editoast: fix projection endpoint

Co-authored-by: Youness CHRIFI ALAOUI <youness.chrifi@gmail.com>
Signed-off-by: Florian Amsallem <florian.amsallem@gmail.com>
Signed-off-by: Youness CHRIFI ALAOUI <youness.chrifi@gmail.com>

editoast/src/views/train_schedule.rs

@@ -796,6 +796,8 @@ async fn get_path(
 #[cfg(test)]
 mod tests {
     use axum::http::StatusCode;
+    use chrono::DateTime;
+    use chrono::Utc;
     use pretty_assertions::assert_eq;
     use rstest::rstest;
     use serde_json::json;
@@ -920,8 +922,7 @@ mod tests {
         )
     }
 
-    async fn app_infra_id_train_schedule_id_for_simulation_tests() -> (TestApp, i64, i64) {
-        let db_pool = DbConnectionPoolV2::for_tests();
+    fn mocked_core_pathfinding_sim_and_proj(train_id: i64) -> MockingClient {
         let mut core = MockingClient::new();
         core.stub("/v2/pathfinding/blocks")
             .method(reqwest::Method::POST)
@@ -975,10 +976,18 @@ mod tests {
                 }
             }))
             .finish();
-        let app = TestAppBuilder::new()
-            .db_pool(db_pool.clone())
-            .core_client(core.into())
-            .build();
+        core.stub("/v2/signal_projection")
+            .method(reqwest::Method::POST)
+            .response(StatusCode::OK)
+            .json(json!({
+                "signal_updates": {train_id.to_string(): [] },
+            }))
+            .finish();
+        core
+    }
+
+    async fn app_infra_id_train_schedule_id_for_simulation_tests() -> (TestApp, i64, i64) {
+        let db_pool = DbConnectionPoolV2::for_tests();
         let small_infra = create_small_infra(&mut db_pool.get_ok()).await;
         let rolling_stock =
             create_fast_rolling_stock(&mut db_pool.get_ok(), "simulation_rolling_stock").await;
@@ -997,6 +1006,11 @@ mod tests {
             .create(&mut db_pool.get_ok())
             .await
             .expect("Failed to create train schedule");
+        let core = mocked_core_pathfinding_sim_and_proj(train_schedule.id);
+        let app = TestAppBuilder::new()
+            .db_pool(db_pool.clone())
+            .core_client(core.into())
+            .build();
         (app, small_infra.id, train_schedule.id)
     }
 
@@ -1024,4 +1038,79 @@ mod tests {
         }));
         app.fetch(request).assert_status(StatusCode::OK);
     }
+
+    #[derive(Deserialize)]
+    struct PartialProjectPathTrainResult {
+        departure_time: DateTime<Utc>,
+        // Ignore the rest of the payload
+    }
+
+    #[rstest]
+    async fn train_schedule_project_path() {
+        // SETUP
+        let db_pool = DbConnectionPoolV2::for_tests();
+
+        let small_infra = create_small_infra(&mut db_pool.get_ok()).await;
+        let rolling_stock =
+            create_fast_rolling_stock(&mut db_pool.get_ok(), "simulation_rolling_stock").await;
+        let timetable = create_timetable(&mut db_pool.get_ok()).await;
+        let train_schedule_base: TrainScheduleBase = TrainScheduleBase {
+            rolling_stock_name: rolling_stock.name.clone(),
+            ..serde_json::from_str(include_str!("../tests/train_schedules/simple.json"))
+                .expect("Unable to parse")
+        };
+        let train_schedule: Changeset<TrainSchedule> = TrainScheduleForm {
+            timetable_id: Some(timetable.id),
+            train_schedule: train_schedule_base.clone(),
+        }
+        .into();
+        let train_schedule_valid = train_schedule
+            .create(&mut db_pool.get_ok())
+            .await
+            .expect("Failed to create train schedule");
+
+        let train_schedule_fail: Changeset<TrainSchedule> = TrainScheduleForm {
+            timetable_id: Some(timetable.id),
+            train_schedule: TrainScheduleBase {
+                rolling_stock_name: "fail".to_string(),
+                start_time: DateTime::from_timestamp(0, 0).unwrap(),
+                ..train_schedule_base.clone()
+            },
+        }
+        .into();
+
+        let train_schedule_fail = train_schedule_fail
+            .create(&mut db_pool.get_ok())
+            .await
+            .expect("Failed to create train schedule");
+
+        let core = mocked_core_pathfinding_sim_and_proj(train_schedule_valid.id);
+        let app = TestAppBuilder::new()
+            .db_pool(db_pool.clone())
+            .core_client(core.into())
+            .build();
+
+        // TEST
+        let request = app.post("/train_schedule/project_path").json(&json!({
+            "infra_id": small_infra.id,
+            "electrical_profile_set_id": null,
+            "ids": vec![train_schedule_fail.id, train_schedule_valid.id],
+            "path": {
+                "track_section_ranges": [
+                    {"track_section": "TA1", "begin": 0, "end": 100, "direction": "START_TO_STOP"}
+                ],
+                "routes": [],
+                "blocks": []
+            }
+        }));
+        let response: HashMap<i64, PartialProjectPathTrainResult> =
+            app.fetch(request).assert_status(StatusCode::OK).json_into();
+
+        // EXPECT
+        assert_eq!(response.len(), 1);
+        assert_eq!(
+            response[&train_schedule_valid.id].departure_time,
+            train_schedule_base.start_time
+        );
+    }
 }

editoast/src/views/train_schedule/projection.rs

@@ -198,7 +198,7 @@ async fn project_path(
     let mut trains_hash_values = vec![];
     let mut trains_details = vec![];
 
-    for (sim, pathfinding_result) in simulations {
+    for (train, (sim, pathfinding_result)) in izip!(&trains, simulations) {
         let track_ranges = match pathfinding_result {
             PathfindingResult::Success(PathfindingResultSuccess {
                 track_section_ranges,
@@ -221,6 +221,7 @@ async fn project_path(
         } = report_train;
 
         let train_details = TrainSimulationDetails {
+            train_id: train.id,
             positions,
             times,
             signal_critical_positions,
@@ -242,17 +243,13 @@ async fn project_path(
     let cached_projections: Vec<Option<CachedProjectPathTrainResult>> =
         valkey_conn.json_get_bulk(&trains_hash_values).await?;
 
-    let mut hit_cache: HashMap<i64, CachedProjectPathTrainResult> = HashMap::new();
-    let mut miss_cache = HashMap::new();
-    for (train_details, projection, train_id) in izip!(
-        trains_details,
-        cached_projections,
-        trains.iter().map(|t| t.id)
-    ) {
+    let mut hit_cache = vec![];
+    let mut miss_cache = vec![];
+    for (train_details, projection) in izip!(&trains_details, cached_projections) {
         if let Some(cached) = projection {
-            hit_cache.insert(train_id, cached);
+            hit_cache.push((cached, train_details.train_id));
         } else {
-            miss_cache.insert(train_id, train_details.clone());
+            miss_cache.push(train_details.clone());
         }
     }
 
@@ -277,47 +274,47 @@ async fn project_path(
     let signal_updates = signal_updates?;
 
     // 3. Store the projection in the cache (using pipeline)
-    let trains_hash_values: HashMap<_, _> = trains
+    let trains_hash_values: HashMap<_, _> = trains_details
         .iter()
-        .map(|t| t.id)
+        .map(|t| t.train_id)
         .zip(trains_hash_values)
         .collect();
     let mut new_items = vec![];
-    for id in miss_cache.keys() {
-        let hash = &trains_hash_values[id];
+    for train_id in miss_cache.iter().map(|t| t.train_id) {
+        let hash = &trains_hash_values[&train_id];
         let cached_value = CachedProjectPathTrainResult {
             space_time_curves: space_time_curves
-                .get(id)
+                .get(&train_id)
                 .expect("Space time curves not available for train")
                 .clone(),
             signal_updates: signal_updates
-                .get(id)
+                .get(&train_id)
                 .expect("Signal update not available for train")
                 .clone(),
         };
-        hit_cache.insert(*id, cached_value.clone());
+        hit_cache.push((cached_value.clone(), train_id));
         new_items.push((hash, cached_value));
     }
     valkey_conn.json_set_bulk(&new_items).await?;
 
     let train_map: HashMap<i64, TrainSchedule> = trains.into_iter().map(|ts| (ts.id, ts)).collect();
 
     // 4.1 Fetch rolling stock length
-    let mut project_path_result = HashMap::new();
     let rolling_stock_length: HashMap<_, _> = rolling_stocks
         .into_iter()
         .map(|rs| (rs.name, rs.length))
         .collect();
 
     // 4.2 Build the projection response
-    for (id, cached) in hit_cache {
-        let train = train_map.get(&id).expect("Train not found");
+    let mut project_path_result = HashMap::new();
+    for (cached, train_id) in hit_cache {
+        let train = train_map.get(&train_id).expect("Train not found");
         let length = rolling_stock_length
             .get(&train.rolling_stock_name)
             .expect("Rolling stock length not found");
 
         project_path_result.insert(
-            id,
+            train_id,
             ProjectPathTrainResult {
                 departure_time: train.start_time,
                 rolling_stock_length: (length * 1000.).round() as u64,
@@ -332,6 +329,7 @@ async fn project_path(
 /// Input for the projection of a train schedule on a path
 #[derive(Debug, Clone, Hash)]
 struct TrainSimulationDetails {
+    train_id: i64,
     positions: Vec<u64>,
     times: Vec<u64>,
     train_path: Vec<TrackRange>,
@@ -346,7 +344,7 @@ async fn compute_batch_signal_updates<'a>(
     path_track_ranges: &'a Vec<TrackRange>,
     path_routes: &'a Vec<Identifier>,
     path_blocks: &'a Vec<Identifier>,
-    trains_details: &'a HashMap<i64, TrainSimulationDetails>,
+    trains_details: &'a [TrainSimulationDetails],
 ) -> Result<HashMap<i64, Vec<SignalUpdate>>> {
     if trains_details.is_empty() {
         return Ok(HashMap::new());
@@ -359,13 +357,13 @@ async fn compute_batch_signal_updates<'a>(
         blocks: path_blocks,
         train_simulations: trains_details
             .iter()
-            .map(|(id, details)| {
+            .map(|detail| {
                 (
-                    *id,
+                    detail.train_id,
                     TrainSimulation {
-                        signal_critical_positions: &details.signal_critical_positions,
-                        zone_updates: &details.zone_updates,
-                        simulation_end_time: details.times[details.times.len() - 1],
+                        signal_critical_positions: &detail.signal_critical_positions,
+                        zone_updates: &detail.zone_updates,
+                        simulation_end_time: detail.times[detail.times.len() - 1],
                     },
                 )
             })
@@ -377,14 +375,14 @@ async fn compute_batch_signal_updates<'a>(
 
 /// Compute space time curves of a list of train schedules
 async fn compute_batch_space_time_curves<'a>(
-    trains_details: &HashMap<i64, TrainSimulationDetails>,
+    trains_details: &Vec<TrainSimulationDetails>,
     path_projection: &PathProjection<'a>,
 ) -> HashMap<i64, Vec<SpaceTimeCurve>> {
     let mut space_time_curves = HashMap::new();
 
-    for (train_id, train_detail) in trains_details {
+    for train_detail in trains_details {
         space_time_curves.insert(
-            *train_id,
+            train_detail.train_id,
             compute_space_time_curves(train_detail, path_projection),
         );
     }
@@ -584,6 +582,7 @@ mod tests {
         ];
 
         let project_path_input = TrainSimulationDetails {
+            train_id: 0,
             positions,
             times,
             train_path,
@@ -618,6 +617,7 @@ mod tests {
         ];
 
         let project_path_input = TrainSimulationDetails {
+            train_id: 0,
             positions: positions.clone(),
             times: times.clone(),
             train_path,
@@ -655,6 +655,7 @@ mod tests {
         let path_projection = PathProjection::new(&path);
 
         let project_path_input = TrainSimulationDetails {
+            train_id: 0,
             positions,
             times,
             train_path,