code: def construct_url(ip, port, action):
      return "https://" + ip + ":" + port + "/ehsm?Action=" + action
  
file_path: BigDL/python/ppml/src/bigdl/ppml/kms/ehsm/caller.py
imports: import requests
  import json
  import base64
  import time
  import random
  import hmac
  from hashlib import sha256
  import os
  from collections import OrderedDict
  import urllib.parse
  from requests.packages import urllib3
label_desc: Use image node_id 2 for calling a global function with example usage: construct_url(ip, port, action) and returns: unknown