Issue #2162013 by alexpott, Berdir, sun, pwolanin: Critical performance regression due to config schema + TypedData lookups in installer.

core/core.services.yml

@@ -107,7 +107,7 @@ services:
     class: Drupal\Core\Config\InstallStorage
   config.typed:
     class: Drupal\Core\Config\TypedConfigManager
-    arguments: ['@config.storage', '@config.storage.schema']
+    arguments: ['@config.storage', '@config.storage.schema', '@cache.config']
   database:
     class: Drupal\Core\Database\Connection
     factory_class: Drupal\Core\Database\Database

core/includes/install.core.inc

@@ -390,7 +390,8 @@ function install_begin_request(&$install_state) {
 
     $container->register('config.typed', 'Drupal\Core\Config\TypedConfigManager')
       ->addArgument(new Reference('config.storage'))
-      ->addArgument(new Reference('config.storage.schema'));
+      ->addArgument(new Reference('config.storage.schema'))
+      ->addArgument(new Reference('cache.config'));
 
     $container->register('config.factory', 'Drupal\Core\Config\ConfigFactory')
       ->addArgument(new Reference('config.storage'))

core/lib/Drupal/Core/Config/Config.php

@@ -11,6 +11,7 @@ use Drupal\Component\Utility\NestedArray;
 use Drupal\Component\Utility\String;
 use Drupal\Core\Config\ConfigNameException;
 use Drupal\Core\Config\Context\ContextInterface;
+use Drupal\Core\Config\Schema\SchemaIncompleteException;
 use Drupal\Core\TypedData\PrimitiveInterface;
 use Drupal\Core\TypedData\Type\FloatInterface;
 use Drupal\Core\TypedData\Type\IntegerInterface;
@@ -516,37 +517,6 @@ class Config {
     return $this->schemaWrapper;
   }
 
-  /**
-   * Gets the definition for the configuration key.
-   *
-   * @param string $key
-   *   A string that maps to a key within the configuration data.
-   *
-   * @return \Drupal\Core\Config\Schema\Element
-   *
-   * @throws \Drupal\Core\Config\ConfigException
-   *   Thrown when schema is incomplete.
-   */
-  protected function getSchemaForKey($key) {
-    $parts = explode('.', $key);
-    $schema_wrapper = $this->getSchemaWrapper();
-    if (count($parts) == 1) {
-      $schema = $schema_wrapper->get($key);
-    }
-    else {
-      $schema = clone $schema_wrapper;
-      foreach ($parts as $nested_key) {
-        if (!is_object($schema) || !method_exists($schema, 'get')) {
-          throw new ConfigException(String::format("Incomplete schema for !key key in configuration object !name.", array('!name' => $this->name, '!key' => $key)));
-        }
-        else {
-          $schema = $schema->get($nested_key);
-        }
-      }
-    }
-    return $schema;
-  }
-
   /**
    * Casts the value to correct data type using the configuration schema.
    *
@@ -564,7 +534,7 @@ class Config {
     }
     elseif (is_scalar($value)) {
       try {
-        $element = $this->getSchemaForKey($key);
+        $element = $this->getSchemaWrapper()->get($key);
         if ($element instanceof PrimitiveInterface) {
           // Special handling for integers and floats since the configuration
           // system is primarily concerned with saving values from the Form API
@@ -586,7 +556,7 @@ class Config {
           $value = $element->getString();
         }
       }
-      catch (\Exception $e) {
+      catch (SchemaIncompleteException $e) {
         // @todo throw an exception due to an incomplete schema. Only possible
         //   once https://drupal.org/node/1910624 is complete.
       }

core/lib/Drupal/Core/Config/Schema/Mapping.php

@@ -7,10 +7,8 @@
 
 namespace Drupal\Core\Config\Schema;
 
-use Drupal\Component\Utility\NestedArray;
 use Drupal\Core\TypedData\ComplexDataInterface;
-use Drupal\Core\TypedData\TypedDataInterface;
-use \InvalidArgumentException;
+use Drupal\Component\Utility\String;
 
 /**
  * Defines a mapping configuration element.
@@ -36,17 +34,29 @@ class Mapping extends ArrayElement implements ComplexDataInterface {
 
   /**
    * Implements Drupal\Core\TypedData\ComplexDataInterface::get().
+   *
+   * Since all configuration objects are mappings the function will except a dot
+   * delimited key to access nested values, for example, 'page.front'.
    */
   public function get($property_name) {
+    $parts = explode('.', $property_name);
+    $root_key = array_shift($parts);
     $elements = $this->getElements();
-    if (isset($elements[$property_name])) {
-      return $elements[$property_name];
+    if (isset($elements[$root_key])) {
+      $element = $elements[$root_key];
     }
     else {
-      throw new InvalidArgumentException(format_string("The configuration property @key doesn't exist.", array(
-          '@key' => $property_name,
-      )));
+      throw new SchemaIncompleteException(String::format("The configuration property @key doesn't exist.", array('@key' => $property_name)));
     }
+
+    // If $property_name contained a dot recurse into the keys.
+    foreach ($parts as $key) {
+     if (!is_object($element) || !method_exists($element, 'get')) {
+        throw new SchemaIncompleteException(String::format("The configuration property @key does not exist.", array('@key' => $property_name)));
+      }
+      $element = $element->get($key);
+    }
+    return $element;
   }
 
   /**

core/lib/Drupal/Core/Config/Schema/SchemaIncompleteException.php

@@ -0,0 +1,14 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\Config\Schema\SchemaIncompleteException.
+ */
+
+namespace Drupal\Core\Config\Schema;
+
+/**
+ * An exception thrown when a config schema is incomplete.
+ */
+class SchemaIncompleteException extends \RuntimeException {
+}

core/lib/Drupal/Core/Config/Schema/Sequence.php

@@ -18,7 +18,7 @@ class Sequence extends ArrayElement implements ListInterface {
    * Overrides ArrayElement::parse()
    */
   protected function parse() {
-    $definition = $definition = $this->getItemDefinition();
+    $definition = $this->getItemDefinition();
     $elements = array();
     foreach ($this->value as $key => $value) {
       $elements[$key] = $this->parseElement($key, $value, $definition);
@@ -60,7 +60,7 @@ class Sequence extends ArrayElement implements ListInterface {
    *   Typed configuration element.
    */
   public function get($key) {
-    $elements = $this->parse();
+    $elements = $this->getElements();
     return $elements[$key];
   }
 

core/lib/Drupal/Core/Config/TypedConfigManager.php

@@ -11,13 +11,20 @@ use Drupal\Component\Plugin\Exception\PluginException;
 use Drupal\Component\Plugin\PluginManagerBase;
 use Drupal\Component\Utility\NestedArray;
 use Drupal\Component\Utility\String;
-use Drupal\Core\Config\TypedConfigManagerInterface;
+use Drupal\Core\Cache\CacheBackendInterface;
 
 /**
  * Manages config type plugins.
  */
 class TypedConfigManager extends PluginManagerBase implements TypedConfigManagerInterface {
 
+  /**
+   * The cache ID for the definitions.
+   *
+   * @var string
+   */
+  const CACHE_ID = 'typed_config_definitions';
+
   /**
    * A storage controller instance for reading configuration data.
    *
@@ -39,6 +46,13 @@ class TypedConfigManager extends PluginManagerBase implements TypedConfigManager
    */
   protected $definitions;
 
+  /**
+   * Cache backend for the definitions.
+   *
+   * @var \Drupal\Core\Cache\CacheBackendInterface
+   */
+  protected $cache;
+
   /**
    * Creates a new typed configuration manager.
    *
@@ -46,10 +60,13 @@ class TypedConfigManager extends PluginManagerBase implements TypedConfigManager
    *   The storage controller object to use for reading schema data
    * @param \Drupal\Core\Config\StorageInterface $schemaStorage
    *   The storage controller object to use for reading schema data
+   * @param \Drupal\Core\Cache\CacheBackendInterface $cache
+   *   The cache backend to use for caching the definitions.
    */
-  public function __construct(StorageInterface $configStorage, StorageInterface $schemaStorage) {
+  public function __construct(StorageInterface $configStorage, StorageInterface $schemaStorage, CacheBackendInterface $cache) {
     $this->configStorage = $configStorage;
     $this->schemaStorage = $schemaStorage;
+    $this->cache = $cache;
   }
 
   /**
@@ -157,22 +174,34 @@ class TypedConfigManager extends PluginManagerBase implements TypedConfigManager
   }
 
   /**
-   * Implements Drupal\Component\Plugin\Discovery\DiscoveryInterface::getDefinitions().
+   * {@inheritdoc}
    */
   public function getDefinitions() {
     if (!isset($this->definitions)) {
-      $this->definitions = array();
-      foreach ($this->schemaStorage->listAll() as $name) {
-        if ($schema = $this->schemaStorage->read($name)) {
+      if ($cache = $this->cache->get($this::CACHE_ID)) {
+        $this->definitions = $cache->data;
+      }
+      else {
+        $this->definitions = array();
+        foreach ($this->schemaStorage->readMultiple($this->schemaStorage->listAll()) as $schema) {
           foreach ($schema as $type => $definition) {
             $this->definitions[$type] = $definition;
           }
         }
+        $this->cache->set($this::CACHE_ID, $this->definitions);
       }
     }
     return $this->definitions;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function clearCachedDefinitions() {
+    $this->definitions = NULL;
+    $this->cache->delete($this::CACHE_ID);
+  }
+
   /**
    * Gets fallback metadata name.
    *

core/modules/locale/lib/Drupal/locale/LocaleConfigManager.php

@@ -7,6 +7,7 @@
 
 namespace Drupal\locale;
 
+use Drupal\Core\Cache\CacheBackendInterface;
 use Drupal\Core\Language\Language;
 use Drupal\Core\Config\TypedConfigManager;
 use Drupal\Core\Config\StorageInterface;
@@ -47,10 +48,12 @@ class LocaleConfigManager extends TypedConfigManager {
    *   data.
    * @param \Drupal\locale\StringStorageInterface $localeStorage
    *   The locale storage to use for reading string translations.
+   * @param \Drupal\Core\Cache\CacheBackendInterface $cache
+   *   The cache backend to use for caching the definitions.
    */
-  public function __construct(StorageInterface $configStorage, StorageInterface $schemaStorage, StorageInterface $installStorage, StringStorageInterface $localeStorage) {
+  public function __construct(StorageInterface $configStorage, StorageInterface $schemaStorage, StorageInterface $installStorage, StringStorageInterface $localeStorage, CacheBackendInterface $cache) {
     // Note we use the install storage for the parent constructor.
-    parent::__construct($configStorage, $schemaStorage);
+    parent::__construct($configStorage, $schemaStorage, $cache);
     $this->installStorage = $installStorage;
     $this->localeStorage = $localeStorage;
   }

core/modules/locale/lib/Drupal/locale/Tests/LocaleConfigManagerTest.php

@@ -46,7 +46,8 @@ class LocaleConfigManagerTest extends DrupalUnitTestBase {
       $this->container->get('config.storage.installer'),
       $this->container->get('config.storage.schema'),
       $this->container->get('config.storage.installer'),
-      $this->container->get('locale.storage')
+      $this->container->get('locale.storage'),
+      $this->container->get('cache.config')
     );
 
     $language = new Language(array('id' => 'de'));

core/modules/locale/locale.services.yml

@@ -11,7 +11,7 @@ services:
     arguments: ['@entity.manager']
   locale.config.typed:
     class: Drupal\locale\LocaleConfigManager
-    arguments: ['@config.storage', '@config.storage.schema', '@config.storage.installer', '@locale.storage']
+    arguments: ['@config.storage', '@config.storage.schema', '@config.storage.installer', '@locale.storage', '@cache.config']
   locale.storage:
     class: Drupal\locale\StringDatabaseStorage
     arguments: ['@database']