Add settings route

crates/meilisearch/src/routes/indexes/settings.rs

@@ -520,6 +520,17 @@ make_setting_routes!(
         camelcase_attr: "chat",
         analytics: ChatAnalytics
     },
+    {
+        route: "/vector-store",
+        update_verb: patch,
+        value_type: meilisearch_types::milli::vector::VectorStoreBackend,
+        err_type: meilisearch_types::deserr::DeserrJsonError<
+            meilisearch_types::error::deserr_codes::InvalidSettingsVectorStore,
+        >,
+        attr: vector_store,
+        camelcase_attr: "vectorStore",
+        analytics: VectorStoreAnalytics
+    },
 );
 
 #[utoipa::path(
@@ -610,6 +621,7 @@ pub async fn update_all(
             facet_search: FacetSearchAnalytics::new(new_settings.facet_search.as_ref().set()),
             prefix_search: PrefixSearchAnalytics::new(new_settings.prefix_search.as_ref().set()),
             chat: ChatAnalytics::new(new_settings.chat.as_ref().set()),
+            vector_store: VectorStoreAnalytics::new(new_settings.vector_store.as_ref().set()),
         },
         &req,
     );
@@ -665,10 +677,17 @@ pub async fn get_all(
     let index = index_scheduler.index(&index_uid)?;
     let rtxn = index.read_txn()?;
     let mut new_settings = settings(&index, &rtxn, SecretPolicy::HideSecrets)?;
-    if index_scheduler.features().check_chat_completions("showing index `chat` settings").is_err() {
+
+    let features = index_scheduler.features();
+
+    if features.check_chat_completions("showing index `chat` settings").is_err() {
         new_settings.chat = Setting::NotSet;
     }
 
+    if features.check_vector_store_setting("showing index `vectorStore` settings").is_err() {
+        new_settings.vector_store = Setting::NotSet;
+    }
+
     debug!(returns = ?new_settings, "Get all settings");
     Ok(HttpResponse::Ok().json(new_settings))
 }
@@ -770,5 +789,9 @@ fn validate_settings(
         features.check_chat_completions("setting `chat` in the index settings")?;
     }
 
+    if let Setting::Set(_) = &settings.vector_store {
+        features.check_vector_store_setting("setting `vectorStore`  in the index settings")?;
+    }
+
     Ok(settings.validate()?)
 }

crates/meilisearch/src/routes/indexes/settings_analytics.rs

@@ -8,6 +8,7 @@ use std::collections::{BTreeMap, BTreeSet, HashSet};
 use meilisearch_types::facet_values_sort::FacetValuesSort;
 use meilisearch_types::locales::{Locale, LocalizedAttributesRuleView};
 use meilisearch_types::milli::update::Setting;
+use meilisearch_types::milli::vector::VectorStoreBackend;
 use meilisearch_types::milli::FilterableAttributesRule;
 use meilisearch_types::settings::{
     ChatSettings, FacetingSettings, PaginationSettings, PrefixSearchSettings,
@@ -40,6 +41,7 @@ pub struct SettingsAnalytics {
     pub facet_search: FacetSearchAnalytics,
     pub prefix_search: PrefixSearchAnalytics,
     pub chat: ChatAnalytics,
+    pub vector_store: VectorStoreAnalytics,
 }
 
 impl Aggregate for SettingsAnalytics {
@@ -200,6 +202,10 @@ impl Aggregate for SettingsAnalytics {
                 value: new.prefix_search.value.or(self.prefix_search.value),
             },
             chat: ChatAnalytics { set: new.chat.set | self.chat.set },
+            vector_store: VectorStoreAnalytics {
+                set: new.vector_store.set | self.vector_store.set,
+                value: new.vector_store.value.or(self.vector_store.value),
+            },
         })
     }
 
@@ -693,3 +699,19 @@ impl ChatAnalytics {
         SettingsAnalytics { chat: self, ..Default::default() }
     }
 }
+
+#[derive(Serialize, Default)]
+pub struct VectorStoreAnalytics {
+    pub set: bool,
+    pub value: Option<VectorStoreBackend>,
+}
+
+impl VectorStoreAnalytics {
+    pub fn new(settings: Option<&VectorStoreBackend>) -> Self {
+        Self { set: settings.is_some(), value: settings.copied() }
+    }
+
+    pub fn into_settings(self) -> SettingsAnalytics {
+        SettingsAnalytics { vector_store: self, ..Default::default() }
+    }
+}