Created uuidgen_t() to replace call to external command

pilot/util/auxiliary.py

@@ -33,6 +33,7 @@
 from numbers import Number
 from time import sleep
 from typing import Any
+from uuid import uuid4
 
 from pilot.util.constants import (
     SUCCESS,
@@ -802,3 +803,12 @@ def is_kubernetes_resource() -> bool:
         return True
     else:
         return False
+
+
+def uuidgen_t() -> str:
+    """
+    Generate a UUID string in the same format as "uuidgen -t".
+
+    :return: A UUID in the format "00000000-0000-0000-0000-000000000000" (str).
+    """
+    return str(uuid4())

pilot/util/tracereport.py

@@ -18,21 +18,25 @@
 # Authors:
 # - Alexey Anisenkov, [email protected], 2017
 # - Pavlo Svirin, [email protected], 2018
-# - Paul Nilsson, [email protected], 2018-23
+# - Paul Nilsson, [email protected], 2018-24
 
 import hashlib
 import os
 import socket
 import time
+
 from sys import exc_info
 from json import dumps, loads
 from os import environ, getuid
 
 from pilot.common.exception import FileHandlingFailure
-from pilot.util.auxiliary import correct_none_types
+from pilot.util.auxiliary import (
+    correct_none_types,
+    uuidgen_t
+)
 from pilot.util.config import config
 from pilot.util.constants import get_pilot_version, get_rucio_client_version
-from pilot.util.container import execute, execute2
+from pilot.util.container import execute2
 from pilot.util.filehandling import append_to_file, write_file
 from pilot.util.https import request2
 
@@ -130,10 +134,8 @@ def init(self, job):
             s = 'ppilot_%s' % job.jobdefinitionid
             self['uuid'] = hashlib.md5(s.encode('utf-8')).hexdigest()  # hash_pilotid, Python 2/3
         else:
-            #self['uuid'] = commands.getoutput('uuidgen -t 2> /dev/null').replace('-', '')  # all LFNs of one request have the same uuid
-            cmd = 'uuidgen -t 2> /dev/null'
-            exit_code, stdout, stderr = execute(cmd, timeout=10)
-            self['uuid'] = stdout.replace('-', '')
+            _uuid = uuidgen_t()  # 'uuidgen -t 2> /dev/null'
+            self['uuid'] = _uuid.replace('-', '')
 
     def get_value(self, key):
         """