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WrongContextFieldsMiddleware Class — langchain Architecture

Architecture documentation for the WrongContextFieldsMiddleware class in test_middleware_type_errors.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  cd915064_674a_f1fd_e3d9_9dbf083a9386["WrongContextFieldsMiddleware"]
  47e0e3d7_cac1_0ec3_228a_0fd46437bc22["test_middleware_type_errors.py"]
  cd915064_674a_f1fd_e3d9_9dbf083a9386 -->|defined in| 47e0e3d7_cac1_0ec3_228a_0fd46437bc22
  6d584374_ec0d_bc15_6904_0eed21eee432["wrap_model_call()"]
  cd915064_674a_f1fd_e3d9_9dbf083a9386 -->|method| 6d584374_ec0d_bc15_6904_0eed21eee432

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_type_errors.py lines 61–70

class WrongContextFieldsMiddleware(AgentMiddleware[AgentState[Any], UserContext, Any]):
    def wrap_model_call(
        self,
        request: ModelRequest[UserContext],
        handler: Callable[[ModelRequest[UserContext]], ModelResponse[Any]],
    ) -> ModelResponse[Any]:
        # TYPE ERROR: 'session_id' doesn't exist on UserContext
        session_id: str = request.runtime.context["session_id"]  # type: ignore[typeddict-item]
        _ = session_id
        return handler(request)

Defined In

Source

Frequently Asked Questions

What is the WrongContextFieldsMiddleware class?
WrongContextFieldsMiddleware is a class in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_type_errors.py.
Where is WrongContextFieldsMiddleware defined?
WrongContextFieldsMiddleware is defined in libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_type_errors.py at line 61.

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