🔧 fix(base.py): make Service class inherit from ABC to make it an abstract base class

✨ feat(manager.py): add debug log messages for service creation and update to improve debugging
✨ feat(manager.py): add teardown method to ServiceManager to teardown all services and clear state
✨ feat(manager.py): add teardown_services function to teardown all services and clear state

src/backend/langflow/services/base.py

@@ -1,2 +1,8 @@
-class Service:
+from abc import ABC
+
+
+class Service(ABC):
     name: str
+
+    def teardown(self):
+        pass

src/backend/langflow/services/manager.py

@@ -1,5 +1,6 @@
 from langflow.services.schema import ServiceType
 from typing import TYPE_CHECKING, List, Optional
+from langflow.utils.logger import logger
 
 if TYPE_CHECKING:
     from langflow.services.factory import ServiceFactory
@@ -42,6 +43,7 @@ class ServiceManager:
         """
         Create a new service given its name, handling dependencies.
         """
+        logger.debug(f"Create service {service_name}")
         self._validate_service_creation(service_name)
 
         # Create dependencies first
@@ -74,9 +76,21 @@ class ServiceManager:
         Update a service by its name.
         """
         if service_name in self.services:
+            logger.debug(f"Update service {service_name}")
             self.services.pop(service_name, None)
             self.get(service_name)
 
+    def teardown(self):
+        """
+        Teardown all the services.
+        """
+        for service in self.services.values():
+            logger.debug(f"Teardown service {service.name}")
+            service.teardown()
+        self.services = {}
+        self.factories = {}
+        self.dependencies = {}
+
 
 service_manager = ServiceManager()
 
@@ -134,3 +148,10 @@ def initialize_session_manager():
         session_manager_factory.SessionManagerFactory(),
         dependencies=[ServiceType.CACHE_MANAGER],
     )
+
+
+def teardown_services():
+    """
+    Teardown all the services.
+    """
+    service_manager.teardown()