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<?php
/**
* Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Files\Cache;
/**
* Update the cache and propagate changes
*/
class Updater {
/**
* @var bool
*/
protected $enabled = true;
/**
* @var \OC\Files\View
*/
protected $view;
/**
* @var \OC\Files\Cache\ChangePropagator
*/
protected $propagator;
/**
* @param \OC\Files\View $view
*/
public function __construct($view) {
$this->view = $view;
$this->propagator = new ChangePropagator($view);
}
public function disable() {
$this->enabled = false;
}
public function enable() {
$this->enabled = true;
}
public function propagate($path, $time = null) {
if (Scanner::isPartialFile($path)) {
return;
}
$this->propagator->addChange($path);
$this->propagator->propagateChanges($time);
}
/**
* Update the cache for $path
*
* @param string $path
* @param int $time
*/
public function update($path, $time = null) {
if (!$this->enabled or Scanner::isPartialFile($path)) {
return;
}
/**
* @var \OC\Files\Storage\Storage $storage
* @var string $internalPath
*/
list($storage, $internalPath) = $this->view->resolvePath($path);
if ($storage) {
$this->propagator->addChange($path);
$cache = $storage->getCache($internalPath);
$scanner = $storage->getScanner($internalPath);
$data = $scanner->scan($internalPath, Scanner::SCAN_SHALLOW);
$this->correctParentStorageMtime($storage, $internalPath);
$cache->correctFolderSize($internalPath, $data);
$this->propagator->propagateChanges($time);
}
}
/**
* Remove $path from the cache
*
* @param string $path
*/
public function remove($path) {
if (!$this->enabled or Scanner::isPartialFile($path)) {
return;
}
/**
* @var \OC\Files\Storage\Storage $storage
* @var string $internalPath
*/
list($storage, $internalPath) = $this->view->resolvePath($path);
if ($storage) {
$parent = dirname($internalPath);
if ($parent === '.') {
$parent = '';
}
$this->propagator->addChange($path);
$cache = $storage->getCache($internalPath);
$cache->remove($internalPath);
$cache->correctFolderSize($parent);
$this->correctParentStorageMtime($storage, $internalPath);
$this->propagator->propagateChanges();
}
}
/**
* @param string $source
* @param string $target
*/
public function rename($source, $target) {
if (!$this->enabled or Scanner::isPartialFile($source) or Scanner::isPartialFile($target)) {
return;
}
/**
* @var \OC\Files\Storage\Storage $sourceStorage
* @var \OC\Files\Storage\Storage $targetStorage
* @var string $sourceInternalPath
* @var string $targetInternalPath
*/
list($sourceStorage, $sourceInternalPath) = $this->view->resolvePath($source);
// if it's a moved mountpoint we dont need to do anything
if ($sourceInternalPath === '') {
return;
}
list($targetStorage, $targetInternalPath) = $this->view->resolvePath($target);
if ($sourceStorage && $targetStorage) {
if ($sourceStorage === $targetStorage) {
$cache = $sourceStorage->getCache($sourceInternalPath);
if ($cache->inCache($targetInternalPath)) {
$cache->remove($targetInternalPath);
}
$cache->move($sourceInternalPath, $targetInternalPath);
if (pathinfo($sourceInternalPath, PATHINFO_EXTENSION) !== pathinfo($targetInternalPath, PATHINFO_EXTENSION)) {
// handle mime type change
$mimeType = $sourceStorage->getMimeType($targetInternalPath);
$fileId = $cache->getId($targetInternalPath);
$cache->update($fileId, array('mimetype' => $mimeType));
}
$cache->correctFolderSize($sourceInternalPath);
$cache->correctFolderSize($targetInternalPath);
$this->correctParentStorageMtime($sourceStorage, $sourceInternalPath);
$this->correctParentStorageMtime($targetStorage, $targetInternalPath);
$this->propagator->addChange($source);
$this->propagator->addChange($target);
} else {
$this->remove($source);
$this->update($target);
}
$this->propagator->propagateChanges();
}
}
/**
* update the storage_mtime of the parent
*
* @param \OC\Files\Storage\Storage $storage
* @param string $internalPath
*/
private function correctParentStorageMtime($storage, $internalPath) {
$cache = $storage->getCache();
$parentId = $cache->getParentId($internalPath);
$parent = dirname($internalPath);
if ($parentId != -1) {
$cache->update($parentId, array('storage_mtime' => $storage->filemtime($parent)));
}
}
public function __destruct() {
// propagate any leftover changes
$this->propagator->propagateChanges();
}
}
|
