fixes rails#110 avoid race condition when clearing/using assets cache

gingerlime · Sep 17, 2022 · d5d57f6 · d5d57f6
1 parent 3903815
commit d5d57f6
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/lib/propshaft/load_path.rb b/lib/propshaft/load_path.rb
@@ -6,6 +6,7 @@ class Propshaft::LoadPath
   def initialize(paths = [], version: nil)
     @paths   = dedup(paths)
     @version = version
+    @mutex ||= Mutex.new
   end
 
   def find(asset_name)
@@ -64,7 +65,10 @@ def without_dotfiles(files)
     end
 
     def clear_cache
-      @cached_assets_by_path = nil
+      @mutex.synchronize do
+        @cached_assets_by_path = nil
+        assets_by_path  # seeds the cache
+      end
     end
 
     def dedup(paths)