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OldStyleModelResponseMiddleware Class — langchain Architecture

Architecture documentation for the OldStyleModelResponseMiddleware class in test_middleware_backwards_compat.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  b890c300_3eaf_e736_a140_425f44ccaf2c["OldStyleModelResponseMiddleware"]
  949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e["AgentMiddleware"]
  b890c300_3eaf_e736_a140_425f44ccaf2c -->|extends| 949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e
  74d2d22f_07ae_c5bb_33c3_7da58e2da5a0["test_middleware_backwards_compat.py"]
  b890c300_3eaf_e736_a140_425f44ccaf2c -->|defined in| 74d2d22f_07ae_c5bb_33c3_7da58e2da5a0
  f228b95f_2804_46b9_366c_ed266fcb02eb["wrap_model_call()"]
  b890c300_3eaf_e736_a140_425f44ccaf2c -->|method| f228b95f_2804_46b9_366c_ed266fcb02eb

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_backwards_compat.py lines 129–142

class OldStyleModelResponseMiddleware(AgentMiddleware):
    """Middleware using ModelResponse without type param."""

    def wrap_model_call(
        self,
        request: ModelRequest,
        handler: Callable[[ModelRequest], ModelResponse],
    ) -> ModelResponse:
        response = handler(request)
        # Access result - this always worked
        _ = response.result
        # structured_response was Any before, still works
        _ = response.structured_response
        return response

Defined In

Extends

Source

Frequently Asked Questions

What is the OldStyleModelResponseMiddleware class?
OldStyleModelResponseMiddleware is a class in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_backwards_compat.py.
Where is OldStyleModelResponseMiddleware defined?
OldStyleModelResponseMiddleware is defined in libs/langchain_v1/tests/unit_tests/agents/middleware_typing/test_middleware_backwards_compat.py at line 129.
What does OldStyleModelResponseMiddleware extend?
OldStyleModelResponseMiddleware extends AgentMiddleware.

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