better logs

backend/src/main.py

@@ -114,6 +114,7 @@ def new_trip(preferences: Preferences,
     try:
         base_tour = optimizer.solve_optimization(preferences.max_time_minute, landmarks_short)
     except Exception as exc:
+        logger.error(f"Trip generation failed: {str(exc)}")
         raise HTTPException(status_code=500, detail=f"Optimization failed: {str(exc)}") from exc
 
     t_first_stage = time.time() - start_time
@@ -126,9 +127,10 @@ def new_trip(preferences: Preferences,
                                                preferences.max_time_minute,
                                                preferences.detour_tolerance_minute)
     except TimeoutError as te :
-        logger.error(f'Refiner failed : {str(te)} Using base tour.')
+        logger.warning(f'Refiner failed : {str(te)} Using base tour.')
         refined_tour = base_tour
     except Exception as exc :
+        logger.error(f"Trip generation failed: {str(exc)}")
         raise HTTPException(status_code=500, detail=f"An unexpected error occurred: {str(exc)}") from exc
 
     t_second_stage = time.time() - start_time
@@ -164,6 +166,7 @@ def get_trip(trip_uuid: str) -> Trip:
         trip = cache_client.get(f"trip_{trip_uuid}")
         return trip
     except KeyError as exc:
+        logger.error(f"Failed to fetch trip with UUID {trip_uuid}: {str(exc)}")
         raise HTTPException(status_code=404, detail="Trip not found") from exc
 
 
@@ -182,6 +185,7 @@ def get_landmark(landmark_uuid: str) -> Landmark:
         landmark = cache_client.get(f"landmark_{landmark_uuid}")
         return landmark
     except KeyError as exc:
+        logger.error(f"Failed to fetch landmark with UUID {landmark_uuid}: {str(exc)}")
         raise HTTPException(status_code=404, detail="Landmark not found") from exc
 
 
@@ -200,6 +204,7 @@ def update_trip_time(trip_uuid: str, removed_landmark_uuid: str) -> Trip:
     try:
         trip = cache_client.get(f'trip_{trip_uuid}')
     except KeyError as exc:
+        logger.error(f"Failed to update trip with UUID {trip_uuid} (trip not found): {str(exc)}")
         raise HTTPException(status_code=404, detail='Trip not found') from exc
 
     landmarks = []
@@ -214,6 +219,7 @@ def update_trip_time(trip_uuid: str, removed_landmark_uuid: str) -> Trip:
                 landmarks.append(landmark)
             next_uuid = landmark.next_uuid  # Prepare for the next iteration
     except KeyError as exc:
+        logger.error(f"Failed to update trip with UUID {trip_uuid} : {str(exc)}")
         raise HTTPException(status_code=404, detail=f'landmark {next_uuid} not found') from exc
 
     # Re-link every thing and compute times again