Fix metrics feature

Metrics feature was relying on old references. Refactored with inspiration from the `get_stats` method in `meilisearch/src/routes/lib.rs`. `enable_metrics_routes` added to options in `segment_analytics`.

Resolves: #3469
See also: #2763

meilisearch/src/analytics/segment_analytics.rs

@@ -249,6 +249,7 @@ impl From<Opt> for Infos {
         // to add analytics when we add a field in the Opt.
         // Thus we must not insert `..` at the end.
         let Opt {
+            enable_metrics_route: _,
             db_path,
             http_addr,
             master_key: _,

meilisearch/src/lib.rs

@@ -92,7 +92,8 @@ pub fn create_app(
     let app = app.configure(|s| configure_metrics_route(s, opt.enable_metrics_route));
 
     #[cfg(feature = "metrics")]
-    let app = app.wrap(Condition::new(opt.enable_metrics_route, route_metrics::RouteMetrics));
+    let app =
+        app.wrap(middleware::Condition::new(opt.enable_metrics_route, route_metrics::RouteMetrics));
     app.wrap(
         Cors::default()
             .send_wildcard()

meilisearch/src/route_metrics.rs

@@ -2,21 +2,26 @@ use std::future::{ready, Ready};
 
 use actix_web::dev::{self, Service, ServiceRequest, ServiceResponse, Transform};
 use actix_web::http::header;
+use actix_web::web::Data;
 use actix_web::{Error, HttpResponse};
 use futures_util::future::LocalBoxFuture;
-use meilisearch_lib::MeiliSearch;
+use index_scheduler::IndexScheduler;
+use meilisearch_auth::AuthController;
 use meilisearch_types::error::ResponseError;
 use meilisearch_types::keys::actions;
 use prometheus::{Encoder, HistogramTimer, TextEncoder};
 
 use crate::extractors::authentication::policies::ActionPolicy;
 use crate::extractors::authentication::GuardedData;
+use crate::routes::create_all_stats;
 
 pub async fn get_metrics(
-    meilisearch: GuardedData<ActionPolicy<{ actions::METRICS_GET }>, MeiliSearch>,
+    index_scheduler: GuardedData<ActionPolicy<{ actions::METRICS_GET }>, Data<IndexScheduler>>,
+    auth_controller: GuardedData<ActionPolicy<{ actions::METRICS_GET }>, AuthController>,
 ) -> Result<HttpResponse, ResponseError> {
-    let search_rules = &meilisearch.filters().search_rules;
-    let response = meilisearch.get_all_stats(search_rules).await?;
+    let search_rules = &index_scheduler.filters().search_rules;
+    let response =
+        create_all_stats((*index_scheduler).clone(), (*auth_controller).clone(), search_rules)?;
 
     crate::metrics::MEILISEARCH_DB_SIZE_BYTES.set(response.database_size as i64);
     crate::metrics::MEILISEARCH_INDEX_COUNT.set(response.indexes.len() as i64);