Delete cmd/futriis/main-old.go

cmd/futriis/main-old.go

@@ -1,708 +0,0 @@
-/*
- * Copyright 2026 Safronov Grigorii
- *
- * Licensed under the CDDL, Version 1.0 (the "License");
- * you may not use this file except in compliance with the License.
- *
- * You may obtain a copy of the License at
- * https://opensource.org/licenses/CDDL-1.0
- *
- * Файл: cmd/futriis/main.go
- * Назначение: Точка входа в приложение СУБД futriis.
- *
- * ИСПРАВЛЕНО:
- *   - Валидация пути к конфигурации и проверка прав доступа к файлу
- *   - Валидация конфигурации после загрузки (ValidateConfig)
- *   - WAL и data-dir привязаны к директории futriis, а не CWD
- *   - Graceful shutdown: убраны os.Exit(1) до завершения defer'ов,
- *     используется переменная exitCode и os.Exit в самом конце
- *   - Ожидание запуска HTTP-сервера с таймаутом
- *   - SAGA оркестратор останавливается всегда (даже если disabled)
- *   - Проверка allow-list для плагинов перед StartPlugin
- *   - Заменён SIGHUP на SIGUSR1 (reload) + SIGTERM/SIGINT (shutdown)
- *   - Проверка nil для raftCoordinator перед использованием
- *   - repl.NewRepl теперь возвращает (*Repl, error)
- *   - Интеграция с Prometheus: /metrics endpoint
- *   - ДОБАВЛЕНО: поддержка TLS на HTTP API (вариант A — TLS внутри futriiX).
- *     Теперь используется api.NewHTTPServerWithTLS(..., &cfg.Security).
- *   - ИСПРАВЛЕНО (UI): убраны лишние пустые строки перед баннером, чтобы
- *     строка "futriis 3i²(by 29.09.2026)" шла сразу после сообщения ACL
- *     о созданном admin-пользователе.
- *   - ИСПРАВЛЕНО (UI): текст баннера окрашивается в точный #00bfff
- *     (Deep Sky Blue) через utils.PrintlnDeepSkyBlueReset, чтобы совпадать
- *     с цветом надписи "futriis 3i²(by 29.09.2026)".
- *   - ИСПРАВЛЕНО: acl.NewACLManager() теперь возвращает (*ACLManager, error).
- *     Обрабатываем ошибку и завершаемся через os.Exit(1) с логом,
- *     без panic и stack trace.
- *
- * ИСПРАВЛЕНО (2026-10): после замены ACID-транзакций на batch-операции
- * функции storage.InitTransactionManager, storage.SetTransactionLogger,
- * storage.StopTransactionManager были удалены. Заменены на:
- *   - storage.InitBatchManager(walPath)  — инициализирует batch-менеджер,
- *     WAL и AOF (append-only file для мутаций вне batch);
- *   - storage.SetBatchLogger(logger)     — устанавливает логгер;
- *   - storage.StopBatchManager()         — останавливает batch-менеджер,
- *     WAL и AOF.
- * Дополнительно: при shutdown логируется состояние batch-статистики
- * (количество выполненных batch'ей, операций, ошибок) для диагностики.
- */
-
-package main
-
-import (
-	"context"
-	"encoding/json"
-	"errors"
-	"fmt"
-	"net"
-	"net/http"
-	"os"
-	"os/signal"
-	"path/filepath"
-	"syscall"
-	"time"
-
-	"futriis/internal/acl"
-	"futriis/internal/api"
-	"futriis/internal/cluster"
-	"futriis/internal/config"
-	"futriis/internal/log"
-	"futriis/internal/metrics"
-	"futriis/internal/plugin"
-	"futriis/internal/repl"
-	"futriis/internal/storage"
-	"futriis/pkg/utils"
-)
-
-const (
-	defaultDataDir    = "futriis"
-	maxConfigFileSize = 1 * 1024 * 1024
-)
-
-var exitCode = 0
-
-func main() {
-	utils.SetColorEnabled(true)
-
-	logLevel := os.Getenv("LOG_LEVEL")
-	if logLevel == "" {
-		logLevel = "info"
-	}
-
-	dataDir, err := ensureDataDir()
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "Failed to prepare data directory: %v\n", err)
-		os.Exit(1)
-	}
-
-	logFile := filepath.Join(dataDir, "futriis.log")
-	if err := log.InitDefaultLogger(logFile, logLevel); err != nil {
-		fmt.Printf("Failed to initialize logger: %v\n", err)
-		os.Exit(1)
-	}
-
-	log.Info("Futriis DB starting...")
-	log.Infof("Log level: %s", logLevel)
-	log.Infof("Data directory: %s", dataDir)
-
-	configPath := os.Getenv("FUTRIIS_CONFIG")
-	if configPath == "" {
-		configPath = "config.toml"
-	}
-
-	cfg, err := loadAndValidateConfig(configPath)
-	if err != nil {
-		log.Error("Failed to load config: " + err.Error())
-		utils.PrintError("Failed to load config: " + err.Error())
-		os.Exit(1)
-	}
-
-	logger, err := log.NewLogger(cfg.Log.LogFile, cfg.Log.LogLevel)
-	if err != nil {
-		log.Error("Failed to initialize logger: " + err.Error())
-		utils.PrintError("Failed to initialize logger: " + err.Error())
-		os.Exit(1)
-	}
-	defer logger.Close()
-	logger.Info("futriis database starting...")
-
-	store := storage.NewStorage(cfg.Storage.PageSizeMB, logger)
-	storage.SetGlobalStorage(store)
-
-	// ========== BATCH MANAGER (замена TransactionManager) ==========
-	//
-	// ИСПРАВЛЕНО (2026-10): InitTransactionManager заменён на InitBatchManager.
-	// InitBatchManager инициализирует:
-	//   - WAL (сегментированный журнал для batch-операций);
-	//   - AOF (append-only file для мутаций вне batch).
-	// Директория AOF создаётся автоматически как filepath.Join(filepath.Dir(walPath), "aof").
-	walPath := filepath.Join(dataDir, "futriis.wal")
-	if err := storage.InitBatchManager(walPath); err != nil {
-		logger.Warn("Failed to initialize batch manager: " + err.Error())
-	} else {
-		storage.SetBatchLogger(logger)
-		logger.Info("Batch manager initialized (WAL + AOF)")
-		logger.Info(fmt.Sprintf("  WAL path: %s", walPath))
-		logger.Info(fmt.Sprintf("  AOF path: %s", filepath.Join(dataDir, "aof")))
-	}
-
-	storage.InitTriggerManager(logger)
-	logger.Info("Trigger manager initialized")
-
-	// ИСПРАВЛЕНО: NewACLManager теперь возвращает (*ACLManager, error).
-	// Обрабатываем ошибку управляемо (без panic) и завершаемся с кодом 1.
-	aclManager, err := acl.NewACLManager()
-	if err != nil {
-		logger.Error("Failed to initialize ACL manager: " + err.Error())
-		utils.PrintError("Failed to initialize ACL manager: " + err.Error())
-		os.Exit(1)
-	}
-	logger.Info("ACL manager initialized")
-
-	raftCoordinator, err := cluster.NewRaftCoordinator(cfg, store, logger)
-	if err != nil {
-		logger.Error("Failed to start Raft coordinator: " + err.Error())
-		utils.PrintError("Failed to start Raft coordinator: " + err.Error())
-		os.Exit(1)
-	}
-
-	// ========== SAGA ORCHESTRATOR ==========
-	var sagaOrchestrator *storage.SagaOrchestrator
-	if cfg.Saga.Enabled {
-		sagaConfig := &cfg.Saga
-		sagaOrchestrator, err = storage.NewSagaOrchestratorWithConfig(
-			sagaConfig,
-			cfg.Cluster.NodeIP+":"+fmt.Sprint(cfg.Cluster.NodePort),
-			logger,
-		)
-		if err != nil {
-			logger.Warn(fmt.Sprintf("Failed to initialize saga orchestrator: %v", err))
-		} else {
-			logger.Info(fmt.Sprintf("Saga orchestrator initialized with %d coordinators", sagaConfig.GetCoordinatorCount()))
-			storage.SetGlobalSagaOrchestrator(sagaOrchestrator)
-		}
-	} else {
-		logger.Info("Saga orchestrator disabled in configuration")
-	}
-
-	if raftCoordinator != nil {
-		schemaMigrator := raftCoordinator.GetSchemaMigrator()
-		if schemaMigrator != nil {
-			logger.Info("Checking for schema migrations...")
-			status := schemaMigrator.GetStatus()
-			logger.Infof("Current schema version: %s, total migrations: %d, applied: %d, pending: %d",
-				status.CurrentVersion, status.TotalMigrations, status.AppliedMigrations, status.PendingMigrations)
-			if status.PendingMigrations > 0 {
-				logger.Info("Applying pending schema migrations...")
-				if err := schemaMigrator.Migrate("2.1.0"); err != nil {
-					logger.Warn(fmt.Sprintf("Schema migration warning: %v", err))
-				}
-			}
-		}
-	}
-
-	if cfg.Cluster.Bootstrap || len(cfg.Cluster.Nodes) <= 1 {
-		for i := 0; i < 10; i++ {
-			if raftCoordinator.IsLeader() {
-				break
-			}
-			time.Sleep(1 * time.Second)
-		}
-	}
-
-	node := cluster.NewNode(cfg.Cluster.NodeIP, cfg.Cluster.NodePort, store, logger)
-
-	var registerErr error
-	for i := 0; i < 5; i++ {
-		registerErr = raftCoordinator.RegisterNode(node)
-		if registerErr == nil {
-			break
-		}
-		if i < 4 {
-			logger.Warn(fmt.Sprintf("Failed to register node (attempt %d/5): %v, retrying...", i+1, registerErr))
-			time.Sleep(2 * time.Second)
-		}
-	}
-	if registerErr != nil {
-		logger.Error("Failed to register node: " + registerErr.Error())
-		utils.PrintError("Failed to register node: " + registerErr.Error())
-		os.Exit(1)
-	}
-
-	pluginManager := plugin.NewPluginManager(
-		cfg.Plugins.ScriptDir,
-		logger,
-		store,
-		cfg.Plugins.Enabled,
-	)
-
-	if cfg.Plugins.Enabled {
-		logger.Info(fmt.Sprintf("Plugin manager initialized, directory: %s", cfg.Plugins.ScriptDir))
-		allowList := make(map[string]bool)
-		for _, name := range cfg.Plugins.AllowList {
-			allowList[name] = true
-		}
-		for _, p := range pluginManager.ListPlugins() {
-			if len(allowList) > 0 && !allowList[p.Name] {
-				logger.Warn(fmt.Sprintf("Plugin %s is not in allow-list, skipping start", p.Name))
-				continue
-			}
-			if err := pluginManager.StartPlugin(p.Name); err != nil {
-				logger.Warn(fmt.Sprintf("Failed to start plugin %s: %v", p.Name, err))
-			}
-		}
-	}
-
-	// ========== PROMETHEUS METRICS ==========
-	var metricsCollector *metrics.Collector
-	if cfg.Metrics.Enabled {
-		metricsCollector = metrics.NewCollector(metrics.CollectorDeps{
-			Storage:     newStorageStatsAdapter(store),
-			Coordinator: newCoordinatorStatsAdapter(raftCoordinator),
-			Logger:      logger,
-			Interval:    time.Duration(cfg.Metrics.CollectIntervalSec) * time.Second,
-		})
-		metricsCollector.Start()
-		logger.Info("Prometheus metrics collector enabled")
-	} else {
-		logger.Info("Prometheus metrics collector disabled in configuration")
-	}
-
-	// ========== HTTP API SERVER ==========
-	// ДОБАВЛЕНО: используем NewHTTPServerWithTLS и передаём cfg.Security.
-	// Если в config.toml [security].enable_tls = true, сервер поднимется по HTTPS.
-	httpPort := cfg.API.Port
-	httpServer := api.NewHTTPServerWithTLS(httpPort, store, raftCoordinator, aclManager, logger, &cfg.Security)
-	if metricsCollector != nil {
-		httpServer.SetMetricsCollector(metricsCollector)
-	}
-
-	httpErrChan := make(chan error, 1)
-	go func() {
-		if err := httpServer.Start(); err != nil && !errors.Is(err, http.ErrServerClosed) {
-			httpErrChan <- fmt.Errorf("HTTP server error: %w", err)
-		}
-	}()
-
-	httpStarted := false
-	for i := 0; i < 50; i++ {
-		select {
-		case err := <-httpErrChan:
-			logger.Error(err.Error())
-			utils.PrintError(err.Error())
-			os.Exit(1)
-		default:
-		}
-		if isPortListening(httpPort) {
-			httpStarted = true
-			break
-		}
-		time.Sleep(100 * time.Millisecond)
-	}
-	if !httpStarted {
-		logger.Warn("HTTP server did not start within timeout, continuing anyway")
-	}
-	scheme := "http"
-	if httpServer.IsTLSEnabled() {
-		scheme = "https"
-	}
-	logger.Info(fmt.Sprintf("HTTP API server started on %s://0.0.0.0:%d", scheme, httpPort))
-	if metricsCollector != nil {
-		logger.Info(fmt.Sprintf("Prometheus metrics available at %s://localhost:%d/metrics", scheme, httpPort))
-	}
-
-	if raftCoordinator != nil {
-		logger.Info("Cluster features enabled: Pipeline Replication, Batch Commit, Dynamic Resharding, Joint Consensus")
-		logger.Info("  - Single Point of Failure protection (Leader Fallback) - ENABLED")
-		logger.Info("  - Automatic Panic Recovery for goroutines - ENABLED")
-		logger.Info("  - Schema Migration support - ENABLED")
-		logger.Info("  - Full configuration validation - ENABLED")
-		logger.Info("  - Automatic data persistence - ENABLED")
-	}
-
-	// ИСПРАВЛЕНО (UI): убраны лишние пустые строки перед баннером.
-	// Внутри displayBanner уже есть utils.Println("") первой строкой,
-	// чтобы отделить баннер от ACL-сообщения. Строка "futriis 3i²(by
-	// 29.09.2026)" идёт сразу после сообщения ACL.
-	displayBanner(cfg.Cluster.Name, httpPort, raftCoordinator, cfg.Saga.Enabled, cfg.Metrics.Enabled)
-
-	replInstance, err := repl.NewRepl(store, raftCoordinator, logger, cfg, aclManager, pluginManager)
-	if err != nil {
-		logger.Error("Failed to initialize REPL: " + err.Error())
-		utils.PrintError("Failed to initialize REPL: " + err.Error())
-		os.Exit(1)
-	}
-	defer replInstance.Close()
-
-	// ========== GRACEFUL SHUTDOWN ==========
-	sigChan := make(chan os.Signal, 1)
-	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM, syscall.SIGUSR1)
-
-	go func() {
-		for sig := range sigChan {
-			switch sig {
-			case syscall.SIGUSR1:
-				logger.Info("Received SIGUSR1 (reload signal), reloading configuration...")
-				continue
-			case syscall.SIGINT, syscall.SIGTERM:
-				logger.Info(fmt.Sprintf("Received signal %v, starting graceful shutdown...", sig))
-			}
-			break
-		}
-
-		utils.Println("\nReceived shutdown signal, starting graceful shutdown...")
-
-		logger.Info("Stopping REPL...")
-		replInstance.Close()
-		logger.Info("REPL stopped")
-
-		logger.Info("Stopping HTTP server...")
-		shutdownCtx, shutdownCancel := context.WithTimeout(context.Background(), 30*time.Second)
-		defer shutdownCancel()
-
-		httpShutdownDone := make(chan struct{})
-		go func() {
-			if err := httpServer.Stop(); err != nil {
-				logger.Error(fmt.Sprintf("HTTP server stop error: %v", err))
-			}
-			close(httpShutdownDone)
-		}()
-		select {
-		case <-httpShutdownDone:
-			logger.Info("HTTP server stopped")
-		case <-shutdownCtx.Done():
-			logger.Warn("HTTP server shutdown timeout")
-		}
-
-		if metricsCollector != nil {
-			logger.Info("Stopping metrics collector...")
-			metricsCollector.Stop()
-			logger.Info("Metrics collector stopped")
-		}
-
-		if cfg.Plugins.Enabled && pluginManager != nil {
-			logger.Info("Stopping plugins...")
-			for _, p := range pluginManager.ListPlugins() {
-				if err := pluginManager.StopPlugin(p.Name); err != nil {
-					logger.Warn(fmt.Sprintf("Failed to stop plugin %s: %v", p.Name, err))
-				}
-			}
-		}
-
-		if sagaOrchestrator != nil {
-			logger.Info("Stopping SAGA orchestrator...")
-			sagaStopDone := make(chan struct{})
-			go func() {
-				sagaOrchestrator.Stop()
-				close(sagaStopDone)
-			}()
-			select {
-			case <-sagaStopDone:
-				logger.Info("SAGA orchestrator stopped")
-			case <-time.After(10 * time.Second):
-				logger.Warn("SAGA orchestrator shutdown timeout")
-			}
-		}
-
-		if raftCoordinator != nil {
-			logger.Info("Persisting data to disk...")
-			persistDone := make(chan struct{})
-			go func() {
-				if pm := raftCoordinator.GetPersistenceManager(); pm != nil {
-					if err := pm.SaveAll(); err != nil {
-						logger.Error(fmt.Sprintf("Failed to save data: %v", err))
-					}
-				}
-				close(persistDone)
-			}()
-			select {
-			case <-persistDone:
-				logger.Info("Persistence completed")
-			case <-time.After(15 * time.Second):
-				logger.Warn("Persistence timeout")
-			}
-		}
-
-		if raftCoordinator != nil {
-			logger.Info("Stopping Raft coordinator...")
-			raftStopDone := make(chan struct{})
-			go func() {
-				raftCoordinator.Stop()
-				close(raftStopDone)
-			}()
-			select {
-			case <-raftStopDone:
-				logger.Info("Raft coordinator stopped")
-			case <-time.After(15 * time.Second):
-				logger.Warn("Raft coordinator shutdown timeout")
-			}
-		}
-
-		logger.Info("Stopping cluster node...")
-		nodeStopDone := make(chan struct{})
-		go func() {
-			node.Stop()
-			close(nodeStopDone)
-		}()
-		select {
-		case <-nodeStopDone:
-			logger.Info("Cluster node stopped")
-		case <-time.After(10 * time.Second):
-			logger.Warn("Node shutdown timeout")
-		}
-
-		// ИСПРАВЛЕНО (2026-10): StopTransactionManager заменён на StopBatchManager.
-		// StopBatchManager синхронизирует WAL, закрывает его и закрывает AOF.
-		logger.Info("Stopping batch manager (WAL + AOF)...")
-		if stats := storage.GetBatchStats(); stats != nil {
-			logger.Info(fmt.Sprintf("  Batch stats: total_batches=%v, total_operations=%v, total_failed=%v, active_batches=%v",
-				stats["total_batches"], stats["total_operations"], stats["total_failed"], stats["active_batches"]))
-		}
-		batchStopDone := make(chan struct{})
-		go func() {
-			if err := storage.StopBatchManager(); err != nil {
-				logger.Error(fmt.Sprintf("Failed to stop batch manager: %v", err))
-			} else {
-				logger.Info("Batch manager stopped")
-			}
-			close(batchStopDone)
-		}()
-		select {
-		case <-batchStopDone:
-			// уже залогировано внутри горутины
-		case <-time.After(10 * time.Second):
-			logger.Warn("Batch manager shutdown timeout")
-		}
-
-		logger.Info("Finalizing logger...")
-		if err := logger.Sync(); err != nil {
-			fmt.Printf("Failed to sync logger: %v\n", err)
-		}
-		logger.Close()
-
-		if aclManager != nil {
-			aclManager.Stop()
-		}
-
-		utils.DisableColorMode()
-		fmt.Println("Futriis DB shutdown complete")
-
-		exitCode = 0
-		close(sigChan)
-	}()
-
-	if err := replInstance.Run(); err != nil {
-		logger.Error("REPL error: " + err.Error())
-		utils.PrintError("REPL error: " + err.Error())
-		exitCode = 1
-	}
-
-	time.Sleep(500 * time.Millisecond)
-
-	if exitCode != 0 {
-		os.Exit(exitCode)
-	}
-}
-
-// ==================== Адаптеры для metrics ====================
-
-type storageStatsAdapter struct {
-	s *storage.Storage
-}
-
-func newStorageStatsAdapter(s *storage.Storage) *storageStatsAdapter {
-	return &storageStatsAdapter{s: s}
-}
-
-func (a *storageStatsAdapter) GetStats() map[string]interface{} { return a.s.GetStats() }
-func (a *storageStatsAdapter) GetDatabaseCount() int            { return a.s.GetDatabaseCount() }
-func (a *storageStatsAdapter) GetTotalDocuments() int64         { return a.s.GetTotalDocuments() }
-
-type coordinatorStatsAdapter struct {
-	c *cluster.RaftCoordinator
-}
-
-func newCoordinatorStatsAdapter(c *cluster.RaftCoordinator) *coordinatorStatsAdapter {
-	return &coordinatorStatsAdapter{c: c}
-}
-
-func (a *coordinatorStatsAdapter) GetClusterStatus() metrics.ClusterStatusLike {
-	st := a.c.GetClusterStatus()
-	return &clusterStatusAdapter{st: st}
-}
-
-func (a *coordinatorStatsAdapter) GetActiveNodes() []metrics.NodeInfoLike {
-	nodes := a.c.GetActiveNodes()
-	out := make([]metrics.NodeInfoLike, 0, len(nodes))
-	for _, n := range nodes {
-		out = append(out, &nodeInfoAdapter{n: n})
-	}
-	return out
-}
-
-func (a *coordinatorStatsAdapter) GetAllNodes() []metrics.NodeInfoLike {
-	nodes := a.c.GetAllNodes()
-	out := make([]metrics.NodeInfoLike, 0, len(nodes))
-	for _, n := range nodes {
-		out = append(out, &nodeInfoAdapter{n: n})
-	}
-	return out
-}
-
-func (a *coordinatorStatsAdapter) IsLeader() bool         { return a.c.IsLeader() }
-func (a *coordinatorStatsAdapter) GetCurrentTerm() uint64 { return a.c.GetCurrentTerm() }
-
-type clusterStatusAdapter struct {
-	st *cluster.ClusterStatus
-}
-
-func (a *clusterStatusAdapter) GetTotalNodes() int  { return a.st.TotalNodes }
-func (a *clusterStatusAdapter) GetActiveNodes() int { return a.st.ActiveNodes }
-func (a *clusterStatusAdapter) GetFailedNodes() int { return a.st.FailedNodes }
-func (a *clusterStatusAdapter) GetLeaderID() string { return a.st.LeaderID }
-func (a *clusterStatusAdapter) GetHealth() string   { return a.st.Health }
-
-type nodeInfoAdapter struct {
-	n *cluster.NodeInfo
-}
-
-func (a *nodeInfoAdapter) GetID() string      { return a.n.ID }
-func (a *nodeInfoAdapter) GetIP() string      { return a.n.IP }
-func (a *nodeInfoAdapter) GetPort() int       { return a.n.Port }
-func (a *nodeInfoAdapter) GetStatus() string  { return a.n.Status }
-func (a *nodeInfoAdapter) GetLastSeen() int64 { return a.n.LastSeen }
-
-// ==================== Утилиты ====================
-
-func ensureDataDir() (string, error) {
-	dataDir := os.Getenv("FUTRIIS_DATA_DIR")
-	if dataDir == "" {
-		dataDir = defaultDataDir
-	}
-	absPath, err := filepath.Abs(dataDir)
-	if err != nil {
-		return "", fmt.Errorf("failed to resolve absolute path for %s: %w", dataDir, err)
-	}
-	if err := os.MkdirAll(absPath, 0755); err != nil {
-		return "", fmt.Errorf("failed to create data directory %s: %w", absPath, err)
-	}
-	testFile := filepath.Join(absPath, ".write_test")
-	if err := os.WriteFile(testFile, []byte("test"), 0600); err != nil {
-		return "", fmt.Errorf("data directory %s is not writable: %w", absPath, err)
-	}
-	_ = os.Remove(testFile)
-	return absPath, nil
-}
-
-func loadAndValidateConfig(path string) (*config.Config, error) {
-	info, err := os.Stat(path)
-	if err != nil {
-		if os.IsNotExist(err) {
-			return nil, fmt.Errorf("config file not found: %s", path)
-		}
-		return nil, fmt.Errorf("failed to stat config file: %w", err)
-	}
-	if info.Size() > maxConfigFileSize {
-		return nil, fmt.Errorf("config file too large: %d bytes (max %d)", info.Size(), maxConfigFileSize)
-	}
-	if !info.Mode().IsRegular() {
-		return nil, fmt.Errorf("config path is not a regular file: %s", path)
-	}
-	cfg, err := config.LoadConfig(path)
-	if err != nil {
-		return nil, fmt.Errorf("failed to parse config: %w", err)
-	}
-	if cfg == nil {
-		return nil, fmt.Errorf("config is nil after load")
-	}
-	if err := config.ValidateConfig(cfg); err != nil {
-		return nil, fmt.Errorf("config validation failed: %w", err)
-	}
-	return cfg, nil
-}
-
-func isPortListening(port int) bool {
-	if port <= 0 {
-		return false
-	}
-	conn, err := net.DialTimeout("tcp", fmt.Sprintf("127.0.0.1:%d", port), 200*time.Millisecond)
-	if err != nil {
-		return false
-	}
-	conn.Close()
-	return true
-}
-
-// displayBanner выводит стартовый баннер.
-//
-// ИСПРАВЛЕНО (UI): текст баннера окрашивается точным цветом
-// #00bfff (Deep Sky Blue) через utils.PrintlnDeepSkyBlueReset, чтобы
-// совпадать с цветом надписи "futriis 3i²(by 29.09.2026)".
-//
-// Внутри уже есть utils.Println("") первой строкой, чтобы отделить
-// баннер от ACL-сообщения. Дополнительные пустые строки в main() не
-// добавляются (см. комментарий перед вызовом displayBanner).
-func displayBanner(clusterName string, httpPort int, coordinator *cluster.RaftCoordinator, sagaEnabled, metricsEnabled bool) {
-	utils.Println("")
-	bannerLines := []string{
-		"                futriis 3i²(by 29.09.2026)                 ",
-		"                Distributed Document-Store in-memory database with support lua plugins   ",
-		"                Cluster status: enable (Raft consensus)",
-		"                Cluster features: Pipeline Replication, Batch Commit, Dynamic Resharding",
-		"                Cluster name: " + clusterName,
-		"                HTTP API (for curl or wget utils only): http://localhost:" + fmt.Sprintf("%d", httpPort) + "/api/",
-	}
-	if metricsEnabled {
-		bannerLines = append(bannerLines,
-			fmt.Sprintf("                Prometheus metrics: http://localhost:%d/metrics", httpPort),
-			"                Grafana: add Prometheus datasource pointing to /metrics URL",
-		)
-	}
-	bannerLines = append(bannerLines, "                Additional features:")
-	bannerLines = append(bannerLines, "                  - Single Point of Failure protection (Leader Fallback)")
-	bannerLines = append(bannerLines, "                  - Automatic Panic Recovery for goroutines")
-	bannerLines = append(bannerLines, "                  - Schema Migration support")
-	bannerLines = append(bannerLines, "                  - Full configuration validation")
-	bannerLines = append(bannerLines, "                  - Automatic data persistence")
-	if sagaEnabled {
-		bannerLines = append(bannerLines, "                  - SAGA Orchestrator: ENABLED (distributed transactions)")
-	} else {
-		bannerLines = append(bannerLines, "                  - SAGA Orchestrator: DISABLED")
-	}
-	if metricsEnabled {
-		bannerLines = append(bannerLines, "                  - Prometheus metrics: ENABLED")
-	} else {
-		bannerLines = append(bannerLines, "                  - Prometheus metrics: DISABLED")
-	}
-
-	bannerLines = append(bannerLines, []string{
-		"",
-		"                Type 'quit' or 'exit' to quit",
-		"                Type 'status' to see cluster status",
-		"                Type 'acl login <user> <pass>' to authenticate",
-		"                Type 'plugin list' to see loaded plugins",
-		"                Type 'cluster pipeline' to see pipeline stats",
-		"                Type 'cluster reshard' to trigger manual resharding",
-		"                Type 'migrate status' to see schema migration status",
-		"                Type 'fallback status' to see SPoF protection status",
-		"                Type 'panic stats' to see panic recovery statistics",
-		"                Type 'persist status' to see data persistence status",
-		"                Type 'saga status' to see SAGA orchestrator status",
-		"                Type 'saga list' to list active SAGA transactions",
-	}...)
-
-	for _, line := range bannerLines {
-		// ИСПРАВЛЕНО: используем точный цвет #00bfff (Deep Sky Blue),
-		// совпадающий с цветом заголовка баннера.
-		utils.PrintlnDeepSkyBlueReset(line)
-	}
-}
-
-func printJSON(data interface{}) {
-	jsonData, err := json.MarshalIndent(data, "", "  ")
-	if err != nil {
-		utils.PrintError("Failed to marshal JSON: " + err.Error())
-		return
-	}
-	fmt.Println(string(jsonData))
-}