Add removal of mounts without storages to files:cleanup command

apps/files/lib/Command/DeleteOrphanedFiles.php

@@ -78,6 +78,39 @@ public function execute(InputInterface $input, OutputInterface $output): int {
 		}
 
 		$output->writeln("$deletedEntries orphaned file cache entries deleted");
+
+		$deletedMounts = $this->cleanupOrphanedMounts();
+		$output->writeln("$deletedMounts orphaned mount entries deleted");
 		return 0;
 	}
+
+	private function cleanupOrphanedMounts() {
+		$deletedEntries = 0;
+
+		$query = $this->connection->getQueryBuilder();
+		$query->select('m.storage_id')
+			->from('mounts', 'm')
+			->where($query->expr()->isNull('s.numeric_id'))
+			->leftJoin('m', 'storages', 's', $query->expr()->eq('m.storage_id', 's.numeric_id'))
+			->groupBy('storage_id')
+			->setMaxResults(self::CHUNK_SIZE);
+
+		$deleteQuery = $this->connection->getQueryBuilder();
+		$deleteQuery->delete('mounts')
+			->where($deleteQuery->expr()->eq('storage_id', $deleteQuery->createParameter('storageid')));
+
+		$deletedInLastChunk = self::CHUNK_SIZE;
+		while ($deletedInLastChunk === self::CHUNK_SIZE) {
+			$deletedInLastChunk = 0;
+			$result = $query->execute();
+			while ($row = $result->fetch()) {
+				$deletedInLastChunk++;
+				$deletedEntries += $deleteQuery->setParameter('storageid', (int) $row['storage_id'])
+					->execute();
+			}
+			$result->closeCursor();
+		}
+
+		return $deletedEntries;
+	}
 }

apps/files/tests/Command/DeleteOrphanedFilesTest.php

@@ -87,6 +87,11 @@ protected function getFile($fileId) {
 		return $stmt->fetchAll();
 	}
 
+	protected function getMounts($storageId) {
+		$stmt = $this->connection->executeQuery('SELECT * FROM `*PREFIX*mounts` WHERE `storage_id` = ?', [$storageId]);
+		return $stmt->fetchAll();
+	}
+
 	/**
 	 * Test clearing orphaned files
 	 */
@@ -98,34 +103,48 @@ public function testClearFiles() {
 			->disableOriginalConstructor()
 			->getMock();
 
+		// scan home storage so that mounts are properly setup
+		\OC::$server->getRootFolder()->getUserFolder($this->user1)->getStorage()->getScanner()->scan('');
+
 		$this->loginAsUser($this->user1);
 
+
 		$view = new View('/' . $this->user1 . '/');
 		$view->mkdir('files/test');
 
 		$fileInfo = $view->getFileInfo('files/test');
 
 		$storageId = $fileInfo->getStorage()->getId();
+		$numericStorageId = $fileInfo->getStorage()->getStorageCache()->getNumericId();
 
 		$this->assertCount(1, $this->getFile($fileInfo->getId()), 'Asserts that file is available');
+		$this->assertCount(1, $this->getMounts($numericStorageId), 'Asserts that mount is available');
 
 		$this->command->execute($input, $output);
 
 		$this->assertCount(1, $this->getFile($fileInfo->getId()), 'Asserts that file is still available');
+		$this->assertCount(1, $this->getMounts($numericStorageId), 'Asserts that mount is still available');
+
 
 		$deletedRows = $this->connection->executeUpdate('DELETE FROM `*PREFIX*storages` WHERE `id` = ?', [$storageId]);
 		$this->assertNotNull($deletedRows, 'Asserts that storage got deleted');
 		$this->assertSame(1, $deletedRows, 'Asserts that storage got deleted');
 
 		// parent folder, `files`, ´test` and `welcome.txt` => 4 elements
 		$output
-			->expects($this->once())
+			->expects($this->at(0))
 			->method('writeln')
 			->with('3 orphaned file cache entries deleted');
 
+		$output
+			->expects($this->at(1))
+			->method('writeln')
+			->with('1 orphaned mount entries deleted');
+
 		$this->command->execute($input, $output);
 
 		$this->assertCount(0, $this->getFile($fileInfo->getId()), 'Asserts that file gets cleaned up');
+		$this->assertCount(0, $this->getMounts($numericStorageId), 'Asserts that mount gets cleaned up');
 
 		// since we deleted the storage it might throw a (valid) StorageNotAvailableException
 		try {