A test run could message real subscribers, and would have reported green while
doing it.
Every send gate in notifications/ reads its config from ambient env at import
time, and conftest neutralised none of it -- it set four env vars, none touching
Discord, SMTP or VAPID. test_notify.py calls run_pass() seven times without
patching notifications.discord, and notify.py:358 reaches
discord.post_subscription_alert() for every notification it creates. The
subscription channel notifies real people.
The failure mode is silent: notify.py's send path and discord.py's _bot_post
swallow every exception, so a real send raises nothing and no assertion goes red.
An operator who had sourced /etc/thermograph.env to debug -- routine -- turned
`pytest tests/notifications` into a live broadcast. CI was safe only by omission:
it runs in a container with no credentials baked in, and one added -e removed
that.
Two layers:
1. Config blanked, so every enabled()/dm_enabled()/subscription_enabled() gate
reports False. This is the state CI already runs in, now guaranteed locally
instead of depending on the shell.
2. The transports themselves replaced with sentinels that raise. A test that
forgets to patch one fails loudly rather than sending.
Tests that need to exercise a send path patch these themselves, which is the
point: the escape hatch becomes explicit in the test that takes it. The idiom is
lifted from tests/test_warm_content.py, which already did this for one call.
test_send_safety.py asserts the guarantee, because a block like this fails in
only one direction -- weaken it and every other test still passes, the sole
symptom being a message delivered to somebody.
Full suite: 457 passed, 8 skipped. Nothing relied on a live transport.
The gateway bot and APScheduler were long-lived stateful I/O loops running
inside the async web app under a leader election. They move into a single Go
binary that owns ONLY that I/O -- websocket, RESUME, heartbeat, backoff, timers.
It owns no grading logic. Anything needing data calls back over a new
internal-only surface (/internal/discord/grade, /internal/jobs/*). Grading
depends on polars and the parquet cache; reimplementing it in Go would let the
bot's grades drift from the API's. The grade route returns gateway-ready JSON
and Go relays the bytes verbatim.
The binary ships in the backend image and runs as a second compose service off
the same tag, so the two ends of the /internal/* contract can never skew.
deploy.sh rolls daemon alongside backend -- without that the service would never
be created, since a single-service deploy uses --no-deps. It also probes the
image first and skips the daemon when rolling a tag that predates the binary:
infra tracks main while image tags are env-staged, so a host can legitimately be
asked to roll an older backend image, and creating the service anyway would
leave a container crash-looping on a missing binary.
replicas: 1 with order: stop-first replaces the leader election -- Discord
permits one gateway connection per bot token.
THERMOGRAPH_INTERNAL_TOKEN is optional: both ends derive it from
THERMOGRAPH_AUTH_SECRET via HMAC under a domain-separation label, so this needs
no new vault entry. The derivation is pinned to a shared cross-language test
vector asserted on both sides, so drift fails CI instead of 401ing every call.
Fail closed when neither secret is set.
Improvements over the Python: a close intended for RESUME uses 4000 rather than
1000 (Discord invalidates a session closed 1000, so the old default defeated its
own resume); MESSAGE_CREATE runs on a bounded worker pool; and a malformed HELLO
returns an error rather than a clean reconnect, which would otherwise reset
backoff and hot-loop against the gateway.
365 Python tests pass; Go build/vet/test -race clean; shellcheck 0 findings.
