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AsyncOnlyMiddleware Class — langchain Architecture

Architecture documentation for the AsyncOnlyMiddleware class in test_sync_async_wrappers.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  4b08f19e_ba4b_5969_d3cf_5a5c96c8db00["AsyncOnlyMiddleware"]
  949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e["AgentMiddleware"]
  4b08f19e_ba4b_5969_d3cf_5a5c96c8db00 -->|extends| 949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e
  cf6b674b_7780_33c8_7bab_ae3fff37b276["test_sync_async_wrappers.py"]
  4b08f19e_ba4b_5969_d3cf_5a5c96c8db00 -->|defined in| cf6b674b_7780_33c8_7bab_ae3fff37b276
  f42a5199_3b5b_01a0_d6db_0e1554648695["awrap_tool_call()"]
  4b08f19e_ba4b_5969_d3cf_5a5c96c8db00 -->|method| f42a5199_3b5b_01a0_d6db_0e1554648695

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_sync_async_wrappers.py lines 111–118

        class AsyncOnlyMiddleware(AgentMiddleware):
            async def awrap_tool_call(
                self,
                request: ToolCallRequest,
                handler: Callable[[ToolCallRequest], Awaitable[ToolMessage | Command[Any]]],
            ) -> ToolMessage | Command[Any]:
                call_log.append("async_called")
                return await handler(request)

Defined In

Extends

Source

Frequently Asked Questions

What is the AsyncOnlyMiddleware class?
AsyncOnlyMiddleware is a class in the langchain codebase, defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_sync_async_wrappers.py.
Where is AsyncOnlyMiddleware defined?
AsyncOnlyMiddleware is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_sync_async_wrappers.py at line 111.
What does AsyncOnlyMiddleware extend?
AsyncOnlyMiddleware extends AgentMiddleware.

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