snapshot of https://github.com/livekit/livekit.git @ 08c5433449c106943231037d0b892895f6e92d3b (2026-09-15)

pkg/config/configtest/checkyamltag.go

@@ -0,0 +1,69 @@
+package configtest
+
+import (
+	"fmt"
+	"reflect"
+	"slices"
+	"strings"
+
+	"go.uber.org/multierr"
+	"google.golang.org/protobuf/proto"
+)
+
+var protoMessageType = reflect.TypeOf((*proto.Message)(nil)).Elem()
+
+func checkYAMLTags(t reflect.Type, seen map[reflect.Type]struct{}) error {
+	if _, ok := seen[t]; ok {
+		return nil
+	}
+	seen[t] = struct{}{}
+
+	switch t.Kind() {
+	case reflect.Array, reflect.Map, reflect.Slice, reflect.Pointer:
+		return checkYAMLTags(t.Elem(), seen)
+	case reflect.Struct:
+		if reflect.PointerTo(t).Implements(protoMessageType) {
+			// ignore protobuf messages
+			return nil
+		}
+
+		var errs error
+		for i := 0; i < t.NumField(); i++ {
+			field := t.Field(i)
+
+			if !field.IsExported() {
+				// ignore unexported fields
+				continue
+			}
+
+			if field.Type.Kind() == reflect.Bool {
+				// ignore boolean fields
+				continue
+			}
+
+			if field.Tag.Get("config") == "allowempty" {
+				// ignore configured exceptions
+				continue
+			}
+
+			parts := strings.Split(field.Tag.Get("yaml"), ",")
+			if parts[0] == "-" {
+				// ignore unparsed fields
+				continue
+			}
+
+			if !slices.Contains(parts, "omitempty") && !slices.Contains(parts, "inline") {
+				errs = multierr.Append(errs, fmt.Errorf("%s/%s.%s missing omitempty tag", t.PkgPath(), t.Name(), field.Name))
+			}
+
+			errs = multierr.Append(errs, checkYAMLTags(field.Type, seen))
+		}
+		return errs
+	default:
+		return nil
+	}
+}
+
+func CheckYAMLTags(config any) error {
+	return checkYAMLTags(reflect.TypeOf(config), map[reflect.Type]struct{}{})
+}