Implement classification migration as repair step

apps/dav/appinfo/info.xml

@@ -20,4 +20,9 @@
 	<background-jobs>
 		<job>OCA\DAV\CardDAV\Sync\SyncJob</job>
 	</background-jobs>
+	<repair-steps>
+		<post-migration>
+			<job>OCA\DAV\Migration\Classification</job>
+		</post-migration>
+	</repair-steps>
 </info>

apps/dav/appinfo/update.php

@@ -24,4 +24,3 @@ use OCA\DAV\AppInfo\Application;
 
 $app = new Application();
 $app->generateBirthdays();
-$app->migrateClassification();

apps/dav/lib/AppInfo/Application.php

@@ -108,6 +108,14 @@ class Application extends App {
 				$g
 			);
 		});
+
+		$container->registerService('OCA\DAV\Migration\Classification', function ($c) {
+			/** @var IAppContainer $c */
+			return new Classification(
+				$c->query('CalDavBackend'),
+				$c->getServer()->getUserManager()
+			);
+		});
 	}
 
 	/**
@@ -170,20 +178,4 @@ class Application extends App {
 			$this->getContainer()->getServer()->getLogger()->logException($ex);
 		}
 	}
-
-	public function migrateClassification() {
-		try {
-			/** @var CalDavBackend $calDavBackend */
-			$calDavBackend = $this->getContainer()->query('CalDavBackend');
-			$migration = new Classification($calDavBackend);
-			$userManager = $this->getContainer()->getServer()->getUserManager();
-
-			$userManager->callForAllUsers(function($user) use($migration) {
-				/** @var IUser $user */
-				$migration->runForUser($user);
-			});
-		} catch (\Exception $ex) {
-			$this->getContainer()->getServer()->getLogger()->logException($ex);
-		}
-	}
 }

apps/dav/lib/migration/classification.php → apps/dav/lib/Migration/Classification.php

 <?php
+/**
+ * @author Thomas Müller <thomas.mueller@tmit.eu>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
 
 namespace OCA\DAV\Migration;
 
 use OCA\DAV\CalDAV\CalDavBackend;
 use OCP\IUser;
+use OCP\IUserManager;
+use OCP\Migration\IOutput;
+use OCP\Migration\IRepairStep;
+
+class Classification implements IRepairStep {
+
+	/** @var CalDavBackend */
+	private $calDavBackend;
 
-class Classification {
+	/** @var IUserManager */
+	private $userManager;
 
 	/**
 	 * Classification constructor.
 	 *
 	 * @param CalDavBackend $calDavBackend
 	 */
-	public function __construct(CalDavBackend $calDavBackend) {
+	public function __construct(CalDavBackend $calDavBackend, IUserManager $userManager) {
 		$this->calDavBackend = $calDavBackend;
+		$this->userManager = $userManager;
 	}
 
 	/**
@@ -33,9 +63,31 @@ class Classification {
 	}
 
 	/**
-	 * @param $calObject
+	 * @param $calendarData
+	 * @return integer
+	 * @throws \Sabre\DAV\Exception\BadRequest
 	 */
 	protected function extractClassification($calendarData) {
 		return $this->calDavBackend->getDenormalizedData($calendarData)['classification'];
 	}
+
+	/**
+	 * @inheritdoc
+	 */
+	public function getName() {
+		return 'Fix classification for calendar objects';
+	}
+
+	/**
+	 * @inheritdoc
+	 */
+	public function run(IOutput $output) {
+		$output->startProgress();
+		$this->userManager->callForAllUsers(function($user) use ($output) {
+			/** @var IUser $user */
+			$output->advance(1, $user->getDisplayName());
+			$this->runForUser($user);
+		});
+		$output->finishProgress();
+	}
 }

lib/public/Migration/IRepairStep.php

@@ -39,8 +39,9 @@ interface IRepairStep {
 	 * Run repair step.
 	 * Must throw exception on error.
 	 *
-	 * @since 9.1.0
+	 * @param IOutput $output
 	 * @throws \Exception in case of failure
+	 * @since 9.1.0
 	 */
 	public function run(IOutput $output);