get(self::key()) ?? Span::getInvalid(); } /** * @internal */ public static function store(ContextInterface $context, SpanInterface $span): ContextInterface { return $context->with(self::key(), $span); } /** * @internal * @return ContextKeyInterface */ public static function key(): ContextKeyInterface { static $key; return $key ??= Context::createKey(self::class); } /** * @internal */ public static function isLocalRoot(ContextInterface $parentContext): bool { $spanContext = Span::fromContext($parentContext)->getContext(); return !$spanContext->isValid() || $spanContext->isRemote(); } }