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<?php
namespace Drupal\Core\Config;
use Drupal\Component\Utility\Crypt;
use Drupal\Component\Utility\Unicode;
use Drupal\Core\Config\Entity\ConfigDependencyManager;
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use Drupal\Core\Config\Entity\ConfigEntityDependency;
use Drupal\Core\Site\Settings;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
class ConfigInstaller implements ConfigInstallerInterface {
/**
* The configuration factory.
*
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* @var \Drupal\Core\Config\ConfigFactoryInterface
*/
protected $configFactory;
/**
* The active configuration storages, keyed by collection.
*
* @var \Drupal\Core\Config\StorageInterface[]
*/
protected $activeStorages;
/**
* The typed configuration manager.
*
* @var \Drupal\Core\Config\TypedConfigManagerInterface
*/
protected $typedConfig;
/**
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* The configuration manager.
*
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* @var \Drupal\Core\Config\ConfigManagerInterface
*/
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protected $configManager;
/**
* The event dispatcher.
*
* @var \Symfony\Component\EventDispatcher\EventDispatcherInterface
*/
protected $eventDispatcher;
/**
* The configuration storage that provides the default configuration.
*
* @var \Drupal\Core\Config\StorageInterface
*/
protected $sourceStorage;
/**
* Is configuration being created as part of a configuration sync.
*
* @var bool
*/
protected $isSyncing = FALSE;
/**
* Constructs the configuration installer.
*
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* @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
* The configuration factory.
* @param \Drupal\Core\Config\StorageInterface $active_storage
* The active configuration storage.
* @param \Drupal\Core\Config\TypedConfigManagerInterface $typed_config
* The typed configuration manager.
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* @param \Drupal\Core\Config\ConfigManagerInterface $config_manager
* The configuration manager.
* @param \Symfony\Component\EventDispatcher\EventDispatcherInterface $event_dispatcher
* The event dispatcher.
*/
public function __construct(ConfigFactoryInterface $config_factory, StorageInterface $active_storage, TypedConfigManagerInterface $typed_config, ConfigManagerInterface $config_manager, EventDispatcherInterface $event_dispatcher) {
$this->configFactory = $config_factory;
$this->activeStorages[$active_storage->getCollectionName()] = $active_storage;
$this->typedConfig = $typed_config;
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$this->configManager = $config_manager;
$this->eventDispatcher = $event_dispatcher;
}
/**
* {@inheritdoc}
*/
public function installDefaultConfig($type, $name) {
$extension_path = $this->drupalGetPath($type, $name);
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// Refresh the schema cache if the extension provides configuration schema
// or is a theme.
if (is_dir($extension_path . '/' . InstallStorage::CONFIG_SCHEMA_DIRECTORY) || $type == 'theme') {
$this->typedConfig->clearCachedDefinitions();
}
$default_install_path = $this->getDefaultConfigDirectory($type, $name);
if (is_dir($default_install_path)) {
if (!$this->isSyncing()) {
$storage = new FileStorage($default_install_path, StorageInterface::DEFAULT_COLLECTION);
$prefix = '';
}
else {
// The configuration importer sets the source storage on the config
// installer. The configuration importer handles all of the
// configuration entity imports. We only need to ensure that simple
// configuration is created when the extension is installed.
$storage = $this->getSourceStorage();
$prefix = $name . '.';
}
// Gets profile storages to search for overrides if necessary.
$profile_storages = $this->getProfileStorages($name);
// Gather information about all the supported collections.
$collection_info = $this->configManager->getConfigCollectionInfo();
foreach ($collection_info->getCollectionNames() as $collection) {
$config_to_create = $this->getConfigToCreate($storage, $collection, $prefix, $profile_storages);
// If we're installing a profile ensure configuration that is overriding
// is excluded.
if ($name == $this->drupalGetProfile()) {
$existing_configuration = $this->getActiveStorages($collection)->listAll();
$config_to_create = array_diff_key($config_to_create, array_flip($existing_configuration));
}
if (!empty($config_to_create)) {
$this->createConfiguration($collection, $config_to_create);
}
}
}
// During a drupal installation optional configuration is installed at the
// end of the installation process.
// @see install_install_profile()
if (!$this->isSyncing() && !$this->drupalInstallationAttempted()) {
$optional_install_path = $extension_path . '/' . InstallStorage::CONFIG_OPTIONAL_DIRECTORY;
if (is_dir($optional_install_path)) {
// Install any optional config the module provides.
$storage = new FileStorage($optional_install_path, StorageInterface::DEFAULT_COLLECTION);
$this->installOptionalConfig($storage, '');
}
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// Install any optional configuration entities whose dependencies can now
// be met. This searches all the installed modules config/optional
// directories.
$storage = new ExtensionInstallStorage($this->getActiveStorages(StorageInterface::DEFAULT_COLLECTION), InstallStorage::CONFIG_OPTIONAL_DIRECTORY, StorageInterface::DEFAULT_COLLECTION, FALSE);
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$this->installOptionalConfig($storage, [$type => $name]);
}
// Reset all the static caches and list caches.
$this->configFactory->reset();
}
/**
* {@inheritdoc}
*/
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public function installOptionalConfig(StorageInterface $storage = NULL, $dependency = []) {
$profile = $this->drupalGetProfile();
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$optional_profile_config = [];
if (!$storage) {
// Search the install profile's optional configuration too.
$storage = new ExtensionInstallStorage($this->getActiveStorages(StorageInterface::DEFAULT_COLLECTION), InstallStorage::CONFIG_OPTIONAL_DIRECTORY, StorageInterface::DEFAULT_COLLECTION, TRUE);
// The extension install storage ensures that overrides are used.
$profile_storage = NULL;
}
elseif (isset($profile)) {
// Creates a profile storage to search for overrides.
$profile_install_path = $this->drupalGetPath('module', $profile) . '/' . InstallStorage::CONFIG_OPTIONAL_DIRECTORY;
$profile_storage = new FileStorage($profile_install_path, StorageInterface::DEFAULT_COLLECTION);
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$optional_profile_config = $profile_storage->listAll();
else {
// Profile has not been set yet. For example during the first steps of the
// installer or during unit tests.
$profile_storage = NULL;
}
$enabled_extensions = $this->getEnabledExtensions();
$existing_config = $this->getActiveStorages()->listAll();
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$list = array_unique(array_merge($storage->listAll(), $optional_profile_config));
$list = array_filter($list, function($config_name) use ($existing_config) {
// Only list configuration that:
// - does not already exist
// - is a configuration entity (this also excludes config that has an
// implicit dependency on modules that are not yet installed)
return !in_array($config_name, $existing_config) && $this->configManager->getEntityTypeIdByName($config_name);
});
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$all_config = array_merge($existing_config, $list);
$all_config = array_combine($all_config, $all_config);
$config_to_create = $storage->readMultiple($list);
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// Check to see if the corresponding override storage has any overrides or
// new configuration that can be installed.
if ($profile_storage) {
$config_to_create = $profile_storage->readMultiple($list) + $config_to_create;
}
// Sort $config_to_create in the order of the least dependent first.
$dependency_manager = new ConfigDependencyManager();
$dependency_manager->setData($config_to_create);
$config_to_create = array_merge(array_flip($dependency_manager->sortAll()), $config_to_create);
foreach ($config_to_create as $config_name => $data) {
// Remove configuration where its dependencies cannot be met.
$remove = !$this->validateDependencies($config_name, $data, $enabled_extensions, $all_config);
// If $dependency is defined, remove configuration that does not have a
// matching dependency.
if (!$remove && !empty($dependency)) {
// Create a light weight dependency object to check dependencies.
$config_entity = new ConfigEntityDependency($config_name, $data);
$remove = !$config_entity->hasDependency(key($dependency), reset($dependency));
}
if ($remove) {
// Remove from the list of configuration to create.
unset($config_to_create[$config_name]);
// Remove from the list of all configuration. This ensures that any
// configuration that depends on this configuration is also removed.
unset($all_config[$config_name]);
}
}
if (!empty($config_to_create)) {
$this->createConfiguration(StorageInterface::DEFAULT_COLLECTION, $config_to_create, TRUE);
}
}
/**
* Gets configuration data from the provided storage to create.
*
* @param StorageInterface $storage
* The configuration storage to read configuration from.
* @param string $collection
* The configuration collection to use.
* @param string $prefix
* (optional) Limit to configuration starting with the provided string.
* @param \Drupal\Core\Config\StorageInterface[] $profile_storages
* An array of storage interfaces containing profile configuration to check
* for overrides.
*
* @return array
* An array of configuration data read from the source storage keyed by the
* configuration object name.
*/
protected function getConfigToCreate(StorageInterface $storage, $collection, $prefix = '', array $profile_storages = []) {
if ($storage->getCollectionName() != $collection) {
$storage = $storage->createCollection($collection);
}
$data = $storage->readMultiple($storage->listAll($prefix));
// Check to see if the corresponding override storage has any overrides.
foreach ($profile_storages as $profile_storage) {
if ($profile_storage->getCollectionName() != $collection) {
$profile_storage = $profile_storage->createCollection($collection);
}
$data = $profile_storage->readMultiple(array_keys($data)) + $data;
}
return $data;
}
/**
* Creates configuration in a collection based on the provided list.
*
* @param string $collection
* The configuration collection.
* @param array $config_to_create
* An array of configuration data to create, keyed by name.
*/
protected function createConfiguration($collection, array $config_to_create) {
// Order the configuration to install in the order of dependencies.
if ($collection == StorageInterface::DEFAULT_COLLECTION) {
$dependency_manager = new ConfigDependencyManager();
$config_names = $dependency_manager
->setData($config_to_create)
->sortAll();
}
else {
$config_names = array_keys($config_to_create);
}
foreach ($config_names as $name) {
// Allow config factory overriders to use a custom configuration object if
// they are responsible for the collection.
$overrider = $this->configManager->getConfigCollectionInfo()->getOverrideService($collection);
if ($overrider) {
$new_config = $overrider->createConfigObject($name, $collection);
}
else {
$new_config = new Config($name, $this->getActiveStorages($collection), $this->eventDispatcher, $this->typedConfig);
if ($config_to_create[$name] !== FALSE) {
$new_config->setData($config_to_create[$name]);
// Add a hash to configuration created through the installer so it is
// possible to know if the configuration was created by installing an
// extension and to track which version of the default config was used.
if (!$this->isSyncing() && $collection == StorageInterface::DEFAULT_COLLECTION) {
$new_config->set('_core.default_config_hash', Crypt::hashBase64(serialize($config_to_create[$name])));
}
}
if ($collection == StorageInterface::DEFAULT_COLLECTION && $entity_type = $this->configManager->getEntityTypeIdByName($name)) {
// If we are syncing do not create configuration entities. Pluggable
// configuration entities can have dependencies on modules that are
// not yet enabled. This approach means that any code that expects
// default configuration entities to exist will be unstable after the
// module has been enabled and before the config entity has been
// imported.
if ($this->isSyncing()) {
continue;
}
/** @var \Drupal\Core\Config\Entity\ConfigEntityStorageInterface $entity_storage */
$entity_storage = $this->configManager
->getEntityManager()
->getStorage($entity_type);
// It is possible that secondary writes can occur during configuration
// creation. Updates of such configuration are allowed.
if ($this->getActiveStorages($collection)->exists($name)) {
$id = $entity_storage->getIDFromConfigName($name, $entity_storage->getEntityType()->getConfigPrefix());
$entity = $entity_storage->load($id);
$entity = $entity_storage->updateFromStorageRecord($entity, $new_config->get());
}
else {
$entity = $entity_storage->createFromStorageRecord($new_config->get());
}
if ($entity->isInstallable()) {
$entity->trustData()->save();
}
else {
$new_config->save(TRUE);
}
}
}
/**
* {@inheritdoc}
*/
public function installCollectionDefaultConfig($collection) {
$storage = new ExtensionInstallStorage($this->getActiveStorages(StorageInterface::DEFAULT_COLLECTION), InstallStorage::CONFIG_INSTALL_DIRECTORY, $collection, $this->drupalInstallationAttempted());
// Only install configuration for enabled extensions.
$enabled_extensions = $this->getEnabledExtensions();
$config_to_install = array_filter($storage->listAll(), function ($config_name) use ($enabled_extensions) {
$provider = Unicode::substr($config_name, 0, strpos($config_name, '.'));
return in_array($provider, $enabled_extensions);
});
if (!empty($config_to_install)) {
$this->createConfiguration($collection, $storage->readMultiple($config_to_install));
// Reset all the static caches and list caches.
$this->configFactory->reset();
}
}
/**
* {@inheritdoc}
*/
public function setSourceStorage(StorageInterface $storage) {
$this->sourceStorage = $storage;
return $this;
}
/**
* Gets the configuration storage that provides the default configuration.
*
* @return \Drupal\Core\Config\StorageInterface|null
* The configuration storage that provides the default configuration.
* Returns null if the source storage has not been set.
*/
public function getSourceStorage() {
return $this->sourceStorage;
}
/**
* Gets the configuration storage that provides the active configuration.
*
* @param string $collection
* (optional) The configuration collection. Defaults to the default
* collection.
*
* @return \Drupal\Core\Config\StorageInterface
* The configuration storage that provides the default configuration.
*/
protected function getActiveStorages($collection = StorageInterface::DEFAULT_COLLECTION) {
if (!isset($this->activeStorages[$collection])) {
$this->activeStorages[$collection] = reset($this->activeStorages)->createCollection($collection);
}
return $this->activeStorages[$collection];
}
/**
* {@inheritdoc}
*/
public function setSyncing($status) {
if (!$status) {
$this->sourceStorage = NULL;
}
$this->isSyncing = $status;
return $this;
}
/**
* {@inheritdoc}
*/
public function isSyncing() {
return $this->isSyncing;
}
/**
* Finds pre-existing configuration objects for the provided extension.
*
* Extensions can not be installed if configuration objects exist in the
* active storage with the same names. This can happen in a number of ways,
* commonly:
* - if a user has created configuration with the same name as that provided
* by the extension.
* - if the extension provides default configuration that does not depend on
* it and the extension has been uninstalled and is about to the
* reinstalled.
*
* @return array
* Array of configuration object names that already exist keyed by
* collection.
*/
protected function findPreExistingConfiguration(StorageInterface $storage) {
$existing_configuration = array();
// Gather information about all the supported collections.
$collection_info = $this->configManager->getConfigCollectionInfo();
foreach ($collection_info->getCollectionNames() as $collection) {
$config_to_create = array_keys($this->getConfigToCreate($storage, $collection));
$active_storage = $this->getActiveStorages($collection);
foreach ($config_to_create as $config_name) {
if ($active_storage->exists($config_name)) {
$existing_configuration[$collection][] = $config_name;
}
}
}
return $existing_configuration;
}
/**
* {@inheritdoc}
*/
public function checkConfigurationToInstall($type, $name) {
if ($this->isSyncing()) {
// Configuration is assumed to already be checked by the config importer
// validation events.
return;
}
$config_install_path = $this->getDefaultConfigDirectory($type, $name);
if (!is_dir($config_install_path)) {
return;
}
$storage = new FileStorage($config_install_path, StorageInterface::DEFAULT_COLLECTION);
$enabled_extensions = $this->getEnabledExtensions();
// Add the extension that will be enabled to the list of enabled extensions.
$enabled_extensions[] = $name;
// Gets profile storages to search for overrides if necessary.
$profile_storages = $this->getProfileStorages($name);
// Check the dependencies of configuration provided by the module.
list($invalid_default_config, $missing_dependencies) = $this->findDefaultConfigWithUnmetDependencies($storage, $enabled_extensions, $profile_storages);
if (!empty($invalid_default_config)) {
throw UnmetDependenciesException::create($name, array_unique($missing_dependencies));
}
// Install profiles can not have config clashes. Configuration that
// has the same name as a module's configuration will be used instead.
if ($name != $this->drupalGetProfile()) {
// Throw an exception if the module being installed contains configuration
// that already exists. Additionally, can not continue installing more
// modules because those may depend on the current module being installed.
$existing_configuration = $this->findPreExistingConfiguration($storage);
if (!empty($existing_configuration)) {
throw PreExistingConfigException::create($name, $existing_configuration);
}
}
}
/**
* Finds default configuration with unmet dependencies.
*
* @param \Drupal\Core\Config\StorageInterface $storage
* The storage containing the default configuration.
* @param array $enabled_extensions
* A list of all the currently enabled modules and themes.
* @param \Drupal\Core\Config\StorageInterface[] $profile_storages
* An array of storage interfaces containing profile configuration to check
* for overrides.
*
* @return array
* An array containing:
* - A list of configuration that has unmet dependencies.
* - An array that will be filled with the missing dependency names, keyed
* by the dependents' names.
protected function findDefaultConfigWithUnmetDependencies(StorageInterface $storage, array $enabled_extensions, array $profile_storages = []) {
$missing_dependencies = [];
$config_to_create = $this->getConfigToCreate($storage, StorageInterface::DEFAULT_COLLECTION, '', $profile_storages);
$all_config = array_merge($this->configFactory->listAll(), array_keys($config_to_create));
foreach ($config_to_create as $config_name => $config) {
if ($missing = $this->getMissingDependencies($config_name, $config, $enabled_extensions, $all_config)) {
$missing_dependencies[$config_name] = $missing;
}
}
return [
array_intersect_key($config_to_create, $missing_dependencies),
$missing_dependencies,
];
}
/**
* Validates an array of config data that contains dependency information.
*
* @param string $config_name
* The name of the configuration object that is being validated.
* @param array $data
* Configuration data.
* @param array $enabled_extensions
* A list of all the currently enabled modules and themes.
* @param array $all_config
* A list of all the active configuration names.
*
* @return bool
* TRUE if all dependencies are present, FALSE otherwise.
*/
protected function validateDependencies($config_name, array $data, array $enabled_extensions, array $all_config) {
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if (!isset($data['dependencies'])) {
// Simple config or a config entity without dependencies.
list($provider) = explode('.', $config_name, 2);
return in_array($provider, $enabled_extensions, TRUE);
}
$missing = $this->getMissingDependencies($config_name, $data, $enabled_extensions, $all_config);
return empty($missing);
}
/**
* Returns an array of missing dependencies for a config object.
*
* @param string $config_name
* The name of the configuration object that is being validated.
* @param array $data
* Configuration data.
* @param array $enabled_extensions
* A list of all the currently enabled modules and themes.
* @param array $all_config
* A list of all the active configuration names.
*
* @return array
* A list of missing config dependencies.
*/
protected function getMissingDependencies($config_name, array $data, array $enabled_extensions, array $all_config) {
$missing = [];
if (isset($data['dependencies'])) {
list($provider) = explode('.', $config_name, 2);
$all_dependencies = $data['dependencies'];
// Ensure enforced dependencies are included.
if (isset($all_dependencies['enforced'])) {
$all_dependencies = array_merge($all_dependencies, $data['dependencies']['enforced']);
unset($all_dependencies['enforced']);
}
// Ensure the configuration entity type provider is in the list of
// dependencies.
if (!isset($all_dependencies['module']) || !in_array($provider, $all_dependencies['module'])) {
$all_dependencies['module'][] = $provider;
}
foreach ($all_dependencies as $type => $dependencies) {
$list_to_check = [];
switch ($type) {
case 'module':
case 'theme':
$list_to_check = $enabled_extensions;
break;
case 'config':
$list_to_check = $all_config;
break;
}
if (!empty($list_to_check)) {
$missing = array_merge($missing, array_diff($dependencies, $list_to_check));
}
}
}
return $missing;
}
/**
* Gets the list of enabled extensions including both modules and themes.
*
* @return array
* A list of enabled extensions which includes both modules and themes.
*/
protected function getEnabledExtensions() {
// Read enabled extensions directly from configuration to avoid circular
// dependencies on ModuleHandler and ThemeHandler.
$extension_config = $this->configFactory->get('core.extension');
$enabled_extensions = (array) $extension_config->get('module');
$enabled_extensions += (array) $extension_config->get('theme');
// Core can provide configuration.
$enabled_extensions['core'] = 'core';
return array_keys($enabled_extensions);
}
/**
* Gets the profile storage to use to check for profile overrides.
*
* The install profile can override module configuration during a module
* install. Both the install and optional directories are checked for matching
* configuration. This allows profiles to override default configuration for
* modules they do not depend on.
*
* @param string $installing_name
* (optional) The name of the extension currently being installed.
*
* @return \Drupal\Core\Config\StorageInterface[]|null
* Storages to access configuration from the installation profile. If we're
* installing the profile itself, then it will return an empty array as the
* profile storage should not be used.
protected function getProfileStorages($installing_name = '') {
$profile = $this->drupalGetProfile();
$profile_storages = [];
if ($profile && $profile != $installing_name) {
$profile_path = $this->drupalGetPath('module', $profile);
foreach ([InstallStorage::CONFIG_INSTALL_DIRECTORY, InstallStorage::CONFIG_OPTIONAL_DIRECTORY] as $directory) {
if (is_dir($profile_path . '/' . $directory)) {
$profile_storages[] = new FileStorage($profile_path . '/' . $directory, StorageInterface::DEFAULT_COLLECTION);
}
}
return $profile_storages;
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}
/**
* Gets an extension's default configuration directory.
*
* @param string $type
* Type of extension to install.
* @param string $name
* Name of extension to install.
*
* @return string
* The extension's default configuration directory.
*/
protected function getDefaultConfigDirectory($type, $name) {
return $this->drupalGetPath($type, $name) . '/' . InstallStorage::CONFIG_INSTALL_DIRECTORY;
}
/**
* Wrapper for drupal_get_path().
*
* @param $type
* The type of the item; one of 'core', 'profile', 'module', 'theme', or
* 'theme_engine'.
* @param $name
* The name of the item for which the path is requested. Ignored for
* $type 'core'.
*
* @return string
* The path to the requested item or an empty string if the item is not
* found.
*/
protected function drupalGetPath($type, $name) {
return drupal_get_path($type, $name);
}
/**
* Gets the install profile from settings.
*
* @return string|null $profile
* The name of the installation profile or NULL if no installation profile
* is currently active. This is the case for example during the first steps
* of the installer or during unit tests.
*/
protected function drupalGetProfile() {
// Settings is safe to use because settings.php is written before any module
// is installed.
return Settings::get('install_profile');
}
/**
* Wrapper for drupal_installation_attempted().
*
* @return bool
* TRUE if a Drupal installation is currently being attempted.
*/
protected function drupalInstallationAttempted() {
return drupal_installation_attempted();
}