OuterMiddleware Class — langchain Architecture

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

Class python

Entity Profile

Dependency Diagram

graph TD
  7f0c5b7c_bf29_cebc_d944_b1a8e4e5cf7f["OuterMiddleware"]
  949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e["AgentMiddleware"]
  7f0c5b7c_bf29_cebc_d944_b1a8e4e5cf7f -->|extends| 949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e
  573473e5_eb93_a7d7_84ba_c975071c09af["test_wrap_model_call.py"]
  7f0c5b7c_bf29_cebc_d944_b1a8e4e5cf7f -->|defined in| 573473e5_eb93_a7d7_84ba_c975071c09af
  2b2f7483_a276_f35b_45c4_2977eeaeb887["wrap_model_call()"]
  7f0c5b7c_bf29_cebc_d944_b1a8e4e5cf7f -->|method| 2b2f7483_a276_f35b_45c4_2977eeaeb887

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py lines 685–694

        class OuterMiddleware(AgentMiddleware):
            def wrap_model_call(
                self,
                request: ModelRequest,
                handler: Callable[[ModelRequest], ModelResponse],
            ) -> ModelCallResult:
                execution_order.append("outer-before")
                response = handler(request)
                execution_order.append("outer-after")
                return response