spawnia
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<?php
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namespace Nuwave\Lighthouse\Tracing; |
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use Closure; |
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use GraphQL\Type\Definition\ResolveInfo; |
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use Nuwave\Lighthouse\Execution\Resolved; |
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use Nuwave\Lighthouse\Schema\Directives\BaseDirective; |
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use Nuwave\Lighthouse\Schema\Values\FieldValue; |
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use Nuwave\Lighthouse\Support\Contracts\FieldMiddleware; |
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use Nuwave\Lighthouse\Support\Contracts\GraphQLContext; |
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class TracingDirective extends BaseDirective implements FieldMiddleware |
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{
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/**
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* @var \Nuwave\Lighthouse\Tracing\Tracing
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*/
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protected $tracing; |
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public function __construct(Tracing $tracing) |
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{
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$this->tracing = $tracing; |
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}
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public static function definition(): string |
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{
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return /** @lang GraphQL */ <<<'GRAPHQL' |
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"""
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Do not use this directive directly, it is automatically added to the schema
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when using the tracing extension.
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"""
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directive @tracing on FIELD_DEFINITION
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GRAPHQL; |
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}
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public function handleField(FieldValue $fieldValue, Closure $next): FieldValue |
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{
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// Make sure this middleware is applied last
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$fieldValue = $next($fieldValue); |
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$previousResolver = $fieldValue->getResolver(); |
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$fieldValue->setResolver(function ($root, array $args, GraphQLContext $context, ResolveInfo $resolveInfo) use ($previousResolver) { |
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$start = $this->tracing->getTime(); |
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$result = $previousResolver($root, $args, $context, $resolveInfo); |
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$end = $this->tracing->getTime(); |
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Resolved::handle($result, function () use ($resolveInfo, $start, $end): void { |
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$this->tracing->record($resolveInfo, $start, $end); |
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});
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return $result; |
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});
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return $fieldValue; |
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}
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}
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