test snapshots

Cargo.lock

@@ -825,6 +825,12 @@ version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f2c9736e15e7df1638a7f6eee92a6511615c738246a052af5ba86f039b65aede"
 
+[[package]]
+name = "difference"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "524cbf6897b527295dff137cec09ecf3a05f4fddffd7dfcd1585403449e74198"
+
 [[package]]
 name = "digest"
 version = "0.8.1"
@@ -849,6 +855,12 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "212d0f5754cb6769937f4501cc0e67f4f4483c8d2c3e1e922ee9edbe4ab4c7c0"
 
+[[package]]
+name = "downcast"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4bb454f0228b18c7f4c3b0ebbee346ed9c52e7443b0999cd543ff3571205701d"
+
 [[package]]
 name = "either"
 version = "1.6.1"
@@ -933,6 +945,15 @@ dependencies = [
  "miniz_oxide",
 ]
 
+[[package]]
+name = "float-cmp"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1267f4ac4f343772758f7b1bdcbe767c218bbab93bb432acbf5162bbf85a6c4"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -949,6 +970,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "fragile"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69a039c3498dc930fe810151a34ba0c1c70b02b8625035592e74432f678591f2"
+
 [[package]]
 name = "fs_extra"
 version = "1.2.0"
@@ -1688,6 +1715,7 @@ dependencies = [
  "memmap",
  "milli",
  "mime",
+ "mockall",
  "num_cpus",
  "obkv",
  "once_cell",
@@ -1847,6 +1875,39 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "mockall"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ab571328afa78ae322493cacca3efac6a0f2e0a67305b4df31fd439ef129ac0"
+dependencies = [
+ "cfg-if 1.0.0",
+ "downcast",
+ "fragile",
+ "lazy_static",
+ "mockall_derive",
+ "predicates",
+ "predicates-tree",
+]
+
+[[package]]
+name = "mockall_derive"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7e25b214433f669161f414959594216d8e6ba83b6679d3db96899c0b4639033"
+dependencies = [
+ "cfg-if 1.0.0",
+ "proc-macro2 1.0.29",
+ "quote 1.0.9",
+ "syn 1.0.77",
+]
+
+[[package]]
+name = "normalize-line-endings"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61807f77802ff30975e01f4f071c8ba10c022052f98b3294119f3e615d13e5be"
+
 [[package]]
 name = "ntapi"
 version = "0.3.6"
@@ -2119,6 +2180,35 @@ version = "0.2.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
 
+[[package]]
+name = "predicates"
+version = "1.0.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f49cfaf7fdaa3bfacc6fa3e7054e65148878354a5cfddcf661df4c851f8021df"
+dependencies = [
+ "difference",
+ "float-cmp",
+ "normalize-line-endings",
+ "predicates-core",
+ "regex",
+]
+
+[[package]]
+name = "predicates-core"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57e35a3326b75e49aa85f5dc6ec15b41108cf5aee58eabb1f274dd18b73c2451"
+
+[[package]]
+name = "predicates-tree"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7dd0fd014130206c9352efbdc92be592751b2b9274dff685348341082c6ea3d"
+dependencies = [
+ "predicates-core",
+ "treeline",
+]
+
 [[package]]
 name = "proc-macro-error"
 version = "1.0.4"
@@ -3044,6 +3134,12 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "treeline"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7f741b240f1a48843f9b8e0444fb55fb2a4ff67293b50a9179dfd5ea67f8d41"
+
 [[package]]
 name = "try-lock"
 version = "0.2.3"

meilisearch-lib/Cargo.toml

@@ -60,4 +60,5 @@ derivative = "2.2.0"
 
 [dev-dependencies]
 actix-rt = "2.2.0"
+mockall = "0.10.2"
 paste = "1.0.5"

meilisearch-lib/src/index/index.rs

@@ -0,0 +1,287 @@
+use std::collections::{BTreeSet, HashSet};
+use std::fs::create_dir_all;
+use std::marker::PhantomData;
+use std::ops::Deref;
+use std::path::Path;
+use std::sync::Arc;
+
+use chrono::{DateTime, Utc};
+use heed::{EnvOpenOptions, RoTxn};
+use milli::update::Setting;
+use milli::{obkv_to_json, FieldDistribution, FieldId};
+use serde::{Deserialize, Serialize};
+use serde_json::{Map, Value};
+use uuid::Uuid;
+
+use crate::index_controller::update_file_store::UpdateFileStore;
+use crate::EnvSizer;
+
+use super::{Checked, Settings};
+use super::error::IndexError;
+use super::update_handler::UpdateHandler;
+use super::error::Result;
+
+pub type Document = Map<String, Value>;
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct IndexMeta {
+    created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+    pub primary_key: Option<String>,
+}
+
+impl IndexMeta {
+    pub fn new(index: &Index) -> Result<Self> {
+        let txn = index.read_txn()?;
+        Self::new_txn(index, &txn)
+    }
+
+    pub fn new_txn(index: &Index, txn: &heed::RoTxn) -> Result<Self> {
+        let created_at = index.created_at(txn)?;
+        let updated_at = index.updated_at(txn)?;
+        let primary_key = index.primary_key(txn)?.map(String::from);
+        Ok(Self {
+            created_at,
+            updated_at,
+            primary_key,
+        })
+    }
+}
+
+#[derive(Serialize, Debug)]
+#[serde(rename_all = "camelCase")]
+pub struct IndexStats {
+    #[serde(skip)]
+    pub size: u64,
+    pub number_of_documents: u64,
+    /// Whether the current index is performing an update. It is initially `None` when the
+    /// index returns it, since it is the `UpdateStore` that knows what index is currently indexing. It is
+    /// later set to either true or false, we we retrieve the information from the `UpdateStore`
+    pub is_indexing: Option<bool>,
+    pub field_distribution: FieldDistribution,
+}
+
+#[derive(Clone, derivative::Derivative)]
+#[derivative(Debug)]
+pub struct Index {
+    pub uuid: Uuid,
+    #[derivative(Debug = "ignore")]
+    pub inner: Arc<milli::Index>,
+    #[derivative(Debug = "ignore")]
+    pub update_file_store: Arc<UpdateFileStore>,
+    #[derivative(Debug = "ignore")]
+    pub update_handler: Arc<UpdateHandler>,
+}
+
+impl Deref for Index {
+    type Target = milli::Index;
+
+    fn deref(&self) -> &Self::Target {
+        self.inner.as_ref()
+    }
+}
+
+impl Index {
+    pub fn open(
+        path: impl AsRef<Path>,
+        size: usize,
+        update_file_store: Arc<UpdateFileStore>,
+        uuid: Uuid,
+        update_handler: Arc<UpdateHandler>,
+    ) -> Result<Self> {
+        create_dir_all(&path)?;
+        let mut options = EnvOpenOptions::new();
+        options.map_size(size);
+        let inner = Arc::new(milli::Index::new(options, &path)?);
+        Ok(Index {
+            inner,
+            update_file_store,
+            uuid,
+            update_handler,
+        })
+    }
+
+    pub fn inner(&self) -> &milli::Index {
+        &self.inner
+    }
+
+    pub fn stats(&self) -> Result<IndexStats> {
+        let rtxn = self.read_txn()?;
+
+        Ok(IndexStats {
+            size: self.size(),
+            number_of_documents: self.number_of_documents(&rtxn)?,
+            is_indexing: None,
+            field_distribution: self.field_distribution(&rtxn)?,
+        })
+    }
+
+    pub fn meta(&self) -> Result<IndexMeta> {
+        IndexMeta::new(self)
+    }
+    pub fn settings(&self) -> Result<Settings<Checked>> {
+        let txn = self.read_txn()?;
+        self.settings_txn(&txn)
+    }
+
+    pub fn uuid(&self) -> Uuid {
+        self.uuid
+    }
+
+    pub fn settings_txn(&self, txn: &RoTxn) -> Result<Settings<Checked>> {
+        let displayed_attributes = self
+            .displayed_fields(txn)?
+            .map(|fields| fields.into_iter().map(String::from).collect());
+
+        let searchable_attributes = self
+            .searchable_fields(txn)?
+            .map(|fields| fields.into_iter().map(String::from).collect());
+
+        let filterable_attributes = self.filterable_fields(txn)?.into_iter().collect();
+
+        let sortable_attributes = self.sortable_fields(txn)?.into_iter().collect();
+
+        let criteria = self
+            .criteria(txn)?
+            .into_iter()
+            .map(|c| c.to_string())
+            .collect();
+
+        let stop_words = self
+            .stop_words(txn)?
+            .map(|stop_words| -> Result<BTreeSet<_>> {
+                Ok(stop_words.stream().into_strs()?.into_iter().collect())
+            })
+            .transpose()?
+            .unwrap_or_else(BTreeSet::new);
+        let distinct_field = self.distinct_field(txn)?.map(String::from);
+
+        // in milli each word in the synonyms map were split on their separator. Since we lost
+        // this information we are going to put space between words.
+        let synonyms = self
+            .synonyms(txn)?
+            .iter()
+            .map(|(key, values)| {
+                (
+                    key.join(" "),
+                    values.iter().map(|value| value.join(" ")).collect(),
+                )
+            })
+            .collect();
+
+        Ok(Settings {
+            displayed_attributes: match displayed_attributes {
+                Some(attrs) => Setting::Set(attrs),
+                None => Setting::Reset,
+            },
+            searchable_attributes: match searchable_attributes {
+                Some(attrs) => Setting::Set(attrs),
+                None => Setting::Reset,
+            },
+            filterable_attributes: Setting::Set(filterable_attributes),
+            sortable_attributes: Setting::Set(sortable_attributes),
+            ranking_rules: Setting::Set(criteria),
+            stop_words: Setting::Set(stop_words),
+            distinct_attribute: match distinct_field {
+                Some(field) => Setting::Set(field),
+                None => Setting::Reset,
+            },
+            synonyms: Setting::Set(synonyms),
+            _kind: PhantomData,
+        })
+    }
+
+    pub fn retrieve_documents<S: AsRef<str>>(
+        &self,
+        offset: usize,
+        limit: usize,
+        attributes_to_retrieve: Option<Vec<S>>,
+    ) -> Result<Vec<Map<String, Value>>> {
+        let txn = self.read_txn()?;
+
+        let fields_ids_map = self.fields_ids_map(&txn)?;
+        let fields_to_display =
+            self.fields_to_display(&txn, &attributes_to_retrieve, &fields_ids_map)?;
+
+        let iter = self.documents.range(&txn, &(..))?.skip(offset).take(limit);
+
+        let mut documents = Vec::new();
+
+        for entry in iter {
+            let (_id, obkv) = entry?;
+            let object = obkv_to_json(&fields_to_display, &fields_ids_map, obkv)?;
+            documents.push(object);
+        }
+
+        Ok(documents)
+    }
+
+    pub fn retrieve_document<S: AsRef<str>>(
+        &self,
+        doc_id: String,
+        attributes_to_retrieve: Option<Vec<S>>,
+    ) -> Result<Map<String, Value>> {
+        let txn = self.read_txn()?;
+
+        let fields_ids_map = self.fields_ids_map(&txn)?;
+
+        let fields_to_display =
+            self.fields_to_display(&txn, &attributes_to_retrieve, &fields_ids_map)?;
+
+        let internal_id = self
+            .external_documents_ids(&txn)?
+            .get(doc_id.as_bytes())
+            .ok_or_else(|| IndexError::DocumentNotFound(doc_id.clone()))?;
+
+        let document = self
+            .documents(&txn, std::iter::once(internal_id))?
+            .into_iter()
+            .next()
+            .map(|(_, d)| d)
+            .ok_or(IndexError::DocumentNotFound(doc_id))?;
+
+        let document = obkv_to_json(&fields_to_display, &fields_ids_map, document)?;
+
+        Ok(document)
+    }
+
+    pub fn size(&self) -> u64 {
+        self.env.size()
+    }
+
+    fn fields_to_display<S: AsRef<str>>(
+        &self,
+        txn: &heed::RoTxn,
+        attributes_to_retrieve: &Option<Vec<S>>,
+        fields_ids_map: &milli::FieldsIdsMap,
+    ) -> Result<Vec<FieldId>> {
+        let mut displayed_fields_ids = match self.displayed_fields_ids(txn)? {
+            Some(ids) => ids.into_iter().collect::<Vec<_>>(),
+            None => fields_ids_map.iter().map(|(id, _)| id).collect(),
+        };
+
+        let attributes_to_retrieve_ids = match attributes_to_retrieve {
+            Some(attrs) => attrs
+                .iter()
+                .filter_map(|f| fields_ids_map.id(f.as_ref()))
+                .collect::<HashSet<_>>(),
+            None => fields_ids_map.iter().map(|(id, _)| id).collect(),
+        };
+
+        displayed_fields_ids.retain(|fid| attributes_to_retrieve_ids.contains(fid));
+        Ok(displayed_fields_ids)
+    }
+
+    pub fn snapshot(&self, path: impl AsRef<Path>) -> Result<()> {
+        let mut dst = path.as_ref().join(format!("indexes/{}/", self.uuid));
+        create_dir_all(&dst)?;
+        dst.push("data.mdb");
+        let _txn = self.write_txn()?;
+        self.inner
+            .env
+            .copy_to_path(dst, heed::CompactionOption::Enabled)?;
+        Ok(())
+    }
+}
+

meilisearch-lib/src/index_controller/index_resolver/mod.rs

@@ -1,5 +1,5 @@
 pub mod error;
-mod index_store;
+pub mod index_store;
 pub mod uuid_store;
 
 use std::path::Path;

meilisearch-lib/src/index_controller/snapshot.rs

@@ -11,20 +11,26 @@ use tokio::time::sleep;
 use crate::compression::from_tar_gz;
 use crate::index_controller::updates::UpdateMsg;
 
-use super::index_resolver::HardStateIndexResolver;
+use super::index_resolver::IndexResolver;
+use super::index_resolver::index_store::IndexStore;
+use super::index_resolver::uuid_store::UuidStore;
 use super::updates::UpdateSender;
 
-pub struct SnapshotService {
-    index_resolver: Arc<HardStateIndexResolver>,
+pub struct SnapshotService<U, I> {
+    index_resolver: Arc<IndexResolver<U, I>>,
     update_sender: UpdateSender,
     snapshot_period: Duration,
     snapshot_path: PathBuf,
     db_name: String,
 }
 
-impl SnapshotService {
+impl<U, I> SnapshotService<U, I>
+    where
+        U: UuidStore + Sync + Send + 'static,
+        I: IndexStore + Sync + Send + 'static,
+{
     pub fn new(
-        index_resolver: Arc<HardStateIndexResolver>,
+        index_resolver: Arc<IndexResolver<U, I>>,
         update_sender: UpdateSender,
         snapshot_period: Duration,
         snapshot_path: PathBuf,
@@ -127,131 +133,161 @@ pub fn load_snapshot(
 
 #[cfg(test)]
 mod test {
-    //use std::iter::FromIterator;
-    //use std::{collections::HashSet, sync::Arc};
+    use std::{collections::HashSet, sync::Arc};
 
-    //use futures::future::{err, ok};
-    //use rand::Rng;
-    //use tokio::time::timeout;
-    //use uuid::Uuid;
+    use futures::future::{err, ok};
+    use once_cell::sync::Lazy;
+    use rand::Rng;
+    use uuid::Uuid;
 
-    //use super::*;
+    use crate::index::error::IndexError;
+    use crate::index::test::Mocker;
+    use crate::index::{Index, error::Result as IndexResult};
+    use crate::index_controller::index_resolver::IndexResolver;
+    use crate::index_controller::index_resolver::error::IndexResolverError;
+    use crate::index_controller::index_resolver::uuid_store::MockUuidStore;
+    use crate::index_controller::index_resolver::index_store::MockIndexStore;
+    use crate::index_controller::updates::create_update_handler;
 
-    //#[actix_rt::test]
-    //async fn test_normal() {
-        //let mut rng = rand::thread_rng();
-        //let uuids_num: usize = rng.gen_range(5..10);
-        //let uuids = (0..uuids_num)
-            //.map(|_| Uuid::new_v4())
-            //.collect::<HashSet<_>>();
+    use super::*;
 
-        //let mut uuid_resolver = MockUuidResolverHandle::new();
-        //let uuids_clone = uuids.clone();
-        //uuid_resolver
-            //.expect_snapshot()
-            //.times(1)
-            //.returning(move |_| Box::pin(ok(uuids_clone.clone())));
-
-        //let uuids_clone = uuids.clone();
-        //let mut index_handle = MockIndexActorHandle::new();
-        //index_handle
-            //.expect_snapshot()
-            //.withf(move |uuid, _path| uuids_clone.contains(uuid))
-            //.times(uuids_num)
-            //.returning(move |_, _| Box::pin(ok(())));
-
-        //let dir = tempfile::tempdir_in(".").unwrap();
-        //let handle = Arc::new(index_handle);
-        //let update_handle =
-            //UpdateActorHandleImpl::<Vec<u8>>::new(handle.clone(), dir.path(), 4096 * 100).unwrap();
-
-        //let snapshot_path = tempfile::tempdir_in(".").unwrap();
-        //let snapshot_service = SnapshotService::new(
-            //uuid_resolver,
-            //update_handle,
-            //Duration::from_millis(100),
-            //snapshot_path.path().to_owned(),
-            //"data.ms".to_string(),
-        //);
-
-        //snapshot_service.perform_snapshot().await.unwrap();
-    //}
-
-    //#[actix_rt::test]
-    //async fn error_performing_uuid_snapshot() {
-    //let mut uuid_resolver = MockUuidResolverHandle::new();
-    //uuid_resolver
-    //.expect_snapshot()
-    //.times(1)
-    ////abitrary error
-    //.returning(|_| Box::pin(err(UuidResolverError::NameAlreadyExist)));
-
-    //let update_handle = MockUpdateActorHandle::new();
-
-    //let snapshot_path = tempfile::tempdir_in(".").unwrap();
-    //let snapshot_service = SnapshotService::new(
-    //uuid_resolver,
-    //update_handle,
-    //Duration::from_millis(100),
-    //snapshot_path.path().to_owned(),
-    //"data.ms".to_string(),
-    //);
-
-    //assert!(snapshot_service.perform_snapshot().await.is_err());
-    ////Nothing was written to the file
-    //assert!(!snapshot_path.path().join("data.ms.snapshot").exists());
-    //}
-
-    //#[actix_rt::test]
-    //async fn error_performing_index_snapshot() {
-    //let uuid = Uuid::new_v4();
-    //let mut uuid_resolver = MockUuidResolverHandle::new();
-    //uuid_resolver
-    //.expect_snapshot()
-    //.times(1)
-    //.returning(move |_| Box::pin(ok(HashSet::from_iter(Some(uuid)))));
-
-    //let mut update_handle = MockUpdateActorHandle::new();
-    //update_handle
-    //.expect_snapshot()
-    ////abitrary error
-    //.returning(|_, _| Box::pin(err(UpdateActorError::UnexistingUpdate(0))));
-
-    //let snapshot_path = tempfile::tempdir_in(".").unwrap();
-    //let snapshot_service = SnapshotService::new(
-    //uuid_resolver,
-    //update_handle,
-    //Duration::from_millis(100),
-    //snapshot_path.path().to_owned(),
-    //"data.ms".to_string(),
-    //);
-
-    //assert!(snapshot_service.perform_snapshot().await.is_err());
-    ////Nothing was written to the file
-    //assert!(!snapshot_path.path().join("data.ms.snapshot").exists());
-    //}
-
-    //#[actix_rt::test]
-    //async fn test_loop() {
-    //let mut uuid_resolver = MockUuidResolverHandle::new();
-    //uuid_resolver
-    //.expect_snapshot()
-    ////we expect the funtion to be called between 2 and 3 time in the given interval.
-    //.times(2..4)
-    ////abitrary error, to short-circuit the function
-    //.returning(move |_| Box::pin(err(UuidResolverError::NameAlreadyExist)));
-
-    //let update_handle = MockUpdateActorHandle::new();
-
-    //let snapshot_path = tempfile::tempdir_in(".").unwrap();
-    //let snapshot_service = SnapshotService::new(
-    //uuid_resolver,
-    //update_handle,
-    //Duration::from_millis(100),
-    //snapshot_path.path().to_owned(),
-    //"data.ms".to_string(),
-    //);
-
-    //let _ = timeout(Duration::from_millis(300), snapshot_service.run()).await;
-    //}
+    fn setup() {
+        static SETUP: Lazy<()> = Lazy::new(|| {
+            if cfg!(windows) {
+                std::env::set_var("TMP", ".");
+            } else {
+                std::env::set_var("TMPDIR", ".");
+            }
+        });
+
+        // just deref to make sure the env is setup
+        *SETUP
+    }
+
+    #[actix_rt::test]
+    async fn test_normal() {
+        setup();
+
+        let mut rng = rand::thread_rng();
+        let uuids_num: usize = rng.gen_range(5..10);
+        let uuids = (0..uuids_num)
+            .map(|_| Uuid::new_v4())
+            .collect::<HashSet<_>>();
+
+        let mut uuid_store = MockUuidStore::new();
+        let uuids_clone = uuids.clone();
+        uuid_store
+            .expect_snapshot()
+            .times(1)
+            .returning(move |_| Box::pin(ok(uuids_clone.clone())));
+
+        let mut indexes = uuids.clone().into_iter().map(|uuid| {
+            let mocker = Mocker::default();
+            mocker.when("snapshot").times(1).then(|_: &Path| -> IndexResult<()> { Ok(()) });
+            mocker.when("uuid").then(move |_: ()| uuid);
+            Index::faux(mocker)
+        });
+
+        let uuids_clone = uuids.clone();
+        let mut index_store = MockIndexStore::new();
+        index_store
+            .expect_get()
+            .withf(move |uuid| uuids_clone.contains(uuid))
+            .times(uuids_num)
+            .returning(move |_| Box::pin(ok(Some(indexes.next().unwrap()))));
+
+        let index_resolver = Arc::new(IndexResolver::new(uuid_store, index_store));
+
+        let dir = tempfile::tempdir().unwrap();
+        let update_sender = create_update_handler(index_resolver.clone(), dir.path(), 4096 * 100).unwrap();
+
+        let snapshot_path = tempfile::tempdir().unwrap();
+        let snapshot_service = SnapshotService::new(
+            index_resolver,
+            update_sender,
+            Duration::from_millis(100),
+            snapshot_path.path().to_owned(),
+            "data.ms".to_string(),
+        );
+
+        snapshot_service.perform_snapshot().await.unwrap();
+    }
+
+    #[actix_rt::test]
+    async fn error_performing_uuid_snapshot() {
+        setup();
+
+        let mut uuid_store = MockUuidStore::new();
+        uuid_store
+            .expect_snapshot()
+            .once()
+            .returning(move |_| Box::pin(err(IndexResolverError::IndexAlreadyExists)));
+
+        let mut index_store = MockIndexStore::new();
+        index_store
+            .expect_get()
+            .never();
+
+        let index_resolver = Arc::new(IndexResolver::new(uuid_store, index_store));
+
+        let dir = tempfile::tempdir().unwrap();
+        let update_sender = create_update_handler(index_resolver.clone(), dir.path(), 4096 * 100).unwrap();
+
+        let snapshot_path = tempfile::tempdir().unwrap();
+        let snapshot_service = SnapshotService::new(
+            index_resolver,
+            update_sender,
+            Duration::from_millis(100),
+            snapshot_path.path().to_owned(),
+            "data.ms".to_string(),
+        );
+
+        assert!(snapshot_service.perform_snapshot().await.is_err());
+    }
+
+    #[actix_rt::test]
+    async fn error_performing_index_snapshot() {
+        setup();
+
+        let uuids: HashSet<Uuid> = vec![Uuid::new_v4()].into_iter().collect();
+
+        let mut uuid_store = MockUuidStore::new();
+        let uuids_clone = uuids.clone();
+        uuid_store
+            .expect_snapshot()
+            .once()
+            .returning(move |_| Box::pin(ok(uuids_clone.clone())));
+
+        let mut indexes = uuids.clone().into_iter().map(|uuid| {
+            let mocker = Mocker::default();
+            // index returns random error
+            mocker.when("snapshot").then(|_: &Path| -> IndexResult<()> { Err(IndexError::ExistingPrimaryKey) });
+            mocker.when("uuid").then(move |_: ()| uuid);
+            Index::faux(mocker)
+        });
+
+        let uuids_clone = uuids.clone();
+        let mut index_store = MockIndexStore::new();
+        index_store
+            .expect_get()
+            .withf(move |uuid| uuids_clone.contains(uuid))
+            .once()
+            .returning(move |_| Box::pin(ok(Some(indexes.next().unwrap()))));
+
+        let index_resolver = Arc::new(IndexResolver::new(uuid_store, index_store));
+
+        let dir = tempfile::tempdir().unwrap();
+        let update_sender = create_update_handler(index_resolver.clone(), dir.path(), 4096 * 100).unwrap();
+
+        let snapshot_path = tempfile::tempdir().unwrap();
+        let snapshot_service = SnapshotService::new(
+            index_resolver,
+            update_sender,
+            Duration::from_millis(100),
+            snapshot_path.path().to_owned(),
+            "data.ms".to_string(),
+        );
+
+        assert!(snapshot_service.perform_snapshot().await.is_err());
+    }
 }

meilisearch-lib/src/index_controller/updates/error.rs

@@ -3,10 +3,7 @@ use std::fmt;
 
 use meilisearch_error::{Code, ErrorCode};
 
-use crate::{
-    document_formats::DocumentFormatError,
-    index_controller::{update_file_store::UpdateFileStoreError, DocumentAdditionFormat},
-};
+use crate::{document_formats::DocumentFormatError, index::error::IndexError, index_controller::{update_file_store::UpdateFileStoreError, DocumentAdditionFormat}};
 
 pub type Result<T> = std::result::Result<T, UpdateLoopError>;
 
@@ -28,6 +25,8 @@ pub enum UpdateLoopError {
     PayloadError(#[from] actix_web::error::PayloadError),
     #[error("A {0} payload is missing.")]
     MissingPayload(DocumentAdditionFormat),
+    #[error("{0}")]
+    IndexError(#[from] IndexError),
 }
 
 impl<T> From<tokio::sync::mpsc::error::SendError<T>> for UpdateLoopError
@@ -58,7 +57,6 @@ impl ErrorCode for UpdateLoopError {
         match self {
             Self::UnexistingUpdate(_) => Code::NotFound,
             Self::Internal(_) => Code::Internal,
-            //Self::IndexActor(e) => e.error_code(),
             Self::FatalUpdateStoreError => Code::Internal,
             Self::DocumentFormatError(error) => error.error_code(),
             Self::PayloadError(error) => match error {
@@ -66,6 +64,7 @@ impl ErrorCode for UpdateLoopError {
                 _ => Code::Internal,
             },
             Self::MissingPayload(_) => Code::MissingPayload,
+            Self::IndexError(e) => e.error_code(),
         }
     }
 }

meilisearch-lib/src/index_controller/updates/mod.rs

@@ -26,16 +26,22 @@ use crate::index::{Index, Settings, Unchecked};
 use crate::index_controller::update_file_store::UpdateFileStore;
 use status::UpdateStatus;
 
-use super::index_resolver::HardStateIndexResolver;
+use super::index_resolver::index_store::IndexStore;
+use super::index_resolver::uuid_store::UuidStore;
+use super::index_resolver::IndexResolver;
 use super::{DocumentAdditionFormat, Update};
 
 pub type UpdateSender = mpsc::Sender<UpdateMsg>;
 
-pub fn create_update_handler(
-    index_resolver: Arc<HardStateIndexResolver>,
+pub fn create_update_handler<U, I>(
+    index_resolver: Arc<IndexResolver<U, I>>,
     db_path: impl AsRef<Path>,
     update_store_size: usize,
-) -> anyhow::Result<UpdateSender> {
+) -> anyhow::Result<UpdateSender>
+    where
+        U: UuidStore + Sync + Send + 'static,
+        I: IndexStore + Sync + Send + 'static,
+{
     let path = db_path.as_ref().to_owned();
     let (sender, receiver) = mpsc::channel(100);
     let actor = UpdateLoop::new(update_store_size, receiver, path, index_resolver)?;
@@ -95,12 +101,16 @@ pub struct UpdateLoop {
 }
 
 impl UpdateLoop {
-    pub fn new(
+    pub fn new<U, I>(
         update_db_size: usize,
         inbox: mpsc::Receiver<UpdateMsg>,
         path: impl AsRef<Path>,
-        index_resolver: Arc<HardStateIndexResolver>,
-    ) -> anyhow::Result<Self> {
+        index_resolver: Arc<IndexResolver<U, I>>,
+    ) -> anyhow::Result<Self>
+    where
+        U: UuidStore + Sync + Send + 'static,
+        I: IndexStore + Sync + Send + 'static,
+    {
         let path = path.as_ref().to_owned();
         std::fs::create_dir_all(&path)?;
 

meilisearch-lib/src/index_controller/updates/store/mod.rs

@@ -29,6 +29,8 @@ use codec::*;
 use super::error::Result;
 use super::status::{Enqueued, Processing};
 use crate::index::Index;
+use crate::index_controller::index_resolver::index_store::IndexStore;
+use crate::index_controller::index_resolver::uuid_store::UuidStore;
 use crate::index_controller::updates::*;
 use crate::EnvSizer;
 
@@ -157,13 +159,17 @@ impl UpdateStore {
         ))
     }
 
-    pub fn open(
+    pub fn open<U, I>(
         options: EnvOpenOptions,
         path: impl AsRef<Path>,
-        index_resolver: Arc<HardStateIndexResolver>,
+        index_resolver: Arc<IndexResolver<U, I>>,
         must_exit: Arc<AtomicBool>,
         update_file_store: UpdateFileStore,
-    ) -> anyhow::Result<Arc<Self>> {
+    ) -> anyhow::Result<Arc<Self>>
+    where
+        U: UuidStore + Sync + Send + 'static,
+        I: IndexStore + Sync + Send + 'static,
+    {
         let (update_store, mut notification_receiver) =
             Self::new(options, path, update_file_store)?;
         let update_store = Arc::new(update_store);
@@ -296,10 +302,14 @@ impl UpdateStore {
     /// 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(
+    fn process_pending_update<U, I>(
         &self,
-        index_resolver: Arc<HardStateIndexResolver>,
-    ) -> Result<Option<()>> {
+        index_resolver: Arc<IndexResolver<U, I>>,
+    ) -> Result<Option<()>>
+    where
+        U: UuidStore + Sync + Send + 'static,
+        I: IndexStore + Sync + Send + 'static,
+    {
         // 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_queue.first(&rtxn)?;
@@ -325,13 +335,17 @@ impl UpdateStore {
         }
     }
 
-    fn perform_update(
+    fn perform_update<U, I>(
         &self,
         processing: Processing,
-        index_resolver: Arc<HardStateIndexResolver>,
+        index_resolver: Arc<IndexResolver<U, I>>,
         index_uuid: Uuid,
         global_id: u64,
-    ) -> Result<Option<()>> {
+    ) -> Result<Option<()>>
+    where
+        U: UuidStore + Sync + Send + 'static,
+        I: IndexStore + Sync + Send + 'static,
+    {
         // Process the pending update using the provided user function.
         let handle = Handle::current();
         let update_id = processing.id();
@@ -519,8 +533,7 @@ impl UpdateStore {
                 } = pending.decode()?
                 {
                     self.update_file_store
-                        .snapshot(content_uuid, &path)
-                        .unwrap();
+                        .snapshot(content_uuid, &path)?;
                 }
             }
         }
@@ -528,8 +541,7 @@ impl UpdateStore {
         let path = path.as_ref().to_owned();
         indexes
             .par_iter()
-            .try_for_each(|index| index.snapshot(&path))
-            .unwrap();
+            .try_for_each(|index| index.snapshot(&path))?;
 
         Ok(())
     }