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SyncOnlyMiddleware Class — langchain Architecture

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

Class python

Entity Profile

Dependency Diagram

graph TD
  a63452cc_7237_9847_c5e9_9f223812d05a["SyncOnlyMiddleware"]
  949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e["AgentMiddleware"]
  a63452cc_7237_9847_c5e9_9f223812d05a -->|extends| 949c7cf4_56fe_f3b4_cd89_9631a7e9cb1e
  cf6b674b_7780_33c8_7bab_ae3fff37b276["test_sync_async_wrappers.py"]
  a63452cc_7237_9847_c5e9_9f223812d05a -->|defined in| cf6b674b_7780_33c8_7bab_ae3fff37b276
  2a7a396d_560d_b909_7682_09221ed97fc7["wrap_tool_call()"]
  a63452cc_7237_9847_c5e9_9f223812d05a -->|method| 2a7a396d_560d_b909_7682_09221ed97fc7

Relationship Graph

Source Code

libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_sync_async_wrappers.py lines 42–49

        class SyncOnlyMiddleware(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)

Defined In

Extends

Source

Frequently Asked Questions

What is the SyncOnlyMiddleware class?
SyncOnlyMiddleware 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 SyncOnlyMiddleware defined?
SyncOnlyMiddleware is defined in libs/langchain_v1/tests/unit_tests/agents/middleware/core/test_sync_async_wrappers.py at line 42.
What does SyncOnlyMiddleware extend?
SyncOnlyMiddleware extends AgentMiddleware.

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