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@tus/server: don't use AbortSignal.any to fix memory leak #718

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merged 2 commits into from
Feb 7, 2025

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Closes #717
Closes #716

@Murderlon Murderlon self-assigned this Feb 7, 2025
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changeset-bot bot commented Feb 7, 2025

🦋 Changeset detected

Latest commit: e0526c6

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package
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@tus/server Patch

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coderabbitai bot commented Feb 7, 2025

Walkthrough

This update patches the @tus/server package and refactors the MemoryLocker class to avoid using AbortSignal.any. The changes remove the problematic abortSignal logic and replace it with an abortController along with a new onAbort event listener. Additionally, the dependency has been updated via the changeset file, ensuring that the fix mitigates memory leaks in older Node.js versions without raising the minimum required Node.js version.

Changes

File(s) Change Summary
.changeset/…/silver-students-invent.md Updated dependency for @tus/server patch; advisory to avoid using AbortSignal.any to mitigate memory leak issues.
packages/…/MemoryLocker.ts Refactored lock method: replaced AbortSignal.any with abortController.signal, introduced onAbort event listener, and ensured proper cleanup of the listener in a finally block.

Assessment against linked issues

Objective Addressed Explanation
Prevent memory leak from AbortSignal.any usage [#717]
Ensure correct Node.js version requirement by avoiding AbortSignal.any [#716]
✨ Finishing Touches
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Actionable comments posted: 0

🧹 Nitpick comments (1)
packages/server/src/lockers/MemoryLocker.ts (1)

52-63: LGTM! Consider enhancing error handling.

The new implementation properly handles abort signals and ensures cleanup. However, consider adding explicit error handling for the Promise.race to distinguish between timeout and other potential failures.

 const lock = await Promise.race([
   this.waitTimeout(abortController.signal),
   this.acquireLock(this.id, requestRelease, abortController.signal),
-])
+]).catch(error => {
+  if (error === ERRORS.ERR_LOCK_TIMEOUT) {
+    throw error;
+  }
+  throw new Error(`Failed to acquire lock: ${error.message}`);
+});
📜 Review details

Configuration used: .coderabbit.yml
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📥 Commits

Reviewing files that changed from the base of the PR and between cb52d7f and e0526c6.

📒 Files selected for processing (2)
  • .changeset/silver-students-invent.md (1 hunks)
  • packages/server/src/lockers/MemoryLocker.ts (1 hunks)
✅ Files skipped from review due to trivial changes (1)
  • .changeset/silver-students-invent.md
🔇 Additional comments (2)
packages/server/src/lockers/MemoryLocker.ts (2)

68-71: Excellent cleanup implementation!

The cleanup in the finally block ensures proper resource management by:

  1. Removing the event listener
  2. Aborting the controller
    This prevents memory leaks and ensures resources are released even if errors occur.

53-57: Successfully addresses memory leak concerns.

The implementation avoids AbortSignal.any by using a single AbortController and proper event listener management, effectively addressing the memory leak issue mentioned in the PR objectives.

Let's verify that AbortSignal.any is not used anywhere else in the codebase:

✅ Verification successful

🏁 Script executed:

#!/bin/bash
# Search for any remaining usage of AbortSignal.any
rg -l "AbortSignal\.any"

Length of output: 26


I'll re-run the search using a more precise command to verify that no usage of AbortSignal.any exists in the repository:


🏁 Script executed:

#!/bin/bash
# Search for any occurrence of AbortSignal followed by '.any'
rg -n "AbortSignal" | grep -E "\.any"

Length of output: 37


Memory leak fix verified.
The repository does not contain any usage of AbortSignal.any, and the changes in MemoryLocker.ts correctly prevent potential leaks by using a single AbortController with proper event listener cleanup.

@Murderlon Murderlon merged commit 06954ac into main Feb 7, 2025
4 checks passed
@Murderlon Murderlon deleted the abortsignal.any branch February 7, 2025 09:22
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@tus/server leaks memory @tus/server: required node version is incorrect
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