423 lines
12 KiB
Go
423 lines
12 KiB
Go
package main
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import (
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"context"
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"database/sql"
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"flag"
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"fmt"
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"net/http"
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"os"
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"os/signal"
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"syscall"
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"time"
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"github.com/gin-gonic/gin"
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_ "github.com/lib/pq"
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amqp "github.com/rabbitmq/amqp091-go"
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"github.com/redis/go-redis/v9"
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"github.com/rwadurian/mpc-system/pkg/config"
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"github.com/rwadurian/mpc-system/pkg/jwt"
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"github.com/rwadurian/mpc-system/pkg/logger"
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httphandler "github.com/rwadurian/mpc-system/services/account/adapters/input/http"
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grpcadapter "github.com/rwadurian/mpc-system/services/account/adapters/output/grpc"
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jwtadapter "github.com/rwadurian/mpc-system/services/account/adapters/output/jwt"
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"github.com/rwadurian/mpc-system/services/account/adapters/output/postgres"
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"github.com/rwadurian/mpc-system/services/account/adapters/output/rabbitmq"
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redisadapter "github.com/rwadurian/mpc-system/services/account/adapters/output/redis"
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"github.com/rwadurian/mpc-system/services/account/application/use_cases"
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"github.com/rwadurian/mpc-system/services/account/domain/services"
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"go.uber.org/zap"
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)
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func main() {
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// Parse flags
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configPath := flag.String("config", "", "Path to config file")
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flag.Parse()
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// Load configuration
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cfg, err := config.Load(*configPath)
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if err != nil {
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fmt.Printf("Failed to load config: %v\n", err)
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os.Exit(1)
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}
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// Initialize logger
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if err := logger.Init(&logger.Config{
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Level: cfg.Logger.Level,
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Encoding: cfg.Logger.Encoding,
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}); err != nil {
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fmt.Printf("Failed to initialize logger: %v\n", err)
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os.Exit(1)
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}
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defer logger.Sync()
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logger.Info("Starting Account Service",
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zap.String("environment", cfg.Server.Environment),
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zap.Int("http_port", cfg.Server.HTTPPort))
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// Initialize database connection
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db, err := initDatabase(cfg.Database)
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if err != nil {
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logger.Fatal("Failed to connect to database", zap.Error(err))
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}
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defer db.Close()
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// Initialize Redis connection
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redisClient := initRedis(cfg.Redis)
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defer redisClient.Close()
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// Initialize RabbitMQ connection
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rabbitConn, err := initRabbitMQ(cfg.RabbitMQ)
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if err != nil {
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logger.Fatal("Failed to connect to RabbitMQ", zap.Error(err))
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}
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defer rabbitConn.Close()
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// Initialize gRPC client for session coordinator
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sessionCoordinatorAddr := "mpc-session-coordinator:50051"
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sessionCoordinatorClient, err := grpcadapter.NewSessionCoordinatorClient(sessionCoordinatorAddr)
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if err != nil {
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logger.Fatal("Failed to connect to session coordinator", zap.Error(err))
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}
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defer sessionCoordinatorClient.Close()
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// Initialize repositories
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accountRepo := postgres.NewAccountPostgresRepo(db)
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shareRepo := postgres.NewAccountSharePostgresRepo(db)
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recoveryRepo := postgres.NewRecoverySessionPostgresRepo(db)
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// Initialize adapters
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eventPublisher, err := rabbitmq.NewEventPublisherAdapter(rabbitConn)
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if err != nil {
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logger.Fatal("Failed to create event publisher", zap.Error(err))
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}
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defer eventPublisher.Close()
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cacheAdapter := redisadapter.NewCacheAdapter(redisClient)
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// Initialize JWT service
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jwtService := jwt.NewJWTService(
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cfg.JWT.SecretKey,
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cfg.JWT.Issuer,
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cfg.JWT.TokenExpiry,
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cfg.JWT.RefreshExpiry,
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)
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tokenService := jwtadapter.NewTokenServiceAdapter(jwtService)
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// Initialize domain service
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domainService := services.NewAccountDomainService(accountRepo, shareRepo, recoveryRepo)
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// Initialize use cases
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createAccountUC := use_cases.NewCreateAccountUseCase(accountRepo, shareRepo, domainService, eventPublisher)
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getAccountUC := use_cases.NewGetAccountUseCase(accountRepo, shareRepo)
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updateAccountUC := use_cases.NewUpdateAccountUseCase(accountRepo, eventPublisher)
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listAccountsUC := use_cases.NewListAccountsUseCase(accountRepo)
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getAccountSharesUC := use_cases.NewGetAccountSharesUseCase(accountRepo, shareRepo)
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deactivateShareUC := use_cases.NewDeactivateShareUseCase(accountRepo, shareRepo, eventPublisher)
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loginUC := use_cases.NewLoginUseCase(accountRepo, shareRepo, tokenService, eventPublisher)
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refreshTokenUC := use_cases.NewRefreshTokenUseCase(accountRepo, tokenService)
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generateChallengeUC := use_cases.NewGenerateChallengeUseCase(cacheAdapter)
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initiateRecoveryUC := use_cases.NewInitiateRecoveryUseCase(accountRepo, recoveryRepo, domainService, eventPublisher)
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completeRecoveryUC := use_cases.NewCompleteRecoveryUseCase(accountRepo, shareRepo, recoveryRepo, domainService, eventPublisher)
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getRecoveryStatusUC := use_cases.NewGetRecoveryStatusUseCase(recoveryRepo)
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cancelRecoveryUC := use_cases.NewCancelRecoveryUseCase(accountRepo, recoveryRepo)
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// Create shutdown context
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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// Start HTTP server
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errChan := make(chan error, 1)
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go func() {
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if err := startHTTPServer(
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cfg,
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createAccountUC,
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getAccountUC,
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updateAccountUC,
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listAccountsUC,
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getAccountSharesUC,
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deactivateShareUC,
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loginUC,
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refreshTokenUC,
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generateChallengeUC,
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initiateRecoveryUC,
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completeRecoveryUC,
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getRecoveryStatusUC,
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cancelRecoveryUC,
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sessionCoordinatorClient,
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); err != nil {
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errChan <- fmt.Errorf("HTTP server error: %w", err)
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}
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}()
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// Wait for shutdown signal
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sigChan := make(chan os.Signal, 1)
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signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
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select {
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case sig := <-sigChan:
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logger.Info("Received shutdown signal", zap.String("signal", sig.String()))
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case err := <-errChan:
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logger.Error("Server error", zap.Error(err))
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}
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// Graceful shutdown
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logger.Info("Shutting down...")
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cancel()
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// Give services time to shutdown gracefully
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time.Sleep(5 * time.Second)
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logger.Info("Shutdown complete")
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_ = ctx
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}
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func initDatabase(cfg config.DatabaseConfig) (*sql.DB, error) {
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const maxRetries = 10
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const retryDelay = 2 * time.Second
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var db *sql.DB
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var err error
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for i := 0; i < maxRetries; i++ {
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db, err = sql.Open("postgres", cfg.DSN())
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if err != nil {
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logger.Warn("Failed to open database connection, retrying...",
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zap.Int("attempt", i+1),
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zap.Int("max_retries", maxRetries),
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zap.Error(err))
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time.Sleep(retryDelay * time.Duration(i+1))
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continue
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}
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db.SetMaxOpenConns(cfg.MaxOpenConns)
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db.SetMaxIdleConns(cfg.MaxIdleConns)
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db.SetConnMaxLifetime(cfg.ConnMaxLife)
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// Test connection with Ping
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if err = db.Ping(); err != nil {
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logger.Warn("Failed to ping database, retrying...",
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zap.Int("attempt", i+1),
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zap.Int("max_retries", maxRetries),
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zap.Error(err))
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db.Close()
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time.Sleep(retryDelay * time.Duration(i+1))
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continue
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}
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// Verify database is actually usable with a simple query
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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var result int
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err = db.QueryRowContext(ctx, "SELECT 1").Scan(&result)
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cancel()
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if err != nil {
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logger.Warn("Database ping succeeded but query failed, retrying...",
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zap.Int("attempt", i+1),
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zap.Int("max_retries", maxRetries),
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zap.Error(err))
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db.Close()
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time.Sleep(retryDelay * time.Duration(i+1))
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continue
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}
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logger.Info("Connected to PostgreSQL and verified connectivity",
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zap.Int("attempt", i+1))
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return db, nil
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}
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return nil, fmt.Errorf("failed to connect to database after %d retries: %w", maxRetries, err)
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}
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func initRedis(cfg config.RedisConfig) *redis.Client {
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const maxRetries = 10
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const retryDelay = 2 * time.Second
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client := redis.NewClient(&redis.Options{
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Addr: cfg.Addr(),
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Password: cfg.Password,
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DB: cfg.DB,
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})
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// Test connection with retry
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ctx := context.Background()
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for i := 0; i < maxRetries; i++ {
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if err := client.Ping(ctx).Err(); err != nil {
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logger.Warn("Redis connection failed, retrying...",
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zap.Int("attempt", i+1),
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zap.Int("max_retries", maxRetries),
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zap.Error(err))
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time.Sleep(retryDelay * time.Duration(i+1))
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continue
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}
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logger.Info("Connected to Redis")
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return client
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}
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logger.Warn("Redis connection failed after retries, continuing without cache")
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return client
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}
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func initRabbitMQ(cfg config.RabbitMQConfig) (*amqp.Connection, error) {
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const maxRetries = 10
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const retryDelay = 2 * time.Second
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var conn *amqp.Connection
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var err error
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for i := 0; i < maxRetries; i++ {
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// Attempt to dial RabbitMQ
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conn, err = amqp.Dial(cfg.URL())
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if err != nil {
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logger.Warn("Failed to dial RabbitMQ, retrying...",
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zap.Int("attempt", i+1),
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zap.Int("max_retries", maxRetries),
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zap.String("url", maskPassword(cfg.URL())),
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zap.Error(err))
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time.Sleep(retryDelay * time.Duration(i+1))
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continue
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}
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// Verify connection is actually usable by opening a channel
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ch, err := conn.Channel()
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if err != nil {
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logger.Warn("RabbitMQ connection established but channel creation failed, retrying...",
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zap.Int("attempt", i+1),
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zap.Int("max_retries", maxRetries),
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zap.Error(err))
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conn.Close()
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time.Sleep(retryDelay * time.Duration(i+1))
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continue
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}
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// Test the channel with a simple operation (declare a test exchange)
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err = ch.ExchangeDeclare(
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"mpc.health.check", // name
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"fanout", // type
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false, // durable
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true, // auto-deleted
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false, // internal
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false, // no-wait
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nil, // arguments
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)
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if err != nil {
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logger.Warn("RabbitMQ channel created but exchange declaration failed, retrying...",
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zap.Int("attempt", i+1),
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zap.Int("max_retries", maxRetries),
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zap.Error(err))
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ch.Close()
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conn.Close()
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time.Sleep(retryDelay * time.Duration(i+1))
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continue
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}
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// Clean up test exchange
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ch.ExchangeDelete("mpc.health.check", false, false)
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ch.Close()
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// Setup connection close notification
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closeChan := make(chan *amqp.Error, 1)
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conn.NotifyClose(closeChan)
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go func() {
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err := <-closeChan
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if err != nil {
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logger.Error("RabbitMQ connection closed unexpectedly", zap.Error(err))
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}
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}()
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logger.Info("Connected to RabbitMQ and verified connectivity",
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zap.Int("attempt", i+1))
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return conn, nil
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}
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return nil, fmt.Errorf("failed to connect to RabbitMQ after %d retries: %w", maxRetries, err)
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}
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// maskPassword masks the password in the RabbitMQ URL for logging
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func maskPassword(url string) string {
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// Simple masking: amqp://user:password@host:port -> amqp://user:****@host:port
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start := 0
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for i := 0; i < len(url); i++ {
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if url[i] == ':' && i > 0 && url[i-1] != '/' {
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start = i + 1
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break
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}
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}
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if start == 0 {
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return url
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}
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end := start
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for i := start; i < len(url); i++ {
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if url[i] == '@' {
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end = i
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break
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}
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}
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if end == start {
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return url
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}
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return url[:start] + "****" + url[end:]
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}
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func startHTTPServer(
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cfg *config.Config,
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createAccountUC *use_cases.CreateAccountUseCase,
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getAccountUC *use_cases.GetAccountUseCase,
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updateAccountUC *use_cases.UpdateAccountUseCase,
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listAccountsUC *use_cases.ListAccountsUseCase,
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getAccountSharesUC *use_cases.GetAccountSharesUseCase,
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deactivateShareUC *use_cases.DeactivateShareUseCase,
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loginUC *use_cases.LoginUseCase,
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refreshTokenUC *use_cases.RefreshTokenUseCase,
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generateChallengeUC *use_cases.GenerateChallengeUseCase,
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initiateRecoveryUC *use_cases.InitiateRecoveryUseCase,
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completeRecoveryUC *use_cases.CompleteRecoveryUseCase,
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getRecoveryStatusUC *use_cases.GetRecoveryStatusUseCase,
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cancelRecoveryUC *use_cases.CancelRecoveryUseCase,
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sessionCoordinatorClient *grpcadapter.SessionCoordinatorClient,
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) error {
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// Set Gin mode
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if cfg.Server.Environment == "production" {
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gin.SetMode(gin.ReleaseMode)
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}
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router := gin.New()
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router.Use(gin.Recovery())
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router.Use(gin.Logger())
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// Create HTTP handler with session coordinator client
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httpHandler := httphandler.NewAccountHTTPHandler(
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createAccountUC,
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getAccountUC,
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updateAccountUC,
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listAccountsUC,
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getAccountSharesUC,
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deactivateShareUC,
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loginUC,
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refreshTokenUC,
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generateChallengeUC,
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initiateRecoveryUC,
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completeRecoveryUC,
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getRecoveryStatusUC,
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cancelRecoveryUC,
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sessionCoordinatorClient,
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)
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// Health check
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router.GET("/health", func(c *gin.Context) {
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c.JSON(http.StatusOK, gin.H{
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"status": "healthy",
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"service": "account",
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})
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})
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// Register API routes
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api := router.Group("/api/v1")
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httpHandler.RegisterRoutes(api)
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logger.Info("Starting HTTP server", zap.Int("port", cfg.Server.HTTPPort))
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return router.Run(fmt.Sprintf(":%d", cfg.Server.HTTPPort))
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}
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