B2B-2257: availableStores GraphQl query has no cache identity

Author: joanhe

app/code/Magento/StoreGraphQl/Model/Resolver/Stores/ConfigIdentity.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\StoreGraphQl\Model\Resolver\Stores;
+
+use Magento\Framework\GraphQl\Query\Resolver\IdentityInterface;
+use Magento\StoreGraphQl\Model\Resolver\Store\ConfigIdentity as StoreConfigIdentity;
+
+class ConfigIdentity implements IdentityInterface
+{
+    /**
+     * @inheritDoc
+     */
+    public function getIdentities(array $resolvedData): array
+    {
+        $ids = [];
+        foreach ($resolvedData as $storeConfig) {
+            $ids[] = sprintf('%s_%s', StoreConfigIdentity::CACHE_TAG, $storeConfig['id']);
+        }
+
+        return empty($ids) ? [] : array_merge([StoreConfigIdentity::CACHE_TAG], $ids);
+    }
+}

app/code/Magento/StoreGraphQl/etc/schema.graphqls

@@ -4,7 +4,7 @@ type Query {
     storeConfig : StoreConfig @resolver(class: "Magento\\StoreGraphQl\\Model\\Resolver\\StoreConfigResolver") @doc(description: "Return details about the store's configuration.") @cache(cacheIdentity: "Magento\\StoreGraphQl\\Model\\Resolver\\Store\\ConfigIdentity")
     availableStores(
         useCurrentGroup: Boolean @doc(description: "Filter store views by the current store group.")
-    ): [StoreConfig] @resolver(class: "Magento\\StoreGraphQl\\Model\\Resolver\\AvailableStoresResolver") @doc(description: "Get a list of available store views and their config information.")
+    ): [StoreConfig] @resolver(class: "Magento\\StoreGraphQl\\Model\\Resolver\\AvailableStoresResolver") @doc(description: "Get a list of available store views and their config information.") @cache(cacheIdentity: "Magento\\StoreGraphQl\\Model\\Resolver\\Stores\\ConfigIdentity")
 }
 
 type Website @doc(description: "Deprecated. It should not be used on the storefront. Contains information about a website.") {