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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);
namespace Magento\GraphQlCache\Model;
use Magento\Framework\GraphQl\Config\Element\Field;
use Magento\Framework\App\RequestInterface;
use Magento\Framework\App\Request\Http;
use Magento\GraphQlCache\Model\Resolver\IdentityPool;
/**
* Handler of collecting tagging on cache.
*
* This class would be used to collect tags after each operation where we need to collect tags
* usually after data is fetched or resolved.
*/
class CacheableQueryHandler
{
/**
* @var CacheableQuery
*/
private $cacheableQuery;
/**
* @var RequestInterface
*/
private $request;
/**
* @var IdentityPool
*/
private $identityPool;
/**
* @param CacheableQuery $cacheableQuery
* @param RequestInterface $request
* @param IdentityPool $identityPool
*/
public function __construct(
CacheableQuery $cacheableQuery,
RequestInterface $request,
IdentityPool $identityPool
) {
$this->cacheableQuery = $cacheableQuery;
$this->request = $request;
$this->identityPool = $identityPool;
}
/**
* Set cache validity to the cacheableQuery after resolving any resolver or evaluating a promise in a query
*
* @param array $resolvedValue
* @param array $cacheAnnotation Eg: ['cacheable' => true, 'cacheTag' => 'someTag', cacheIdentity=>'\Mage\Class']
* @return void
*/
public function handleCacheFromResolverResponse(array $resolvedValue, array $cacheAnnotation) : void
{
$cacheable = $cacheAnnotation['cacheable'] ?? true;
$cacheIdentityClass = $cacheAnnotation['cacheIdentity'] ?? '';
if ($this->request instanceof Http && $this->request->isGet() && !empty($cacheIdentityClass)) {
$cacheIdentity = $this->identityPool->get($cacheIdentityClass);
$cacheTags = $cacheIdentity->getIdentities($resolvedValue);
$this->cacheableQuery->addCacheTags($cacheTags);
} else {
$cacheable = false;
}
$this->setCacheValidity($cacheable);
}
/**
* Set cache validity for the graphql request
*
* @param bool $isValid
* @return void
*/
private function setCacheValidity(bool $isValid): void
{
$cacheValidity = $this->cacheableQuery->isCacheable() && $isValid;
$this->cacheableQuery->setCacheValidity($cacheValidity);
}
}