Task 21: PublishService.processPhoto streams the original from storage,
runs the sharp pipeline, puts thumb/browse variants under
photo-live/dev/albums/{albumId}/variants/{photoId}/1/, then commits ONE
Prisma transaction: photo_variants upserts (thumb+browse), a conditional
photos update WHERE processingState IN (uploaded, processing_failed) that
flips to ready+published, stamps publishedAt/width/height, clears
errorCode and bumps entityVersion, and the outbox_events row
(photo.published, payload = contracts PhotoPublishedPayload with the
post-increment entityVersion). A zero-row conditional update means a
concurrent winner already published -> idempotent 'already' with no
second event and no extra version bump. The BullMQ worker wrapper
(QUEUE_PHOTO_PROCESS, concurrency 2, jobId 'process-{photoId}' without
the reserved ':') claims photo_jobs pending->active (attempt++), marks
done for published/already/skipped alike, and rethrows pipeline/storage
errors for the producer-configured 3-attempt exponential backoff; the
final attempt (BullMQ increments attemptsMade only after
moveToFinished, so in-processor it is 0-based: current = attemptsMade+1)
marks photo_jobs failed + photo processing_failed with the
PipelineError code while visibility stays unpublished. sweepOnce()
claims due pending rows (nextRetryAt IS NULL OR < now) and re-enqueues
stale (>5min) active rows with jobId dedupe; startSweepInterval(30s)
boot-scans then loops, and main.ts wires pino logging, dedicated redis
connections and graceful SIGINT/SIGTERM shutdown.
Co-Authored-By: Claude Code <noreply@anthropic.com>
Task 20: services/worker package (@photo/worker, commonjs) with jest
unit/e2e configs mirroring api conventions (root .env via test/load-env.ts,
moduleNameMapper to @photo/contracts/db-cn/storage TS sources, maxWorkers 1,
test/reset.ts = MySQL TRUNCATE + MinIO photo-live/dev prefix wipe) and the
sharp processing pipeline runPipeline(): metadata whitelist gate
(jpeg/png/webp/avif/heif/tiff, else PipelineError UNSUPPORTED_TYPE),
decode failures mapped to PipelineError DECODE_FAILED, no-arg .rotate()
auto-orientation (EXIF 5-8 swaps stored width/height), thumb <=480w q75
and browse <=1920 q82 JPEG variants with withoutEnlargement, and no
withMetadata so outputs carry no EXIF/GPS at all. sharp 0.35 prebuilt
loads script-free under pnpm 10; its win32 libvips lacks a HEVC encoder,
so the HEVC-HEIF unit case self-skips with a console note (G2 verifies
with real iPhone samples) while the AV1-HEIF case covers the same
libheif decode path / 'heif' format bucket.
Co-Authored-By: Claude Code <noreply@anthropic.com>
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