Update to Drupal 8.1.0. For more information, see https://www.drupal.org/drupal-8.1.0-release-notes

core/lib/Drupal/Core/Controller/ControllerBase.php

@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Core\Controller\ControllerBase.
- */
-
 namespace Drupal\Core\Controller;
 
 use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
@@ -112,6 +107,13 @@ abstract class ControllerBase implements ContainerInjectionInterface {
    */
   protected $formBuilder;
 
+  /**
+   * The logger factory.
+   *
+   * @var \Psr\Log\LoggerInterface
+   */
+  protected $loggerFactory;
+
   /**
    * {@inheritdoc}
    */
@@ -282,6 +284,23 @@ abstract class ControllerBase implements ContainerInjectionInterface {
     return $this->languageManager;
   }
 
+  /**
+   * Returns a channel logger object.
+   *
+   * @param string $channel
+   *   The name of the channel. Can be any string, but the general practice is
+   *   to use the name of the subsystem calling this.
+   *
+   * @return \Psr\Log\LoggerInterface
+   *   The logger for this channel.
+   */
+  protected function getLogger($channel) {
+    if (!$this->loggerFactory) {
+      $this->loggerFactory = $this->container()->get('logger.factory');
+    }
+    return $this->loggerFactory->get($channel);
+  }
+
   /**
    * Returns the service container.
    *

core/lib/Drupal/Core/Controller/ControllerResolver.php

@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Core\Controller\ControllerResolver.
- */
-
 namespace Drupal\Core\Controller;
 
 use Drupal\Core\DependencyInjection\ClassResolverInterface;

core/lib/Drupal/Core/Controller/ControllerResolverInterface.php

@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Core\Controller\ControllerResolverInterface.
- */
-
 namespace Drupal\Core\Controller;
 
 use Symfony\Component\HttpKernel\Controller\ControllerResolverInterface as BaseControllerResolverInterface;

core/lib/Drupal/Core/Controller/FormController.php

@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Core\Controller\FormController.
- */
-
 namespace Drupal\Core\Controller;
 
 use Drupal\Core\DependencyInjection\DependencySerializationTrait;

core/lib/Drupal/Core/Controller/HtmlFormController.php

@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Core\Controller\HtmlFormController.
- */
-
 namespace Drupal\Core\Controller;
 
 use Drupal\Core\Form\FormBuilderInterface;

core/lib/Drupal/Core/Controller/TitleResolver.php

@@ -1,10 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Core\Controller\TitleResolver.
- */
-
 namespace Drupal\Core\Controller;
 
 use Drupal\Core\StringTranslation\StringTranslationTrait;

core/lib/Drupal/Core/Controller/TitleResolverInterface.php

@@ -1,9 +1,5 @@
 <?php
 
-/**
- * @file
- * Contains \Drupal\Core\Controller\TitleResolverInterface.
- */
 namespace Drupal\Core\Controller;
 
 use Symfony\Component\Routing\Route;