fixes after review

meilisearch-http/src/data/mod.rs

@@ -4,9 +4,11 @@ use std::sync::Arc;
 use sha2::Digest;
 
 use crate::index::Settings;
-use crate::index_controller::IndexController;
+use crate::index_controller::{IndexController, IndexStats};
 use crate::index_controller::{IndexMetadata, IndexSettings};
 use crate::option::Opt;
+use std::collections::HashMap;
+use chrono::{DateTime, Utc};
 
 pub mod search;
 mod updates;
@@ -37,6 +39,13 @@ pub struct ApiKeys {
     pub master: Option<String>,
 }
 
+#[derive(Default)]
+pub struct Stats {
+    pub database_size: u64,
+    pub last_update: Option<DateTime<Utc>>,
+    pub indexes: HashMap<String, IndexStats>,
+}
+
 impl ApiKeys {
     pub fn generate_missing_api_keys(&mut self) {
         if let Some(master_key) = &self.master {
@@ -104,6 +113,27 @@ impl Data {
         Ok(meta)
     }
 
+    pub async fn get_index_stats(&self, uid: String) -> anyhow::Result<IndexStats> {
+        Ok(self.index_controller.get_stats(uid).await?)
+    }
+
+    pub async fn get_stats(&self) -> anyhow::Result<Stats> {
+        let mut stats = Stats::default();
+
+        for index in self.index_controller.list_indexes().await? {
+            let index_stats = self.index_controller.get_stats(index.uid.clone()).await?;
+
+            stats.database_size += index_stats.size;
+            stats.last_update = Some(match stats.last_update {
+                Some(last_update) => last_update.max(index.meta.updated_at),
+                None => index.meta.updated_at,
+            });
+            stats.indexes.insert(index.uid, index_stats);
+        }
+
+        Ok(stats)
+    }
+
     #[inline]
     pub fn http_payload_size_limit(&self) -> usize {
         self.options.http_payload_size_limit.get_bytes() as usize