexView { index, update_store, txn }))
}
None => {
let txn = self.env.read_txn()?;
match self.indexes_db.get(&txn, name.as_ref())? {
Some(meta) => {
let index = meta.open_index(self.path)?;
self.indexes.insert(name.as_ref().to_owned(), index);
// TODO: create index view
match self.indexes.get(name.as_ref()) {
Some(index) => {
let txn = index.read_txn()?;
Ok(Some(IndexView { index, txn, update_store }))
}
None => Ok(None)
}
}
None => Ok(None)
}
}
}
}
pub fn get_mut<S: AsRef<str>>(&self, name: S) -> Result<Option<IndexView<'_, U>>> {
todo!()
}
pub async fn delete_index<S: AsRef<str>>(&self, name:S) -> Result<()> {
todo!()
}
pub async fn list_indices(&self) -> Result<Vec<(String, IndexMetadata)>> {
todo!()
}
pub async fn rename_index(&self, old: &str, new: &str) -> Result<()> {
/// Apply an update to the given index. This method can be called when an update is ready to be
/// processed
fn handle_update<S: AsRef<str>>(
&self,
_index: S,
_update_id: u64,
_meta: Processing<UpdateMeta>,
_content: &[u8]
) -> Result<Processed<UpdateMeta, UpdateResult>, Failed<UpdateMeta, String>> {
todo!()
}
}

49
src/index_controller/update_store/mod.rs Normal file
View File

@ -0,0 +1,49 @@
use std::ops::Deref;
use super::{IndexStore, IndexController};
pub struct UpdateStore {
index_store: IndexStore,
}
impl Deref for UpdateStore {
type Target = IndexStore;
fn deref(&self) -> &Self::Target {
&self.index_store
}
}
impl UpdateStore {
pub fn new(index_store: IndexStore) -> Self {
Self { index_store }
}
}
impl IndexController for UpdateStore {
fn add_documents<S: AsRef<str>>(
&self,
_index: S,
_method: milli::update::IndexDocumentsMethod,
_format: milli::update::UpdateFormat,
_data: &[u8],
) -> anyhow::Result<crate::index_controller::UpdateStatusResponse> {
todo!()
}
fn update_settings<S: AsRef<str>>(&self, _index_uid: S, _settings: crate::index_controller::Settings) -> anyhow::Result<crate::index_controller::UpdateStatusResponse> {
todo!()
}
fn create_index<S: AsRef<str>>(&self, _index_uid: S) -> anyhow::Result<()> {
todo!()
}
fn delete_index<S: AsRef<str>>(&self, _index_uid: S) -> anyhow::Result<()> {
todo!()
}
fn swap_indices<S1: AsRef<str>, S2: AsRef<str>>(&self, _index1_uid: S1, _index2_uid: S2) -> anyhow::Result<()> {
todo!()
}
}

2
src/lib.rs
View File

@ -5,7 +5,7 @@ pub mod error;
pub mod helpers;
pub mod option;
pub mod routes;
mod updates;
//mod updates;
mod index_controller;
use actix_http::Error;

52
src/option.rs
View File

@ -9,10 +9,60 @@ use rustls::{
AllowAnyAnonymousOrAuthenticatedClient, AllowAnyAuthenticatedClient, NoClientAuth,
RootCertStore,
};
use grenad::CompressionType;
use structopt::StructOpt;
use crate::updates::IndexerOpts;
#[derive(Debug, Clone, StructOpt)]
pub struct IndexerOpts {
/// The amount of documents to skip before printing
/// a log regarding the indexing advancement.
#[structopt(long, default_value = "100000")] // 100k
pub log_every_n: usize,
/// MTBL max number of chunks in bytes.
#[structopt(long)]
pub max_nb_chunks: Option<usize>,
/// The maximum amount of memory to use for the MTBL buffer. It is recommended
/// to use something like 80%-90% of the available memory.
///
/// It is automatically split by the number of jobs e.g. if you use 7 jobs
/// and 7 GB of max memory, each thread will use a maximum of 1 GB.
#[structopt(long, default_value = "7 GiB")]
pub max_memory: Byte,
/// Size of the linked hash map cache when indexing.
/// The bigger it is, the faster the indexing is but the more memory it takes.
#[structopt(long, default_value = "500")]
pub linked_hash_map_size: usize,
/// The name of the compression algorithm to use when compressing intermediate
/// chunks during indexing documents.
///
/// Choosing a fast algorithm will make the indexing faster but may consume more memory.
#[structopt(long, default_value = "snappy", possible_values = &["snappy", "zlib", "lz4", "lz4hc", "zstd"])]
pub chunk_compression_type: CompressionType,
/// The level of compression of the chosen algorithm.
#[structopt(long, requires = "chunk-compression-type")]
pub chunk_compression_level: Option<u32>,
/// The number of bytes to remove from the begining of the chunks while reading/sorting
/// or merging them.
///
/// File fusing must only be enable on file systems that support the `FALLOC_FL_COLLAPSE_RANGE`,
/// (i.e. ext4 and XFS). File fusing will only work if the `enable-chunk-fusing` is set.
#[structopt(long, default_value = "4 GiB")]
pub chunk_fusing_shrink_size: Byte,
/// Enable the chunk fusing or not, this reduces the amount of disk used by a factor of 2.
#[structopt(long)]
pub enable_chunk_fusing: bool,
/// Number of parallel jobs for indexing, defaults to # of CPUs.
#[structopt(long)]
pub indexing_jobs: Option<usize>,
}
const POSSIBLE_ENV: [&str; 2] = ["development", "production"];
#[derive(Debug, Clone, StructOpt)]

2
src/routes/document.rs
View File

@ -122,7 +122,7 @@ async fn add_documents_json(
) -> Result<HttpResponse, ResponseError> {
let addition_result = data
.add_documents(
&path.index_uid,
path.into_inner().index_uid,
IndexDocumentsMethod::UpdateDocuments,
UpdateFormat::Json,
body

62
src/routes/index.rs
View File

@ -1,7 +1,7 @@
use actix_web::{delete, get, post, put};
use actix_web::{web, HttpResponse};
use chrono::{DateTime, Utc};
use log::error;
//use log::error;
use serde::{Deserialize, Serialize};
use crate::Data;
@ -94,8 +94,8 @@ async fn delete_index(
#[derive(Deserialize)]
struct UpdateParam {
index_uid: String,
update_id: u64,
_index_uid: String,
_update_id: u64,
}
#[get(
@ -103,39 +103,41 @@ struct UpdateParam {
wrap = "Authentication::Private"
)]
async fn get_update_status(
data: web::Data<Data>,
path: web::Path<UpdateParam>,
_data: web::Data<Data>,
_path: web::Path<UpdateParam>,
) -> Result<HttpResponse, ResponseError> {
let result = data.get_update_status(&path.index_uid, path.update_id);
match result {
Ok(Some(meta)) => {
let json = serde_json::to_string(&meta).unwrap();
Ok(HttpResponse::Ok().body(json))
}
Ok(None) => {
todo!()
}
Err(e) => {
error!("{}", e);
todo!()
}
}
//let result = data.get_update_status(&path.index_uid, path.update_id);
//match result {
//Ok(Some(meta)) => {
//let json = serde_json::to_string(&meta).unwrap();
//Ok(HttpResponse::Ok().body(json))
//}
//Ok(None) => {
//todo!()
//}
//Err(e) => {
//error!("{}", e);
//todo!()
//}
//}
}
#[get("/indexes/{index_uid}/updates", wrap = "Authentication::Private")]
async fn get_all_updates_status(
data: web::Data<Data>,
path: web::Path<IndexParam>,
_data: web::Data<Data>,
_path: web::Path<IndexParam>,
) -> Result<HttpResponse, ResponseError> {
let result = data.get_updates_status(&path.index_uid);
match result {
Ok(metas) => {
let json = serde_json::to_string(&metas).unwrap();
Ok(HttpResponse::Ok().body(json))
}
Err(e) => {
error!("{}", e);
todo!()
}
}
//let result = data.get_updates_status(&path.index_uid);
//match result {
//Ok(metas) => {
//let json = serde_json::to_string(&metas).unwrap();
//Ok(HttpResponse::Ok().body(json))
//}
//Err(e) => {
//error!("{}", e);
//todo!()
//}
//}
}

14
src/routes/settings/mod.rs
View File

@ -3,7 +3,7 @@ use log::error;
use crate::Data;
use crate::error::ResponseError;
use crate::updates::Settings;
use crate::index_controller::Settings;
use crate::helpers::Authentication;
#[macro_export]
@ -15,19 +15,19 @@ macro_rules! make_setting_route {
use crate::data;
use crate::error::ResponseError;
use crate::helpers::Authentication;
use crate::updates::Settings;
use crate::index_controller::Settings;
#[actix_web::delete($route, wrap = "Authentication::Private")]
pub async fn delete(
data: web::Data<data::Data>,
index_uid: web::Path<String>,
) -> Result<HttpResponse, ResponseError> {
use crate::updates::Settings;
use crate::index_controller::Settings;
let settings = Settings {
$attr: Some(None),
..Default::default()
};
match data.update_settings(index_uid.as_ref(), settings).await {
match data.update_settings(index_uid.into_inner(), settings).await {
Ok(update_status) => {
let json = serde_json::to_string(&update_status).unwrap();
Ok(HttpResponse::Ok().body(json))
@ -50,7 +50,7 @@ macro_rules! make_setting_route {
..Default::default()
};
match data.update_settings(index_uid.as_ref(), settings).await {
match data.update_settings(index_uid.into_inner(), settings).await {
Ok(update_status) => {
let json = serde_json::to_string(&update_status).unwrap();
Ok(HttpResponse::Ok().body(json))
@ -141,7 +141,7 @@ async fn update_all(
index_uid: web::Path<String>,
body: web::Json<Settings>,
) -> Result<HttpResponse, ResponseError> {
match data.update_settings(index_uid.as_ref(), body.into_inner()).await {
match data.update_settings(index_uid.into_inner(), body.into_inner()).await {
Ok(update_result) => {
let json = serde_json::to_string(&update_result).unwrap();
Ok(HttpResponse::Ok().body(json))
@ -176,7 +176,7 @@ async fn delete_all(
index_uid: web::Path<String>,
) -> Result<HttpResponse, ResponseError> {
let settings = Settings::cleared();
match data.update_settings(index_uid.as_ref(), settings).await {
match data.update_settings(index_uid.into_inner(), settings).await {
Ok(update_result) => {
let json = serde_json::to_string(&update_result).unwrap();
Ok(HttpResponse::Ok().body(json))

12
src/updates/mod.rs
View File

@ -1,10 +1,10 @@
mod settings;
mod update_store;
pub use settings::{Settings, Facets};
use std::io;
use std::sync::Arc;
use std::ops::Deref;
use std::fs::create_dir_all;
use std::collections::HashMap;
@ -55,16 +55,6 @@ pub struct UpdateQueue {
inner: Arc<UpdateStore<UpdateMeta, UpdateResult, String>>,
}
impl crate::index_controller::UpdateStore for UpdateQueue {}
impl Deref for UpdateQueue {
type Target = Arc<UpdateStore<UpdateMeta, UpdateResult, String>>;
fn deref(&self) -> &Self::Target {
&self.inner
}
}
#[derive(Debug, Clone, StructOpt)]
pub struct IndexerOpts {
/// The amount of documents to skip before printing

581
src/updates/update_store.rs Normal file
View File

@ -0,0 +1,581 @@
use std::path::Path;
use std::sync::{Arc, RwLock};
use crossbeam_channel::Sender;
use heed::types::{OwnedType, DecodeIgnore, SerdeJson, ByteSlice};
use heed::{EnvOpenOptions, Env, Database};
use serde::{Serialize, Deserialize};
use chrono::{DateTime, Utc};
type BEU64 = heed::zerocopy::U64<heed::byteorder::BE>;
#[derive(Clone)]
pub struct UpdateStore<M, N, E> {
env: Env,
pending_meta: Database<OwnedType<BEU64>, SerdeJson<Pending<M>>>,
pending: Database<OwnedType<BEU64>, ByteSlice>,
processed_meta: Database<OwnedType<BEU64>, SerdeJson<Processed<M, N>>>,
failed_meta: Database<OwnedType<BEU64>, SerdeJson<Failed<M, E>>>,
aborted_meta: Database<OwnedType<BEU64>, SerdeJson<Aborted<M>>>,
processing: Arc<RwLock<Option<Processing<M>>>>,
notification_sender: Sender<()>,
}
pub trait UpdateHandler<M, N, E> {
fn handle_update(&mut self, update_id: u64, meta: Processing<M>, content: &[u8]) -> Result<Processed<M, N>, Failed<M, E>>;
}
impl<M, N, F, E> UpdateHandler<M, N, E> for F
where F: FnMut(u64, Processing<M>, &[u8]) -> Result<Processed<M, N>, Failed<M, E>> + Send + 'static {
fn handle_update(&mut self, update_id: u64, meta: Processing<M>, content: &[u8]) -> Result<Processed<M, N>, Failed<M, E>> {
self(update_id, meta, content)
}
}
impl<M: 'static, N: 'static, E: 'static> UpdateStore<M, N, E> {
pub fn open<P, U>(
size: Option<usize>,
path: P,
mut update_handler: U,
) -> heed::Result<Arc<UpdateStore<M, N, E>>>
where
P: AsRef<Path>,
U: UpdateHandler<M, N, E> + Send + 'static,
M: for<'a> Deserialize<'a> + Serialize + Send + Sync + Clone,
N: Serialize,
E: Serialize,
{
let mut options = EnvOpenOptions::new();
if let Some(size) = size {
options.map_size(size);
}
options.max_dbs(5);
let env = options.open(path)?;
let pending_meta = env.create_database(Some("pending-meta"))?;
let pending = env.create_database(Some("pending"))?;
let processed_meta = env.create_database(Some("processed-meta"))?;
let aborted_meta = env.create_database(Some("aborted-meta"))?;
let failed_meta = env.create_database(Some("failed-meta"))?;
let processing = Arc::new(RwLock::new(None));
let (notification_sender, notification_receiver) = crossbeam_channel::bounded(1);
// Send a first notification to trigger the process.
let _ = notification_sender.send(());
let update_store = Arc::new(UpdateStore {
env,
pending,
pending_meta,
processed_meta,
aborted_meta,
notification_sender,
failed_meta,
processing,
});
let update_store_cloned = update_store.clone();
std::thread::spawn(move || {
// Block and wait for something to process.
for () in notification_receiver {
loop {
match update_store_cloned.process_pending_update(&mut update_handler) {
Ok(Some(_)) => (),
Ok(None) => break,
Err(e) => eprintln!("error while processing update: {}", e),
}
}
}
});
Ok(update_store)
}
/// Returns the new biggest id to use to store the new update.
fn new_update_id(&self, txn: &heed::RoTxn) -> heed::Result<u64> {
let last_pending = self.pending_meta
.remap_data_type::<DecodeIgnore>()
.last(txn)?
.map(|(k, _)| k.get());
let last_processed = self.processed_meta
.remap_data_type::<DecodeIgnore>()
.last(txn)?
.map(|(k, _)| k.get());
let last_aborted = self.aborted_meta
.remap_data_type::<DecodeIgnore>()
.last(txn)?
.map(|(k, _)| k.get());
let last_update_id = [last_pending, last_processed, last_aborted]
.iter()
.copied()
.flatten()
.max();
match last_update_id {
Some(last_id) => Ok(last_id + 1),
None => Ok(0),
}
}
/// Registers the update content in the pending store and the meta
/// into the pending-meta store. Returns the new unique update id.
pub fn register_update(&self, meta: M, content: &[u8]) -> heed::Result<Pending<M>>
where M: Serialize,
{
let mut wtxn = self.env.write_txn()?;
// We ask the update store to give us a new update id, this is safe,
// no other update can have the same id because we use a write txn before
// asking for the id and registering it so other update registering
// will be forced to wait for a new write txn.
let update_id = self.new_update_id(&wtxn)?;
let update_key = BEU64::new(update_id);
let meta = Pending::new(meta, update_id);
self.pending_meta.put(&mut wtxn, &update_key, &meta)?;
self.pending.put(&mut wtxn, &update_key, content)?;
wtxn.commit()?;
if let Err(e) = self.notification_sender.try_send(()) {
assert!(!e.is_disconnected(), "update notification channel is disconnected");
}
Ok(meta)
}
/// Executes the user provided function on the next pending update (the one with the lowest id).
/// This is asynchronous as it let the user process the update with a read-only txn and
/// only writing the result meta to the processed-meta store *after* it has been processed.
fn process_pending_update<U>(&self, handler: &mut U) -> heed::Result<Option<()>>
where
U: UpdateHandler<M, N, E>,
M: for<'a> Deserialize<'a> + Serialize + Clone,
N: Serialize,
E: Serialize,
{
// Create a read transaction to be able to retrieve the pending update in order.
let rtxn = self.env.read_txn()?;
let first_meta = self.pending_meta.first(&rtxn)?;
// If there is a pending update we process and only keep
// a reader while processing it, not a writer.
match first_meta {
Some((first_id, pending)) => {
let first_content = self.pending
.get(&rtxn, &first_id)?
.expect("associated update content");
// we cahnge the state of the update from pending to processing before we pass it
// to the update handler. Processing store is non persistent to be able recover
// from a failure
let processing = pending.processing();
self.processing
.write()
.unwrap()
.replace(processing.clone());
// Process the pending update using the provided user function.
let result = handler.handle_update(first_id.get(), processing, first_content);
drop(rtxn);
// Once the pending update have been successfully processed
// we must remove the content from the pending and processing stores and
// write the *new* meta to the processed-meta store and commit.
let mut wtxn = self.env.write_txn()?;
self.processing
.write()
.unwrap()
.take();
self.pending_meta.delete(&mut wtxn, &first_id)?;
self.pending.delete(&mut wtxn, &first_id)?;
match result {
Ok(processed) => self.processed_meta.put(&mut wtxn, &first_id, &processed)?,
Err(failed) => self.failed_meta.put(&mut wtxn, &first_id, &failed)?,
}
wtxn.commit()?;
Ok(Some(()))
},
None => Ok(None)
}
}
/// The id and metadata of the update that is currently being processed,
/// `None` if no update is being processed.
pub fn processing_update(&self) -> heed::Result<Option<(u64, Pending<M>)>>
where M: for<'a> Deserialize<'a>,
{
let rtxn = self.env.read_txn()?;
match self.pending_meta.first(&rtxn)? {
Some((key, meta)) => Ok(Some((key.get(), meta))),
None => Ok(None),
}
}
/// Execute the user defined function with the meta-store iterators, the first
/// iterator is the *processed* meta one, the second the *aborted* meta one
/// and, the last is the *pending* meta one.
pub fn iter_metas<F, T>(&self, mut f: F) -> heed::Result<T>
where
M: for<'a> Deserialize<'a> + Clone,
N: for<'a> Deserialize<'a>,
F: for<'a> FnMut(
Option<Processing<M>>,
heed::RoIter<'a, OwnedType<BEU64>, SerdeJson<Processed<M, N>>>,
heed::RoIter<'a, OwnedType<BEU64>, SerdeJson<Aborted<M>>>,
heed::RoIter<'a, OwnedType<BEU64>, SerdeJson<Pending<M>>>,
heed::RoIter<'a, OwnedType<BEU64>, SerdeJson<Failed<M, E>>>,
) -> heed::Result<T>,
{
let rtxn = self.env.read_txn()?;
// We get the pending, processed and aborted meta iterators.
let processed_iter = self.processed_meta.iter(&rtxn)?;
let aborted_iter = self.aborted_meta.iter(&rtxn)?;
let pending_iter = self.pending_meta.iter(&rtxn)?;
let processing = self.processing.read().unwrap().clone();
let failed_iter = self.failed_meta.iter(&rtxn)?;
// We execute the user defined function with both iterators.
(f)(processing, processed_iter, aborted_iter, pending_iter, failed_iter)
}
/// Returns the update associated meta or `None` if the update doesn't exist.
pub fn meta(&self, update_id: u64) -> heed::Result<Option<UpdateStatus<M, N, E>>>
where
M: for<'a> Deserialize<'a> + Clone,
N: for<'a> Deserialize<'a>,
E: for<'a> Deserialize<'a>,
{
let rtxn = self.env.read_txn()?;
let key = BEU64::new(update_id);
if let Some(ref meta) = *self.processing.read().unwrap() {
if meta.id() == update_id {
return Ok(Some(UpdateStatus::Processing(meta.clone())));
}
}
println!("pending");
if let Some(meta) = self.pending_meta.get(&rtxn, &key)? {
return Ok(Some(UpdateStatus::Pending(meta)));
}
println!("processed");
if let Some(meta) = self.processed_meta.get(&rtxn, &key)? {
return Ok(Some(UpdateStatus::Processed(meta)));
}
if let Some(meta) = self.aborted_meta.get(&rtxn, &key)? {
return Ok(Some(UpdateStatus::Aborted(meta)));
}
if let Some(meta) = self.failed_meta.get(&rtxn, &key)? {
return Ok(Some(UpdateStatus::Failed(meta)));
}
Ok(None)
}
/// Aborts an update, an aborted update content is deleted and
/// the meta of it is moved into the aborted updates database.
///
/// Trying to abort an update that is currently being processed, an update
/// that as already been processed or which doesn't actually exist, will
/// return `None`.
pub fn abort_update(&self, update_id: u64) -> heed::Result<Option<Aborted<M>>>
where M: Serialize + for<'a> Deserialize<'a>,
{
let mut wtxn = self.env.write_txn()?;
let key = BEU64::new(update_id);
// We cannot abort an update that is currently being processed.
if self.pending_meta.first(&wtxn)?.map(|(key, _)| key.get()) == Some(update_id) {
return Ok(None);
}
let pending = match self.pending_meta.get(&wtxn, &key)? {
Some(meta) => meta,
None => return Ok(None),
};
let aborted = pending.abort();
self.aborted_meta.put(&mut wtxn, &key, &aborted)?;
self.pending_meta.delete(&mut wtxn, &key)?;
self.pending.delete(&mut wtxn, &key)?;
wtxn.commit()?;
Ok(Some(aborted))
}
/// Aborts all the pending updates, and not the one being currently processed.
/// Returns the update metas and ids that were successfully aborted.
pub fn abort_pendings(&self) -> heed::Result<Vec<(u64, Aborted<M>)>>
where M: Serialize + for<'a> Deserialize<'a>,
{
let mut wtxn = self.env.write_txn()?;
let mut aborted_updates = Vec::new();
// We skip the first pending update as it is currently being processed.
for result in self.pending_meta.iter(&wtxn)?.skip(1) {
let (key, pending) = result?;
let id = key.get();
aborted_updates.push((id, pending.abort()));
}
for (id, aborted) in &aborted_updates {
let key = BEU64::new(*id);
self.aborted_meta.put(&mut wtxn, &key, &aborted)?;
self.pending_meta.delete(&mut wtxn, &key)?;
self.pending.delete(&mut wtxn, &key)?;
}
wtxn.commit()?;
Ok(aborted_updates)
}
}
#[derive(Debug, PartialEq, Eq, Hash, Serialize, Deserialize, Clone)]
pub struct Pending<M> {
update_id: u64,
meta: M,
enqueued_at: DateTime<Utc>,
}
impl<M> Pending<M> {
fn new(meta: M, update_id: u64) -> Self {
Self {
enqueued_at: Utc::now(),
meta,
update_id,
}
}
pub fn processing(self) -> Processing<M> {
Processing {
from: self,
started_processing_at: Utc::now(),
}
}
pub fn abort(self) -> Aborted<M> {
Aborted {
from: self,
aborted_at: Utc::now(),
}
}
pub fn meta(&self) -> &M {
&self.meta
}
pub fn id(&self) -> u64 {
self.update_id
}
}
#[derive(Debug, PartialEq, Eq, Hash, Serialize, Deserialize, Clone)]
pub struct Processed<M, N> {
success: N,
processed_at: DateTime<Utc>,
#[serde(flatten)]
from: Processing<M>,
}
impl<M, N> Processed<M, N> {
fn id(&self) -> u64 {
self.from.id()
}
}
#[derive(Debug, PartialEq, Eq, Hash, Serialize, Deserialize, Clone)]
pub struct Processing<M> {
#[serde(flatten)]
from: Pending<M>,
started_processing_at: DateTime<Utc>,
}
impl<M> Processing<M> {
pub fn id(&self) -> u64 {
self.from.id()
}
pub fn meta(&self) -> &M {
self.from.meta()
}
pub fn process<N>(self, meta: N) -> Processed<M, N> {
Processed {
success: meta,
from: self,
processed_at: Utc::now(),
}
}
pub fn fail<E>(self, error: E) -> Failed<M, E> {
Failed {
from: self,
error,
failed_at: Utc::now(),
}
}
}
#[derive(Debug, PartialEq, Eq, Hash, Serialize, Deserialize, Clone)]
pub struct Aborted<M> {
#[serde(flatten)]
from: Pending<M>,
aborted_at: DateTime<Utc>,
}
impl<M> Aborted<M> {
fn id(&self) -> u64 {
self.from.id()
}
}
#[derive(Debug, PartialEq, Eq, Hash, Serialize, Deserialize, Clone)]
pub struct Failed<M, E> {
#[serde(flatten)]
from: Processing<M>,
error: E,
failed_at: DateTime<Utc>,
}
impl<M, E> Failed<M, E> {
fn id(&self) -> u64 {
self.from.id()
}
}
#[derive(Debug, PartialEq, Eq, Hash, Serialize)]
#[serde(tag = "status")]
pub enum UpdateStatus<M, N, E> {
Processing(Processing<M>),
Pending(Pending<M>),
Processed(Processed<M, N>),
Aborted(Aborted<M>),
Failed(Failed<M, E>),
}
impl<M, N, E> UpdateStatus<M, N, E> {
pub fn id(&self) -> u64 {
match self {
UpdateStatus::Processing(u) => u.id(),
UpdateStatus::Pending(u) => u.id(),
UpdateStatus::Processed(u) => u.id(),
UpdateStatus::Aborted(u) => u.id(),
UpdateStatus::Failed(u) => u.id(),
}
}
}
impl<M, N, E> From<Pending<M>> for UpdateStatus<M, N, E> {
fn from(other: Pending<M>) -> Self {
Self::Pending(other)
}
}
impl<M, N, E> From<Aborted<M>> for UpdateStatus<M, N, E> {
fn from(other: Aborted<M>) -> Self {
Self::Aborted(other)
}
}
impl<M, N, E> From<Processed<M, N>> for UpdateStatus<M, N, E> {
fn from(other: Processed<M, N>) -> Self {
Self::Processed(other)
}
}
impl<M, N, E> From<Processing<M>> for UpdateStatus<M, N, E> {
fn from(other: Processing<M>) -> Self {
Self::Processing(other)
}
}
impl<M, N, E> From<Failed<M, E>> for UpdateStatus<M, N, E> {
fn from(other: Failed<M, E>) -> Self {
Self::Failed(other)
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::thread;
use std::time::{Duration, Instant};
#[test]
fn simple() {
let dir = tempfile::tempdir().unwrap();
let update_store = UpdateStore::open(None, dir, |_id, meta: Processing<String>, _content: &_| -> Result<_, Failed<_, ()>> {
let new_meta = meta.meta().to_string() + " processed";
let processed = meta.process(new_meta);
Ok(processed)
}).unwrap();
let meta = String::from("kiki");
let update = update_store.register_update(meta, &[]).unwrap();
thread::sleep(Duration::from_millis(100));
let meta = update_store.meta(update.id()).unwrap().unwrap();
if let UpdateStatus::Processed(Processed { success, .. }) = meta {
assert_eq!(success, "kiki processed");
} else {
panic!()
}
}
#[test]
#[ignore]
fn long_running_update() {
let dir = tempfile::tempdir().unwrap();
let update_store = UpdateStore::open(None, dir, |_id, meta: Processing<String>, _content:&_| -> Result<_, Failed<_, ()>> {
thread::sleep(Duration::from_millis(400));
let new_meta = meta.meta().to_string() + "processed";
let processed = meta.process(new_meta);
Ok(processed)
}).unwrap();
let before_register = Instant::now();
let meta = String::from("kiki");
let update_kiki = update_store.register_update(meta, &[]).unwrap();
assert!(before_register.elapsed() < Duration::from_millis(200));
let meta = String::from("coco");
let update_coco = update_store.register_update(meta, &[]).unwrap();
assert!(before_register.elapsed() < Duration::from_millis(200));
let meta = String::from("cucu");
let update_cucu = update_store.register_update(meta, &[]).unwrap();
assert!(before_register.elapsed() < Duration::from_millis(200));
thread::sleep(Duration::from_millis(400 * 3 + 100));
let meta = update_store.meta(update_kiki.id()).unwrap().unwrap();
if let UpdateStatus::Processed(Processed { success, .. }) = meta {
assert_eq!(success, "kiki processed");
} else {
panic!()
}
let meta = update_store.meta(update_coco.id()).unwrap().unwrap();
if let UpdateStatus::Processed(Processed { success, .. }) = meta {
assert_eq!(success, "coco processed");
} else {
panic!()
}
let meta = update_store.meta(update_cucu.id()).unwrap().unwrap();
if let UpdateStatus::Processed(Processed { success, .. }) = meta {
assert_eq!(success, "cucu processed");
} else {
panic!()
}
}
}