rebuild router when processing updates

src/c3nav/mapdata/models/update.py

@@ -126,6 +126,10 @@ class MapUpdate(models.Model):
             from c3nav.mapdata.render.renderdata import LevelRenderData
             LevelRenderData.rebuild()
 
+            logger.info('Rebuilding router...')
+            from c3nav.routing.router import Router
+            Router.rebuild()
+
             transaction.on_commit(
                 lambda: cache.set('mapdata:last_processed_update', new_updates[-1].to_tuple, 900)
             )

src/c3nav/routing/router.py

@@ -33,7 +33,7 @@ class Router:
         return max(area.get_altitudes(point)[0] for area in areas if area.geometry_prep.intersects(point))
 
     @classmethod
-    def build(cls):
+    def rebuild(cls):
         levels_query = Level.objects.prefetch_related('buildings', 'spaces', 'altitudeareas',
                                                       'spaces__holes', 'spaces__columns',
                                                       'spaces__obstacles', 'spaces__lineobstacles',