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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\App;
use Magento\Framework\Config\ConfigOptionsListConstants;
use Magento\Framework\Exception\FileSystemException;
use Magento\Framework\Exception\RuntimeException;
use Magento\Framework\Phrase;
/**
* Application deployment configuration
*
* @api
* @since 100.0.2
*/
class DeploymentConfig
{
private const MAGENTO_ENV_PREFIX = 'MAGENTO_DC_';
private const ENV_NAME_PATTERN = '~^#env\(\s*(?<name>\w+)\s*(,\s*"(?<default>[^"]+)")?\)$~';
private const OVERRIDE_KEY = self::MAGENTO_ENV_PREFIX . '_OVERRIDE';
/**
* Configuration reader
*
* @var DeploymentConfig\Reader
*/
private $reader;
/**
* Configuration data
*
* @var array
*/
private $data = [];
/**
* Flattened data
*
* @var array
*/
private $flatData = [];
/**
* Injected configuration data
*
* @var array
*/
private $overrideData;
/**
* @var array
*/
private $envOverrides = [];
/**
* @var array
*/
private $readerLoad = [];
/**
* @var array
*/
private $noConfigData = [];
/**
* Constructor
*
* Data can be optionally injected in the constructor. This object's public interface is intentionally immutable
*
* @param DeploymentConfig\Reader $reader
* @param array $overrideData
*/
public function __construct(DeploymentConfig\Reader $reader, $overrideData = [])
{
$this->reader = $reader;
$this->overrideData = $overrideData;
}
/**
* Gets data from flattened data
*
* @param string $key
* @param mixed $defaultValue
* @return mixed|null
* @throws FileSystemException
* @throws RuntimeException
*/
public function get($key = null, $defaultValue = null)
{
if ($key === null) {
if (empty($this->flatData)) {
$this->reloadData();
}
return $this->flatData;
}
$result = $this->getByKey($key);
if ($result === null) {
if (empty($this->flatData)
|| !isset($this->flatData[$key]) && !isset($this->noConfigData[$key])
|| count($this->getAllEnvOverrides())
) {
$this->resetData();
$this->reloadData();
}
if (!isset($this->flatData[$key])) {
$this->noConfigData[$key] = $key;
}
$result = $this->getByKey($key);
}
return $result ?? $defaultValue;
}
/**
* Checks if data available
*
* @return bool
* @throws FileSystemException
* @throws RuntimeException
*/
public function isAvailable()
{
return $this->get(ConfigOptionsListConstants::CONFIG_PATH_INSTALL_DATE) !== null;
}
/**
* Gets a value specified key from config data
*
* @param string|null $key
* @return null|mixed
* @throws FileSystemException
* @throws RuntimeException
*/
public function getConfigData($key = null)
{
if ($key === null) {
if (empty($this->data)) {
$this->reloadInitialData();
}
return $this->data;
}
$result = $this->getConfigDataByKey($key);
if ($result === null) {
$this->reloadInitialData();
$result = $this->getConfigDataByKey($key);
}
return $result;
}
/**
* Resets config data
*
* @return void
*/
public function resetData()
{
$this->data = [];
$this->flatData = [];
}
/**
* Check if data from deploy files is available
*
* @return bool
* @throws FileSystemException
* @throws RuntimeException
* @since 100.1.3
*/
public function isDbAvailable()
{
return $this->getConfigData('db') !== null;
}
/**
* Get additional configuration from env variable MAGENTO_DC__OVERRIDE
*
* Data should be JSON encoded
*
* @return array
*/
private function getEnvOverride() : array
{
$env = getenv(self::OVERRIDE_KEY);
return !empty($env) ? (json_decode($env, true) ?? []) : [];
}
/**
* Loads the configuration data
*
* @return void
* @throws FileSystemException
* @throws RuntimeException
*/
private function reloadInitialData(): void
{
if (empty($this->readerLoad) || empty($this->data) || empty($this->flatData)) {
$this->readerLoad = $this->reader->load();
}
$this->data = array_replace(
$this->readerLoad,
$this->overrideData ?? [],
$this->getEnvOverride()
);
}
/**
* Loads the configuration data
*
* @return void
* @throws FileSystemException
* @throws RuntimeException
*/
private function reloadData(): void
{
$this->reloadInitialData();
// flatten data for config retrieval using get()
$this->flatData = $this->flattenParams($this->data);
$this->flatData = $this->getAllEnvOverrides() + $this->flatData;
}
/**
* Load all getenv() configs once
*
* @return array
*/
private function getAllEnvOverrides(): array
{
if (empty($this->envOverrides)) {
// allow reading values from env variables by convention
// MAGENTO_DC_{path}, like db/connection/default/host =>
// can be overwritten by MAGENTO_DC_DB__CONNECTION__DEFAULT__HOST
foreach (getenv() as $key => $value) {
if (false !== \strpos($key, self::MAGENTO_ENV_PREFIX)
&& $key !== self::OVERRIDE_KEY
) {
// convert MAGENTO_DC_DB__CONNECTION__DEFAULT__HOST into db/connection/default/host
$flatKey = strtolower(str_replace([self::MAGENTO_ENV_PREFIX, '__'], ['', '/'], $key));
$this->envOverrides[$flatKey] = $value;
}
}
}
return $this->envOverrides;
}
/**
* Array keys conversion
*
* Convert associative array of arbitrary depth to a flat associative array with concatenated key path as keys
* each level of array is accessible by path key
*
* @param array $params
* @param string|null $path
* @param array|null $flattenResult
* @return array
* @throws RuntimeException
*/
private function flattenParams(array $params, ?string $path = null, array &$flattenResult = null): array
{
if (null === $flattenResult) {
$flattenResult = [];
}
foreach ($params as $key => $param) {
if ($path) {
$newPath = $path . '/' . $key;
} else {
$newPath = $key;
}
if (isset($flattenResult[$newPath])) {
//phpcs:ignore Magento2.Exceptions.DirectThrow
throw new RuntimeException(new Phrase("Key collision '%1' is already defined.", [$newPath]));
}
if (is_array($param)) {
$flattenResult[$newPath] = $param;
$this->flattenParams($param, $newPath, $flattenResult);
} else {
// allow reading values from env variables
// value need to be specified in %env(NAME, "default value")% format
// like #env(DB_PASSWORD), #env(DB_NAME, "test")
if ($param !== null && preg_match(self::ENV_NAME_PATTERN, $param, $matches)) {
$param = getenv($matches['name']) ?: ($matches['default'] ?? null);
}
$flattenResult[$newPath] = $param;
}
}
return $flattenResult;
}
/**
* Returns flat data by key
*
* @param string|null $key
* @return mixed|null
*/
private function getByKey(?string $key)
{
if (array_key_exists($key, $this->flatData) && $this->flatData[$key] === null) {
return '';
}
return $this->flatData[$key] ?? null;
}
/**
* Returns data by key
*
* @param string|null $key
* @return mixed|null
*/
private function getConfigDataByKey(?string $key)
{
return $this->data[$key] ?? null;
}
}