ClassMiddleware Class — langchain Architecture

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

Class python

Entity Profile

Dependency Diagram

graph TD
  63ac2857_211f_dc42_8a75_bedde25a699e["ClassMiddleware"]
  949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e["AgentMiddleware"]
  63ac2857_211f_dc42_8a75_bedde25a699e -->|extends| 949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e
  573473e5_eb93_a7d7_84ba_c975071c09af["test_wrap_model_call.py"]
  63ac2857_211f_dc42_8a75_bedde25a699e -->|defined in| 573473e5_eb93_a7d7_84ba_c975071c09af
  4851565c_3052_592a_2c69_6b890ec7735a["wrap_model_call()"]
  63ac2857_211f_dc42_8a75_bedde25a699e -->|method| 4851565c_3052_592a_2c69_6b890ec7735a

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_wrap_model_call.py lines 1276–1285

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