tpv-academysports died on 2026-10-08 06:27 UTC and stayed down: six
identical crashes in 8 minutes (each ~2 min after start), then docker's
on-failure:5 gave up. Every one was
database.py, in calculate_priority
percentage = int(((original_price - current_price) / original_price) * 100)
OverflowError: cannot convert float infinity to integer
A monitor builds prices with float() on the retailer's raw field, and
float() accepts "Infinity" / "1e999", so a non-finite price reaches here.
The `not original_price` guard catches None and 0, not inf or nan, and the
exception escapes add_products_to_database -> run_monitor_cycle and kills
the whole process -- one bad product takes the monitor down, and it
crashes again on every restart while that product is listed. Every
monitor that uses this lib has the same exposure.
calculate_priority now returns 0 (the existing "broken prices" bucket)
for a non-finite current/original price, and for a finite pair whose
ratio still overflows (a subnormal original price). Tests cover both;
they fail on the old code (OverflowError, plus ValueError for nan) and
pass now (tests/test_alert_priority.py: 10 passed).
Not changed: the monitor-side float() parsing, which could reject these
prices before they are stored -- worth a look by the monitor owners.
Co-Authored-By: Claude Code Opus 5.5 (ansible-ops, auto-repair) <noreply@anthropic.com>
Signed-off-by: disqualifier <dev@disqualifier.me>
dsqlandClaude Code Opus 5.5