Kwaku Danso
3f8bc58ca9
Phase 1 — Core API (Go): - Events, guests, tokens, RSVPs CRUD on PostgreSQL via pgx/v5 - HMAC-signed per-guest tokens with format validation - Health endpoint with DB ping, slog JSON logging, graceful shutdown Phase 2 — NATS + Fraud Engine: - NATS JetStream pub/sub with explicit-ack consumers - Python/FastAPI fraud engine with heuristic risk scoring (fingerprint mismatch, IP change, missing signals, repeated access) - gRPC sync scoring with 250ms fail-open timeout - Per-guest baseline tracking; risk bands low/medium/high/block Phase 3 — Notifications + Frontend: - Notification worker scaffolding (Twilio/SES stubs, retry/backoff) - Nuxt 3 frontend with Tailwind dark theme + brand green - Live monitor via WebSocket with auto-reconnect - Activity history endpoint backfills monitor with RSVPs + scored access checks (including blocked attempts) UX polish: - Marketing-friendly landing page (hero mockup, how-it-works, features, use cases, testimonials, FAQ, final CTA) - Animated layered card mockups on landing + new-event page - Plus-ones stepper, RSVP status badges, filter buttons - Friendly access-check labels (Verified/Review/Suspicious/Blocked) - Dashboard hydration fix via ClientOnly wrapper Infrastructure: - docker-compose for full local dev (postgres, nats, api, fraud-engine, notifier, frontend) - Multi-stage Dockerfiles, non-root UID 1000 - Integration tests with testcontainers-go Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
65 lines
1.6 KiB
Go
65 lines
1.6 KiB
Go
package natspub
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import (
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"context"
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"encoding/json"
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"fmt"
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"log/slog"
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"time"
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"github.com/nats-io/nats.go/jetstream"
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)
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type RSVPConfirmedHandler func(ctx context.Context, evt RSVPConfirmed) error
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type RSVPConfirmedSubscriber struct {
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logger *slog.Logger
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consumer jetstream.Consumer
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handler RSVPConfirmedHandler
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}
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func NewRSVPConfirmedSubscriber(
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ctx context.Context,
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c *Client,
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durable string,
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handler RSVPConfirmedHandler,
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logger *slog.Logger,
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) (*RSVPConfirmedSubscriber, error) {
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cons, err := c.js.CreateOrUpdateConsumer(ctx, StreamName, jetstream.ConsumerConfig{
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Durable: durable,
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Name: durable,
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FilterSubject: SubjectRSVPConfirmed,
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AckPolicy: jetstream.AckExplicitPolicy,
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DeliverPolicy: jetstream.DeliverAllPolicy,
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MaxDeliver: 5,
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AckWait: 30 * time.Second,
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})
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if err != nil {
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return nil, fmt.Errorf("create consumer %s: %w", durable, err)
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}
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return &RSVPConfirmedSubscriber{logger: logger, consumer: cons, handler: handler}, nil
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}
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func (s *RSVPConfirmedSubscriber) Start(ctx context.Context) (jetstream.ConsumeContext, error) {
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cc, err := s.consumer.Consume(func(msg jetstream.Msg) {
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var evt RSVPConfirmed
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if err := json.Unmarshal(msg.Data(), &evt); err != nil {
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s.logger.Error("decode rsvp.confirmed", "err", err)
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_ = msg.Term()
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return
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}
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hctx, cancel := context.WithTimeout(ctx, 10*time.Second)
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defer cancel()
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if err := s.handler(hctx, evt); err != nil {
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s.logger.Error("handle rsvp.confirmed", "err", err)
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_ = msg.NakWithDelay(2 * time.Second)
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return
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}
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_ = msg.Ack()
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})
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if err != nil {
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return nil, fmt.Errorf("consume: %w", err)
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}
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return cc, nil
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}
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