Refine requests log filter controls

internal/service/service.go

@@ -9,6 +9,7 @@ import (
 	"log"
 	"net"
 	"os"
+	"sort"
 	"strings"
 	"sync"
 	"syscall"
@@ -113,6 +114,27 @@ func (s *Service) ListEvents(ctx context.Context, since time.Time, limit int, op
 	return items, nil
 }
 
+func (s *Service) ListSourceNames() []string {
+	if s == nil || s.cfg == nil || len(s.cfg.Sources) == 0 {
+		return nil
+	}
+	seen := make(map[string]struct{}, len(s.cfg.Sources))
+	items := make([]string, 0, len(s.cfg.Sources))
+	for _, source := range s.cfg.Sources {
+		name := strings.TrimSpace(source.Name)
+		if name == "" {
+			continue
+		}
+		if _, ok := seen[name]; ok {
+			continue
+		}
+		seen[name] = struct{}{}
+		items = append(items, name)
+	}
+	sort.Strings(items)
+	return items
+}
+
 func (s *Service) ListIPs(ctx context.Context, limit int, state string) ([]model.IPState, error) {
 	return s.store.ListIPStates(ctx, limit, state)
 }