Add map_function to get_history. (Comfy-Org#9056)

Author: comfyanonymous

execution.py

@@ -1097,7 +1097,7 @@ def delete_queue_item(self, function):
                     return True
         return False
 
-    def get_history(self, prompt_id=None, max_items=None, offset=-1):
+    def get_history(self, prompt_id=None, max_items=None, offset=-1, map_function=None):
         with self.mutex:
             if prompt_id is None:
                 out = {}
@@ -1106,13 +1106,21 @@ def get_history(self, prompt_id=None, max_items=None, offset=-1):
                     offset = len(self.history) - max_items
                 for k in self.history:
                     if i >= offset:
-                        out[k] = self.history[k]
+                        p = self.history[k]
+                        if map_function is not None:
+                            p = map_function(p)
+                        out[k] = p
                         if max_items is not None and len(out) >= max_items:
                             break
                     i += 1
                 return out
             elif prompt_id in self.history:
-                return {prompt_id: copy.deepcopy(self.history[prompt_id])}
+                p = self.history[prompt_id]
+                if map_function is None:
+                    p = copy.deepcopy(p)
+                else:
+                    p = map_function(p)
+                return {prompt_id: p}
             else:
                 return {}