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Description

The python binding layer of coro_rpc_communicator. Refers to #1104

Type of Change

  • Types
    • [ x ] Bug fix
    • New feature
      • Transfer Engine
      • Mooncake Store
      • Mooncake EP
      • Integration
      • P2P Store
      • Python Wheel
    • Breaking change
    • CI/CD
    • Documentation update
    • Other

How Has This Been Tested?

Checklist

  • I have performed a self-review of my own code.
  • I have updated the documentation.
  • I have added tests to prove my changes are effective.

luketong777 and others added 4 commits November 24, 2025 10:50
Transfer Engine Python bindings:
- Add coro_rpc interface integration to transfer_engine_py.cpp
- Support transfer operations with notify mechanism
- Add getNotifies() method for retrieving transfer notifications
- Improve batch transfer sync APIs with notify support

Store Python bindings:
- Add batch_put_from_multi_buffers() for efficient batch operations
- Add batch_get_into_multi_buffers() for batch retrieval
- Enhance setup() with additional configuration options
- Improve error handling and parameter validation

Testing and utilities:
- Add comprehensive test_tensor_api.py test script
- Update mooncake_config.py with new configuration options
- Update CMakeLists.txt for Python integration modules

Note: This PR depends on:
- PR1 (coro_rpc_connector) for transfer_engine_py.cpp
- PR2 (Store enhancements) for store_py.cpp
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Summary of Changes

Hello @JasonZhang517, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly enhances the interoperability of the Mooncake project by integrating Python bindings for the coro_rpc_communicator. This enables Python-based components to seamlessly utilize the existing C++ RPC communication infrastructure, broadening the scope for development and integration within the ecosystem.

Highlights

  • Python Bindings for CoroRPCCommunicator: This pull request introduces a new Python binding layer for the coro_rpc_communicator, allowing Python applications to directly interact with the C++ CoroRPCInterface for remote procedure calls.
  • CMake Build System Updates: The CMake configuration has been updated to correctly build and link the new Python bindings. This includes finding Python3 development components, adding necessary include directories, and conditionally linking against the coro_rpc_connector library.
  • Exposed RPC Functionality: The Python bindings expose a comprehensive set of RPC functionalities, including methods for initializing clients and servers, sending and receiving data and tensors, and setting up asynchronous receive callbacks. This provides a full-featured Pythonic interface to the underlying C++ RPC system.
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Code Review

This pull request introduces Python bindings for the coro_rpc_communicator. The changes primarily involve updating CMakeLists.txt to incorporate the new dependencies and adding the necessary pybind11 wrapper code in transfer_engine_py.cpp. The Python bindings themselves are well-implemented. My review focuses on a couple of areas for improvement in the CMake script to remove redundancy and prevent potential build issues.

Comment on lines +60 to +62
if (TARGET coro_rpc_connector)
target_link_libraries(engine PUBLIC coro_rpc_connector)
endif()
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high

The object files from coro_rpc_connector are included on line 41 via $<TARGET_OBJECTS>. Linking the target again here is either redundant (for static libraries) or an error (for object libraries). Please remove this block to avoid redundancy and potential build failures.

Comment on lines +56 to 58
if (TARGET transfer_engine)
target_link_libraries(engine PUBLIC transfer_engine)
endif()
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medium

The transfer_engine target is already linked to the engine target on line 51. This if block is redundant and can be removed to simplify the script.

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2 participants