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Code Issues Releases Wiki Activity

Merge pull request #175 from meilisearch/moving-back-to-sled

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Moving back to sled
This commit is contained in:
Clément Renault 2019-09-05 13:14:48 +02:00 committed by GitHub
commit fd880e0a0e
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31 changed files with 1328 additions and 1110 deletions
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18
meilidb-data/Cargo.toml
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@ -5,28 +5,34 @@ authors = ["Kerollmops <renault.cle@gmail.com>"]
edition = "2018" edition = "2018"
[dependencies] [dependencies]
arc-swap = "0.3.11" arc-swap = "0.4.2"
bincode = "1.1.2" bincode = "1.1.4"
deunicode = "1.0.0" deunicode = "1.0.0"
hashbrown = { version = "0.2.2", features = ["serde"] } hashbrown = { version = "0.6.0", features = ["serde"] }
log = "0.4.6"
meilidb-core = { path = "../meilidb-core", version = "0.1.0" } meilidb-core = { path = "../meilidb-core", version = "0.1.0" }
meilidb-schema = { path = "../meilidb-schema", version = "0.1.0" } meilidb-schema = { path = "../meilidb-schema", version = "0.1.0" }
meilidb-tokenizer = { path = "../meilidb-tokenizer", version = "0.1.0" } meilidb-tokenizer = { path = "../meilidb-tokenizer", version = "0.1.0" }
ordered-float = { version = "1.0.2", features = ["serde"] } ordered-float = { version = "1.0.2", features = ["serde"] }
rocksdb = { version = "0.12.2", default-features = false }
sdset = "0.3.2" sdset = "0.3.2"
serde = { version = "1.0.99", features = ["derive"] } serde = { version = "1.0.99", features = ["derive"] }
serde_json = "1.0.40" serde_json = "1.0.40"
siphasher = "0.3.0" siphasher = "0.3.0"
zerocopy = "0.2.2" sled = "0.26.0"
zerocopy = "0.2.8"
[dependencies.rmp-serde] [dependencies.rmp-serde]
git = "https://github.com/3Hren/msgpack-rust.git" git = "https://github.com/3Hren/msgpack-rust.git"
rev = "40b3d48" rev = "40b3d48"
[dependencies.rmpv]
git = "https://github.com/3Hren/msgpack-rust.git"
rev = "40b3d48"
features = ["with-serde"]
[dependencies.fst] [dependencies.fst]
git = "https://github.com/Kerollmops/fst.git" git = "https://github.com/Kerollmops/fst.git"
branch = "arc-byte-slice" branch = "arc-byte-slice"
[dev-dependencies] [dev-dependencies]
tempfile = "3.0.7" tempfile = "3.1.0"

13
meilidb-data/src/database/custom_settings.rs
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@ -1,13 +0,0 @@
use std::ops::Deref;
use crate::database::raw_index::InnerRawIndex;
#[derive(Clone)]
pub struct CustomSettings(pub(crate) InnerRawIndex);
impl Deref for CustomSettings {
type Target = InnerRawIndex;
fn deref(&self) -> &Self::Target {
&self.0
}
}

134
meilidb-data/src/database/documents_addition.rs
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@ -1,134 +0,0 @@
use std::collections::HashSet;
use std::sync::Arc;
use meilidb_core::DocumentId;
use fst::{SetBuilder, set::OpBuilder};
use sdset::{SetOperation, duo::Union};
use crate::indexer::Indexer;
use crate::serde::{extract_document_id, Serializer, RamDocumentStore};
use crate::RankedMap;
use super::{Error, Index, InnerIndex, DocumentsDeletion};
pub struct DocumentsAddition<'a> {
inner: &'a Index,
document_ids: HashSet<DocumentId>,
document_store: RamDocumentStore,
indexer: Indexer,
ranked_map: RankedMap,
}
impl<'a> DocumentsAddition<'a> {
pub fn new(inner: &'a Index, ranked_map: RankedMap) -> DocumentsAddition<'a> {
DocumentsAddition {
inner,
document_ids: HashSet::new(),
document_store: RamDocumentStore::new(),
indexer: Indexer::new(),
ranked_map,
}
}
pub fn update_document<D>(&mut self, document: D) -> Result<(), Error>
where D: serde::Serialize,
{
let schema = &self.inner.lease_inner().schema;
let identifier = schema.identifier_name();
let document_id = match extract_document_id(identifier, &document)? {
Some(id) => id,
None => return Err(Error::MissingDocumentId),
};
// 1. store the document id for future deletion
self.document_ids.insert(document_id);
// 2. index the document fields in ram stores
let serializer = Serializer {
schema,
document_store: &mut self.document_store,
indexer: &mut self.indexer,
ranked_map: &mut self.ranked_map,
document_id,
};
document.serialize(serializer)?;
Ok(())
}
pub fn finalize(self) -> Result<(), Error> {
let lease_inner = self.inner.lease_inner();
let docs_words = &lease_inner.raw.docs_words;
let documents = &lease_inner.raw.documents;
let main = &lease_inner.raw.main;
let words = &lease_inner.raw.words;
// 1. remove the previous documents match indexes
let mut documents_deletion = DocumentsDeletion::new(self.inner, self.ranked_map.clone());
documents_deletion.extend(self.document_ids);
documents_deletion.finalize()?;
// 2. insert new document attributes in the database
for ((id, attr), value) in self.document_store.into_inner() {
documents.set_document_field(id, attr, value)?;
}
let indexed = self.indexer.build();
let mut delta_words_builder = SetBuilder::memory();
for (word, delta_set) in indexed.words_doc_indexes {
delta_words_builder.insert(&word).unwrap();
let set = match words.doc_indexes(&word)? {
Some(set) => Union::new(&set, &delta_set).into_set_buf(),
None => delta_set,
};
words.set_doc_indexes(&word, &set)?;
}
for (id, words) in indexed.docs_words {
docs_words.set_doc_words(id, &words)?;
}
let delta_words = delta_words_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap();
let words = match main.words_set()? {
Some(words) => {
let op = OpBuilder::new()
.add(words.stream())
.add(delta_words.stream())
.r#union();
let mut words_builder = SetBuilder::memory();
words_builder.extend_stream(op).unwrap();
words_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap()
},
None => delta_words,
};
main.set_words_set(&words)?;
main.set_ranked_map(&self.ranked_map)?;
// update the "consistent" view of the Index
let words = Arc::new(words);
let ranked_map = self.ranked_map;
let synonyms = lease_inner.synonyms.clone();
let schema = lease_inner.schema.clone();
let raw = lease_inner.raw.clone();
lease_inner.raw.compact();
let inner = InnerIndex { words, synonyms, schema, ranked_map, raw };
self.inner.0.store(Arc::new(inner));
Ok(())
}
}

139
meilidb-data/src/database/documents_deletion.rs
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@ -1,139 +0,0 @@
use std::collections::{HashMap, BTreeSet};
use std::sync::Arc;
use fst::{SetBuilder, Streamer};
use meilidb_core::DocumentId;
use sdset::{SetBuf, SetOperation, duo::DifferenceByKey};
use crate::RankedMap;
use crate::serde::extract_document_id;
use super::{Index, Error, InnerIndex};
pub struct DocumentsDeletion<'a> {
inner: &'a Index,
documents: Vec<DocumentId>,
ranked_map: RankedMap,
}
impl<'a> DocumentsDeletion<'a> {
pub fn new(inner: &'a Index, ranked_map: RankedMap) -> DocumentsDeletion {
DocumentsDeletion { inner, documents: Vec::new(), ranked_map }
}
fn delete_document_by_id(&mut self, id: DocumentId) {
self.documents.push(id);
}
pub fn delete_document<D>(&mut self, document: D) -> Result<(), Error>
where D: serde::Serialize,
{
let schema = &self.inner.lease_inner().schema;
let identifier = schema.identifier_name();
let document_id = match extract_document_id(identifier, &document)? {
Some(id) => id,
None => return Err(Error::MissingDocumentId),
};
self.delete_document_by_id(document_id);
Ok(())
}
pub fn finalize(mut self) -> Result<(), Error> {
let lease_inner = self.inner.lease_inner();
let docs_words = &lease_inner.raw.docs_words;
let documents = &lease_inner.raw.documents;
let main = &lease_inner.raw.main;
let schema = &lease_inner.schema;
let words = &lease_inner.raw.words;
let idset = SetBuf::from_dirty(self.documents);
// collect the ranked attributes according to the schema
let ranked_attrs: Vec<_> = schema.iter()
.filter_map(|(_, attr, prop)| {
if prop.is_ranked() { Some(attr) } else { None }
})
.collect();
let mut words_document_ids = HashMap::new();
for id in idset {
// remove all the ranked attributes from the ranked_map
for ranked_attr in &ranked_attrs {
self.ranked_map.remove(id, *ranked_attr);
}
if let Some(words) = docs_words.doc_words(id)? {
let mut stream = words.stream();
while let Some(word) = stream.next() {
let word = word.to_vec();
words_document_ids.entry(word).or_insert_with(Vec::new).push(id);
}
}
}
let mut removed_words = BTreeSet::new();
for (word, document_ids) in words_document_ids {
let document_ids = SetBuf::from_dirty(document_ids);
if let Some(doc_indexes) = words.doc_indexes(&word)? {
let op = DifferenceByKey::new(&doc_indexes, &document_ids, |d| d.document_id, |id| *id);
let doc_indexes = op.into_set_buf();
if !doc_indexes.is_empty() {
words.set_doc_indexes(&word, &doc_indexes)?;
} else {
words.del_doc_indexes(&word)?;
removed_words.insert(word);
}
}
for id in document_ids {
documents.del_all_document_fields(id)?;
docs_words.del_doc_words(id)?;
}
}
let removed_words = fst::Set::from_iter(removed_words).unwrap();
let words = match main.words_set()? {
Some(words_set) => {
let op = fst::set::OpBuilder::new()
.add(words_set.stream())
.add(removed_words.stream())
.difference();
let mut words_builder = SetBuilder::memory();
words_builder.extend_stream(op).unwrap();
words_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap()
},
None => fst::Set::default(),
};
main.set_words_set(&words)?;
main.set_ranked_map(&self.ranked_map)?;
// update the "consistent" view of the Index
let words = Arc::new(words);
let ranked_map = lease_inner.ranked_map.clone();
let synonyms = lease_inner.synonyms.clone();
let schema = lease_inner.schema.clone();
let raw = lease_inner.raw.clone();
lease_inner.raw.compact();
let inner = InnerIndex { words, synonyms, schema, ranked_map, raw };
self.inner.0.store(Arc::new(inner));
Ok(())
}
}
impl<'a> Extend<DocumentId> for DocumentsDeletion<'a> {
fn extend<T: IntoIterator<Item=DocumentId>>(&mut self, iter: T) {
self.documents.extend(iter)
}
}

90
meilidb-data/src/database/documents_index.rs
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@ -1,90 +0,0 @@
use std::convert::TryInto;
use meilidb_core::DocumentId;
use meilidb_schema::SchemaAttr;
use rocksdb::DBVector;
use crate::database::raw_index::InnerRawIndex;
use crate::document_attr_key::DocumentAttrKey;
#[derive(Clone)]
pub struct DocumentsIndex(pub(crate) InnerRawIndex);
impl DocumentsIndex {
pub fn document_field(&self, id: DocumentId, attr: SchemaAttr) -> Result<Option<DBVector>, rocksdb::Error> {
let key = DocumentAttrKey::new(id, attr).to_be_bytes();
self.0.get(key)
}
pub fn set_document_field(&self, id: DocumentId, attr: SchemaAttr, value: Vec<u8>) -> Result<(), rocksdb::Error> {
let key = DocumentAttrKey::new(id, attr).to_be_bytes();
self.0.set(key, value)?;
Ok(())
}
pub fn del_document_field(&self, id: DocumentId, attr: SchemaAttr) -> Result<(), rocksdb::Error> {
let key = DocumentAttrKey::new(id, attr).to_be_bytes();
self.0.delete(key)?;
Ok(())
}
pub fn del_all_document_fields(&self, id: DocumentId) -> Result<(), rocksdb::Error> {
let start = DocumentAttrKey::new(id, SchemaAttr::min()).to_be_bytes();
let end = DocumentAttrKey::new(id, SchemaAttr::max()).to_be_bytes();
self.0.delete_range(start, end)?;
Ok(())
}
pub fn document_fields(&self, id: DocumentId) -> DocumentFieldsIter {
let start = DocumentAttrKey::new(id, SchemaAttr::min()).to_be_bytes();
let end = DocumentAttrKey::new(id, SchemaAttr::max()).to_be_bytes();
let from = rocksdb::IteratorMode::From(&start[..], rocksdb::Direction::Forward);
let iter = self.0.iterator(from).unwrap();
DocumentFieldsIter(iter, end.to_vec())
}
pub fn len(&self) -> Result<usize, rocksdb::Error> {
let mut last_document_id = None;
let mut count = 0;
let from = rocksdb::IteratorMode::Start;
let iterator = self.0.iterator(from)?;
for (key, _) in iterator {
let slice = key.as_ref().try_into().unwrap();
let document_id = DocumentAttrKey::from_be_bytes(slice).document_id;
if Some(document_id) != last_document_id {
last_document_id = Some(document_id);
count += 1;
}
}
Ok(count)
}
}
pub struct DocumentFieldsIter<'a>(rocksdb::DBIterator<'a>, Vec<u8>);
impl<'a> Iterator for DocumentFieldsIter<'a> {
type Item = Result<(SchemaAttr, Box<[u8]>), rocksdb::Error>;
fn next(&mut self) -> Option<Self::Item> {
match self.0.next() {
Some((key, value)) => {
if key.as_ref() > self.1.as_ref() {
return None;
}
let slice: &[u8] = key.as_ref();
let array = slice.try_into().unwrap();
let key = DocumentAttrKey::from_be_bytes(array);
Some(Ok((key.attribute, value)))
},
None => None,
}
}
}

26
meilidb-data/src/database/error.rs
View File

@ -7,15 +7,17 @@ pub enum Error {
SchemaMissing, SchemaMissing,
WordIndexMissing, WordIndexMissing,
MissingDocumentId, MissingDocumentId,
RocksdbError(rocksdb::Error), SledError(sled::Error),
FstError(fst::Error), FstError(fst::Error),
RmpDecodeError(rmp_serde::decode::Error),
RmpEncodeError(rmp_serde::encode::Error),
BincodeError(bincode::Error), BincodeError(bincode::Error),
SerializerError(SerializerError), SerializerError(SerializerError),
} }
impl From<rocksdb::Error> for Error { impl From<sled::Error> for Error {
fn from(error: rocksdb::Error) -> Error { fn from(error: sled::Error) -> Error {
Error::RocksdbError(error) Error::SledError(error)
} }
} }
@ -25,6 +27,18 @@ impl From<fst::Error> for Error {
} }
} }
impl From<rmp_serde::decode::Error> for Error {
fn from(error: rmp_serde::decode::Error) -> Error {
Error::RmpDecodeError(error)
}
}
impl From<rmp_serde::encode::Error> for Error {
fn from(error: rmp_serde::encode::Error) -> Error {
Error::RmpEncodeError(error)
}
}
impl From<bincode::Error> for Error { impl From<bincode::Error> for Error {
fn from(error: bincode::Error) -> Error { fn from(error: bincode::Error) -> Error {
Error::BincodeError(error) Error::BincodeError(error)
@ -45,8 +59,10 @@ impl fmt::Display for Error {
SchemaMissing => write!(f, "this index does not have a schema"), SchemaMissing => write!(f, "this index does not have a schema"),
WordIndexMissing => write!(f, "this index does not have a word index"), WordIndexMissing => write!(f, "this index does not have a word index"),
MissingDocumentId => write!(f, "document id is missing"), MissingDocumentId => write!(f, "document id is missing"),
RocksdbError(e) => write!(f, "RocksDB error; {}", e), SledError(e) => write!(f, "Sled error; {}", e),
FstError(e) => write!(f, "fst error; {}", e), FstError(e) => write!(f, "fst error; {}", e),
RmpDecodeError(e) => write!(f, "rmp decode error; {}", e),
RmpEncodeError(e) => write!(f, "rmp encode error; {}", e),
BincodeError(e) => write!(f, "bincode error; {}", e), BincodeError(e) => write!(f, "bincode error; {}", e),
SerializerError(e) => write!(f, "serializer error; {}", e), SerializerError(e) => write!(f, "serializer error; {}", e),
} }

170
meilidb-data/src/database/index.rs
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@ -1,170 +0,0 @@
use sdset::SetBuf;
use std::collections::HashSet;
use std::sync::Arc;
use arc_swap::{ArcSwap, Lease};
use meilidb_core::criterion::Criteria;
use meilidb_core::{DocIndex, Store, DocumentId, QueryBuilder};
use meilidb_schema::Schema;
use rmp_serde::decode::Error as RmpError;
use serde::de;
use crate::ranked_map::RankedMap;
use crate::serde::Deserializer;
use super::{Error, CustomSettings};
use super::{
RawIndex,
DocumentsAddition, DocumentsDeletion,
SynonymsAddition, SynonymsDeletion,
};
#[derive(Copy, Clone)]
pub struct IndexStats {
pub number_of_words: usize,
pub number_of_documents: usize,
pub number_attrs_in_ranked_map: usize,
}
#[derive(Clone)]
pub struct Index(pub ArcSwap<InnerIndex>);
pub struct InnerIndex {
pub words: Arc<fst::Set>,
pub synonyms: Arc<fst::Set>,
pub schema: Schema,
pub ranked_map: RankedMap,
pub raw: RawIndex, // TODO this will be a snapshot in the future
}
impl Index {
pub fn from_raw(raw: RawIndex) -> Result<Index, Error> {
let words = match raw.main.words_set()? {
Some(words) => Arc::new(words),
None => Arc::new(fst::Set::default()),
};
let synonyms = match raw.main.synonyms_set()? {
Some(synonyms) => Arc::new(synonyms),
None => Arc::new(fst::Set::default()),
};
let schema = match raw.main.schema()? {
Some(schema) => schema,
None => return Err(Error::SchemaMissing),
};
let ranked_map = match raw.main.ranked_map()? {
Some(map) => map,
None => RankedMap::default(),
};
let inner = InnerIndex { words, synonyms, schema, ranked_map, raw };
let index = Index(ArcSwap::new(Arc::new(inner)));
Ok(index)
}
pub fn stats(&self) -> Result<IndexStats, rocksdb::Error> {
let lease = self.0.lease();
Ok(IndexStats {
number_of_words: lease.words.len(),
number_of_documents: lease.raw.documents.len()?,
number_attrs_in_ranked_map: lease.ranked_map.len(),
})
}
pub fn query_builder(&self) -> QueryBuilder<IndexLease> {
let lease = IndexLease(self.0.lease());
QueryBuilder::new(lease)
}
pub fn query_builder_with_criteria<'c>(
&self,
criteria: Criteria<'c>,
) -> QueryBuilder<'c, IndexLease>
{
let lease = IndexLease(self.0.lease());
QueryBuilder::with_criteria(lease, criteria)
}
pub fn lease_inner(&self) -> Lease<Arc<InnerIndex>> {
self.0.lease()
}
pub fn schema(&self) -> Schema {
self.0.lease().schema.clone()
}
pub fn custom_settings(&self) -> CustomSettings {
self.0.lease().raw.custom.clone()
}
pub fn documents_addition(&self) -> DocumentsAddition {
let ranked_map = self.0.lease().ranked_map.clone();
DocumentsAddition::new(self, ranked_map)
}
pub fn documents_deletion(&self) -> DocumentsDeletion {
let ranked_map = self.0.lease().ranked_map.clone();
DocumentsDeletion::new(self, ranked_map)
}
pub fn synonyms_addition(&self) -> SynonymsAddition {
SynonymsAddition::new(self)
}
pub fn synonyms_deletion(&self) -> SynonymsDeletion {
SynonymsDeletion::new(self)
}
pub fn document<T>(
&self,
fields: Option<&HashSet<&str>>,
id: DocumentId,
) -> Result<Option<T>, RmpError>
where T: de::DeserializeOwned,
{
let schema = &self.lease_inner().schema;
let fields = fields
.map(|fields| {
fields
.iter()
.filter_map(|name| schema.attribute(name))
.collect()
});
let mut deserializer = Deserializer {
document_id: id,
index: &self,
fields: fields.as_ref(),
};
// TODO: currently we return an error if all document fields are missing,
// returning None would have been better
T::deserialize(&mut deserializer).map(Some)
}
}
pub struct IndexLease(Lease<Arc<InnerIndex>>);
impl Store for IndexLease {
type Error = Error;
fn words(&self) -> Result<&fst::Set, Self::Error> {
Ok(&self.0.words)
}
fn word_indexes(&self, word: &[u8]) -> Result<Option<SetBuf<DocIndex>>, Self::Error> {
Ok(self.0.raw.words.doc_indexes(word)?)
}
fn synonyms(&self) -> Result<&fst::Set, Self::Error> {
Ok(&self.0.synonyms)
}
fn alternatives_to(&self, word: &[u8]) -> Result<Option<fst::Set>, Self::Error> {
Ok(self.0.raw.synonyms.alternatives_to(word)?)
}
}

13
meilidb-data/src/database/index/custom_settings_index.rs Normal file
View File

@ -0,0 +1,13 @@
use std::sync::Arc;
use std::ops::Deref;
#[derive(Clone)]
pub struct CustomSettingsIndex(pub(crate) Arc<sled::Tree>);
impl Deref for CustomSettingsIndex {
type Target = sled::Tree;
fn deref(&self) -> &Self::Target {
&self.0
}
}

13
meilidb-data/src/database/docs_words_index.rs → meilidb-data/src/database/index/docs_words_index.rs
View File

@ -1,17 +1,14 @@
use std::sync::Arc; use std::sync::Arc;
use meilidb_core::DocumentId; use meilidb_core::DocumentId;
use crate::database::Error;
use crate::database::raw_index::InnerRawIndex;
use super::Error;
#[derive(Clone)] #[derive(Clone)]
pub struct DocsWordsIndex(pub(crate) InnerRawIndex); pub struct DocsWordsIndex(pub Arc<sled::Tree>);
impl DocsWordsIndex { impl DocsWordsIndex {
pub fn doc_words(&self, id: DocumentId) -> Result<Option<fst::Set>, Error> { pub fn doc_words(&self, id: DocumentId) -> Result<Option<fst::Set>, Error> {
let key = id.0.to_be_bytes(); let key = id.0.to_be_bytes();
match self.0.get_pinned(key)? { match self.0.get(key)? {
Some(bytes) => { Some(bytes) => {
let len = bytes.len(); let len = bytes.len();
let value = Arc::from(bytes.as_ref()); let value = Arc::from(bytes.as_ref());
@ -24,13 +21,13 @@ impl DocsWordsIndex {
pub fn set_doc_words(&self, id: DocumentId, words: &fst::Set) -> Result<(), Error> { pub fn set_doc_words(&self, id: DocumentId, words: &fst::Set) -> Result<(), Error> {
let key = id.0.to_be_bytes(); let key = id.0.to_be_bytes();
self.0.set(key, words.as_fst().as_bytes())?; self.0.insert(key, words.as_fst().as_bytes())?;
Ok(()) Ok(())
} }
pub fn del_doc_words(&self, id: DocumentId) -> Result<(), Error> { pub fn del_doc_words(&self, id: DocumentId) -> Result<(), Error> {
let key = id.0.to_be_bytes(); let key = id.0.to_be_bytes();
self.0.delete(key)?; self.0.remove(key)?;
Ok(()) Ok(())
} }
} }

91
meilidb-data/src/database/index/documents_index.rs Normal file
View File

@ -0,0 +1,91 @@
use std::sync::Arc;
use std::convert::TryInto;
use std::ops::Bound;
use meilidb_core::DocumentId;
use meilidb_schema::SchemaAttr;
use crate::document_attr_key::DocumentAttrKey;
fn document_fields_range(id: DocumentId) -> (Bound<[u8; 10]>, Bound<[u8; 10]>) {
let start = DocumentAttrKey::new(id, SchemaAttr::min()).to_be_bytes();
let end = DocumentAttrKey::new(id, SchemaAttr::max()).to_be_bytes();
(Bound::Included(start), Bound::Included(end))
}
#[derive(Clone)]
pub struct DocumentsIndex(pub(crate) Arc<sled::Tree>);
impl DocumentsIndex {
pub fn document_field(&self, id: DocumentId, attr: SchemaAttr) -> sled::Result<Option<sled::IVec>> {
let key = DocumentAttrKey::new(id, attr).to_be_bytes();
self.0.get(key)
}
pub fn set_document_field(&self, id: DocumentId, attr: SchemaAttr, value: Vec<u8>) -> sled::Result<()> {
let key = DocumentAttrKey::new(id, attr).to_be_bytes();
self.0.insert(key, value)?;
Ok(())
}
pub fn del_document_field(&self, id: DocumentId, attr: SchemaAttr) -> sled::Result<()> {
let key = DocumentAttrKey::new(id, attr).to_be_bytes();
self.0.remove(key)?;
Ok(())
}
pub fn del_all_document_fields(&self, id: DocumentId) -> sled::Result<()> {
let range = document_fields_range(id);
for result in self.0.range(range) {
let (key, _) = result?;
self.0.remove(key)?;
}
Ok(())
}
pub fn document_fields(&self, id: DocumentId) -> DocumentFieldsIter {
let range = document_fields_range(id);
let iter = self.0.range(range);
DocumentFieldsIter(iter)
}
pub fn len(&self) -> sled::Result<usize> {
let mut last_document_id = None;
let mut count = 0;
for result in self.0.iter() {
let (key, _) = result?;
let array = key.as_ref().try_into().unwrap();
let document_id = DocumentAttrKey::from_be_bytes(array).document_id;
if Some(document_id) != last_document_id {
last_document_id = Some(document_id);
count += 1;
}
}
Ok(count)
}
}
pub struct DocumentFieldsIter<'a>(sled::Iter<'a>);
impl Iterator for DocumentFieldsIter<'_> {
type Item = sled::Result<(SchemaAttr, sled::IVec)>;
fn next(&mut self) -> Option<Self::Item> {
match self.0.next() {
Some(Ok((key, value))) => {
let array = key.as_ref().try_into().unwrap();
let key = DocumentAttrKey::from_be_bytes(array);
Some(Ok((key.attribute, value)))
},
Some(Err(e)) => return Some(Err(e)),
None => None,
}
}
}

22
meilidb-data/src/database/main_index.rs → meilidb-data/src/database/index/main_index.rs
View File

@ -2,10 +2,8 @@ use std::sync::Arc;
use meilidb_schema::Schema; use meilidb_schema::Schema;
use crate::database::raw_index::InnerRawIndex;
use crate::ranked_map::RankedMap; use crate::ranked_map::RankedMap;
use crate::database::Error;
use super::Error;
const SCHEMA_KEY: &str = "schema"; const SCHEMA_KEY: &str = "schema";
const WORDS_KEY: &str = "words"; const WORDS_KEY: &str = "words";
@ -13,11 +11,11 @@ const SYNONYMS_KEY: &str = "synonyms";
const RANKED_MAP_KEY: &str = "ranked-map"; const RANKED_MAP_KEY: &str = "ranked-map";
#[derive(Clone)] #[derive(Clone)]
pub struct MainIndex(pub(crate) InnerRawIndex); pub struct MainIndex(pub(crate) Arc<sled::Tree>);
impl MainIndex { impl MainIndex {
pub fn schema(&self) -> Result<Option<Schema>, Error> { pub fn schema(&self) -> Result<Option<Schema>, Error> {
match self.0.get_pinned(SCHEMA_KEY)? { match self.0.get(SCHEMA_KEY)? {
Some(bytes) => { Some(bytes) => {
let schema = Schema::read_from_bin(bytes.as_ref())?; let schema = Schema::read_from_bin(bytes.as_ref())?;
Ok(Some(schema)) Ok(Some(schema))
@ -29,12 +27,12 @@ impl MainIndex {
pub fn set_schema(&self, schema: &Schema) -> Result<(), Error> { pub fn set_schema(&self, schema: &Schema) -> Result<(), Error> {
let mut bytes = Vec::new(); let mut bytes = Vec::new();
schema.write_to_bin(&mut bytes)?; schema.write_to_bin(&mut bytes)?;
self.0.set(SCHEMA_KEY, bytes)?; self.0.insert(SCHEMA_KEY, bytes)?;
Ok(()) Ok(())
} }
pub fn words_set(&self) -> Result<Option<fst::Set>, Error> { pub fn words_set(&self) -> Result<Option<fst::Set>, Error> {
match self.0.get_pinned(WORDS_KEY)? { match self.0.get(WORDS_KEY)? {
Some(bytes) => { Some(bytes) => {
let len = bytes.len(); let len = bytes.len();
let value = Arc::from(bytes.as_ref()); let value = Arc::from(bytes.as_ref());
@ -46,11 +44,11 @@ impl MainIndex {
} }
pub fn set_words_set(&self, value: &fst::Set) -> Result<(), Error> { pub fn set_words_set(&self, value: &fst::Set) -> Result<(), Error> {
self.0.set(WORDS_KEY, value.as_fst().as_bytes()).map_err(Into::into) self.0.insert(WORDS_KEY, value.as_fst().as_bytes()).map(drop).map_err(Into::into)
} }
pub fn synonyms_set(&self) -> Result<Option<fst::Set>, Error> { pub fn synonyms_set(&self) -> Result<Option<fst::Set>, Error> {
match self.0.get_pinned(SYNONYMS_KEY)? { match self.0.get(SYNONYMS_KEY)? {
Some(bytes) => { Some(bytes) => {
let len = bytes.len(); let len = bytes.len();
let value = Arc::from(bytes.as_ref()); let value = Arc::from(bytes.as_ref());
@ -62,11 +60,11 @@ impl MainIndex {
} }
pub fn set_synonyms_set(&self, value: &fst::Set) -> Result<(), Error> { pub fn set_synonyms_set(&self, value: &fst::Set) -> Result<(), Error> {
self.0.set(SYNONYMS_KEY, value.as_fst().as_bytes()).map_err(Into::into) self.0.insert(SYNONYMS_KEY, value.as_fst().as_bytes()).map(drop).map_err(Into::into)
} }
pub fn ranked_map(&self) -> Result<Option<RankedMap>, Error> { pub fn ranked_map(&self) -> Result<Option<RankedMap>, Error> {
match self.0.get_pinned(RANKED_MAP_KEY)? { match self.0.get(RANKED_MAP_KEY)? {
Some(bytes) => { Some(bytes) => {
let ranked_map = RankedMap::read_from_bin(bytes.as_ref())?; let ranked_map = RankedMap::read_from_bin(bytes.as_ref())?;
Ok(Some(ranked_map)) Ok(Some(ranked_map))
@ -78,7 +76,7 @@ impl MainIndex {
pub fn set_ranked_map(&self, value: &RankedMap) -> Result<(), Error> { pub fn set_ranked_map(&self, value: &RankedMap) -> Result<(), Error> {
let mut bytes = Vec::new(); let mut bytes = Vec::new();
value.write_to_bin(&mut bytes)?; value.write_to_bin(&mut bytes)?;
self.0.set(RANKED_MAP_KEY, bytes)?; self.0.insert(RANKED_MAP_KEY, bytes)?;
Ok(()) Ok(())
} }
} }

469
meilidb-data/src/database/index/mod.rs Normal file
View File

@ -0,0 +1,469 @@
use std::collections::{HashSet, BTreeMap};
use std::convert::TryInto;
use std::sync::Arc;
use std::thread;
use std::time::{Duration, Instant};
use arc_swap::{ArcSwap, ArcSwapOption, Guard};
use meilidb_core::criterion::Criteria;
use meilidb_core::{DocIndex, Store, DocumentId, QueryBuilder};
use meilidb_schema::Schema;
use sdset::SetBuf;
use serde::{de, Serialize, Deserialize};
use sled::Transactional;
use crate::ranked_map::RankedMap;
use crate::serde::{Deserializer, DeserializerError};
pub use self::custom_settings_index::CustomSettingsIndex;
use self::docs_words_index::DocsWordsIndex;
use self::documents_index::DocumentsIndex;
use self::main_index::MainIndex;
use self::synonyms_index::SynonymsIndex;
use self::words_index::WordsIndex;
use crate::database::{
Error,
DocumentsAddition, DocumentsDeletion,
SynonymsAddition, SynonymsDeletion,
apply_documents_addition, apply_documents_deletion,
apply_synonyms_addition, apply_synonyms_deletion,
};
mod custom_settings_index;
mod docs_words_index;
mod documents_index;
mod main_index;
mod synonyms_index;
mod words_index;
fn event_is_set(event: &sled::Event) -> bool {
match event {
sled::Event::Set(_, _) => true,
_ => false,
}
}
#[derive(Deserialize)]
enum UpdateOwned {
DocumentsAddition(Vec<rmpv::Value>),
DocumentsDeletion(Vec<DocumentId>),
SynonymsAddition(BTreeMap<String, Vec<String>>),
SynonymsDeletion(BTreeMap<String, Option<Vec<String>>>),
}
#[derive(Serialize)]
enum Update {
DocumentsAddition(Vec<rmpv::Value>),
DocumentsDeletion(Vec<DocumentId>),
SynonymsAddition(BTreeMap<String, Vec<String>>),
SynonymsDeletion(BTreeMap<String, Option<Vec<String>>>),
}
#[derive(Clone, Serialize, Deserialize)]
pub enum UpdateType {
DocumentsAddition { number: usize },
DocumentsDeletion { number: usize },
SynonymsAddition { number: usize },
SynonymsDeletion { number: usize },
}
#[derive(Clone, Serialize, Deserialize)]
pub struct DetailedDuration {
main: Duration,
}
#[derive(Clone, Serialize, Deserialize)]
pub struct UpdateStatus {
pub update_id: u64,
pub update_type: UpdateType,
pub result: Result<(), String>,
pub detailed_duration: DetailedDuration,
}
fn spawn_update_system(index: Index) -> thread::JoinHandle<()> {
thread::spawn(move || {
loop {
let subscription = index.updates_index.watch_prefix(vec![]);
while let Some(result) = index.updates_index.iter().next() {
let (key, _) = result.unwrap();
let update_id = key.as_ref().try_into().map(u64::from_be_bytes).unwrap();
let updates = &index.updates_index;
let results = &index.updates_results_index;
(updates, results).transaction(|(updates, results)| {
let update = updates.remove(&key)?.unwrap();
let (update_type, result, duration) = match rmp_serde::from_read_ref(&update).unwrap() {
UpdateOwned::DocumentsAddition(documents) => {
let update_type = UpdateType::DocumentsAddition { number: documents.len() };
let ranked_map = index.cache.load().ranked_map.clone();
let start = Instant::now();
let result = apply_documents_addition(&index, ranked_map, documents);
(update_type, result, start.elapsed())
},
UpdateOwned::DocumentsDeletion(documents) => {
let update_type = UpdateType::DocumentsDeletion { number: documents.len() };
let ranked_map = index.cache.load().ranked_map.clone();
let start = Instant::now();
let result = apply_documents_deletion(&index, ranked_map, documents);
(update_type, result, start.elapsed())
},
UpdateOwned::SynonymsAddition(synonyms) => {
let update_type = UpdateType::SynonymsAddition { number: synonyms.len() };
let start = Instant::now();
let result = apply_synonyms_addition(&index, synonyms);
(update_type, result, start.elapsed())
},
UpdateOwned::SynonymsDeletion(synonyms) => {
let update_type = UpdateType::SynonymsDeletion { number: synonyms.len() };
let start = Instant::now();
let result = apply_synonyms_deletion(&index, synonyms);
(update_type, result, start.elapsed())
},
};
let detailed_duration = DetailedDuration { main: duration };
let status = UpdateStatus {
update_id,
update_type,
result: result.map_err(|e| e.to_string()),
detailed_duration,
};
if let Some(callback) = &*index.update_callback.load() {
(callback)(status.clone());
}
let value = bincode::serialize(&status).unwrap();
results.insert(&key, value)
})
.unwrap();
}
// this subscription is just used to block
// the loop until a new update is inserted
subscription.filter(event_is_set).next();
}
})
}
#[derive(Copy, Clone)]
pub struct IndexStats {
pub number_of_words: usize,
pub number_of_documents: usize,
pub number_attrs_in_ranked_map: usize,
}
#[derive(Clone)]
pub struct Index {
pub(crate) cache: Arc<ArcSwap<Cache>>,
// TODO this will be a snapshot in the future
main_index: MainIndex,
synonyms_index: SynonymsIndex,
words_index: WordsIndex,
docs_words_index: DocsWordsIndex,
documents_index: DocumentsIndex,
custom_settings_index: CustomSettingsIndex,
// used by the update system
db: sled::Db,
updates_index: Arc<sled::Tree>,
updates_results_index: Arc<sled::Tree>,
update_callback: Arc<ArcSwapOption<Box<dyn Fn(UpdateStatus) + Send + Sync + 'static>>>,
}
pub(crate) struct Cache {
pub words: Arc<fst::Set>,
pub synonyms: Arc<fst::Set>,
pub schema: Schema,
pub ranked_map: RankedMap,
}
impl Index {
pub fn new(db: sled::Db, name: &str) -> Result<Index, Error> {
Index::new_raw(db, name, None)
}
pub fn with_schema(db: sled::Db, name: &str, schema: Schema) -> Result<Index, Error> {
Index::new_raw(db, name, Some(schema))
}
fn new_raw(db: sled::Db, name: &str, schema: Option<Schema>) -> Result<Index, Error> {
let main_index = db.open_tree(name).map(MainIndex)?;
let synonyms_index = db.open_tree(format!("{}-synonyms", name)).map(SynonymsIndex)?;
let words_index = db.open_tree(format!("{}-words", name)).map(WordsIndex)?;
let docs_words_index = db.open_tree(format!("{}-docs-words", name)).map(DocsWordsIndex)?;
let documents_index = db.open_tree(format!("{}-documents", name)).map(DocumentsIndex)?;
let custom_settings_index = db.open_tree(format!("{}-custom", name)).map(CustomSettingsIndex)?;
let updates_index = db.open_tree(format!("{}-updates", name))?;
let updates_results_index = db.open_tree(format!("{}-updates-results", name))?;
let words = match main_index.words_set()? {
Some(words) => Arc::new(words),
None => Arc::new(fst::Set::default()),
};
let synonyms = match main_index.synonyms_set()? {
Some(synonyms) => Arc::new(synonyms),
None => Arc::new(fst::Set::default()),
};
let schema = match (schema, main_index.schema()?) {
(Some(ref expected), Some(ref current)) if current != expected => {
return Err(Error::SchemaDiffer)
},
(Some(expected), Some(_)) => expected,
(Some(expected), None) => {
main_index.set_schema(&expected)?;
expected
},
(None, Some(current)) => current,
(None, None) => return Err(Error::SchemaMissing),
};
let ranked_map = match main_index.ranked_map()? {
Some(map) => map,
None => RankedMap::default(),
};
let cache = Cache { words, synonyms, schema, ranked_map };
let cache = Arc::new(ArcSwap::from_pointee(cache));
let index = Index {
cache,
main_index,
synonyms_index,
words_index,
docs_words_index,
documents_index,
custom_settings_index,
db,
updates_index,
updates_results_index,
update_callback: Arc::new(ArcSwapOption::empty()),
};
let _handle = spawn_update_system(index.clone());
Ok(index)
}
pub fn set_update_callback<F>(&self, callback: F)
where F: Fn(UpdateStatus) + Send + Sync + 'static
{
self.update_callback.store(Some(Arc::new(Box::new(callback))));
}
pub fn unset_update_callback(&self) {
self.update_callback.store(None);
}
pub fn stats(&self) -> sled::Result<IndexStats> {
let cache = self.cache.load();
Ok(IndexStats {
number_of_words: cache.words.len(),
number_of_documents: self.documents_index.len()?,
number_attrs_in_ranked_map: cache.ranked_map.len(),
})
}
pub fn query_builder(&self) -> QueryBuilder<RefIndex> {
let ref_index = self.as_ref();
QueryBuilder::new(ref_index)
}
pub fn query_builder_with_criteria<'c>(
&self,
criteria: Criteria<'c>,
) -> QueryBuilder<'c, RefIndex>
{
let ref_index = self.as_ref();
QueryBuilder::with_criteria(ref_index, criteria)
}
pub fn as_ref(&self) -> RefIndex {
RefIndex {
cache: self.cache.load(),
main_index: &self.main_index,
synonyms_index: &self.synonyms_index,
words_index: &self.words_index,
docs_words_index: &self.docs_words_index,
documents_index: &self.documents_index,
custom_settings_index: &self.custom_settings_index,
}
}
pub fn schema(&self) -> Schema {
self.cache.load().schema.clone()
}
pub fn custom_settings(&self) -> CustomSettingsIndex {
self.custom_settings_index.clone()
}
pub fn documents_addition<D>(&self) -> DocumentsAddition<D> {
DocumentsAddition::new(self)
}
pub fn documents_deletion(&self) -> DocumentsDeletion {
DocumentsDeletion::new(self)
}
pub fn synonyms_addition(&self) -> SynonymsAddition {
SynonymsAddition::new(self)
}
pub fn synonyms_deletion(&self) -> SynonymsDeletion {
SynonymsDeletion::new(self)
}
pub fn update_status(
&self,
update_id: u64,
) -> Result<Option<UpdateStatus>, Error>
{
let update_id = update_id.to_be_bytes();
match self.updates_results_index.get(update_id)? {
Some(value) => {
let value = bincode::deserialize(&value)?;
Ok(Some(value))
},
None => Ok(None),
}
}
pub fn update_status_blocking(
&self,
update_id: u64,
) -> Result<UpdateStatus, Error>
{
let update_id_bytes = update_id.to_be_bytes().to_vec();
let mut subscription = self.updates_results_index.watch_prefix(update_id_bytes);
// if we find the update result return it now
if let Some(result) = self.update_status(update_id)? {
return Ok(result)
}
// this subscription is used to block the thread
// until the update_id is inserted in the tree
subscription.next();
// the thread has been unblocked, it means that the update result
// has been inserted in the tree, retrieve it
Ok(self.update_status(update_id)?.unwrap())
}
pub fn document<T>(
&self,
fields: Option<&HashSet<&str>>,
id: DocumentId,
) -> Result<Option<T>, DeserializerError>
where T: de::DeserializeOwned,
{
let schema = self.schema();
let fields = match fields {
Some(fields) => fields.into_iter().map(|name| schema.attribute(name)).collect(),
None => None,
};
let mut deserializer = Deserializer {
document_id: id,
index: &self,
fields: fields.as_ref(),
};
// TODO: currently we return an error if all document fields are missing,
// returning None would have been better
T::deserialize(&mut deserializer).map(Some)
}
}
impl Index {
pub(crate) fn push_documents_addition<D>(&self, addition: Vec<D>) -> Result<u64, Error>
where D: serde::Serialize
{
let mut values = Vec::with_capacity(addition.len());
for add in addition {
let vec = rmp_serde::to_vec_named(&add)?;
let add = rmp_serde::from_read(&vec[..])?;
values.push(add);
}
let addition = Update::DocumentsAddition(values);
let update = rmp_serde::to_vec_named(&addition)?;
self.raw_push_update(update)
}
pub(crate) fn push_documents_deletion(
&self,
deletion: Vec<DocumentId>,
) -> Result<u64, Error>
{
let deletion = Update::DocumentsDeletion(deletion);
let update = rmp_serde::to_vec_named(&deletion)?;
self.raw_push_update(update)
}
pub(crate) fn push_synonyms_addition(
&self,
addition: BTreeMap<String, Vec<String>>,
) -> Result<u64, Error>
{
let addition = Update::SynonymsAddition(addition);
let update = rmp_serde::to_vec_named(&addition)?;
self.raw_push_update(update)
}
pub(crate) fn push_synonyms_deletion(
&self,
deletion: BTreeMap<String, Option<Vec<String>>>,
) -> Result<u64, Error>
{
let deletion = Update::SynonymsDeletion(deletion);
let update = rmp_serde::to_vec_named(&deletion)?;
self.raw_push_update(update)
}
fn raw_push_update(&self, raw_update: Vec<u8>) -> Result<u64, Error> {
let update_id = self.db.generate_id()?;
let update_id_array = update_id.to_be_bytes();
self.updates_index.insert(update_id_array, raw_update)?;
Ok(update_id)
}
}
pub struct RefIndex<'a> {
pub(crate) cache: Guard<'static, Arc<Cache>>,
pub main_index: &'a MainIndex,
pub synonyms_index: &'a SynonymsIndex,
pub words_index: &'a WordsIndex,
pub docs_words_index: &'a DocsWordsIndex,
pub documents_index: &'a DocumentsIndex,
pub custom_settings_index: &'a CustomSettingsIndex,
}
impl Store for RefIndex<'_> {
type Error = Error;
fn words(&self) -> Result<&fst::Set, Self::Error> {
Ok(&self.cache.words)
}
fn word_indexes(&self, word: &[u8]) -> Result<Option<SetBuf<DocIndex>>, Self::Error> {
Ok(self.words_index.doc_indexes(word)?)
}
fn synonyms(&self) -> Result<&fst::Set, Self::Error> {
Ok(&self.cache.synonyms)
}
fn alternatives_to(&self, word: &[u8]) -> Result<Option<fst::Set>, Self::Error> {
Ok(self.synonyms_index.alternatives_to(word)?)
}
}

21
meilidb-data/src/database/index/synonyms_index.rs Normal file
View File

@ -0,0 +1,21 @@
use std::sync::Arc;
#[derive(Clone)]
pub struct SynonymsIndex(pub(crate) Arc<sled::Tree>);
impl SynonymsIndex {
pub fn alternatives_to(&self, word: &[u8]) -> sled::Result<Option<fst::Set>> {
match self.0.get(word)? {
Some(vector) => Ok(Some(fst::Set::from_bytes(vector.to_vec()).unwrap())),
None => Ok(None),
}
}
pub fn set_alternatives_to(&self, word: &[u8], value: Vec<u8>) -> sled::Result<()> {
self.0.insert(word, value).map(drop)
}
pub fn del_alternatives_of(&self, word: &[u8]) -> sled::Result<()> {
self.0.remove(word).map(drop)
}
}

18
meilidb-data/src/database/words_index.rs → meilidb-data/src/database/index/words_index.rs
View File

@ -1,14 +1,14 @@
use std::sync::Arc;
use meilidb_core::DocIndex; use meilidb_core::DocIndex;
use sdset::{Set, SetBuf}; use sdset::{Set, SetBuf};
use zerocopy::{LayoutVerified, AsBytes}; use zerocopy::{LayoutVerified, AsBytes};
use crate::database::raw_index::InnerRawIndex;
#[derive(Clone)] #[derive(Clone)]
pub struct WordsIndex(pub(crate) InnerRawIndex); pub struct WordsIndex(pub(crate) Arc<sled::Tree>);
impl WordsIndex { impl WordsIndex {
pub fn doc_indexes(&self, word: &[u8]) -> Result<Option<SetBuf<DocIndex>>, rocksdb::Error> { pub fn doc_indexes(&self, word: &[u8]) -> sled::Result<Option<SetBuf<DocIndex>>> {
// we must force an allocation to make the memory aligned // we must force an allocation to make the memory aligned
match self.0.get(word)? { match self.0.get(word)? {
Some(bytes) => { Some(bytes) => {
@ -36,13 +36,11 @@ impl WordsIndex {
} }
} }
pub fn set_doc_indexes(&self, word: &[u8], set: &Set<DocIndex>) -> Result<(), rocksdb::Error> { pub fn set_doc_indexes(&self, word: &[u8], set: &Set<DocIndex>) -> sled::Result<()> {
self.0.set(word, set.as_bytes())?; self.0.insert(word, set.as_bytes()).map(drop)
Ok(())
} }
pub fn del_doc_indexes(&self, word: &[u8]) -> Result<(), rocksdb::Error> { pub fn del_doc_indexes(&self, word: &[u8]) -> sled::Result<()> {
self.0.delete(word)?; self.0.remove(word).map(drop)
Ok(())
} }
} }

177
meilidb-data/src/database/mod.rs
View File

@ -1,88 +1,64 @@
use std::collections::hash_map::Entry; use std::collections::hash_map::Entry;
use std::collections::{HashSet, HashMap}; use std::collections::{HashSet, HashMap};
use std::path::Path; use std::path::Path;
use std::sync::{Arc, RwLock}; use std::sync::RwLock;
use meilidb_schema::Schema; use meilidb_schema::Schema;
mod custom_settings;
mod docs_words_index;
mod documents_addition;
mod documents_deletion;
mod documents_index;
mod error; mod error;
mod index; mod index;
mod main_index; mod update;
mod raw_index;
mod synonyms_addition;
mod synonyms_deletion;
mod synonyms_index;
mod words_index;
pub use self::error::Error; pub use self::error::Error;
pub use self::index::Index; pub use self::index::{Index, CustomSettingsIndex};
pub use self::custom_settings::CustomSettings;
use self::docs_words_index::DocsWordsIndex; pub use self::update::DocumentsAddition;
use self::documents_addition::DocumentsAddition; pub use self::update::DocumentsDeletion;
use self::documents_deletion::DocumentsDeletion; pub use self::update::SynonymsAddition;
use self::synonyms_addition::SynonymsAddition; pub use self::update::SynonymsDeletion;
use self::synonyms_deletion::SynonymsDeletion;
use self::documents_index::DocumentsIndex; use self::update::apply_documents_addition;
use self::index::InnerIndex; use self::update::apply_documents_deletion;
use self::main_index::MainIndex; use self::update::apply_synonyms_addition;
use self::raw_index::{RawIndex, InnerRawIndex}; use self::update::apply_synonyms_deletion;
use self::words_index::WordsIndex;
use self::synonyms_index::SynonymsIndex; fn load_indexes(tree: &sled::Tree) -> Result<HashSet<String>, Error> {
match tree.get("indexes")? {
Some(bytes) => Ok(bincode::deserialize(&bytes)?),
None => Ok(HashSet::new())
}
}
pub struct Database { pub struct Database {
cache: RwLock<HashMap<String, Arc<Index>>>, cache: RwLock<HashMap<String, Index>>,
inner: Arc<rocksdb::DB>, inner: sled::Db,
} }
impl Database { impl Database {
pub fn start_default<P: AsRef<Path>>(path: P) -> Result<Database, Error> { pub fn open<P: AsRef<Path>>(path: P) -> Result<Database, Error> {
let path = path.as_ref();
let cache = RwLock::new(HashMap::new()); let cache = RwLock::new(HashMap::new());
let inner = sled::Db::open(path)?;
let options = { let indexes = load_indexes(&inner)?;
let mut options = rocksdb::Options::default();
options.create_if_missing(true);
options
};
let cfs = rocksdb::DB::list_cf(&options, path).unwrap_or(Vec::new());
let inner = Arc::new(rocksdb::DB::open_cf(&options, path, &cfs)?);
let database = Database { cache, inner }; let database = Database { cache, inner };
let mut indexes: Vec<_> = cfs.iter()
.filter_map(|c| c.split('-').nth(0).filter(|&c| c != "default"))
.collect();
indexes.sort_unstable();
indexes.dedup();
for index in indexes { for index in indexes {
database.open_index(index)?; database.open_index(&index)?;
} }
Ok(database) Ok(database)
} }
pub fn indexes(&self) -> Result<Option<HashSet<String>>, Error> { pub fn indexes(&self) -> Result<HashSet<String>, Error> {
let bytes = match self.inner.get("indexes")? { load_indexes(&self.inner)
Some(bytes) => bytes,
None => return Ok(None),
};
let indexes = bincode::deserialize(&bytes)?;
Ok(Some(indexes))
} }
fn set_indexes(&self, value: &HashSet<String>) -> Result<(), Error> { fn set_indexes(&self, value: &HashSet<String>) -> Result<(), Error> {
let bytes = bincode::serialize(value)?; let bytes = bincode::serialize(value)?;
self.inner.put("indexes", bytes)?; self.inner.insert("indexes", bytes)?;
Ok(()) Ok(())
} }
pub fn open_index(&self, name: &str) -> Result<Option<Arc<Index>>, Error> { pub fn open_index(&self, name: &str) -> Result<Option<Index>, Error> {
{ {
let cache = self.cache.read().unwrap(); let cache = self.cache.read().unwrap();
if let Some(index) = cache.get(name).cloned() { if let Some(index) = cache.get(name).cloned() {
@ -96,56 +72,19 @@ impl Database {
occupied.get().clone() occupied.get().clone()
}, },
Entry::Vacant(vacant) => { Entry::Vacant(vacant) => {
if !self.indexes()?.map_or(false, |x| x.contains(name)) { if !self.indexes()?.contains(name) {
return Ok(None) return Ok(None)
} }
let main = { let index = Index::new(self.inner.clone(), name)?;
self.inner.cf_handle(name).expect("cf not found"); vacant.insert(index).clone()
MainIndex(InnerRawIndex::new(self.inner.clone(), Arc::from(name)))
};
let synonyms = {
let cf_name = format!("{}-synonyms", name);
self.inner.cf_handle(&cf_name).expect("cf not found");
SynonymsIndex(InnerRawIndex::new(self.inner.clone(), Arc::from(cf_name)))
};
let words = {
let cf_name = format!("{}-words", name);
self.inner.cf_handle(&cf_name).expect("cf not found");
WordsIndex(InnerRawIndex::new(self.inner.clone(), Arc::from(cf_name)))
};
let docs_words = {
let cf_name = format!("{}-docs-words", name);
self.inner.cf_handle(&cf_name).expect("cf not found");
DocsWordsIndex(InnerRawIndex::new(self.inner.clone(), Arc::from(cf_name)))
};
let documents = {
let cf_name = format!("{}-documents", name);
self.inner.cf_handle(&cf_name).expect("cf not found");
DocumentsIndex(InnerRawIndex::new(self.inner.clone(), Arc::from(cf_name)))
};
let custom = {
let cf_name = format!("{}-custom", name);
self.inner.cf_handle(&cf_name).expect("cf not found");
CustomSettings(InnerRawIndex::new(self.inner.clone(), Arc::from(cf_name)))
};
let raw_index = RawIndex { main, synonyms, words, docs_words, documents, custom };
let index = Index::from_raw(raw_index)?;
vacant.insert(Arc::new(index)).clone()
}, },
}; };
Ok(Some(index)) Ok(Some(index))
} }
pub fn create_index(&self, name: &str, schema: Schema) -> Result<Arc<Index>, Error> { pub fn create_index(&self, name: &str, schema: Schema) -> Result<Index, Error> {
let mut cache = self.cache.write().unwrap(); let mut cache = self.cache.write().unwrap();
let index = match cache.entry(name.to_string()) { let index = match cache.entry(name.to_string()) {
@ -153,57 +92,13 @@ impl Database {
occupied.get().clone() occupied.get().clone()
}, },
Entry::Vacant(vacant) => { Entry::Vacant(vacant) => {
let main = { let index = Index::with_schema(self.inner.clone(), name, schema)?;
self.inner.create_cf(name, &rocksdb::Options::default())?;
MainIndex(InnerRawIndex::new(self.inner.clone(), Arc::from(name)))
};
if let Some(prev_schema) = main.schema()? { let mut indexes = self.indexes()?;
if prev_schema != schema {
return Err(Error::SchemaDiffer)
}
}
main.set_schema(&schema)?;
let synonyms = {
let cf_name = format!("{}-synonyms", name);
self.inner.create_cf(&cf_name, &rocksdb::Options::default())?;
SynonymsIndex(InnerRawIndex::new(self.inner.clone(), Arc::from(cf_name)))
};
let words = {
let cf_name = format!("{}-words", name);
self.inner.create_cf(&cf_name, &rocksdb::Options::default())?;
WordsIndex(InnerRawIndex::new(self.inner.clone(), Arc::from(cf_name)))
};
let docs_words = {
let cf_name = format!("{}-docs-words", name);
self.inner.create_cf(&cf_name, &rocksdb::Options::default())?;
DocsWordsIndex(InnerRawIndex::new(self.inner.clone(), Arc::from(cf_name)))
};
let documents = {
let cf_name = format!("{}-documents", name);
self.inner.create_cf(&cf_name, &rocksdb::Options::default())?;
DocumentsIndex(InnerRawIndex::new(self.inner.clone(), Arc::from(cf_name)))
};
let custom = {
let cf_name = format!("{}-custom", name);
self.inner.create_cf(&cf_name, &rocksdb::Options::default())?;
CustomSettings(InnerRawIndex::new(self.inner.clone(), Arc::from(cf_name)))
};
let mut indexes = self.indexes()?.unwrap_or_else(HashSet::new);
indexes.insert(name.to_string()); indexes.insert(name.to_string());
self.set_indexes(&indexes)?; self.set_indexes(&indexes)?;
let raw_index = RawIndex { main, synonyms, words, docs_words, documents, custom }; vacant.insert(index).clone()
let index = Index::from_raw(raw_index)?;
vacant.insert(Arc::new(index)).clone()
}, },
}; };

88
meilidb-data/src/database/raw_index.rs
View File

@ -1,88 +0,0 @@
use std::sync::Arc;
use super::{MainIndex, SynonymsIndex, WordsIndex, DocsWordsIndex, DocumentsIndex, CustomSettings};
#[derive(Clone)]
pub struct RawIndex {
pub main: MainIndex,
pub synonyms: SynonymsIndex,
pub words: WordsIndex,
pub docs_words: DocsWordsIndex,
pub documents: DocumentsIndex,
pub custom: CustomSettings,
}
impl RawIndex {
pub(crate) fn compact(&self) {
self.main.0.compact_range(None::<&[u8]>, None::<&[u8]>);
self.synonyms.0.compact_range(None::<&[u8]>, None::<&[u8]>);
self.words.0.compact_range(None::<&[u8]>, None::<&[u8]>);
self.docs_words.0.compact_range(None::<&[u8]>, None::<&[u8]>);
self.documents.0.compact_range(None::<&[u8]>, None::<&[u8]>);
self.custom.0.compact_range(None::<&[u8]>, None::<&[u8]>);
}
}
#[derive(Clone)]
pub struct InnerRawIndex {
database: Arc<rocksdb::DB>,
name: Arc<str>,
}
impl InnerRawIndex {
pub fn new(database: Arc<rocksdb::DB>, name: Arc<str>) -> InnerRawIndex {
InnerRawIndex { database, name }
}
pub fn get<K>(&self, key: K) -> Result<Option<rocksdb::DBVector>, rocksdb::Error>
where K: AsRef<[u8]>,
{
let cf = self.database.cf_handle(&self.name).expect("cf not found");
self.database.get_cf(cf, key)
}
pub fn get_pinned<K>(&self, key: K) -> Result<Option<rocksdb::DBPinnableSlice>, rocksdb::Error>
where K: AsRef<[u8]>,
{
let cf = self.database.cf_handle(&self.name).expect("cf not found");
self.database.get_pinned_cf(cf, key)
}
pub fn iterator(&self, from: rocksdb::IteratorMode) -> Result<rocksdb::DBIterator, rocksdb::Error> {
let cf = self.database.cf_handle(&self.name).expect("cf not found");
self.database.iterator_cf(cf, from)
}
pub fn set<K, V>(&self, key: K, value: V) -> Result<(), rocksdb::Error>
where K: AsRef<[u8]>,
V: AsRef<[u8]>,
{
let cf = self.database.cf_handle(&self.name).expect("cf not found");
self.database.put_cf(cf, key, value)
}
pub fn delete<K>(&self, key: K) -> Result<(), rocksdb::Error>
where K: AsRef<[u8]>
{
let cf = self.database.cf_handle(&self.name).expect("cf not found");
self.database.delete_cf(cf, key)
}
pub fn delete_range<K>(&self, start: K, end: K) -> Result<(), rocksdb::Error>
where K: AsRef<[u8]>,
{
let mut batch = rocksdb::WriteBatch::default();
let cf = self.database.cf_handle(&self.name).expect("cf not found");
batch.delete_range_cf(cf, start, end)?;
self.database.write(batch)
}
pub fn compact_range<S, E>(&self, start: Option<S>, end: Option<E>)
where S: AsRef<[u8]>,
E: AsRef<[u8]>,
{
let cf = self.database.cf_handle(&self.name).expect("cf not found");
self.database.compact_range_cf(cf, start, end)
}
}

87
meilidb-data/src/database/synonyms_addition.rs
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@ -1,87 +0,0 @@
use std::collections::BTreeMap;
use std::sync::Arc;
use fst::{SetBuilder, set::OpBuilder};
use meilidb_core::normalize_str;
use sdset::SetBuf;
use crate::database::index::InnerIndex;
use super::{Error, Index};
pub struct SynonymsAddition<'a> {
inner: &'a Index,
synonyms: BTreeMap<String, Vec<String>>,
}
impl<'a> SynonymsAddition<'a> {
pub fn new(inner: &'a Index) -> SynonymsAddition<'a> {
SynonymsAddition { inner, synonyms: BTreeMap::new() }
}
pub fn add_synonym<S, T, I>(&mut self, synonym: S, alternatives: I)
where S: AsRef<str>,
T: AsRef<str>,
I: IntoIterator<Item=T>,
{
let synonym = normalize_str(synonym.as_ref());
let alternatives = alternatives.into_iter().map(|s| s.as_ref().to_lowercase());
self.synonyms.entry(synonym).or_insert_with(Vec::new).extend(alternatives);
}
pub fn finalize(self) -> Result<(), Error> {
let lease_inner = self.inner.lease_inner();
let synonyms = &lease_inner.raw.synonyms;
let main = &lease_inner.raw.main;
let mut synonyms_builder = SetBuilder::memory();
for (synonym, alternatives) in self.synonyms {
synonyms_builder.insert(&synonym).unwrap();
let alternatives = {
let alternatives = SetBuf::from_dirty(alternatives);
let mut alternatives_builder = SetBuilder::memory();
alternatives_builder.extend_iter(alternatives).unwrap();
alternatives_builder.into_inner().unwrap()
};
synonyms.set_alternatives_to(synonym.as_bytes(), alternatives)?;
}
let delta_synonyms = synonyms_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap();
let synonyms = match main.synonyms_set()? {
Some(synonyms) => {
let op = OpBuilder::new()
.add(synonyms.stream())
.add(delta_synonyms.stream())
.r#union();
let mut synonyms_builder = SetBuilder::memory();
synonyms_builder.extend_stream(op).unwrap();
synonyms_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap()
},
None => delta_synonyms,
};
main.set_synonyms_set(&synonyms)?;
// update the "consistent" view of the Index
let words = Arc::new(main.words_set()?.unwrap_or_default());
let ranked_map = lease_inner.ranked_map.clone();
let synonyms = Arc::new(synonyms);
let schema = lease_inner.schema.clone();
let raw = lease_inner.raw.clone();
lease_inner.raw.compact();
let inner = InnerIndex { words, synonyms, schema, ranked_map, raw };
self.inner.0.store(Arc::new(inner));
Ok(())
}
}

130
meilidb-data/src/database/synonyms_deletion.rs
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@ -1,130 +0,0 @@
use std::collections::BTreeMap;
use std::iter::FromIterator;
use std::sync::Arc;
use fst::{SetBuilder, set::OpBuilder};
use meilidb_core::normalize_str;
use sdset::SetBuf;
use crate::database::index::InnerIndex;
use super::{Error, Index};
pub struct SynonymsDeletion<'a> {
inner: &'a Index,
synonyms: BTreeMap<String, Option<Vec<String>>>,
}
impl<'a> SynonymsDeletion<'a> {
pub fn new(inner: &'a Index) -> SynonymsDeletion<'a> {
SynonymsDeletion { inner, synonyms: BTreeMap::new() }
}
pub fn delete_all_alternatives_of<S: AsRef<str>>(&mut self, synonym: S) {
let synonym = normalize_str(synonym.as_ref());
self.synonyms.insert(synonym, None);
}
pub fn delete_specific_alternatives_of<S, T, I>(&mut self, synonym: S, alternatives: I)
where S: AsRef<str>,
T: AsRef<str>,
I: Iterator<Item=T>,
{
let synonym = normalize_str(synonym.as_ref());
let value = self.synonyms.entry(synonym).or_insert(None);
let alternatives = alternatives.map(|s| s.as_ref().to_lowercase());
match value {
Some(v) => v.extend(alternatives),
None => *value = Some(Vec::from_iter(alternatives)),
}
}
pub fn finalize(self) -> Result<(), Error> {
let lease_inner = self.inner.lease_inner();
let synonyms = &lease_inner.raw.synonyms;
let main = &lease_inner.raw.main;
let mut delete_whole_synonym_builder = SetBuilder::memory();
for (synonym, alternatives) in self.synonyms {
match alternatives {
Some(alternatives) => {
let prev_alternatives = synonyms.alternatives_to(synonym.as_bytes())?;
let prev_alternatives = match prev_alternatives {
Some(alternatives) => alternatives,
None => continue,
};
let delta_alternatives = {
let alternatives = SetBuf::from_dirty(alternatives);
let mut builder = SetBuilder::memory();
builder.extend_iter(alternatives).unwrap();
builder.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap()
};
let op = OpBuilder::new()
.add(prev_alternatives.stream())
.add(delta_alternatives.stream())
.difference();
let (alternatives, empty_alternatives) = {
let mut builder = SetBuilder::memory();
let len = builder.get_ref().len();
builder.extend_stream(op).unwrap();
let is_empty = len == builder.get_ref().len();
let alternatives = builder.into_inner().unwrap();
(alternatives, is_empty)
};
if empty_alternatives {
delete_whole_synonym_builder.insert(synonym.as_bytes())?;
} else {
synonyms.set_alternatives_to(synonym.as_bytes(), alternatives)?;
}
},
None => {
delete_whole_synonym_builder.insert(&synonym).unwrap();
synonyms.del_alternatives_of(synonym.as_bytes())?;
}
}
}
let delta_synonyms = delete_whole_synonym_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap();
let synonyms = match main.synonyms_set()? {
Some(synonyms) => {
let op = OpBuilder::new()
.add(synonyms.stream())
.add(delta_synonyms.stream())
.difference();
let mut synonyms_builder = SetBuilder::memory();
synonyms_builder.extend_stream(op).unwrap();
synonyms_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap()
},
None => fst::Set::default(),
};
main.set_synonyms_set(&synonyms)?;
// update the "consistent" view of the Index
let words = Arc::new(main.words_set()?.unwrap_or_default());
let ranked_map = lease_inner.ranked_map.clone();
let synonyms = Arc::new(synonyms);
let schema = lease_inner.schema.clone();
let raw = lease_inner.raw.clone();
lease_inner.raw.compact();
let inner = InnerIndex { words, synonyms, schema, ranked_map, raw };
self.inner.0.store(Arc::new(inner));
Ok(())
}
}

23
meilidb-data/src/database/synonyms_index.rs
View File

@ -1,23 +0,0 @@
use crate::database::raw_index::InnerRawIndex;
#[derive(Clone)]
pub struct SynonymsIndex(pub(crate) InnerRawIndex);
impl SynonymsIndex {
pub fn alternatives_to(&self, word: &[u8]) -> Result<Option<fst::Set>, rocksdb::Error> {
match self.0.get(word)? {
Some(vector) => Ok(Some(fst::Set::from_bytes(vector.to_vec()).unwrap())),
None => Ok(None),
}
}
pub fn set_alternatives_to(&self, word: &[u8], value: Vec<u8>) -> Result<(), rocksdb::Error> {
self.0.set(word, value)?;
Ok(())
}
pub fn del_alternatives_of(&self, word: &[u8]) -> Result<(), rocksdb::Error> {
self.0.delete(word)?;
Ok(())
}
}

137
meilidb-data/src/database/update/documents_addition.rs Normal file
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@ -0,0 +1,137 @@
use std::collections::HashSet;
use std::sync::Arc;
use fst::{SetBuilder, set::OpBuilder};
use sdset::{SetOperation, duo::Union};
use serde::Serialize;
use crate::indexer::Indexer;
use crate::serde::{extract_document_id, Serializer, RamDocumentStore};
use crate::RankedMap;
use crate::database::{Error, Index, index::Cache, apply_documents_deletion};
pub struct DocumentsAddition<'a, D> {
index: &'a Index,
documents: Vec<D>,
}
impl<'a, D> DocumentsAddition<'a, D> {
pub fn new(index: &'a Index) -> DocumentsAddition<'a, D> {
DocumentsAddition { index, documents: Vec::new() }
}
pub fn update_document(&mut self, document: D) {
self.documents.push(document);
}
pub fn finalize(self) -> Result<u64, Error>
where D: serde::Serialize
{
self.index.push_documents_addition(self.documents)
}
}
pub fn apply_documents_addition(
index: &Index,
mut ranked_map: RankedMap,
addition: Vec<rmpv::Value>,
) -> Result<(), Error>
{
let mut document_ids = HashSet::new();
let mut document_store = RamDocumentStore::new();
let mut indexer = Indexer::new();
let schema = &index.schema();
let identifier = schema.identifier_name();
for document in addition {
let document_id = match extract_document_id(identifier, &document)? {
Some(id) => id,
None => return Err(Error::MissingDocumentId),
};
// 1. store the document id for future deletion
document_ids.insert(document_id);
// 2. index the document fields in ram stores
let serializer = Serializer {
schema,
document_store: &mut document_store,
indexer: &mut indexer,
ranked_map: &mut ranked_map,
document_id,
};
document.serialize(serializer)?;
}
let ref_index = index.as_ref();
let docs_words = ref_index.docs_words_index;
let documents = ref_index.documents_index;
let main = ref_index.main_index;
let words = ref_index.words_index;
// 1. remove the previous documents match indexes
let document_ids = document_ids.into_iter().collect();
apply_documents_deletion(index, ranked_map.clone(), document_ids)?;
// 2. insert new document attributes in the database
for ((id, attr), value) in document_store.into_inner() {
documents.set_document_field(id, attr, value)?;
}
let indexed = indexer.build();
let mut delta_words_builder = SetBuilder::memory();
for (word, delta_set) in indexed.words_doc_indexes {
delta_words_builder.insert(&word).unwrap();
let set = match words.doc_indexes(&word)? {
Some(set) => Union::new(&set, &delta_set).into_set_buf(),
None => delta_set,
};
words.set_doc_indexes(&word, &set)?;
}
for (id, words) in indexed.docs_words {
docs_words.set_doc_words(id, &words)?;
}
let delta_words = delta_words_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap();
let words = match main.words_set()? {
Some(words) => {
let op = OpBuilder::new()
.add(words.stream())
.add(delta_words.stream())
.r#union();
let mut words_builder = SetBuilder::memory();
words_builder.extend_stream(op).unwrap();
words_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap()
},
None => delta_words,
};
main.set_words_set(&words)?;
main.set_ranked_map(&ranked_map)?;
// update the "consistent" view of the Index
let cache = ref_index.cache;
let words = Arc::new(words);
let synonyms = cache.synonyms.clone();
let schema = cache.schema.clone();
let cache = Cache { words, synonyms, schema, ranked_map };
index.cache.store(Arc::new(cache));
Ok(())
}

144
meilidb-data/src/database/update/documents_deletion.rs Normal file
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@ -0,0 +1,144 @@
use std::collections::{HashMap, BTreeSet};
use std::sync::Arc;
use fst::{SetBuilder, Streamer};
use meilidb_core::DocumentId;
use sdset::{SetBuf, SetOperation, duo::DifferenceByKey};
use crate::RankedMap;
use crate::serde::extract_document_id;
use crate::database::{Index, Error, index::Cache};
pub struct DocumentsDeletion<'a> {
index: &'a Index,
documents: Vec<DocumentId>,
}
impl<'a> DocumentsDeletion<'a> {
pub fn new(index: &'a Index) -> DocumentsDeletion<'a> {
DocumentsDeletion { index, documents: Vec::new() }
}
pub fn delete_document_by_id(&mut self, document_id: DocumentId) {
self.documents.push(document_id);
}
pub fn delete_document<D>(&mut self, document: D) -> Result<(), Error>
where D: serde::Serialize,
{
let schema = self.index.schema();
let identifier = schema.identifier_name();
let document_id = match extract_document_id(identifier, &document)? {
Some(id) => id,
None => return Err(Error::MissingDocumentId),
};
self.delete_document_by_id(document_id);
Ok(())
}
pub fn finalize(self) -> Result<u64, Error> {
self.index.push_documents_deletion(self.documents)
}
}
impl Extend<DocumentId> for DocumentsDeletion<'_> {
fn extend<T: IntoIterator<Item=DocumentId>>(&mut self, iter: T) {
self.documents.extend(iter)
}
}
pub fn apply_documents_deletion(
index: &Index,
mut ranked_map: RankedMap,
deletion: Vec<DocumentId>,
) -> Result<(), Error>
{
let ref_index = index.as_ref();
let schema = index.schema();
let docs_words = ref_index.docs_words_index;
let documents = ref_index.documents_index;
let main = ref_index.main_index;
let words = ref_index.words_index;
let idset = SetBuf::from_dirty(deletion);
// collect the ranked attributes according to the schema
let ranked_attrs: Vec<_> = schema.iter()
.filter_map(|(_, attr, prop)| {
if prop.is_ranked() { Some(attr) } else { None }
})
.collect();
let mut words_document_ids = HashMap::new();
for id in idset {
// remove all the ranked attributes from the ranked_map
for ranked_attr in &ranked_attrs {
ranked_map.remove(id, *ranked_attr);
}
if let Some(words) = docs_words.doc_words(id)? {
let mut stream = words.stream();
while let Some(word) = stream.next() {
let word = word.to_vec();
words_document_ids.entry(word).or_insert_with(Vec::new).push(id);
}
}
}
let mut removed_words = BTreeSet::new();
for (word, document_ids) in words_document_ids {
let document_ids = SetBuf::from_dirty(document_ids);
if let Some(doc_indexes) = words.doc_indexes(&word)? {
let op = DifferenceByKey::new(&doc_indexes, &document_ids, |d| d.document_id, |id| *id);
let doc_indexes = op.into_set_buf();
if !doc_indexes.is_empty() {
words.set_doc_indexes(&word, &doc_indexes)?;
} else {
words.del_doc_indexes(&word)?;
removed_words.insert(word);
}
}
for id in document_ids {
documents.del_all_document_fields(id)?;
docs_words.del_doc_words(id)?;
}
}
let removed_words = fst::Set::from_iter(removed_words).unwrap();
let words = match main.words_set()? {
Some(words_set) => {
let op = fst::set::OpBuilder::new()
.add(words_set.stream())
.add(removed_words.stream())
.difference();
let mut words_builder = SetBuilder::memory();
words_builder.extend_stream(op).unwrap();
words_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap()
},
None => fst::Set::default(),
};
main.set_words_set(&words)?;
main.set_ranked_map(&ranked_map)?;
// update the "consistent" view of the Index
let cache = ref_index.cache;
let words = Arc::new(words);
let synonyms = cache.synonyms.clone();
let schema = cache.schema.clone();
let cache = Cache { words, synonyms, schema, ranked_map };
index.cache.store(Arc::new(cache));
Ok(())
}

9
meilidb-data/src/database/update/mod.rs Normal file
View File

@ -0,0 +1,9 @@
mod documents_addition;
mod documents_deletion;
mod synonyms_addition;
mod synonyms_deletion;
pub use self::documents_addition::{DocumentsAddition, apply_documents_addition};
pub use self::documents_deletion::{DocumentsDeletion, apply_documents_deletion};
pub use self::synonyms_addition::{SynonymsAddition, apply_synonyms_addition};
pub use self::synonyms_deletion::{SynonymsDeletion, apply_synonyms_deletion};

93
meilidb-data/src/database/update/synonyms_addition.rs Normal file
View File

@ -0,0 +1,93 @@
use std::collections::BTreeMap;
use std::sync::Arc;
use fst::{SetBuilder, set::OpBuilder};
use meilidb_core::normalize_str;
use sdset::SetBuf;
use crate::database::{Error, Index,index::Cache};
pub struct SynonymsAddition<'a> {
index: &'a Index,
synonyms: BTreeMap<String, Vec<String>>,
}
impl<'a> SynonymsAddition<'a> {
pub fn new(index: &'a Index) -> SynonymsAddition<'a> {
SynonymsAddition { index, synonyms: BTreeMap::new() }
}
pub fn add_synonym<S, T, I>(&mut self, synonym: S, alternatives: I)
where S: AsRef<str>,
T: AsRef<str>,
I: IntoIterator<Item=T>,
{
let synonym = normalize_str(synonym.as_ref());
let alternatives = alternatives.into_iter().map(|s| s.as_ref().to_lowercase());
self.synonyms.entry(synonym).or_insert_with(Vec::new).extend(alternatives);
}
pub fn finalize(self) -> Result<u64, Error> {
self.index.push_synonyms_addition(self.synonyms)
}
}
pub fn apply_synonyms_addition(
index: &Index,
addition: BTreeMap<String, Vec<String>>,
) -> Result<(), Error>
{
let ref_index = index.as_ref();
let synonyms = ref_index.synonyms_index;
let main = ref_index.main_index;
let mut synonyms_builder = SetBuilder::memory();
for (synonym, alternatives) in addition {
synonyms_builder.insert(&synonym).unwrap();
let alternatives = {
let alternatives = SetBuf::from_dirty(alternatives);
let mut alternatives_builder = SetBuilder::memory();
alternatives_builder.extend_iter(alternatives).unwrap();
alternatives_builder.into_inner().unwrap()
};
synonyms.set_alternatives_to(synonym.as_bytes(), alternatives)?;
}
let delta_synonyms = synonyms_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap();
let synonyms = match main.synonyms_set()? {
Some(synonyms) => {
let op = OpBuilder::new()
.add(synonyms.stream())
.add(delta_synonyms.stream())
.r#union();
let mut synonyms_builder = SetBuilder::memory();
synonyms_builder.extend_stream(op).unwrap();
synonyms_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap()
},
None => delta_synonyms,
};
main.set_synonyms_set(&synonyms)?;
// update the "consistent" view of the Index
let cache = ref_index.cache;
let words = Arc::new(main.words_set()?.unwrap_or_default());
let ranked_map = cache.ranked_map.clone();
let synonyms = Arc::new(synonyms);
let schema = cache.schema.clone();
let cache = Cache { words, synonyms, schema, ranked_map };
index.cache.store(Arc::new(cache));
Ok(())
}

136
meilidb-data/src/database/update/synonyms_deletion.rs Normal file
View File

@ -0,0 +1,136 @@
use std::collections::BTreeMap;
use std::iter::FromIterator;
use std::sync::Arc;
use fst::{SetBuilder, set::OpBuilder};
use meilidb_core::normalize_str;
use sdset::SetBuf;
use crate::database::{Error, Index, index::Cache};
pub struct SynonymsDeletion<'a> {
index: &'a Index,
synonyms: BTreeMap<String, Option<Vec<String>>>,
}
impl<'a> SynonymsDeletion<'a> {
pub fn new(index: &'a Index) -> SynonymsDeletion<'a> {
SynonymsDeletion { index, synonyms: BTreeMap::new() }
}
pub fn delete_all_alternatives_of<S: AsRef<str>>(&mut self, synonym: S) {
let synonym = normalize_str(synonym.as_ref());
self.synonyms.insert(synonym, None);
}
pub fn delete_specific_alternatives_of<S, T, I>(&mut self, synonym: S, alternatives: I)
where S: AsRef<str>,
T: AsRef<str>,
I: Iterator<Item=T>,
{
let synonym = normalize_str(synonym.as_ref());
let value = self.synonyms.entry(synonym).or_insert(None);
let alternatives = alternatives.map(|s| s.as_ref().to_lowercase());
match value {
Some(v) => v.extend(alternatives),
None => *value = Some(Vec::from_iter(alternatives)),
}
}
pub fn finalize(self) -> Result<u64, Error> {
self.index.push_synonyms_deletion(self.synonyms)
}
}
pub fn apply_synonyms_deletion(
index: &Index,
deletion: BTreeMap<String, Option<Vec<String>>>,
) -> Result<(), Error>
{
let ref_index = index.as_ref();
let synonyms = ref_index.synonyms_index;
let main = ref_index.main_index;
let mut delete_whole_synonym_builder = SetBuilder::memory();
for (synonym, alternatives) in deletion {
match alternatives {
Some(alternatives) => {
let prev_alternatives = synonyms.alternatives_to(synonym.as_bytes())?;
let prev_alternatives = match prev_alternatives {
Some(alternatives) => alternatives,
None => continue,
};
let delta_alternatives = {
let alternatives = SetBuf::from_dirty(alternatives);
let mut builder = SetBuilder::memory();
builder.extend_iter(alternatives).unwrap();
builder.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap()
};
let op = OpBuilder::new()
.add(prev_alternatives.stream())
.add(delta_alternatives.stream())
.difference();
let (alternatives, empty_alternatives) = {
let mut builder = SetBuilder::memory();
let len = builder.get_ref().len();
builder.extend_stream(op).unwrap();
let is_empty = len == builder.get_ref().len();
let alternatives = builder.into_inner().unwrap();
(alternatives, is_empty)
};
if empty_alternatives {
delete_whole_synonym_builder.insert(synonym.as_bytes())?;
} else {
synonyms.set_alternatives_to(synonym.as_bytes(), alternatives)?;
}
},
None => {
delete_whole_synonym_builder.insert(&synonym).unwrap();
synonyms.del_alternatives_of(synonym.as_bytes())?;
}
}
}
let delta_synonyms = delete_whole_synonym_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap();
let synonyms = match main.synonyms_set()? {
Some(synonyms) => {
let op = OpBuilder::new()
.add(synonyms.stream())
.add(delta_synonyms.stream())
.difference();
let mut synonyms_builder = SetBuilder::memory();
synonyms_builder.extend_stream(op).unwrap();
synonyms_builder
.into_inner()
.and_then(fst::Set::from_bytes)
.unwrap()
},
None => fst::Set::default(),
};
main.set_synonyms_set(&synonyms)?;
// update the "consistent" view of the Index
let cache = ref_index.cache;
let words = Arc::new(main.words_set()?.unwrap_or_default());
let ranked_map = cache.ranked_map.clone();
let synonyms = Arc::new(synonyms);
let schema = cache.schema.clone();
let cache = Cache { words, synonyms, schema, ranked_map };
index.cache.store(Arc::new(cache));
Ok(())
}

4
meilidb-data/src/lib.rs
View File

@ -5,8 +5,8 @@ mod number;
mod ranked_map; mod ranked_map;
mod serde; mod serde;
pub use rocksdb; pub use sled;
pub use self::database::{Database, Index, CustomSettings}; pub use self::database::{Database, Index, CustomSettingsIndex};
pub use self::number::Number; pub use self::number::Number;
pub use self::ranked_map::RankedMap; pub use self::ranked_map::RankedMap;
pub use self::serde::{compute_document_id, extract_document_id, value_to_string}; pub use self::serde::{compute_document_id, extract_document_id, value_to_string};

94
meilidb-data/src/serde/deserializer.rs
View File

@ -1,5 +1,6 @@
use std::collections::HashSet; use std::collections::HashSet;
use std::io::Cursor; use std::io::Cursor;
use std::{fmt, error::Error};
use meilidb_core::DocumentId; use meilidb_core::DocumentId;
use meilidb_schema::SchemaAttr; use meilidb_schema::SchemaAttr;
@ -9,6 +10,43 @@ use serde::{de, forward_to_deserialize_any};
use crate::database::Index; use crate::database::Index;
#[derive(Debug)]
pub enum DeserializerError {
RmpError(RmpError),
SledError(sled::Error),
Custom(String),
}
impl de::Error for DeserializerError {
fn custom<T: fmt::Display>(msg: T) -> Self {
DeserializerError::Custom(msg.to_string())
}
}
impl fmt::Display for DeserializerError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
DeserializerError::RmpError(e) => write!(f, "rmp serde related error: {}", e),
DeserializerError::SledError(e) => write!(f, "Sled related error: {}", e),
DeserializerError::Custom(s) => f.write_str(s),
}
}
}
impl Error for DeserializerError {}
impl From<RmpError> for DeserializerError {
fn from(error: RmpError) -> DeserializerError {
DeserializerError::RmpError(error)
}
}
impl From<sled::Error> for DeserializerError {
fn from(error: sled::Error) -> DeserializerError {
DeserializerError::SledError(error)
}
}
pub struct Deserializer<'a> { pub struct Deserializer<'a> {
pub document_id: DocumentId, pub document_id: DocumentId,
pub index: &'a Index, pub index: &'a Index,
@ -17,7 +55,7 @@ pub struct Deserializer<'a> {
impl<'de, 'a, 'b> de::Deserializer<'de> for &'b mut Deserializer<'a> impl<'de, 'a, 'b> de::Deserializer<'de> for &'b mut Deserializer<'a>
{ {
type Error = RmpError; type Error = DeserializerError;
fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Self::Error> fn deserialize_any<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where V: de::Visitor<'de> where V: de::Visitor<'de>
@ -34,33 +72,41 @@ impl<'de, 'a, 'b> de::Deserializer<'de> for &'b mut Deserializer<'a>
fn deserialize_map<V>(self, visitor: V) -> Result<V::Value, Self::Error> fn deserialize_map<V>(self, visitor: V) -> Result<V::Value, Self::Error>
where V: de::Visitor<'de> where V: de::Visitor<'de>
{ {
let schema = &self.index.lease_inner().schema; let schema = self.index.schema();
let documents = &self.index.lease_inner().raw.documents; let documents = self.index.as_ref().documents_index;
let document_attributes = documents.document_fields(self.document_id); let mut error = None;
let document_attributes = document_attributes.filter_map(|result| {
match result {
Ok(value) => Some(value),
Err(e) => {
// TODO: must log the error
// error!("sled iter error; {}", e);
None
},
}
});
let iter = document_attributes.filter_map(|(attr, value)| { let iter = documents
let is_displayed = schema.props(attr).is_displayed(); .document_fields(self.document_id)
if is_displayed && self.fields.map_or(true, |f| f.contains(&attr)) { .filter_map(|result| {
let attribute_name = schema.attribute_name(attr); match result {
Some((attribute_name, Value::new(value))) Ok((attr, value)) => {
} else { let is_displayed = schema.props(attr).is_displayed();
None if is_displayed && self.fields.map_or(true, |f| f.contains(&attr)) {
} let attribute_name = schema.attribute_name(attr);
}); Some((attribute_name, Value::new(value)))
} else {
None
}
},
Err(e) => {
if error.is_none() {
error = Some(e);
}
None
}
}
});
let map_deserializer = de::value::MapDeserializer::new(iter); let map_deserializer = de::value::MapDeserializer::new(iter);
visitor.visit_map(map_deserializer) let result = visitor.visit_map(map_deserializer).map_err(DeserializerError::from);
if let Some(e) = error {
return Err(DeserializerError::from(e))
}
result
} }
} }

12
meilidb-data/src/serde/mod.rs
View File

@ -15,7 +15,7 @@ mod extract_document_id;
mod indexer; mod indexer;
mod serializer; mod serializer;
pub use self::deserializer::Deserializer; pub use self::deserializer::{Deserializer, DeserializerError};
pub use self::extract_document_id::{extract_document_id, compute_document_id, value_to_string}; pub use self::extract_document_id::{extract_document_id, compute_document_id, value_to_string};
pub use self::convert_to_string::ConvertToString; pub use self::convert_to_string::ConvertToString;
pub use self::convert_to_number::ConvertToNumber; pub use self::convert_to_number::ConvertToNumber;
@ -38,8 +38,8 @@ pub enum SerializerError {
DocumentIdNotFound, DocumentIdNotFound,
InvalidDocumentIdType, InvalidDocumentIdType,
RmpError(RmpError), RmpError(RmpError),
SledError(sled::Error),
SerdeJsonError(SerdeJsonError), SerdeJsonError(SerdeJsonError),
RocksdbError(rocksdb::Error),
ParseNumberError(ParseNumberError), ParseNumberError(ParseNumberError),
UnserializableType { type_name: &'static str }, UnserializableType { type_name: &'static str },
UnindexableType { type_name: &'static str }, UnindexableType { type_name: &'static str },
@ -63,8 +63,8 @@ impl fmt::Display for SerializerError {
write!(f, "document identifier can only be of type string or number") write!(f, "document identifier can only be of type string or number")
}, },
SerializerError::RmpError(e) => write!(f, "rmp serde related error: {}", e), SerializerError::RmpError(e) => write!(f, "rmp serde related error: {}", e),
SerializerError::SledError(e) => write!(f, "Sled related error: {}", e),
SerializerError::SerdeJsonError(e) => write!(f, "serde json error: {}", e), SerializerError::SerdeJsonError(e) => write!(f, "serde json error: {}", e),
SerializerError::RocksdbError(e) => write!(f, "RocksDB related error: {}", e),
SerializerError::ParseNumberError(e) => { SerializerError::ParseNumberError(e) => {
write!(f, "error while trying to parse a number: {}", e) write!(f, "error while trying to parse a number: {}", e)
}, },
@ -102,9 +102,9 @@ impl From<SerdeJsonError> for SerializerError {
} }
} }
impl From<rocksdb::Error> for SerializerError { impl From<sled::Error> for SerializerError {
fn from(error: rocksdb::Error) -> SerializerError { fn from(error: sled::Error) -> SerializerError {
SerializerError::RocksdbError(error) SerializerError::SledError(error)
} }
} }

43
meilidb-data/tests/updates.rs
View File

@ -1,3 +1,6 @@
use std::sync::atomic::{AtomicBool, Ordering::Relaxed};
use std::sync::Arc;
use serde_json::json; use serde_json::json;
use meilidb_data::Database; use meilidb_data::Database;
use meilidb_schema::{Schema, SchemaBuilder, DISPLAYED, INDEXED}; use meilidb_schema::{Schema, SchemaBuilder, DISPLAYED, INDEXED};
@ -12,16 +15,24 @@ fn simple_schema() -> Schema {
#[test] #[test]
fn insert_delete_document() { fn insert_delete_document() {
let tmp_dir = tempfile::tempdir().unwrap(); let tmp_dir = tempfile::tempdir().unwrap();
let database = Database::start_default(&tmp_dir).unwrap(); let database = Database::open(&tmp_dir).unwrap();
let as_been_updated = Arc::new(AtomicBool::new(false));
let schema = simple_schema(); let schema = simple_schema();
let index = database.create_index("hello", schema).unwrap(); let index = database.create_index("hello", schema).unwrap();
let as_been_updated_clone = as_been_updated.clone();
index.set_update_callback(move |_| as_been_updated_clone.store(true, Relaxed));
let doc1 = json!({ "objectId": 123, "title": "hello" }); let doc1 = json!({ "objectId": 123, "title": "hello" });
let mut addition = index.documents_addition(); let mut addition = index.documents_addition();
addition.update_document(&doc1).unwrap(); addition.update_document(&doc1);
addition.finalize().unwrap(); let update_id = addition.finalize().unwrap();
let status = index.update_status_blocking(update_id).unwrap();
assert!(as_been_updated.swap(false, Relaxed));
assert!(status.result.is_ok());
let docs = index.query_builder().query("hello", 0..10).unwrap(); let docs = index.query_builder().query("hello", 0..10).unwrap();
assert_eq!(docs.len(), 1); assert_eq!(docs.len(), 1);
@ -29,7 +40,10 @@ fn insert_delete_document() {
let mut deletion = index.documents_deletion(); let mut deletion = index.documents_deletion();
deletion.delete_document(&doc1).unwrap(); deletion.delete_document(&doc1).unwrap();
deletion.finalize().unwrap(); let update_id = deletion.finalize().unwrap();
let status = index.update_status_blocking(update_id).unwrap();
assert!(as_been_updated.swap(false, Relaxed));
assert!(status.result.is_ok());
let docs = index.query_builder().query("hello", 0..10).unwrap(); let docs = index.query_builder().query("hello", 0..10).unwrap();
assert_eq!(docs.len(), 0); assert_eq!(docs.len(), 0);
@ -38,25 +52,36 @@ fn insert_delete_document() {
#[test] #[test]
fn replace_document() { fn replace_document() {
let tmp_dir = tempfile::tempdir().unwrap(); let tmp_dir = tempfile::tempdir().unwrap();
let database = Database::start_default(&tmp_dir).unwrap(); let database = Database::open(&tmp_dir).unwrap();
let as_been_updated = Arc::new(AtomicBool::new(false));
let schema = simple_schema(); let schema = simple_schema();
let index = database.create_index("hello", schema).unwrap(); let index = database.create_index("hello", schema).unwrap();
let as_been_updated_clone = as_been_updated.clone();
index.set_update_callback(move |_| as_been_updated_clone.store(true, Relaxed));
let doc1 = json!({ "objectId": 123, "title": "hello" }); let doc1 = json!({ "objectId": 123, "title": "hello" });
let doc2 = json!({ "objectId": 123, "title": "coucou" }); let doc2 = json!({ "objectId": 123, "title": "coucou" });
let mut addition = index.documents_addition(); let mut addition = index.documents_addition();
addition.update_document(&doc1).unwrap(); addition.update_document(&doc1);
addition.finalize().unwrap(); let update_id = addition.finalize().unwrap();
let status = index.update_status_blocking(update_id).unwrap();
assert!(as_been_updated.swap(false, Relaxed));
assert!(status.result.is_ok());
let docs = index.query_builder().query("hello", 0..10).unwrap(); let docs = index.query_builder().query("hello", 0..10).unwrap();
assert_eq!(docs.len(), 1); assert_eq!(docs.len(), 1);
assert_eq!(index.document(None, docs[0].id).unwrap().as_ref(), Some(&doc1)); assert_eq!(index.document(None, docs[0].id).unwrap().as_ref(), Some(&doc1));
let mut deletion = index.documents_addition(); let mut deletion = index.documents_addition();
deletion.update_document(&doc2).unwrap(); deletion.update_document(&doc2);
deletion.finalize().unwrap(); let update_id = deletion.finalize().unwrap();
let status = index.update_status_blocking(update_id).unwrap();
assert!(as_been_updated.swap(false, Relaxed));
assert!(status.result.is_ok());
let docs = index.query_builder().query("hello", 0..10).unwrap(); let docs = index.query_builder().query("hello", 0..10).unwrap();
assert_eq!(docs.len(), 0); assert_eq!(docs.len(), 0);

12
meilidb-schema/src/lib.rs
View File

@ -99,14 +99,14 @@ struct InnerSchema {
} }
impl Schema { impl Schema {
pub fn from_toml<R: Read>(mut reader: R) -> Result<Schema, Box<Error>> { pub fn from_toml<R: Read>(mut reader: R) -> Result<Schema, Box<dyn Error>> {
let mut buffer = Vec::new(); let mut buffer = Vec::new();
reader.read_to_end(&mut buffer)?; reader.read_to_end(&mut buffer)?;
let builder: SchemaBuilder = toml::from_slice(&buffer)?; let builder: SchemaBuilder = toml::from_slice(&buffer)?;
Ok(builder.build()) Ok(builder.build())
} }
pub fn to_toml<W: Write>(&self, mut writer: W) -> Result<(), Box<Error>> { pub fn to_toml<W: Write>(&self, mut writer: W) -> Result<(), Box<dyn Error>> {
let identifier = self.inner.identifier.clone(); let identifier = self.inner.identifier.clone();
let attributes = self.attributes_ordered(); let attributes = self.attributes_ordered();
let builder = SchemaBuilder { identifier, attributes }; let builder = SchemaBuilder { identifier, attributes };
@ -117,14 +117,14 @@ impl Schema {
Ok(()) Ok(())
} }
pub fn from_json<R: Read>(mut reader: R) -> Result<Schema, Box<Error>> { pub fn from_json<R: Read>(mut reader: R) -> Result<Schema, Box<dyn Error>> {
let mut buffer = Vec::new(); let mut buffer = Vec::new();
reader.read_to_end(&mut buffer)?; reader.read_to_end(&mut buffer)?;
let builder: SchemaBuilder = serde_json::from_slice(&buffer)?; let builder: SchemaBuilder = serde_json::from_slice(&buffer)?;
Ok(builder.build()) Ok(builder.build())
} }
pub fn to_json<W: Write>(&self, mut writer: W) -> Result<(), Box<Error>> { pub fn to_json<W: Write>(&self, mut writer: W) -> Result<(), Box<dyn Error>> {
let identifier = self.inner.identifier.clone(); let identifier = self.inner.identifier.clone();
let attributes = self.attributes_ordered(); let attributes = self.attributes_ordered();
let builder = SchemaBuilder { identifier, attributes }; let builder = SchemaBuilder { identifier, attributes };
@ -245,7 +245,7 @@ mod tests {
} }
#[test] #[test]
fn serialize_deserialize_toml() -> Result<(), Box<Error>> { fn serialize_deserialize_toml() -> Result<(), Box<dyn Error>> {
let mut builder = SchemaBuilder::with_identifier("id"); let mut builder = SchemaBuilder::with_identifier("id");
builder.new_attribute("alpha", DISPLAYED); builder.new_attribute("alpha", DISPLAYED);
builder.new_attribute("beta", DISPLAYED | INDEXED); builder.new_attribute("beta", DISPLAYED | INDEXED);
@ -278,7 +278,7 @@ mod tests {
} }
#[test] #[test]
fn serialize_deserialize_json() -> Result<(), Box<Error>> { fn serialize_deserialize_json() -> Result<(), Box<dyn Error>> {
let mut builder = SchemaBuilder::with_identifier("id"); let mut builder = SchemaBuilder::with_identifier("id");
builder.new_attribute("alpha", DISPLAYED); builder.new_attribute("alpha", DISPLAYED);
builder.new_attribute("beta", DISPLAYED | INDEXED); builder.new_attribute("beta", DISPLAYED | INDEXED);

10
meilidb/examples/create-database.rs
View File

@ -6,7 +6,6 @@ use std::io::{self, BufRead, BufReader};
use std::path::{Path, PathBuf}; use std::path::{Path, PathBuf};
use std::time::Instant; use std::time::Instant;
use std::error::Error; use std::error::Error;
use std::borrow::Cow;
use std::fs::File; use std::fs::File;
use diskus::Walk; use diskus::Walk;
@ -44,9 +43,8 @@ pub struct Opt {
} }
#[derive(Serialize, Deserialize)] #[derive(Serialize, Deserialize)]
struct Document<'a> ( struct Document (
#[serde(borrow)] HashMap<String, String>
HashMap<Cow<'a, str>, Cow<'a, str>>
); );
#[derive(Debug, Clone, Serialize, Deserialize)] #[derive(Debug, Clone, Serialize, Deserialize)]
@ -85,7 +83,7 @@ fn index(
synonyms: Vec<Synonym>, synonyms: Vec<Synonym>,
) -> Result<Database, Box<dyn Error>> ) -> Result<Database, Box<dyn Error>>
{ {
let database = Database::start_default(database_path)?; let database = Database::open(database_path)?;
let mut wtr = csv::Writer::from_path("./stats.csv").unwrap(); let mut wtr = csv::Writer::from_path("./stats.csv").unwrap();
wtr.write_record(&["NumberOfDocuments", "DiskUsed", "MemoryUsed"])?; wtr.write_record(&["NumberOfDocuments", "DiskUsed", "MemoryUsed"])?;
@ -138,7 +136,7 @@ fn index(
} }
}; };
update.update_document(&document)?; update.update_document(document);
print!("\rindexing document {}", i); print!("\rindexing document {}", i);
i += 1; i += 1;

2
meilidb/examples/query-database.rs
View File

@ -143,7 +143,7 @@ fn main() -> Result<(), Box<dyn Error>> {
let opt = Opt::from_args(); let opt = Opt::from_args();
let start = Instant::now(); let start = Instant::now();
let database = Database::start_default(&opt.database_path)?; let database = Database::open(&opt.database_path)?;
let index = database.open_index("test")?.unwrap(); let index = database.open_index("test")?.unwrap();
let schema = index.schema(); let schema = index.schema();