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feat: async dish recognition (Kafka/Watermill/SSE) + remove Wire + consolidate migrations

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Async recognition pipeline:
- POST /ai/recognize-dish → 202 {job_id, queue_position, estimated_seconds}
- GET /ai/jobs/{id}/stream — SSE stream: queued → processing → done/failed
- Kafka topics: ai.recognize.paid (3 partitions) + ai.recognize.free (1 partition)
- 5-worker WorkerPool with priority loop (paid consumers first)
- SSEBroker via PostgreSQL LISTEN/NOTIFY
- Kafka adapter migrated from franz-go to Watermill (watermill-kafka/v2)
- Docker Compose: added Kafka + Zookeeper + kafka-init service
- Flutter: recognition_service.dart uses SSE; home_screen shows live job status

Remove google/wire (archived):
- Deleted wire.go (wireinject spec) and wire_gen.go
- Added cmd/server/init.go — plain Go manual DI, same initApp() logic
- Removed github.com/google/wire from go.mod

Consolidate migrations:
- Merged 001_initial_schema + 002_seed_data + 003_recognition_jobs into single 001_initial_schema.sql
- Deleted 002_seed_data.sql and 003_recognition_jobs.sql

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
dbastrikin
2026-03-18 16:32:06 +02:00
parent ad00998344
commit 39193ec13c
22 changed files with 1574 additions and 582 deletions
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37
backend/cmd/server/providers.go
View File

@@ -8,6 +8,7 @@ import (
"github.com/food-ai/backend/internal/infra/config"
"github.com/food-ai/backend/internal/domain/diary"
"github.com/food-ai/backend/internal/domain/dish"
"github.com/food-ai/backend/internal/adapters/kafka"
"github.com/food-ai/backend/internal/adapters/openai"
"github.com/food-ai/backend/internal/domain/home"
"github.com/food-ai/backend/internal/domain/ingredient"
@@ -188,17 +189,35 @@ func newAuthMiddleware(validator middleware.AccessTokenValidator) func(http.Hand
return middleware.Auth(validator)
}
// ---------------------------------------------------------------------------
// Kafka providers
// ---------------------------------------------------------------------------
func newKafkaProducer(appConfig *config.Config) (*kafka.Producer, error) {
return kafka.NewProducer(appConfig.KafkaBrokers)
}
func newPaidKafkaConsumer(appConfig *config.Config) (*kafka.Consumer, error) {
return kafka.NewConsumer(appConfig.KafkaBrokers, "dish-recognition-workers", recognition.TopicPaid)
}
func newFreeKafkaConsumer(appConfig *config.Config) (*kafka.Consumer, error) {
return kafka.NewConsumer(appConfig.KafkaBrokers, "dish-recognition-workers", recognition.TopicFree)
}
// ---------------------------------------------------------------------------
// Interface assertions (compile-time checks)
// ---------------------------------------------------------------------------
var _ middleware.AccessTokenValidator = (*jwtAdapter)(nil)
var _ menu.PhotoSearcher = (*pexels.Client)(nil)
var _ menu.UserLoader = (*user.Repository)(nil)
var _ menu.ProductLister = (*product.Repository)(nil)
var _ menu.RecipeSaver = (*dish.Repository)(nil)
var _ recommendation.PhotoSearcher = (*pexels.Client)(nil)
var _ recommendation.UserLoader = (*user.Repository)(nil)
var _ recommendation.ProductLister = (*product.Repository)(nil)
var _ middleware.AccessTokenValidator = (*jwtAdapter)(nil)
var _ menu.PhotoSearcher = (*pexels.Client)(nil)
var _ menu.UserLoader = (*user.Repository)(nil)
var _ menu.ProductLister = (*product.Repository)(nil)
var _ menu.RecipeSaver = (*dish.Repository)(nil)
var _ recommendation.PhotoSearcher = (*pexels.Client)(nil)
var _ recommendation.UserLoader = (*user.Repository)(nil)
var _ recommendation.ProductLister = (*product.Repository)(nil)
var _ recognition.IngredientRepository = (*ingredient.Repository)(nil)
var _ user.UserRepository = (*user.Repository)(nil)
var _ recognition.KafkaPublisher = (*kafka.Producer)(nil)
var _ recognition.JobRepository = (*recognition.PostgresJobRepository)(nil)
var _ user.UserRepository = (*user.Repository)(nil)