Add an auto-cleanup worker

internal/app/cleanup.go

@@ -0,0 +1,108 @@
+// This file is part of the happyDeliver (R) project.
+// Copyright (c) 2025 happyDomain
+// Authors: Pierre-Olivier Mercier, et al.
+//
+// This program is offered under a commercial and under the AGPL license.
+// For commercial licensing, contact us at <contact@happydomain.org>.
+//
+// For AGPL licensing:
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package app
+
+import (
+	"context"
+	"log"
+	"time"
+
+	"git.happydns.org/happyDeliver/internal/storage"
+)
+
+const (
+	// How often to run the cleanup check
+	cleanupInterval = 1 * time.Hour
+)
+
+// CleanupService handles periodic cleanup of old reports
+type CleanupService struct {
+	store     storage.Storage
+	retention time.Duration
+	ticker    *time.Ticker
+	done      chan struct{}
+}
+
+// NewCleanupService creates a new cleanup service
+func NewCleanupService(store storage.Storage, retention time.Duration) *CleanupService {
+	return &CleanupService{
+		store:     store,
+		retention: retention,
+		done:      make(chan struct{}),
+	}
+}
+
+// Start begins the cleanup service in a background goroutine
+func (s *CleanupService) Start(ctx context.Context) {
+	if s.retention <= 0 {
+		log.Println("Report retention is disabled (keeping reports forever)")
+		return
+	}
+
+	log.Printf("Starting cleanup service: will delete reports older than %s", s.retention)
+
+	// Run cleanup immediately on startup
+	s.runCleanup()
+
+	// Then run periodically
+	s.ticker = time.NewTicker(cleanupInterval)
+
+	go func() {
+		for {
+			select {
+			case <-s.ticker.C:
+				s.runCleanup()
+			case <-ctx.Done():
+				s.Stop()
+				return
+			case <-s.done:
+				return
+			}
+		}
+	}()
+}
+
+// Stop stops the cleanup service
+func (s *CleanupService) Stop() {
+	if s.ticker != nil {
+		s.ticker.Stop()
+	}
+	close(s.done)
+}
+
+// runCleanup performs the actual cleanup operation
+func (s *CleanupService) runCleanup() {
+	cutoffTime := time.Now().Add(-s.retention)
+	log.Printf("Running cleanup: deleting reports older than %s", cutoffTime.Format(time.RFC3339))
+
+	deleted, err := s.store.DeleteOldReports(cutoffTime)
+	if err != nil {
+		log.Printf("Error during cleanup: %v", err)
+		return
+	}
+
+	if deleted > 0 {
+		log.Printf("Cleanup completed: deleted %d old report(s)", deleted)
+	} else {
+		log.Printf("Cleanup completed: no old reports to delete")
+	}
+}

internal/app/server.go

@@ -22,6 +22,7 @@
 package app
 
 import (
+	"context"
 	"log"
 	"os"
 
@@ -49,6 +50,12 @@ func RunServer(cfg *config.Config) error {
 
 	log.Printf("Connected to %s database", cfg.Database.Type)
 
+	// Start cleanup service for old reports
+	ctx := context.Background()
+	cleanupSvc := NewCleanupService(store, cfg.ReportRetention)
+	cleanupSvc.Start(ctx)
+	defer cleanupSvc.Stop()
+
 	// Start LMTP server in background
 	go func() {
 		if err := lmtp.StartServer(cfg.Email.LMTPAddr, store, cfg); err != nil {