<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/

namespace Magento\Framework\Acl\AclResource;

use Magento\Framework\App\ObjectManager;
use Magento\Framework\Serialize\Serializer\Json;

class Provider implements ProviderInterface
{
/**
* Cache key for ACL roles cache
*/
const ACL_RESOURCES_CACHE_KEY = 'provider_acl_resources_cache';

/**
* @var \Magento\Framework\Config\ReaderInterface
*/
protected $_configReader;

/**
* @var TreeBuilder
*/
protected $_resourceTreeBuilder;

/**
* @var \Magento\Framework\Acl\Data\CacheInterface
*/
private $aclDataCache;

/**
* @var Json
*/
private $serializer;

/**
* @var string
*/
private $cacheKey;

/**
* @param \Magento\Framework\Config\ReaderInterface $configReader
* @param TreeBuilder $resourceTreeBuilder
* @param \Magento\Framework\Acl\Data\CacheInterface $aclDataCache
* @param Json $serializer
* @param string $cacheKey
*/
public function __construct(
\Magento\Framework\Config\ReaderInterface $configReader,
TreeBuilder $resourceTreeBuilder,
\Magento\Framework\Acl\Data\CacheInterface $aclDataCache = null,
Json $serializer = null,
$cacheKey = self::ACL_RESOURCES_CACHE_KEY
) {
$this->_configReader = $configReader;
$this->_resourceTreeBuilder = $resourceTreeBuilder;
$this->aclDataCache = $aclDataCache ?: ObjectManager::getInstance()->get(
\Magento\Framework\Config\CacheInterface::class
);
$this->serializer = $serializer ?: ObjectManager::getInstance()->get(Json::class);
$this->cacheKey = $cacheKey;
}

/**
* {@inheritdoc}
*/
public function getAclResources()
{
$tree = $this->aclDataCache->load($this->cacheKey);
if ($tree) {
return $this->serializer->unserialize($tree);
}
$aclResourceConfig = $this->_configReader->read();
if (!empty($aclResourceConfig['config']['acl']['resources'])) {
$tree = $this->_resourceTreeBuilder->build($aclResourceConfig['config']['acl']['resources']);
$this->aclDataCache->save($this->serializer->serialize($tree), $this->cacheKey);
return $tree;
}
return [];
}
}