veza/veza-backend-api/cmd/api/main.go
2025-12-16 13:34:08 -05:00

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package main
import (
"context"
"fmt"
"log"
"net/http"
_ "net/http/pprof" // MOD-P2-006: Activer pprof pour profiling
"os"
"os/signal"
"syscall"
"time"
"github.com/getsentry/sentry-go"
"github.com/gin-gonic/gin"
"github.com/joho/godotenv"
"go.uber.org/zap"
"veza-backend-api/internal/api"
"veza-backend-api/internal/config"
"veza-backend-api/internal/metrics"
_ "veza-backend-api/docs" // Import docs for swagger
)
// @title Veza Backend API
// @version 1.2.0
// @description Backend API for Veza platform.
// @termsOfService http://swagger.io/terms/
// @contact.name API Support
// @contact.url http://www.veza.app/support
// @contact.email support@veza.app
// @license.name Apache 2.0
// @license.url http://www.apache.org/licenses/LICENSE-2.0.html
// @host localhost:8080
// @BasePath /api/v1
// @securityDefinitions.apikey BearerAuth
// @in header
// @name Authorization
func main() {
// Charger les variables d'environnement
if err := godotenv.Load(); err != nil {
log.Printf(" Note: Fichier .env non trouvé, utilisation des variables d'environnement système")
}
// Configuration du logger
logger, err := zap.NewProduction()
if err != nil {
log.Fatalf("Impossible d'initialiser le logger: %v", err)
}
defer logger.Sync()
logger.Info("🚀 Démarrage de Veza Backend API")
// Charger la configuration
cfg, err := config.NewConfig()
if err != nil {
logger.Fatal("❌ Impossible de charger la configuration", zap.Error(err))
}
// Valider la configuration
if err := cfg.Validate(); err != nil {
logger.Fatal("❌ Configuration invalide", zap.Error(err))
}
// Initialiser Sentry si DSN configuré
if cfg.SentryDsn != "" {
err := sentry.Init(sentry.ClientOptions{
Dsn: cfg.SentryDsn,
Environment: cfg.SentryEnvironment,
TracesSampleRate: cfg.SentrySampleRateTransactions,
SampleRate: cfg.SentrySampleRateErrors,
// AttachStacktrace pour capturer les stack traces
AttachStacktrace: true,
})
if err != nil {
logger.Warn("❌ Impossible d'initialiser Sentry", zap.Error(err))
} else {
logger.Info("✅ Sentry initialisé", zap.String("environment", cfg.SentryEnvironment))
}
// Flush les événements Sentry avant shutdown
defer sentry.Flush(2 * time.Second)
} else {
logger.Info(" Sentry non configuré (SENTRY_DSN non défini)")
}
// Initialisation de la base de données
db := cfg.Database
if db == nil {
logger.Fatal("❌ Base de données non initialisée")
}
defer db.Close()
if err := db.Initialize(); err != nil {
logger.Fatal("❌ Impossible d'initialiser la base de données", zap.Error(err))
}
// MOD-P2-004: Démarrer le collecteur de métriques DB pool
// Collecte les stats DB pool toutes les 10 secondes et les expose via Prometheus
metrics.StartDBPoolStatsCollector(db.DB, 10*time.Second)
logger.Info("✅ Collecteur de métriques DB pool démarré")
// Fail-Fast: Vérifier RabbitMQ si activé
if cfg.RabbitMQEnable {
if cfg.RabbitMQEventBus == nil {
logger.Fatal("❌ RabbitMQ activé (RABBITMQ_ENABLE=true) mais non initialisé (problème de connexion?)")
} else {
// Optionnel: Check connection status if RabbitMQEventBus exposes it
// For now, assume if initialized it's connected or retrying.
// If we want STRICT fail fast, we would need to verify connection is Open here.
logger.Info("✅ RabbitMQ actif")
}
} else {
logger.Info(" RabbitMQ désactivé")
}
// Démarrer le Job Worker
if cfg.JobWorker != nil {
workerCtx, workerCancel := context.WithCancel(context.Background())
defer workerCancel()
cfg.JobWorker.Start(workerCtx)
logger.Info("✅ Job Worker démarré")
} else {
logger.Warn("⚠️ Job Worker non initialisé")
}
// Configuration du mode Gin
// Correction: Utilisation directe de la variable d'env car non exposée dans Config
appEnv := os.Getenv("APP_ENV")
if appEnv == "production" {
gin.SetMode(gin.ReleaseMode)
} else {
gin.SetMode(gin.DebugMode)
}
// Créer le router Gin
router := gin.New()
// Middleware globaux (Logger, Recovery) recommandés par ORIGIN
router.Use(gin.Logger(), gin.Recovery())
// Configuration des routes
apiRouter := api.NewAPIRouter(db, cfg) // Instantiate APIRouter
apiRouter.Setup(router) // Call its Setup method
// Configuration du serveur HTTP
port := fmt.Sprintf("%d", cfg.AppPort)
if cfg.AppPort == 0 {
port = "8080"
}
server := &http.Server{
Addr: fmt.Sprintf(":%s", port),
Handler: router,
ReadTimeout: 30 * time.Second, // Standards ORIGIN
WriteTimeout: 30 * time.Second,
}
// Gestion de l'arrêt gracieux
quit := make(chan os.Signal, 1)
signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
go func() {
logger.Info("🌐 Serveur HTTP démarré", zap.String("port", port))
if err := server.ListenAndServe(); err != nil && err != http.ErrServerClosed {
logger.Fatal("❌ Erreur du serveur HTTP", zap.Error(err))
}
}()
<-quit
logger.Info("🔄 Arrêt du serveur...")
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
if err := server.Shutdown(ctx); err != nil {
logger.Error("❌ Erreur lors de l'arrêt", zap.Error(err))
} else {
logger.Info("✅ Serveur arrêté proprement")
}
}