lib/openwfe/engine/file_persisted_engine.rb in openwferu-0.9.4 vs lib/openwfe/engine/file_persisted_engine.rb in openwferu-0.9.5

@@ -49,18 +49,44 @@
     #
     # An engine persisted to a tree of yaml files
     #
     class FilePersistedEngine < Engine
 
-      #
-      # Overrides the method already found in Engine with a persisted 
-      # expression storage
-      #
-      def build_expression_storage ()
+        protected
 
-          @application_context[:work_directory] = "./work"
+            #
+            # Overrides the method already found in Engine with a persisted 
+            # expression storage
+            #
+            def build_expression_storage ()
 
-          init_service(S_EXPRESSION_STORAGE, YamlFileExpressionStorage)
-      end
-  
+                @application_context[:work_directory] = "./work"
+
+                init_service(S_EXPRESSION_STORAGE, YamlFileExpressionStorage)
+            end
+    end
+
+    #
+    # An engine with a cache in front of its file persisted expression storage.
+    #
+    class CachedFilePersistedEngine < Engine
+
+        protected
+
+            def build_expression_storage ()
+
+                @application_context[:expression_cache_size] = 1000
+                @application_context[:work_directory] = "./work"
+
+                init_service(
+                    S_EXPRESSION_STORAGE, 
+                    CacheExpressionStorage)
+
+                #init_service(
+                #    S_EXPRESSION_STORAGE + ".1",
+                #    YamlFileExpressionStorage)
+                init_service(
+                    S_EXPRESSION_STORAGE + ".1",
+                    ThreadedYamlFileExpressionStorage)
+            end
     end
 end