feat: Keep-Alive correlation, TTL management, SIGHUP handling, logrotate support

Major features:
- One-to-many correlation mode (Keep-Alive) for HTTP connections
- Dynamic TTL for network events with reset on each correlation
- Separate configurable buffer sizes for HTTP and network events
- SIGHUP signal handling for log rotation without service restart
- FileSink.Reopen() method for log file rotation
- logrotate configuration included in RPM
- ExecReload added to systemd service

Configuration changes:
- New YAML structure with nested sections (time_window, orphan_policy, matching, buffers, ttl)
- Backward compatibility maintained for deprecated fields

Packaging:
- RPM version 1.1.0 with logrotate config
- Updated spec file and changelog
- All distributions: el8, el9, el10

Tests:
- New tests for Keep-Alive mode and TTL reset
- Updated mocks with Reopen() interface method

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

cmd/logcorrelator/main.go

@@ -105,10 +105,13 @@ func main() {
 
 	// Create correlation service
 	correlationSvc := domain.NewCorrelationService(domain.CorrelationConfig{
-		TimeWindow:       cfg.Correlation.GetTimeWindow(),
-		ApacheAlwaysEmit: cfg.Correlation.EmitOrphans,
-		NetworkEmit:      false,
-		MaxBufferSize:    domain.DefaultMaxBufferSize,
+		TimeWindow:         cfg.Correlation.GetTimeWindow(),
+		ApacheAlwaysEmit:   cfg.Correlation.GetApacheAlwaysEmit(),
+		NetworkEmit:        false,
+		MaxHTTPBufferSize:  cfg.Correlation.GetMaxHTTPBufferSize(),
+		MaxNetworkBufferSize: cfg.Correlation.GetMaxNetworkBufferSize(),
+		NetworkTTLS:        cfg.Correlation.GetNetworkTTLS(),
+		MatchingMode:       cfg.Correlation.GetMatchingMode(),
 	}, &domain.RealTimeProvider{})
 
 	// Set logger for correlation service
@@ -134,10 +137,26 @@ func main() {
 
 	// Wait for shutdown signal
 	sigChan := make(chan os.Signal, 1)
-	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
-	sig := <-sigChan
+	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM, syscall.SIGHUP)
 
-	logger.Info(fmt.Sprintf("Shutdown signal received: %v", sig))
+	for {
+		sig := <-sigChan
+
+		if sig == syscall.SIGHUP {
+			// Reopen file sinks for log rotation
+			logger.Info("SIGHUP received, reopening file sinks...")
+			if err := multiSink.Reopen(); err != nil {
+				logger.Error("Error reopening file sinks", err)
+			} else {
+				logger.Info("File sinks reopened successfully")
+			}
+			continue
+		}
+
+		// Shutdown signal received
+		logger.Info(fmt.Sprintf("Shutdown signal received: %v", sig))
+		break
+	}
 
 	// Graceful shutdown
 	if err := orchestrator.Stop(); err != nil {