Introduce occ command to manage owncloud log backend

log:owncloud can set/display the log filename and log file rotation size

core/command/log/owncloud.php

@@ -0,0 +1,124 @@
+<?php
+/**
+ * @author Robin McCorkell <rmccorkell@owncloud.com>
+ *
+ * @copyright Copyright (c) 2015, 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 OC\Core\Command\Log;
+
+use \OCP\IConfig;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class OwnCloud extends Command {
+
+	/** @var IConfig */
+	protected $config;
+
+	public function __construct(IConfig $config) {
+		$this->config = $config;
+		parent::__construct();
+	}
+
+	protected function configure() {
+		$this
+			->setName('log:owncloud')
+			->setDescription('manipulate ownCloud logging backend')
+			->addOption(
+				'enable',
+				null,
+				InputOption::VALUE_NONE,
+				'enable this logging backend'
+			)
+			->addOption(
+				'file',
+				null,
+				InputOption::VALUE_REQUIRED,
+				'set the log file path'
+			)
+			->addOption(
+				'rotate-size',
+				null,
+				InputOption::VALUE_REQUIRED,
+				'set the file size for log rotation, 0 = disabled'
+			)
+		;
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output) {
+		$toBeSet = [];
+
+		if ($input->getOption('enable')) {
+			$toBeSet['log_type'] = 'owncloud';
+		}
+
+		if ($file = $input->getOption('file')) {
+			$toBeSet['logfile'] = $file;
+		}
+
+		if (($rotateSize = $input->getOption('rotate-size')) !== null) {
+			$rotateSize = \OCP\Util::computerFileSize($rotateSize);
+			$this->validateRotateSize($rotateSize);
+			$toBeSet['log_rotate_size'] = $rotateSize;
+		}
+
+		// set config
+		foreach ($toBeSet as $option => $value) {
+			$this->config->setSystemValue($option, $value);
+		}
+
+		// display config
+		if ($this->config->getSystemValue('log_type', 'owncloud') === 'owncloud') {
+			$enabledText = 'enabled';
+		} else {
+			$enabledText = 'disabled';
+		}
+		$output->writeln('Log backend ownCloud: '.$enabledText);
+
+		$dataDir = $this->config->getSystemValue('datadirectory', \OC::$SERVERROOT.'/data');
+		$defaultLogFile = rtrim($dataDir, '/').'/owncloud.log';
+		$output->writeln('Log file: '.$this->config->getSystemValue('logfile', $defaultLogFile));
+
+		$rotateSize = $this->config->getSystemValue('log_rotate_size', 0);
+		if ($rotateSize) {
+			$rotateString = \OCP\Util::humanFileSize($rotateSize);
+		} else {
+			$rotateString = 'disabled';
+		}
+		$output->writeln('Rotate at: '.$rotateString);
+	}
+
+	/**
+	 * @param mixed $rotateSize
+	 * @throws \InvalidArgumentException
+	 */
+	protected function validateRotateSize(&$rotateSize) {
+		if ($rotateSize === false) {
+			throw new \InvalidArgumentException('Error parsing log rotation file size');
+		}
+		$rotateSize = (int) $rotateSize;
+		if ($rotateSize < 0) {
+			throw new \InvalidArgumentException('Log rotation file size must be non-negative');
+		}
+	}
+
+}

core/register_command.php

@@ -59,6 +59,7 @@ if (\OC::$server->getConfig()->getSystemValue('installed', false)) {
 	$application->add(new OC\Core\Command\Encryption\Status(\OC::$server->getEncryptionManager()));
 
 	$application->add(new OC\Core\Command\Log\Manage(\OC::$server->getConfig()));
+	$application->add(new OC\Core\Command\Log\OwnCloud(\OC::$server->getConfig()));
 
 	$application->add(new OC\Core\Command\Maintenance\MimeTypesJS());
 	$application->add(new OC\Core\Command\Maintenance\Mode(\OC::$server->getConfig()));