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8.3 Wrap full pipeline in lock

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Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Fritiof Hedman
2026-06-07 16:05:02 +02:00
parent e1c35d7423
commit d6ebf89468
3 changed files with 33 additions and 21 deletions
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IMPLEMENTATION.md
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@@ -202,7 +202,7 @@ Each type lives in `src/FrameProcessor/Domain/`. Tests in `tests/FrameProcessor.
- `ConcurrentDictionary<FrameName, SemaphoreSlim>` (each `SemaphoreSlim(1, 1)`).
- `Task<IDisposable> AcquireAsync(FrameName, CancellationToken)` returning a disposable that releases on dispose.
### [ ] 8.3 Wrap full pipeline in lock
### [x] 8.3 Wrap full pipeline in lock
- In `FramesController`, acquire the frame's lock before fetch/decode and release after publish-attempt completes (`CLAUDE.md` "Per-frame serialization").
- **Manual check:** fire two concurrent uploads to the same frame → both return 200, only one PNG on disk reflects whichever finished last, two MQTT publishes (or one if collapsed by retry queue).