Commit 8c14acad authored by catch's avatar catch
Browse files

Issue #3015886 by bircher, alexpott, Upchuk: Add an in-memory config storage

parent ffad3652
<?php
namespace Drupal\Core\Config;
/**
* Provides an in memory configuration storage.
*/
class MemoryStorage implements StorageInterface {
/**
* The configuration, an object shared by reference across collections.
*
* @var \ArrayAccess
*/
protected $config;
/**
* The storage collection.
*
* @var string
*/
protected $collection;
/**
* Constructs a new MemoryStorage.
*
* @param string $collection
* (optional) The collection to store configuration in. Defaults to the
* default collection.
*/
public function __construct($collection = StorageInterface::DEFAULT_COLLECTION) {
$this->collection = $collection;
$this->config = new \ArrayObject();
}
/**
* {@inheritdoc}
*/
public function exists($name) {
return isset($this->config[$this->collection][$name]);
}
/**
* {@inheritdoc}
*/
public function read($name) {
if ($this->exists($name)) {
return $this->config[$this->collection][$name];
}
return FALSE;
}
/**
* {@inheritdoc}
*/
public function readMultiple(array $names) {
return array_intersect_key($this->config[$this->collection], array_flip($names));
}
/**
* {@inheritdoc}
*/
public function write($name, array $data) {
$this->config[$this->collection][$name] = $data;
return TRUE;
}
/**
* {@inheritdoc}
*/
public function delete($name) {
if (isset($this->config[$this->collection][$name])) {
unset($this->config[$this->collection][$name]);
// Remove the collection if it is empty.
if (empty($this->config[$this->collection])) {
$this->config->offsetUnset($this->collection);
}
return TRUE;
}
return FALSE;
}
/**
* {@inheritdoc}
*/
public function rename($name, $new_name) {
if (!$this->exists($name)) {
return FALSE;
}
$this->config[$this->collection][$new_name] = $this->config[$this->collection][$name];
unset($this->config[$this->collection][$name]);
return TRUE;
}
/**
* {@inheritdoc}
*/
public function encode($data) {
return $data;
}
/**
* {@inheritdoc}
*/
public function decode($raw) {
return $raw;
}
/**
* {@inheritdoc}
*/
public function listAll($prefix = '') {
if (empty($this->config[$this->collection])) {
// If the collection is empty no keys are set.
return [];
}
$names = array_keys($this->config[$this->collection]);
if ($prefix !== '') {
$names = array_filter($names, function ($name) use ($prefix) {
return strpos($name, $prefix) === 0;
});
}
return $names;
}
/**
* {@inheritdoc}
*/
public function deleteAll($prefix = '') {
if (!$this->config->offsetExists($this->collection)) {
// There's nothing to delete.
return FALSE;
}
if ($prefix === '') {
$this->config->offsetUnset($this->collection);
return TRUE;
}
$success = FALSE;
foreach (array_keys($this->config[$this->collection]) as $name) {
if (strpos($name, $prefix) === 0) {
$success = TRUE;
unset($this->config[$this->collection][$name]);
}
}
// Remove the collection if it is empty.
if (empty($this->config[$this->collection])) {
$this->config->offsetUnset($this->collection);
}
return $success;
}
/**
* {@inheritdoc}
*/
public function createCollection($collection) {
$collection = new static($collection);
$collection->config = $this->config;
return $collection;
}
/**
* {@inheritdoc}
*/
public function getAllCollectionNames() {
$collection_names = [];
foreach ($this->config as $collection_name => $data) {
// Exclude the default collection and empty collections.
if ($collection_name !== StorageInterface::DEFAULT_COLLECTION && !empty($data)) {
$collection_names[] = $collection_name;
}
}
sort($collection_names);
return $collection_names;
}
/**
* {@inheritdoc}
*/
public function getCollectionName() {
return $this->collection;
}
}
<?php
namespace Drupal\KernelTests\Core\Config\Storage;
use Drupal\Core\Config\MemoryStorage;
/**
* Tests MemoryStorage operations.
*
* @group config
*/
class MemoryStorageTest extends ConfigStorageTestBase {
/**
* {@inheritdoc}
*/
protected function setUp() {
parent::setUp();
$this->storage = new MemoryStorage();
// ::listAll() verifications require other configuration data to exist.
$this->storage->write('system.performance', []);
}
/**
* {@inheritdoc}
*/
protected function read($name) {
return $this->storage->read($name);
}
/**
* {@inheritdoc}
*/
protected function insert($name, $data) {
$this->storage->write($name, $data);
}
/**
* {@inheritdoc}
*/
protected function update($name, $data) {
$this->storage->write($name, $data);
}
/**
* {@inheritdoc}
*/
protected function delete($name) {
$this->storage->delete($name);
}
/**
* {@inheritdoc}
*/
public function testInvalidStorage() {
$this->markTestSkipped('MemoryStorage cannot be invalid.');
}
}
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