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ErrorToSuccessMiddleware Class — langchain Architecture

Architecture documentation for the ErrorToSuccessMiddleware class in test_wrap_model_call.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  010e1b9c_0e22_2686_194b_f9a14a76d762["ErrorToSuccessMiddleware"]
  949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e["AgentMiddleware"]
  010e1b9c_0e22_2686_194b_f9a14a76d762 -->|extends| 949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e
  573473e5_eb93_a7d7_84ba_c975071c09af["test_wrap_model_call.py"]
  010e1b9c_0e22_2686_194b_f9a14a76d762 -->|defined in| 573473e5_eb93_a7d7_84ba_c975071c09af
  69942d8b_ab12_cfb3_d81c_76dac03ebbc4["wrap_model_call()"]
  010e1b9c_0e22_2686_194b_f9a14a76d762 -->|method| 69942d8b_ab12_cfb3_d81c_76dac03ebbc4

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py lines 392–401

        class ErrorToSuccessMiddleware(AgentMiddleware):
            def wrap_model_call(
                self,
                request: ModelRequest,
                handler: Callable[[ModelRequest], ModelResponse],
            ) -> ModelCallResult:
                try:
                    return handler(request)
                except Exception as e:
                    return AIMessage(content=f"Error occurred: {e}. Using fallback response.")

Defined In

Extends

Source

Frequently Asked Questions

What is the ErrorToSuccessMiddleware class?
ErrorToSuccessMiddleware is a class in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py.
Where is ErrorToSuccessMiddleware defined?
ErrorToSuccessMiddleware is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py at line 392.
What does ErrorToSuccessMiddleware extend?
ErrorToSuccessMiddleware extends AgentMiddleware.

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