Initial commit: Open sourcing all of the Maple Open Technologies code.

cloud/maplepress-backend/app/app.go

@@ -0,0 +1,108 @@
+package app
+
+import (
+	"context"
+
+	"go.uber.org/zap"
+
+	"codeberg.org/mapleopentech/monorepo/cloud/maplepress-backend/config"
+	"codeberg.org/mapleopentech/monorepo/cloud/maplepress-backend/internal/interface/http"
+	"codeberg.org/mapleopentech/monorepo/cloud/maplepress-backend/internal/scheduler"
+	"codeberg.org/mapleopentech/monorepo/cloud/maplepress-backend/pkg/leaderelection"
+)
+
+// Application represents the main application
+type Application struct {
+	cfg                *config.Config
+	logger             *zap.Logger
+	server             *http.Server
+	leaderElection     leaderelection.LeaderElection
+	quotaScheduler     *scheduler.QuotaResetScheduler
+	ipCleanupScheduler *scheduler.IPCleanupScheduler
+}
+
+// ProvideApplication creates a new Application
+func ProvideApplication(
+	cfg *config.Config,
+	logger *zap.Logger,
+	server *http.Server,
+	leaderElection leaderelection.LeaderElection,
+	quotaScheduler *scheduler.QuotaResetScheduler,
+	ipCleanupScheduler *scheduler.IPCleanupScheduler,
+) *Application {
+	return &Application{
+		cfg:                cfg,
+		logger:             logger,
+		server:             server,
+		leaderElection:     leaderElection,
+		quotaScheduler:     quotaScheduler,
+		ipCleanupScheduler: ipCleanupScheduler,
+	}
+}
+
+// Run starts the application
+func (a *Application) Run(ctx context.Context) error {
+	a.logger.Info("")
+	a.logger.Info("╔═══════════════════════════════════════════════╗")
+	a.logger.Info("║        MaplePress Backend Starting...        ║")
+	a.logger.Info("╚═══════════════════════════════════════════════╝")
+	a.logger.Info("",
+		zap.String("environment", a.cfg.App.Environment),
+		zap.String("version", a.cfg.App.Version))
+	a.logger.Info("")
+
+	// Start leader election in background if enabled
+	if a.cfg.LeaderElection.Enabled {
+		go func() {
+			a.logger.Info("starting leader election")
+			if err := a.leaderElection.Start(ctx); err != nil {
+				a.logger.Error("leader election stopped", zap.Error(err))
+			}
+		}()
+	} else {
+		a.logger.Warn("leader election is DISABLED - all schedulers will run on every instance")
+	}
+
+	// Start quota reset scheduler
+	if err := a.quotaScheduler.Start(); err != nil {
+		a.logger.Error("failed to start quota scheduler", zap.Error(err))
+		return err
+	}
+
+	// Start IP cleanup scheduler for GDPR compliance
+	if err := a.ipCleanupScheduler.Start(); err != nil {
+		a.logger.Error("failed to start IP cleanup scheduler", zap.Error(err))
+		return err
+	}
+
+	return a.server.Start()
+}
+
+// Shutdown gracefully shuts down the application
+func (a *Application) Shutdown(ctx context.Context) error {
+	a.logger.Info("shutting down MaplePress Backend")
+
+	// Stop leader election first if enabled
+	if a.cfg.LeaderElection.Enabled {
+		a.logger.Info("stopping leader election")
+		if err := a.leaderElection.Stop(); err != nil {
+			a.logger.Error("failed to stop leader election", zap.Error(err))
+		}
+	}
+
+	// Stop quota scheduler
+	a.quotaScheduler.Stop()
+
+	// Stop IP cleanup scheduler
+	a.ipCleanupScheduler.Stop()
+
+	if err := a.server.Shutdown(ctx); err != nil {
+		a.logger.Error("failed to shutdown server", zap.Error(err))
+		return err
+	}
+
+	// Sync logger before exit
+	a.logger.Sync()
+
+	return nil
+}