Files
plm-lottery/Caddyfile
T
davideandClaude Sonnet 5 f229f91632 Add server-push (SSE) notifications for round/bet/balance state changes
Frontend dashboards previously found out about state changes only on their
next poll tick (up to 15s, or 3s during a draw) — this adds a push channel
so updates land as soon as they happen instead.

- app/rounds/events.py: a small in-process pub/sub (RoundEventBroadcaster).
  The message carries no payload — it's just a "something changed, go
  refetch" signal, so it needs no auth and no knowledge of who's allowed to
  see what; personalization stays entirely in the existing REST endpoints.
- GET /rounds/stream: an SSE endpoint exposing that channel, with keep-alive
  comments so it survives idle periods behind a reverse proxy, and a
  defensive MAX_SUBSCRIBERS cap (well above the ~100 concurrent users
  expected) — past it, the endpoint returns 503 instead of opening a stream,
  and callers just keep working off polling.
- publish() calls added at every point that actually changes what a
  dashboard would want to know: new round opened, round status transitions
  (closing/drawing/paying_out/closed), a bet or withdrawal broadcast, any
  pending tx confirming (bet/withdrawal/payout), a deposit credited, and a
  new block tip arriving (the exact moment the "drawing" phase is waiting on).
- Caddyfile: excludes /rounds/stream from gzip encoding, since compression
  would buffer output and defeat the point of a live stream.

Single-process only by design for now (no cross-worker fan-out) and the
notification is a generic broadcast rather than a per-user channel — both
are deliberate scope decisions for the current ~100-user, single-container
deployment, not oversights. Polling is left fully in place as a fallback;
this is purely additive.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-23 10:52:07 +02:00

18 lines
775 B
Caddyfile

# SITE_ADDRESS is the domain to serve (e.g. lottery.example.com) — Caddy
# automatically requests a Let's Encrypt certificate for it.
#
# Left at the default "localhost" (dev mode, no domain), Caddy detects it's
# not a public hostname and issues a locally-trusted self-signed certificate
# instead, via its internal CA. Browsers will still warn on first visit
# unless that CA is explicitly trusted — expected for local/dev use.
{$SITE_ADDRESS:localhost} {
# gzip buffers output, which would delay delivery on the SSE stream
# (/rounds/stream, app/api/routes/rounds.py) — it needs each event flushed
# to the client immediately, not batched. Everything else still compresses.
@not_sse {
not path /rounds/stream
}
encode @not_sse gzip
reverse_proxy app:8123
}