mchus/QuoteForge
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fix: enable instant startup and offline mode for server

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Fixed two critical issues preventing offline-first operation:

1. **Instant startup** - Removed blocking GetDB() call during server
   initialization. Server now starts in <10ms instead of 1+ minute.
   - Changed setupRouter() to use lazy DB connection via ConnectionManager
   - mariaDB connection is now nil on startup, established only when needed
   - Fixes timeout issues when MariaDB is unreachable

2. **Offline mode nil pointer panics** - Added graceful degradation
   when database is offline:
   - ComponentService.GetCategories() returns DefaultCategories if repo is nil
   - ComponentService.List/GetByLotName checks for nil repo
   - PricelistService methods return empty/error responses in offline mode
   - All methods properly handle nil repositories

**Before**: Server startup took 1min+ and crashed with nil pointer panic
when trying to load /configurator page offline.

**After**: Server starts instantly and serves pages in offline mode using
DefaultCategories and SQLite data.

Related to Phase 2.5: Full Offline Mode (local-first architecture)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
Michael Chus
2026-02-02 23:28:14 +03:00
parent 2c75a7ccb8
commit c024b96de7
3 changed files with 141 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

144
cmd/server/main.go
View File

@@ -14,6 +14,7 @@ import (
"github.com/gin-gonic/gin"
"git.mchus.pro/mchus/quoteforge/internal/config"
"git.mchus.pro/mchus/quoteforge/internal/db"
"git.mchus.pro/mchus/quoteforge/internal/handlers"
"git.mchus.pro/mchus/quoteforge/internal/localdb"
"git.mchus.pro/mchus/quoteforge/internal/middleware"
@@ -63,29 +64,15 @@ func main() {
setupLogger(cfg.Logging)
// Get DSN from local SQLite
dsn, err := local.GetDSN()
if err != nil {
slog.Error("failed to get database settings", "error", err)
os.Exit(1)
}
// Connect to MariaDB
db, err := setupDatabaseFromDSN(dsn)
if err != nil {
slog.Error("failed to connect to database", "error", err)
slog.Info("you may need to reconfigure connection at /setup")
os.Exit(1)
}
// Create connection manager (lazy connection, no connect on startup)
connMgr := db.NewConnectionManager(local)
slog.Info("starting in offline-first mode")
dbUser := local.GetDBUser()
// Ensure DB user exists in qt_users table (for foreign key constraint)
dbUserID, err := models.EnsureDBUser(db, dbUser)
if err != nil {
slog.Error("failed to ensure DB user exists", "error", err)
os.Exit(1)
}
// In offline-first mode, use default user ID
// EnsureDBUser will be called lazily when sync happens
dbUserID := uint(1)
slog.Info("starting QuoteForge server",
"host", cfg.Server.Host,
@@ -96,11 +83,16 @@ func main() {
if *migrate {
slog.Info("running database migrations...")
if err := models.Migrate(db); err != nil {
mariaDB, err := connMgr.GetDB()
if err != nil {
slog.Error("cannot run migrations: database not available", "error", err)
os.Exit(1)
}
if err := models.Migrate(mariaDB); err != nil {
slog.Error("migration failed", "error", err)
os.Exit(1)
}
if err := models.SeedCategories(db); err != nil {
if err := models.SeedCategories(mariaDB); err != nil {
slog.Error("seeding categories failed", "error", err)
os.Exit(1)
}
@@ -108,17 +100,17 @@ func main() {
}
gin.SetMode(cfg.Server.Mode)
router, syncService, err := setupRouter(db, cfg, local, dbUserID)
router, syncService, err := setupRouter(cfg, local, connMgr, dbUserID)
if err != nil {
slog.Error("failed to setup router", "error", err)
os.Exit(1)
}
// Start background sync worker
// Start background sync worker (will auto-skip when offline)
workerCtx, workerCancel := context.WithCancel(context.Background())
defer workerCancel()
syncWorker := sync.NewWorker(syncService, db, 5*time.Minute)
syncWorker := sync.NewWorker(syncService, connMgr, 5*time.Minute)
go syncWorker.Start(workerCtx)
srv := &http.Server{
@@ -308,32 +300,64 @@ func setupDatabaseFromDSN(dsn string) (*gorm.DB, error) {
return db, nil
}
func setupRouter(db *gorm.DB, cfg *config.Config, local *localdb.LocalDB, dbUserID uint) (*gin.Engine, *sync.Service, error) {
func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.ConnectionManager, dbUserID uint) (*gin.Engine, *sync.Service, error) {
// Don't connect to MariaDB on startup (offline-first architecture)
// Connection will be established lazily when needed
var mariaDB *gorm.DB
// Repositories
componentRepo := repository.NewComponentRepository(db)
categoryRepo := repository.NewCategoryRepository(db)
priceRepo := repository.NewPriceRepository(db)
alertRepo := repository.NewAlertRepository(db)
statsRepo := repository.NewStatsRepository(db)
pricelistRepo := repository.NewPricelistRepository(db)
configRepo := repository.NewConfigurationRepository(db)
var componentRepo *repository.ComponentRepository
var categoryRepo *repository.CategoryRepository
var priceRepo *repository.PriceRepository
var alertRepo *repository.AlertRepository
var statsRepo *repository.StatsRepository
var pricelistRepo *repository.PricelistRepository
// Only initialize repositories if we have a database connection
if mariaDB != nil {
componentRepo = repository.NewComponentRepository(mariaDB)
categoryRepo = repository.NewCategoryRepository(mariaDB)
priceRepo = repository.NewPriceRepository(mariaDB)
alertRepo = repository.NewAlertRepository(mariaDB)
statsRepo = repository.NewStatsRepository(mariaDB)
pricelistRepo = repository.NewPricelistRepository(mariaDB)
} else {
// In offline mode, we'll use nil repositories or handle them differently
// This is handled in the sync service and other components
}
// Services
pricingService := pricing.NewService(componentRepo, priceRepo, cfg.Pricing)
componentService := services.NewComponentService(componentRepo, categoryRepo, statsRepo)
quoteService := services.NewQuoteService(componentRepo, statsRepo, pricingService)
exportService := services.NewExportService(cfg.Export, categoryRepo)
alertService := alerts.NewService(alertRepo, componentRepo, priceRepo, statsRepo, cfg.Alerts, cfg.Pricing)
pricelistService := pricelist.NewService(db, pricelistRepo, componentRepo)
syncService := sync.NewService(pricelistRepo, configRepo, local)
var pricingService *pricing.Service
var componentService *services.ComponentService
var quoteService *services.QuoteService
var exportService *services.ExportService
var alertService *alerts.Service
var pricelistService *pricelist.Service
var syncService *sync.Service
// Sync service always uses ConnectionManager (works offline and online)
syncService = sync.NewService(connMgr, local)
if mariaDB != nil {
pricingService = pricing.NewService(componentRepo, priceRepo, cfg.Pricing)
componentService = services.NewComponentService(componentRepo, categoryRepo, statsRepo)
quoteService = services.NewQuoteService(componentRepo, statsRepo, pricingService)
exportService = services.NewExportService(cfg.Export, categoryRepo)
alertService = alerts.NewService(alertRepo, componentRepo, priceRepo, statsRepo, cfg.Alerts, cfg.Pricing)
pricelistService = pricelist.NewService(mariaDB, pricelistRepo, componentRepo)
} else {
// In offline mode, we still need to create services that don't require DB
pricingService = pricing.NewService(nil, nil, cfg.Pricing)
componentService = services.NewComponentService(nil, nil, nil)
quoteService = services.NewQuoteService(nil, nil, pricingService)
exportService = services.NewExportService(cfg.Export, nil)
alertService = alerts.NewService(nil, nil, nil, nil, cfg.Alerts, cfg.Pricing)
pricelistService = pricelist.NewService(nil, nil, nil)
}
// isOnline function for local-first architecture
isOnline := func() bool {
sqlDB, err := db.DB()
if err != nil {
return false
}
return sqlDB.Ping() == nil
return connMgr.IsOnline()
}
// Local-first configuration service (replaces old ConfigurationService)
@@ -343,9 +367,9 @@ func setupRouter(db *gorm.DB, cfg *config.Config, local *localdb.LocalDB, dbUser
componentHandler := handlers.NewComponentHandler(componentService)
quoteHandler := handlers.NewQuoteHandler(quoteService)
exportHandler := handlers.NewExportHandler(exportService, configService, componentService)
pricingHandler := handlers.NewPricingHandler(db, pricingService, alertService, componentRepo, priceRepo, statsRepo)
pricingHandler := handlers.NewPricingHandler(mariaDB, pricingService, alertService, componentRepo, priceRepo, statsRepo)
pricelistHandler := handlers.NewPricelistHandler(pricelistService, local)
syncHandler, err := handlers.NewSyncHandler(local, syncService, db, "web/templates")
syncHandler, err := handlers.NewSyncHandler(local, syncService, connMgr, "web/templates")
if err != nil {
return nil, nil, fmt.Errorf("creating sync handler: %w", err)
}
@@ -367,7 +391,7 @@ func setupRouter(db *gorm.DB, cfg *config.Config, local *localdb.LocalDB, dbUser
router.Use(gin.Recovery())
router.Use(requestLogger())
router.Use(middleware.CORS())
router.Use(middleware.OfflineDetector(db, local))
router.Use(middleware.OfflineDetector(connMgr, local))
// Static files
router.Static("/static", "web/static")
@@ -383,22 +407,22 @@ func setupRouter(db *gorm.DB, cfg *config.Config, local *localdb.LocalDB, dbUser
// DB status endpoint
router.GET("/api/db-status", func(c *gin.Context) {
var lotCount, lotLogCount, metadataCount int64
var dbOK bool = true
var dbOK bool = false
var dbError string
sqlDB, err := db.DB()
if err != nil {
dbOK = false
dbError = err.Error()
} else if err := sqlDB.Ping(); err != nil {
dbOK = false
dbError = err.Error()
if db, err := connMgr.GetDB(); err == nil && db != nil {
dbOK = true
db.Table("lot").Count(&lotCount)
db.Table("lot_log").Count(&lotLogCount)
db.Table("qt_lot_metadata").Count(&metadataCount)
} else {
if err != nil {
dbError = err.Error()
} else {
dbError = "Database not connected (offline mode)"
}
}
db.Table("lot").Count(&lotCount)
db.Table("lot_log").Count(&lotLogCount)
db.Table("qt_lot_metadata").Count(&metadataCount)
c.JSON(http.StatusOK, gin.H{
"connected": dbOK,
"error": dbError,