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SelectiveErrorMiddleware Class — langchain Architecture

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

Class python

Entity Profile

Dependency Diagram

graph TD
  1bade402_603b_2e38_9a0c_e3135318b449["SelectiveErrorMiddleware"]
  949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e["AgentMiddleware"]
  1bade402_603b_2e38_9a0c_e3135318b449 -->|extends| 949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e
  573473e5_eb93_a7d7_84ba_c975071c09af["test_wrap_model_call.py"]
  1bade402_603b_2e38_9a0c_e3135318b449 -->|defined in| 573473e5_eb93_a7d7_84ba_c975071c09af
  e7461725_4bcd_a3c9_2135_d0cb05d4647a["wrap_model_call()"]
  1bade402_603b_2e38_9a0c_e3135318b449 -->|method| e7461725_4bcd_a3c9_2135_d0cb05d4647a

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py lines 427–436

        class SelectiveErrorMiddleware(AgentMiddleware):
            def wrap_model_call(
                self,
                request: ModelRequest,
                handler: Callable[[ModelRequest], ModelResponse],
            ) -> ModelCallResult:
                try:
                    return handler(request)
                except ConnectionError:
                    return AIMessage(content="Network issue, try again later")

Defined In

Extends

Source

Frequently Asked Questions

What is the SelectiveErrorMiddleware class?
SelectiveErrorMiddleware 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 SelectiveErrorMiddleware defined?
SelectiveErrorMiddleware is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py at line 427.
What does SelectiveErrorMiddleware extend?
SelectiveErrorMiddleware extends AgentMiddleware.

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