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BothSyncAsyncMiddleware Class — langchain Architecture

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

Class python

Entity Profile

Dependency Diagram

graph TD
  12c255c9_9bfa_8c4e_6f28_718fcd84aaa3["BothSyncAsyncMiddleware"]
  949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e["AgentMiddleware"]
  12c255c9_9bfa_8c4e_6f28_718fcd84aaa3 -->|extends| 949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e
  cf6b674b_7780_33c8_7bab_ae3fff37b276["test_sync_async_wrappers.py"]
  12c255c9_9bfa_8c4e_6f28_718fcd84aaa3 -->|defined in| cf6b674b_7780_33c8_7bab_ae3fff37b276
  b32ae1d3_dc67_5e65_9233_c87c7775379d["wrap_tool_call()"]
  12c255c9_9bfa_8c4e_6f28_718fcd84aaa3 -->|method| b32ae1d3_dc67_5e65_9233_c87c7775379d
  83212f91_58cd_0efb_7c70_b1044be4f13c["awrap_tool_call()"]
  12c255c9_9bfa_8c4e_6f28_718fcd84aaa3 -->|method| 83212f91_58cd_0efb_7c70_b1044be4f13c

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_sync_async_wrappers.py lines 179–194

        class BothSyncAsyncMiddleware(AgentMiddleware):
            def wrap_tool_call(
                self,
                request: ToolCallRequest,
                handler: Callable[[ToolCallRequest], ToolMessage | Command[Any]],
            ) -> ToolMessage | Command[Any]:
                call_log.append("sync_called")
                return handler(request)

            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 BothSyncAsyncMiddleware class?
BothSyncAsyncMiddleware 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 BothSyncAsyncMiddleware defined?
BothSyncAsyncMiddleware is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_sync_async_wrappers.py at line 179.
What does BothSyncAsyncMiddleware extend?
BothSyncAsyncMiddleware extends AgentMiddleware.

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