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ErrorRecoveryMiddleware Class — langchain Architecture

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

Class python

Entity Profile

Dependency Diagram

graph TD
  f2e8da69_53c3_824d_4e05_4a81217355da["ErrorRecoveryMiddleware"]
  949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e["AgentMiddleware"]
  f2e8da69_53c3_824d_4e05_4a81217355da -->|extends| 949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e
  573473e5_eb93_a7d7_84ba_c975071c09af["test_wrap_model_call.py"]
  f2e8da69_53c3_824d_4e05_4a81217355da -->|defined in| 573473e5_eb93_a7d7_84ba_c975071c09af
  37a3dbea_414b_e7dd_ebd5_d23e64e34dd3["wrap_model_call()"]
  f2e8da69_53c3_824d_4e05_4a81217355da -->|method| 37a3dbea_414b_e7dd_ebd5_d23e64e34dd3

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py lines 449–462

        class ErrorRecoveryMiddleware(AgentMiddleware):
            def wrap_model_call(
                self,
                request: ModelRequest,
                handler: Callable[[ModelRequest], ModelResponse],
            ) -> ModelCallResult:
                try:
                    call_log.append("before-yield")
                    result = handler(request)
                    call_log.append("after-yield-success")
                except Exception:
                    call_log.append("caught-error")
                    return AIMessage(content="Recovered from error")
                return result

Defined In

Extends

Source

Frequently Asked Questions

What is the ErrorRecoveryMiddleware class?
ErrorRecoveryMiddleware 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 ErrorRecoveryMiddleware defined?
ErrorRecoveryMiddleware is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py at line 449.
What does ErrorRecoveryMiddleware extend?
ErrorRecoveryMiddleware extends AgentMiddleware.

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