RequestCapturingMiddleware Class — langchain Architecture

Architecture documentation for the RequestCapturingMiddleware class in test_tools.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  6825b79a_df6c_e1b8_5aa6_84b355cdf85e["RequestCapturingMiddleware"]
  949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e["AgentMiddleware"]
  6825b79a_df6c_e1b8_5aa6_84b355cdf85e -->|extends| 949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e
  5e05f5a6_3c9a_6b02_08a5_596bf1a6469a["test_tools.py"]
  6825b79a_df6c_e1b8_5aa6_84b355cdf85e -->|defined in| 5e05f5a6_3c9a_6b02_08a5_596bf1a6469a
  eedf5db3_ad76_c1b4_2d58_1aa55d82be43["wrap_model_call()"]
  6825b79a_df6c_e1b8_5aa6_84b355cdf85e -->|method| eedf5db3_ad76_c1b4_2d58_1aa55d82be43

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_tools.py lines 37–44

    class RequestCapturingMiddleware(AgentMiddleware):
        def wrap_model_call(
            self,
            request: ModelRequest,
            handler: Callable[[ModelRequest], ModelResponse],
        ) -> ModelCallResult:
            captured_requests.append(request)
            return handler(request)