Viewing file:  EnvPlaceholderParameterBag.php (4.91 KB) -rw-r--r--
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\DependencyInjection\ParameterBag;
use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
use Symfony\Component\DependencyInjection\Exception\RuntimeException;
/**
* @author Nicolas Grekas <[email protected]>
*/
class EnvPlaceholderParameterBag extends ParameterBag
{
private $envPlaceholderUniquePrefix;
private $envPlaceholders = [];
private $unusedEnvPlaceholders = [];
private $providedTypes = [];
private static $counter = 0;
/**
* {@inheritdoc}
*/
public function get(string $name)
{
if (str_starts_with($name, 'env(') && str_ends_with($name, ')') && 'env()' !== $name) {
$env = substr($name, 4, -1);
if (isset($this->envPlaceholders[$env])) {
foreach ($this->envPlaceholders[$env] as $placeholder) {
return $placeholder; // return first result
}
}
if (isset($this->unusedEnvPlaceholders[$env])) {
foreach ($this->unusedEnvPlaceholders[$env] as $placeholder) {
return $placeholder; // return first result
}
}
if (!preg_match('/^(?:[-.\w]*+:)*+\w++$/', $env)) {
throw new InvalidArgumentException(sprintf('Invalid %s name: only "word" characters are allowed.', $name));
}
if ($this->has($name) && null !== ($defaultValue = parent::get($name)) && !\is_string($defaultValue)) {
throw new RuntimeException(sprintf('The default value of an env() parameter must be a string or null, but "%s" given to "%s".', get_debug_type($defaultValue), $name));
}
$uniqueName = md5($name.'_'.self::$counter++);
$placeholder = sprintf('%s_%s_%s', $this->getEnvPlaceholderUniquePrefix(), strtr($env, ':-.', '___'), $uniqueName);
$this->envPlaceholders[$env][$placeholder] = $placeholder;
return $placeholder;
}
return parent::get($name);
}
/**
* Gets the common env placeholder prefix for env vars created by this bag.
*/
public function getEnvPlaceholderUniquePrefix(): string
{
if (null === $this->envPlaceholderUniquePrefix) {
$reproducibleEntropy = unserialize(serialize($this->parameters));
array_walk_recursive($reproducibleEntropy, function (&$v) { $v = null; });
$this->envPlaceholderUniquePrefix = 'env_'.substr(md5(serialize($reproducibleEntropy)), -16);
}
return $this->envPlaceholderUniquePrefix;
}
/**
* Returns the map of env vars used in the resolved parameter values to their placeholders.
*
* @return string[][] A map of env var names to their placeholders
*/
public function getEnvPlaceholders()
{
return $this->envPlaceholders;
}
public function getUnusedEnvPlaceholders(): array
{
return $this->unusedEnvPlaceholders;
}
public function clearUnusedEnvPlaceholders()
{
$this->unusedEnvPlaceholders = [];
}
/**
* Merges the env placeholders of another EnvPlaceholderParameterBag.
*/
public function mergeEnvPlaceholders(self $bag)
{
if ($newPlaceholders = $bag->getEnvPlaceholders()) {
$this->envPlaceholders += $newPlaceholders;
foreach ($newPlaceholders as $env => $placeholders) {
$this->envPlaceholders[$env] += $placeholders;
}
}
if ($newUnusedPlaceholders = $bag->getUnusedEnvPlaceholders()) {
$this->unusedEnvPlaceholders += $newUnusedPlaceholders;
foreach ($newUnusedPlaceholders as $env => $placeholders) {
$this->unusedEnvPlaceholders[$env] += $placeholders;
}
}
}
/**
* Maps env prefixes to their corresponding PHP types.
*/
public function setProvidedTypes(array $providedTypes)
{
$this->providedTypes = $providedTypes;
}
/**
* Gets the PHP types corresponding to env() parameter prefixes.
*
* @return string[][]
*/
public function getProvidedTypes()
{
return $this->providedTypes;
}
/**
* {@inheritdoc}
*/
public function resolve()
{
if ($this->resolved) {
return;
}
parent::resolve();
foreach ($this->envPlaceholders as $env => $placeholders) {
if ($this->has($name = "env($env)") && null !== ($default = $this->parameters[$name]) && !\is_string($default)) {
throw new RuntimeException(sprintf('The default value of env parameter "%s" must be a string or null, "%s" given.', $env, get_debug_type($default)));
}
}
}
}
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