logger.go

func temporalLoggerHandler(logger log.Logger) slog.Handler {
	return slogmulti.NewHandleInlineHandler(
		func(ctx context.Context, groups []string, attrs []slog.Attr, record slog.Record) error {
			// Build message and attributes
			msg := record.Message

			// Convert attributes to keyvals format
			var keyvals []interface{}

			// Add provided attributes (from WithAttrs calls)
			for _, attr := range attrs {
				keyvals = append(keyvals, attr)
			}

			// Add record attributes
			record.Attrs(func(attr slog.Attr) bool {
				keyvals = append(keyvals, attr)
				return true
			})

			// Forward to appropriate method based on level
			switch {
			case record.Level <= slog.LevelDebug:
				logger.Debug(msg, keyvals...)
			case record.Level <= slog.LevelInfo:
				logger.Info(msg, keyvals...)
			case record.Level <= slog.LevelWarn:
				logger.Warn(msg, keyvals...)
			default:
				logger.Error(msg, keyvals...)
			}

			return nil
		},
	)
}