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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Config\App\Config\Source;
use Magento\Framework\App\Config\ConfigSourceInterface;
use Magento\Framework\DataObject;
use Magento\Config\Model\Placeholder\PlaceholderFactory;
use Magento\Config\Model\Placeholder\PlaceholderInterface;
use Magento\Framework\Stdlib\ArrayManager;
/**
* Class for retrieving configurations from environment variables.
*
* @api
* @since 101.0.0
*/
class EnvironmentConfigSource implements ConfigSourceInterface
{
/**
* Library for working with arrays.
*
* @var ArrayManager
*/
private $arrayManager;
/**
* Object for working with placeholders for environment variables.
*
* @var PlaceholderInterface
*/
private $placeholder;
/**
* @param ArrayManager $arrayManager
* @param PlaceholderFactory $placeholderFactory
*/
public function __construct(
ArrayManager $arrayManager,
PlaceholderFactory $placeholderFactory
) {
$this->arrayManager = $arrayManager;
$this->placeholder = $placeholderFactory->create(PlaceholderFactory::TYPE_ENVIRONMENT);
}
/**
* @inheritdoc
* @since 101.0.0
*/
public function get($path = '')
{
$data = new DataObject($this->loadConfig());
return $data->getData($path) ?: [];
}
/**
* Loads config from environment variables.
*
* @return array
*/
private function loadConfig()
{
$config = [];
$environmentVariables = $_ENV;
foreach ($environmentVariables as $template => $value) {
if (!$this->placeholder->isApplicable($template)) {
continue;
}
$config = $this->arrayManager->set(
$this->placeholder->restore($template),
$config,
$value
);
}
return $config;
}
}