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db/manager.py

@@ -73,5 +73,9 @@ class DbManager(object):
             return item.get('version')
         return None
 
+    def aggregate(self, col_name: str, pipelines, **kwargs):
+        col = self.db[col_name]
+        return col.aggregate(pipelines, **kwargs)
+
 
 db_manager = DbManager()