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finalize context correctly for stream requests#1873

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sawka merged 1 commit intomainfrom
sawka/rpc-finalize
Jan 29, 2025
Merged

finalize context correctly for stream requests#1873
sawka merged 1 commit intomainfrom
sawka/rpc-finalize

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@sawka sawka commented Jan 29, 2025

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Walkthrough

The pull request introduces significant changes to the RPC (Remote Procedure Call) handling mechanism in the pkg/wshutil/wshrpc.go file. The modifications primarily focus on restructuring how RPC requests are managed by shifting from a context-based approach to a handler-based approach.

The key transformation involves replacing the Ctx field in the rpcData structure with a Handler field of type *RpcRequestHandler. This change alters the method signatures and internal logic of RPC-related methods, such as registerRpc and unregisterRpc. The new design encapsulates context management within the RpcRequestHandler, providing a more modular and organized way of handling RPC request lifecycles.

The changes aim to improve the structure of RPC request handling by centralizing context management and request handling logic within a dedicated handler class.

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Reviewing files that changed from the base of the PR and between 8bf6755 and cb593c3.

📒 Files selected for processing (1)
  • pkg/wshutil/wshrpc.go (5 hunks)
⏰ Context from checks skipped due to timeout of 90000ms (3)
  • GitHub Check: Analyze (javascript-typescript)
  • GitHub Check: Analyze (go)
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🔇 Additional comments (9)
pkg/wshutil/wshrpc.go (9)

189-189: Validate potential memory retention.
Replacing the context field in rpcData with a pointer to RpcRequestHandler aligns with the new design. Ensure that this reference does not unintentionally prolong the lifetime of the handler once the RPC completes.

408-408: Refactor from context to request handler is consistent with new design.
This function signature update properly centralizes request handling logic within the RpcRequestHandler.

413-413: Ensure consistent assignment of handler.
Storing the RpcRequestHandler instance into the rpcData struct clarifies ownership. No immediate issues are seen, but verify concurrency safety for rpcData usage.

422-422: Confirm context cancellation behavior in separate goroutine.
Waiting for handler.ctx.Done() in a goroutine is correct but ensure that no race conditions emerge if the RPC is unregistered or canceled beforehand.

450-450: Double-check concurrency with rd.Handler.callContextCancelFn().
Calling callContextCancelFn() on the handler ensures the request context is canceled. Confirm that rd.Handler cannot be nil and that multiple cancellations are safely handled.

545-545: Idempotent finalize approach.
Calling handler.callContextCancelFn() during finalization is correct. The design ensures cancel only runs once, preventing inconsistent states.

551-556: Commendable atomic swap usage.
This method cleanly ensures that the context cancel function is invoked only once, preventing double cancellations. Great use of atomic operations.

557-557: No functional change.
This line appears to be a blank or spacing alteration with no effect.

717-717: Handler-based registration aligns with revised design.
Using handler instead of a raw context during request registration further consolidates RPC-specific logic.

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@sawka sawka merged commit 5db84e5 into main Jan 29, 2025
8 checks passed
@sawka sawka deleted the sawka/rpc-finalize branch January 29, 2025 23:15
xxyy2024 pushed a commit to xxyy2024/waveterm_aipy that referenced this pull request Jun 24, 2025
@sawka
finalize context correctly for stream requests (wavetermdev#1873)
567c6f9
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