[Chore/Refactor] Use centralized naive_utc_now for UTC datetime operations (#24352)

Signed-off-by: -LAN- <laipz8200@outlook.com>

api/tasks/retry_document_indexing_task.py

@@ -1,4 +1,3 @@
-import datetime
 import logging
 import time
 
@@ -9,6 +8,7 @@ from core.indexing_runner import IndexingRunner
 from core.rag.index_processor.index_processor_factory import IndexProcessorFactory
 from extensions.ext_database import db
 from extensions.ext_redis import redis_client
+from libs.datetime_utils import naive_utc_now
 from models.dataset import Dataset, Document, DocumentSegment
 from services.feature_service import FeatureService
 
@@ -51,7 +51,7 @@ def retry_document_indexing_task(dataset_id: str, document_ids: list[str]):
                 if document:
                     document.indexing_status = "error"
                     document.error = str(e)
-                    document.stopped_at = datetime.datetime.now(datetime.UTC).replace(tzinfo=None)
+                    document.stopped_at = naive_utc_now()
                     db.session.add(document)
                     db.session.commit()
                 redis_client.delete(retry_indexing_cache_key)
@@ -79,7 +79,7 @@ def retry_document_indexing_task(dataset_id: str, document_ids: list[str]):
                 db.session.commit()
 
                 document.indexing_status = "parsing"
-                document.processing_started_at = datetime.datetime.now(datetime.UTC).replace(tzinfo=None)
+                document.processing_started_at = naive_utc_now()
                 db.session.add(document)
                 db.session.commit()
 
@@ -89,7 +89,7 @@ def retry_document_indexing_task(dataset_id: str, document_ids: list[str]):
             except Exception as ex:
                 document.indexing_status = "error"
                 document.error = str(ex)
-                document.stopped_at = datetime.datetime.now(datetime.UTC).replace(tzinfo=None)
+                document.stopped_at = naive_utc_now()
                 db.session.add(document)
                 db.session.commit()
                 logging.info(click.style(str(ex), fg="yellow"))