在将lighthouse部署到生产服务器之前，我会检查安全性（https://www.howtographql.com/advanced/4-security/）。因此，我决定检查查询深度和查询复杂度。

在lighthouse文档中，他们提到了config/lighthouse.php。

/*
|--------------------------------------------------------------------------
| Security
|--------------------------------------------------------------------------
|
| 控制Lighthouse处理与安全相关的查询验证。
| 详细阅读：https://webonyx.github.io/graphql-php/security/
|
*/
'security' => [
    'max_query_complexity' => \GraphQL\Validator\Rules\QueryComplexity::DISABLED,
    'max_query_depth' => \GraphQL\Validator\Rules\QueryDepth::DISABLED,
    'disable_introspection' => \GraphQL\Validator\Rules\DisableIntrospection::DISABLED,
],

并且推荐阅读https://webonyx.github.io/graphql-php/security/。

在这个链接中，他们给出了一些示例：

use GraphQL\GraphQL;
use GraphQL\Validator\Rules\QueryComplexity;
use GraphQL\Validator\DocumentValidator;

$rule = new QueryComplexity($maxQueryComplexity = 100);
DocumentValidator::addRule($rule);

GraphQL::executeQuery(/*...*/);

use GraphQL\GraphQL;
use GraphQL\Validator\Rules\QueryDepth;
use GraphQL\Validator\DocumentValidator;

$rule = new QueryDepth($maxDepth = 10);
DocumentValidator::addRule($rule);

GraphQL::executeQuery(/*...*/);

但是如何在lighthouse中应用这些呢？

首先，我将这些代码写入了ExampleQuery.php（php artisan lighthouse:query ExampleQuery）。

final class ExampleQuery
{
    public function __invoke(_, array $args)
    {
        $rule = new QueryComplexity(2);
        DocumentValidator::addRule($rule);

        $rule2 = new QueryDepth(2);
        DocumentValidator::addRule($rule2);

        return [
            ...
        ];
    }
}

但是这样无法捕获任何问题。

我认为lighthouse在vendor/nuwave/.../GraphQLController.php中启动，所以我无法执行GraphQL::executeQuery(/*...*/);

@complexity指令也不起作用，@complexity(resolver: "App\\Security\\ComplexityAnalyzer@userPosts")不会调用userPosts函数。

class ComplexityAnalyzer {

    public function userPosts(int $childrenComplexity, array $args): int  // not called
    {
        $postComplexity = $args['includeFullText']
            ? 3
            : 2;
        \Log::Debug($postComplexity); // not called
        return $childrenComplexity * $postComplexity;

    }
}

我错过了什么？请帮助我睡个舒服觉。