Files
scrabble-game/backend/internal/notify/events.go
T
Ilia Denisov 408da3f201
Tests · Go / test (push) Successful in 8s
Tests · Integration / integration (push) Successful in 11s
Tests · Go / test (pull_request) Successful in 6s
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Stage 6: gateway edge (Connect/FlatBuffers over h2c, platform/email/guest auth, sessions, rate-limit, admin passthrough, live push bridge)
New public ingress and the first network edge. Framework + a vertical slice of
operations end-to-end; remaining ops reuse the same transcode pattern in Stage 7.

Contracts (new module scrabble/pkg):
- push.proto (backend->gateway gRPC server-stream) + scrabble.fbs (FlatBuffers
  edge payloads), committed generated Go; buf/flatc Makefiles (dev-time codegen).

Backend:
- REST handlers on the /api/v1 groups: internal session endpoints
  (telegram/guest/email login -> mint, resolve, revoke) and the user slice
  (profile, submit_play, state, lobby enqueue/poll, chat).
- internal/notify in-process Publisher hub + internal/pushgrpc gRPC server
  (BACKEND_GRPC_ADDR) streaming your_turn/opponent_moved/chat/nudge/match_found;
  emission in game.commit, social, matchmaker.
- migration 00005 accounts.is_guest; guests are durable rows excluded from stats;
  ProvisionGuest; email-as-login (RequestLoginCode/LoginWithCode).

Gateway (new module scrabble/gateway):
- Connect Gateway service over h2c (Execute + Subscribe), FlatBuffers<->JSON
  transcode registry, Telegram initData HMAC validator (seam), session cache,
  token-bucket rate limiter (3 classes), push fan-out hub, backend REST + push
  gRPC client, admin Basic-Auth reverse proxy.

go.work: use ./pkg, ./gateway + replace scrabble/pkg. CI: gateway/**, pkg/**
path filters; unit build/vet/test span all three modules. Docs (PLAN,
ARCHITECTURE, FUNCTIONAL+ru, TESTING, READMEs) updated; gateway/pkg unit tests +
guest/email-login integration tests.
2026-06-02 22:38:24 +02:00

93 lines
3.4 KiB
Go

package notify
import (
"time"
flatbuffers "github.com/google/flatbuffers/go"
"github.com/google/uuid"
fb "scrabble/pkg/fbs/scrabblefb"
)
// The constructors below build one Intent per live event, FlatBuffers-encoding
// the payload with the shared scrabblefb schema. Keeping the encoding here lets
// the game/social/lobby services emit events without importing the wire schema.
// YourTurn announces to userID that it is their turn in game gameID, with the
// turn's nominal deadline.
func YourTurn(userID, gameID uuid.UUID, deadline time.Time) Intent {
b := flatbuffers.NewBuilder(64)
gid := b.CreateString(gameID.String())
fb.YourTurnEventStart(b)
fb.YourTurnEventAddGameId(b, gid)
fb.YourTurnEventAddDeadlineUnix(b, deadline.Unix())
b.Finish(fb.YourTurnEventEnd(b))
return Intent{UserID: userID, Kind: KindYourTurn, Payload: b.FinishedBytes(), EventID: eventID()}
}
// OpponentMoved tells userID that seat just committed a move in game gameID,
// summarising it (the client refetches the full state).
func OpponentMoved(userID, gameID uuid.UUID, seat int, action string, score, total int) Intent {
b := flatbuffers.NewBuilder(64)
gid := b.CreateString(gameID.String())
act := b.CreateString(action)
fb.OpponentMovedEventStart(b)
fb.OpponentMovedEventAddGameId(b, gid)
fb.OpponentMovedEventAddSeat(b, int32(seat))
fb.OpponentMovedEventAddAction(b, act)
fb.OpponentMovedEventAddScore(b, int32(score))
fb.OpponentMovedEventAddTotal(b, int32(total))
b.Finish(fb.OpponentMovedEventEnd(b))
return Intent{UserID: userID, Kind: KindOpponentMoved, Payload: b.FinishedBytes(), EventID: eventID()}
}
// ChatMessage delivers a stored chat message (or nudge) to userID.
func ChatMessage(userID, gameID, senderID uuid.UUID, id, kind, body string, createdAt time.Time) Intent {
b := flatbuffers.NewBuilder(128)
idOff := b.CreateString(id)
gid := b.CreateString(gameID.String())
sid := b.CreateString(senderID.String())
kindOff := b.CreateString(kind)
bodyOff := b.CreateString(body)
fb.ChatMessageStart(b)
fb.ChatMessageAddId(b, idOff)
fb.ChatMessageAddGameId(b, gid)
fb.ChatMessageAddSenderId(b, sid)
fb.ChatMessageAddKind(b, kindOff)
fb.ChatMessageAddBody(b, bodyOff)
fb.ChatMessageAddCreatedAtUnix(b, createdAt.Unix())
b.Finish(fb.ChatMessageEnd(b))
return Intent{UserID: userID, Kind: KindChatMessage, Payload: b.FinishedBytes(), EventID: eventID()}
}
// Nudge tells userID that fromUserID nudged them in game gameID.
func Nudge(userID, gameID, fromUserID uuid.UUID) Intent {
b := flatbuffers.NewBuilder(64)
gid := b.CreateString(gameID.String())
from := b.CreateString(fromUserID.String())
fb.NudgeEventStart(b)
fb.NudgeEventAddGameId(b, gid)
fb.NudgeEventAddFromUserId(b, from)
b.Finish(fb.NudgeEventEnd(b))
return Intent{UserID: userID, Kind: KindNudge, Payload: b.FinishedBytes(), EventID: eventID()}
}
// MatchFound tells userID that game gameID, which they are seated in, has
// started (an auto-match pairing or a robot substitution).
func MatchFound(userID, gameID uuid.UUID) Intent {
b := flatbuffers.NewBuilder(64)
gid := b.CreateString(gameID.String())
fb.MatchFoundEventStart(b)
fb.MatchFoundEventAddGameId(b, gid)
b.Finish(fb.MatchFoundEventEnd(b))
return Intent{UserID: userID, Kind: KindMatchFound, Payload: b.FinishedBytes(), EventID: eventID()}
}
// eventID returns a best-effort correlation id for one emitted event.
func eventID() string {
if id, err := uuid.NewV7(); err == nil {
return id.String()
}
return ""
}