improve: extract method for safe loading yaml file and avoid using PyYaml's FullLoader (#4031)

api/core/utils/position_helper.py

@@ -1,10 +1,9 @@
-import logging
 import os
 from collections import OrderedDict
 from collections.abc import Callable
 from typing import Any, AnyStr
 
-import yaml
+from core.tools.utils.yaml_utils import load_yaml_file
 
 
 def get_position_map(
@@ -17,21 +16,15 @@ def get_position_map(
     :param file_name: the YAML file name, default to '_position.yaml'
     :return: a dict with name as key and index as value
     """
-    try:
-        position_file_name = os.path.join(folder_path, file_name)
-        if not os.path.exists(position_file_name):
-            return {}
-
-        with open(position_file_name, encoding='utf-8') as f:
-            positions = yaml.safe_load(f)
-        position_map = {}
-        for index, name in enumerate(positions):
-            if name and isinstance(name, str):
-                position_map[name.strip()] = index
-        return position_map
-    except:
-        logging.warning(f'Failed to load the YAML position file {folder_path}/{file_name}.')
-        return {}
+    position_file_name = os.path.join(folder_path, file_name)
+    positions = load_yaml_file(position_file_name, ignore_error=True)
+    position_map = {}
+    index = 0
+    for _, name in enumerate(positions):
+        if name and isinstance(name, str):
+            position_map[name.strip()] = index
+            index += 1
+    return position_map
 
 
 def sort_by_position_map(