initial commit

Author: danslo

Model/Cache/Identity/Introspection/ProductAttributeFilterInput.php

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+<?php
+
+namespace Graycore\GraphQlIntrospectionCache\Model\Cache\Identity\Introspection;
+
+use Magento\Catalog\Model\Product;
+use Magento\Eav\Api\AttributeRepositoryInterface;
+use Magento\Eav\Api\Data\AttributeInterface;
+use Magento\Eav\Model\Entity\Attribute;
+use Magento\Framework\Api\SearchCriteriaBuilder;
+use Magento\Framework\GraphQl\Query\Resolver\IdentityInterface;
+
+class ProductAttributeFilterInput implements IdentityInterface
+{
+    private AttributeRepositoryInterface $attributeRepository;
+    private SearchCriteriaBuilder $searchCriteriaBuilder;
+
+    public function __construct(
+        AttributeRepositoryInterface $attributeRepository,
+        SearchCriteriaBuilder $searchCriteriaBuilder
+    ) {
+        $this->attributeRepository = $attributeRepository;
+        $this->searchCriteriaBuilder = $searchCriteriaBuilder;
+    }
+
+    public function getIdentities(array $resolvedData): array
+    {
+        return array_map(
+            fn($attribute) => Attribute::CACHE_TAG . '_' . $attribute->getAttributeId(),
+            $this->attributeRepository->getList(
+                Product::ENTITY,
+                $this->searchCriteriaBuilder->addFilter(
+                    AttributeInterface::ATTRIBUTE_CODE,
+                    array_map(fn($attribute) => $attribute['name'], $resolvedData['__type']['inputFields'] ?? []),
+                    'in'
+                )->create()
+            )->getItems()
+        );
+    }
+}

Plugin/CachePlugin.php

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+<?php
+
+namespace Graycore\GraphQlIntrospectionCache\Plugin;
+
+use Closure;
+use GraphQL\Executor\Promise\Adapter\SyncPromiseAdapter;
+use GraphQL\Executor\Promise\Promise;
+use GraphQL\Executor\ReferenceExecutor;
+use Magento\Framework\GraphQl\Query\Resolver\IdentityInterface;
+use Magento\GraphQlCache\Model\CacheableQuery;
+
+class CachePlugin
+{
+    private CacheableQuery $cacheableQuery;
+    private SyncPromiseAdapter $syncPromiseAdapter;
+    private array $introspectionHandlers;
+
+    public function __construct(
+        CacheableQuery $cacheableQuery,
+        SyncPromiseAdapter $syncPromiseAdapter,
+        array $introspectionHandlers = []
+    ) {
+        $this->cacheableQuery = $cacheableQuery;
+        $this->syncPromiseAdapter = $syncPromiseAdapter;
+        $this->introspectionHandlers = $introspectionHandlers;
+    }
+
+    public function afterDoExecute(ReferenceExecutor $subject, Promise $result): Promise
+    {
+        $executionContext = (Closure::bind(fn() => $this->exeContext, $subject, ReferenceExecutor::class))();
+        if ($executionContext === null) {
+            return $result;
+        }
+
+        foreach ($executionContext->operation->selectionSet->selections as $selection) {
+            if ($selection->name->value !== '__type') {
+                continue;
+            }
+
+            foreach ($selection->arguments as $argument) {
+                if ($argument->name->value !== 'name' || !isset($this->introspectionHandlers[$argument->value->value])) {
+                    continue;
+                }
+
+                $cacheIdentity = $this->introspectionHandlers[$argument->value->value];
+                if ($cacheIdentity instanceof IdentityInterface) {
+                    $this->cacheableQuery->addCacheTags(
+                        $cacheIdentity->getIdentities($this->syncPromiseAdapter->wait($result)->data)
+                    );
+                }
+            }
+        }
+
+        return $result;
+    }
+}

Plugin/SetExecutorPlugin.php

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+<?php
+
+namespace Graycore\GraphQlIntrospectionCache\Plugin;
+
+use Closure;
+use GraphQL\Executor\Executor;
+use GraphQL\Executor\ReferenceExecutor;
+use Magento\Framework\GraphQl\Query\QueryProcessor;
+use Magento\Framework\ObjectManagerInterface;
+
+class SetExecutorPlugin
+{
+    private ObjectManagerInterface $objectManager;
+
+    public function __construct(ObjectManagerInterface $objectManager)
+    {
+        $this->objectManager = $objectManager;
+    }
+
+    /**
+     * Before processing a GraphQL query, replace the factory with a wrapper that uses the object manager.
+     * This allows us to create plugins on the ReferenceExecutor.
+     */
+    public function beforeProcess(
+        QueryProcessor $subject,
+        ...$args
+    ): array {
+        Executor::setImplementationFactory(
+            fn(
+                $promiseAdapter,
+                $schema,
+                $documentNode,
+                $rootValue,
+                $contextValue,
+                $variableValues,
+                $operationName,
+                $fieldResolver
+            ) => $this->objectManager->create(
+                ReferenceExecutor::class,
+                [
+                    'context' => Closure::bind(
+                        fn() => ReferenceExecutor::buildExecutionContext(
+                            $schema,
+                            $documentNode,
+                            $rootValue,
+                            $contextValue,
+                            $variableValues,
+                            $operationName,
+                            $fieldResolver,
+                            $promiseAdapter
+                        ),
+                        null,
+                        ReferenceExecutor::class
+                    )()
+                ]
+            )
+        );
+        return $args;
+    }
+}

README.md

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+# Magento 2 GraphQL Introspection Cache
+
+## License
+
+Copyright 2022 Graycore, LLC
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+

composer.json

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+{
+    "name": "graycore/magento2-graphql-introspection-cache",
+    "type": "magento2-module",
+    "require": {
+        "magento/framework": "*",
+        "php": ">=7.4"
+    },
+    "license": [
+        "MIT"
+    ],
+    "autoload": {
+        "files": [
+            "registration.php"
+        ],
+        "psr-4": {
+            "Graycore\\GraphQlIntrospectionCache\\": ""
+        }
+    }
+}

etc/di.xml

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+<?xml version="1.0"?>
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
+    <type name="GraphQL\Executor\ReferenceExecutor">
+        <plugin name="cache_plugin"
+                type="Graycore\GraphQlIntrospectionCache\Plugin\CachePlugin"/>
+    </type>
+    <type name="Magento\Framework\GraphQl\Query\QueryProcessor">
+        <plugin name="set_executor_plugin"
+                type="Graycore\GraphQlIntrospectionCache\Plugin\SetExecutorPlugin"/>
+    </type>
+    <type name="Graycore\GraphQlIntrospectionCache\Plugin\CachePlugin">
+        <arguments>
+            <argument xsi:type="array" name="introspectionHandlers">
+                <item xsi:type="object" name="ProductAttributeFilterInput">Graycore\GraphQlIntrospectionCache\Model\Cache\Identity\Introspection\ProductAttributeFilterInput</item>
+            </argument>
+        </arguments>
+    </type>
+</config>

etc/module.xml

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+<?xml version="1.0"?>
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
+    <module name="Graycore_GraphQlIntrospectionCache">
+        <sequence>
+            <module name="Magento_Catalog"/>
+            <module name="Magento_Eav"/>
+            <module name="Magento_GraphQlCache"/>
+            <module name="Magento_GraphQl"/>
+        </sequence>
+    </module>
+</config>

registration.php

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+<?php
+
+use Magento\Framework\Component\ComponentRegistrar;
+
+ComponentRegistrar::register(ComponentRegistrar::MODULE, 'Graycore_GraphQlIntrospectionCache', __DIR__);