#40226 - Conditionally add salesrule attributes to eav query during quote load

app/code/Magento/SalesRule/Model/Plugin/FrontController.php

@@ -0,0 +1,37 @@
+<?php
+/**
+ * Copyright 2025 Adobe
+ * All Rights Reserved.
+ */
+declare(strict_types=1);
+
+namespace Magento\SalesRule\Model\Plugin;
+
+class FrontController
+{
+    /**
+     * @param RequestTypeRegistry          $requestTypeRegistry
+     */
+    public function __construct(
+        private RequestTypeRegistry $requestTypeRegistry
+    ) {
+    }
+
+    /**
+     * Identify the Request Type and set true if it is a GET request
+     *
+     * @param \Magento\Framework\App\FrontControllerInterface $subject
+     * @param \Magento\Framework\App\RequestInterface $request
+     * @return void
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+     */
+    public function beforeDispatch(
+        \Magento\Framework\App\FrontControllerInterface $subject,
+        \Magento\Framework\App\RequestInterface $request
+    ) {
+        $method = strtoupper($request->getMethod());
+        $isReadOnly = ($method === 'GET');
+
+        $this->requestTypeRegistry->setIsGetRequestOrQuery($isReadOnly);
+    }
+}

app/code/Magento/SalesRule/Model/Plugin/GraphQlController.php

@@ -0,0 +1,38 @@
+<?php
+/**
+ * Copyright 2025 Adobe
+ * All Rights Reserved.
+ */
+declare(strict_types=1);
+
+namespace Magento\SalesRule\Model\Plugin;
+
+use Magento\Framework\App\ResponseInterface;
+use Magento\Framework\App\FrontControllerInterface;
+
+class GraphQlController
+{
+    /**
+     * @param RequestTypeRegistry          $requestTypeRegistry
+     */
+    public function __construct(
+        private RequestTypeRegistry $requestTypeRegistry
+    ) {
+    }
+
+    /**
+     * Reset request type registry after dispatching GraphQL controller
+     *
+     * @param FrontControllerInterface $subject
+     * @param ResponseInterface $result
+     * @return ResponseInterface $result
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+     */
+    public function afterDispatch(
+        FrontControllerInterface $subject,
+        ResponseInterface $result
+    ) : ResponseInterface {
+        $this->requestTypeRegistry->reset();
+        return $result;
+    }
+}

app/code/Magento/SalesRule/Model/Plugin/QueryParser.php

@@ -0,0 +1,47 @@
+<?php
+/**
+ * Copyright 2025 Adobe
+ * All Rights Reserved.
+ */
+declare(strict_types=1);
+
+namespace Magento\SalesRule\Model\Plugin;
+
+class QueryParser
+{
+
+    /**
+     * @param RequestTypeRegistry          $requestTypeRegistry
+     */
+    public function __construct(
+        private RequestTypeRegistry $requestTypeRegistry
+    ) {
+    }
+
+    /**
+     * Set QueryType to RequestTypeRegistry
+     *
+     * @param \Magento\Framework\GraphQl\Query\QueryParser $subject
+     * @param \GraphQL\Language\AST\DocumentNode $documentNode
+     * @return \GraphQL\Language\AST\DocumentNode $documentNode
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+     */
+    public function afterParse(\Magento\Framework\GraphQl\Query\QueryParser $subject, $documentNode)
+    {
+        // Get the first operation definition
+        $operation = null;
+        foreach ($documentNode->definitions as $definition) {
+            if ($definition instanceof \GraphQL\Language\AST\OperationDefinitionNode) {
+                $operation = $definition;
+                break;
+            }
+        }
+
+        if ($operation) {
+            $isOperationTypeQuery = ($operation->operation === 'query');
+            $this->requestTypeRegistry->setIsGetRequestOrQuery($isOperationTypeQuery);
+        }
+
+        return $documentNode;
+    }
+}

app/code/Magento/SalesRule/Model/Plugin/QuoteConfigProductAttributes.php

@@ -1,12 +1,16 @@
 <?php
 /**
- * Copyright 2013 Adobe
+ * Copyright 2025 Adobe
  * All Rights Reserved.
  */
+declare(strict_types=1);
 
 namespace Magento\SalesRule\Model\Plugin;
 
+use Magento\Framework\App\CacheInterface;
+use Magento\Framework\Serialize\SerializerInterface;
 use Magento\Quote\Model\Quote\Config;
+use Magento\Quote\Model\Quote;
 use Magento\SalesRule\Model\ResourceModel\Rule as RuleResource;
 
 class QuoteConfigProductAttributes
@@ -21,11 +25,28 @@ class QuoteConfigProductAttributes
      */
     private $activeAttributeCodes;
 
+    /**
+     * Cache key for active salesrule attributes
+     */
+    private const CACHE_KEY = 'salesrule_active_product_attributes';
+
+    /**
+     * Cache tag for salesrule attributes
+     */
+    private const CACHE_TAG = 'salesrule';
+
     /**
      * @param RuleResource $ruleResource
+     * @param RequestTypeRegistry $requestTypeRegistry
+     * @param CacheInterface $cache
+     * @param SerializerInterface $serializer
      */
-    public function __construct(RuleResource $ruleResource)
-    {
+    public function __construct(
+        RuleResource $ruleResource,
+        private RequestTypeRegistry $requestTypeRegistry,
+        private CacheInterface $cache,
+        private SerializerInterface $serializer
+    ) {
         $this->ruleResource = $ruleResource;
     }
 
@@ -40,8 +61,24 @@ public function __construct(RuleResource $ruleResource)
      */
     public function afterGetProductAttributes(Config $subject, array $attributeKeys): array
     {
-        if ($this->activeAttributeCodes === null) {
-            $this->activeAttributeCodes = array_column($this->ruleResource->getActiveAttributes(), 'attribute_code');
+        if ($this->requestTypeRegistry->isGetRequestOrQuery()) {
+            return $attributeKeys;
+        }
+
+        $cachedData = $this->cache->load(self::CACHE_KEY);
+
+        if ($cachedData !== false) {
+            $this->activeAttributeCodes = $this->serializer->unserialize($cachedData);
+        } else {
+            $this->activeAttributeCodes = array_column(
+                $this->ruleResource->getActiveAttributes(),
+                'attribute_code'
+            );
+            $this->cache->save(
+                $this->serializer->serialize($this->activeAttributeCodes),
+                self::CACHE_KEY,
+                [self::CACHE_TAG]
+            );
         }
 
         return array_merge($attributeKeys, $this->activeAttributeCodes);

app/code/Magento/SalesRule/Model/Plugin/QuoteItemCollection.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * Copyright 2025 Adobe
+ * All Rights Reserved.
+ */
+declare(strict_types=1);
+
+namespace Magento\SalesRule\Model\Plugin;
+
+class QuoteItemCollection
+{
+    /**
+     * @param RequestTypeRegistry     $requestTypeRegistry
+     */
+    public function __construct(
+        private RequestTypeRegistry $requestTypeRegistry
+    ) {
+    }
+
+    /**
+     * Set the Request Type before setting the quote in the Quote Item Collection.
+     *
+     * @param \Magento\Quote\Model\ResourceModel\Quote\Item\Collection $subject The collection instance.
+     * @param \Magento\Quote\Model\Quote $quote The quote to be processed.
+     * @return void
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+     */
+    public function beforeSetQuote(
+        \Magento\Quote\Model\ResourceModel\Quote\Item\Collection $subject,
+        \Magento\Quote\Model\Quote $quote
+    ) {
+        if ($quote->getTriggerRecollect() == 1 && $this->requestTypeRegistry->isGetRequestOrQuery()) {
+            $this->requestTypeRegistry->setIsGetRequestOrQuery(false);
+        }
+    }
+}

app/code/Magento/SalesRule/Model/Plugin/RequestTypeRegistry.php

@@ -0,0 +1,53 @@
+<?php
+/**
+ * Copyright 2025 Adobe
+ * All Rights Reserved.
+ */
+declare(strict_types=1);
+
+namespace Magento\SalesRule\Model\Plugin;
+
+/**
+ * Tracks whether the request is http post or mutation
+ *
+ * This class is used to optimize performance by only loading salesrule product attributes
+ * when they're actually needed during totals collection, rather than on every quote load.
+ */
+class RequestTypeRegistry
+{
+    /**
+     * @var bool
+     */
+    private $isGetRequestOrQuery= false;
+
+    /**
+     * Set Request state
+     *
+     * @param bool $state
+     * @return void
+     */
+    public function setIsGetRequestOrQuery(bool $state): void
+    {
+        $this->isGetRequestOrQuery = $state;
+    }
+
+    /**
+     * Check if request is a get or query
+     *
+     * @return bool
+     */
+    public function isGetRequestOrQuery(): bool
+    {
+        return $this->isGetRequestOrQuery;
+    }
+
+    /**
+     * Resets the state of the object by setting the isGetRequestOrQuery property to false.
+     *
+     * @return void
+     */
+    public function reset(): void
+    {
+        $this->isGetRequestOrQuery = false;
+    }
+}

app/code/Magento/SalesRule/Test/Unit/Model/Plugin/FrontControllerTest.php

@@ -0,0 +1,72 @@
+<?php
+/**
+ * Copyright 2025 Adobe
+ * All Rights Reserved.
+ */
+declare(strict_types=1);
+
+namespace Magento\SalesRule\Test\Unit\Model\Plugin;
+
+use Magento\Framework\App\FrontControllerInterface;
+use Magento\Framework\App\RequestInterface;
+use Magento\SalesRule\Model\Plugin\FrontController;
+use Magento\SalesRule\Model\Plugin\RequestTypeRegistry;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+
+class FrontControllerTest extends TestCase
+{
+    /** @var RequestTypeRegistry|MockObject */
+    private $requestTypeRegistry;
+
+    /** @var FrontController */
+    private $plugin;
+
+    protected function setUp(): void
+    {
+        $this->requestTypeRegistry = $this->createMock(RequestTypeRegistry::class);
+        $this->plugin = new FrontController($this->requestTypeRegistry);
+    }
+
+    public function testBeforeDispatchSetsTrueForGetRequests(): void
+    {
+        $subject = $this->createMock(FrontControllerInterface::class);
+        $request = $this->createMock(RequestInterface::class);
+        $request->method('getMethod')->willReturn('GET');
+
+        $this->requestTypeRegistry
+            ->expects($this->once())
+            ->method('setIsGetRequestOrQuery')
+            ->with(true);
+
+        $this->plugin->beforeDispatch($subject, $request);
+    }
+
+    public function testBeforeDispatchSetsFalseForPostRequests(): void
+    {
+        $subject = $this->createMock(FrontControllerInterface::class);
+        $request = $this->createMock(RequestInterface::class);
+        $request->method('getMethod')->willReturn('POST');
+
+        $this->requestTypeRegistry
+            ->expects($this->once())
+            ->method('setIsGetRequestOrQuery')
+            ->with(false);
+
+        $this->plugin->beforeDispatch($subject, $request);
+    }
+
+    public function testBeforeDispatchIsCaseInsensitive(): void
+    {
+        $subject = $this->createMock(FrontControllerInterface::class);
+        $request = $this->createMock(RequestInterface::class);
+        $request->method('getMethod')->willReturn('get'); // lowercase
+
+        $this->requestTypeRegistry
+            ->expects($this->once())
+            ->method('setIsGetRequestOrQuery')
+            ->with(true);
+
+        $this->plugin->beforeDispatch($subject, $request);
+    }
+}