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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Deploy\Model\DeploymentConfig;
use Magento\Deploy\Model\DeploymentConfig\Hash\Generator as HashGenerator;
/**
* Configuration data changes detector.
*
* Detects changes in specific sections of the deployment configuration files.
* This detector checks that configuration data from sections was not changed.
*/
class ChangeDetector
{
/**
* Hash storage.
*
* @var Hash
*/
private $configHash;
/**
* Hash generator of config data.
*
* @var HashGenerator
*/
private $hashGenerator;
/**
* Config data collector of specific sections.
*
* @var DataCollector
*/
private $dataConfigCollector;
/**
* @param Hash $configHash The hash storage
* @param HashGenerator $hashGenerator The hash generator of config data
* @param DataCollector $dataConfigCollector The config data collector of specific sections
*/
public function __construct(
Hash $configHash,
HashGenerator $hashGenerator,
DataCollector $dataConfigCollector
) {
$this->configHash = $configHash;
$this->hashGenerator = $hashGenerator;
$this->dataConfigCollector = $dataConfigCollector;
}
/**
* Checks if config data in the deployment configuration files was changed.
*
* Checks if config data was changed based on its hash.
* If the new hash of config data and the saved hash are different returns true.
* If config data is empty always returns false.
* In the other cases returns false.
*
* @param string $sectionName The section name for check data of the specific section
* @return bool
*/
public function hasChanges($sectionName = null)
{
$configs = $this->dataConfigCollector->getConfig($sectionName);
$hashes = $this->configHash->get();
foreach ($configs as $section => $config) {
if (null === $config) {
continue;
}
$savedHash = isset($hashes[$section]) ? $hashes[$section] : null;
$generatedHash = empty($config) && !$savedHash ? null : $this->hashGenerator->generate($config);
if ($generatedHash !== $savedHash) {
return true;
}
}
return false;
}
}