fix(dataset): remove extra Session in _update_external_knowledge_binding (#22263)

api/services/dataset_service.py

@@ -10,7 +10,6 @@ from typing import Any, Optional
 
 from flask_login import current_user
 from sqlalchemy import func, select
-from sqlalchemy.orm import Session
 from werkzeug.exceptions import NotFound
 
 from configs import dify_config
@@ -384,9 +383,8 @@ class DatasetService:
             external_knowledge_id: External knowledge identifier
             external_knowledge_api_id: External knowledge API identifier
         """
-        with Session(db.engine) as session:
         external_knowledge_binding = (
-                session.query(ExternalKnowledgeBindings).filter_by(dataset_id=dataset_id).first()
+            db.session.query(ExternalKnowledgeBindings).filter_by(dataset_id=dataset_id).first()
         )
 
         if not external_knowledge_binding:
@@ -399,7 +397,6 @@ class DatasetService:
         ):
             external_knowledge_binding.external_knowledge_id = external_knowledge_id
             external_knowledge_binding.external_knowledge_api_id = external_knowledge_api_id
-            db.session.add(external_knowledge_binding)
 
     @staticmethod
     def _update_internal_dataset(dataset, data, user):

api/tests/unit_tests/services/test_dataset_service_update_dataset.py

@@ -119,7 +119,7 @@ class TestDatasetServiceUpdateDataset:
     @pytest.fixture
     def mock_external_provider_dependencies(self):
         """Mock setup for external provider tests."""
-        with patch("services.dataset_service.Session") as mock_session:
+        with patch("sqlalchemy.orm.Session") as mock_session:
             from extensions.ext_database import db
 
             with patch.object(db.__class__, "engine", new_callable=Mock):