app/services/enrichment/barcode/retry.py imports tenacity at module scope,
and that module is on app/main.py's import path (main -> store_catalog router
-> store_catalog_pipeline -> barcode enrichment -> sources -> retry). tenacity
was in no requirements file, so the deployed image exited 1 during startup:
File "/app/app/main.py", line 33, in <module>
from app.api.routers import store_catalog
...
File "/app/app/services/enrichment/barcode/retry.py", line 16
from tenacity import (
ModuleNotFoundError: No module named 'tenacity'
This surfaced as "100% CPU", not as a crash, which is why it was mis-read.
uvicorn never bound a socket, Swarm restarted the task, and each restart
re-ran the ~21s of eager pandas/scipy/sklearn imports that the analytics,
recommendations and nutrition routers pull in at module scope. On this
1-vCPU host that loop pins the only core indefinitely.
retry.py's own docstring asserted tenacity was "already a project dependency
(see requirements.txt)". It never was - corrected to say the opposite, and to
record that it is a hard startup dependency rather than an optional extra.
Verified on the deployed image, not just locally: with tenacity present the
container reaches health=healthy with restarts=0, and /, /api/health,
/api/brands, /api/system/status and /docs all return 200. Idle cost is
0.16% CPU / 168MiB. An AST scan of every import in app/, cli/, scripts/ and
serve.py against the image finds no other missing module (playwright is the
one remaining absence and is deliberate - commented out in requirements.txt
and imported lazily inside a function).
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01N7bVBpxH4AbJtK7Kp3MzDR
