nextcloud/apps/files/command/scan.php

308 lines
8.2 KiB
PHP

<?php
/**
* @author Bart Visscher <bartv@thisnet.nl>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <icewind@owncloud.com>
* @author Vincent Petry <pvince81@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 OCA\Files\Command;
use OC\ForbiddenException;
use OCP\Files\StorageNotAvailableException;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Helper\Table;
class Scan extends Command {
/**
* @var \OC\User\Manager $userManager
*/
private $userManager;
/** @var float */
protected $execTime = 0;
/** @var int */
protected $foldersCounter = 0;
/** @var int */
protected $filesCounter = 0;
/** @var bool */
protected $interrupted = false;
public function __construct(\OC\User\Manager $userManager) {
$this->userManager = $userManager;
parent::__construct();
}
protected function configure() {
$this
->setName('files:scan')
->setDescription('rescan filesystem')
->addArgument(
'user_id',
InputArgument::OPTIONAL | InputArgument::IS_ARRAY,
'will rescan all files of the given user(s)'
)
->addOption(
'path',
'p',
InputArgument::OPTIONAL,
'limit rescan to this path, eg. --path="/alice/files/Music", the user_id is determined by the path and the user_id parameter and --all are ignored'
)
->addOption(
'quiet',
'q',
InputOption::VALUE_NONE,
'suppress any output'
)
->addOption(
'verbose',
'-v|vv|vvv',
InputOption::VALUE_NONE,
'verbose the output'
)
->addOption(
'all',
null,
InputOption::VALUE_NONE,
'will rescan all files of all known users'
);
}
protected function scanFiles($user, $path, $verbose, OutputInterface $output) {
$scanner = new \OC\Files\Utils\Scanner($user, \OC::$server->getDatabaseConnection(), \OC::$server->getLogger());
# printout and count
if ($verbose) {
$scanner->listen('\OC\Files\Utils\Scanner', 'scanFile', function ($path) use ($output) {
$output->writeln("Scanning file <info>$path</info>");
$this->filesCounter += 1;
});
$scanner->listen('\OC\Files\Utils\Scanner', 'scanFolder', function ($path) use ($output) {
$output->writeln("Scanning folder <info>$path</info>");
$this->foldersCounter += 1;
});
$scanner->listen('\OC\Files\Utils\Scanner', 'StorageNotAvailable', function (StorageNotAvailableException $e) use ($output) {
$output->writeln("Error while scanning, storage not available (" . $e->getMessage() . ")");
});
# count only
} else {
$scanner->listen('\OC\Files\Utils\Scanner', 'scanFile', function ($path) use ($output) {
$this->filesCounter += 1;
});
$scanner->listen('\OC\Files\Utils\Scanner', 'scanFolder', function ($path) use ($output) {
$this->foldersCounter += 1;
});
}
try {
$scanner->scan($path);
} catch (ForbiddenException $e) {
$output->writeln("<error>Home storage for user $user not writable</error>");
$output->writeln("Make sure you're running the scan command only as the user the web server runs as");
}
}
protected function execute(InputInterface $input, OutputInterface $output) {
$inputPath = $input->getOption('path');
if ($inputPath) {
$inputPath = '/' . trim($inputPath, '/');
list (, $user,) = explode('/', $inputPath, 3);
$users = array($user);
} else if ($input->getOption('all')) {
$users = $this->userManager->search('');
} else {
$users = $input->getArgument('user_id');
}
if (count($users) === 0) {
$output->writeln("<error>Please specify the user id to scan, \"--all\" to scan for all users or \"--path=...\"</error>");
return;
}
# no messaging level option means: no full printout but statistics
# $quiet means no print at all
# $verbose means full printout including statistics
# -q -v full stat
# 0 0 no yes
# 0 1 yes yes
# 1 -- no no (quiet overrules verbose)
$verbose = $input->getOption('verbose');
$quiet = $input->getOption('quiet');
# restrict the verbosity level to VERBOSITY_VERBOSE
if ($output->getVerbosity()>OutputInterface::VERBOSITY_VERBOSE) {
$output->setVerbosity(OutputInterface::VERBOSITY_VERBOSE);
}
if ($quiet) {
$verbose = false;
}
$this->initTools();
foreach ($users as $user) {
if (is_object($user)) {
$user = $user->getUID();
}
$path = $inputPath ? $inputPath : '/' . $user;
if ($this->userManager->userExists($user)) {
# full: printout data if $verbose was set
$this->scanFiles($user, $path, $verbose, $output);
} else {
$output->writeln("<error>Unknown user $user</error>");
}
}
# stat: printout statistics if $quiet was not set
if (!$quiet) {
$this->presentStats($output);
}
}
/**
* Checks if the command was interrupted by ctrl-c
*/
protected function checkForInterruption($output) {
if ($this->hasBeenInterrupted()) {
$this->presentResults($output);
exit;
}
}
/**
* Initialises some useful tools for the Command
*/
protected function initTools() {
// Start the timer
$this->execTime = -microtime(true);
// Convert PHP errors to exceptions
set_error_handler([$this, 'exceptionErrorHandler'], E_ALL);
// Collect interrupts and notify the running command
pcntl_signal(SIGTERM, [$this, 'cancelOperation']);
pcntl_signal(SIGINT, [$this, 'cancelOperation']);
}
/**
* Changes the status of the command to "interrupted"
*
* Gives a chance to the command to properly terminate what it's doing
*/
private function cancelOperation() {
$this->interrupted = true;
}
/**
* Processes PHP errors as exceptions in order to be able to keep track of problems
*
* @see https://secure.php.net/manual/en/function.set-error-handler.php
*
* @param int $severity the level of the error raised
* @param string $message
* @param string $file the filename that the error was raised in
* @param int $line the line number the error was raised
*
* @throws \ErrorException
*/
public function exceptionErrorHandler($severity, $message, $file, $line) {
if (!(error_reporting() & $severity)) {
// This error code is not included in error_reporting
return;
}
throw new \ErrorException($message, 0, $severity, $file, $line);
}
/**
* @return bool
*/
protected function hasBeenInterrupted() {
$cancelled = false;
pcntl_signal_dispatch();
if ($this->interrupted) {
$cancelled = true;
}
return $cancelled;
}
/**
* @param OutputInterface $output
*/
protected function presentStats(OutputInterface $output) {
// Stop the timer
$this->execTime += microtime(true);
$output->writeln("");
$headers = [
'Folders', 'Files', 'Elapsed time'
];
$this->showSummary($headers, null, $output);
}
/**
* Shows a summary of operations
*
* @param string[] $headers
* @param string[] $rows
* @param OutputInterface $output
*/
protected function showSummary($headers, $rows, OutputInterface $output) {
$niceDate = $this->formatExecTime();
if (!$rows) {
$rows = [
$this->foldersCounter,
$this->filesCounter,
$niceDate,
];
}
$table = new Table($output);
$table
->setHeaders($headers)
->setRows([$rows]);
$table->render();
}
/**
* Formats microtime into a human readable format
*
* @return string
*/
protected function formatExecTime() {
list($secs, $tens) = explode('.', sprintf("%.1f", ($this->execTime)));
$niceDate = date('H:i:s', $secs) . '.' . $tens;
return $niceDate;
}
}